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Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please Good luck to whoever wins it. I can't currently afford one :(

The guy who runs it, Max has an account on here. he is maxLZR.

I know it is not green+blue since my green-pass blue-block goggles completely block it. I have no way of telling it it is 473nm LED or a filter unless anyone has any idea since it is not in the manual and I don't trust myself to put it back together properly (it is a Fujitsu ah532).

I placed an order a couple of days ago including a partial shipping refund due to combining orders. Strange that you have got nothing.

Yes but not that rare in LED form, the status lights on my laptop are 473nm :D

It is more likely that the ones who won't ship would have to pay higher postal fees to ship there.

Shouldn't that be 532nm?

Probably trying to make the pot turn further :crackup: Probably drilling the case and got a bit over enthusiastic with the use of force.

The pictures are a bit big since they should be a maximum of 600x800. Still though they are very nice closeups and are better than i could do. Looks like a nice laser to embed in a ultra small build.

Yeah but they are worse for there rated job than any pound store goggles because of there low VLT so for that job i wouldn't feel comfortable using them since they severely reduce vision. They are probably somewhere around OD0.5 if you are lucky. Of course never having actually seen them...

Sounds to me like it is a laser cutter. Things has a thread about his build somewhere which may be useful to you.

The 1W or 1/2W are how much power they are rated to dissipate before failing. if you have cheap LD's the that is far to powerful since that would give 125mA rather than the 10-20mA i believe they need. that would need a 125R resistor or so.

My cat gave me a scare a few days ago as my cheap 405nm was on my bed next to me and she jumped up, landed on the button and nearly hit me in the eye with it :(.

that means that they are rated for low energy impact I.E. flying chips of metal when drilling or soldering. Basically it means they are certified to withstand having a book dropped on them. It has no relation to optical propertied.

The visible range is around 400-700nm. Looking at your numbers you would need a 3.1R resistor. The formula is 1.25/I(A), You may be better off without a capacitor since they can fry the diode. All of my advice about values assumes it is a standard lm317 circuit.

If you do that it probably would be a good idea to use some heatsink compound on the threads since they don't have very good thermal transfer properties.

Actually a CO2 laser would AFAIK be absorbed well by almost anything but unfortunately they are both large and tend to be in the order of tens of watts.

Perhaps swimming goggles with matte black paint over the lenses. Only costs around £3 to make a test set and would, at least as far as I can tell, do the job well enough.

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please It is actually a 445nm, a question was asked about it before HERE. Hope that helps.

Not necessarily, all that you need is access to an LPM on one occasion and then you can use this to calibrate your next one and then use that for all future comparison AFAIK. NOTE: I have never done this but it seems to make sense that way to me assuming that there is no significant drift...