Laser projector power selection

[drm916]

Legal audience scanning in the USA will probably never happen....

Audience scanning is legal if you have the proper variance. Two people in the USA have their audience scanning variances. There is also a company in Las Vegas that offers to do a custom install that includes audience scanning variances. See the link below.

With that said.. I will probably never have one. I would like to see the new approach adopted that allows up to 100mw/cm2 that has been proposed by Greg Makhov. I think the new approach makes a lot of sense.

I am a newbie to lasering so I have a lot to learn about overhead beam shows first.


http://www.xtremescan.net/

[dsli_jon]

There is also a company in Las Vegas that offers to do a custom install that includes audience scanning variances....

..yeah, though I heard direct from a Client I found out we were co-pitching they want like $65K Best advice for a US-approved audience-scanning rig you can simply and easily 'plug and play-amend' to your existing show-var (or, add right off the bat..) is go direct to Sir Greg / LSDI... that unit is really his 'baby', anyway...
Well, perhaps it's more accurate to say that Bill B. / Pango also had significant design-contributions to-it (ie: PASS, etc..), buuut to say '..it is really Bill and Greg's baby..' sounds a little, uh, wierd...

mis dos fichas.. ;P
j

[Phredy1]

I knew PASS was being worked on for audience scanning, but it's news to me that it's varianced and legal in the USA now. To convince me 100% I'd have to see the paperwork.

[dsli_jon]

Hey Sir G -

I knew PASS was being worked on...

Well, out of respect for the Op, here I don't wanna take this 'too far off the rails', but, suffice to say that, iirc, PASS has approval within a very-narrow 'band' - THAT system is FDA approved, with PASS - that is not to-say, you can just up and buy PASS, plug it into your favorite 'Love You Long Time Lazer Boxx' and you're off and legally audience scanning, Bzzt...

iirc, you'd have to work with Pango, direct, on demoing how all the other features of your system were compliant, and could integrate with PASS, properly - THEN, submit your design to FDA, and, if your box got-approved, then they'd sell it to you for sys-integration...

...Again, IIRC, which is prolly rustier than the Detroit River... I should dredge thru my emails with Bill, from a couple years-back, where I had asked all these very-same questions... that (my 'just go to Greg = Done...recommendation' in the other post...) was Bills conclusion, and I had to agree, after we discussed all the pros / cons / costs, etc of 'DIYing' it...

Hope this helps... Now back to the drm916-channel...
j

[drm916]

Hey Sir G -

Hope this helps... Now back to the drm916-channel...
j

No need to go back to the drm916 channel on my behalf. I already made my decision on power for my projector(s).

The audience scanning topic is very interesting to me. Please feel free to continue it in this thread if you would like to. I want all the information I can get on anything related to laser shows and safety. I have spent the last 6 months of my life reading just about everything I can get my hands on. The more information the better!

[dsli_jon]

I have spent the last 6 months of my life reading just about everything I can get my hands on. The more information the better!

Well, here's to You for such a mega-awesome attitude!

...it's very good for 'newbies' to see-this sort of attitude, here in PL... lately, seems like the 'snr' has been a bit left of the dial, so... Glad to have ya 'round...

Have u checked-out the PL Wiki? (..up top...) it's a start, hope to, one-day, have it be a 'real resource' for builders, etc (ie: what's a PBS cube? when to use / how; dichro-selection; PSU-considerations; How to tune galvos, etc, etc... Feel-free to ask questions, anytime, Mang...

peace...
j

[Phredy1]

@dlsi_jon: I checked with a reliable source and you are correct. PASS is varianced, but a royal pain in the ass to use and expensive.

[drm916]

Well, here's to You for such a mega-awesome attitude!

...it's very good for 'newbies' to see-this sort of attitude, here in PL... lately, seems like the 'snr' has been a bit left of the dial, so... Glad to have ya 'round...

Have u checked-out the PL Wiki? (..up top...) it's a start, hope to, one-day, have it be a 'real resource' for builders, etc (ie: what's a PBS cube? when to use / how; dichro-selection; PSU-considerations; How to tune galvos, etc, etc... Feel-free to ask questions, anytime, Mang...

peace...
j

Thanks. And I have def read the Wiki. It was one of the first things I read. Most of it I understand but as I get more and more into actually using the projectors/software, there will undoubtably have questions.

I also researched the price of PASS. Looks like its about 1200 - 1500 depending on where you buy it But my understanding is that it has some limitations on the power(s) it can safely modulate.

Phredy1 - What do you mean by a pain in the ass to use? I am guessing it has to be "setup" to the projector. But does it need to be tuned for each and every show? Or is it a one time configuration per projector and your done?

[Phredy1]

Phredy1 - What do you mean by a pain in the ass to use? I am guessing it has to be "setup" to the projector. But does it need to be tuned for each and every show? Or is it a one time configuration per projector and your done?

From what I understand, when using PASS for audience scanning in the USA you have to take multiple power readings each time you use it and the power meter readings need to be logged. Someone with more knowledge about PASS might be able to give more details.

I didn't know you could buy the PASS system from Pangolin and add it to your existing system and then re-variance the projector. I thought it had to come from a very select few retailers who sell the projector with PASS installed....?

Ya, audience scanning is a very cool effect, but even if a person could buy PASS and add it, still sounds like a pain to use to me.

[drm916]

From what I understand, when using PASS for audience scanning in the USA you have to take multiple power readings each time you use it and the power meter readings need to be logged. Someone with more knowledge about PASS might be able to give more details.

I didn't know you could buy the PASS system from Pangolin and add it to your existing system and then re-variance the projector. I thought it had to come from a very select few retailers who sell the projector with PASS installed....?

Ya, audience scanning is a very cool effect, but even if a person could buy PASS and add it, still sounds like a pain to use to me.

According to the pangolin website it can be installed in any projector. They do mention that some vendors offer projectors with it already built in too. Even if not doing audience scanning it would be nice to have in the projector just for that extra safety. But I still havent gotten details on how it really works. If I ever get more details I will report back to the forum.

http://www.pangolin.com/PASS/index.htm