IP Library › Patent Application 16959636
Patent Application
App. No. 16/959,636

COLOR MEASUREMENTS OF TURBID LIQUIDS

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Quick Facts
Patent No.
US None
App. No.
16/959,636
Abstract

The present invention relates to a set-up and a method for measuring color of a turbid liquid giving a result matching a visual observation.

Claims (55)

1 . A set-up for measuring a color of a turbid liquid to obtain a result matching a visual color observation comprising:

i) a housing wherein at least 50% of the inside area is white; and

ii) a light source illuminating the inside of the housing giving consistent, light conditions;

iii) a transparent sample holder placed inside the housing positioned against the optical fiber connected to the entrance slit of the detector of a spectrophotometer;

iv) a colored turbid liquid to be poured into the sample holder of iii);

v) a spectrophotometer for measuring the color spectrum of the colored turbid liquid;

vi) a computer; and

vii) a spectrophotometric software which is able to collect and calculate colorimetric data.

2 . The set-up according to claim 1 , further comprising a spectrophotometer, wherein:

the light source mimics daylight;

the transparent sample holder contains a stationary, turbid liquid;

and

the colorimetric data are lightness, chroma and hue.

3 . The set-up according to claim 1 , wherein the colorimetric data are lightness, chroma and hue.

4 . The set-up according to claim 1 , wherein the light source of ii) is mimicking daylight.

5 . The set-up according to claim 1 , wherein at least 65% of the inside area of the housing is colored white.

6 . (canceled)

7 . The set-up according to claim 1 , wherein the sample holder is colorless.

8 - 11 (canceled)

12 . The set-up according to claim 1 , wherein the sample holder is removable.

13 . The set-up according to claim 1 , wherein the sample holder is the packaging of a final product.

14 . The set-up according to claim 1 , wherein the turbid liquid is a non-diluted final product.

15 . (canceled)

16 . A method for measuring the color of a turbid liquid matching a visual color observation, comprising:

i) providing a housing wherein at least 50% of the inside area is white, the housing comprising a light source; a spectrophotometer; and a transparent sample holder containing a turbid liquid sample;

ii) illuminating the turbid liquid sample with the the light source;

iii) measuring the color spectrum of the turbid liquid sample with the spectrophotometer;

iv) converting the measured color spectrum into colorimetric values using a computer and a software for doing so; and

v) providing a digital color read out corresponding to

a) a visual observation of the color of the turbid liquid or

b) the color of the turbid liquid.

17 . A method for measuring the color of a final product comprising a turbid liquid matching a visual color observation, comprising:

i) providing a housing wherein at least 50% of the inside area is white, the housing comprising a light source; a spectrophotometer; and a final product comprising a turbid liquid;

ii) illuminating the turbid liquid with the light source;

iii) measuring the color spectrum of the turbid liquid with the spectrophotometer;

iv) converting the measured color spectrum into colorimetric values using a computer and a software for doing so; and

vi) providing a digital color read out corresponding to

a) a visual observation of the color of the turbid liquid, or

b) the color of the turbid liquid.

18 . The method of claim 17 , wherein the final product is a beverage placed in transparent bottle.

19 . The method according to claim 16 for measuring the color of a turbid liquid in the form of chroma, hue and lightness matching a visual color observation: wherein the light source mimics daylight and the converting comprises

converting the measured color spectrum into spectrocolorimetric values using a computer and a software for doing so; and

the digital color read out is in the form of chroma, hue and lightness corresponding to

a) a visual observation, or

b) the color of the turbid liquid

20 . The method according to claim 16 , wherein at least 65% of the inside area of the housing is white.

21 . (canceled)

22 . The method according to claim 16 , wherein the transparent sample holder is the packaging of a final product.

23 . The method according to claim 16 , wherein the transparent sample holder is a final product.

24 . The method according to claim 16 , wherein the liquid is stationary.

25 . (canceled)

26 . The method according to claim 17 , wherein the product is selected from food products, paints, hair products, body care products and cosmetics.

27 . The method according to claim 26 , wherein the food product is selected from a dairy product, an oil product and a beverage.

28 . The method according to claim 27 , wherein the beverage is selected from fruit juice products, smoothies, soft drinks, wine and beer.

29 - 30 (canceled)

Assignments (2)
CHANGE OF NAME Recorded Feb 23, 2022
From: CHR. HANSEN NATURAL COLORS A/S
To: OTERRA A/S
Reel/Frame 059353/0661 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 14, 2020
From: GENIET, FREDERIC; VUILLEMOT-KESENNE, STEPHANIE; GARDON-CHAPELET, MAEVA
To: CHR. HANSEN NATURAL COLORS A/S; UNIVERSITE MONTPELLIER; CENTRE NATIONAL DE RECHERCHE SCIENTIFIQUE
Reel/Frame 054057/0251 →