公开(公告)号：US10794566B2

公开(公告)日：2020-10-06

申请号：US15451720

申请日：2017-03-07

申请人： Enplas Corporation

发明人： Yasuyuki Fukuda ,  Kakeru Nakamura

IPC分类号： G09F13/04 ,  F21V5/04 ,  G02F1/13357 ,  F21V3/02 ,  F21Y105/16 ,  F21Y115/10

摘要： A light emitting device includes a light emitting element and a light flux controlling member. The light flux controlling member includes an incidence surface and an emission surface, and is disposed such that, in a cross section of the light emitting device, light emitted at least θ1=81° from a light emission center of the light emitting element is incident on the rear surface of the light flux controlling member, and the emission surface is formed such that, in the cross section of the light emitting device, a curve of a graph with an abscissa of θ1 and an ordinate of θ2 includes an inflection point, wherein θ2 is an angle between a line orthogonal to the optical axis and a tangent to the emission surface at a point P, the point P being an arrival point of light emitted from the light emission center at angle θ1.

公开(公告)号：US10754194B2

公开(公告)日：2020-08-25

申请号：US16499065

申请日：2018-03-27

申请人： ENPLAS CORPORATION

发明人： Kensuke Hiraka ,  Kakeru Nakamura

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

摘要： 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：US10458622B2

公开(公告)日：2019-10-29

申请号：US15534096

申请日：2015-10-20

申请人： Enplas Corporation

发明人： Kakeru Nakamura

IPC分类号： F21V7/04 ,  F21V7/00 ,  G02F1/1335 ,  F21V3/00 ,  G09F13/04 ,  G02B19/00 ,  G02B5/09 ,  F21Y105/16 ,  F21Y115/10

摘要： A reflection member includes at least one polygonal cell having a polygonally-shaped center bottom part in which a light source is disposed, vertex-part inclined surfaces provided so as to correspond to the respective vertexes of the polygonal shape, and side-part inclined surfaces provided between the corresponding vertex-part inclined surfaces, such that an inclination angle α of at least a part of the vertex-part inclined surfaces to the center bottom part is larger than an inclination angle β of the side-part inclined surfaces to the center bottom part.