Optics: measuring and testing – Range or remote distance finding
Reexamination Certificate
2007-09-17
2010-10-05
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
Range or remote distance finding
C356S406000
Reexamination Certificate
active
07808617
ABSTRACT:
A distance detecting arrangement employs at least two sensors having different ranges and resolutions of operation. Embodiments disclosed contemplate at least four modes of operation. In a first mode, only one sensor is employed. In a second mode, a longer range and lower resolution sensor is employed until a threshold value of distance is reached, at which point a shorter range and higher resolution sensor is employed. In a third mode, both the longer range and shorter range sensors are employed simultaneously. In a fourth mode, a low resolution profile is used to rescan the object with the high resolution sensor to provide a high resolution profile measurement. Embodiments facilitate the method disclosed by including a beam redirecting apparatus and preferably include a servo position system that can move the sensors and the object relative to each other.
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International Search Report and Written Opinion for related application No. PCT/US2008/71945.
Gesner Eric G.
Kay David B.
Chowdhury Tarifur
Harter Secrest & Emery LLP
Pajoohi Tara S
Quality Vision International, Inc.
Ryan, Patent Agent Thomas B.
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