Patents by Inventor Caihong DAI

Caihong DAI 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).

  • BRDF measurement system and method, electronic device, and storage medium
    Patent number: 12188831
    Abstract: A bidirectional reflectance distribution function (BRDF) measurement system and method, an electronic device, and a storage medium. The BRDF measurement system includes: a blackbody, a spectroradiometer and a controller; where in case that the blackbody is heated to a target temperature, it undergoes a solid-liquid phase change; the spectroradiometer is used to measure the blackbody and transmit a first measurement signal to the controller, and in case that the blackbody irradiates a to-be-measured point on a sample surface, the spectroradiometer is further used to measure radiation from the to-be-measured point, and transmit a second measurement signal to the controller; and the controller is used to obtain a BRDF of the to-be-measured point based on the first measurement signal, the second measurement signal, the target geometric relationship, a target mapping relationship and a dimension parameter of the blackbody.
    Type: Grant
    Filed: October 17, 2023
    Date of Patent: January 7, 2025
    Assignee: National Institute of Metrology, China
    Inventors: Zhifeng Wu, Caihong Dai, Ling Li, Yanfei Wang, Sijie He
  • BRDF MEASUREMENT SYSTEM AND METHOD, ELECTRONIC DEVICE, AND STORAGE MEDIUM
    Publication number: 20240133749
    Abstract: A bidirectional reflectance distribution function (BRDF) measurement system and method, an electronic device, and a storage medium. The BRDF measurement system includes: a blackbody, a spectroradiometer and a controller; where in case that the blackbody is heated to a target temperature, it undergoes a solid-liquid phase change; the spectroradiometer is used to measure the blackbody and transmit a first measurement signal to the controller, and in case that the blackbody irradiates a to-be-measured point on a sample surface, the spectroradiometer is further used to measure radiation from the to-be-measured point, and transmit a second measurement signal to the controller; and the controller is used to obtain a BRDF of the to-be-measured point based on the first measurement signal, the second measurement signal, the target geometric relationship, a target mapping relationship and a dimension parameter of the blackbody.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 25, 2024
    Inventors: Zhifeng WU, Caihong DAI, Ling LI, Yanfei WANG, Sijie HE