Patent ID: 10890491

Abstract:
The invention relates to an optical detector (110) for an optical detection, in particular, of radiation within the infrared spectral range, specifically, with regard to sensing at least one optically conceivable property of an object (112). More particular, the optical detector (110) may be used for determining transmissivity, absorption, emission, reflectance, and/or a position of at least one object (112). Further, the invention relates to a method for manufacturing the optical detector (110) and to various uses of the optical detector (110). The optical detector (110) comprises —an optical filter (114) having at least a first surface (116) and a second surface (118), the second surface (118) being located oppositely with respect to the first surface (116), wherein the optical filter (114) is designed for allowing an incident light beam (120) received by the first surface (116) to pass through the optical filter (114) to the second surface (118), thereby generating a modified light beam (122) by modifying a spectral composition of the incident light beam (120); —a sensor layer (128) comprising a photosensitive material (130) being deposited on the second surface (118) of the optical filter (114), wherein the sensor layer (128) is designed to generate at least one sensor signal in a manner dependent on an illumination of the sensor layer (128) by the modified light beam (122); and —an evaluation device (140) designed to generate at least one item of information provided by the incident light beam (120) by evaluating the sensor signal. The optical detector (110) constitutes an improved simple, cost-efficient and, still, reliable detector for detecting optical radiation, especially within the infrared spectral range, specifically with regard to sensing at least one of transmissivity, absorption, emission and reflectance. Hereby, the optical detector (110) is capable of effectively removing stray light as far as possible.