Optics: measuring and testing – Angle measuring or angular axial alignment – Star/sun/satellite position indication with photodetection
Reexamination Certificate
2011-04-12
2011-04-12
Alsomiri, Isam (Department: 3662)
Optics: measuring and testing
Angle measuring or angular axial alignment
Star/sun/satellite position indication with photodetection
Reexamination Certificate
active
07924415
ABSTRACT:
The present invention provides a light direction sensor for determining the direction of a light source. The system includes an image sensor; a spacer attached to the image sensor, and a pattern mask attached to said spacer. The pattern mask has a slit pattern that as light passes through the slit pattern it casts a diffraction pattern onto the image sensor. The method operates by receiving a beam of light onto a patterned mask, wherein the patterned mask as a plurality of a slit segments. Then, diffusing the beam of light onto an image sensor and determining the direction of the light source.
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Alsomiri Isam
Edwards Chistopher O.
The United States of America as represented by the Administrator
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