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Non-contact tonometer
专利权人:
Michihiro Takii
发明人:
Michihiro Takii
申请号:
US12379421
公开号:
US08596789B2
申请日:
2009.02.20
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A tonometer for measuring intraocular pressure of an examinees eye in a non-contact manner, comprises: an arithmetic part for calculating the intraocular pressure a fluid blowing unit for blowing a fluid at a cornea of the examinees eye through a nozzle a projecting optical system for projecting light onto an anterior segment of the examinees eye through the nozzle, the system including a light source and a condensing lens and an imaging optical system for imaging a cross-sectional image of the anterior segment, the system including an imaging lens and an imaging elements. The imaging optical system is placed so that extended planes of a cross section of the light projected onto the anterior segment by the projecting optical system, a principal plane of the imaging lens, and an imaging plane of the imaging element intersect one another on one axis, and the projecting optical system includes a light restriction unit that allows the light from the light source to pass through inside of the nozzle but not to pass through outside of the nozzle.
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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