Light path switching indicator for optical instruments

Details Light path switching indicator for optical instruments Light path switching indicator for optical instruments

1975-02-21

1976-06-01

Hix, L. T.

350160LC, 354110, 354159, 354210, 354222, G03B 1700

Patent

active

039613488

ABSTRACT:
An indicator comprises a liquid crystal display panel for internally housing patterns to be displayed, and a plurality of switches which are operated in unison with a light path switching mechanism for controlling the operation of the liquid crystal display panel. When an objective path of an optical instrument is connected with either one of a viewfinder path, a photometric path, a photographing path or the like by the action of a light path switching mechanism, the liquid crystal display panel indicates the particular light path with which the objective path is connected.

REFERENCES:
patent: 3011385 (1961-12-01), Frost
patent: 3108526 (1963-10-01), Brackett
patent: 3118014 (1964-01-01), Winkler
patent: 3633482 (1970-01-01), Tsuda

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