Coherent imaging system and method for producing high...

Details Coherent imaging system and method for producing high... Coherent imaging system and method for producing high...

2011-08-16

2011-08-16

Tarcza, Thomas H (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

C356S003010, C356S003150, C356S004100, C356S005010, C356S005100

Reexamination Certificate

active

07999922

ABSTRACT:
A coherent imaging system for producing high resolution images is provided. A coherent radiation source module produces two radiation beams, each at a different instance. An optical component directs the first radiation beam towards a target at a first angle to produce a first return beam, and also produces a first reference beam. Another optical component directs the second radiation beam towards the target at a second angle to produce a second return beam, and also produces a second reference beam. An aperture collects the first return beam and the second return beam. A detector module produces two coherent images based on interference between the return beams and the reference beams. The detector module also combines the first coherent image and the second coherent image to produce a high resolution coherent image, which has a resolution higher than a resolution of the first coherent image or the second coherent image.

REFERENCES:
patent: 7405834 (2008-07-01), Marron et al.
patent: 2009/0147004 (2009-06-01), Ramon et al.
Marron et al., “Distributed Aperature Active Imaging,” Laser Radar Technology and Applications XII, 2007, 65500A-1 through 65500A-7, vol. 6550, Proc. of SPIE, Orlando, Florida, USA.
Marron et al., “Holographic Laser Radar,” Optic Letters, Mar. 1, 1993, pp. 385-387, vol. 18, No. 5, Optical Society of America, Orlando, Florida, USA.

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