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:
Dec. 10, 2024
Filed:
May. 02, 2022
Fujifilm Corporation, Tokyo, JP;
Yukiko Nagatoshi, Saitama, JP;
Masao Mori, Saitama, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A projection lens having an optical system includes: an incidence lens on which light from an electrooptic element is incident; and an emission lens positioned closest to a magnification side and emits an image toward a projection surface, in which an incidence optical axis of the incidence lens is shifted in a first direction orthogonal to the incidence optical axis with respect to a center of a screen of the electrooptic element, a projection angle, which is an angle of an emission optical axis of the emission lens with respect to the projection surface, is less than 90°, and assuming an effective diameter of the emission lens is DE, a focal length of an entire optical system including the emission lens is f, and a half angle of view of the entire optical system is ω, ω is ≥60°, and a value of PA defined by Expression (1)≥0.1 and ≥7. PA=DE/(f×tan ω) (1).