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:
Nov. 14, 1989
Filed:
Mar. 16, 1988
Jurgen Witt, Hainburg, DE;
W. C. Heraeus GmbH, Hanau, DE;
Abstract
To simplify separation of infrared (IR) radiation from visible and ultraviolet (UV) radiation emitted from a xenon lamp (2), the lamp is surrounded by a cylindrical filter (1) reflecting IR radiation inwardly of the filter but passing UV and visible spectral radiation therethrough. IR radiation reflected inwardly of the filter is absorbed, in accordance with the invention, by an absorbing surface (5) extending axially longitudinally and diametrically across the cylindrical filter, with the cylinder axis (4) of the filter. An auxiliary surface (9) can be positioned between the radiation source and the adjacent nearer side wall of the filter. Reflected IR radiation (8) can thus be absorbed by the IR absorbing surface, with essentially only UV and visible light radiation passing through the cylindrical filter.