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. 14, 2025
Filed:
Feb. 17, 2021
Sony Group Corporation, Tokyo, JP;
Toshifumi Yasui, Kanagawa, JP;
Yusuke Kono, Kanagawa, JP;
Sony Group Corporation, Tokyo, JP;
Abstract
An illumination apparatus includes a light source, an optical member, and an integrator. The optical member is rotatable around a rotation axis AR. A planar shape of the optical member is annular around the rotation axis AR. A first surface of the optical member is provided with a recessed and protruding portion. Multiple recessed and protruding structure units are consecutively formed on the optical member. Adjacent recessed and protruding structure units are in a mirror symmetry relation, and the recessed and protruding portions of the adjacent recessed and protruding structure units are smoothly connected together. Recessed portions and protruding portions of the recessed and protruding portion of each recessed and protruding structure unit are smoothly connected together. An area occupied by the recessed and protruding portion of each recessed and protruding structure unit is larger in size than incident light from the light surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile