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. 04, 2025
Filed:
Nov. 09, 2021
Coretronic Corporation, Hsin-Chu, TW;
Chang-Hsuan Chen, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
An illumination system configured to provide an illumination beam is provided. The illumination system includes at least two light-combining modules and a light-homogenizing device. One of the at least two light-combining modules includes a light source module and a focusing lens. The light source module is configured to emit an excitation beam, a focusing lens is located between the light source module and the light-homogenizing device, and the focusing lens is located on a path of the excitation beam. The light-homogenizing device includes a light-entrance surface and a light-exit surface. The light source module is disposed on a spherical surface with the light-entrance surface of the light-homogenizing device as a center of a circle, and the excitation beam from the focusing lens is focused on the light-entrance surface of the light-homogenizing device. A projection apparatus is also provided, and uniformity of projection images of the projection apparatus is satisfactory.