发明名称 |
SUBJECTIVE EYE REFRACTING POWER MEASUREMENT APPARATUS |
摘要 |
There is provided a subjective eye refracting power measurement apparatus which measures a refracting power of a subject eye. The apparatus includes a projection optical system which projects a visual target light flux toward the subject eye to form a visual target on a fundus of the subject eye; a correction optical system which changes a refracting power thereof; a relay optical system which relays a light flux passing through the correction optical system and to form an image of the correction optical system in front of the subject eye; a deviation detector which detects a positional deviation of the image of the correction optical system with respect to the subject eye; and a correction unit which optically corrects a formation position of the image based on a detection result by the deviation detector such that the image is formed in front of the subject eye. |
申请公布号 |
US2014211165(A1) |
申请公布日期 |
2014.07.31 |
申请号 |
US201414167368 |
申请日期 |
2014.01.29 |
申请人 |
NIDEK CO., LTD. |
发明人 |
KOBAYASHI Toshihiro;HOSOI Yoshinobu |
分类号 |
A61B3/032 |
主分类号 |
A61B3/032 |
代理机构 |
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代理人 |
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主权项 |
1. A subjective eye refracting power measurement apparatus configured to measure a refracting power of a subject eye, the apparatus comprising:
a projection optical system configured to project a visual target light flux toward the subject eye to form an eye-examination visual target on a fundus of the subject eye; a correction optical system disposed in an optical path of the projection optical system and configured to change a refracting power thereof; a relay optical system configured to relay a light flux passing through the correction optical system and to form an image of the correction optical system in front of the subject eye; a deviation detector configured to detect a positional deviation of the image of the correction optical system with respect to the subject eye; and a correction unit configured to optically correct a formation position of the image of the correction optical system based on a detection result by the deviation detector such that the image of the correction optical system is formed in front of the subject eye. |
地址 |
Gamagori JP |