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:
Mar. 10, 2026
Filed:
Apr. 14, 2023
Nalux Co., Ltd., Osaka, JP;
Kenta Ishii, Osaka, JP;
Yosuke Sakohira, Osaka, JP;
NALUX CO., LTD., Osaka, JP;
Abstract
The diffusor has a microlens array including microlenses with the bases placed on a plane. Concerning a curved surface of each microlens, the following expressions are satisfied, where in a cross section perpendicular to the plane and containing a straight line passing through the projection point onto the plane of the vertex and maximizing a distance between two points of the straight line on the periphery of the base, coordinate along the straight line, coordinate of the curved surface of the microlens in the direction perpendicular to the plane, the maximum value of the first derivative of z' with respect to x′, the absolute value of the second derivative of z′ with respect to x′ at x′ coordinate of the projection point and the absolute value at x′ coordinate of an end of the straight line are represented respectively by x′, z′, d, D0 and D.0<1and≥2