Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1998-02-18
1999-10-26
Lee, John R.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313537, 348217, 359353, H01J 3150, H01J 4014
Patent
active
059733152
ABSTRACT:
A multi-function day
ight observation, ranging, and sighting device with active acquisition of optical targets 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 pulses 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 pulses reflected from an object in the scene in order to provide both a laser range finding function and an active optical target acquisition mode. The device includes a light-emitting display visible through the eyepiece lens 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.
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Epperson Michael Charles
Porter Jerry Dayton
Saldana Michael R.
Lee John R.
Litton Systems Inc.
Miller Terry L.
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