Sample optical properties measuring device with predictive estim

Details Sample optical properties measuring device with predictive estim Sample optical properties measuring device with predictive estim

1994-09-06

1996-10-29

Gonzalez, Frank

Optics: measuring and testing

By shade or color

With sample responsive to plural colors applied simultaneously

356419, 356425, G01N 2125, G01J 346

Patent

active

055701922

ABSTRACT:
The optical properties measuring device of this invention performs preliminary emission of light from a light source prior to main light emission for sample measurement, and approximates the optical properties of the sample based on the output from a photosensor at the time of preliminary emission. Then, based on the approximated optical properties, the luminous energy for the main light emission for sample measurement is determined. Main light emission from the light source in accordance with the luminous energy determined this way is then performed, and the sample's optical properties are calculated based on the output at this time. In other words, this invention is characterized in that the sample's optical properties are approximated beforehand by means of this preliminary light emission, and the luminous energy at the time of the main light emission to perform sample measurement is changed in accordance with the result of this calculation. In this way, high-precision measurement of a sample may performed at all times regardless of the optical properties of the sample.

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patent: 5268730 (1993-12-01), Takagi

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