Colorimeter with a beamsplitting prism

Details Colorimeter with a beamsplitting prism Colorimeter with a beamsplitting prism

1998-08-26

1999-09-07

Font, Frank G.

Optics: measuring and testing

By shade or color

356405, 356406, 356407, 356409, 356410, 356414, 356425, 356445, 356446, H04N 100, H04N 136, H04N 140

Patent

active

059495499

ABSTRACT:
A colorimeter for measuring colour of process medium comprising two light sources and two detectors both light sources being arranged to emit a beam through the process medium and the windows adjoining the process medium to both detectors. In order to achieve a solution functioning reliably the windows adjoining the process medium at both light sources are formed from a triangular prism, the two surfaces of which being at an angle to each other, are arranged to divide the beam arriving from the light source into two beams travelling in different directions so that both beams proceed to the process medium through the same part of the window surface formed by a third surface of the prism. Mirror surfaces arranged to gather radiation arriving form both light sources to a sensor of the detector are formed at both detectors.

REFERENCES:
patent: 4932779 (1990-06-01), Keane
patent: 5019715 (1991-05-01), Sting et al.
patent: 5305093 (1994-04-01), Dosmann

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