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. 12, 2019
Filed:
Apr. 10, 2019
Coretronic Corporation, Hsin-Chu, TW;
Chang-Hsuan Chen, Hsin-Chu, TW;
Chien-Chung Liao, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
An illumination system includes a first exciting light source, a second exciting light source and a wavelength-converting wheel. The first exciting light source provides a first exciting beam. The second exciting light source provides a second exciting beam. The wavelength-converting wheel is disposed on a transmission path of the first exciting beam and the second exciting beam. The wavelength-converting wheel has a first annular irradiation portion and a second annular irradiation portion. The first annular irradiation portion has a first light reflecting region and a first light converting region. The second annular irradiation portion has a second light reflecting region and a second light converting region. The invention further provides a control unit and a projection apparatus. The invention can adjust the color proportion of the illumination beam projected by the illumination system, and reduce the volume of the illumination system and the number of optical components.