Optics: measuring and testing – Photometers – Photoelectric
Reexamination Certificate
2007-07-10
2007-07-10
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
Photometers
Photoelectric
Reexamination Certificate
active
10814517
ABSTRACT:
A pointing system comprises an encoded surface and a pointing device for use with an encoded surface remote from the pointing device. The pointing device comprises a collimated light source for projecting a collimated light beam having a wavelength outside the visible light spectrum onto the encoded surface. The encoded surface scatters the collimated light beam striking the encoded surface. A detector associated with the collimated light source detects at least a portion of the scattered light. A controller is associated with the detector and configured to respond to the detected portion of the scattered light to determine a position where the collimated light beam strikes the encoded surface. The position corresponds to where the device is pointing.
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Kong Yuan
Larsen Glen
Akanbi Isiaka O.
Chowdhury Tarifur
Senniger Powers
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