公开(公告)号：US20240134261A1

公开(公告)日：2024-04-25

申请号：US18369916

申请日：2023-09-18

Applicant: Qisda Corporation

Inventor： Jia-Ming ZHANG ,  Yi-Ling LO ,  Ching-Tze HUANG

IPC: G03B21/20

CPC classification number: G03B21/204 ,  G03B21/2013

Abstract: A projection device, including a light source module and a color wheel, is provided. The light source module includes a plurality of solid-state lighting sources driven by a DC drive power to sequentially provide a first light generated by a first number of light sources, a second light generated by a second number of light sources and a third light generated by a third number of light sources within a response cycle, wherein the number of light sources to be turn on is less than or equivalent to a total number of solid-state lighting sources. The color wheel has a first block, a second block and a third block, respectively corresponding to the first to third lights, so that the projection device sequentially outputs a first color light with a first brightness, a second color light with a second brightness and a third color light with a third brightness.

公开(公告)号：US20240077188A1

公开(公告)日：2024-03-07

申请号：US18236907

申请日：2023-08-22

Applicant: Qisda Corporation

Inventor： Chih-Shiung CHIEN ,  Ming-Kuen LIN ,  Tsung-Hsun WU ,  Yi-Ling LO

IPC: F21V13/14 ,  F21V5/00 ,  F21V9/20 ,  F21V9/40

CPC classification number: F21V13/14 ,  F21V5/008 ,  F21V9/20 ,  F21V9/40 ,  F21Y2113/10

Abstract: A light source module includes a first light source and a second light source. The first light source is configured for emitting a first light having a first wavelength, and the first light includes a first part and a second part. The second light source is configured for emitting a second light having a second wavelength. The second light source includes a first wavelength conversion layer, and the first wavelength conversion layer is configured for converting the first light into the second light. One of the first part and the second part is incident to the first wavelength conversion layer, and the other of the first part and the second part is not incident to the first wavelength conversion layer.

公开(公告)号：US20220390819A1

公开(公告)日：2022-12-08

申请号：US17730307

申请日：2022-04-27

Applicant: Qisda Corporation

Inventor： Chih-Shiung CHIEN ,  Ming-Kuen LIN ,  Tsung-Hsun WU ,  Yi-Ling LO

IPC: G03B21/20 ,  G02B27/14

Abstract: A light source module including first and second light sources, first and second wavelength conversion units, first and second light-splitting units is provided. The first light source emits a first light having a first wavelength. The first wavelength conversion unit converts at least one portion of the first light into a first converted light having a second wavelength. The second light-splitting unit allows the light having the first wavelength to travel through and reflects the light having the second wavelength. The second light source emits a second light having the first wavelength. The second wavelength conversion unit converts at least one portion of the second light into a second converted light having the second wavelength. The first light-splitting unit disposed between the first and the second wavelength conversion units reflects the light having the first wavelength and allow the light having the second wavelength to travel through.

公开(公告)号：US20230140583A1

公开(公告)日：2023-05-04

申请号：US17731200

申请日：2022-04-27

Applicant: Qisda Corporation

Inventor： Chih-Shiung CHIEN ,  Ming-Kuen LIN ,  Yi-Ling LO ,  Tsung-Hsun WU

IPC: G03B21/20 ,  G02B27/14

Abstract: A light source module includes a first light-splitting element, a second light-splitting element, a first light source, a second light source and a third light source. The first light source is configured to emit first light having a first wavelength to the first light-splitting element in a first optical path direction. The second light source is configured to emit second light having the first wavelength to the second light-splitting element in a second optical path direction opposite to the second optical path direction. The third light source is configured to emit third light having a second wavelength in a third optical path direction substantially perpendicular to the first optical path direction. The first light source includes a first reflective layer, the second light source includes a second reflective layer, wherein the first reflective layer and the second reflective layer are configured to reflect light having the first wavelength.

公开(公告)号：US20230135388A1

公开(公告)日：2023-05-04

申请号：US17731209

申请日：2022-04-27

Applicant: Qisda Corporation

Inventor： Chih-Shiung CHIEN ,  Ming-Kuen LIN ,  Yi-Ling LO ,  Tsung-Hsun WU

IPC: G02B27/10 ,  F21V7/22 ,  G02B27/14

Abstract: A light source module includes a first light-splitting element, a second light-splitting element, a first light source, a second light source and a third light source. The first light source emits a first light having a first wavelength to the first light-splitting element in a first optical path direction. The second light source emits a second light having the first wavelength to the first light-splitting element in a second optical path direction perpendicular to the first optical path direction. The third light source emits a third light having a second wavelength to the first and second light-splitting elements in a third optical path direction opposite to the second optical path direction, and the second wavelength is different from the first wavelength. The first light source and the second light source include reflection layers configured to reflect light having the first wavelength.

公开(公告)号：US20240231210A9

公开(公告)日：2024-07-11

申请号：US18369916

申请日：2023-09-19

Applicant: Qisda Corporation

Inventor： Jia-Ming ZHANG ,  Yi-Ling LO ,  Ching-Tze HUANG

IPC: G03B21/20

CPC classification number: G03B21/204 ,  G03B21/2013

Abstract: A projection device, including a light source module and a color wheel, is provided. The light source module includes a plurality of solid-state lighting sources driven by a DC drive power to sequentially provide a first light generated by a first number of light sources, a second light generated by a second number of light sources and a third light generated by a third number of light sources within a response cycle, wherein the number of light sources to be turn on is less than or equivalent to a total number of solid-state lighting sources. The color wheel has a first block, a second block and a third block, respectively corresponding to the first to third lights, so that the projection device sequentially outputs a first color light with a first brightness, a second color light with a second brightness and a third color light with a third brightness.

公开(公告)号：US20220390820A1

公开(公告)日：2022-12-08

申请号：US17730321

申请日：2022-04-27

Applicant: Qisda Corporation

Inventor： Chih-Shiung CHIEN ,  Ming-Kuen LIN ,  Tsung-Hsun WU ,  Yi-Ling LO

IPC: G03B21/20 ,  G02B27/14

Abstract: A light source module including first and second light sources, first and second wavelength conversion units, and first and second light splitting units is provided. The first light source emits a first light having a first wavelength. The first wavelength conversion unit converts at least one portion of the first light into a first converted light having a second wavelength. The second light splitting unit allows the lights having the second and third wavelengths to travel through and reflects the light having the first wavelength. The second light source emits a second light having the first wavelength. The second wavelength conversion unit converts at least one portion of the second light into a second converted light having the third wavelength. The first light splitting unit is disposed between the first and second wavelength conversion units and reflects the first wavelength and allows the second wavelength to travel through.

公开(公告)号：US20220249209A1

公开(公告)日：2022-08-11

申请号：US17582106

申请日：2022-01-24

Applicant: Qisda Corporation

Inventor： Chien-Hung LIN ,  Po-Fu WU ,  Jun-Ming SHEN ,  Szu-Fan CHEN ,  Yi-Ling LO

IPC: A61C9/00 ,  A61B1/00 ,  A61B1/24 ,  G02B26/08

Abstract: An oral scanner including a heating element, a reflecting element and a temperature difference generating element is provided. The temperature difference generating element has a high temperature end and a low temperature end. The high temperature end is connected to the reflecting element to heat the reflecting element, and the low temperature end is connected to the heating element to cool the heating element.