Method, appliance and installation for the optical determination

Details Method, appliance and installation for the optical determination Method, appliance and installation for the optical determination

1974-04-01

1977-06-14

Queisser, Richard C.

Measuring and testing

Moisture content or absorption characteristic of material

356156, G01B 900

Patent

active

040289354

ABSTRACT:
The invention provides a method, an appliance and an installation for the termination of small displacements of points on the surface of a solid body.
A catadioptric covering, such as a catadioptric paint or a piece of a sheet with catadioptric properties is applied on the point of the solid body whose displacement is to be determined, and after illuminating said covering, one determines in a viewing direction different from that of the displacement the variations in the quantity of light received by a photosensitive receiver coming from an image of the said covering in the plane of which is located a knife-edge partly covered by the said image.

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patent: 3706965 (1972-12-01), Korpel
patent: 3782176 (1974-01-01), Jacobs
patent: 3790281 (1974-02-01), Kessler et al.
patent: 3806222 (1974-04-01), Knappe
patent: 3833299 (1974-09-01), Lang
patent: 3873191 (1975-03-01), Veret

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