Re: F.S. Mini 'Pocket Pal' Blu-ray Lasers! - 90mW'
IgorT said:
[quote author=jayrob link=1212910842/12#23 date=1213402245]We are all dreaming that IgorT's special 405nm coated glass lenses will perform like the Meredith glass lens!
That way, we can fit them into the AixiZ nuts...
Yeah, that would be great...
I was thinking about something Jay.. Is there any way, that the AixiZ acrylic lens would be gathering less light in the Meredith module, than in an AixiZ module? Is any of the effective diameter obstructed somehow, when the AixiZ lens is in the Meredith acrylic holder?
This is an important question... Because i have excluded pretty much all the other possibilities. If the AixiZ lens collects the same amount of light in the Meredith module as in the AixiZ module, then the power difference with a Meredith really is 30% just because of the material![/quote]
Well, I can tell you that I have removed an AixiZ acrylic lens from the black plastic nut, and put it into a Meredith module. Which gave much better readings that the 'coated' Meredith acrylic lens did. (with a blu-ray) But I have not actually (using the exact same diode), compared an AixiZ acrylic, against an AixiZ acrylic in a Meredith module.
I have a couple of pictures of the Meredith acrylic for you, as well as the Meredith glass module:
I would guess, that the 5.1mm opening at the bottom of the Meredith module, would dictate the difference, if any. It is reasonable that after cutting the black plastic away from the AixiZ nut, that there may be just a little more area for light to come through...
As far as the Meredith glass lens, you can see from these pictures why it is giving more power. Because of the 'short focus' design of the lens, it has to sit at the bottom of the brass holder, which positions it very close to the top of the LD!
Jay
P.S. You just gave me a great idea though! I think I will compare my readings on a blu-ray with an AixiZ acrylic in a Meredith module, and then drill out the 5.1mm opening at the bottom to a larger opening! (since the acrylic lens sits at the top, I can drill this opening out)
That should be interesting!