Patent ID: 9030443
Filing Date: 2015-05-12
Classification: G06F

Abstract:
1. An optical position detecting device comprising: an illumination light source which emits an illumination light; a plurality of detection light source sections which includes a first light emitting element which emits a first detection light and a second light emitting element which is turned on at a timing different from a timing when the first light emitting element is turned on and emits a second detection light; a light source driving section which turns on a part of the plurality of detection light source sections in a first period, and turns on the other part thereof in a second period; a light detecting section which detects the first detection light and the second detection light after the first detection light and the second detection light are reflected by an object; and a position detecting section which detects a position of the object on the basis of an intensity of the first detection light and an intensity of the second detection light that are detected by the light detecting section in the first and second periods, wherein a light color of the illumination light is different from a light color of the first and second detection lights, and a peak wavelength of the first detection light is different from a peak wavelength of the second detection light.