Patent ID: 9222833
Filing Date: 2015-12-29
Classification: G01J,H04N

Abstract:
1. A spectral characteristic obtaining apparatus comprising: a spectroscopic unit configured to separate reflected light from light emitted onto an object by a light irradiation unit, into a plurality of diffracted lights; a light receiving unit including a plurality of pixels configured to receive the plurality of diffracted lights with different spectral characteristics, the light receiving unit being configured to simultaneously receive only all of n-order diffraction light among the plurality of diffracted lights with the different spectral characteristics; and a diffraction unit configured to lead lights with different wavelength characteristics to a number of pixels constituting the spectroscopic unit, the diffraction unit being positioned such that a diffraction direction has an angle with respect to an array direction of the plurality of pixels of the light receiving unit in a plane perpendicular to a light axis of the light receiving unit, the angle is set based on a product of a height and a width of each of the plurality of pixels, and a number of plurality of pixels included in each spectroscopic sensor of the light receiving unit.