Patents by Inventor Cheng Yi LIM

Cheng Yi LIM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • MEMS device for lens barrel positioning
    Patent number: 10564385
    Abstract: The Micro electro-mechanical system (MEMS) utilizes thermal micro-actuators for lens barrel positioning in a camera module for smart device such as mobile phone. The micro actuators are radially extended from a lens barrel, wherein each of the micro actuators is bendable in response to thermal energy. A control unit includes a heater circuit operatively linked to the micro actuators to controllably apply the thermal energy to each of the micro actuators, wherein each of the micro actuators is bent correspondingly to move the lens barrel with respect to the base so as to control a 3-axis positioning of the lens barrel. The micro actuators are also operated independent of ambient temperature.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: February 18, 2020
    Assignees: Ningbo Sunny Opotech Co., Ltd., Nanyang Technological University
    Inventors: Nyok Boon Chong, Cheng Yi Lim, Zhenyu Chen, Gih Keong Lau, Chuangui Zhu
  • MEMS Device for Lens Barrel Positioning
    Publication number: 20170254978
    Abstract: The Micro electro-mechanical system (MEMS) utilizes thermal micro-actuators for lens barrel positioning in a camera module for smart device such as mobile phone. The micro actuators are radially extended from a lens barrel, wherein each of the micro actuators is bendable in response to thermal energy. A control unit includes a heater circuit operatively linked to the micro actuators to controllably apply the thermal energy to each of the micro actuators, wherein each of the micro actuators is bent correspondingly to move the lens barrel with respect to the base so as to control a 3-axis positioning of the lens barrel. The micro actuators are also operated independent of ambient temperature.
    Type: Application
    Filed: February 7, 2017
    Publication date: September 7, 2017
    Inventors: Nyok Boon CHONG, Cheng Yi LIM, Zhenyu CHEN, Gih Keong LAU, Chuangui ZHU