FYI: Under US FDA laws , rules, and regulations laser pointers are limited to 5mW maximum. It is illegal to import and sell from within the USA to a customer within the USA any laser pointers >5mW "Laser products promoted for pointing and demonstration purposes are limited to hazard Class IIIa by FDA regulation.
hello, Ive been attempting to source laser modules and diodes lately for the purpose of reselling cheaply. Lately though ive noticed that many high powered laser pointers seem to cost far less than the diode of that power rating and wavelength! whats up with that? ive confirmed with a few...
I have a cheap 5MW green laser that. When I adjust the lens at the front by screwing it in or out the laser beam diameter becomes smaller or larger. When the beam is spread out I notice that the beam is not uniform, it contains round patches and there are radial patterns as well as show in this...
Ok so as a kid I had one of those cheap $30 laser pointers and I remember you could shine them pretty far. I would say the length of 3-4 footballl fields maybe further, if it was pitch black out in the city. At that range maybe a little further you could see a faint red dot on a building. My...
Everyone knows that a couple of layers of developed exposed color print film makes a good Infrared Pass filter that blocks visible light. The question is, how good does it block visible light and pass Infrared? The following link: > Film makes infrared...
I often hear people complaining about their lasers "mod hopping." I have a HeNe that mod hops . . . . . . and I love it. Here are a couple of short clips so you can see how interesting it can be :angel: YVzOTgCfPc0 SdoaA482Q6U Peace, dave
Hello everyone I am using xy galvo motors and ı have dac circuit. I can scan square area now. Bu I need to read g code with them. all examples are for stepper motors. how can I do it. Anyone have idea ?
I dont know if single mode 638s are made, but multi-mode 638s have horrible divergence, possibly the worst, not good for astronomy. you could email jack and ask about the temperature handling on those optotonics pointers if no one answers that portion of your question.
