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ArcticMyst Security by Avery

A140 under glass?

Joined
Aug 13, 2010
Messages
839
Points
28
What would be the pitfalls of making a >1W 445 build in a waterproof host but have the stock (ar coated) glass left in?
I'm guessing reduced output, reflection back into the diode, possibly too much temp differential in the glass itself might even crack it.
Any thoughts on this?
Tried searching it for a while but no joy.

This host with a heatsink might be an idea with a low duty cycle
http://cgi.ebay.com/XTAR-Waterproof...4138079?pt=US_Flashlights&hash=item230a264edf
But I would likely use a larger "headed" host for better runtimes
 





Joined
Sep 16, 2007
Messages
3,658
Points
113
What would be the pitfalls of making a >1W 445 build in a waterproof host but have the stock (ar coated) glass left in?
I'm guessing reduced output, reflection back into the diode, possibly too much temp differential in the glass itself might even crack it.
Any thoughts on this?
Tried searching it for a while but no joy.

This host with a heatsink might be an idea with a low duty cycle
XTAR Waterproof 18650 CREE Q5 LED Flashlight Torch B01 - eBay (item 150494138079 end time Sep-22-10 19:32:10 PDT)
But I would likely use a larger "headed" host for better runtimes

I think you are over-estimating the power of ~1W.
It's not even close to enough to crack glass.

Depending on the coating, thickness, and quality of the glass, you will lose between 3-8% of your power. Reflection in this case should not cause any problems.

Go for it. Build the laser and report your findings. :beer:
 
Joined
Aug 13, 2010
Messages
839
Points
28
Sound promising, orders for hosts (3) have been sent ^_^
Now the tedious monotony of waiting on Hongkong postal workers begins :crackup:
 




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