Simultaneous 4-stokes parameter determination using a single...

Details Simultaneous 4-stokes parameter determination using a single... Simultaneous 4-stokes parameter determination using a single...

2007-06-12

2007-06-12

Nguyen, Tu T. (Department: 2886)

Optics: measuring and testing

By polarized light examination

Reexamination Certificate

active

11527655

ABSTRACT:
A method for determining and displaying polarization profiles of points in a scene from a single imaging detector array, which utilizes a filter system comprised of a retarder, four linear polarizers, four lenses, a color filter, camera lens and CCD video camera. Light from points in a scene are transmitted through the system and exits with attenuated intensities unique for each wavelength of the light. A narrowband color filter selects the wavelength of interest. The four lenses in the system produce four images of the scene, which are recorded as a single CCD-image. The attenuated intensities in each of the four scene-images are used to calculate the Stokes parameters for selected points in the scene for the selected wavelength. A computer program separates the four scene-images in the CCD-image, crops, registers them and calculates the Stokes parameters for each point in the cropped scene.

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