公开(公告)号：US20180313998A1

公开(公告)日：2018-11-01

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 ,  F21S43/247 ,  F21S43/245 ,  F21S43/237 ,  F21S43/00

CPC classification number: G02B6/0036 ,  F21S43/00 ,  F21S43/237 ,  F21S43/245 ,  F21S43/247 ,  G02B6/00 ,  G02B6/0031 ,  G02B6/0038

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：US20250036077A1

公开(公告)日：2025-01-30

申请号：US18912677

申请日：2024-10-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YOSUKE ARAKI ,  ATSUSHI FUKUI ,  WAHEI AGEMIZU ,  KAZUMASA TAKATA ,  KENICHIRO MASE

IPC: G03H1/02 ,  G03H1/20

Abstract: A hologram manufacturing device includes a master hologram on which a diffraction grating is formed, a duplicate hologram disposed close to the master hologram, a first light source that emits, to the master hologram and the duplicate hologram, a first laser light that satisfies a Bragg diffraction condition in the diffraction grating, a second light source that emits, to the master hologram and the duplicate hologram, a second laser light that does not satisfy the Bragg diffraction condition in the diffraction grating, and a sensor that measures the second laser light. The hologram manufacturing device ends exposure of the duplicate hologram with the first laser light based on a measurement result of the sensor.

公开(公告)号：US20250093013A1

公开(公告)日：2025-03-20

申请号：US18961663

申请日：2024-11-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KENICHIRO MASE

IPC: F21V5/00 ,  F21V11/14

Abstract: A lighting device that emits light to a lighting target surface and includes a light source, and a lens having an incident surface that receives light emitted from the light source and an emission surface that emits the light received by the incident surface. The emission surface is a convex curved surface. The curvature of the emission surface along a first direction perpendicular to an optical axis direction of the lens is smaller than the curvature of the emission surface along a second direction perpendicular to the optical axis direction and the first direction.

公开(公告)号：US20170219761A1

公开(公告)日：2017-08-03

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: F21V8/00

CPC classification number: G02B6/0036 ,  F21S43/00 ,  F21S43/237 ,  F21S43/245 ,  F21S43/247 ,  G02B6/00 ,  G02B6/0031 ,  G02B6/0038

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.

公开(公告)号：US20170205557A1

公开(公告)日：2017-07-20

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

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.