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公开(公告)号：US11774667B2
公开(公告)日：2023-10-03
申请号：US18106774
申请日：2023-02-07
Applicant: ENPLAS CORPORATION
Inventor： Yuki Fujii
IPC: F21V8/00
CPC classification number: G02B6/0073 , G02B6/003 , G02B6/0025 , G02B6/0031
Abstract: A backlight comprises a plurality of light sources mounted on a mounting substrate in rows; lenses respectively arranged on the light sources; and a reflective sheet disposed on the mounting substrate and provided with through-holes through which the light sources protrude, wherein a first light source spacing of the plurality of light sources in a row direction is set to Px, an inter-row spacing of the plurality of light sources in other direction orthogonal to the row direction is set to Py, a first maximum length of each of the through-holes in the reflective sheet in the row direction is set to a, an inter-row maximum length of each of the through-holes in the reflective sheet in the other direction is set to b, the reflectivity of the reflective sheet is set to a and the reflectivity of the mounting substrate is set to β, the following mathematical formula 1 is satisfied if
P
y
>
Px
:
α
(
P
x
-
a
)
+
β
a
α
(
P
y
-
b
)
+
β
b
·
P
y
P
x
>
0
.
9
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公开(公告)号：US11624950B2
公开(公告)日：2023-04-11
申请号：US17722495
申请日：2022-04-18
Applicant: Enplas Corporation
Inventor： Yuki Fujii
IPC: G02F1/00 , G02F1/1335 , G02F1/13357
Abstract: A light flux controlling member includes a plurality of incidence units disposed in a grid pattern and a plurality of emission units individually disposed between the plurality of incidence units. Each incidence unit includes an incidence surface disposed on a back side of the light flux controlling member, a first reflection surface disposed on a front side of the light flux controlling member at a position facing the light emitting element with the incidence surface placed between the first reflection surface and the light emitting element, and a second reflection surface disposed on the front side of the light flux controlling member at a position facing the side surface of the light flux controlling member with the first reflection surface placed between the second reflection surface and the side surface.
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3.发明授权公开(公告)号：US11567365B2
公开(公告)日：2023-01-31
申请号：US17532176
申请日：2021-11-22
Applicant: Enplas Corporation
Inventor： Yuki Fujii
IPC: G02F1/1335 , G02F1/13357
Abstract: A light flux controlling member includes a plurality of incident units and an emission unit. The incident unit includes an incidence surface and a reflection surface. At least a part of a side surface of the light flux controlling member is configured such that θ2 is smaller than θ1, where L is a line connecting a gravity center G1 of the light flux controlling member and a center G2 of the reflection surface, L1 is a line connecting a center P1 of a light-emitting surface of the light-emitting element and a point P2 on the side surface where light emitted from the center P1, L2 is a line along light emitted from the point P2 to outside, θ1 is an angle between L and L1, and θ2 is an angle between L2 and a line L′ that is parallel to L.
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公开(公告)号：US20220334434A1
公开(公告)日：2022-10-20
申请号：US17722495
申请日：2022-04-18
Applicant: Enplas Corporation
Inventor： Yuki Fujii
IPC: G02F1/1335 , G02F1/13357
Abstract: A light flux controlling member includes a plurality of incidence units disposed in a grid pattern and a plurality of emission units individually disposed between the plurality of incidence units. Each incidence unit includes an incidence surface disposed on a back side of the light flux controlling member, a first reflection surface disposed on a front side of the light flux controlling member at a position facing the light emitting element with the incidence surface placed between the first reflection surface and the light emitting element, and a second reflection surface disposed on the front side of the light flux controlling member at a position facing the side surface of the light flux controlling member with the first reflection surface placed between the second reflection surface and the side surface.
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公开(公告)号：US10302825B2
公开(公告)日：2019-05-28
申请号：US15526589
申请日：2015-10-29
Applicant: Enplas Corporation
Inventor： Yuki Fujii
Abstract: This reflective member comprises a rectangular bottom surface, four inclined planes joined to the four edges of the bottom surface and whereof each is inclined with respect to the bottom surface so as to slope up from the bottom surface, and four planar corner portion inclined planes, whereof each is disposed in such a manner as to link two adjacent inclined planes.
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Patent Agency Ranking
公开(公告)号：US10077882B2
公开(公告)日：2018-09-18
申请号：US15079950
申请日：2016-03-24
Applicant: Enplas Corporation
Inventor： Yuki Fujii
CPC classification number: F21V5/04 , F21V5/00 , F21V5/045 , G02B19/0061 , H01L33/58
Abstract: A light emitting device includes a light emitting element emitting light from a top surface and a side surface, and a light flux controlling member controlling distribution of light emitted therefrom. The light flux controlling member includes a rear surface, an incidence surface, and an emission surface. When opening diameter of recess is φ, maximum length of the light emitting element in plan view is L, and thickness of the light emitting element is t, diameter φ is equal to or more than twice a distance from a point where illuminance of light emitted from the side surface thereof to reach the substrate is maximum in illuminance distribution on the substrate to central axis of the light flux controlling member, and is less than “L+12t.”
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公开(公告)号：US11579488B2
公开(公告)日：2023-02-14
申请号：US17371550
申请日：2021-07-09
Applicant: Enplas Corporation
Inventor： Yuki Fujii , Takao Miyoshi , Hiroshi Takatori , Takuro Momoi
IPC: G02F1/13357 , G02F1/1335
Abstract: A light flux controlling member includes n incidence units for allowing incidence of light emitted from n light emitting elements, respectively; an emission unit disposed between the n incidence units and allowing emission of the light incident on the n incidence units while guiding the light; and a plurality of legs. Each incidence unit includes an incidence surface and a reflection surface reflecting, in a direction along the substrate, the light incident on the incidence surface. The emission unit includes a first emission surface emitting a part of the light from the incidence unit, and a second emission surface disposed so as to face away from the first emission surface and emitting another part of the light from the incidence unit. Each leg is disposed at a position satisfying a predetermined condition.
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公开(公告)号：US10078245B2
公开(公告)日：2018-09-18
申请号：US15409832
申请日：2017-01-19
Applicant: Enplas Corporation
Inventor： Yuki Fujii
IPC: G02F1/1335 , F21V3/02 , F21V13/04 , F21Y105/16 , F21Y115/10 , F21V5/04 , F21V7/00 , F21V7/04
CPC classification number: G02F1/133611 , F21V3/02 , F21V5/04 , F21V7/0091 , F21V7/048 , F21V13/04 , F21Y2105/16 , F21Y2115/10 , G02F1/133603 , G02F1/133606 , G02F2001/133607
Abstract: A light flux controlling member includes an incidence surface, an emission surface, and an annular groove part. The annular groove part includes a first internal surface and a second internal surface. The second internal surface protrudes from a virtual line connecting an outer and inner end portions toward an opening side of the annular groove part; and, when an angle on the annular groove part side of two angles between a tangent to an arbitrary point of the second internal surface and the central axis is an inclination angle at the arbitrary point of the second internal surface in the cross section including the central axis, an inclination angle at the inner end portion is smaller than an inclination angle at the outer end portion, and an inclination angle of the second internal surface increases as a distance from the central axis increases.
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9.发明授权公开(公告)号：US11488547B2
公开(公告)日：2022-11-01
申请号：US17209555
申请日：2021-03-23
Applicant: Enplas Corporation
Inventor： Yuki Fujii
IPC: G09G3/34 , G02F1/13357
Abstract: Provided is light flux controlling member for controlling a distribution of light emitted from a plurality of light emitting elements disposed on a substrate, which includes a plurality of incidence units for allowing incidence of the light emitted from the plurality of light emitting elements, respectively; and an emission unit which emits the light incident on the plurality of incidence units while guiding the light, and which is disposed between the plurality of incidence units in a direction along the substrate. The light flux controlling member has a rectangular shape with rounded corners in plan view, and includes four corner portions and four side portions, and the inclination angle of the corner portions is different from the inclination angle of the side portions.
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10.发明授权公开(公告)号：US11249345B2
公开(公告)日：2022-02-15
申请号：US17361416
申请日：2021-06-29
Applicant: Enplas Corporation
Inventor： Yuki Fujii
IPC: G02F1/1335 , H01L25/075 , G02F1/13357 , H01L33/58 , H01L33/50
Abstract: Condition 1 (an absolute value of a difference between IB×B and EB×B is 55% or smaller) and condition 2 (an absolute value of a difference between IY×Y and EY×Y is 55% or smaller) are satisfied, where, when an area of the light-emitting surface is equally divided into inner and outer regions by a boundary line as an outer edge of a region similar in shape to the light-emitting surface in plan view of a white LED package, IB (%) is an area ratio of blue LED chips in the inner region; IY (%) is an area ratio of the region where no blue LED chips is disposed in the inner region; EB (%) is an area ratio of the blue LED chips in the outer region; and EY (%) is an area ratio of the region where no blue LED chip is disposed in the outer region.
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