Calibrator for non-destructive transmission optical measuring ap

Details Calibrator for non-destructive transmission optical measuring ap Calibrator for non-destructive transmission optical measuring ap

1999-05-14

2000-07-25

Pham, Hoa Q.

Optics: measuring and testing

Sample, specimen, or standard holder or support

356432, 3562431, 209587, G01N 2101

Patent

active

060942657

ABSTRACT:
In a calibrator used for a non-destructive transmission optical measuring apparatus for quantitatively determining a specific component contained in a measuring object by making light incident on the measuring object at its light-incident area, detecting the light having entered, and having been transmitted through, the interior of the measuring object, at its light-emergent area set at a position different from the light-incident area, and measuring absorption of the light to quantitatively determine the specific component contained in the measuring object, the calibrator comprises a closed body having a light inlet and a light outlet, the interior of which is provided with a substrate having light absorption characteristics identical or similar to those of the specific component, and in which a light path length from the light inlet to the light outlet is so set as to be equal or substantially equal to an effective light path length of the light transmitted through the interior of the measuring object. This calibrator can make calibration on the non-destructive transmission optical measuring apparatus without destroying measuring objects and in a high precision and a good reproducibility and also in a simple way and short time.

REFERENCES:
patent: 5675419 (1997-10-01), Van Den Berhg et al.
patent: 5726750 (1998-03-01), Ito et al.

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