Band-pass filter for electromagnetic radiation.

摘要

The invention relates to a bandpass filter for electromagnetic radiation, which consists of a diaphragm which has slot structures arranged periodically. The invention has the object of designing a bandpass filter such that it has an optimum blocking characteristic. This is achieved in that the bandpass filter has a thickness of between 33 and 500 mu m and that the ratio of the thickness to the grid constant, which describes the periodicity, is greater than 1. ……