Guangzhou Biaoqi Optoelectronics Technology Development Co., Ltd.

Biaoqi Electronics Technology, Co., Ltd.

Guangjun Song

Xiangli Zheng

Jianfeng Wu

Ling Gao

A fast method for batch screening diamonds includes placing diamonds on a worktable, turning on a light source arranged on one side of the worktable to shed light on the diamonds where the light includes visible light, photographing the diamonds on the worktable through an imager to obtain a basal image showing the distribution of the diamonds, switching the light source to shortwave UV light with a wavelength ranging from 180 nm to 250 nm, maintaining the light source in work condition for a period of time and then turn it off, photographing the diamonds on the worktable through the imager to obtain a phosphorescence distribution image showing phosphorescent diamonds, overlapping the basal image with the phosphorescence distribution image to obtain a phosphorescence comparison map, marking the phosphorescent diamonds on the phosphorescence comparison map through image recognition technology, and then picking out the phosphorescent diamonds as suspicious diamonds.

Fast method for batch screening diamonds

A reflectance spectroscopy measuring and sampling system for gemstone testing is disclosed. The system includes a first light source (), a second light source (), a light filtering element, an integrating sphere (S), an optical fiber (), a spectroscopic detection module (), an analog-digital conversion module () and a data processing terminal (), wherein the integrating sphere (S) is provided with an entrance port, a sampling opening () and a reflected light exit port (). A reflectance spectroscopy measuring and sampling method for gemstone testing is also disclosed. The system and the method have an excellent performance and can be widely used in the gemstone identification.

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Guangzhou, China

Guangjun Song