2.degree./90.degree. Laboratory scattering photometer

Details 2.degree./90.degree. Laboratory scattering photometer 2.degree./90.degree. Laboratory scattering photometer

1976-01-13

1977-10-11

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356104, G01N 2100

Patent

active

040532291

ABSTRACT:
A scattering photometer for measuring the light scattered by particles in a hydrosol at substantially 2.degree. and 90.degree. simultaneously. Light from a source is directed by a first optical system into a scattering cell containing the hydrosol under study. Light scattered at substantially 90.degree. to the incident beam is focused onto a first photoelectric detector to generate an electrical signal indicative of the amount of scattered light at substantially 90.degree.. Light scattered at substantially 2.degree. to the incident beam is directed through an annular aperture symmetrically located about the axis of the illuminating beam which is linearly transmitted undeviated through the hydrosol and focused onto a second photoelectric detector to generate an electrical signal indicative of the amount of light scattered at substantially 2.degree..

REFERENCES:
patent: 3310680 (1967-03-01), Hasegawa
patent: 3518439 (1970-06-01), Fuhrmann
patent: 3659946 (1972-05-01), Kozawa et al.
patent: 3664752 (1972-05-01), Hermieu
patent: 3710933 (1973-01-01), Fulwyler et al.
patent: 3756726 (1973-09-01), Astheimer
patent: 3785735 (1974-01-01), Friedman et al.
patent: 3800147 (1974-03-01), Shea et al.

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