Recent content by gbravetti

what about the ir pass filter you can found on IR receivers, for example the ir pass filter used on the camera of a wiimote from nintendo wii?

Craggrat: Well I think that if the laser light is not focused, I mean not concentrated on a little spot, it doesn't have to be dangerous, depending on the power of the laser obviously, is like to watch at the sun, or watch at the sun trough a lens that concentrate all it's power on a very...

I read that some lasers that operates at the visible spectrum can also emite infra red radiation. I wondering if that radiation could be seen using a camera with an ir pass filter. for example, if I place an ir pass filter (taken from a remote controller) over my macbook camera (macbook camera...

Hi Jerry, After i asked here I thought that may be I can reach more ppl creating an individual thread, many ppl just read the first post then go directly to a quick answer, so a different question on the middle of several responses could be unnoticed. That is "why", but doesn't means that is...

I'm working on a project that involves some defocused IR Lasers, to be detected with an IR camera, I'm talking about a defocused ir laser that will produce a 1 inch diameter dot at 3 feet (2.5 cm at 60cm). For those guys that deals with laser related maths: How many mw do you think will be...

(Sorry, I don't see any IR Laser there (video 2:30), if there is a laser, is very out of focus) By the way, I'm working on a project that involves some defocused IR Lasers, to be detected with an IR camera, I'm talking about a defocused ir laser that will produce a 1 inch diameter dot at 3 feet...

well, I think my laser is not a real 200mw laser, to feel something on the skin I have to put the hand very close keep it very steady for some seconds. I was playing some time ago with a real 200mw laser and I remember that you can feel the laser on skin almost immediately.

oh no, the crowd will be at several meters and I will be at not less than 50cms, anyway the idea is that I won't see the beam reflected on my hand, but may be I'll see some little reflections on my fingers. I'm new to lasers, I read that reflections could be dangerous specially on glossy...

Hi, I'm working on a laser instrument, like a laser arp but is just a single beam. It could be dangerous for the crowd or for me to see the beam reflected on my hand/fingers? I'm using a 40USD 200mW 532nm Green Laser Module (3V 11.9mm) Thanks!