Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1997-07-28
1999-05-25
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250214R, 313103R, H01J 4014
Patent
active
059071508
ABSTRACT:
A multi-function day
ight observation, ranging, and sighting device includes a single objective lens and a single eyepiece lens and provides an image of a scene. The single objective lens leads to a visible-light first optical path and to an invisible-light second optical path. The invisible-light second optical path includes an image intensifier tube providing a visible image. The first-and second optical paths converge with visible images provided by each pathway being overlaid at a reticule plane. A single light path leads from the reticule plane to the eyepiece lens. A laser provides a pulse of laser light projected into the scene via the single objective lens, and the image intensifier tube is used as a detector for a portion of the laser light pulse reflected from an object in the scene in order to provide a laser range finding function. The device includes a light-emitting display visible through the eyepiece lens and providing ranging information superimposed over the image of the scene as seen by a user of the device. Methods of the device's operation are also disclosed.
REFERENCES:
patent: 5035472 (1991-07-01), Hansen
patent: 5084780 (1992-01-01), Phillips
patent: 5146077 (1992-09-01), Caserta et al.
patent: 5218194 (1993-06-01), Garbi et al.
patent: 5747792 (1998-05-01), Kintz et al.
Le Que T.
Miller Terry L.
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