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:
Feb. 14, 1984
Filed:
Jan. 30, 1981
Georg Flatscher, Schneizlreuth, DE;
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Abstract
A multi-color, high density recording medium including a substrate having at least two patterned interference filters formed thereon is described. Each of the filters transmits a different wavelength range of visible light and each of the filters comprises an unpatterned interference layer of an inorganic material which is substantially absorption-free in the visible wavelength range of the spectrum. At least one of the interference filters formed on the substrate comprises a first, unpatterned reflecting layer positioned on one side of the respective interference layer, and a second, patterned reflecting layer positioned on the other side of the respective interference layer, such that the pattern of only the first reflecting layer forms the pattern of the at least one interference filter.