Three-dimensional measurement device and three-dimensional measurement method

a three-dimensional measurement and measurement device technology, applied in the field of three-dimensional measurement devices and three-dimensional measurement methods, can solve the problems of difficult high-speed measurement at short distances, difficult to make a device compact, and difficult to measure distance range, so as to increase the distance range
US20060126054A1Inactive Publication Date: 2006-06-15MINOLTA CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MINOLTA CO LTD
Publication Date
2006-06-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The purpose of the present invention is to realize a compact three-dimensional measurement device of high resolution. In the present invention, a pulse light is projected on an object, the light reflected from the object is received by a solid state area sensor having a plurality of photoelectric conversion elements, the area sensor is controlled with a timing synchronized with the projection of the pulse light, and the distance to each photoelectric conversion element is measured based on the output of the solid state area sensor.
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Description

RELATED APPLICATION

[0001] This application is based on Patent Application No. 2000-155768 filed in Japan, the entire content of which is hereby incorporated by reference. BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to a three-dimensional measurement method and device for obtaining position information of an object by projecting light and receiving the light reflected from the object.

[0004] 2. Description of the Related Art

[0005] Three-dimensional measurement can be accomplished using the time of flight (TOF) from the moment of light pulse transmission to the reception of the returning light pulse reflected by an object since this TOF is dependent on distance.

[0006] Japanese Laid-Open Patent Application No. H11-508371 discloses a device using a solid state area sensor as a photoreceptor device for modulating light entering the solid state area sensor by a photoelectric modulator. The distance is reflected in the amount of expo...

Claims

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