Spectral sensor with interference filter

Details Spectral sensor with interference filter Spectral sensor with interference filter

1987-05-12

1989-04-18

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356352, 356419, 350166, G01J 351

Patent

active

048229989

ABSTRACT:
A spectral sensor comprises that a plurality of arrays of light receiving elements sensitive to different wavelength ranges which are arranged in a non-overlapping relationship with each other within the imaginary circle of a diameter smaller than the sum of lengths of the resective arrays of light receiving elements, and a filtering element of different transmission wavelength for each of the light receiving elements of all of the arrays, which filtering element is arranged in register with the respective light receiving element.

REFERENCES:
patent: 3498693 (1970-03-01), Fein et al.
patent: 3552826 (1971-01-01), Hanes et al.
patent: 4309108 (1982-01-01), Siebert
patent: 4425501 (1984-01-01), Stauffer
patent: 4547704 (1985-10-01), Hinoda et al.

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