Old 07-01-2008, 06:41 PM #1
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Default Why not...

.. Use the focusing lens that comes with the diodes on the drives that we extract them from, expecially the Blu-ray drives. Maybe these lenses are AR coated, possibly even glass? Just wondering if anyone has tried them yet, as Blu-ray's dont have a great selection for lenses...


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Old 07-01-2008, 06:51 PM #2
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Default Re: Why not...

I've tried it, it doesn't work, and they're plastic.
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Old 07-01-2008, 09:14 PM #3
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Default Re: Why not...

Oh - they WORK...that isn't the problem....the problem is, the focal length is so infinitesimally small that for all accounts and purposes, they are worthless for anything other than DVD burning
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Old 07-01-2008, 10:23 PM #4
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Default Re: Why not...

most of those are plastic moulded lenses. The 6x writer focusing lens is actually made of glass, AR coated and probably aspheric. One of the surfaces is almost 1/2 a sphere, which results in an impracticably small focal length /but also low aberrations for diffraction-limited focusing/.
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Old 07-02-2008, 12:45 PM #5
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Default Re: Why not...

the other optics are kinda neat. the burner i just took apart for an open can diode contained a tiny beam splitter cube, a bunch of glass mittors and windows, and a few filters..

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