Yaujen J Wang

7339741, Mar 4, 2008

Nov 14, 2006

11/599536

Yaujen Wang - Arcadia CA, US
Gilbert Y. Chan - Yorba Linda CA, US

Northrop Grumman Systems Corporation - Los Angeles CA

G92B 27/14
G02B 13/14
G08B 13/14

359629, 359356, 25033901

Systems and methods for providing a wide angle multi-color infrared (IR) optical system are disclosed. In one embodiment, a system is provided that comprises a negative lens configured to receive an incoming light beam scene over a wide FOV and a beam splitter configured to receive incoming light beam associated with the incoming light beam scene from the negative lens and to provide light beams of a first color to a first channel and to provide light beams of a second color to a second channel. The system further comprises a first positive lens assembly arranged to focus light beams of the first color received from the beam splitter on a first image detector, and a second positive lens assembly arranged to focus light beams of the second color received from the beam splitter on a second image detector.

7554076, Jun 30, 2009

Jun 21, 2006

11/471926

Yaujen Wang - Arcadia CA, US
Brendan J. D. Irwin - Glendora CA, US
Raj K. Shori - Burbank CA, US

Northrop Grumman Corporation - Los Angeles CA

G01S 7/486

250221, 250551, 244 315, 244 316

An optical sensor system and method includes a plurality of optical transceiver modules arranged across the surface of the optical sensor in a predetermined pattern. A given optical transceiver module includes an optical transmitter that produces at least one light beam and an optical receiver that detects reflected light from the at least one light beam. The optical transceiver module further includes housing for housing the optical transmitter and the optical receiver.

7616378, Nov 10, 2009

May 17, 2005

11/130608

Yaujen Wang - Arcadia CA, US

Northrop Grumman Corporation - Los Angeles CA

G02B 27/10
G02B 27/14

359618, 359631, 359637

Dichroic beam splitters having non-parallel entry and exit surfaces, reduced distance between such surfaces, and an aspherical exit surface can be advantageously used in dual channel optical systems, particularly when one channel is dedicated to infrared light and the other channel is dedicated to visible or near-infrared light.

53791576, Jan 3, 1995

Dec 2, 1993

8/168786

Yaujen Wang - Arcadia CA

Hughes Aircraft Company - Los Angeles CA

G02B 508

359861

A wide-angle optical imaging system (10) employs three mirrors (20, 22, 24) to reflect and propagate beams of electromagnetic energy (16, 17, 18) from four reflecting surfaces. A convex mirror (20) is the primary mirror/reflector. A concave mirror (22) is both the secondary and quaternary mirror/reflector for the system. A folding mirror (24) which is essentially flat mirror is the tertiary mirror/reflector for the system. The optical axis (36) of the system (10) is normal to the center of the folding mirror (24). The vertex of the convex mirror (20) and the vertex of the concave mirror (22) lie along the optical axis (36). A distortion corrector (32) and filter (34) are positioned in front of the image plane (30) of the system (10).

20150098002, Apr 9, 2015

Dec 5, 2013

14/098231

YAUJEN WANG - ARCADIA CA, US

NORTHROP GRUMMAN SYSTEMS CORPORATION - FALLS CHURCH VA

G02B 13/18
H04N 5/225
G02B 13/00
H04N 5/232

34833311, 359716, 29428

Systems and methods are provided for optical systems and methods. A compact optical system can include a fore optical assembly, an aft optical assembly, and a phase corrector plate located between the fore optical assembly and the aft optical assembly. The phase corrector plate can have a substantially flat first surface and a set of high order aspherical coefficients on the second surface. In one aspect, the fore optical assembly and the aft optical assembly comprise achromatic doublets, apochromatic triplets, or a combination of elements. In another aspect, a surface of the phase corrector plate is located near or at an optical stop.