Design and Renovation on Light Source System of Gem Microscope
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摘要: 宝石显微镜是珠宝鉴定和研究中必不可少的工具之一。宝石显微镜一般由放大系统、支架系统和光源系统三部分组成，传统宝石显微镜光源系统的设计存在明显缺陷与不足，笔者针对这些缺陷与不足，对宝石显微镜光源系统中的顶光源、底光源及反射系统进行设计与改造，有效提升宝石显微镜在垂直照明、亮域照明与暗域照明时宝石成像的质量。同时，设计增加了宝石显微镜偏光系统，能够有效放大观察正交偏光镜下宝石消光现象及正交偏光锥光镜下的宝石干涉图，对宝石光性、轴性的判定起到重要作用。本文着重对设计改造后的新型宝石显微镜成像效果与拓展功能进行阐述，并将其与改造前的宝石显微镜在性能与功能方面进行对比，突出宝石显微镜设计改造后的实用性。Abstract: Gem microscope is an essential instrument in routine inspection and the research of jewelry.Gem microscope generally consists of amplification system,bracket system and light source system.The light source system of traditional gem microscope has obvious defects and deficiencies.In view of imperfects,the authors focus on the design and renovation of top illuminant,bottom illuminant to create a new gem microscope in order to improve the image quality by top illumination,bright field illumination and dark field illumination.In additional,the added and designed polarizing optical system makes it effective observe the extinction phenomenon by crossed polarizing filters and interference figure,which plays an important role in the determination of optical and axis character.This paper focuses on the functions and image quality and extra function of the new gem microscope after improvement.For highlighting the new gem microscope design and practicality,the authors make some comparisons on the functions and image quality.
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Keywords:
- gem microscope /
- illuminant /
- improvement
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[1] GB/T 16553—2010,珠宝玉石 鉴定[S]. [2] 张蓓莉.系统宝石学[M].2版.北京:地质出版社,2006:542-548. [3] 曹维宇.宝石显微镜常用照明方法及选用[J].珠宝科技,1997,8(1):49-50.
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