Title:
MULTI-POINT DISTANCE MEASURING APPARATUS
Document Type and Number:
Japanese Patent JPH02222806
Kind Code:
A
Abstract:
PURPOSE:To suppress a complication of a construction of a distance measuring device by performing a distance measurement in a direction only of a projected luminous flux detected with a selection circuit. CONSTITUTION:A projector 1 irradiates an object with a projection luminous flux selectively in directions and reflected light from the object is received with a photodetector 8. Then, when the projection luminous flux is irradiated selectively in directions, the direction of at least one projection luminous flux is detected with a selection circuit 7 corresponding to a large change in the output caused in the element 8. Then, a distance measurement detector section performs a distance measurement in the direction of the projection luminous flux detected with the circuit 7 to obtain distance measurement information at least one point.
Inventors:
KITAJIMA TOMOYA
SUZUKI AKIRA
SUZUKI AKIRA
Application Number:
JP4173789A
Publication Date:
September 05, 1990
Filing Date:
February 23, 1989
Export Citation:
Assignee:
RICOH KK
International Classes:
G01C3/06; G02B7/32; G03B13/36; (IPC1-7): G01C3/06; G02B7/32; G03B13/36
Attorney, Agent or Firm:
Shuji Sanada
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