INFRARED SENSOR AND INFRARED SENSOR ARRAY

摘要

An infrared sensor for detecting infrared light rays of a specific wavelength is disclosed. The infrared sensor includes a package and an infrared detecting element formed on the package. The infrared detecting element includes a thermal detector and an absorber formed on the thermal detector to absorb infrared light rays of a specific wavelength. The infrared light rays of the specific wavelength are detected by the conversion of the infrared light rays into heat. A cap formed on the package is provided to cover the infrared detecting element. The cap includes a body having a front and rear surfaces, through which the infrared light rays transmit and a shielding film formed on at least one of the front and rear surfaces of the body to define a window. The infrared light rays are reflected on the shielding film except for the window. Every one of the infrared light rays passing through the window of the cap impinge on the absorber.

主权项

1. An infrared sensor for detecting infrared light rays of a specific wavelength, the infrared sensor comprising:
a) a package; b) an infrared detecting element formed on the package, the infrared detecting element comprising:
a thermal detector; andan absorber formed on the thermal detector which is configured to absorb infrared light rays of a specific wavelength, wherein the infrared light rays of the specific wavelength are detected by the conversion of the infrared light rays into heat; and c) a cap formed on the package to cover the infrared detecting element, the cap comprising:
a body having a front and rear surfaces, through which the infrared light rays transmit; anda shielding film, with a window formed therein, provided on at least one of the front and rear surfaces of the body, wherein the infrared light rays are reflected on the shielding film other than the portion of the window, wherein every one of the infrared light rays passing through the window of the cap impinges on the absorber.