OPTICAL SENSOR

摘要

An optical sensor includes a light-emission unit, a controller, a light-reception unit that receives a first reflected light which is reflected at the transparent plate and a second reflected light that is reflected at an external object outside of the transparent plate, a calculator that, based on the light received by the light-reception unit, calculates whether an adhered substance is adhered to the transparent plate, and calculates a relative position of the external object, and a fixing portion that fixes the light-emission unit and the light-reception unit with respect to the transparent plate, wherein the calculator calculates whether the adhered substance is adhered to the transparent plate and calculates the relative position of the external object based on the light received by the light-reception unit.

主权项

1. An optical sensor, comprising:
a light-emission unit that irradiates light to an inner surface of a transparent plate; a controller that controls light-emission of the light-emission unit; a light-reception unit that receives each of
a first reflected light which is reflected at an interface between an outer surface of the transparent plate and external atmosphere, anda second reflected light that passes through the transparent plate and which is reflected at an external object outside of the transparent plate; a calculator that, based on the light received by the light-reception unit, performs each of
calculating whether an adhered substance is adhering to the outer surface of the transparent plate, andcalculating a relative position between the external object and the light-reception unit; and a fixing portion that fixes each of the light-emission unit and the light-reception unit with respect to the transparent plate, wherein the calculator
calculates whether the adhered substance is adhered to the outer surface of the transparent plate based on the light received by the light-reception unit upon a time required for the light-reception unit to receive the first reflected light elapsing after the light-emission unit emits light, andcalculates the relative position between the external object and the light-reception unit based on the light received by the light-reception unit at a timing other than upon the time required for the light-reception unit to receive the first reflected light elapsing after the light-emission unit emits light.