Total Reflection Filter
JAN 01, 1950
DOI: 10.1063/1.3066757
Until recently prisms or gratings were customarily used for isolating a narrow band of wavelengths, but during the last few years a series of interference filters have been developed, the commonest of which is analogous to the Fabry‐Perot interferometer and consists of a layer of dielectric about one wavelength thick, sandwiched between two layers of silver.
© 1950. American Institute of Physics
