Optics: measuring and testing – Range or remote distance finding – Triangulation ranging to a point with two or more projected...
Reexamination Certificate
2011-04-05
2011-04-05
Alsomiri, Isam (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
Triangulation ranging to a point with two or more projected...
C356S003110
Reexamination Certificate
active
07920247
ABSTRACT:
A distance measurement system includes: an projection apparatus (1) which projects measurement beams (PL1, PL2) at least at first and second projection angles (α3, α15, α, β) towards a detection area; an image pick-up apparatus (2) which picks up an image of a first reflected light (LB1) and an image of a second reflected light (LB2) from the detection area. The system further includes: a distance calculation unit (32) which calculates a first distance (d1) to a first measurement point (P2, P5) and a second distance (d2) to a second measurement point (P4, P7); a judgment unit (33) which judges that specular reflection is caused; and an operation unit (34) which, when it is judged by the judgment unit (33) that the specular reflection is caused, calculates a distance (d4) to a detection object (MB1, MB2) causing the specular reflection.
REFERENCES:
patent: 7812931 (2010-10-01), Nishiuchi
patent: 2003/0193657 (2003-10-01), Uomori et al.
patent: 2008/0044060 (2008-02-01), Satoh et al.
patent: 2000-193438 (2000-07-01), None
Alsomiri Isam
Foley & Lardner LLP
Nissan Motor Co,. Ltd.
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