Objective system for video disc

Details Objective system for video disc Objective system for video disc

1982-03-17

1983-06-21

Corbin, John K.

350414, G02B 912, G02B 2102

Patent

active

043891004

ABSTRACT:
An objective system consists of three lens components, the first lens component including a positive meniscus lens convex to the light source, the second lens component including a positive meniscus lens convex to the light source, and the third lens component including a positive meniscus lens concave to the light source. The objective system for a video disc satisfying the following conditions:

REFERENCES:
patent: 4258981 (1981-03-01), Goto
patent: 4270843 (1981-06-01), Goto

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