Dietmar H Hanke

US Patent:

56004915, Feb 4, 1997

Filed:

Apr 28, 1995

Appl. No.:

8/430791

Inventors:

David A. Hull - Manhattan Beach CA
Richard R. Smith - Los Angeles CA
Mark R. Ehlers - Gardena CA
Michael J. Brothers - Torrance CA
Kenneth W. Lee - Whittier CA
Dietmar Hanke - Mission Viejo CA

Assignee:

Hughes Electronics - Los Angeles CA

International Classification:

G02B 1514

US Classification:

359698

Abstract:

A thermal imaging system (100) for a vehicle includes an objective lens (104) for receiving an image of the object, an eyepiece lens (102) for viewing the image of the object, and a compensator lens (106) movably located between the objective and eyepiece lenses (104, 102) for providing a thermal image of the object. The system (100) includes a servo motor control system (107, 109, 110, 112 and 114) for controlling the position of the compensator lens (106) based upon temperature, range and field of view to provide an accurate thermal image of the object.

US Patent:

60123761, Jan 11, 2000

Filed:

Apr 28, 1995

Appl. No.:

8/431251

Inventors:

Dietmar H. Hanke - Mission Viejo CA
David A. Hull - Manhattan Beach CA
Richard R. Smith - Los Angeles CA

Assignee:

Raytheon Company - Lexington MA

International Classification:

F41G 308

US Classification:

89 4119

Abstract:

An optical gun sight system for an M1A2 Abrams Main Battle Tank supported in a lower housing which may be attached to the fixed internal upper housing in the turret of the tank. An adapter plate is provided which has two sets of openings, one to align with the openings in the upper housing and the other to align with openings in the lower housing. An alignment mechanism allows for fine adjustment of the lower housing relative to the upper housing. Operating buttons, knobs and filter wheel are conveniently located on or beneath the front face of the lower housing. A thermal imaging system includes an objective lens for receiving an image of a target object, an eyepiece lens for viewing the image of the object, and a compensator lens movably located between the objective and eyepiece lenses for providing a thermal image of the object. The system includes a servo motor control system for controlling the position of the compensator lens based upon temperature, range and field of view to provide an accurate thermal image of the object.

US Patent:

54442508, Aug 22, 1995

Filed:

Aug 15, 1994

Appl. No.:

8/290314

Inventors:

Dietmar Hanke - Mission Viejo CA

Assignee:

Hughes Aircraft Company - Los Angeles CA

International Classification:

G01J 508

US Classification:

250352

Abstract:

An infrared imaging system (10) has a detector assembly (12) positioned for viewing infrared radiation from a subject (20), and a housing (18) enclosing the detector assembly for maintaining the detector assembly at a temperature lower than a temperature of an environment outside the housing, the housing having a window (42) for transmission of radiation from the subject to the detector assembly. A cold stop (46) is located within the housing and a warm stop (48) is located outside the housing for transmitting radiation via their respective apertures (50, 52) from the subject to the detector assembly. The warm stop has a planar retroreflective surface (62) for reflecting rays from the detector assembly back to the detector assembly, thereby to minimize thermal noise. The retroreflective surface is profiled with grooves (66) arranged in a configuration for directing the rays of radiation back to the detector assembly, the configuration of grooves being a Fresnel configuration (62) or a kinoform configuration (62A) or a binary configuration (62B). Any desired location of the warm stop may be employed, even within a lens assembly (26), and any desired configuration of the shape of the aperture may be employed such as a rectangular or square shaped aperture.