Questions on these lenses.

[AznRice]

660nm/405nm PMMA Collimating Lens/M9 P0.5 Frame 2pcs - eBay (item 260555219850 end time May-19-10 01:13:32 PDT)

Yea they are collaminating and really cheap $5.30 *included shipping*
But are they really meant for 405nm? Even though it says 660 and 405 nm, I see that the lenses are a blue/purple color. Which is mostly used for 660's. Has anyone here purchased them?

 

[chipdouglas]

it all depends on how reputable the source is.. they say "suitable" well a stock aixiz is suitable, but you aren't going to get jayrob g1 status LoL.

do you have access to an LPM? if so do a real review.

michael

 

[daguin]

These look like the lenses that Lasers4U was going to carry. IIRC, they gave a slight improvement for red, but no real difference for violet. The stock AixiZ lens was good enough when compared.

Peace,
dave

 

[HIMNL9]

I have a pair of these lenses ..... they are acrylate lenses like the standard aixiz ones, with an AR coating for red/IR, so, it can improve a (little) bit a red or IR assembly, but cause more loss than a non-coated aixiz one if used for BR, cause the AR coating reflect more blue/violet than a bare acrylate lens.

Just for comparison, one of my PHR modules that shoot 98mW with a bare acrylate and 112 with an aixiz glass for 405nm, measure 91mW with that one .....

 

[LarryDFW]

They are plastic lenses.

The PMMA is an acronym for acrylic.

The blue reflection usually indicates that the AR coating is for Red lasers.

LarryDFW