Patents by Inventor Zhang-Ming Chang

Zhang-Ming Chang 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).

  • Binoculars rangefinder
    Patent number: 10234283
    Abstract: A binoculars rangefinder includes a central shaft, two eyepieces, two objective lenses, two prism modules, an optical transmitter, and an optical receiver. The eyepieces are disposed on two sides of the central shaft, allowing a first light beam reflected by an object to pass therethrough. The objective lenses are disposed on the two sides of the central shaft. The prism modules are disposed between the eyepieces and objective lenses. The optical transmitter is configured to emit a second light beam to the object. The optical receiver is configured to receive the second beam which is reflected by the object.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: March 19, 2019
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.
    Inventors: Zhang-Ming Chang, Hua-Tang Liu, Yue-Ye Chen, Zhi-Wei Gao, Shang Luo
  • Binoculars Rangefinder
    Publication number: 20160187131
    Abstract: A binoculars rangefinder includes a central shaft, two eyepieces, two objective lenses, two prism modules, an optical transmitter, and an optical receiver. The eyepieces are disposed on two sides of the central shaft, allowing a first light beam reflected by an object to pass therethrough. The objective lenses are disposed on the two sides of the central shaft. The prism modules are disposed between the eyepieces and objective lenses. The optical transmitter is configured to emit a second light beam to the object. The optical receiver is configured to receive the second beam which is reflected by the object.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 30, 2016
    Inventors: Zhang-Ming Chang, Hua-Tang Liu, Yue-Ye Chen, Zhi-Wei Gao, Shang Luo
  • Rangefinder
    Patent number: 8970824
    Abstract: A rangefinder for measuring a distance of an object includes a case, in which a refractor, a measuring light source, a light receiver, a receiving lens, a reference light source, and a reflector are provided. The measuring light source emits measuring light to the refractor, and the refractor refracts the measuring light to the object. The measuring light reflected by the object emits to the light receiver through the receiving lens. The reference light emits reference light to the reflector, and the reflector reflects the reference light to the light receiver. The refractor and the reflector may be turned for calibration.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: March 3, 2015
    Assignee: Asia Optical Co., Inc.
    Inventors: Zhang-Ming Chang, Hua-Tang Liu
  • RANGEFINDER
    Publication number: 20130148096
    Abstract: A rangefinder for measuring a distance of an object includes a case, in which a refractor, a measuring light source, a light receiver, a receiving lens, a reference light source, and a reflector are provided. The measuring light source emits measuring light to the refractor, and the refractor refracts the measuring light to the object. The measuring light reflected by the object emits to the light receiver through the receiving lens. The reference light emits reference light to the reflector, and the reflector reflects the reference light to the light receiver. The refractor and the reflector may be turned for calibration.
    Type: Application
    Filed: March 13, 2012
    Publication date: June 13, 2013
    Applicant: ASIA OPTICAL CO., INC.
    Inventors: Zhang-Ming Chang, Hua-Tang Liu