Test carrier analysis device

Details Test carrier analysis device Test carrier analysis device

1990-04-23

1992-07-21

Evans, F. L.

Optics: measuring and testing

Of light reflection

With diffusion

356 39, G01N 2147

Patent

active

051317567

ABSTRACT:
Test carrier analysis device for determining the reflectivity of a test field surface (measurement surface). An optical unit (2) of the device contains several light transmitters (6, 7) and a measurement receiver, and the light transmitters are directed obliquely from above onto the measurement surface. Improved accuracy without additional outlay is achieved by the fact that the light transmitters (6, 7) in the optical unit (2) are arranged opposite one another with off-set planes of incidence (28, 29).

REFERENCES:
patent: 3473878 (1969-10-01), Schweitzer
patent: 3910701 (1975-10-01), Henderson
patent: 4518259 (1985-05-01), Ward
patent: 4553848 (1985-11-01), Rosicke et al.
patent: 4568191 (1986-02-01), Barry

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