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Osram PL530 - Tiny 530nm OPSL

paul1598419

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Chris, by expander lens do you mean a collimator lens that is further away giving the divergence of a BE? I see you got more of these OPSL laser modules.
 

Alaskan

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Yep, those six have a tiny expander lens assembly glued to the output. Since the divergence of these modules without an expander lens is 4 to 8 mRad, the distance needed between a collimation lens to allow the beam to expand enough to lower the divergence to an acceptable or low enough amount is too far, I’d rather suffer the loss of adding one more lens than have an uber long pointer. Even if only 5 mm beam diameter, without a expander lens, its just too far way for my likes for the placement of the collimation lens.
 

paul1598419

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Very nicely done. I wasn't planning on watching your entire video, but it was so instructive I couldn't help myself. Thanks.
 




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