you might take a look at this:
http://www.photonlexicon.com/forums/...ight=swami+445
i'm working on a prototype for combining 445's for use in graphic projectors. it's kind of lossy, but the beam quality is excellent. about .6mrad with a 4mmx4mm beam at aperture.
Originally Posted by
Solarfire
Many people here have spent a lot of time, including me, finding the ultimate lensing combination for collimating the 445nm diode and the summed up results would be:
1.) Single lens solution with a longer FL (=8mm) would be the O-Like lens giving a divergence <2mrad with a loss of about 7%, large aperture beam size of ~ 4.5mm x 1mm
2.) O-Like lens (long FL 8mm) with prism correction giving a divergence of <0.7mrad with a total loss of 16.8%, aperture beam size of ~ 4.5mm x 4.5mm.
3.) 405-G-2 lens (short FL 4mm) with cylinder correction giving a divergence <0.7mrad with a total loss of 15%, aperture beam size of ~ 3.5mm x 3.5mm.
Here some further info’s with Pictures http://www.photonlexicon.com/forums/...ion-correction
cheers!
suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.