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自覚式眼屈折力測定装置
专利权人:
株式会社ニデック
发明人:
小林 俊洋,細井 良晋
申请号:
JP2013016259
公开号:
JP6205732B2
申请日:
2013.01.30
申请国别(地区):
JP
年份:
2017
代理人:
摘要:
PROBLEM TO BE SOLVED: To provide a subjective type eye refractivity measuring device capable of smoothly measuring eye refractivity without placing a correction optical system in front of a subject.SOLUTION: A subjective type eye refractivity measuring device comprises: a light-emitting optical system that emits a target light beam for forming an inspection target on a fundus of a subjects eye, to the subjects eye a correction optical system that is arranged in a light path of the light-emitting optical system and can change refractivity and a relay optical system that relays the light beam after passing through the correction optical system and is arranged so as to form an image of the correction optical system in front of the subjects eye, and the device measures eye refractivity of the subjects eye by changing the refractivity of the correction optical system. The device also comprises: distance changing means for optically making presented distance of the target different between at the time of distant vision inspection and at the time of near vision inspection and light path switching means for switching between a first light path for emitting the target light beam to the subjects eye from a horizontal direction and a second light path for emitting the target light beam to the subjects eye from a direction inclined downward to the horizontal direction.
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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