Diopter-adjusting device for use in finder-interchangeable type

Details Diopter-adjusting device for use in finder-interchangeable type Diopter-adjusting device for use in finder-interchangeable type

1978-06-02

1979-08-14

Hartary, Joseph W.

354155, 350255, G03B 1306

Patent

active

041643690

ABSTRACT:
The eyepiece in an interchangeable finder is made axially adjustable by mounting it in a holder which, in turn, is slidably mounted within the finder. In the preferred embodiment, sliding movement of the eyepiece holder is accomplished through a rack and pinion.

REFERENCES:
patent: 1267596 (1918-05-01), Schleinzer
patent: 2584912 (1952-02-01), Palmer
patent: 3250176 (1966-05-01), Dowling et al.
patent: 3630133 (1971-12-01), Shimomura
patent: 3967299 (1976-06-01), Shono

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