Night vision viewing systems

Details Night vision viewing systems Night vision viewing systems

1987-09-15

1989-05-09

Corbin, John K.

350145, G02B 2300, G02B 2702

Patent

active

048283789

ABSTRACT:
A night vision viewing system, suitable for mounting on an observer's headgear (11), wherein light rays from a forward scene pass to the observer's eye (E) via a path comprising a forward looking objective lens (23), an inclined reflector (35) which directs the rays passing through the objective onto an outwardly sideways looking input face of an image intensifier (31), and a fibre optic stub (33) which directs rays from the output face of the intensifier onto a second reflector (27) which directs the rays downwardly into an eyepiece (21) which is in the observer's forward line of sight. The eyepiece incorporates an internal surface (37) having both light reflective and light transmissive properties which directs rays entering the eyepiece from the intensifier to the observer's eye. The fibre optic stub serves to effect rotation of the intensified image to present an intensified image of correct orientation to the observer.

REFERENCES:
patent: 3549231 (1970-12-01), Scidmore et al.
patent: 3923370 (1975-12-01), Mostrom
patent: 4000419 (1976-12-01), Crost et al.
patent: 4124798 (1978-11-01), Thompson
patent: 4361384 (1982-11-01), Bosserman
patent: 4653879 (1987-03-01), Filipovich
"Optical Engineering", Nov./Dec. 1974, pp. 6233-6234.

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