Diffraction grating and system for the formation of color compon

Details Diffraction grating and system for the formation of color compon Diffraction grating and system for the formation of color compon

1979-03-26

1981-07-07

Stern, Ronald J.

350 11, 350169, G02B 2744, G02B 2518

Patent

active

042771382

ABSTRACT:
A device for spacially separating specific spectral regions, preferably of color components from a wideband spectrum which is actively and/or passively radiated by objects. The spectral regions, or color components, are derived from the diffraction orders of a diffraction grating (phase grating), which is disposed in the pupil of an imaging lens and whose groove profile consists of several steps, which produce path length differences which are integral multiples of a specific wavelength.

REFERENCES:
patent: 2769111 (1956-10-01), Sadowsky
patent: 3488124 (1970-01-01), Lamberts
patent: 3883232 (1975-05-01), Tsunoda
patent: 3911479 (1975-10-01), Sakurai

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