公开(公告)号：US12099182B2

公开(公告)日：2024-09-24

申请号：US17415459

申请日：2019-11-18

Applicant: APPOTRONICS CORPORATION LIMITED

Inventor： Dayan Dai ,  Hao Zhou ,  Xia Song ,  Yi Li

IPC: G02B26/00 ,  G03B21/20 ,  H04N9/31

CPC classification number: G02B26/008 ,  G03B21/204 ,  G03B21/2066 ,  H04N9/3114 ,  H04N9/3164

Abstract: Provided is a color wheel. The color wheel includes a substrate, a conversion layer disposed on the substrate for wavelength conversion of incident light and obtaining irradiated laser, a first filter layer for filtering the irradiated laser to obtain a first light for modulating an image in a first color gamut range, and a second filter layer for filtering the irradiated laser to obtain a second light for modulating an image in a second color gamut range. Planes, in which the light incident surface of the conversion layer, the light incident surface of the first filter layer and the light incident surface of the second filter layer are located respectively, are parallel or coincide with each other.

公开(公告)号：US11822052B2

公开(公告)日：2023-11-21

申请号：US17047031

申请日：2018-12-03

Applicant: Appotronics Corporation Limited

Inventor： Da-Yan Dai ,  Hao Zhou ,  Yi Li

IPC: G02B26/00 ,  G03B21/20

CPC classification number: G02B26/008 ,  G03B21/204

Abstract: A colour wheel assembly, a light source system provided with the same, and a projection device are provided, a boron nitride coating being arranged on the side of the colour wheel assembly corresponding to a red fluorescent area and the other side being provided with glass powder, and the two sides of a non-red fluorescent area both being provided with a glass powder coating layer. By means of arranging boron nitride material in a position corresponding to a red fluorescent area, as the boron nitride material has good thermal conductivity relative to the glass powder and the crystal structure of the boron nitride is a layered structure, having the effect of effectively blocking light and thereby further reducing the excitation light incident on the red fluorescent powder, attenuation of the red fluorescence under the direct excitation of strong excitation light can be effectively prevented.

公开(公告)号：US11415872B2

公开(公告)日：2022-08-16

申请号：US17419217

申请日：2019-12-23

Applicant: APPOTRONICS CORPORATION LIMITED

Inventor： Dayan Dai ,  Hao Zhou ,  Xia Song ,  Yi Li

IPC: G03B21/20 ,  G02B5/02 ,  G02B26/00

Abstract: A wavelength conversion device and a light-emitting device and a projection device using the wavelength conversion device are provided. The wavelength conversion device includes a substrate capable of rotating around a rotating shaft, the substrate includes a first surface and a second surface opposite to each other, and an annular side surface, which is formed between the first surface and the second surface and is not perpendicular to the first surface. The first surface is provided with a wavelength conversion material layer, and the annular side surface includes a first area and a second area. The first area and the second area are used to reflect incident light beams.