公开(公告)号：US10073209B2

公开(公告)日：2018-09-11

申请号：US15327655

申请日：2016-04-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenichiro Mase ,  Sadafumi Oota

IPC: F21V8/00 ,  F21S2/00

CPC classification number: G02B6/0038 ,  F21S2/00 ,  G02B6/003 ,  G02B6/005 ,  G02B6/0055

Abstract: An object of the present disclosure is to provide a surface light source lighting device capable of realizing direction control and a stable operation with respect to vibration or a great temperature change, required for use in a backlight. This surface light source lighting device causes linear light incident from a light source (2a) to be incident to an edge surface (1L) of a light guide plate (1) via a light incidence portion (3a) including a light incidence lens and a louver, and can thus maintain high reliability with respect to vibration or a temperature change in a use environment. In the light guide plate (1), light reflected by a first light guide pattern (4A) provided on a rear surface thereof is reflected by a second light guide pattern (4B) provided on the same rear surface so that an emission direction is set, and thus light is emitted from a front surface of the light guide plate (1) with desired distribution characteristics.

公开(公告)号：US10753564B2

公开(公告)日：2020-08-25

申请号：US16207242

申请日：2018-12-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshinori Sakamoto ,  Kenichiro Mase ,  Takashi Matsuda

IPC: F21S41/20 ,  F21S41/32 ,  F21S41/143 ,  F21S41/255 ,  F21S41/663 ,  F21S41/147 ,  F21S41/275 ,  F21W102/13

Abstract: A vehicle headlamp includes a projection lens, a first lens, a second lens, a first light source, and a second light source. The first lens and the second lens are behind the projection lens. The first light source is behind the first lens. The second light source is behind the second lens. The first lens and the second lens deviate from an optical axis of the projection lens and are opposite to each other.

公开(公告)号：US10324246B2

公开(公告)日：2019-06-18

申请号：US16029208

申请日：2018-07-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsushi Fukui ,  Tomohisa Sakaguchi ,  Kenichiro Mase

IPC: F21V8/00 ,  G02B6/00 ,  F21S43/00 ,  F21S43/237 ,  F21S43/245 ,  F21S43/247

Abstract: There is provided a light guide body, containing: a first end region; a second end region located on an opposite side of the first end region; first dots; and second dots having a dot in the first end region being smaller than a dot in the second end region, wherein a size difference between the first dots and the second dots in the first end region is smaller than a size difference between the first dots and the second dots in the second end region.

公开(公告)号：US10025019B2

公开(公告)日：2018-07-17

申请号：US15328016

申请日：2016-05-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsushi Fukui ,  Tomohisa Sakaguchi ,  Kenichiro Mase

IPC: F21V7/04 ,  F21V8/00

Abstract: To easily increase display quality of light even in a case of a long light guide body. Depth h1 of a first dot (106) is larger than depth h2 of a second dot (108) in the vicinity of a light source, and, as a location comes closer to an end on an opposite side to the light source, depth h1 of the first dot (106) is reduced, and depth h2 of the second dot (108) is increased. Therefore, it is possible to easily increase display quality of light even in a case of a long light guide body.