Process for the luminescense-spectroscopic examination of coatin

Details Process for the luminescense-spectroscopic examination of coatin Process for the luminescense-spectroscopic examination of coatin

1981-10-09

1984-07-17

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

2504591, G01N 2164

Patent

active

044602740

ABSTRACT:
The invention relates to a process for luminescence-spectroscopic examination and determination of coatings and coating profiles of solid and liquid layers and layer assembles whereby the luminescent substances present in the layers are photoselectively probed and determined through emission product spectra in incident and/or transmitted light by a photon detector using an emission spectroscopic process and whereby the photoselectivity of the luminescence-spectroscopic process being based on the substance related choice of the difference in wavelength .DELTA. .lambda. between the emission wavelength .lambda..sub.e and the excitation wavelength .lambda..sub.a.

REFERENCES:
patent: 3341705 (1967-09-01), Alburger
patent: 3386920 (1968-06-01), Alburger
patent: 3975098 (1976-08-01), West
patent: 4037960 (1977-07-01), Macemon
Smith, "Luminescence Spectroscopy a Versatile Analytical Tool", Research/Development, pp. 20-27, Jul. 1968.
Smart, "Measurement of Thin Liquid Films by a Fluorescence Technique", Wear, vol. 29, #1, pp. 41-47, Jul. 1974.

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