Safetyscan lens holder, anyone developed one yet?

[White-Light]

Andy loads of people have put forwards suggestions but at the end of the day its you who will be making it.

At the end of the day as I see it its ultimately your decision so discuss with those in the know the various suggestions to find out the best solution in each area, decide on what you're doing, then announce the decided spec and see if there's sufficient interest.

Ultimately then, its your decision on final spec and its up to others if they choose to buy into that. If there's not sufficient interest you can then drop it or if there is, obviously you'll be going with your decided spec and its your way or the highway.

[norty303]

but at the end of the day its you who will be making it

Will it? I know Andy's got a mill and all that, but he's not the only option, particularly if he doesn't like the design or thinks it won't work from an engineering perspective.

This thread was about exploring options, and seeing what was already conceptually developed.

[White-Light]

I was under the impression Andy had taken this on, if not fair enough. Perhaps some further discussion is needed.

Maybe it would help if all the suggestions were listed side by side for each aspect of the design so they could be debated.

At the end of the day, I expect there will be differing priorities from different people eg simplicity vs adjustment precision, value vs quality, appearance vs function, etc etc and its only by discussing all of the options to reach the best design or compromise, that this can go forwards.

[Fish323]

That was a great video from Pangolin. Where whould I buy a lens please?

[Bradfo69]

I would check with JStewart further up in this thread as last I knew, he was listed as a Pangolin dealer and is close to you (I think). He's also a great resource on laser safety.

[Jem]

Either order through James at Laservisuals as Brad has suggested or alternatively directly from Pangolin.

[dsli_jon]

..think everyone's kinda 'overthinking this', a bit.. not knocking the designs, etc, just.. there's plenty of super-adjustable 'off the shelf' / DIY options out there, that with a very slight-bit of machining / mods, can fit the bill well.. (no pun intended..

..For those on 'tighter-budget' -
1x - Dinkum Systems 'Fixed-mount base', $22.50 (retail..) http://www.samys.com/imagesproc/L2lt...==_H_SW700.jpg
+ 1x Dinkum Systems 'Action Pod Top', $8.95, retail - http://www.samys.com/imagesproc/L2lt...==_H_SW700.jpg - whammo - you've got an unbelievably-tough / tight (will *not* slip, once you position..) über-adjustable 'gimbal mount', that with one 1/4-20-tapped (or, pass-thru, w/ nut..) hole in the front of your pj, you've got the 'base'..

..What about the 'lens holder'?

Cheap-o route:
1x DH1 'dual filter holder', http://www.thorlabs.us/images/GuideI...93_DH1_SGL.jpg $14.00 - Needed-mods: a) Remove the 'clips' from the base; b) dremel or bandsaw the 'tab' down, and - a slight 'curve', to match the bottom of the 60mm lens, might be tasty.. c) Drill-out / re-tap the 8/32 hole in the base - carefully - to accomodate the 1/4-20 top-thread from the 'Dinkum top';

- Install yer lens, 'tween the 'clips' / assemble the 'Dinkum' gimbal / screw all-down tight.. Voila - You've just built a super-duper adjustable lens-mounting system for, what.. less than $50., retail?

..If you feel like the 'DH1' is a little 'sketchy', try the 'FH2D' http://www.thorlabs.us/images/xlarge/13272-xl.jpg, $26.00, and the 'mods' are roughly the same - (remove clips / saw-off tops-only of the 'tabs', to allow lens to 'cradle'; clips re-tighten on the base of the lens; lens sits, happily in the center-hip, there.. Only difference is you'll have to either install a threaded-insert, to fit to the 1/4-20 'Dinkum-top', or.. use a nut.. (bah..)

..If ya wanna get 'super-anal' about H-adjustability (..and don't mind spending a few-more bux..) go:

1x Dinkum Systems 'Screw-mount base', $13.50, retail - http://www.samys.com/imagesproc/L2lt...==_H_SW700.jpg
+ 1x Dinkum Systems 'Action Pod Top', $8.95, retail - http://www.samys.com/imagesproc/L2lt...==_H_SW700.jpg - now you've got yer über-adjustable 'gimbal mount-base' - (Note: you'll need to fab-up or find a small 'L-bracket' to give you the 90˚ from this base, to the rail / carrier, below - but, any 3/4" - 1", max piece of decent-thickness alum-L, drilled for 1/4-20 pass-thru, should be a snap..)

1x 'Dove-rail' .. http://www.thorlabs.us/images/xlarge/783-xl.jpg - $27.00..
1x 'Carrier', for the rail.. http://www.thorlabs.us/images/GuideI...33_RC1_SGL.jpg - $23.00... (this is what you will make / find the 'mini-L', for, to attach the 'Dinkum-base' to this carrier, so that 'gimbal-mount' assy. will be at a 90˚, parallel to the pj-face / aperture-window..)

..and your-choice of 'lens-holder', DH1 or FH2D.. Now, you've got *ultimate* adjustability, more than likely you'd ever need, for about $100. - retail..

Sure, relative to the 'lens-holder', it would be great if we had something like these - http://www.thorlabs.us/images/xlarge/7489-xl.jpg, or even these, http://www.thorlabs.us/images/xlarge/6588-xl.jpg, but no one makes them for a 60mm-lens.. it's either 50mm, in the case of the 'pellicle-mount', or 50, then 75mm, for the 'full-ring' - nothing 'tween...

Perhaps, someone here might start making one like the 'fork-style', http://www.thorlabs.us/images/xlarge/7489-xl.jpg, but for the 60mm, specifically... Likely those, with an 'engineered quick-change clip', for the lens, would be better, but... dey dont exist, atm..

Cinco centavos...
j

[White-Light]

Sure, relative to the 'lens-holder', it would be great if we had something like these - http://www.thorlabs.us/images/xlarge/7489-xl.jpg, or even these, http://www.thorlabs.us/images/xlarge/6588-xl.jpg, but no one makes them for a 60mm-lens.. it's either 50mm, in the case of the 'pellicle-mount', or 50, then 75mm, for the 'full-ring' - nothing 'tween...

Maybe it would be possible to fit a soft but heat resistant plastic liner into the 75mm ring to take a 60mm lens? - lens protection and size adjustment in one?

[Fish323]

There are lots of things like this available in different sizes. Would they work?

[White-Light]

Bottom line is, you can't escape the calculations.

There is no magic solution you can just drop in front of a laser to make it safe.

To know which lens you need in any particular situation, you need to be able to calculate the MPE. Pangolin do give some rough guidelines with the lenses, but they're exactly that, rough guidelines, its not safe to take them as the basis for safety.

...and to answer your question, yes they do work if you choose the right lens for the job and combine it with BAM's and other tools to get the power density to the correct level.