Greetings everyone! My first post here as I recently acquired a cheapo 405nm laser that took forever to arrive from China. For your curiosity the following link is the product details:
2016 50000mw 405 nm blue purple laser pointer flashing light adjustable focus burn match lit cigarettes purple blue laser light-in Laser Pens from Computer & Office on Aliexpress.com | Alibaba Group
Now I'm positive it's not actually a 50W laser and I doubt it's even 2 W but it certainly can ignite matches reasonably quickly at close range. My father heard I was acquiring a laser and promptly provided me with the following safety glasses:
https://www.innovam.com/en/SG05-55.html
Later today I'll actually be conducting a current draw test to determine the device's power and I'll also try to identify excessive IR emission via reflecting off a CD onto a white page and recording via webcam/digital camera. If I'm exceptionally lucky it will already have an IR filter in place though I sincerely doubt it.
This leads me to the question then of if it makes sense to add an IR filter to the aperture of the laser. I've come across some recommendations to acquire a filter and glue over the end which is fine with me however is this wise? Would there be danger of the filter melting over time (I doubt it as focus point is well past the aperture) plus would one expect to have to periodically replace the IR filter?
For my own use with the glasses acquired I should be fine as they're rated for unfiltered IR but I'd love to get some cheaper glasses for spectators at distance. The following thread from this forum cast the HDE-J74 glasses in a favourable light:
http://laserpointerforums.com/f52/h...-back-7-95-w-case-free-shipping-us-80717.html
If I find my laser does not emit much IR or if an IR filter is a cheap recommended fix then I feel these glasses would provide adequate protection for spectators viewing from greater than 3 ft away (laser shone on non-reflective surface).
Please share your experience with me at your convenience and may the Force be with you all!
2016 50000mw 405 nm blue purple laser pointer flashing light adjustable focus burn match lit cigarettes purple blue laser light-in Laser Pens from Computer & Office on Aliexpress.com | Alibaba Group
Now I'm positive it's not actually a 50W laser and I doubt it's even 2 W but it certainly can ignite matches reasonably quickly at close range. My father heard I was acquiring a laser and promptly provided me with the following safety glasses:
https://www.innovam.com/en/SG05-55.html
Later today I'll actually be conducting a current draw test to determine the device's power and I'll also try to identify excessive IR emission via reflecting off a CD onto a white page and recording via webcam/digital camera. If I'm exceptionally lucky it will already have an IR filter in place though I sincerely doubt it.
This leads me to the question then of if it makes sense to add an IR filter to the aperture of the laser. I've come across some recommendations to acquire a filter and glue over the end which is fine with me however is this wise? Would there be danger of the filter melting over time (I doubt it as focus point is well past the aperture) plus would one expect to have to periodically replace the IR filter?
For my own use with the glasses acquired I should be fine as they're rated for unfiltered IR but I'd love to get some cheaper glasses for spectators at distance. The following thread from this forum cast the HDE-J74 glasses in a favourable light:
http://laserpointerforums.com/f52/h...-back-7-95-w-case-free-shipping-us-80717.html
If I find my laser does not emit much IR or if an IR filter is a cheap recommended fix then I feel these glasses would provide adequate protection for spectators viewing from greater than 3 ft away (laser shone on non-reflective surface).
Please share your experience with me at your convenience and may the Force be with you all!
