Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2007-09-18
2009-02-24
Tarcza, Thomas H (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
Reexamination Certificate
active
07495746
ABSTRACT:
An optical device to measure the distance between the device itself and an obstacle/object comprising a unit to emit radiation including an aligned series of sources of radiation coupled to a series of arrangements of lenses to guide the radiation emitted by the sources. An optical acquisition unit comprising a matrix of photodetectors has a field of view including the scene in front of the optical device and including the obstacle. The signals leaving the acquisition unit are sent to a control and processing unit for calculation of the distance from the obstacle. The unit for the emission and conformation of the radiation emits a beam having a transverse section of a form elongated along an axis that is progressively rotated for transverse sections of the beam progressively more distant from the emission unit. In this manner, the distance of the obstacle may be calculated on the basis of the angular position of the section of the beam intercepted by the obstacle, as acquired by said acquisition unit.
REFERENCES:
patent: 6496754 (2002-12-01), Song et al.
patent: 2003/0043363 (2003-03-01), Jamieson et al.
patent: 2004/0008394 (2004-01-01), Lange et al.
patent: 36 18 624 (1987-12-01), None
Bernard Stefano
Pallaro Nereo
Repetto Piermario
C.R.F. Societa Consortile per Azioni
Nixon & Vanderhye P.C.
Ratcliffe Luke D
Tarcza Thomas H
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