Filter, Method for Producing Filter, and Laser Wavelength Monitoring Apparatus

摘要

A filter includes two translucent bodies. Each of the translucent bodies has a first plane, a second plane that forms a wedge angle with the first plane, and a third plane that intersects with both the first plane and the second plane, first planes of the two translucent bodies are parallel to each other, and second planes of the two translucent bodies are parallel to each other. The filter also comprises a beam splitting film, where surfaces of both sides are respectively combined with the first planes of the two translucent bodies. Two reflective films are combined, respectively, with the second planes of the two translucent bodies.

主权项

1. A filter, comprising:
first and second translucent bodies, wherein each of the first and second translucent bodies has a first plane, a second plane that forms a wedge angle with the first plane, and a third plane that intersects with both the first plane and the second plane, wherein first planes of the first and second translucent bodies are parallel to each other, and wherein second planes of the first and second translucent bodies are parallel to each other; a beam splitting film, wherein a first surface of the beam splitting film is combined with the first plane of the first translucent body and an opposite second surface of the beam splitting film is combined with the first plane of the second translucent body; and first and second reflective films, wherein the first reflective film is combined with the second plane of the first translucent body and the second reflective film is combined with the second plane of the second translucent body.