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:
Sep. 15, 2026
Filed:
May. 17, 2023
Qisda Corporation, Taoyuan City, TW;
Chih-Shiung Chien, Taoyuan City, TW;
Ming-Kuen Lin, Taoyuan City, TW;
Tsung-Hsun Wu, Taoyuan City, TW;
Qisda Corporation, Taoyuan City, TW;
Abstract
An illumination system including a first light-emitting unit, a first reflector, a second light-emitting unit, and a second reflector is provided. The first light-emitting unit is configured to emit a first light beam, and the first reflector is configured to reflect the first light beam toward a first direction. The second light-emitting unit is configured to emit a second light beam, and the second reflector is configured to reflect the second light beam toward the first direction. The first reflector and the second reflector are arranged in a second direction. For a view seeing along the second direction, the first reflector and the second reflector form a cross shape. The second direction is perpendicular to the first direction. A projection apparatus is also provided.