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For what this is for it's unfortunately outside of my budget, I just wanted a set of basic colors that is low enough power that I can relatively safely show someone else interesting laser properties without a second set of goggles. After A quick look the cheapest I saw was I think 50 USD, after...

Have you measured these? Their design is the same as all the other cheap laser pointers that come out of china, they all say <5mW due to regulations, but virtually none of them are, they are usually many many times more powerful.

Thank you, this company seems ideal, I will have a look through the options.

Thank you. I should have mentioned that I am in Europe, not that shipping will be a deal breaker, but it will easily double the price and more after import and shipping and VAT is paid. Optotronics looks good, unfortunately the 5mW option are listed as not in stock at the moment. Z bolt is...

I would like to get a couple low power lasers to use for demonstrations, but it's a thing that is impossible to search for because all the lasers are labelled <5mW regardless of actual power. Does anyone here know of anywhere to source such a laser, ideally not too expensive, I'm really just...

I keep meaning to make a nice box for the lasers I have but it's one of those things I just never get around to. But for now I just store then in a plastic container, the ones that take batteries a bit more beefy than AA or AAA I keep our of the lasers in a separate smaller container, for the...

The type of damage that can happen depends on the type of light and the exposure. Visible light goes through the eye with negligible absorption, which makes sense since you need it to get to the retina to see it, The spots on the retina that get hit with the laser beam can get burned and get...

I check in once in a while, but never stay long, all the popup ads with disguised / fake X buttons and redirects really makes me wonder why I bothered to visit the website. Here's a screenshot of an ad inserted into the middle of someone's post, in a quote... Twice. Sorry if the image is...

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There are different kinds of safety equipment, something like a filter mask is something you wear because if you don't you will get harmed. Something like a hardhat is a thing you wear even though most of the time nothing is falling on you, but when something does it saves your noggin. Laser...

Electricity will not flow unless you've got a complete circuit, using a metal case as a conductor isn't uncommon in low power electronics. In your diagram if you follow the top connection from the LED you can see that it is directly connected to one of the battery poles, the other side of the...

You can get those hollow rubber balls with tips on them meant for blowing dust of camera lenses, they shouldn't damage the coating, I wouldn't clean them with any solvents, compressed cans of air included because of the volatile chemicals they use to drive the gas, there are lots of optical...

That is ridiculously cool. I want one. Ain't no way I could justify spending the money it would cost though.

I don't see a poll, I think you may have forrgot it :p

If a pair of glasses has multiple ranges, it will either have a specific rating for each range or if it only has one it will be a minimum across the entirety of both ranges, so if the glasses just say OD4 then that is the minimum level of protection they provide. They may still have higher...

If the framerate is noticably choppy that's all I was looking for :) I'll hold off for now until I can free up the one I have.

Yea but you're not a kid. My first laser was also a tiny little thing that was bought at a faire/market thing, I don't know how old I was at the time but I do know that for some bizare reason at the time it seemed like a good idea to find out if I could look directly into it, luckily it was a...

No, they don't exist. if you lowered the intensity of all wavelengths of light that would be like wearing glasses that are very very nearly solid black, you would have almost 0 visible light make it through and you would effectively be blind. You can however get 2 pairs that between them will...

I found his videos a while ago, and I've been wanting to build one since, but my raspberry pi is currently in use for adifferent project so I put it on the backburner. I hadn't considered getting one of the pi zero boards, I was worried it would struggle with camera framerate, as I plan to use...

In theory maybe, but that kind of VR technology is veeery expensive for use as safety equipment when the glasses are an option, and you'll be at the mercy of battery life and you'll have a significant amount of weight hanging off the front of your face. I'm sure they have very impressive latency...