公开(公告)号：US20240045116A1

公开(公告)日：2024-02-08

申请号：US17817773

申请日：2022-08-05

Applicant: Enplas Corporation

Inventor： Takahiro IZAWA ,  Satoshi OSHIMA

IPC: G02B3/08 ,  G02B6/42

CPC classification number: G02B3/08 ,  G02B6/4206

Abstract: The present invention provides a light flux controlling member that can determine the center of a lens surface (light flux control surface) that does not have a circular outer edge in plan view. A light flux controlling member of the present invention includes: a light flux control surface including an outer edge with a shape that is drawn by a point A when a straight line connecting a point O and the point A is rotated 360 degrees or more clockwise or counterclockwise around the point O while a length of the straight line is gradually increased in plan view; and a center determination mark disposed outside of the light flux control surface and on a circle around the point O in plan view.

公开(公告)号：US20240402398A1

公开(公告)日：2024-12-05

申请号：US18672108

申请日：2024-05-23

Applicant: Enplas Corporation

Inventor： Takahiro IZAWA ,  Yuki SAITO ,  Satoshi OSHIMA

IPC: G02B3/08 ,  B29D11/00 ,  G02B5/30 ,  G02B27/09

Abstract: A light flux controlling member of the present invention includes: a vortex surface including a plurality of phase control surfaces having a vortex shape around a central axis and radially divided with the central axis at a center, and a plurality of step surfaces each configured to connect end portions of adjacent two phase control surfaces of the plurality of phase control surfaces. Upper sides of the plurality of step surfaces intersect each other at a center portion of the vortex surface. In side view, a curve extending from the center portion toward an outer periphery part of the vortex surface has an inflection point at the center portion of the vortex surface.