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ArcticMyst Security by Avery

WTB: Large Diameter Negative FL Lens; 40mm/1.5 inch and up.

Joined
Jan 29, 2014
Messages
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Looking for a large diameter negative focal length expander lens. The diameter can be 1.6 inches/40mm or larger, but must have a short -FL of 30mm or smaller, shorter is better.

This is for a second stage beam expander coupled with a 6" diameter 40" +FL PCX lens.

I also have a 12" diameter PCX lens with a 24" FL I'd like to use for a beam expander but have not found the right negative lens for it yet.

Will consider any large negative focal length lens up to 3 inch diameter for use at 532nm. I intend on using a 10 to 20X expander first and need something with a large enough diameter to accept its 20-40mm diameter beam.
 




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