- 专利标题: Reflected dark field method and apparatus
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申请号: US13651253申请日: 2012-10-12
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公开(公告)号: US08760758B2公开(公告)日: 2014-06-24
- 发明人: Marc Verboven , Troy Blodgett
- 申请人: Gemological Institute of America, Inc. (GIA)
- 申请人地址: US CA Carlsbad
- 专利权人: Gemological Institute of America, Inc. (GIA)
- 当前专利权人: Gemological Institute of America, Inc. (GIA)
- 当前专利权人地址: US CA Carlsbad
- 代理机构: DLA Piper LLP (US)
- 主分类号: G01N21/01
- IPC分类号: G01N21/01
摘要:
A reflected dark field structure includes a bottom plate, a support tube, a light unit, a diffuser structure, and a reflector unit that provides reflected dark field illumination, such that a gem held by the support tube and surrounded by the diffuser structure is illuminated and viewable through an aperture in the reflector unit. A method for imaging and analyzing a gem includes placing the gem onto a support tube where it is illuminated with dark field and reflected dark field illumination, and viewing the gem via an aperture located on a top reflector unit, which provides a top cover for the gem. Furthermore, a method and apparatus for obtaining images of a gem includes a dark field stage, a reflector unit, and an image-acquiring device, such that a gem placed in the dark field stage is illuminated, and such that the reflector unit covers the dark field stage and provides reflected dark field illumination, and such that the image-acquiring device is directed towards an aperture in the reflector unit.
公开/授权文献
- US20130038713A1 REFLECTED DARK FIELD METHOD AND APPARATUS 公开/授权日:2013-02-14
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