BRDF measurement system and method, electronic device, and storage medium

US12188831B2 · kind B2 · utility

Assignee

• NATIONAL INSTITUTE OF METROLOGY, CHINA · CN

Inventors

• Zhifeng Wu · Beijing, CN
• Caihong Dai · Beijing, CN
• Ling Li · Buffalo Grove, US
• Yanfei Wang · Lo Wu, CN
• Sijie He · Beijing, CN

Key dates

• Filing date: Oct 17, 2023
• Grant date: Jan 7, 2025
• Expiry date: Oct 17, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J2003/425
• WIPO field: Measurement
• WIPO sector: Instruments

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.