Patents by Inventor CHIA-TSUN HUNG

CHIA-TSUN HUNG 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).

  • OPTICAL IMAGING LENS
    Publication number: 20230314762
    Abstract: An optical imaging lens, in order from an object side to an image side along an optical axis, includes a first lens assembly, an aperture, and a second lens assembly. The first lens assembly includes a first lens having negative refractive power and a second lens having positive refractive power. The second lens assembly includes a third lens having positive refractive power, a fourth lens having negative refractive power, and a fifth lens having positive refractive power. The optical imaging lens satisfies: ?5<fg1/F<?3.5 and 1.5<fg2/F<2.5; F is a focal length of the optical imaging lens; fg1 is a focal length of the first lens assembly; fg2 is a focal length of the second lens assembly, thereby achieving the effect of high image quality.
    Type: Application
    Filed: June 15, 2022
    Publication date: October 5, 2023
    Applicant: Calin Technology Co., Ltd.
    Inventors: YUNG-CHIEH TSENG, PEI-LUN CHEN, CHIA-TSUN HUNG