grainde
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- Jan 29, 2012
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OK just thought I'd post this as many people recommend these glasses for use with both blue 445 nm and green 532 nm lasers.
These are the goggles I bought;
Laser Safety Goggles EP1 for 200-540nm & 800-2000nm CE Marked with Case | eBay
and this is the 5 mW green;
Firefly Product Details
Although I have recently bought a Laser bee usb LPM, I don't actually have it with me. So I thought a good way to demonstrate how ineffective these goggles are, even against a 5 mW green, would be to show how well they block the light when placed in front of the beam. I have 2 pairs of these goggles and both behave in exactly the same fashion. These glasses have an OD of 4 at 532 nm (Untitled Document) and should therefore only let 0.0005 mW through! I doubt that this would be visible, or as visible, as is clearly seen on the video....please correct me if Im wrong though...
Unfortunately I dont have a higher power green, so maybe someone else with these glasses and a more powerful 532 might be able to do some further testing.
I would just like to say that these glasses perform well with my 445 nm, ie I cannot see any blue light, but merely the fluorescence around the dot. This is in stark contrast to the 5 mW green where I can actually see green light through the glasses, when its reflected off a shiny metallic or white surface. My 445 is probably running at 1.6 W (1.5 A, 3 element glass and M140). As mentioned I haven't had access to my LPM and have therefore not been able to test it either.
Please let me know your thoughts....:beer:
These are the goggles I bought;
Laser Safety Goggles EP1 for 200-540nm & 800-2000nm CE Marked with Case | eBay
and this is the 5 mW green;
Firefly Product Details
Although I have recently bought a Laser bee usb LPM, I don't actually have it with me. So I thought a good way to demonstrate how ineffective these goggles are, even against a 5 mW green, would be to show how well they block the light when placed in front of the beam. I have 2 pairs of these goggles and both behave in exactly the same fashion. These glasses have an OD of 4 at 532 nm (Untitled Document) and should therefore only let 0.0005 mW through! I doubt that this would be visible, or as visible, as is clearly seen on the video....please correct me if Im wrong though...
Unfortunately I dont have a higher power green, so maybe someone else with these glasses and a more powerful 532 might be able to do some further testing.
I would just like to say that these glasses perform well with my 445 nm, ie I cannot see any blue light, but merely the fluorescence around the dot. This is in stark contrast to the 5 mW green where I can actually see green light through the glasses, when its reflected off a shiny metallic or white surface. My 445 is probably running at 1.6 W (1.5 A, 3 element glass and M140). As mentioned I haven't had access to my LPM and have therefore not been able to test it either.
Please let me know your thoughts....:beer:
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