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:
Oct. 21, 2008
Filed:
Sep. 14, 2004
Koen Malfait, Otegem, BE;
Rik Defever, Kuurne, BE;
Koen Malfait, Otegem, BE;
Rik Defever, Kuurne, BE;
Barco N.V., Kortrijk, BE;
Abstract
A dimming system () for dimming electromagnetic radiation intensity of a radiating unit, such as e.g., an optical system. The dimming system () is adjusted to provide a constant electromagnetic radiation intensity over the cross-section of the impinging electromagnetic radiation beam by providing at least two dimming units () each having a spatially variable position-dependent dimming behavior, such that the degree of dimming for the whole cross-section can be chosen to be a fixed selectable dimming factor. The dimming units () may be based on spatially variable position-dependent dimming devices based on transparent substrates having a coating with a position-dependent varying transmission/reflection coefficient, on spatially variable position-dependent diffusing devices or on polarizer devices.