Browse Prior Art Database

Disposable Shield for Optical Instrument Head

IP.com Disclosure Number: IPCOM000085868D
Original Publication Date: 1976-Jun-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Atwell, DL: AUTHOR [+4]

Abstract

Some spectrophotometers are designed to measure the color or other characteristics of a test object through reflectant measurement techniques. Some instruments include a head that is positioned against the surface of a test object so as to exclude any external light, thereby allowing accurate measurements to be made.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 2

Disposable Shield for Optical Instrument Head

Some spectrophotometers are designed to measure the color or other characteristics of a test object through reflectant measurement techniques. Some instruments include a head that is positioned against the surface of a test object so as to exclude any external light, thereby allowing accurate measurements to be made.

While such instruments are capable of use with a wide variety of test specimens, they are not commonly used where the heads must contact corrosive materials or a material, such as wet paint, that would require extensive cleaning of the head so as not to interfere with further measurements. Shown in the drawing is a disposable shield that allows the instrument head to be brought into measurement position next to objects, so as to avoid problems of contamination or corrosion.

The drawing is a view along the diameter of an instrument head 1 and a disposable shield 2 used for taking reflectance measurements of a test sample 3. Head 1 includes an illuminating fiber optic bundle 4 that directs light normal to the surface of the test object 3. Two light receiving fiber optic bundles 5 are oriented at 45 degrees so as to receive light reflected from the test object. These fiber optic bundles are connected to the instrument section containing the source of light and a monochromator and detector for analyzing the reflected light. The lower surface of head 1 is flat and has an annular groove 6 therein.

Shield 2 is of a generally annular...