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    Planar light source device and display device
    1.
    发明授权
    Planar light source device and display device 有权

    公开(公告)号：US11022842B2

    公开(公告)日：2021-06-01

    申请号：US16650386

    申请日：2017-12-05

    Applicant: Enplas Corporation

    Inventor： Ryo Nonaka ,  Kyouhei Yamada

    IPC: G02F1/13357

    Abstract: A planar light source device has: a housing, a substrate, a plurality of light-emitting devices each having a light-emitting element and a light-beam control member; and a light diffusing member. The housing has: a bottom surface and two inclined surfaces. In the light distribution characteristics of a light-emitting device, a light ray with the largest angle relative to the optical axis in an angular range within which a luminous intensity equal to or more than 70% of the maximum luminous intensity is exhibited reaches the inclined surfaces. A first angle between the optical axis of the light-emitting element and a light ray having the maximum luminous intensity emitted from the light-emitting device is larger than a second angle between the optical axis of the light-emitting element and a straight line connecting the luminescence center of the light-emitting element to the opening-side end portion of the housing.

    Light flux controlling member, light emitting device and illuminating device
    2.
    发明授权
    Light flux controlling member, light emitting device and illuminating device 有权

    公开(公告)号：US10190730B2

    公开(公告)日：2019-01-29

    申请号：US15572275

    申请日：2016-04-21

    Applicant: Enplas Corporation

    Inventor： Kyouhei Yamada ,  Akinobu Seki ,  Masayo Takizawa

    IPC: F21K9/237 ,  F21K9/232 ,  F21K9/235 ,  F21V3/00 ,  F21V5/04 ,  F21K9/69 ,  F21Y115/10 ,  F21V3/04 ,  F21Y103/33

    Abstract: A light beam control member according to the present invention comprises: an incidence surface including a first incidence surface arranged spaced apart from a center axis, and a second incidence surface arranged by surrounding the first incidence surface; an upper total reflection surface arranged opposite the incidence surface, and causing the light incident on the incidence surface to reflect in a direction away from the center axis; a lower total reflection surface arranged between the center axis and the first incidence surface and surrounding the center axis, and causing part of the light incident on the first incidence surface to reflect toward the upper total reflection surface; and an emission surface arranged outside the upper total reflection surface and surrounding the center axis, and causing the light reflected from the upper total reflection surface to be emitted to the outside.

    Light emitting device having luminous flux control member with recess radially distant from a light incident surface
    4.
    发明授权
    Light emitting device having luminous flux control member with recess radially distant from a light incident surface 有权

    公开(公告)号：US11079628B2

    公开(公告)日：2021-08-03

    申请号：US16640379

    申请日：2018-08-15

    Applicant: Enplas Corporation

    Inventor： Kyouhei Yamada ,  Masayo Takizawa

    IPC: F21V5/04 ,  G02F1/13357 ,  G02F1/1335

    Abstract: A light emitting device has a light emitter defining an optical axis; and a luminous flux control member with an incident surface in a back surface and intersecting the optical axis, a reflection surface opposite the back surface, an emission surface connecting the back surface to the reflection surface, and a first recessed portion formed on the back surface farther from the optical axis than the incident surface and having a first inclined surface closer to the reflection surface with increasing distance from the optical axis, a front end of the first inclined surface such that a substantial portion of light emitted from the center region of the light emitter and reflected by the reflection surface do not strike the first inclined surface, and such that a substantial portion of light emitted from the light emitter and not reflected by the reflection surface strikes the first inclined surface.

    Light flux control member, light emitting device, and a surface light source device
    5.
    发明授权
    Light flux control member, light emitting device, and a surface light source device 有权

    公开(公告)号：US10802338B2

    公开(公告)日：2020-10-13

    申请号：US16495996

    申请日：2018-03-20

    Applicant: Enplas Corporation

    Inventor： Kyouhei Yamada

    IPC: G02F1/13357 ,  G09G3/34 ,  F21V5/08 ,  F21V5/04

    Abstract: A light flux control member has: a rear surface extending in the Y-axis direction; and a first incident plane, a second incident plane, and a third incident plane disposed on the rear surface side, said third incident plane reflecting light incident to the first incident plane. The light flux control member further has: a first reflecting plane disposed on the front side and reflecting, to one direction in the Y-axis direction, light incident to the first incident plane, light incident to the first incident plane and reflected on the third incident plane, and light incident to the third incident plane; and a second reflecting plane for reflecting light incident to the second incident plane to the other direction in the Y-axis direction. The light flux control member still further has two exit planes disposed sandwiching the first reflecting plane and the second reflecting plane and facing each other.

    Light flux control member, light-emitting device, and illumination device
    7.
    发明授权
    Light flux control member, light-emitting device, and illumination device 有权

    公开(公告)号：US10018330B2

    公开(公告)日：2018-07-10

    申请号：US15509295

    申请日：2015-06-24

    Applicant: Enplas Corporation

    Inventor： Kyouhei Yamada

    IPC: F21V13/04 ,  F21V5/00 ,  F21V7/00 ,  F21V3/02 ,  F21Y115/10

    CPC classification number: F21V13/04 ,  F21S2/00 ,  F21V3/02 ,  F21V5/00 ,  F21V5/02 ,  F21V5/04 ,  F21V7/00 ,  F21V7/0091 ,  F21Y2103/10 ,  F21Y2115/10

    Abstract: This light flux control member comprises: two entry surfaces disposed on two sides of a virtual plane serving as a boundary and containing the optical axis of the light-emitting element; a first protruding strip disposed between the two entry surfaces and along the virtual plane, into which light that has exited the light-emitting element enters; two total reflection surfaces, each formed at a position facing the light-emitting element with one of the entry surfaces sandwiched therebetween; two light-guide portions disposed at opposite positions with the first protruding strip sandwiched therebetween; and an exit surface formed on the external surface of each of the light-guide portions. A second light flux control member is disposed so as to cover the first protruding strip and includes a diffuse transmission portion whereby light that has entered and exited the first protruding strip is transmitted while being diffused.

    ILLUMINATION DEVICE
    8.
    发明申请
    ILLUMINATION DEVICE 审中-公开
    照明装置

    公开(公告)号：US20140376217A1

    公开(公告)日：2014-12-25

    申请号：US14372463

    申请日：2013-01-17

    Applicant: Enplas Corporation

    Inventor： Kyouhei Yamada ,  Noriyuki Kawahara

    IPC: F21K99/00

    CPC classification number: F21V3/049 ,  F21K9/61 ,  F21V3/02 ,  F21V5/02 ,  F21V29/70 ,  F21V2200/15 ,  F21Y2103/00 ,  F21Y2115/10 ,  G02B6/001 ,  G02B6/003

    Abstract: An illuminating apparatus (100) has: a light source unit (140), which includes a light emitting element (110), and a luminous flux control member (120); a columnar light guide rod (160), which is composed of a transparent material; and a cover (170), which is disposed to cover the light source unit (140) and the light guide rod (160), said cover being disposed with respect to the light source unit (140) and the light guide rod (160) with an air layer therebetween. The light source unit (140) is disposed such that an output surface (126) of the luminous flux control member (120) faces an end surface (162) of the light guide rod (160).

    Abstract translation: 照明装置（100）具有：包括发光元件（110）的光源单元（140）和光束控制构件（120）; 由透明材料构成的柱状导光杆（160） 以及覆盖光源单元（140）和导光杆（160）的盖（170），所述盖相对于光源单元（140）和导光杆（160）设置， 其间具有空气层。 光源单元（140）被布置成使得光束控制构件（120）的输出表面（126）面对导光杆（160）的端面（162）。

    LUMINOUS FLUX CONTROL MEMBER, LIGHT EMITTING APPARATUS, AND ILLUMINATING APPARATUS
    9.
    发明申请
    LUMINOUS FLUX CONTROL MEMBER, LIGHT EMITTING APPARATUS, AND ILLUMINATING APPARATUS 有权
    发光管控制器，发光装置和照明装置

    公开(公告)号：US20150070930A1

    公开(公告)日：2015-03-12

    申请号：US14394856

    申请日：2013-04-16

    Applicant: Enplas Corporation

    Inventor： Kyouhei Yamada ,  Noriyuki Kawahara

    IPC: F21V8/00

    CPC classification number: G02B6/0031 ,  F21K9/27 ,  F21K9/60 ,  F21K9/61 ,  F21S4/20 ,  F21V5/00 ,  F21V5/04 ,  F21Y2103/10 ,  F21Y2115/10 ,  G02B5/02 ,  G02B6/0018 ,  G02B6/0021 ,  G02B6/0051 ,  G02B6/0058 ,  G02B6/0078 ,  G02B17/08 ,  G02B19/0066 ,  H01L33/58

    Abstract: A luminous flux control member (200) of the present invention has: a light input surface (210); total reflection surfaces (220), which are formed at positions facing a light emitting element with the light input surface (210) therebetween; two light guide sections (230), which are formed such that respective cross-sectional areas thereof are reduced in the direction to be away from the light input surface (210) and the total reflection surface (220), said light guide sections being formed at facing positions with the light input surface (210) and the total reflection surface (220) therebetween; and two light output surfaces (240), which are formed on the outer surfaces of the two light guide sections (230), respectively.

    Abstract translation: 本发明的光束控制部件（200）具有：光输入面（210）; 全反射表面（220），其形成在面对发光元件的位置处的光输入表面（210）之间; 两个导光部分（230）形成为使其各个横截面面积在远离光输入表面（210）和全反射表面（220）的方向上减小，所述导光部分形成 在其间具有光输入表面（210）和全反射表面（220）的面对位置; 和两个光输出表面（240），它们分别形成在两个导光部分（230）的外表面上。

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