Viewfinder system for a periscope

Details Viewfinder system for a periscope Viewfinder system for a periscope

1987-11-27

1989-08-22

Henry, Jon W.

350540, 350543, 350500, 350567, G02B 2308, G02B 2764, G02B 2316, G02B 2314

Patent

active

048590452

ABSTRACT:
An improved viewfinder for viewing a landscape along a line of sight, the viewfinder comprising a window periscope comprising a body housing, reflective apparatus mounted on a rotation axis within an end portion of the body housing and being operable to adjust the elevation angle of the line of sight, and optical apparatus fixedly mounted in another end portion of the housing for relaying the line of sight to a viewer in relation to the adjustment; apparatus for supporting the body housing and defining a tilt axis about which the body housing can rotate in a tilting operation; and a transmission apparatus operatively associated with the supporting apparatus and the reflective apparatus for providing the elevation angle adjustment in relation to the tilting operation.

REFERENCES:
patent: 2796815 (1957-06-01), Kaplan et al.
patent: 3262364 (1966-07-01), Kollmorgen
patent: 3694095 (1972-09-01), Louthan
patent: 4210385 (1980-07-01), Baudot
patent: 4284326 (1981-08-01), Durrer et al.

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