Device for measuring optical characteristic quantities of transp

Details Device for measuring optical characteristic quantities of transp Device for measuring optical characteristic quantities of transp

1996-07-12

1998-06-02

Pham, Hoa Q.

Optics: measuring and testing

Photometers

Integrating spheres

356239, 250228, G01J 104

Patent

active

057608903

ABSTRACT:
The invention provides a device for measuring characteristic quantities of an at least partially transparent sample, comprising: an illumination component including a light source (1) which emits light in a predetermined wavelength range and which is arranged such within this illumination component that the light substantially propagates along a predetermined optical axis, a sample reception space provided between this illumination component and a measuring component and arranged such with respect to this optical axis that the light which emerges from the light source first passes a sample located within that sample reception space and then enters this measuring means, a measuring component including a substantially closed measuring space having an opening through which this optical axis extends and through which the light enters after having passed the sample, and which also includes a photodetector component (2) being sensitive at least within this predetermined wavelength range, including at least two detectors, namely a first detector (4) arranged in the optical axis (3) of the illumination component and a second detector (5) arranged in a predetermined radial distance from this optical axis.

REFERENCES:
patent: 3788744 (1974-01-01), Friedman et al.
patent: 5098187 (1992-03-01), Judge
patent: 5190163 (1993-03-01), Anzai et al.

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