Optics: measuring and testing – Angle measuring or angular axial alignment – Photodetection of inclination from level or vertical
Reexamination Certificate
2011-07-05
2011-07-05
Alsomiri, Isam (Department: 3662)
Optics: measuring and testing
Angle measuring or angular axial alignment
Photodetection of inclination from level or vertical
Reexamination Certificate
active
07973916
ABSTRACT:
Apparatus and methods for detecting inclination employ a point source of light from which light is emitted through a lens toward a reflective surface of a liquid contained in a vessel. Light reflected from the surface passes through the lens to form a defocused image of the point source on a two-dimensional array of detector elements. Data acquired from the array represents intensity of the light incident on each of the detector elements. A center of gravity representing inclination of the vessel is determined from the data.
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PCT/EP2006/000225 International Search Report.
PCT/EP2006/000225 Written Opinion of the International Searching Authority.
Alsomiri Isam
Riter Bruce D
Trimble Navigation Limited
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