Patent ID: 9671286
Date: 2017-06-06
CPC Classifications: G01J

Claim:
1. A spectroscopic sensor comprising: an interference filter unit, having a cavity layer and first and second mirror layers opposing each other through the cavity layer, for selectively transmitting therethrough a predetermined wavelength range of light according to an incident position thereof from the first mirror layer side to the second mirror layer side; and a light detection substrate, having a light-receiving surface for receiving the light transmitted through the interference filter unit, for detecting the light incident on the light-receiving surface; wherein the interference filter unit has: a first filter region corresponding to the light-receiving surface as seen in a predetermined direction intersecting the light-receiving surface; and a ring-shaped second filter region surrounding the first filter region as seen in the predetermined direction; wherein the light detection substrate has a plurality of pad units for wiring contained in the second filter region as seen in the predetermined direction; wherein the second filter region is formed with a through hole for exposing the pad units to the outside; and wherein a wire is connected to each of the pad units through the through hole.