Method and apparatus for measurement of reradiation in particle

Details Method and apparatus for measurement of reradiation in particle Method and apparatus for measurement of reradiation in particle

1979-11-21

1981-06-16

Corbin, John K.

Optics: measuring and testing

By particle light scattering

With photocell detection

250574, 350167, 350169, G01N 2149, G01N 2185, G02B 2712

Patent

active

042734436

ABSTRACT:
Measurement of the energy and direction of radiation, typically scattered light, produced by particles passing through an optical sensing zone is improved in focusing of the scattered light and flexibility in the choice of focal length for positioning of photoresponsive devices.
The improvement is obtained by collimating the collected scattered light entering a deviating device, typically a fresnel prism, and then focusing the emerging separate, independent beams for measurement.
Collimation can be obtained using optical elements including lens systems or reflective systems such as those employing parabolic reflection.

REFERENCES:
patent: 3705771 (1972-12-01), Friedman et al.
patent: 4050782 (1977-09-01), Uchida et al.
patent: 4072421 (1978-02-01), Coyne et al.
Mix, A. L. Jr., "Single Lamp Matrix Illuminator", IBM Tech Disclosure Bulletin, vol. 12, No. 4, Sep. 1969, p. 522.

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