Wedge-filter spectrometer

Details Wedge-filter spectrometer Wedge-filter spectrometer

1987-12-11

1990-09-18

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

250226, 350166, G01J 312, G01J 350

Patent

active

049573713

ABSTRACT:
A wedge-filter spectrometer 1 comprises means 10 for spectrally dispersing an incident radiation beam comprising a first plurality of layers of high (H) index of refraction material and a second plurality of layers of low (L) index of refraction material, individual ones of the H and the L layers overlying one another in accordance with a given sequence, each of the H and the L layers having a substantially linearly tapered thickness of substantially constant slope, and means for detecting 17 at a plurality of points a spectrally dispersed radiation beam, the radiation beam being spectrally dispersed by the H and the L layers.

REFERENCES:
patent: 2708389 (1955-05-01), Kavanagh
patent: 3442572 (1969-05-01), Illsley et al.
patent: 3885879 (1975-05-01), Louder et al.
patent: 3929398 (1975-12-01), Bates
patent: 4054389 (1977-10-01), Owen
patent: 4187475 (1980-02-01), Wieder
patent: 4346992 (1982-08-01), Schwartz

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