Patent ID: 8045158

Claim:
A spectrometer comprising: a package having a light incident opening for making light thereinside and formed with a resin; a lead buried into the package; and a spectroscopic module accommodated into the package; wherein the spectroscopic module comprises: a body portion for transmitting the light made incident from the light incident opening; a spectroscopic portion for dispersing the light transmitted through the body portion and reflecting the light; and a light detecting element electrically connected to the lead and for detecting the light dispersed and reflected by the spectroscopic portion; the spectroscopic module is supported by the package in a state that the body portion is regulated by an inner wall plane of the package so as not to move to a predetermined direction; the package includes a box opened on one side and a lid attached to an opening portion of the box and provided with light incident opening; the spectroscopic module is accommodated into the package so that the light detecting element is positioned on the one side and the spectroscopic portion is positioned on the other side; and the lid is opposed to a plane of the body portion, the plane on which the light detecting element is loaded.