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Model eye producing a speckle pattern having a reduced bright-to-dark ratio for use with optical measurement system for cataract diagnostics
专利权人:
LLC.;AMO Wavefront Sciences
发明人:
Copland, Richard J.,Neal, Daniel R.,Raymond, Thomas D.,Xiong, Wei,Pulaski, Paul D.,Farrer, Stephen W.,Vidal, Carmen Canovas
申请号:
AU2014412856
公开号:
AU2014412856A1
申请日:
2014.12.03
申请国别(地区):
AU
年份:
2017
代理人:
摘要:
A system includes a model eye and an optical measurement instrument, which includes: a corneal topography subsystem; a wavefront sensor subsystem; and an eye structure imaging subsystem. The subsystems may have a common fixation axis, and be operatively coupled to each other via a controller. The optical measurement instrument may perform measurements of the model eye to verify correct operation of the optical measurement instrument for measuring one or more characteristics of a subject's eye. The model eye may include an optically transmissive structure having a front curved surface and an opposite rear planar surface, and a material structure provided at the rear planar surface of the optically transmissive structure and having a characteristic to cause a speckle pattern of a portion of a coherent light beam that is directed back out the front curved surface of the optically transmissive structure to have a bright-to-dark ratio of less than 2: 1.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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