Browse Prior Art Database

Large Area Probe

IP.com Disclosure Number: IPCOM000083587D
Original Publication Date: 1975-Jun-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Graff, HH: AUTHOR [+2]

Abstract

Fig. 1 shows a fiber optic probe 10 suitable for use in an instrument such as a spectrophotometer. One end of the probe is split into two fiber optic bundles allowing light to be transmitted into the probe, projected onto the surface of a sample, whereby the reflected light from the sample is picked up and transmitted through the probe assembly out through the other split bundle.

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Large Area Probe

Fig. 1 shows a fiber optic probe 10 suitable for use in an instrument such as a spectrophotometer. One end of the probe is split into two fiber optic bundles allowing light to be transmitted into the probe, projected onto the surface of a sample, whereby the reflected light from the sample is picked up and transmitted through the probe assembly out through the other split bundle.

In some applications, it is desirable that at the test end of the probe, the measurements be taken over a relatively wide area of the test sample and to do this, the ends of the fiber optic bundles are separated and held apart by a filler material.

The remaining figures show how such a probe can be constructed. A fiber optic strand 11 or plurality of such strands, is taken from a supply reel 12 and wound on a mandrel 13. The circumference of mandrel 13 will determine the length of probe 10. Mandrel 13 has a series of groves 14 such as might be formed by a helix on the surface thereof, and in which the fiber optic strand 11 will be wound.

Before the start of winding the first layer of fibers, a tape 15 is placed in a slot
16. Then the first layer is wound. Thereafter, a middle strip 18 provided with groves corresponding to the groves 14 on the drum or mandrel 13 is attached. A second tape 17 is placed in grove 16 overlying the first tape and another layer of fiber optic strands 11 is wound on the drum 13.

Several layers can be built up, if desired, and then the fiber opti...