Patent ID: 8610903
Filing Date: 2013-12-17
Classification: G01B,G01S

Abstract:
1. An optical position detection apparatus optically detecting the position of a target object, comprising: a light source unit emitting detection light and default light; a light receiving unit receiving the detection light that is reflected by the target object located in an emission space of the detection light; a position detection unit detecting the position of the target object in the emission space based on the result of the light reception in the light receiving unit when the light source unit is turned on; and a reflection unit reflecting the default light emitted from the light source unit, wherein the detection light emitted from the light source reaches the target object without passing through another object other than ambient air, and the detection light reflected by the target object reaches the light receiving unit without passing through the another object other than the ambient air, and when the light receiving unit receives the default light reflected by the reflection unit, the default light is used for default setting of the optical position detection apparatus if the target object is out of the emission space.