Browse Prior Art Database

Color Analyzer Head for Wet Textiles

IP.com Disclosure Number: IPCOM000085087D
Original Publication Date: 1976-Feb-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Horchos, LA: AUTHOR [+3]

Abstract

In measuring color of samples particularly by a reflectance technique, it is desirable to eliminate as much specular reflection as possible so that the color of the specimen can be determined from diffuse reflection. It is a known principle that specular reflection is an interface phenomena, and that there can be no specular reflection if there is no change in the index of refraction in going from one medium to another.

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Color Analyzer Head for Wet Textiles

In measuring color of samples particularly by a reflectance technique, it is desirable to eliminate as much specular reflection as possible so that the color of the specimen can be determined from diffuse reflection. It is a known principle that specular reflection is an interface phenomena, and that there can be no specular reflection if there is no change in the index of refraction in going from one medium to another.

In the textile industry, there is a need to take a wet sample from a dye machine or vat and obtain a quick determination on the color and the progress of the dying operation. Many colorimeters cannot satisfy this need, because the wet samples present a high and variable gloss ("wet look") with which the colorimeter cannot cope and they are not readily applicable to accommodating sloppy, wet and possibly corrosive specimens. The colorimeter head shown in the drawing is designed to handle just such specimens and uses the principle of suppressing specular reflection discussed above.

In the drawing, two fiber optic bundles 10 and 11, respectively, receive illuminating light from and transmit reflected light to a colorimeter for analysis. These bundles have their ends connected to a metallic housing 12 provided with an inner chamber in which a glass prism 13 is mounted, the chamber being sealed by O-ring seals 14. The lower ends of the fiber optic bundles 10 and 11 abut the upper face of prism 13. The interface refl...