Optical system using polarized light with prevention of effect o

Details Optical system using polarized light with prevention of effect o Optical system using polarized light with prevention of effect o

1994-08-04

1997-07-29

Tran, Thai

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369112, 369 13, 359494, 359499, G11B 700, G02B 530, G02B 2728

Patent

active

056527454

ABSTRACT:
An optical system using polarized light is provided wherein a polarized light beam from an optical source is made to coincide with the natural polarization of the optical element acting upon the light beam. The polarization of the light beam from the optical source is adjusted to be effectively the same as the natural polarization of an optical element with birefringence upon which it is incident, and consequently the birefringence of this element has no effect on the convergence of the beam.

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patent: 4885734 (1989-12-01), Yuzo
patent: 5029154 (1991-07-01), Sumi et al.
patent: 5033828 (1991-07-01), Haruta
English Language Abstract of Japanese Publication, 1,137,435.
English Language Abstract of JP-63-113838.
English Language Abstract of Japanese Publication 02-146517.

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