Beam Conducting Cavity Structure, Gas Sensor and Method for Production Thereof

A beam-guiding cavity structure comprising:

• at least one first curved surface, one second curved surface and one third curved surface spanning a cavity, the first, second and third curved surfaces respectively having at least one first focal point and one second focal point,
• wherein the cavity is configured such that substantially no distance is laterally formed between the first focal point of the first curved surface and the second focal point of the second curved surface,
• wherein the cavity is further configured such that substantially no distance is laterally formed between the first focal point of the second curved surface and the second focal point of the third curved surface,
• 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, and
• wherein the first, second and third curved surfaces have different shapes or dimensions to one another.

The beam-guiding cavity structure as claimed in claim i6, further comprising:

• a first plate comprising at least one first cavity with the first curved surface;
• and
• a second plate comprising at least one second cavity with the second curved surface,
• wherein the first plate is connected to the second plate such that the first cavity and the second cavity together form the cavity.

A method for producing a beam-guiding cavity structure, the method comprising:

• forming the beam-guiding cavity structure having at least one first curved surface, one second curved surface and a third curved surface spanning a cavity, the first, second and third curved surfaces respectively having at least one first focal point and one 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, and
• wherein the first, second and third curved surfaces are formed with different shapes or dimensions to one another.

A method for producing a gas sensor, the method comprising:

• forming a beam-guiding cavity structure having 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;
• and
• arranging a detector for detecting the electromagnetic radiation so that the detector is optically coupled to the emitter by the beam-guiding cavity structure.