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. 19, 2021
Filed:
Apr. 15, 2020
Coretronic Corporation, Hsin-Chu, TW;
Haw-Woei Pan, Hsin-Chu, TW;
Chih-Hsien Tsai, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
A projection device includes an illumination system, a light valve, and a projection lens. The illumination system includes a light source, a lens array, a condenser lens, and a wavelength conversion element. The light source is for providing a light beam. The lens array and the condenser lens are disposed on a transmission path of a light beam. The condenser lens is for receiving the light beam passing through the lens array and converting the light beam into a condenser light beam. The wavelength conversion element is for receiving the condenser light beam and converting at least a portion thereof into a converted light beam. The projection device and the illumination system provided by the invention can effectively improve the conversion efficiency of the wavelength conversion element and prevent the wavelength conversion element from damage, and effectively project the converted light beam generated by the wavelength conversion element.