Optical head

Details Optical head Optical head

G - Physics

11

B

352/32.4

G11B 7/12 (2006.01) G11B 7/125 (2006.01) G11B 7/135 (2006.01)

Patent

CA 2014534

An optical head having a beam splitting means disposed in the light path from a collimating lens to a beam-shaping means, whereby the light beam from a semiconductor laser beam source retains its elliptical cross section while it passes through a beam splitting means, and its cross section is not made circular until it arrives at a beam-shaping means, so that the size of the beam splitting means, the converging lens and other optical members can be reduced, which makes the optical head compact and lightweight.

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