Patent ID: 8755046
Filing Date: 2014-06-17
Classification: G01J,G01N

Abstract:
1. A spectrometer comprising: a light source to project a light beam to a target object; a spectral element which includes an optical element to disperse the light beam reflected by the target object and including a diffraction element to diffract the light beam; a light receiving element to receive, at pixels, light beams with different spectral characteristics from each other dispersed by the spectral element, wherein the diffraction element and the light receiving element are integrally formed, a sub unit in which the optical element and the diffraction element are fixed in a certain relative position; a holder to hold the light receiving element; and a bonding element to bond the sub unit and the holder, wherein a virtual plane including a surface of the bonding element on which the sub unit is bonded and a virtual plane including a surface of the bonding element on which the holder is bonded are orthogonal to each other.