Devices for evaluating drop systems

Details Devices for evaluating drop systems Devices for evaluating drop systems

1975-08-04

1976-11-16

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250574, 356103, G01N 1502

Patent

active

039921034

ABSTRACT:
Apparatus for the analysis of a system of dispersed particulate matter, such as a spray of liquid drops, in which the shadows of the particles are received as a two-dimensional image on a shadow receptor, and the particles lying within a focal plane within the system are focused in a two-dimensional image on to an image receptor, particles not in the focal plane being out-of-focus at the image receptor by a degree dependent on distance from the plane, so that selection of images having a degree of focus greater than a predetermined degree, and therefore having an intensity greater than a predetermined level, allows the analysis of only particles within a known distance of the focal plane.

REFERENCES:
patent: 3609043 (1971-09-01), Simmons et al.
McCreath et al., "A Technique for Measurement . . . ," J. Phys. E. Sci. Instrum. (G. B.) v-5, No. 6, pp. 601-604, June 1972.

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