Patent ID: 11099073

Abstract:
An identification apparatus identifies the kind of an object to be conveyed by a conveyor and includes an illumination optical system illuminating the object with light from a light source, a light capturing optical system capturing Raman-scattered light from the object, a spectral element dispersing the Raman-scattered light, a light-receiving element receiving the Raman-scattered light dispersed by the spectral element, and a data-processing unit acquiring spectral data of the Raman-scattered light from the light-receiving element and performs an identification process. An optical axis of the illumination optical system and an optical axis of the light capturing optical system intersect each other. The illumination optical system is an imaging optical system that has a numerical aperture for the conveyance surface smaller than that of the light capturing optical system for the conveyance surface, or a collimator optical system that converts the light from the light source into parallel light.