Abstract

The properties of bandpass filters for broadband photometry are reported in the 3–12-cm−1 frequency range. The filters are based on a combination of capacitive grids deposited on thick Mylar substrates and are designed to have very high out-of-band rejection. Low frequencies are blocked by a thick grill that consists of a hexagonal grid of circular holes in a thick metal plate.

© 1981 Optical Society of America

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