Recent content by fixitiwill

You get to the main point of my post with the following statement nsptxxfh: I don't think too many people dispute the fact that direct laser exposure can cause damage. It is the diffuse and specular reflections that are a bit more subtle.

Ryanrenesis: The damage done to my vision was done when I was looking at the spot that my lasers make. I figured that since the spots in my vision disappeared after a while (like the spots you get after looking at the sun) that they were just a temporary issue. I was wrong, but it wasn't...

Lol, I don't think anybody is disputing the fact that blue is less effective. The point that is under contention here is the reason for the reduced effectiveness. We are assuming the geese are less sensitive to this wavelength, but the truth is we don't know. The reduced effectiveness could...

I hear that! :beer:

Hey Shorty, while I do really believe what you are saying is correct, I have to make the distinction that it is also just conjecture. Show me the references and I will call it evidence. I am a big fan of the scientific method. Theory is not fact, though that does not make theory useless. I...

Hey Blade, I realize your question is in all likely hood not aimed at me, but just in case it is here is my answer: Yes+

Lol, it's called having a healthy respect!

To put this difficult to simplify subject as simply as I can: 1) If it leaves spots in your vision, don't look at it. 2) If you catch a direct or specular reflection, of anything over a few mW regardless of wavelength in the dark - you probably did damage. 3) It is unlikely you will be able...

Yeah, but I doubt it is man portable. Edit: After further review, I have decided that your intentions can't be all that bad. After all, Pink Floyd is your religion.

Yes I do, more than ever. I'm nowhere near totally blind. My love for them has grown, but changed a bit. I'm no longer very interested in portable lasers or burning things. My photonic interests are now geared towards making the hobby into a self sustaining business (not including only...

I suppose it is kind of interesting in a morbid sort of way. My signature is the result of many years of research, experimentation, and idiocy ultimately leading to that very simple but undeniable conclusion. (though I'd like to think of it more as self sacrifice in the name of science...

See this thread to understand a bit more about how lasers blind you. My question to you is why do you want to know what it takes to cause complete blindness? Isn't partial blindness bad enough? Me thinks you may have bad intentions here. (my opinion)

While I know of no evidence to support the idea that geese have a similar spectrum sensitivity profile as ours, I do believe that they are less sensitive to blue. Another reason could be that they are just not as afraid of blue. After dark tests are quite a bit more effective, but much harder...

I'm not trying to reopen this thread, but I have some new information that might prove useful to anyone interested in the subject. After a bit of recent 'field research' I have determined that 445nm blue lasers are a lot less effective than either green or red for a given wattage. While blue...

Yes, I agree magmabeam. Here is a question with no easy answer... How long must one stare at the dot for it to equal a direct hit to the eye as far as the amount of damage done? I realize that there are a LOT of factors that would have to be known in order to make a decent approximation, so...