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US 10,591,602 B2Granted
Object detector and sensor
AssigneeRicoh Company, Ltd.
InventorsKazuhiro Akatsu, Tadashi Nakamura, Kohji Sakai
Life of this patent
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Abstract
An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.
Claims20
An object detector, comprising:
- a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters;
- a light receiver which receives light emitted from the projector, and reflected by an object;
- and
- a light source driver which lights on and lights off each of the light emitter groups of the light source, wherein
- the light receiver includes a single light-receiving element, and
- a size of a light-receiving area is the same as a size of an emission area when the plurality of light emitter groups in the light source are simultaneously lighted on.
3 more elements
An object detector, comprising:
- a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters;
- a light receiver which receives light emitted from the projector, and reflected by an object;
- and
- a light source driver which lights on and lights off each of the light emitter groups of the light source, wherein
- the plurality of light emitter groups is disposed along a first direction and a second direction orthogonal to each other,
- the light receiver includes a light-receiving optical system which collects the light reflected by the object, and
- the light-receiving optical system has a focal length which differs between the first direction and the second direction.
4 more elements
Dependencies are inferred from the claim text.