Periscope switchover mirror system

Details Periscope switchover mirror system Periscope switchover mirror system

1990-11-07

1992-07-28

Bovernick, Rodney B.

Optical: systems and elements

Compound lens system

Telescope

359402, 359835, G02B 2308, G02B 504

Patent

active

051345196

ABSTRACT:
A switchover mirror system for a periscope has an even number of reflection surfaces for enabling an observer to view a first scene in a first sight direction forward of the observer and an uneven number of reflection surfaces for enabling the observer to view a second scene in a second sight direction rearward of the observer. One of the reflection surfaces is disposed on a member which is pivoted about a pivot axis arranged eccentrically with respect to the member. With a simple construction and a reduced number of movable elements, the image during switchover of the sight direction remains upright and similar fields of view are obtained at the same periscopic elevation as for mirrors which are not switched over.

REFERENCES:
patent: 1635011 (1927-07-01), Sadler
patent: 2167657 (1939-08-01), Karnes
patent: 3409371 (1968-11-01), Strang
patent: 4123151 (1978-10-01), Aurin
patent: 4206991 (1980-06-01), Kobori et al.
patent: 4704000 (1987-11-01), Pekar et al.
patent: 4801197 (1989-01-01), Minami

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