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. 26, 2022
Filed:
Mar. 17, 2021
Light flux controlling member, light emitting device, surface light source device and display device
Enplas Corporation, Saitama, JP;
Takuro Momoi, Saitama, JP;
Enplas Corporation, Saitama, JP;
Abstract
A light flux controlling member includes an incidence surface, a reflection surface, an annular groove and an emission surface. The annular groove is disposed so as not to intersect an optical path of light incident on the incidence surface, reflected by the reflection surface, and reaching the emission surface. The first annular surface is formed so that its distance from the central axis increases, from the back side to the front side, and refracts, toward the front surface, light emitted from the light emitting center of the light emitting element, and directly reaching the first annular surface. The second annular surface is formed so that its distance from the central axis increases, from the back side to the front side, and refracts, toward the front side, light emitted from the light emitting element, incident on the incidence surface, and directly reaching the second annular surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile