The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1987
Filed:
Apr. 11, 1985
Applicant:
Inventors:
Assignee:
Carl-Zeiss-Stiftung, Heidenheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356128 ; 356328 ;
Abstract
The invention is directed to an arrangement for determining the spectral characteristic of the refractive index of a liquid or a gas wherein the specimen is enclosed between two boundary surfaces spaced apart between 1 and 50 .mu.m. The surfaces are at least approximately parallel to each other. The boundary surfaces cause interferences when illuminated with white light passing through the surfaces. The interferences are measured by a spectrometer in their wavelength-dependent course and are thereafter evaluated.