Objective for video disks

Details Objective for video disks Objective for video disks

1975-07-18

1977-06-14

Corbin, John K.

350175ML, G02B 906

Patent

active

040293980

ABSTRACT:
An objective for video disks of two-component three-lens configuration satisfying the following conditions and having high resolving power and large numerical aperture.

REFERENCES:
patent: 873870 (1907-12-01), Konig
patent: 2781694 (1957-02-01), Takahashi

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