Brookman Technology, Inc.

Toppan Inc.

Tomoyuki Akahori

Satoshi Takahashi

Yu Ookubo

Takashi Watanabe

Kunihiro Hatakeyama

A light source unit that emits a light pulse, a light receiving unit that includes pixels each including a photoelectric conversion device generating electric charge according to incident light and a plurality of electric charge accumulating units accumulating the electric charge and a pixel driving circuit that distributes the electric charge to the electric charge accumulating units of the pixels to be accumulated therein at a predetermined accumulation timing synchronized with the emission of the light pulse, and a distance image processing unit that measures the distance to a subject present in the measurement space on the basis of amounts of electric charge accumulated in the electric charge accumulating units are included, and the distance image processing unit includes a timing control unit that controls the accumulation timing in accordance with a measurement mode set in advance in accordance with a range of distances that are measurement targets.

Distance-image capturing apparatus and distance-image capturing method

A light source unit, a light receiving unit that includes a distance image sensor in which a plurality of pixels each including a photoelectric conversion device generating electric charge corresponding to incident light and a plurality of electric charge accumulating units accumulating the electric charge and dividing and accumulating the electric charge among the electric charge accumulating units at a predetermined accumulation timing are arranged in a two-dimensional matrix pattern, a distance image processing unit that is configured to acquire a distance from a subject present in the space that is an imaging target, and a timing determining unit that is configured to determine the accumulation timing in the measurement time interval on the basis of an electric charge amount in each of the electric charge accumulating units in an inspection time interval in which the light pulse is not emitted at the accumulation timing are provided.

Distance image capturing device, distance image capturing system, and distance image capturing method

A distance image capturing apparatus has a light source unit that emits an intermittent light pulse into a space, a light receiving unit that includes a plurality of pixels each having a photoelectric conversion device and electric charge accumulating units, and a distance image processing unit. The distance image processing unit acquires an electric charge amount distributed by a predetermined fixed number of times and accumulated in the accumulating units. The distance image processing unit acquires electric charge amounts accumulated in the accumulating units with different number of times of electric charge distribution as one set and selects one of a first electric charge amount with a larger number of electric charge distribution and a second electric charge amount for acquiring a distance from a subject based on a comparison result with a threshold.

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Hamamatsu, Japan

Tomoyuki Akahori