Weapon sights

Details Weapon sights Weapon sights

1988-06-07

1989-09-05

Willis, Davis L.

Optics: measuring and testing

Fiducial instruments

Reticle lies outside viewing path

350538, G02B 2312

Patent

active

048632694

ABSTRACT:
A night vision gunsight providing an intensified image of an external scene and an image of an illuminated reticle (13,88) superimposed on the user's (14) direct view of the external scene through the sight. The sight utilizes an eyepiece (39) through which the user (14) views the external scene directly and which also incorporates an internal curved surface (57) possessing both light reflecting and light transmitting properties which serves as a collimating reflector for light rays from an image intensifier (31) viewing the external scene. Light from the illuminated reticle (13,88) may also be collimated and reflected to the user's eye (14) by the curved surface (57) in the eyepiece (39), or alternatively by a similar surface (22) incorporated in an optical element (21,23) in the user's (14) line of sight through the eyepiece (39).

REFERENCES:
patent: 4417814 (1983-11-01), Doliber
patent: 4563061 (1986-01-01), Ellis
patent: 4582400 (1986-04-01), Lough

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