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:
Apr. 07, 2026
Filed:
Mar. 10, 2025
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Takeo Matsushima, Tokyo, JP;
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Some parameters are defined that a focal length of the condensing optical system is f, a width orthogonal to an optical axis and having a maximum width of the collimating optical system is b, an axis coinciding with a line segment constituting the width b is an axis B, a width of a projection image on an axis optically equivalent to the axis B is a, the projection image being on a light emitting surface on a back focus surface of the condensing optical system, and a separation distance between an incident surface of the fly eye lens and a back focus of the condensing optical system is L, the light source device satisfies a predetermined formula.