I've often wondered about this, but I've never seen a satisfactory answer.
I have a lot of technical hobbies (electronics, computers, RC etc) where you have to house your projects in an enclosure. This is invariably called a housing, case or enclosure. It is never called a 'host'.
A single layer tent will absorb a small percentage of the energy (how much depends on colour and thickness), and scatter the rest into a wider beam. I would not want to use tent fabric as laser goggles, even at 5mW.
I don't know much about best practices for laser shows, but I am uncomfortable watching this:
1000mw LASER - YouTube
I recognise that the exposure time is very short, but you're still repeatedly getting zapped with 1W of 532nm.
Am I being over-cautious?
I know this has been discussed before, but I can't get a feel for the consensus. Are these 200mW modules on eBay ever anything like 200mW of green output? Has anyone tested them?
These are the things I mean:
200mW 532nm Green Laser Diode Module 3.7V-4.2V on eBay (end time 30-Mar-11 01:31:40...
Re: O-like 400mw green - $214 (hitting 600mw) - Review
O-like have now removed the 400mW from their site altogether.
I'd really like a 400-500mW 532nm. Any recommendations? I don't mind paying a bit more, as long as the output is genuine.
Thanks very much.
The reason I want a smaller diameter package is that I'd like to build a 20 diode 30W total output head. My plan is to machine the head from a lump of copper rod, press the diodes into the back, and screw the lenses into tapped holes at the front. I could use the AIXIZ glass...
Can anyone tell me what the smallest collimating lens in a threaded housing is? I need to make a 445nm 1W in a smaller package than the 12mm AIXIZ. I can machine the housing, but I need a lens to use in it.