BIJECTION PHOTOELECTRIC SENSOR AND TARGET DETECTION SYSTEM
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United States of America Patent
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Sep 15, 2017
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Oct 19, 2016
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Abstract
Embodiments of the invention relate to a bijection photoelectric sensor and a target detection system. The bijection photoelectric sensor includes a light projector and a light receiver. The light projector includes: a light emitting device, emitting light; a first lens, converting the light emitted by the light emitting device into parallel light; and a first baffle, located between the light emitting device and the first lens. A first through hole is provided on the first baffle. A center of the first through hole is overlapped with a focal point of the first lens. In addition, a visual field formed by the light emitted by the light emitting device is controlled through the first through hole. According to the embodiments of the invention, a light spot with a sufficient amount of light and in a desired shape is able to be obtained.
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