Binocular construction having adjustable filters

Details Binocular construction having adjustable filters Binocular construction having adjustable filters

1984-10-22

1986-07-22

Henry, Jon W.

350545, 350315, 350317, G02B 520, G02B 530, G02B 2300

Patent

active

046015523

ABSTRACT:
A binocular construction having a pair of parallel barrels within each of which is a rotary frame supporting a number of different filters. The frames are coupled together for conjoint rotation so as to enable selected ones of the filters to intercept light traversing the barrels.

REFERENCES:
patent: 409927 (1889-08-01), Clements
patent: 2435074 (1948-01-01), Fry
patent: 3479512 (1969-11-01), Weissenberg
patent: 3528724 (1970-09-01), Bertin

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