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Browse Prior Art Database

Microspectrographic Device

IP.com Disclosure Number: IPCOM000092192D
Original Publication Date: 1968-Oct-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Lachaud, M: AUTHOR [+3]

Abstract

This microspectrographic device is used to determine the thickness of small areas. A differential made is employed and two identical light beams issued from a same source are compared. One crosses the object to be measured and the other crosses the reference constituted by a known sample. Results are obtained either by oculars or by photocells. Differences between phase and amplitude indicate how the characteristics between the object and the sample compare. The combination of a tungsten bulb, a diaphragm and a filter is used to provide a monochromatic light beam. Microscope objectives permit measurements on small areas.

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Microspectrographic Device

This microspectrographic device is used to determine the thickness of small areas. A differential made is employed and two identical light beams issued from a same source are compared. One crosses the object to be measured and the other crosses the reference constituted by a known sample. Results are obtained either by oculars or by photocells. Differences between phase and amplitude indicate how the characteristics between the object and the sample compare. The combination of a tungsten bulb, a diaphragm and a filter is used to provide a monochromatic light beam. Microscope objectives permit measurements on small areas.

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