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Alain Sei Phones & Addresses

  • 220 Segovia Ave, San Gabriel, CA 91775 (626) 570-0203
  • Pasadena, CA
  • Saint Paul, MN
  • Redondo Beach, CA
  • Minneapolis, MN
  • Houston, TX
  • Los Angeles, CA
  • 220 Segovia Ave, San Gabriel, CA 91775

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Position: Executive, Administrative, and Managerial Occupations

Publications

Us Patents

Hybrid Curvature-Tilt Wave Front Sensor

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US Patent:
6396588, May 28, 2002
Filed:
Oct 6, 1999
Appl. No.:
09/413584
Inventors:
Alain Sei - Pasadena CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
G01B 1102
US Classification:
356512, 2502019
Abstract:
A hybrid curvature/tilt wave front sensor ( ) that employs both tilt measurements and curvature measurements of the wave front of a light beam ( ). The light beam ( ) is split into a first path and a second path. The light beam ( ) on the first path is directed to a tilt sensor ( ) employing a lenslet array ( ) having a plurality of lenses ( ). The lenses ( ) focus separate portions ( ) of the wave front onto a CCD ( ) that provides local intensity measurements. A computer ( ) receives electrical information of the intensity of the various beam portions ( ) and computes a tilt measurement based on this information. The light beam ( ) on the second path is directed to a curvature sensor ( ) that includes a pair of CCDs ( ) positioned at the same distance before and after the focal plane of a lens ( ). The intensity measurement of the beam ( ) at these locations is sent to the computer ( ) which performs curvature measurements on the beam wave front. Algorithms are employed to determine the phase of the wave front based on the tilt and curvature measurements.
Alain C Sei from San Gabriel, CA, age ~59 Get Report