Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2005-08-23
2005-08-23
Tarcza, Thomas H. (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
C356S005050
Reexamination Certificate
active
06934012
ABSTRACT:
A ranging apparatus1comprises a laser light emitter3for emitting pulsed laser light, a reflected light receiver4for receiving reflected light, a distance computer10for finding the distance from the elapsed time until the reflected light is received, and a distance display8for displaying this distance. The distance computer10has a counter11for counting the frequency when the reflected light satisfies a specific condition, a table production component12for producing a frequency distribution table corresponding to distance by adding up the counts, a distance determiner13for determining as the distance to the object of measurement the point when the frequencies in the frequency distribution table exceed a threshold, and a distance selector15for selecting a specific distance when a plurality of distances are determined, and displaying this distance on the distance display8. As a result, when a plurality of distances are calculated, these distances can be appropriately displayed, improving the flexibility and functionality.
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Inaba Naoto
Nagasawa Masaya
Andrea Brian
Morgan & Lewis & Bockius, LLP
Nikon Corporation
Tarcza Thomas H.
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