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Old 06-22-2011, 02:39 PM #1
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Default Best way to correct a 445nm beam

So I will be making a 2 W labby using a 445nm diode and would like to point at, say 100 meters without the dot being extremely big. Sorry but I have no experience with correction optics and generally with lenses etc. Thanks in advance.

P.S also, i apologize if this has been discussed before.


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Old 06-22-2011, 04:00 PM #2
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Default Re: Best way to correct a 445nm beam

I too am curious which is better; cylindrical lens or prisms.
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Old 06-22-2011, 04:02 PM #3
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Default Re: Best way to correct a 445nm beam

These are what I see in photos of nice builds in Photonlexicon.
They seem to be one of the standards for correction.

http://laserpointerforums.com/f55/cylindrical-correction-optics-445-638-a-52925.html
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Old 06-23-2011, 04:40 PM #4
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Default Re: Best way to correct a 445nm beam

prism pairs seem the best way on the hobby level. somebody over on pl sells them. i think andycon does too. also look at wannaburns stuff. he made something similar with prism pairs.
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Old 06-24-2011, 10:53 PM #5
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Default Re: Best way to correct a 445nm beam

prism pair

dave @ lasershowparts sells em

from this



to this


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Old 06-24-2011, 11:00 PM #6
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Default Re: Best way to correct a 445nm beam

I should not have even opened my mouth....

chipdouglas and andy_con are the ones you should listen to!
I bow to their vast experience...
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Old 06-24-2011, 11:05 PM #7
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Default Re: Best way to correct a 445nm beam

cylindrical lens and prism pairs do exactly the same thing.

but prisms are easy to use/setup
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Old 06-24-2011, 11:27 PM #8
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Default Re: Best way to correct a 445nm beam

Quote:
Originally Posted by andy_con View Post
cylindrical lens and prism pairs do exactly the same thing.

but prisms are easy to use/setup
That will be good to know for my c-mount 635nm build that need a few more parts to work.
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Old 06-28-2011, 03:38 PM #9
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Default Re: Best way to correct a 445nm beam

thank you for the compliment 532.... but i actually do not have experience. I only know from reading here and at PL.

Michael.
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Old 06-30-2011, 07:40 PM #10
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Default Re: Best way to correct a 445nm beam

Is the prism pair inside the broken B&W 473kits here Non-Functioning 473 nm Blue Laser, DPSS, BWB-10-OEM - eBay (item 320715493145 end time Jul-17-11 09:22:07 PDT) suitable for 445 diodes? (says coated for 808)

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Old 06-30-2011, 11:19 PM #11
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Default Re: Best way to correct a 445nm beam

They have about 30% loss through them if I remember correctly. Any prisms work but Some have lower losses than others. "Anamorphic" describes the application rather than the optic itself.
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