World's First 3 Generation-Compatible HD DVD Drive

Archived from groups: rec.video.desktop (More info?)

This is cool? When will we get the world's first HDVD Burner?
(Afforadable)

Realization of three-wavelength-compatible optical head.
- This compatible head technology was developed by using three lasers,
the blue, red and infrared laser diodes ("LD" ), as the light source,
thus enabling optimal reading of each disc through the optical head
using a single objective lens.
- Correction of the difference in substrate thickness and wavelength,
which causes spherical aberration, was corrected by changing the
magnification of the objective lens. Control of the numerical aperture
of the objective lens corresponding to each disc format is enabled by
an aperture control element that features wavelength selectivity, which
realizes stable reading.

http://www.physorg.com/news2440.html


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astro
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