Browse Prior Art Database

Mirror Tunnel Probe

IP.com Disclosure Number: IPCOM000085089D
Original Publication Date: 1976-Feb-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Litz, FA: AUTHOR [+3]

Abstract

A probe 1 is used to illuminate a test sample 2 and collect light reflected from the sample. It is particularly adapted for use in measuring the color of a textile in such a manner as to reduce the effect of sample orientation and critical surface location.

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Mirror Tunnel Probe

A probe 1 is used to illuminate a test sample 2 and collect light reflected from the sample. It is particularly adapted for use in measuring the color of a textile in such a manner as to reduce the effect of sample orientation and critical surface location.

Probe 1 includes four or more mirrors forming a downwardly truncated tube having internal reflective surfaces. The lower ends of the thus formed tube are adapted to be placed on top of sample 2.

The upper ends are connected to a cover 3 whose internal surface may also be reflective. A bifurcated fiber optic bundle 4 is connected to cap 3. Half of the fibers receive illumination light and the other half transmit light collected from the sample by probe 1.

Fig. 2 shows an alternate design of the fiber optics in which a single centrally located bundle 5 is used to illuminate the sample 2. A light collecting bundle 6 has four ends that are fanned out as shown at 7, and form elongated rectangles located at right angles to each other for collecting light.

The illumination from the fiber optic bundle is reflected by the internal surfaces of probe 1 providing a simulated multisource illumination system. The reflected light from the sample 2 is observed by the collection section of the fiber optic bundles. Because of the mirror reflection from the internal surfaces, the light from the sample 2 appears to be seen by a number of probes 1' as sampling the diffused light reflected from many angles. The...