Patent ID: 11867617
Assignee: OSRAM OLED GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method for producing a gas sensor, the method comprising:
forming a beam-guiding cavity structure having a cavity with at least one first curved surface, one second curved surface and one third curved surface,
wherein the first, second and third curved surfaces respectively have a first focal point and a second focal point,
wherein the first focal point of the second curved surface is arranged next to a connecting line of the first and second focal points of the first curved surface,
wherein the first focal point of the third curved surface is arranged next to a connecting line of the first and second focal points of the second curved surface;
arranging an emitter for emitting electromagnetic radiation so that the emitter is optically coupled to the beam-guiding cavity structure;
arranging a detector for detecting the electromagnetic radiation so that the detector is optically coupled to the emitter by the beam-guiding cavity structure; and
arranging a reference emitter-detector arrangement for registering an ageing of the emitter an ageing of the detector and a damage to the beam-guiding cavity structure.