Single optical lense with diffraction limit converging capabilit

Details Single optical lense with diffraction limit converging capabilit Single optical lense with diffraction limit converging capabilit

1987-06-11

1989-06-27

Arnold, Bruce Y.

G02B 1318

Patent

active

048423882

ABSTRACT:
A single lens having first and second aspherical surfaces each having a positive power is usable for, an objective lens of an optical pickup for an optical recording medium. The lens satisfies the following conditions:

REFERENCES:
patent: 3508811 (1970-04-01), Yoshida
patent: 4027952 (1977-06-01), Hugues
patent: 4449792 (1984-05-01), Arai et al.
patent: 4571034 (1986-02-01), Nakamura

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