Optics: measuring and testing – By polarized light examination
Reexamination Certificate
2008-03-25
2008-03-25
Punnoose, Roy M (Department: 2886)
Optics: measuring and testing
By polarized light examination
Reexamination Certificate
active
11821476
ABSTRACT:
A method of determining polarization profiles of points in a scene from video frames using Stokes parameters. The method includes emitting scene light rays from points in a region in a scene, and emitting a correlator light ray from a correlator. The correlator includes a uniform light source, a second linear polarizer, and a fixed retarder. The method further includes substantially simultaneously transmitting the scene light rays and the correlator light ray through a color filter and a Stokes filter that includes a rotating retarder having angular positions Ω, and a first linear polarizer having a transmission axis to a video camera having a video frame, projecting onto respective pixels in the video frame and recording as two-dimensional (2-D) arrays images corresponding to the scene light rays and the correlator light ray, and downloading the images into the computer system and storing the images into a memory in the computer system.
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patent: 6552836 (2003-04-01), Miller
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Gerhart Grant R.
Matchko Roy M.
Acosta Luis Miguel
Kuhn David L.
Punnoose Roy M
Saur Thomas W.
The United States of America as represented by the Secretary of
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