岩石矿物学杂志2024，Vol.43Issue(3)：592-598,7.DOI:10.20086/j.cnki.yskw.2024.0307
新型紫外光致发光图像高速采集装置的研制及其在筛分天然钻石中的应用
Development of a new ultraviolet photoluminescence image high-speed acquisition device and its application in screening natural diamonds
摘要
Abstract
In order to improve the screening efficiency and accuracy of batch small particle diamonds,this paper developed a new type of ultraviolet photoluminescence image high-speed acquisition device—jewelry observation and identification instrument(DDO).Through the selection of excitation light source,industrial camera,structural design technology breakthroughs,and innovation in the collection method of luminescence phenomena,it achieved batch observation of photoluminescence phenomena and luminescence delay differences between different gem-stones,thereby achieving efficient detection of gemstones.The DDO test results on over 20 000 colorless natural diamonds,synthetic diamonds,and imitation diamonds show that 98％to 99％of colorless natural diamonds exhibit a blue phosphorescence phenomenon within 0.1～10 ms after the cessation of ultraviolet light excitation,which is a typical feature of natural diamonds.The luminescence characteristics(luminescence color,intensity,duration,structural zoning)of synthetic diamonds and other colorless gemstones are significantly different from natural diamonds.Therefore,a new method for rapid and accurate screening of colorless natural diamonds is established by observing the differences in continuous luminescence(phosphorescence)characteristics,including fluorescence and decay time within 100 ms,as screening conditions.This device improves the accuracy and detection efficiency of diamond i-dentification,with a screening pass rate of up to 99％for natural diamonds and 100％for synthetic and imitation diamonds.关键词
珠宝首饰观察鉴定仪(DDO)/钻石/荧光/磷光Key words
jewelry determining observation system(DDO)/diamond/fluorescence/phosphorescence分类
天文与地球科学引用本文复制引用
梁榕,兰延,高孔,张小虎,陈慕雨,王鸿浩,陆太进..新型紫外光致发光图像高速采集装置的研制及其在筛分天然钻石中的应用[J].岩石矿物学杂志,2024,43(3):592-598,7.基金项目
国家自然科学基金项目(42073008) （42073008）
NGTC科研基金项目(20210700-2,NGTC2019002) National Natrual Science Foundation of China(42073008) （20210700-2,NGTC2019002）
NGTC Research Fund Project(20210700-2,NGTC2019002) （20210700-2,NGTC2019002）
