Optical distance measuring sensor and self-propelled cleaner
First Claim
1. An optical distance measuring sensor, comprising:
- a plurality of light-emitting elements that emit light;
one lens that transmits light emitted from the plurality of light-emitting elements;
a photodetector having a light-receiving surface on which light passed through the lens and reflected on an object to be detected is incident, the photodetector outputting a signal corresponding to a position of the incident light in the light-receiving surface;
a light emission driving part that drives the plurality of light-emitting elements;
a distance signal outputting part that receives a signal from the photodetector and outputs distance signal representing a distance to the object to be detected;
a timing signal outputting part that outputs a timing signal having a prescribed cycle to activate a selected one of the plurality of light-emitting elements at a prescribed cycle;
an initialization signal outputting part that outputs an initialization signal to the timing signal outputting part at a timing for switching the light emission among the light-emitting elements, such that the timing signal outputting part activates another selected one of the plurality of light-emitting elements at the prescribed cycle.
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Accused Products
Abstract
An optical distance measuring sensor has a plurality of light-emitting elements, a light-emitting lens, a photodetector having a light-receiving surface, a light emission driving part to sequentially drive the light-emitting elements, and a distance signal outputting part. Light emitted from each light-emitting element passes through the light-emitting lens, then is reflected by an object to be detected, and then gets incident on the light-receiving surface of the photodetector, which outputs a signal corresponding to a position of the incident light in the light-receiving surface. Upon receipt of the signal, the distance signal outputting part outputs a distance signal representing a distance to the object.
14 Citations
12 Claims
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1. An optical distance measuring sensor, comprising:
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a plurality of light-emitting elements that emit light; one lens that transmits light emitted from the plurality of light-emitting elements; a photodetector having a light-receiving surface on which light passed through the lens and reflected on an object to be detected is incident, the photodetector outputting a signal corresponding to a position of the incident light in the light-receiving surface; a light emission driving part that drives the plurality of light-emitting elements; a distance signal outputting part that receives a signal from the photodetector and outputs distance signal representing a distance to the object to be detected; a timing signal outputting part that outputs a timing signal having a prescribed cycle to activate a selected one of the plurality of light-emitting elements at a prescribed cycle; an initialization signal outputting part that outputs an initialization signal to the timing signal outputting part at a timing for switching the light emission among the light-emitting elements, such that the timing signal outputting part activates another selected one of the plurality of light-emitting elements at the prescribed cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification