Search results

.....

No...?

Thanks for the reply :) Hey that's not too bad, I would consider giving it a try. Where is a good place to get those+spacer in the US?

Bump??? Are those cheap chinese $15 18650 powered lasers any good?

Bump???

Bump...

Bump...

Yeah I've looked at everything on that a few times. Yeah I know that too, but I am a bit worried about the battery life. How is it? I'm also looking for a laser with a nicer lens and is also still about 30mw; the current lens is horribly speckled, glued in, and not focused. Plus it's a pretty...

Bump...

Hi, I'd prefer there not to be a key lock. Also I'm also looking for one that will definitely be in the 20mw - 30mw range, it's for pointing so nothing more than that.

I need help please before my next set of alkalines die :(

No? Please help ^____________^

Hi everyone, I have an overspec "5mw" AAA greenie from DX, at about 20mw - 30mw but there are a couple things that are really bothering me about it. First is that the lens is dirty (lots of speckles) and not properly focused. Second is that there isn't a good battery choice. Lithium primaries...

Yeah thermopiles look like a much more feasible option TBH...if anyone has suggestions concerning those, they are welcome too :).

One more bump and I will assume this is bad request.

Definitely no practical purpose for this, just a little fun I guess. Yes, I figured they wouldn't be too popular/cheap, but I saw this: Imec significantly reduces cost of germanium-based thermophotovoltaic cells So I assumed firstly that they exist, and secondly that they're not absurdly...

No "real" objective; I'd like to do an experiment with collecting the heat from incandescent bulbs and recycling it. Preferably, the panels would be either transparent (to visible light), or reflective (also visible light only). Thanks for the quick response :).

Hello everyone! I'm looking for thermophotovoltaic panels, the ones that absorb infrared radiation. I've looked around and couldn't find anyway... I posted a similar thread at CPF, but not much is coming up. It might be a tough request though...Thank you so much in advance!

Yes I've sort of given up hope for a cheap greenie with an IR filter. I'll try to contact Rayfoss though. EDIT: Hello Sir, Thanks for your inquiry! Yes, we could add IR filter to focuable laser torch per your requests. But for this pen style laser we can not add IR filter which limited...

Oh yeah I looked through your signature...and I see they are all on the rather pricey side. Anyway, my budget is $20, as mentioned above, so...