Distance measurement apparatus

Details Distance measurement apparatus Distance measurement apparatus

1996-02-26

1998-09-15

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with one projected beam

356 307, 2502016, 396120, G01C 300

Patent

active

058087265

ABSTRACT:
This invention has as its object to provide a distance measurement apparatus which can relatively easily control the clock generation timing and can prevent dark currents generated by accumulation units from being unbalanced between the ON and OFF states of a light-projection operation even when the accumulation apparatus for temporarily holding charges are arranged between a sensor array and a charge transfer apparatus. In order to achieve this object, a distance measurement apparatus, which projects a beam spot onto an object to be measured, a distance to which is to be measured, and performs triangulation by receiving light reflected by the object to be measured, includes light-projection apparatus for projecting the beam spot onto the object to be measured, a sensor array including an array of a plurality of sensors for receiving and photoelectrically converting the light reflected by the object to be measured, integration apparatus for integrating output charges from the sensors of the sensor array, charge transfer apparatus for transferring the charges integrated by the integration apparatus, at least a portion of the charge transfer apparatus being coupled in a ring shape, and a pair of charge accumulation apparatus, arranged in parallel between the integral apparatus and the charge transfer apparatus, for temporarily storing the charges transferred from the integration apparatus to the charge transfer apparatus.

REFERENCES:
patent: 4615616 (1986-10-01), Shiomi
patent: 5294802 (1994-03-01), Kunishige
patent: 5534991 (1996-07-01), Maeda et al.
patent: 5640005 (1997-06-01), Oda
Partial European Search Report for Application No. EP 96 30 1325, Jun. 30, 1997.

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