公开(公告)号：US11226547B2

公开(公告)日：2022-01-18

申请号：US16815024

申请日：2020-03-11

Applicant: DELTA ELECTRONICS, INC.

Inventor： Li-Cheng Yang

IPC: G03B21/20 ,  G02B26/00

Abstract: A phosphor wheel includes a substrate and a luminescence layer. The luminescence layer is disposed on the substrate and includes a glue layer, a plurality of scattering particles, and a plurality of first photoluminescence particles. The scattering particles and the first photoluminescence particles are collectively distributed in the glue layer. At least one of the scattering particles is located between the substrate and at least one of the first photoluminescence particles, and at least another of the first photoluminescence particles is located between the substrate and at least another of the scattering particles.

公开(公告)号：US20210098662A1

公开(公告)日：2021-04-01

申请号：US16861051

申请日：2020-04-28

Applicant: Delta Electronics, Inc.

Inventor： Jih-Chi Li ,  Li-Cheng Yang

IPC: H01L33/50 ,  H01L33/64 ,  C09K11/77 ,  F21K9/64 ,  G02B26/00 ,  G03B21/20

Abstract: A wavelength conversion device includes a wavelength conversion plate, a reflective layer, a driving component and a thermal conductive layer. The wavelength conversion plate includes a lateral edge, at least one surface and a conversion region. The reflective layer is disposed on the surface of the wavelength conversion plate. The driving component is disposed near the lateral edge of the wavelength conversion plate and configured to displace the wavelength conversion plate. The thermal conductive layer is disposed on the surface of the wavelength conversion plate and thermally connected to the conversion region for conducting heat generated by the conversion region during a wavelength conversion. By disposing the thermal conductive layer on the surface of the wavelength conversion plate, the thermal conductive layer is thermally directly connected to the conversion region, so that the heat generated at the conversion region during the wavelength conversion is efficiently dissipated.

公开(公告)号：US11552224B2

公开(公告)日：2023-01-10

申请号：US16861051

申请日：2020-04-28

Applicant: Delta Electronics, Inc.

Inventor： Jih-Chi Li ,  Li-Cheng Yang

IPC: H01L33/50 ,  H01L33/64 ,  G03B21/20 ,  F21K9/64 ,  G02B26/00 ,  C09K11/77

Abstract: A wavelength conversion device includes a wavelength conversion plate, a reflective layer, a driving component and a thermal conductive layer. The wavelength conversion plate includes a lateral edge, at least one surface and a conversion region. The reflective layer is disposed on the surface of the wavelength conversion plate. The driving component is disposed near the lateral edge of the wavelength conversion plate and configured to displace the wavelength conversion plate. The thermal conductive layer is disposed on the surface of the wavelength conversion plate and thermally connected to the conversion region for conducting heat generated by the conversion region during a wavelength conversion. By disposing the thermal conductive layer on the surface of the wavelength conversion plate, the thermal conductive layer is thermally directly connected to the conversion region, so that the heat generated at the conversion region during the wavelength conversion is efficiently dissipated.

公开(公告)号：US11287730B2

公开(公告)日：2022-03-29

申请号：US17144166

申请日：2021-01-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Po-Tsun Kuo ,  Yen-I Chou ,  Li-Cheng Yang

IPC: G03B21/20

Abstract: A wavelength device includes a substrate, a photoluminescence layer, a light spot adjusting layer, and a reflecting layer. The photoluminescence layer is disposed over the substrate, and is configured to receive incident light and convert the incident light to excitation light. The light spot adjusting layer is disposed between the substrate and the photoluminescence layer, and is configured to receive the excitation light and the unconverted incident light and to adjust the light path of the excitation light and the unconverted incident light, in which a refractive index of the photoluminescence layer is different from a refractive index of the light spot adjusting layer. The reflecting layer is disposed between the light spot adjusting layer, and is configured to reflect the incident light and the excitation light.

公开(公告)号：US20190270116A1

公开(公告)日：2019-09-05

申请号：US16391158

申请日：2019-04-22

Applicant: DELTA ELECTRONICS, INC.

Inventor： Keh-Su Chang ,  Jih-Chi Li ,  Li-Cheng Yang

IPC: B05D5/06 ,  F21V13/08 ,  H04N9/31 ,  F21V9/30 ,  G03B21/20 ,  F21V9/08

Abstract: A phosphor device of an illumination system emitting a first waveband light includes a substrate and a phosphor layer formed on the substrate. The phosphor layer includes a first phosphor agent and a second phosphor agent. The first waveband light is converted into a first color light by the first phosphor agent. The second phosphor agent is distributed over the first phosphor agent and mixed with the first phosphor agent, and the first waveband light is converted into a second color light by the second phosphor agent. The first color light and the second color light are integrated into the second waveband light. The difference between the first wavelength peak of the first color light and the second wavelength peak of the second color light is 50 to 100 nanometers. Therefore, the advantages of increasing the purity, the luminance and the luminous intensity of specific color light are achieved.

公开(公告)号：US11422360B2

公开(公告)日：2022-08-23

申请号：US17005335

申请日：2020-08-28

Applicant: DELTA ELECTRONICS, INC.

Inventor： Jih-Chi Li ,  Wen-Cheng Huang ,  Li-Cheng Yang

IPC: G02B26/00 ,  G03B21/20 ,  F21V8/00

Abstract: A wavelength conversion element includes a base plate and a rotating device. The base plate has a first surface and a second surface. The first surface is configured to allow a fluorescent layer to dispose on. The base plate includes some first grooves and some second grooves. The first grooves are disposed on the first surface around a center of the base plate. The second grooves are disposed on the second surface around the center. The first grooves and the second grooves are staggered from each other along a rotating direction. The base plate has some through holes. Each of the through holes communicates with the second surface and the corresponding first groove. The rotating device is connected with the base plate and configured to drive the base plate to rotate about an axis along the rotating direction. The axis passes through the center.

公开(公告)号：US10688527B2

公开(公告)日：2020-06-23

申请号：US16391158

申请日：2019-04-22

Applicant: DELTA ELECTRONICS, INC.

Inventor： Keh-Su Chang ,  Jih-Chi Li ,  Li-Cheng Yang

IPC: F21V9/08 ,  B05D5/06 ,  F21V13/08 ,  H04N9/31 ,  G03B21/20 ,  F21V9/30 ,  F21V9/38

Abstract: A phosphor device of an illumination system emitting a first waveband light includes a substrate and a phosphor layer formed on the substrate. The phosphor layer includes a first phosphor agent and a second phosphor agent. The first waveband light is converted into a first color light by the first phosphor agent. The second phosphor agent is distributed over the first phosphor agent and mixed with the first phosphor agent, and the first waveband light is converted into a second color light by the second phosphor agent. The first color light and the second color light are integrated into the second waveband light. The difference between the first wavelength peak of the first color light and the second wavelength peak of the second color light is 50 to 100 nanometers. Therefore, the advantages of increasing the purity, the luminance and the luminous intensity of specific color light are achieved.

公开(公告)号：US11549055B2

公开(公告)日：2023-01-10

申请号：US16924156

申请日：2020-07-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Li-Cheng Yang ,  Jih-Chi Li

IPC: C09K11/02 ,  C08K3/36 ,  C08K3/22 ,  C08K3/38 ,  G03B21/20 ,  G02B26/00 ,  C08G77/04 ,  C08G77/00

Abstract: A wavelength converting includes a diffused-reflecting layer, a substrate, a photoluminescence layer, and a binder. The diffused-reflecting layer has a first surface and a second surface facing away from each other. The substrate is over the first surface of the diffused-reflecting layer. The photoluminescence layer is over the second surface of the diffused-reflecting layer. The binder is mixed at least in the photoluminescence layer or at least in the diffused-reflecting layer, the binder includes a structural unit represented by formula (1), and a characteristic absorption band in a Fourier-Transform Infrared (FTIR) Spectrum of silicon-oxygen-silicon bonds (Si—O—Si bonds) in the binder is from 900 cm−1 to 1250 cm−1, in which R represents an aromatic group.

公开(公告)号：US11320570B2

公开(公告)日：2022-05-03

申请号：US17100959

申请日：2020-11-23

Applicant: DELTA ELECTRONICS, INC.

Inventor： Jih-Chi Li ,  Li-Cheng Yang ,  Wen-Cheng Huang

IPC: G03B21/20 ,  G02B5/02 ,  C08L83/04

Abstract: A wavelength converting device includes a diffused-reflecting layer, a substrate, and a photoluminescence layer. The diffused-reflecting layer has a first surface and a second surface facing away from the first surface, and the diffused-reflecting layer includes a hydrophilic binder and a lipophilic binder. The substrate is on the first surface of the diffused-reflecting layer. The photoluminescence layer is on the second surface of the diffused-reflecting layer.