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Disposable ophthalmic lens
专利权人:
发明人:
申请号:
EP10192284.7
公开号:
EP2286719A3
申请日:
2002.11.12
申请国别(地区):
EP
年份:
2012
代理人:
摘要:
An ophthalmic lens with high definition, wide field of view and high magnification has, in one embodiment, a contact lens, an intermediate field lens and an image lens wherein a real image is formed inside the field lens. At least two of the lenses contribute to the magnification and three surfaces of the ophthalmic lens are aspheric to provide a better defined image. The ophthalmic lens is made disposable with high quality plastic lenses and a plastic holder. A portion of the holder changes appearance in response to change in environment to indicate that the disposable lens has been used.
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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