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:
Mar. 24, 2026
Filed:
Oct. 15, 2021
Barco N.v., Kortrijk, BE;
Dirk Maes, Bissegem, BE;
Dries Jan Doornaert, Wevelgem, BE;
Kurt Albert Callewaert, Oostnieuwkerke, BE;
BARCO N.V., Kortrijk, BE;
Abstract
The invention provides an optical apparatus configured to monitor a state of a diffuser illuminated by a light source, at least one light beam comprising at least one bundle of rays of light exiting the diffuser being for illumination of a transmissive or reflective spatial light modulator of a projector, further comprising a sampler that samples the light beam exiting the diffuser and re-directs the light beam sample towards a detection system, wherein the detection system is coupled to an analyzer that generates a signal when an anomaly is detected in the distribution of the light intensity in a cross-section of the sample of the light beam. It also provides a method of monitoring a state of a diffuser illuminated by a coherent light source.