公开(公告)号：US09863604B2

公开(公告)日：2018-01-09

申请号：US15298736

申请日：2016-10-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi Ikeda ,  Masafumi Tanaka ,  Shigekazu Yamagishi ,  Hiroki Sugiyama

IPC: F21V9/16 ,  F21V29/89 ,  F21V13/14 ,  G03B21/20 ,  G02B26/00 ,  F21V7/00 ,  G03B21/00

CPC classification number: F21V9/30 ,  F21V7/00 ,  F21V13/14 ,  F21V29/89 ,  G02B26/008 ,  G03B21/008 ,  G03B21/16 ,  G03B21/204

Abstract: A phosphor wheel includes: a substrate; a light reflection layer disposed on one surface of the substrate; a phosphor layer; and a bonding layer which is located between and bonds the light reflection layer and the phosphor layer, wherein the bonding layer contains a particle which is higher in thermal conductivity than a base material of the bonding layer and higher in light reflectance than the light reflection layer.

公开(公告)号：US20240248385A1

公开(公告)日：2024-07-25

申请号：US18624778

申请日：2024-04-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi Ikeda ,  Yoshiki TANAKA ,  Makoto Maeda ,  Yusaku Nishikawa ,  Manabu Okuno

IPC: G03B21/20 ,  G03B21/14 ,  G03B33/12

CPC classification number: G03B21/2073 ,  G03B21/142 ,  G03B21/2066 ,  G03B33/12

Abstract: A light source device includes: a light source element emitting first light; a first selective reflection element disposed at a position where the first light is incident, the first selective reflection element transmitting a component of first linear polarized light and reflecting a component of second linear polarized light; a second selective reflection element disposed at a position for receiving incident light that has passed through or been reflected by the first selective reflection element, the second selective reflection element transmitting or reflecting the incident light in accordance with a wavelength region; and a first polarization direction conversion element disposed between the first and second selective reflection element, the first polarization direction conversion element converting the first linear polarized light into elliptical polarized light. The first polarization direction conversion element converts the elliptical polarized light reflected by the second selective reflection element into the second linear polarized light.

公开(公告)号：US11513336B2

公开(公告)日：2022-11-29

申请号：US17104417

申请日：2020-11-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusaku Nishikawa ,  Taiki Bessho ,  Yasuto Shiroi ,  Shigekazu Yamagishi ,  Takashi Ikeda

IPC: G02B26/00 ,  G03B21/20

Abstract: A phosphor wheel device includes a motor having a rotation shaft, a phosphor wheel substrate attached to one end side of the rotation shaft, and a balancer fixed to the phosphor wheel substrate. The balancer has at least one opening that is open to an outside of the phosphor wheel device.

公开(公告)号：US10684539B2

公开(公告)日：2020-06-16

申请号：US16128452

申请日：2018-09-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shigekazu Yamagishi ,  Takashi Ikeda ,  Masafumi Tanaka

IPC: G03B21/20 ,  G03B21/16

Abstract: A lighting device of the present disclosure includes: an excitation light source; a phosphor for receiving an excitation light from the excitation light source and emitting a fluorescent light; a spreader for supporting the phosphor; and a reflective layer disposed between the phosphor and the spreader and reflecting the fluorescent light. The phosphor is a plurality of phosphor pieces disposed to be adjacent to each other and having the same characteristic.