Patent ID: 8980675
Filing Date: 2015-03-17
Classification: G01J,G02B,H01L

Abstract:
1. A method for manufacturing 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 light in a predetermined wavelength range according to an incident position thereof; a light-transmitting substrate for transmitting therethrough light incident on the interference filter unit; and a light-detecting substrate for detecting the light transmitted through the interference filter unit; the method comprising: a first step of forming the cavity layer by etching a surface layer disposed on a handle substrate; a second step of forming the first mirror layer on the cavity layer after the first step; a third step of joining the light-transmitting substrate onto the first mirror layer after the second step; a fourth step of removing the handle substrate from the cavity layer after the third step; a fifth step of forming the second mirror layer on the cavity layer devoid of the handle substrate after the fourth step; and a sixth step of joining the light-detecting substrate onto the second mirror layer after the fifth step.