公开(公告)号：US10754194B2

公开(公告)日：2020-08-25

申请号：US16499065

申请日：2018-03-27

Applicant: ENPLAS CORPORATION

Inventor： Kensuke Hiraka ,  Kakeru Nakamura

IPC: F21V17/06 ,  G02F1/13357 ,  F21V5/00

Abstract: The present invention provides a lens (i.e., luminous flux control member) for an optical element of a backlight, capable of easily aligning the orientation in the plane direction. The luminous flux control member according to the present invention includes a lens main body and legs. The lens main body includes a light-entering area for light emitted from a light-emitting element to enter on the lower surface side and a light-emitting area for emitting the light entered from the light-entering area to the outside on the upper surface side. The legs are legs for mounting the luminous flux control member on a substrate on which the light-emitting element is mounted and are disposed on the lower surface of the lens main body so as to project downward. The luminous flux control member satisfies the following condition 1 or 2: (Condition 1) at least one of the legs is accommodated in one of two grooves having different widths, and all of the other legs are accommodated in the other groove only when the lens main body is oriented in one predetermined direction or an opposite direction thereto; and (Condition 2) the lens main body or all of the legs are accommodated in one groove only when the lens main body is oriented in one predetermined direction or an opposite direction thereto.

公开(公告)号：US10133118B2

公开(公告)日：2018-11-20

申请号：US15129457

申请日：2015-02-27

Applicant: Enplas Corporation

Inventor： Kensuke Hiraka

IPC: G02F1/1335

Abstract: This light flux control member comprises an entry surface, a reflective surface, a circular groove containing a first circular surface and a second circular surface, and an exit surface. The circular groove is disposed in such a manner as not to intersect with the optical path of a light from the entry surface to the reflective surface, and, in such a manner as to intersect with at least a portion of the optical path of a light, from being emitted from a point other than the center of the light-emitting element, entering at the entry surface and being reflected at the reflective surface, to reaching the exit surface. The second circular surface is formed in such a manner that the width of the circular groove widens as the opening ridges of the circular groove is approached from the valley portion of the circular groove.

公开(公告)号：US10718974B2

公开(公告)日：2020-07-21

申请号：US16490660

申请日：2018-02-28

Applicant: Enplas Corporation

Inventor： Kensuke Hiraka

IPC: G02F1/13357 ,  G02B3/04

Abstract: A planar light source device having a plurality of light emission devices and a light diffusion plate. For each of the light emission devices, the light beam from among light beams satisfying θ3/θ1

公开(公告)号：US09477116B2

公开(公告)日：2016-10-25

申请号：US14657074

申请日：2015-03-13

Applicant: Enplas Corporation

Inventor： Kensuke Hiraka

IPC: G02F1/335 ,  G02F1/1335 ,  G02B19/00 ,  G02B5/02

CPC classification number: G02F1/133603 ,  G02B5/0278 ,  G02B19/0028 ,  G02B19/0066 ,  G02F1/133611 ,  G02F2001/133607

Abstract: A light emitting device comprises a light emitting element and a light flux controlling member configured to control the distribution of light emitted from the light emitting element. The light flux controlling member comprises an incidence surface including an outer incidence surface including an inclining surface formed such that the distance from the light emitting element increases as the distance from the optical axis of the light emitted from the light emitting element increases and an inner incidence surface, a reflection surface disposed on a side of the light flux controlling member opposite to the incidence surface, and a emission surface disposed to surround the optical axis. Light emitted from the light emitting surface center of the light emitting element does not reach the inclining surface.

Abstract translation: 发光装置包括发光元件和被配置为控制从发光元件发射的光的分布的光束控制构件。 光束控制构件包括入射表面，该入射表面包括外部入射表面，该入射表面包括倾斜表面，所述倾斜表面形成为使得距发光元件的距离随着从发光元件发射的光的光轴的距离增加而增加， 表面，设置在与入射面相对的光束控制构件的一侧的反射面，以及设置成围绕光轴的发射面。 从发光元件的发光表面中心发射的光不到达倾斜面。

公开(公告)号：US11768339B2

公开(公告)日：2023-09-26

申请号：US17748155

申请日：2022-05-19

Applicant: Enplas Corporation

Inventor： Kensuke Hiraka ,  Honoka Nara ,  Ayano Hinata

IPC: H04B10/00 ,  G02B6/42

CPC classification number: G02B6/4243 ,  G02B6/4262

Abstract: An optical receptacle includes an optical receptacle main body and a cylindrical fixing member. The optical receptacle main body includes a first optical surface, a second optical surface, and an annular groove disposed to surround a first central axis of the first optical surface or disposed to surround a second central axis of the second optical surface. The fixing member is configured with a material with a smaller linear expansion coefficient than that of the optical receptacle main body, and is fit to the groove so as to be in contact with at least a part of an inner surface of the groove.

公开(公告)号：US10466533B2

公开(公告)日：2019-11-05

申请号：US15765520

申请日：2016-10-03

Applicant: Enplas Corporation

Inventor： Kensuke Hiraka

IPC: F21V5/00 ,  F21V5/04 ,  G02F1/1335 ,  F21S2/00 ,  G02B19/00 ,  H01L33/58 ,  G02B5/02 ,  H01L25/075

Abstract: This light flux control member has an incidence surface and an emission surface. The emission surface includes a first emission surface projecting toward the back side and disposed so as to cross the central axis, and a second emission surface projecting toward the front side and disposed so as to surround the first emission surface. When the light-emitting element is disposed so as to face the recessed part such that a light emission center thereof is located on the central axis, and a surface to be irradiated is disposed above the emission surface so as to lie at right angles to the central axis, a second maximum value calculated by a predetermined expression is larger than a first maximum value calculated by a predetermined expression.