One-piece f.THETA.-DEC scanning lens

Details One-piece f.THETA.-DEC scanning lens One-piece f.THETA.-DEC scanning lens

1993-06-02

1994-07-12

Sugarman, Scott J.

Optical: systems and elements

Lens

High distortion lens

359206, G02B 2608

Patent

active

053293991

ABSTRACT:
Both of the first surface and the second surface of the one-piece f.THETA.-DEC scanning lens of the present invention have to be in accordance with the following equation: ##EQU1## and the following criterion has to be satisfied: (1) 0.27.ltoreq.fx/fy.ltoreq.0.35

REFERENCES:
patent: 3750189 (1973-07-01), Fleischer
patent: 4571035 (1986-02-01), Sakuma
patent: 5196957 (1993-03-01), Brueggemann
patent: 5277383 (1993-09-01), Brueggemann

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