Patent ID: 8436307
Filing Date: 2013-05-07
Classification: G01J

Abstract:
1. A multi-cavity optical sensing and thermopile infrared sensing system, comprising: an optical sensing part; a dielectric layer covering on the top of the optical sensing part; a first optical cavity formed by a first metal reflective layer and a second metal reflective layer inside the dielectric layer; a first thermocouple laterally disposed inside and near the bottom of the dielectric layer; and a second thermocouple laterally disposed inside and near the bottom of the dielectric layer wherein the second thermocouple is disposed parallel to and above the first thermocouple; wherein, in the dielectric layer, a low temperature region is formed in an area which is the overlapping of vertical projections of the first thermocouple, the second thermocouple and the optical sensing part; a high temperature region is formed by the overlapping of vertical projections of the first thermocouple and the second thermocouple, but without the overlaying which belongs to the vertical projection of the optical sensing part.