公开(公告)号：US20250097389A1

公开(公告)日：2025-03-20

申请号：US18822504

申请日：2024-09-03

Applicant: Qisda Corporation

Inventor： Chien-Hung Lin ,  Tzu-Huan Hsu

IPC: H04N9/31

Abstract: A projection device includes a casing, a light source module, a first heat sink, a second heat sink and a fan. The casing has a first side cover and a second side cover opposite each other, the first side cover has a first opening, and the second side cover has a second opening. The light source module is configured in the casing to provide an illumination beam. The first heat sink is thermally coupled to the light source module. The second heat sink is thermally coupled to the first heat sink, and the second heat sink is closer to the first side cover than the light source module. The fan has an air outlet surface and a side surface adjacent to each other, and the first heat sink is inclined to the fan and extends to the side surface.

公开(公告)号：US11231642B2

公开(公告)日：2022-01-25

申请号：US17065588

申请日：2020-10-08

Applicant: Qisda Corporation

Inventor： Chien-Hung Lin ,  Tzu-Huan Hsu

IPC: G03B21/20 ,  H05B47/105 ,  G03B21/16 ,  G03B33/12

Abstract: A light source module, a projector using the same and a light source control method are disclosed. The light source module includes a laser light source, a temperature sensor, a light source driver and a controller. The temperature sensor is adjacent to the light source and configured to sense a light source temperature of the laser light source. The controller is configured to: (1) determine whether the light source temperature reaches a first temperature value; (2) if yes, control the light source driver to drive the laser light source to illuminate by a first current; (3) determine whether the light source temperature changes from the first temperature value to a second temperature value different from the first temperature value; and, (4) if yes, control the light source driver to drive the laser light source to illuminate by a second current different from the first current.

公开(公告)号：US11221546B2

公开(公告)日：2022-01-11

申请号：US16858694

申请日：2020-04-26

Applicant: QISDA CORPORATION

Inventor： Chien-Hung Lin ,  Tzu-Huan Hsu ,  Sheng-Wen Hu ,  Hsin-Jung Yeh ,  Chih-Chieh Tsung

IPC: G03B21/14 ,  G02B9/06 ,  G03B21/16

Abstract: A lens includes a casing, a first lens group, a second lens group and a heat dissipating member. The first lens group is disposed in the casing and close to a first side of the casing. The second lens group is disposed in the casing and close to a second side of the casing, wherein the first side is opposite to the second side. The heat dissipating member is disposed at the second side of the casing and contacts the casing.

公开(公告)号：US20200379323A1

公开(公告)日：2020-12-03

申请号：US16858694

申请日：2020-04-26

Applicant: QISDA CORPORATION

Inventor： Chien-Hung Lin ,  Tzu-Huan Hsu ,  Sheng-Wen Hu ,  Hsin-Jung Yeh ,  Chih-Chieh Tsung

IPC: G03B21/14 ,  G02B9/06 ,  G03B21/16

Abstract: A lens includes a casing, a first lens group, a second lens group and a heat dissipating member. The first lens group is disposed in the casing and close to a first side of the casing. The second lens group is disposed in the casing and close to a second side of the casing, wherein the first side is opposite to the second side. The heat dissipating member is disposed at the second side of the casing and contacts the casing.

公开(公告)号：US20200019047A1

公开(公告)日：2020-01-16

申请号：US16413571

申请日：2019-05-15

Applicant: QISDA CORPORATION

Inventor： Chien-Hung Lin ,  Tsung-Hsun Wu

IPC: G03B21/14 ,  G02B5/00 ,  H04N9/31

Abstract: A projector includes a casing, a controlling module, and an optical engine. The controlling module and the optical engine are disposed in the casing. The controlling module is electrically connected to the optical engine for controlling operation of the optical engine. The optical engine includes a light source, a phosphor wheel, and an airflow generating device. The phosphor wheel has a rotary surface and at least one phosphor region on the rotary surface. The phosphor region can absorb a first light from the light source to emit a second light at a different wavelength. The airflow generating device generates an airflow. The airflow obliquely blows to the rotary surface, so as to dissipate heat from the phosphor wheel.