Optical pickup, aberration correction unit and astigmatism measu

Details Optical pickup, aberration correction unit and astigmatism measu Optical pickup, aberration correction unit and astigmatism measu

1999-03-11

2000-11-21

Ben, Loha

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359 9, 359237, 359295, 359319, 359637, 349 57, 349200, 369 4438, 369112, G02F 101

Patent

active

061511544

ABSTRACT:
An optical pickup includes: a light source, an object lens, and an aberration correction unit for correcting aberration by giving a phase difference to a light beam. The aberration correction unit corrects astigmatism caused by an optical system of the optical pickup.

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patent: 5751471 (1998-05-01), Chen et al.
patent: 5815233 (1998-09-01), Morokawa et al.
patent: 5907427 (1999-05-01), Scalora et al.
patent: 5914802 (1999-06-01), Stappaerts et al.
patent: 5973817 (1999-10-01), Robinson et al.
patent: 5995685 (1999-11-01), Seino

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