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Posted: 5/16/2014 11:09:30 AM EDT
| Hey fellas - any updates on which lasers are daylight visible out to 50y? I found an older thread from 2011 so was looking for updates. |
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Hey fellas - any updates on which lasers are daylight visible out to 50y? I found an older thread from 2011 so was looking for updates. I just purchased a green class IIIb laser. It is very powerful at 30mw. Had a long discussion with the guy that built it ...not from China...and asked him about the visibility factor in daylight. He builds them and told me no laser (beams) are actually visible. The reason you can see the beam sometimes is because of dust and other particles in the air. Now the color green will be the most visible due to its spectrum and wave length. If you want to learn about them check out his web site and talk to him...his name is Fred. https://stalktech.com |
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Sorry to intrude here, but to me that is an illuminator more than a laser. My envision of a laser is a beam no bigger than 1/4" or slightly more, that maintains constant size to infinity based on the application. Meaning utilized on hand held combat arms. I've yet to see anything of this strength or intensity that does not get larger the further distance traveled. Unless my concept of a beam is wrong. |
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Sorry to intrude here, but to me that is an illuminator more than a laser. My envision of a laser is a beam no bigger than 1/4" or slightly more, that maintains constant size to infinity based on the application. Meaning utilized on hand held combat arms. I've yet to see anything of this strength or intensity that does not get larger the further distance traveled. Unless my concept of a beam is wrong. That laser focuses down to a tight beam just like what you are accustomed to. All laser beams expand with distance. Google it. The lasers NASA pointed at the moon began with a beam of aprox. 1mm. When it hit the target on the moon it was about 1/4 mile wide. Look at the specs of any laser sight and it will generally tell you what the beam diameter is at say 100 yds. or farther. Check out this info. http://www.wickedlasers.com/laser-tech/laser_beam.html |
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Very intuitive, ewetstone. I've yet to research lasers much. And it appears my expectations of them can't necessarily be had. Or can they, at a price. Lasers, in thought have always spiked curiosity. Ever since learning of the RDS they have been in my thoughts as a potential tool to enhance a direct POI. What you've shared with me is very intriguing. Thanks for that. I've some studying to do. |
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Very intuitive, ewetstone. I've yet to research lasers much. And it appears my expectations of them can't necessarily be had. Or can they, at a price. Lasers, in thought have always spiked curiosity. Ever since learning of the RDS they have been in my thoughts as a potential tool to enhance a direct POI. What you've shared with me is very intriguing. Thanks for that. I've some studying to do. Hey...I am just learning this stuff too. 
Give Fred a call at StalkTech.com.....he builds them for hunting and other uses and could give you far more info than I. |
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Quoted: Hey...I am just learning this stuff too. Give Fred a call at StalkTech.com.....he builds them for hunting and other uses and could give you far more info than I. Quoted: Quoted: Very intuitive, ewetstone. I've yet to research lasers much. And it appears my expectations of them can't necessarily be had. Or can they, at a price. Lasers, in thought have always spiked curiosity. Ever since learning of the RDS they have been in my thoughts as a potential tool to enhance a direct POI. What you've shared with me is very intriguing. Thanks for that. I've some studying to do. Hey...I am just learning this stuff too. Give Fred a call at StalkTech.com.....he builds them for hunting and other uses and could give you far more info than I. By my not thinking, which I did not, I never thought for a second that the lasers, beam, could be focused and narrowed like a diopter. Given a relative capable distance, this could be inspiring. My apology to the OP for sort of side-tracking your inquiry. |
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I've subscribed to this thread and bookmarked stalktech for future resource. From the sounds of things, this could be beneficial. By my not thinking, which I did not, I never thought for a second that the lasers, beam, could be focused and narrowed like a diopter. Given a relative capable distance, this could be inspiring. My apology to the OP for sort of side-tracking your inquiry. Quoted:
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Very intuitive, ewetstone. I've yet to research lasers much. And it appears my expectations of them can't necessarily be had. Or can they, at a price. Lasers, in thought have always spiked curiosity. Ever since learning of the RDS they have been in my thoughts as a potential tool to enhance a direct POI. What you've shared with me is very intriguing. Thanks for that. I've some studying to do. Hey...I am just learning this stuff too.
Give Fred a call at StalkTech.com.....he builds them for hunting and other uses and could give you far more info than I. By my not thinking, which I did not, I never thought for a second that the lasers, beam, could be focused and narrowed like a diopter. Given a relative capable distance, this could be inspiring. My apology to the OP for sort of side-tracking your inquiry. Right...I purchased this one from Fred at StalkTech.com after purchasing 2 before it and returning them. This one will focus from a tight beam to a larger illuminator type of beam. At 30mw its really something and like the fact that he builds them himself...right here in the USA. 
https://stalktech.com/shop/laser-designator |
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I looked for, but did not find, a video. It would be great to see a video of the laser during dusk/dark lighting conditions at the progressive field of magnification ranges. I don't know of a video of this laser. I can tell you though after returning 2 other units that cost about the same and after months of research and searching the net...this is a keeper. One of the things that I did learn from Fred is that 30mw does not mean it is 6 times stronger than a 5mw laser...doesn't work that way. He did try to explain how output power is computed and facts about diodes but most of it went over my head. 
Suffice it to say this blows away what competition I have seen. It is also rated as a class IIIb laser. All the others I have looked at with the exception of units for sale to just military and law enforcement are class IIIa. I have a Beamshot green laser I bought 2 years ago for my 45 handgun that cost 270.00 that doesnt touch this. ETA: Copied this from their website: "Lasers: When it comes to lasers, once again, the difference is in the components, the body of our NH01 is not unique to Stalk Tech but the laser modules we use are. When it comes to Laser modules, especially green ones, quality is paramount. There are no less than 5 Chinese manufacturers that sell lasers based on the NH01 platform, out of these, 4 of them use a 5mw laser module and 1 uses an 18mw module, Stalk Tech's NH01 uses a 30mw module. The difference in price between a 30mw module and a 5mw module is well over 2000%. Furthermore, 5mw green lasers modules are typically recycled defective laser modules that did not make the grade and were originally destined to the cheap throw away laser pointer industry. These laser modules have an extremely high failure rate and are not nearly strong enough to power a proper laser designator." |
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The one thing that is paramount in green lasers...
Avoid at all costs DPSS green lasers, on a DPSS they use an infrared laser diode and split the frequency to achieve green. The down side? It's still pouring out a TON of infrared which your eye will not register and you can wind up blind. In addition DPSS lasers dim BADLY in cold weather (below 40). You want a Native green laser diode such as the unit manufactured by Osram. |
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The one thing that is paramount in green lasers... Avoid at all costs DPSS green lasers, on a DPSS they use an infrared laser diode and split the frequency to achieve green. The down side? It's still pouring out a TON of infrared which your eye will not register and you can wind up blind. In addition DPSS lasers dim BADLY in cold weather (below 40). You want a Native green laser diode such as the unit manufactured by Osram. I am not sure...but after reading this I shot off an email to the guy to ask. 
Thanx for the heads up! ETA: He does use Osram/Ostar components. The following is what he sent me: "Yes, I use dpss, everyone uses dpss and all dpss work the same, they all start off as IR and are split to produce green, all green lasers are dpss, 0sram is one of 2 companies that make a solid state. But a, the wavelength is too low and b the cost is $200 for a unit that outputs the exact same amount of light. And they are just as dangerous, if you pour boiling water into your eye or if you pour boiling wine into your eye, you will experience the same burn. That is about the best I can explain it to you. You would be hard pressed to find anyone to tell you that a native 30mw green laser will cause less or more damage to your eye than a dpss green or an infrared. All three, given the same power output, will do the exact same damage, no more, no less." Does this seem accurate? |
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ETA: He does use Osram/Ostar components. The following is what he sent me: "Yes, I use dpss, everyone uses dpss and all dpss work the same, they all start off as IR and are split to produce green, all green lasers are dpss,TOTAL BULLSHIT! 0sram is one of 2 companies that make a solid state. But a, the wavelength is too low and b the cost is $200 for a unit that outputs the exact same amount of light. And they are just as dangerous, if you pour boiling water into your eye or if you pour boiling wine into your eye, you will experience the same burn. That is about the best I can explain it to you. You would be hard pressed to find anyone to tell you that a native 30mw green laser will cause less or more damage to your eye than a dpss green or an infrared. All three, given the same power output, will do the exact same damage, no more, no less." Does this seem accurate? NO, it is NOT accurate. Do yourself a MAJOR favor, read the article on the dangers of DPSS lasers...LINK Here is a link to how cheap a Native Osram Green laser diode (& these are NOT DPSS) can be purchased...LINK Green laser pointers appeared on the market circa 2000, and are the most common type of DPSS lasers (also called DPSSFD for "diode pumped solid state frequency-doubled"). They are more complicated than standard red laser pointers, because laser diodes are not commonly available in this wavelength range. The green light is generated in an indirect process, beginning with a high-power (typically 100–300 mW) infrared AlGaAs laser diode operating at 808 nm. The 808 nm light pumps a crystal of neodymium-doped yttrium aluminum vanadate (Nd:YVO4) (or Nd:YAG or less common 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. The Nd:YVO4 or other Nd-doped crystal is coated on the diode side with a dielectric mirror that reflects at 808 nm and transmits at 1064 nm. The crystal is mounted on a copper block, acting as a heat sink; its 1064 nm output is fed into a crystal of potassium titanyl phosphate (KTP), mounted on a heat sink in the laser cavity resonator. The orientation of the crystals must be matched, as they are both anisotropic and the Nd:YVO4 outputs polarized light. This unit acts as a frequency doubler, and halves the wavelength to the desired 532 nm. The resonant cavity is terminated by a dielectric mirror that reflects at 1064 nm and transmits at 532 nm. An infrared filter behind the mirror removes IR radiation from the output beam (this may be omitted or inadequate in less-expensive "pointer-style" green lasers), and the assembly ends in a collimator lens. Nd:YVO4 is replacing other Nd-doped materials such as Nd:YAG and Nd:YLF in such systems because of lower dependency on the exact parameters of the pump diode (therefore allowing for higher tolerances), wider absorption band, lower lasing threshold, higher slope efficiency, linear polarization of output light, and single mode output. For frequency doubling of higher power lasers, LBO is used instead of KTP. Newer lasers use a composite Nd:YVO4/KTP crystal instead of two discrete ones. Some green lasers operate in pulse or quasi-continuous wave (QCW) mode, to reduce cooling problems and prolong battery life. An announcement in 2009 of a direct green laser (which does not requiring doubling) promises much higher efficiencies and could foster the development of new color video projectors. In 2012, Nichia and OSRAM developed and manufactured merchant high-power green laser diodes (515/520 nm) which can emit green laser directly. |
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NO, it is NOT accurate. Do yourself a MAJOR favor, read the article on the dangers of DPSS lasers...LINK Here is a link to how cheap a Native Osram Green laser diode (& these are NOT DPSS) can be purchased...LINK Green laser pointers appeared on the market circa 2000, and are the most common type of DPSS lasers (also called DPSSFD for "diode pumped solid state frequency-doubled"). They are more complicated than standard red laser pointers, because laser diodes are not commonly available in this wavelength range. The green light is generated in an indirect process, beginning with a high-power (typically 100–300 mW) infrared AlGaAs laser diode operating at 808 nm. The 808 nm light pumps a crystal of neodymium-doped yttrium aluminum vanadate (Nd:YVO4) (or Nd:YAG or less common 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. The Nd:YVO4 or other Nd-doped crystal is coated on the diode side with a dielectric mirror that reflects at 808 nm and transmits at 1064 nm. The crystal is mounted on a copper block, acting as a heat sink; its 1064 nm output is fed into a crystal of potassium titanyl phosphate (KTP), mounted on a heat sink in the laser cavity resonator. The orientation of the crystals must be matched, as they are both anisotropic and the Nd:YVO4 outputs polarized light. This unit acts as a frequency doubler, and halves the wavelength to the desired 532 nm. The resonant cavity is terminated by a dielectric mirror that reflects at 1064 nm and transmits at 532 nm. An infrared filter behind the mirror removes IR radiation from the output beam (this may be omitted or inadequate in less-expensive "pointer-style" green lasers), and the assembly ends in a collimator lens. Nd:YVO4 is replacing other Nd-doped materials such as Nd:YAG and Nd:YLF in such systems because of lower dependency on the exact parameters of the pump diode (therefore allowing for higher tolerances), wider absorption band, lower lasing threshold, higher slope efficiency, linear polarization of output light, and single mode output. For frequency doubling of higher power lasers, LBO is used instead of KTP. Newer lasers use a composite Nd:YVO4/KTP crystal instead of two discrete ones. Some green lasers operate in pulse or quasi-continuous wave (QCW) mode, to reduce cooling problems and prolong battery life. An announcement in 2009 of a direct green laser (which does not requiring doubling) promises much higher efficiencies and could foster the development of new color video projectors. In 2012, Nichia and OSRAM developed and manufactured merchant high-power green laser diodes (515/520 nm) which can emit green laser directly. Quoted:
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ETA: He does use Osram/Ostar components. The following is what he sent me: "Yes, I use dpss, everyone uses dpss and all dpss work the same, they all start off as IR and are split to produce green, all green lasers are dpss,TOTAL BULLSHIT! 0sram is one of 2 companies that make a solid state. But a, the wavelength is too low and b the cost is $200 for a unit that outputs the exact same amount of light. And they are just as dangerous, if you pour boiling water into your eye or if you pour boiling wine into your eye, you will experience the same burn. That is about the best I can explain it to you. You would be hard pressed to find anyone to tell you that a native 30mw green laser will cause less or more damage to your eye than a dpss green or an infrared. All three, given the same power output, will do the exact same damage, no more, no less." Does this seem accurate? NO, it is NOT accurate. Do yourself a MAJOR favor, read the article on the dangers of DPSS lasers...LINK Here is a link to how cheap a Native Osram Green laser diode (& these are NOT DPSS) can be purchased...LINK Green laser pointers appeared on the market circa 2000, and are the most common type of DPSS lasers (also called DPSSFD for "diode pumped solid state frequency-doubled"). They are more complicated than standard red laser pointers, because laser diodes are not commonly available in this wavelength range. The green light is generated in an indirect process, beginning with a high-power (typically 100–300 mW) infrared AlGaAs laser diode operating at 808 nm. The 808 nm light pumps a crystal of neodymium-doped yttrium aluminum vanadate (Nd:YVO4) (or Nd:YAG or less common 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. The Nd:YVO4 or other Nd-doped crystal is coated on the diode side with a dielectric mirror that reflects at 808 nm and transmits at 1064 nm. The crystal is mounted on a copper block, acting as a heat sink; its 1064 nm output is fed into a crystal of potassium titanyl phosphate (KTP), mounted on a heat sink in the laser cavity resonator. The orientation of the crystals must be matched, as they are both anisotropic and the Nd:YVO4 outputs polarized light. This unit acts as a frequency doubler, and halves the wavelength to the desired 532 nm. The resonant cavity is terminated by a dielectric mirror that reflects at 1064 nm and transmits at 532 nm. An infrared filter behind the mirror removes IR radiation from the output beam (this may be omitted or inadequate in less-expensive "pointer-style" green lasers), and the assembly ends in a collimator lens. Nd:YVO4 is replacing other Nd-doped materials such as Nd:YAG and Nd:YLF in such systems because of lower dependency on the exact parameters of the pump diode (therefore allowing for higher tolerances), wider absorption band, lower lasing threshold, higher slope efficiency, linear polarization of output light, and single mode output. For frequency doubling of higher power lasers, LBO is used instead of KTP. Newer lasers use a composite Nd:YVO4/KTP crystal instead of two discrete ones. Some green lasers operate in pulse or quasi-continuous wave (QCW) mode, to reduce cooling problems and prolong battery life. An announcement in 2009 of a direct green laser (which does not requiring doubling) promises much higher efficiencies and could foster the development of new color video projectors. In 2012, Nichia and OSRAM developed and manufactured merchant high-power green laser diodes (515/520 nm) which can emit green laser directly. Thanx for the information. Just curious....what would it take to replace the diode in my laser with the one in your link on Amazon? |
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You would need someone who is familiar with solid state lasers.
The native green diodes require a heat sink (these are NOT <5mw diodes!) in addition you need the correct driver / power regulation . I'm currently trying to find someone to perform this exact job on a factory FN P90 laser. There are a couple of laser forums, but they are like Candlepowerforums. They give me a headache
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Personally I wont be shoving this device down my eye socket or aiming it at anyone.. with that said does anyone else recommend this unit? It will be mainly for night time for distances under 50 yards. Day time capability would be gravy. But reflections on IR are virtually not detectable by the human eye... Class IIIb: Lasers in this class may cause damage if the beam enters the eye directly. This generally applies to lasers powered from 5-500 mW. Lasers in this category can cause permanent eye damage with exposures of 1/100th of a second or less depending on the strength of the laser. A diffuse reflection is generally not hazardous but specular reflections can be just as dangerous as direct exposures. Protective eyewear is recommended when direct beam viewing of Class IIIb lasers may occur. And when they say "direct beam viewing" they are referring to observing the beam, not looking directly into the laser. Near-infrared laser beams are much more hazardous than visible light with the same power level, because their radiation is focused to the retina just in the same way as visible light, whereas the blinking reflex of the human eye (normally closing the eye's lid quickly when the intensity is too high) is not active. Also, no warning is possible e.g. through weak stray light: nothing can be seen when a dangerous beam propagates in an unexpected direction. In December 2009, we purchased three inexpensive, green laser pointers (GLPs) for $15 each. Advertised to produce ‘10mW’ of green light, the common packaging of the devices suggests that they were produced by the same manufacturer, although they carried no traceable trademarks. One of the pointers produced much weaker green light than the other two. We performed quantitative measurements, showing that the weak unit emitted approximately 10 times more invisible IR light than the visible green. Green light activates the eye's blink reflex, which provides a protective mechanism. However, we are completely vulnerable to IR radiation, since exposure to it may only be noticed after significant retinal damage has occurred. After further investigation, we found that this problem is common in low-cost GLPs, although its seriousness varies widely. The decision is yours the same as whether you want to risk learning to walk by the feel of a white cane. 
Look, this is DANGEROUS! And I've "done" dangerous for years... I've went into barricaded hostage situations involving an armed felon I have a Commercial Display Fireworks license and have shot up to 16" shells that weighed 80 pounds I have been in pursuits on Interstates in excess of 140 miles per hour BUT I draw the line on Chinese DPSS lasers. |
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there are a couple of things to mention here when it comes to lasers (green and IR). The vast majority of all of the major brands are using DPSS lasers at this point. The only major company that I am aware of that's using a green laser diode (vs. module) is LaserMax on their new guide rod lasers. could be some of the other high end units ($800+) are using them but AFAIK most of the standard players (CT, Viridian, etc) are using DPSS lasers. If they are using modules they don't mention it anywhere in their literature or advertising. As the price of direct modules drops (mainly from the entertainment/phone industry utilizing the designs for projections along with blue and red lasers) they will become more common but for now most are still using DPSS technology. I just checked and the Laser Devices DBAL green lasers (532nm) are DPSS per their literature on the website.
The link that was provided about the dangers of IR with the DPSS lasers was specifically talking about laser pointers that are lacking IR filters. Again, most of the major brands I am sure are incorporating IR filters into their green lasers. The idea with a class 3r laser (the new designation for IIIa) is that a 5mW visible beam will create a blink reflex and you close your eyes, limiting damage. Anything over 5mW (according to the FDA) can cause damage even if you blink. that's why they limit civilian lasers to 5mw. Also why IR lasers are limited to 1mW as you don't get the blink reflex because you can't see the beam, but 1mW is not enough to cause retinal damage in most cases. Hence the lack of laser warnings on 1mW IR lasers. going back to the original poster- you can see a good green laser in daylight (the dot, not the beam) if you have the right conditions. but full sunlight, white background, it's going to be very hard to see. I have a 5mW green laser and in any type of overcast or dim settings, the range is as far as I am comfortable shooting. at night you can see the actual beam in most cases depending upon conditions (humidity, dust, fog, etc). I've played with higher output lasers but IMHO the risks of causing eye damage from reflections outweigh any advantage a little extra power might give you when it comes to range. with the right conditions or inside a building, 5mW is all you need. Full daylight, I would guess 20-30mW still isn't going to give you a perfect dot to see.. green is still much easier to pick up, at least for myself. sometimes it's hard to see the green laser dot when you are just waving it around in daylight, but if it's weapons mounted and sighted in, and you are looking down your sights, it's still not too hard to pick out the laser dot even in poor conditions (full sunlight, lighter background). |
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Quoted: But reflections on IR are virtually not detectable by the human eye... Class IIIb: Lasers in this class may cause damage if the beam enters the eye directly. This generally applies to lasers powered from 5-500 mW. Lasers in this category can cause permanent eye damage with exposures of 1/100th of a second or less depending on the strength of the laser. A diffuse reflection is generally not hazardous but specular reflections can be just as dangerous as direct exposures. Protective eyewear is recommended when direct beam viewing of Class IIIb lasers may occur. And when they say "direct beam viewing" they are referring to observing the beam, not looking directly into the laser. Near-infrared laser beams are much more hazardous than visible light with the same power level, because their radiation is focused to the retina just in the same way as visible light, whereas the blinking reflex of the human eye (normally closing the eye's lid quickly when the intensity is too high) is not active. Also, no warning is possible e.g. through weak stray light: nothing can be seen when a dangerous beam propagates in an unexpected direction. In December 2009, we purchased three inexpensive, green laser pointers (GLPs) for $15 each. Advertised to produce ‘10mW’ of green light, the common packaging of the devices suggests that they were produced by the same manufacturer, although they carried no traceable trademarks. One of the pointers produced much weaker green light than the other two. We performed quantitative measurements, showing that the weak unit emitted approximately 10 times more invisible IR light than the visible green. Green light activates the eye's blink reflex, which provides a protective mechanism. However, we are completely vulnerable to IR radiation, since exposure to it may only be noticed after significant retinal damage has occurred. After further investigation, we found that this problem is common in low-cost GLPs, although its seriousness varies widely. The decision is yours the same as whether you want to risk learning to walk by the feel of a white cane. Look, this is DANGEROUS! And I've "done" dangerous for years... I've went into barricaded hostage situations involving an armed felon I have a Commercial Display Fireworks license and have shot up to 16" shells that weighed 80 pounds I have been in pursuits on Interstates in excess of 140 miles per hour BUT I draw the line on Chinese DPSS lasers. Quoted: Quoted: Personally I wont be shoving this device down my eye socket or aiming it at anyone.. with that said does anyone else recommend this unit? It will be mainly for night time for distances under 50 yards. Day time capability would be gravy. But reflections on IR are virtually not detectable by the human eye... Class IIIb: Lasers in this class may cause damage if the beam enters the eye directly. This generally applies to lasers powered from 5-500 mW. Lasers in this category can cause permanent eye damage with exposures of 1/100th of a second or less depending on the strength of the laser. A diffuse reflection is generally not hazardous but specular reflections can be just as dangerous as direct exposures. Protective eyewear is recommended when direct beam viewing of Class IIIb lasers may occur. And when they say "direct beam viewing" they are referring to observing the beam, not looking directly into the laser. Near-infrared laser beams are much more hazardous than visible light with the same power level, because their radiation is focused to the retina just in the same way as visible light, whereas the blinking reflex of the human eye (normally closing the eye's lid quickly when the intensity is too high) is not active. Also, no warning is possible e.g. through weak stray light: nothing can be seen when a dangerous beam propagates in an unexpected direction. In December 2009, we purchased three inexpensive, green laser pointers (GLPs) for $15 each. Advertised to produce ‘10mW’ of green light, the common packaging of the devices suggests that they were produced by the same manufacturer, although they carried no traceable trademarks. One of the pointers produced much weaker green light than the other two. We performed quantitative measurements, showing that the weak unit emitted approximately 10 times more invisible IR light than the visible green. Green light activates the eye's blink reflex, which provides a protective mechanism. However, we are completely vulnerable to IR radiation, since exposure to it may only be noticed after significant retinal damage has occurred. After further investigation, we found that this problem is common in low-cost GLPs, although its seriousness varies widely. The decision is yours the same as whether you want to risk learning to walk by the feel of a white cane. Look, this is DANGEROUS! And I've "done" dangerous for years... I've went into barricaded hostage situations involving an armed felon I have a Commercial Display Fireworks license and have shot up to 16" shells that weighed 80 pounds I have been in pursuits on Interstates in excess of 140 miles per hour BUT I draw the line on Chinese DPSS lasers. |
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Following a very informative discussion with PursiutSS earlier in this thread concerning the danger to the eyes of green DPSS lasers emitting "splashes" of IR radiation....I was relieved to remember the glasses I shoot with.
I wear a pair of ballistic Elvex OVR-Spec II Safety Glasses which are in Compliance: •ANSI Z87.1-2010 certified. •Vo Ballistic Rated: Tested to US Military standard MIL PRF-31013, Vo impact resistance requirement of 640 feet per second, 4 times the ANSI Z87+ standard. Under ANSI Z87+ standard...eyes are protected from non-ionizing radiation which includes IR radiation. Now...I have no intention of ever pointing my green laser anywhere near my eyes but its a bit of relief to have had the extra eye protection already in place.....as long as they actually work as rated.
To PursiutSS....Thanx very much for the education. As you can see it got me thinking.
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