Distance measuring apparatus

Details Distance measuring apparatus Distance measuring apparatus

1997-05-29

1999-06-22

Assouad, Patrick

Data processing: measuring, calibrating, or testing

Measurement system

Dimensional determination

702159, 396 70, 396 89, 396121, 356 3, G01C 300, G01C 302

Patent

active

059152338

ABSTRACT:
A light-projecting unit projects distance measurement light onto an object to be photographed. A light quantity detecting unit splits, from steady light, the reflected signal light quantity of the distance measurement light from the object on the basis of the light received by a sensor, and detects the reflected signal light quanity. A sensor array constituted by a pair of sensor arrays monitors the luminance distribution of light which steadily irradiates the object. Normally, a CPU calculates the distance to the object on the basis of the luminance distribution output from the sensor array. When the object has a low luminance or contrast, the CPU calculates the distance to the object on the basis of the reflected signal light quantity received by the sensor.

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patent: 5655160 (1997-08-01), Saito
patent: 5680648 (1997-10-01), Nonaka
patent: 5737645 (1998-04-01), Saito

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