公开(公告)号：US20210109432A1

公开(公告)日：2021-04-15

申请号：US17065588

申请日：2020-10-08

Applicant: Qisda Corporation

Inventor： Chien-Hung LIN ,  Tzu-Huan HSU

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

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：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.