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:
Jun. 07, 2016
Filed:
Jul. 01, 2012
Patrick C. Candry, Harelbeke, BE;
Bart H. J. Maximus, Oudenaarde, BE;
Patrick C. Candry, Harelbeke, BE;
Bart H. J. Maximus, Oudenaarde, BE;
Barco N.V., Kortrijk, BE;
Abstract
Projector methods, devices, software are described for a high decrease of the black level without decrease or a limited decrease of the luminance of the bright pixels for use with high contrast and high dynamic range projectors, e.g. based on RGB lasers or phosphor converted lasers. Such projectors can be used in a digital cinema, in a home theatre, in virtual reality systems, in simulators for training, for example. The projector optical system is adapted to vary, according to an average picture level, an effective étendue of the light source and to keep light power confined within a varying cone angle, whereby at the imaging system the projector étendue is matched to the effective étendue of the light source, the effective light source étendue and the projector étendue being controlled to the average picture level.