what laser pointer works on lcd screen factory

But, times have changed. We now know that pointing a traditional physical laser at a TV can damage the screen’s pixels, causing them to die and turn black.

Not only will digital lasers not harm your TV, but they are also safer than their physical counterparts since they won’t blind you if shone in your eye!

ASiNG Advanced Digital Laser Presentation Remote - Red Laser Presentation Pointers with Function of Spotlighting, Highlighting, Magnifying, Air Mouse...

Norwii N95 Presentation Remote Designed for LED LCD Screen, Digital/Physical Laser Pointer & Air Mouse Presenter Pointer 3 Type Presenters, Support...

ASiNG Advanced Digital Laser Presentation Remote - Red Laser Presentation Pointers with Function of Spotlighting, Highlighting, Magnifying, Air Mouse...

Norwii N95 Presentation Remote Designed for LED LCD Screen, Digital/Physical Laser Pointer & Air Mouse Presenter Pointer 3 Type Presenters, Support...

If you’re new to the world of digital lasers, what they are, and how they work, check out our article Can You Use a Laser Pointer on a TV Screen (LED/LCD)?

But, one question remains: which digital laser pointer should accompany you to your next company meeting? You head to Amazon but, to an untrained eye, they all look the same.

We’ve compiled a list of the three best digital laser pointers for 2022, complete with a Buyer’s Guide so you know what to look for in this new and improved presentation aid.

Simply download the Logitech presentation app where you can customize your remote’s timer to buzz when you have a few minutes left of your presentation, then again when your time has run out.

You can also change the pointer from a spotlight, which magnifies items on-screen, to a small outline of a circle, which comes in handy with busy charts.

ASiNG Advanced Digital Laser Presentation Remote - Red Laser Presentation Pointers with Function of Spotlighting, Highlighting, Magnifying, Air Mouse...

Highlight areas of the screen with its spotlight mode or point at items on-screen with its pointer mode, which looks like a traditional laser’s red dot.

Like the Logitech remote, it also has a cursor feature. So you can select clickable icons on-screen even if you’re meters away from your laptop or tablet.

I may not be much of a talker, but when nerves get the best of me, I begin to ramble. Luckily, this remote has a time management feature to keep you on track by displaying a digital countdown timer.

The forgetful presenters out there will appreciate this gadget’s anti-lost function which reminds you to unplug the remote’s USB dongle from your laptop once your presentation has finished.

Norwii N95 Presentation Remote Designed for LED LCD Screen, Digital/Physical Laser Pointer & Air Mouse Presenter Pointer 3 Type Presenters, Support...

Sleek and simple is the name of the game for this Norwii N95 Presentation Remote. Its design is similar to that of the Logitech remote but at a slightly lower price point.

You can change the pointer mode by double-clicking the pointer key, so you can switch from highlight mode, to pointer mode, to magnifier mode in the middle of your presentation.

The blackout screen feature is particularly impactful since few people enjoy seeing the “End of slide show, click to exit” screen at the end of a PowerPoint presentation.

It’s important to differentiate between digital lasers and wireless ones. Digital ones display a spotlight or dot on the TV screen, preventing any damage to the screen’s pixels.

So, while they do connect to your laptop via a USB dongle, allowing you to use the remote to change slides and control other features, they do not display a digital laser.

There’s so much to consider when purchasing a digital laser pointer and with all of the remotes listed above being excellent choices, it’s hard to choose a definite winner.

ASiNG Advanced Digital Laser Presentation Remote - Red Laser Presentation Pointers with Function of Spotlighting, Highlighting, Magnifying, Air Mouse...

At the most basic level, laser pointers are bright streams of light. While they may appear bright on a wall or printed presentation, their light will not be as clear on a television screen.

This is because TV screens are also emitting a considerable amount of light, outshining the laser pointer’s light. This will make your laser appear dim and difficult to see.

Additionally, many TVs are fitted with a polarizing film. This film has anti-glare technology, blocking any external light (e.g. sun rays, lamps, overhead lights) from creating a glare on your television screen.

Since your laser pointer is an external light source, your TV’s anti-glare film will block it, absorbing its light and preventing it from being clearly seen.

So, unlike traditional physical lasers which shine an external light on your TV, digital lasers allow you to highlight items on-screen by spotlighting a certain area of the screen.

They’re designed to work with LCD and LED TV monitors, displaying a spotlight or a small pointer (depending on the laser) without the need for an external light source.

You may also find that traditional laser pointers aren’t as effective on projector screens due to the excess light, especially if you’re using a type of light-rejecting screen.

So, while digital lasers may be a bit more expensive, they will save you in the long run since you won’t have to pay to repair or replace your TV screen in the near future.

Whether we like it or not, appearance matters, especially during important business presentations. So, why not make sure your remote matches your sleek and modern appearance?

The Logitech Spotlight Presentation Remote is chic and stylish, comes in gold or black, and has the capacity to elevate your presentation significantly.

This laser pointer also has a range of 30 meters (or 98.4 feet), making it a great choice for presentations held in spacious auditoriums. It’s also completely wireless, so you can move freely around your room.

Instead of allowing you to point to objects on-screen with a cursor, this remote highlights an area of your screen. Not only will this allow you to direct the audience’s attention to wider areas of your presentation, but you also won’t have to worry about the cursor blocking any important information on-screen.

The most notable thing about this remote is its time management feature, which vibrates the remote, alerting you when you’re running out of time. The vibration is discrete, so only you will notice it.

ASiNG Advanced Digital Laser Presentation Remote - Red Laser Presentation Pointers with Function of Spotlighting, Highlighting, Magnifying, Air Mouse...

Presentations are stressful and, if you’re anything like me, your bouts of anxiety are manifested through forgetfulness. Lucky for you, this high-tech remote’s USB dongle also has extra storage!

This means you can upload your presentation files onto the remote’s dongle and open them directly on the TV, so you only have to remember to bring the remote and dongle with you.

Like the Logitech remote mentioned above, this remote also has a time management feature. However, this one allows you to precisely track how much time is left by displaying a digital countdown on the remote.

This is great if you want to draw your audience’s gaze to particular items by circling them on-screen or open and play videos during your presentation.

The laser’s bright light can burn your TV’s LED pixels, causing them to die. Dead pixels, which appear black and do not illuminate, are almost impossible to fix.

So, to play it safe, only use digital lasers on your TV. The digital laser will be clearer and easier to see and, as an added bonus, will not damage your TV screen.

These new and improved laser pointers wirelessly connect to your TV or monitor, allowing you to point at or highlight items on-screen without shining a damaging light on your TV.

Not to mention, they come with time management, air mouse, and magnification features, which can help elevate your presentation and make it run smoothly.

Your coworkers won’t only be impressed by your high-tech presentation aid, but they’ll also be relieved you aren’t damaging company televisions by shining a bright laser at them.

Yesenia Achlim is a technical copywriter and editor with a focus on AV equipment. She aims to break down complicated topics and make technology accessible, no matter your technical expertise. When she’s not teaching you how to replace a projector lamp, you can find her reading and baking.

The reason we all run into this problem is because TV is designed to minimize light reflection from the room windows or lamp lights in the room. TV screen has a heavy anti-reflection coating (ARC) which works by absorbing the lights shine on it, but will pass throughLED generated TV image from the back plane. This includes absorption of the laser pointer light, red or green.

We tried putting on another layer of transparent film on screen to force some reflection of laser pointer light. It helped a bit, but only works with a particular angle. People sitting in front of the TV still could not see the laser pointer.

We found the only thing that works for TV screen is the gyro mouse. It is in the shape of a laser pointer (and actually includes a red laser light). It takes a little practice to move it in the air in order to move the mouse on TV screen, but it works. The mouse shape can be changed to a hand or even a red dot. There is no driver installation but one minor problem is that the USB transmitter can get lost easily. We had to find ways to secure it -- that"s a different topic.

Tip: The red laser pointer can only be used on the projector. The green laser pointer can be used on the projector and the LCD monitor, so pay attention to the selection.

The Logitech® professional presenter R800 has a wireless range of up to 100 feet with a unique green laser pointer. It also features a long battery life, easy-to-use controls and an LCD screen. Plug-and-play technology doesn"t require software installation, which makes it easy to set up.

Capture everyone"s attention in bright rooms with the 522542 nm green light, class 2 laser pointer. The intuitive button location and smooth control contours make it easy to hold and use, helping presenters focus more on giving engaging performances.

With a 2.4 GHz wireless range of up to 100 feet, presenters can move throughout the crowd with ease. Don"t worry about the remote dying with a battery life of up 1,050 hours when used as a presenter or 20 hours when using the laser pointer Logitech R800 function. The LCD screen displays the time, battery life and wireless reception distance with the option to set vibrating alerts to help presenters focus on their speech or talk.

No software installation is necessary, making this an easy-to-use, plug-and-play device. All you need is a USB port to plug in the presentation remote and a Windows® operating system, including Vista, 7, 8, 10 or later. The presenter also requires two AAA batteries, which are included.

System RequirementUSB PortDimensions & WeightWeight0.5Package ContentsPackage Contents• Logitech Professional Presenter • Wireless mini receiver • 2 AAA batteries • Carrying case • User documentationAdditional InformationDate First AvailableOctober 12, 2019

As TV screens get bigger and cheaper, they are used more often for presentations than traditional projector screens. And everyone knows that when you use a laser pointer or presenter on a big-screen TV, the light is completely absorbed. Until now! GloPointer is the first laser- friendly screen protector that works on any LED, LCD or OLED TV.

The GloPointer screen protector/laser presenter solution from Sun Innovations, Inc. creates a glowing blue dot that is clearly visible to your audience - even from the back of the room. You no longer have to turn your back on your audience or block their view when you want to point out something on your flat panel.

The GloPointer solution consists of two parts: a transparent, nano-phosphor infused screen protector pre-cut to fit standard screen sizes and a 405nm Blue-Ray laser presenter. The screen protector and the GloPointer presenter must be used together; other laser pens and presenters will not work because they use different wavelengths of light.

Affordable and functional, you really can’t go wrong with the Beboncool Wireless Presenter (view at Walmart) and its built-in laser pointer. But if you’re someone who presents on a regular basis, it may be worth investing in the Canon PR10-G (vie at Amazon) for its features. Its long-range and LCD screen that displays a timer will allow you to move freely and help you keep track of time.

You don’t want to be in the middle of a presentation and have your clicker die out. A long battery life, the ability to recharge, and being able to check battery levels will help you avoid losing power or carrying extra batteries in your pocket.

If you plan to walk across a stage or work in a large room, you’ll want a presentation clicker that can move around with you and still perform well from longer distances (preferably, at least 100 feet). Of course, if you know that you’re just presenting in a conference room or classroom, a shorter range will be sufficient.

Many presentation clickers work on both Windows and Apple devices, but some may not. You’ll also want to investigate if the clicker is plug and play or if you need to download software to get it up and running. Simpler setups are always going to make life easier, especially if you will be using a variety of laptops and devices.

Do you want a built-in laser pointer? What about a built-in reminder to keep tabs on your timing? Would you prefer a few buttons or extra functions? These are some of the bells and whistles you may want to consider if you’re shopping for higher-end presentation clickers.

This roundup was updated by Dawn Papandrea, a personal finance reporter who covers small business topics. She is a full-time freelancer with two decades of writing experience.

A laser pointer or laser pen is a small handheld device with a power source (usually a battery) and a laser diode emitting a very narrow coherent low-powered laser beam of visible light, intended to be used to highlight something of interest by illuminating it with a small bright spot of colored light.

The small width of the beam and low power of typical laser pointers make the beam itself invisible in a clean atmosphere, only showing a point of light when striking an opaque surface. Laser pointers can project a visible beam via scattering from dust particles or water droplets along the beam path. Higher-power and higher-frequency green or blue lasers may produce a beam visible even in clean air because of Rayleigh scattering from air molecules, especially when viewed in moderately-to-dimly lit conditions. The intensity of such scattering increases when these beams are viewed from angles near the beam axis. Such pointers, particularly in the green-light output range, are used as astronomical object pointers for teaching purposes.

Laser pointers make a potent signaling tool, even in daylight, and are able to produce a bright signal for potential search and rescue vehicles using an inexpensive, small and lightweight device of the type that could be routinely carried in an emergency kit.

There are significant safety concerns with the use of laser pointers. Most jurisdictions have restrictions on lasers above 5 mW. If aimed at a person"s eyes, laser pointers can cause temporary visual disturbances or even severe damage to vision. There are reports in the medical literature documenting permanent injury to the macula and the subsequent permanent loss of vision after laser light from a laser pointer was shone at a human"s eyes. In rare cases, a dot of light from a red laser pointer may be thought to be due to a laser gunsight.

The low-cost availability of infrared (IR) diode laser modules of up to 1000 mW (1 watt) output has created a generation of IR-pumped, frequency doubled, green, blue, and violet diode-pumped solid-state laser pointers with visible power up to 300 mW. Because the invisible IR component in the beams of these visible lasers is difficult to filter out, and also because filtering it contributes extra heat which is difficult to dissipate in a small pocket "laser pointer" package, it is often left as a beam component in cheaper high-power pointers. This invisible IR component causes a degree of extra potential hazard in these devices when pointed at nearby objects and people.

Early laser pointers were helium–neon (HeNe) gas lasers and generated laser radiation at 633 nanometers (nm), usually designed to produce a laser beam with an output power under 1 milliwatt (mW). The least expensive laser pointers use a deep-red laser diode near the 650 nm wavelength. Slightly more expensive ones use a red-orange 635 nm diode, more easily visible because of the greater sensitivity of the human eye at 635 nm. Other colors are possible too, with the 532 nm green laser being the most common alternative. Yellow-orange laser pointers, at 593.5 nm, later became available. In September 2005 handheld blue laser pointers at 473 nm became available. In early 2010 "Blu-ray" (actually violet) laser pointers at 405 nm went on sale.

The apparent brightness of a spot from a laser beam depends on the optical power of the laser, the reflectivity of the surface, and the chromatic response of the human eye. For the same optical power, green laser light will seem brighter than other colors, because the human eye is most sensitive at low light levels in the green region of the spectrum (wavelength 520–570 nm). Sensitivity decreases for longer (redder) and shorter (bluer) wavelengths.

The output power of a laser pointer is usually stated in milliwatts (mW). In the U.S., lasers are classified by the American National Standards InstituteFood and Drug Administration (FDA)—see Laser safety#Classification for details. Visible laser pointers (400–700 nm) operating at less than 1 mW power are Class 2 or II, and visible laser pointers operating with 1–5 mW power are Class 3A or IIIa. Class 3B or IIIb lasers generate between 5 and 500 mW; Class 4 or IV lasers generate more than 500 mW. The US FDA Code of Federal Regulations stipulates that "demonstration laser products" such as pointers must comply with applicable requirements for Class I, II, IIIA, IIIB, or IV devices.

Green laser pointersdiode-pumped solid-state frequency-doubled, DPSSFD). They are more complex than standard red laser pointers, because laser diodes are not commonly available in this wavelength range. The green light is generated through a multi-step process, usually beginning with a high-power (typically 100–300 mW) infrared aluminium gallium arsenide (AlGaAs) laser diode operating at 808 nm. The 808 nm light pumps a neodymium doped crystal, usually neodymium-doped yttrium orthovanadate (Nd:YVO4) or neodymium-doped yttrium aluminium garnet (Nd:YAG), or, less commonly, neodymium-doped yttrium lithium fluoride (Nd:YLF)), which lases deeper in the infrared at 1064 nm. This lasing action is due to an electronic transition in the fluorescent neodymium ion, Nd(III), which is present in all of these crystals.

Because even a low-powered green laser is visible at night through Rayleigh scattering from air molecules, this type of pointer is used by astronomers to easily point out stars and constellations. Green laser pointers can come in a variety of different output powers. The 5 mW green laser pointers (classes II and IIIa) are the safest to use, and anything more powerful is usually not necessary for pointing purposes, since the beam is still visible in dark lighting conditions.

Blue laser pointers in specific wavelengths such as 473 nm usually have the same basic construction as DPSS green lasers. In 2006 many factories began production of blue laser modules for mass-storage devices, and these were used in laser pointers too. These were DPSS-type frequency-doubled devices. They most commonly emit a beam at 473 nm, which is produced by frequency doubling of 946 nm laser radiation from a diode-pumped Nd:YAG or Nd:YVO4 crystal (Nd-doped crystals usually produce a principal wavelength of 1064 nm, but with the proper reflective coating mirrors can be also made to lase at other "higher harmonic" non-principal neodymium wavelengths). For high output power, BBO crystals are used as frequency doublers; for lower powers, KTP is used. The Japanese company Nichia controlled 80% of the blue-laser-diode market in 2006.

Some vendors are now selling collimated diode blue laser pointers with measured powers exceeding 1,500 mW. However, since the claimed power of "laser pointer" products also includes the IR power (in DPSS technology only) still present in the beam (for reasons discussed below), comparisons on the basis of strictly visual-blue components from DPSS-type lasers remain problematic, and the information is often not available. Because of the higher neodymium harmonic used, and the lower efficiency of frequency-doubling conversion, the fraction of IR power converted to 473 nm blue laser light in optimally configured DPSS modules is typically 10–13%, about half that typical for green lasers (20–30%).

Lasers emitting a violet light beam at 405 nm may be constructed with GaN (gallium nitride) semiconductors. This is close to ultraviolet, bordering on the very extreme of human vision, and can cause bright blue fluorescence, and thus a blue rather than violet spot, on many white surfaces, including white clothing, white paper, and projection screens, due to the widespread use of optical brighteners in the manufacture of products intended to appear brilliantly white — the brighteners are chemical compounds that absorb light in the violet (and ultraviolet) region of the electromagnetic spectrum and re-emit light in the blue region by fluorescence. On ordinary non-fluorescent materials, and also on fog or dust, the color appears as a shade of deep violet that cannot be reproduced on monitors and print. A GaN laser emits 405 nm directly without a frequency doubler, eliminating the possibility of accidental dangerous infrared emission. These laser diodes are mass-produced for the reading and writing of data in Blu-ray drives (although the light emitted by the diodes is not blue, but distinctly violet). In mid-to-late 2011, 405 nm blue-violet laser diode modules with an optical power of 250 mW, based on GaN violet laser diodes made for Blu-ray disc readers, had reached the market from Chinese sources for prices of about US$60 including delivery.

Laser pointers are often used in educational and business presentations and visual demonstrations as an eye-catching pointing device. Laser pointers enhance verbal guidance given to students during surgery. The suggested mechanism of explanation is that the technology enables more precise guidance of location and identification of anatomic structures.

Red laser pointers can be used in almost any indoor or low-light situation where pointing out details by hand may be inconvenient, such as in construction work or interior decorating. Green laser pointers can be used for similar purposes as well as outdoors in daylight or for longer distances.

Laser pointers are used in a wide range of applications. Green laser pointers can also be used for amateur astronomy.Rayleigh scattering and airborne dust,star parties or for conducting lectures in astronomy. Astronomy laser pointers are also commonly mounted on telescopes in order to align the telescope to a specific star or location. Laser alignment is much easier than aligning through using the eyepiece.

Laser pointers are used in industry. For instance, construction companies may use high quality laser pointers to enhance the accuracy of showing specific distances, while working on large-scale projects. They have proven to be useful in this type of business because of their accuracy, which made them significant time-savers. What is essentially a laser pointer may be built into an infrared thermometer to identify where it is pointing, or be part of a laser level or other apparatus.

Laser pointers are used in robotics, for example, for laser guidance to direct the robot to a goal position by means of a laser beam, i.e. showing goal positions to the robot optically instead of communicating them numerically. This intuitive interface simplifies directing the robot while visual feedback improves the positioning accuracy and allows for implicit localization.

Entertainment is one of the other applications that has been found for lasers. The most common use of lasers in entertainment can be seen in special effects used in laser shows. Clubs, parties and outdoor concerts all use high-power lasers, with safety precautions, as a spectacle. Laser shows are often extravagant, using lenses, mirrors and smoke.

Lasers have also become a popular plaything for pets such as cats, ferrets and dogs, whose natural predatory instincts are triggered by the moving laser and will chase it and/or try to catch it as much as possible, but obviously never succeed.

However, laser pointers have few applications beyond actual pointing in the wider entertainment industry, and many venues ban entry to those in possession of pointers as a potential hazard. Very occasionally laser gloves, which are sometimes mistaken for pointers, are seen being worn by professional dancers on stage at shows. Unlike pointers, these usually produce low-power highly divergent beams to ensure eye safety. Laser pointers have been used as props by magicians during magic shows.

As an example of the potential dangers of laser pointers brought in by audience members, at the Tomorrow Land Festival in Belgium in 2009, laser pointers brought in by members of the audience of 200 mW or greater were found to be the cause of eye damage suffered by several other members of the audience according to reports about the incident filed on the ILDA (International Laser Display Association"s) Web site.

Laser pointers can be used in hiking or outdoor activities. Higher-powered laser pointers are bright enough to scare away large wild animals which makes them useful for hiking and camping.

Some militaries use lasers to mark targets at night for aircraft. This is done to ensure that "friendly" and "enemy" targets are not mistaken. A friendly target may wear an IR emitting device that is only visible to those utilizing night vision (such as pilots). To pinpoint the exact location of an enemy combatant, they would simply illuminate the target with a laser beam detectable by the attacking aircraft. This can be one of the most accurate ways of marking targets.

Laser pointers, with their very long range, are often maliciously shone at people to distract or annoy them, or for fun. This is considered particularly hazardous in the case of aircraft pilots, who may be dazzled or distracted at critical times.

Irresponsible use of laser pointers is often frowned upon by members of the laser projector community who fear that their misuse may result in legislation affecting lasers designed to be placed within projectors and used within the entertainment industry. Others involved in activities where dazzling or distraction are dangerous are also a concern.

Another distressing and potentially dangerous misuse of laser pointers is to use them when the dot may reasonably be mistaken for that of a laser gun sight. Armed police have drawn their weapons in such circumstances.

The output of laser pointers available to the general public is limited (and varies by country) in order to prevent accidental damage to the retina of human eyes. The U.K. Health Protection Agency recommended that "laser pointers generally available to the public should be restricted to less than 1 milliwatt as no injuries [like the one reported below to have caused retinal damage] have been reported at this power".

Studies have found that even low-power laser beams of not more than 5 mW can cause permanent retinal damage if gazed at for several seconds; however, the eye"s blink reflex must be intentionally overcome to make this occur. Such laser pointers have reportedly caused afterimages, flash blindness and glare,safe when used as intended.

A high-powered green laser pointer bought over the Internet was reported in 2010 to have caused a decrease of visual acuity from 6/6 to 6/12 (20/20 to 20/40); after two months acuity recovered to 6/6, but some retinal damage remained.anecdotal reports it received of eye injury from laser pointers.

Laser pointers available for purchase online can be capable of significantly higher power output than the pointers typically available in stores. Dubbed "Burning Lasers", these are designed to burn through light plastics and paper, and can have very similar external appearances to their low-power counterparts.

Studies in the early twenty-first century found that the risk to the human eye from accidental exposure to light from commercially available class IIIa laser pointers having powers up to 5 mW seemed rather small; however, prolonged viewing, such as deliberate staring into the beam for 10 or more seconds, can cause damage.

The UK Health Protection Agency warns against the higher-power typically green laser pointers available over the Internet, with power output of up to a few hundred milliwatts, as "extremely dangerous and not suitable for sale to the public."

Lasers classified as pointers are intended to have outputs less than 5 mW total power (Class 3R). At such power levels, an IR filter for a DPSS laser may not be required as the infrared (IR) output is relatively low and the brightness of the visible wavelength of the laser will cause the eye to react (blink reflex). However, higher-powered (> 5 mW) DPSS-type laser pointers have recently become available, usually through sources that do not follow laser safety regulations for laser packaging and labeling. These higher-powered lasers are often packaged in the same pointer-style housings as regular laser pointers, and usually lack the IR filters found in professional high-powered DPSS lasers, because of costs and additional efforts needed to accommodate them.

Though the IR from a DPSS laser is less collimated, the typical neodymium-doped crystals in such lasers do produce a true IR laser beam. The eye will usually react to the higher-powered visible light; however, in higher power DPSS lasers the IR laser output can be significant. What poses a special hazard for this unfiltered IR output is its presence in conjunction with laser safety goggles designed to only block the visible wavelengths of the laser. Red goggles, for example, will block most green light from entering the eyes, but will pass IR light. The reduced light behind the goggles may also cause the pupils to dilate, increasing the hazard to the invisible IR light. Dual-frequency so-called YAG laser eyewear is significantly more expensive than single frequency laser eyewear, and is often not supplied with unfiltered DPSS pointer style lasers, which output 1064 nm IR laser light as well. These potentially hazardous lasers produce little or no visible beam when shone through the eyewear supplied with them, yet their IR-laser output can still be easily seen when viewed with an IR-sensitive video camera.

In addition to the safety hazards of unfiltered IR from DPSS lasers, the IR component may be inclusive of total output figures in some laser pointers.

Though green (532 nm) lasers are most common, IR filtering problems may also exist in other DPSS lasers, such as DPSS red (671 nm), yellow (589 nm) and blue (473 nm) lasers. These DPSS laser wavelengths are usually more exotic, more expensive, and generally manufactured with higher quality components, including filters, unless they are put into laser pointer style pocket-pen packages. Most red (635 nm, 660 nm), violet (405 nm) and darker blue (445 nm) lasers are generally built using dedicated laser diodes at the output frequency, not as DPSS lasers. These diode-based visible lasers do not produce IR light.

In 1998, an audience member shone a laser at Kiss drummer Peter Criss"s eyes while the band was performing "Beth". After performing the song, Criss nearly stormed off the stage, and lead singer Paul Stanley ripped into whomever had been manipulating the laser light:

In every crowd, there"s one or two people who don"t belong [...] Now I know you want to [take] it to school tomorrow when you go to sixth grade, but [you should have left] it at home [before coming] to the show.

According to FIFA stadium safety and security regulations, laser pointers are prohibited items at stadiums during FIFA football tournaments and matches.UEFA.Olympique Lyonnais was fined by UEFA because of a laser pointer beam aimed by a Lyon fan at Cristiano Ronaldo.World Cup final qualifier match held in Riyadh, Saudi Arabia between the home team and the South Korean team, South Korean goalkeeper Lee Woon-Jae was hit in the eye with a green laser beam.2014 World Cup during the final group stage match between Algeria and Russia a green laser beam was directed on the face of Russian goalkeeper Igor Akinfeev. After the match the Algerian Football Federation was fined CHF50,000 (approx. £33,000/€41,100/US$56,200) by FIFA for the use of lasers and other violations of the rules by Algerian fans at the stadium.

In 2009 police in the United Kingdom began tracking the sources of lasers being shone at helicopters at night, logging the source using GPS, using thermal imaging cameras to see the suspect, and even the warm pointer if discarded, and calling in police dog teams. As of 2010 the penalty could be five years" imprisonment.

Despite legislation limiting the output of laser pointers in some countries, higher-power devices are currently produced in other regions and are frequently imported by customers who purchase them directly via Internet mail order. The legality of such transactions is not always clear; typically, the lasers are sold as research or OEM devices (which are not subject to the same power restrictions), with a disclaimer that they are not to be used as pointers. DIY videos are also often posted on Internet video sharing sites like YouTube which explain how to make a high-power laser pointer using the diode from an optical disc burner. As the popularity of these devices increased, manufacturers began manufacturing similar high-powered pointers. Warnings have been published on the dangers of such high-powered lasers.safety features sometimes found on laser modules sold for research purposes.

There have been many incidents regarding, in particular, aircraft, and the authorities in many countries take them extremely seriously. Many people have been convicted and sentenced, sometimes to several years" imprisonment.

In April 2008, citing a series of coordinated attacks on passenger jets in Sydney, the Australian government announced that it would restrict the sale and importation of certain laser items. The government had yet to determine which classes of laser pointers to ban.Victoria and the Australian Capital Territory a laser pointer with an accessible emission limit greater than 1 mW is classified as a prohibited weapon and any sale of such items must be recorded.Wayne Parnell had a laser pointer directed at his eyes when attempting to take a catch, which he dropped. He denied that it was a reason for dropping the ball, but despite this the MCG decided to keep an eye out for the laser pointers. The laser pointer ban only applies to hand-held battery-powered laser devices and not laser modules.

In November 2015 a 14-year-old Tasmanian boy damaged both his eyes after shining a laser pen "... in his eyes for a very brief period of time". He burned his retinas near the macula, the area where most of a persons central vision is located. As a result, the boy has almost immediately lost 75% of his vision, with little hope of recovery.

New regulations controlling the importation and sale of laser pointers (portable, battery-powered) have been established in Canada in 2011 and are governed by Health Canada using the Consumer Protection Act for the prohibition of the sale of Class 3B (IEC) or higher power lasers to "consumers" as defined in the Consumer Protection Act . Canadian federal regulation follows FDA (US Food & Drug Administration) CDRH, and IEC (International Electrotechnical Commission) hazard classification methods where manufacturers comply with the Radiation Emitting Devices Act. As of July 2011 three peoplemischief and assault.

The "RESOLUCIÓN 57151 DE 2016" prohibits the marketing and making available to consumers of laser pointers with output power equal to or greater than one milliwatt (>=1 mW).

Laser pointers are not illegal in Hong Kong but air navigation rules state that it is an offense to exhibit "any light" bright enough to endanger aircraft taking off or landing.

During the 2019–20 Hong Kong protests, laser pointers are being used by protesters to confuse police officers and scramble facial recognition cameras. On August 6, 5 off-duty police officers arrested Baptist University student union president Keith Fong Chung-yin after he purchased 10 laser pointers in Sham Shui Po for possession of "offensive weapons". Fong said he would use the pointers for stargazing, but police described them as “laser guns” whose beams could cause eye injuries. In defence of the arrest, police said that under Hong Kong law the pointers can be deemed “weapons” if they are used in or intended for use in an attack. The incident led to a public outcry. Human rights activist Icarus Wong Ho-yin said that going by the police explanation, “a kitchen worker who buys a few knives can be arrested for being in possession of offensive weapons”. Democratic Party lawmaker and lawyer James To Kun-sun criticized the police for abuse of power. Hundreds of protesters gathered outside the dome of Hong Kong"s Space Museum to put on a “laser show” to denounce police"s claims that these laser pointers were offensive weapons. Fong was released unconditionally two days later.

Before 1998 Class 3A lasers were allowed. In 1998 it became illegal to trade Class 2 laser pointers that are "gadgets" (e.g. ball pens, key chains, business gifts, devices that will end up in children"s possession, parts of toys, etc.). It is still allowed to trade Class 2 (< 1 mW) laser pointers proper, but they have to meet requirements regarding warnings and instructions for safe use in the manual. Trading of Class 3 and higher laser pointers is not allowed.

UK and most of Europe are now harmonized on Class 2 (<1 mW) for General presentation use laser pointers or laser pens. Anything above 1 mW is illegal for sale in the UK (import is unrestricted). Health and Safety regulation insists on use of Class 2 anywhere the public can come in contact with indoor laser light, and the DTI have urged Trading Standards authorities to use their existing powers under the General Product Safety Regulations 2005 to remove lasers above class 2 from the general market.

Since 2010, it is an offence in the UK to shine a light at an aircraft in flight so as to dazzle the pilot, whether intentionally or not, with a maximum penalty of a level 4 fine (currently £2500). It is also an offence to negligently or recklessly endanger an aircraft, with a maximum penalty of five years imprisonment and/or an unlimited fine.

To assist with enforcement, police helicopters use GPS and thermal imaging camera, together with dog teams on the ground, to help locate the offender; the discarded warm laser pointer is often visible on the thermal camera, and its wavelength can be matched to that recorded by an event recorder in the helicopter.

Laser pointers are Class II or Class IIIa devices, with output beam power less than 5 milliwatts (<5 mW). According to U.S. Food and Drug Administration (FDA) regulations, more powerful lasers may not be sold or promoted as laser pointers.

In Arizona it is a Class 1 misdemeanor if a person "aims a laser pointer at a police officer if the person intentionally or knowingly directs the beam of light from an operating laser pointer at another person and the person knows or reasonably should know that the other person is a police officer." (Arizona Revised Statutes §13-1213)

Public act 257 of 2003 makes it a felony for a person to "manufacture, deliver, possess, transport, place, use, or release" a "harmful electronic or electromagnetic device" for "an unlawful purpose"; also made into a felony is the act of causing "an individual to falsely believe that the individual has been exposed to a... harmful electronic or electromagnetic device."

Public act 328 of 1931 makes it a felony for a person to "sell, offer for sale, or possess" a "portable device or weapon from which an electric current, impulse, wave, or beam may be directed" and is designed "to incapacitate temporarily, injure, or kill".

Public law 264, H.P. 868 - L.D. 1271 criminalizes the knowing, intentional, and/or reckless use of an electronic weapon on another person, defining an electronic weapon as a portable device or weapon emitting an electric current, impulse, beam, or wave with disabling effects on a human being.

Chapter 170 of the Acts of 2004, Section 140 of the General Laws, section 131J states: "No person shall possess a portable device or weapon from which an electric current, impulse, wave or beam may be directed, which current, impulse, wave or beam is designed to incapacitate temporarily, injure or kill, except ... Whoever violates this section shall be punished by a fine of not less than $500 nor more than $1,000 or by imprisonment in the house of correction for not less than 6 months nor more than 2 1/2 years, or by both such fine and imprisonment."

In Utah it is a class C misdemeanor to point a laser pointer at a law enforcement officer and is an infraction to point a laser pointer at a moving vehicle.

In September 2011, GaN diode laser modules capable of operating at 250mW (or 300mW pulse) with a heatsink were offered on eBay in the Industrial Lasers category at around US$60.

Badman, Märit; Höglund, Katja; Höglund, Odd V. (2016). "Student Perceptions of the Use of a Laser Pointer for Intra-Operative Guidance in Feline Castration". 43 (2): 1–3. doi:10.3138/jvme.0515-084r2. PMID 27128854.

Bará, S; Robles, M; Tejelo, I; Marzoa, RI; González, H (2010). "Green laser pointers for visual astronomy: how much power is enough?". 87 (2): 140–4. doi:10.1097/OPX.0b013e3181cc8d8f. PMID 20035242. S2CID 5614966.

Nakagawara, Van B., DO. "Laser Hazards in Navigable Airspace" (PDF). FAA. Archived from the original (PDF) on 16 December 2011. Retrieved 15 December 2011.

Wyrsch, Stefan; Baenninger, Philipp B.; Schmid, Martin K. (2010). "Retinal Injuries from a Handheld Laser Pointer". N Engl J Med. 363 (11): 1089–1091. doi:10.1056/NEJMc1005818. PMID 20825327.

Sliney DH, Dennis JE (1994). "Safety concerns about laser pointers". J. Laser Appl. 6 (3): 159–164. Bibcode:1994JLasA...6..159S. doi:10.2351/1.4745352.

Air Navigation Order 2009. For the strict liability offence, see paragraphs 222 and 241(6) and part B of schedule 13 of the Order. For reckless endangerment, see paragraphs 137 and 241(8) and part D of schedule 13 of the Order.

Utah State Legislature 76-10-2501 Unlawful use of a laser pointer Archived 10 July 2008 at the Wayback Machine Most states now have similar laws to Utah"s making some uses of laser pointers (such as pointing one at a police officer or an aircraft (federal law) a crime)

This rechargeable presentation remote is exactly what you are searching for. It works well with PowerPoint and Prezi, works for Apple and Windows system. Applicable to the occasions as follows: business conference, PPT presentation in class, government organization, bid, training center, exhibition, etc. The red beam shows up clear no matter what kind of backgrounds the presentation uses in the range up to 100m, so you are free to move around the room and make eye contact with your audience rather than be stuck behind a desk with your keyboard. The wireless presenter is small and exquisite, portable to take in your handbag. Its shape feels great in your hand, making your presentation seem more natural and attractive, making listeners feel release and interested. It is also a unique gift for your friends & families.

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(Note: This import alert represents the Agency"s current guidance to FDA field personnel regarding the manufacturer(s) and/or products(s) at issue. It does not create or confer any rights for or on any person, and does not operate to bind FDA or the public).

"Detention Without Physical Examination Of Laser Pointers, Laser Gunsights, Laser Levels, Laser Light Shows, Laser Pointer Key Chains, & Similar Products That Fail To Comply With Applicable Performance Standards And Reporting Requirements."

Note: The revision of this Import Alert (IA) dated 09/20/2022 updates the reason for alert, guidance section, agency contacts, and charge code language. Changes to the import alert are bracketed by asterisks (***).

***This Import Alert was originally issued in December 1997 after investigation by FDA"s San Francisco District, reorganized under the Division of West Coast Imports, revealed numerous laser products from numerous foreign suppliers were subject to refusal as indicated by sections 536 of the FFDCA, for violations of section 534, 21 CFR 1002.10, 1010.2, 1010.3, 1040.10(g) and/or 1040.10(h).

*** Divisions may detain without physical examination (DWPE) shipments of the specified laser products such as laser pointers, laser gunsights, laser levels, laser pointer key chains, laser light show projectors from the firms identified on the Red List of this alert. ***

In addition, covered laser products are subject to detention if, among other reasons, an examination shows they do not appear to comply with the appropriate standard as follows:

Refer to the guidance documents Laser Notices 43 and 53 (available at: https://www.fda.gov/radiation-emitting-products/electronic-product-radiation-control-program/electronic-product-radiation-control-program-industry-guidance) for information about FDA"s compliance policies in these situations.

*** A recommendation for addition to detention without physical examination, including analytical worksheets (if the product was analyzed), labeling, package inserts, user manuals, photographic evidence, website information, entry documents, etc., should be forwarded to the Division of Import Operations (DIO). DIO will coordinate a review of all recommendations for addition to detention without physical examination with CDRH"s Electronic Products Team. ***

The owner, consignee, importer, and/or another responsible party to the shipment, may secure release of an individual shipment subject to DWPE, by submitting a written application (Form FDA 766) to FDA requesting authorization to bring a laser product that has been detained without physical examination per this import alert into compliance by relabeling or other action (reconditioning)or providing requested information. Divisions will refer such applications related to this alert to the Electronics Products Team, Division of Health Technology 8B, Office of Radiological Health, CDRH.

In order to remove a firm from detention without physical examination, information should be provided to FDA to adequately demonstrate that the manufacturer has resolved the conditions that gave rise to the appearance of the violation, so that the agency will have confidence that future entries will be in compliance. For example, when appropriate, the request should include information for FDA to adequately assess whether the manufacturer"s quality control and testing program is in compliance with the Electronic Product Radiation Control Act (Federal Food, Drug and Cosmetic Act, Chapter V, Subchapter C) and 21 CFR 1010.2 and their laser products comply with the Federal Performance Standard for Laser Products (21 CFR 1040.10 and 1040.11). In addition, under 21 CFR 1002.10(k), the importer must provide other information CDRH may reasonably require to determine whether the importer is in compliance with the Electronic Product Radiation Control Act and applicable standards.

If a firm and/or a representative thereof would like to petition for removal from DWPE under this Import Alert, all relevant information supporting the request should be forwarded to the following address:

*** Questions or issues involving import operations should be addressed to the Division of Import Operations (301) 796-0356 or FDAImportsInquiry@fda.hhs.gov.

Questions or issues involving science policy, analysis, preparation, or analytical methodology, should be addressed to ORA/Office of Regulatory Science at oraorsprivatelabimportalerts@fda.hhs.gov

Questions or issues of policy, sample collection recommendations, or any other additional questions, should be addressed to CDRH/OHT8: Office of Radiological Health at RadHealth@fda.hhs.gov.

Laser Pointers, Laser Gunsights, Laser Pens, Laser Light Show Projectors, Laser Special Effects, Laser Levels, Toy Guns with Lasers, Laser Pointer Key Chains, and similar products.

*** The article is subject to refusal of admission pursuant to section 536(a) of the Federal Food, Drug, and Cosmetic Act (FFDCA) in that it appears to be an electronic product offered for importation into the United States which fails to comply with an applicable standard prescribed pursuant to section 534 of the FFDCA. [Non standard, Section 536(a)(b)]

The article is subject to refusal of admission pursuant to section 536(a) of the Federal Food, Drug, and Cosmetic Act (FFDCA) in that it appears to be an electronic product to which is not affixed a certification in the form of a label or tag in conformity with section 534(h). [Not certified, Section 536(a)(b)]

The article is subject to refusal of admission pursuant to section 536(a) of the Federal Food, Drug, and Cosmetic Act (FFDCA) in that it appears to be an electronic product that does not comply with an applicable standard as prescribed by Section 534 because no reporting has been provided as required by Section 537(b). [Failure to file initial report, Section 536(a)]

Notes: Problem(s); Fails to meet laser performance standard (21 CFR 1040.10 and 1040.11 (b)) in that the power output exceeds the class IIIa limit. The labeling also did not appear to be in compliance as it lacked the correct language indicated in 21 CFR 1040.10 (g).

Notes: Problem(s); Fails to meet laser performance standard (21 CFR 1040.10 and 1040.11 (b)) in that the power output exceeds the class IIIa limit. The labeling also did not appear to be in compliance as it lacked the correct language indicated in 21 CFR 1040.10 (g).

It seems as if modern displays have all kinds of different labels: high definition, 3D, smart, 4K, 4K Ultra, the list goes on. The two most common labels are LCD and LED. What’s the difference between the two? Is there a difference? And does this difference make one or the other preferable for certain types of activities like gaming or graphic design?

All LED monitors are LCD monitors. But not all LCD monitors are LEDs. Kind of like all eagles are birds, but not all birds are eagles. While the names might be confusing to those wading through specs to find the best monitor, once you break it down it’s easier to understand than you think.

We’ll explain the tech and the naming conventions, and then highlight some HP monitors that might be the perfect fit for your needs. Let’s figure out exactly what LCD and LED monitors are and how to pick the right one for you.

Both types of displays use liquid crystals to help create an image. The difference is in the backlights. While a standard LCD monitor uses fluorescent backlights, an LED monitor uses light-emitting diodes for backlights. LED monitors usually have superior picture quality, but they come in varying backlight configurations. And some backlight configurations create better images than others.

Until 2014, plasma displays were the most commonly manufactured displays. But then the LCD took over. LCD stands for liquid crystal display. We’ll go over what that means in a minute. But first, it’s important to note that an LED also uses liquid crystals, so the name is somewhat misleading. Technically, an “LED monitor” should really go by the name, “LED LCD monitor.”

First, let’s go over how LCD and LED monitors utilize liquid crystals. The science behind this stuff features an incredibly complicated mix of optics, electrical engineering, and chemistry. But we’ll explain it in layman’s terms.

The key term here is “liquid crystal.” In high school, you might have been taught that there are three states of matter: solids, liquids, and gases. But there are some substances that are actually a strange blend of different states. A liquid crystal is a substance that has properties of both a solid and a liquid. When you get to the upper tiers of science, you begin to discover that everything you once knew is wrong.

Typically, the molecules in a liquid crystal are bunched up in a very dense and unstructured arrangement. But when the liquid crystal is exposed to electricity, the molecules suddenly expand into a very structured, interconnected shape[1].

Pixels are the basic building blocks of a digital image. A pixel is a small dot that can emit colored light. Your display is composed of thousands of pixels, and they’re in a variety of different colors to give you your computer interface and the webpage that you’re currently reading. It works like a mosaic, but each individual piece is much less noticeable.

LCD monitors have backlights behind the screen that emit white light, and the light can’t pass through the liquid crystals while they’re in their liquid arrangement. But when the pixel is in use, the monitor applies an electric current to the liquid crystals, which then straighten out and allow light to pass through them[2].

Standard LCD monitors employ “cold cathode fluorescent lamps,” also known as CCFLs as backlights. These fluorescent lights are evenly placed behind the screen so that they deliver consistent lighting across the display. All regions of the picture will have similar brightness levels.

LED monitors don’t use fluorescent lamps. Instead, they use “light-emitting diodes,” which are extremely small lights. There are two methods of LED backlighting: full-array backlighting and edge lighting.

With full-array backlighting, the LEDs are placed evenly across the entire screen, similar to an LCD setup. But what’s different is that the LEDs are arranged in zones. Each zone of LED lights can be dimmed (also known as local dimming).

Local dimming is a very important feature that can dramatically improve picture quality. The best images are ones that have a high contrast ratio; in other words, images that have both very bright pixels and very dark pixels simultaneously.

When there’s an area of the picture that needs to be darker (a night sky, for instance), the LEDs in that region of the picture can be dimmed to create a truer black. This is not possible on standard LCD monitors, where the entire picture is lit evenly throughout.

There are no local dimming capabilities in edge-lighted displays, so they can’t create pictures that are as high-quality as those created by full-array LEDs. However, edge lighting enables manufacturers to create extremely thin displays that don’t cost as much to produce - and which are better for a tight budget.

When it comes to picture quality, full-array LED monitors are almost always superior to LCD monitors. But bear in mind that only full-array LEDs are superior. Edge-lit LEDs may actually be inferior to LCD monitors.

A full-array LED monitor should be your number one choice for gaming. Steer clear if its edge lighting. The problem with edge lighting is that you’ll have fewer optimal viewing angles with which to play games. That’s not an issue if you prefer to sit directly in front of the screen while you’re gaming. But if you like to kick back in your chair or view from different angles, you’ll find that an edge-lit LED loses visibility as you move away from the center viewing angle.

But even if you play while you’re directly in front of the monitor, edge-lit LEDs have more issues with glare than full-array LEDs do. That’s because of the uneven lighting (very bright around the edges, darker as you approach the center of the display). Because the pixels are evenly lit, LCD monitors tend to have better viewing angles and anti-glare than edge-lit LEDs.

Edge-lit LEDs do have two big advantages. If you have a very tight space in which to fit your monitor, you’ll like having an edge-lit LED because they’re usually thinner than the other types. They’re also less expensive to manufacture, which make them easier on the wallet.

When you’re shopping for a new display, don’t forget to review all of its specs. While the backlighting type is important, you should also take the resolution and refresh rate into account.

Resolution refers to how many pixels are displayed on the monitor. Remember, the more pixels you have, the more dynamic your composition of colors can be. The highest-quality monitors have resolutions of at least 1920 x 1080.

Refresh rate refers to how quickly your monitor updates the display with new information from your computer’s GPU. If you’re a gamer, it’s important that you get a monitor with a very fast refresh rate (30 Hz to 60 Hz) so you won’t suffer from screen tearing - a nasty visual effect that happens when your monitor can’t keep up the pace with the GPU.

Because LED monitors create better pictures than LCD monitors, nearly all of HP’s displays are built with LED backlights. When you’re browsing through the HP LED monitors, you might notice that some of them are equipped with either “IPS” or “AHVA” technology. These refer to the types of liquid crystal panels that are used. Both are fantastic, although they have some minor differences:

You’ll also see that some monitors have “TN” LED backlights. This is the oldest form of liquid crystal technology. It’s still very effective, but TN panels are typically used in small, work-oriented monitors that are made to be mounted or used in the field.

HP OMEN gaming monitors are built for the power PC gamer. One of the best gaming monitors for your rig is the HP OMEN 32 32-inch display. This LED monitor has VA-type panels, which help give it a fast refresh rate that’s perfect for high-performance gaming.

If you’re a digital illustrator, video editor, photo editor, or special effects wiz, you should give the HP EliteDisplay S270n 27-inch 4K micro edge monitor a look. When you’re creating digital art, you need the most expansive resolution and highest-quality color production possible, and that’s what you’ll get with this IPS-equipped monitor. The micro edge screen makes it easy to use dual monitors, but the 27-inch screen alone gives you a wide interface to work on.

If you’re a business person, try one our HP EliteDisplay monitors, like the HP EliteDisplay E243 23.8-inch monitor. The IPS LED display is gorgeous and will give you a crisp and clear picture no matter what software you’re using. The micro edges make it perfect for a dual monitor setup, and the 23.8-inch size is wide, but not too large to accommodate a second monitor or to fit into tighter workstations.

There are some up-and-coming technologies that are making LED displays even better. OLED and QLED displays are bound to become more commonplace in the future.

“OLED” stands for “organic light-emitting diode.” What makes an OLED unique is that each pixel has a light source that can be individually shut off. On an LED monitor, the only way to keep a pixel from emitting light is to keep the liquid crystal closed. It’s effective, but not perfect - a small portion of light will always seep through. On an OLED monitor, each pixel’s light can be entirely shut off so no light at all will emanate through the liquid crystal. These means you can get truer blacks, which means deeper contrast ratios and better image quality.

There are two additional advantages. First, OLED monitors can be made even thinner than LED monitors because there’s not a separate layer of LEDs behind the pixels. Second, these monitors are more energy efficient because the pixels will only draw power when their light is turned on. One of the downsides, though, is that pixel burn-in will be more noticeable since some pixels will inevitably be used more than others[4].

“QLED” stands for “quantum light-emitting diode.” In a QLED monitor, each pixel has a “quantum dot.” Quantum dots are tiny phosphor particles that glow when you shine a light upon them[5].

Why would you need a glowing particle over each pixel? Because LEDs aren’t very good at emitting bright light. The brightest color is white. But an LED doesn’t emit white light – it emits blue light. Each LED is given a yellow phosphor coating to make it appear less blue and more white, but it’s still not true white. The “blueness” of LEDs negatively impacts the red, blue, and green colors on LED displays. LED monitors have automatic features that adjust the RGB colors to compensate for the blue light, but it can’t compensate for the weaker light intensity.

Displays are a complicated science, right? But next time you’re s