Abstract

Transmittance and reflectance measurements on wirecloth and electroformed metallic meshes are presented in the region 0.01 ≤ λ/d ≤ 5. The results were obtained under equal geometric optical conditions with a vacuum grating spectrometer. The measurements are used for the construction of a transmission bandpass filter in the wavenumber region ν > 18 cm⁻¹. In order to be able to construct a bandpass filter in the entire far ir, a reciprocal grid is investigated and found to be suitable as a transmission low pass filter characterized only by geometrical parameters.

© 1967 Optical Society of America

Far-infrared bandpass filters from cross-shaped grids

V. P. Tomaselli, D. C. Edewaard, P. Gillan, and K. D. Möller
Appl. Opt. 20(8) 1361-1366 (1981)

Metal Mesh Interference Filters for the Far Infrared

R. D. Rawcliffe and C. M. Randall
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Far Infrared Interference Filters

S. P. Varma and K. D. Möller
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Appl. Opt. 24(10) 1541-1545 (1985)

Far Infrared Filters for a Rocket-Borne Radiometer

H. V. Romero, J. Gursky, and A. G. Blair
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