Nicos M Komodromos

US Patent:

42994977, Nov 10, 1981

Filed:

Feb 19, 1980

Appl. No.:

6/122503

Inventors:

Nicos M. Komodromos - Flint MI

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N 2157

US Classification:

356448

Abstract:

A portable instrument quantitatively determining the distinctness of image of a sample paint film by providing comparison of the film with several standard films of known distinctness of image is provided. The instrument displays the sample and one of the standards within an enclosed casing while an image forming pattern is projected simultaneously on both by a light source within the instrument. By changing the standard which is displayed, an observer compares the distinctness of image of the sample with the known values of several standards until a match is found.