Detector for measuring the luminous intensity scattered by thin

Details Detector for measuring the luminous intensity scattered by thin Detector for measuring the luminous intensity scattered by thin

1994-11-23

1996-11-05

Pham, Hoa Q.

Optics: measuring and testing

By particle light scattering

With photocell detection

356381, G01N 2100

Patent

active

055723217

ABSTRACT:
The present invention relates to a device for measuring the luminous intensity scattered by thin films of colloidal media. It is more particularly intended for submicron grain-size analysis by photon correlation, and comprises a device for measuring the luminous intensity scattered by thin films (16) of colloidal media. The invention includes a monochromatic luminous source (2); a converging optical system (4) focusing the source on the thin film to be analyzed; at least one photosensitive detector (5; 5'; 5"; 5'") detecting the light scattered or backscattered by the thin film; and a system (60, 70) for processing the signal coming from photodetector(s) (5).

REFERENCES:
patent: 3621243 (1971-11-01), Olivier
patent: 4940326 (1990-07-01), Tatsuno
patent: 4966457 (1990-10-01), Hayano et al.
patent: 5198369 (1993-03-01), Itoh et al.

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