Optical detecting, monitoring or measuring arrangements

Details Optical detecting, monitoring or measuring arrangements Optical detecting, monitoring or measuring arrangements

1980-05-23

1982-10-26

Corbin, John K.

Optics: measuring and testing

By particle light scattering

With photocell detection

350162R, 356354, G01B 902

Patent

active

043558984

ABSTRACT:
According to the present invention there is provided an optical detecting, monitoring or measuring arrangement, comprising a movable diffraction grating arranged for angular displacement by means responsive for example to changes in one or more parameters, such as temperature or pressure, whereby the color of light being reflected to a light-receiving point from said grating changes and said light is then directed onto a fixed diffraction grating so that the direction of a light beam consequentially reflected from said fixed diffraction grating changes with change in color, such change in direction being dependent upon and providing an indication of the change in said parameter or parameters.

REFERENCES:
patent: 3988671 (1975-03-01), Pedinoff

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