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Watch your butt Milos... The FDA is lurking....:gun: :spank:
Jerry
Jerry
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Increase in output power of Jay's * *405-G-1 lens over standard Aixiz glass lens = 13%
Increase in output power of Larry's 405-G-1 lens over standard Aixiz glass lens = 10.5%
Increase in output of Jay's Meredith glass mod for aixiz lens over standard Aixiz glass = 15.8%
I was very pleased to see even better results than with 405-G-1 lens, although beam diameter is slightly bigger. Still, it is noticeably tighter than standard aixiz glass. I wanted to show this difference on the photo side by side, but results are not as exciting as it looks in real life.
Maybe you could add the Virtualvillage AR coated acrylic for red to the overview (and also the standard Aixiz without opened back; that'd interest me). It should have around 88% transmission for a very good price.
The point is that the power gain from the 405 or meredith lens is mentioned in about every 3rd post on this forum, while I've NEVER seen a gain for opening the back - there was one post giving a good argument that it wouldn't make a significant difference, though. It would be nice to get a FACT here.
The difference in "splash" between any open can (LOC) vs. Closed can (LCC) would be that LOC will have additional softly projected pattern around the dot that directly reflects shape of diode cavity looking from the top. ...
Lets see if i can dig out pic quick
Thanks Jay! Maybe one day you can also do a comparison for the LPC. I guess a lot depends on the beam emission characteristics (beam aperture).I did a comparison with red between AixiZ acrylic (back un-opened) vs AixiZ acrylic (back opened)...
This post, from 4/08, shows a picture of the lenses (un-opened vs opened), and the details of the power comparison:
http://www.laserpointerforums.com/l...d.php?t=20709&highlight=club+jayrob&page=2#30
The difference was quite a lot. Over 11%!:yh:
I just tested a lower powered blu-ray just out of curiosity. A PHR at 121mA's gave 101mW's for AixiZ acrylic (back un-opened), and 106mW's for AixiZ acrylic (back opened). A difference of about 5%. Strange... more of a difference with red, than with blu-ray. Maybe because the lens had to be closer to the blu-ray diode to get focus..