Light-scattering disc collector

Details Light-scattering disc collector Light-scattering disc collector

1980-03-21

1981-06-16

Henry, Jon W.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356432, 350431, G02B 502, G01N 2100

Patent

active

042734193

ABSTRACT:
A light-scattering disc collector member useable in converting a classical (coherence-dependent) microdensitometer to a linear (mode) microdensitometer that is coherence-independent. The member is made of material that is transmissive, non-absorbing, and high scattering as to light, and it preferably comprises a right circular cylinder which is made opaque (such as with black paint), except for a light-transmissive entrance aperture which is located on one base of the cylinder and which is shaped as an inwardly formed hemispherical dome, and a light-transmissive exit aperture which is located on the other base of the cylinder in geometric alignment with the entrance aperture. When used to convert a classical microdensitometer to a linear microdensitometer, the light-scattering disc collector member replaces the objective of the microscope in the sensor optics assembly of the classical microdensitometer.

REFERENCES:
patent: 3802784 (1974-04-01), Reynolds et al.
patent: 4025200 (1977-05-01), Zeineh

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