公开(公告)号：US20180267229A1

公开(公告)日：2018-09-20

申请号：US15919827

申请日：2018-03-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hiroyuki SEKII ,  Shinichi ANAMI ,  Osamu TANAHASHI

IPC: F21V8/00

CPC classification number: G02B6/0061 ,  G02B6/0036 ,  G02B6/0068 ,  G02B6/0085

Abstract: A light guide includes: an incident surface onto which light is emitted; a light exit surface which intersects with the incident surface and from which light is emitted; and a facing surface opposite to the light exit surface. The light guide includes a plurality of clusters of diffusion dots which diffuse light, and the plurality of clusters being regularly arranged at least on the facing surface.

公开(公告)号：US20170234509A1

公开(公告)日：2017-08-17

申请号：US15432362

申请日：2017-02-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hiroyuki SEKII ,  Kyohei NAKAMURA

IPC: F21V5/04 ,  F21V7/04

CPC classification number: G02B6/0055 ,  F21S8/04 ,  F21S8/061 ,  F21V23/001 ,  F21Y2107/90 ,  F21Y2115/10 ,  G02B6/0038 ,  G02B6/004 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0078 ,  G02B6/0088

Abstract: A luminaire is provided. A main surface of a light-guiding panel included in the luminaire includes a reflecting area having a plurality of approximately conical recesses. An angle θ formed by a lateral surface of each of the recesses and the main surface of the light-guiding panel satisfies a condition defined by a distance D from a center position of a light source to a center position of the reflecting area, a distance H from an illumination target surface to the center position of the light source, an angle γ which the light-guiding panel forms with a horizontal plane, a refractive index n of the light-guiding panel, and a surface roughness Ra of the lateral surface of each of the recesses.

公开(公告)号：US20160377794A1

公开(公告)日：2016-12-29

申请号：US15184224

申请日：2016-06-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hideharu KAWACHI ,  Shinichi ANAMI ,  Osamu TANAHASHI ,  Hiroyuki SEKII

IPC: F21V8/00 ,  F21V7/00 ,  F21V21/03

CPC classification number: G02B6/0045 ,  F21S8/04 ,  F21V7/0058 ,  F21V7/22 ,  F21V13/02 ,  F21Y2103/10 ,  F21Y2115/10

Abstract: An illumination device includes a light source unit and a light guide plate configured to guide light coming from the light source unit. The light guide plate includes an incidence surface, main emission surfaces from which the light incident on the incidence surface is emitted, and an end emission surface which is opposed to the incidence surface and from which the light is emitted. At least one of the main emission surfaces has a stepped surface which is formed such that the thickness of the light guide plate becomes thinner at a side of the end emission surface than at a side of the incidence surface. The stepped surface is configured to reflect the light in a direction opposite to a light guide direction extending from the incidence surface toward the end emission surface and inclined with respect to the light guide direction.

Abstract translation: 照明装置包括光源单元和被配置为引导来自光源单元的光的导光板。 导光板包括入射表面，入射到入射表面的光的主发射表面和与入射表面相对并从中发射光的末端发射表面。 主发射表面中的至少一个具有台阶表面，其形成为使得导光板的厚度在端部发射表面的侧面比在入射表面的侧面变薄。 阶梯面被配置为将光从与入射面朝向端部发射面延伸的导光方向相反的方向反射，并相对于导光方向倾斜。

公开(公告)号：US20170212294A1

公开(公告)日：2017-07-27

申请号：US15412471

申请日：2017-01-23

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Osamu TANAHASHI ,  Hiroyuki SEKII

IPC: F21V8/00

CPC classification number: G02B6/0045 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0078

Abstract: A light guide includes a front surface. A back surface is opposite the front surface and includes a depression. A light incident surface introduces light. The light reflects off the depression and is emitted through the front surface. The depression includes an inclined side surface that faces the light incident surface. The inclined side surface includes a reflective curved surface that includes at least 50% of a surface area of the inclined side surface. In a cross section view of the depression in a plane substantially orthogonal to the front surface, a first tangent that touches a curved line defining the reflective curved surface of the inclined side surface and a second tangent that touches the curved line in a different location than the first tangent form a first angle that is greater than or equal to 0° and less than or equal to 30°.