发明名称 |
APPARATUS FOR DETERMINING THE DISTANCE BETWEEN PUPILS |
摘要 |
An apparatus for determining the distance between the pupils to yield values representative of lenses properly aligned with the patient's pupils when mounted in the sockets of a spectacle frame. The apparatus consists of a calibration device having spaced fixed marking for placement in the plane of lenses, a camera with a zooming arrangement for taking an image of the subject, and a computer for generating parametric values relevant to the lenses to be ground as a function of the distance between the camera and the subject, the position of the zooming device at the time the image is taken, and the size of the image on the focal plane of the camera.
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申请公布号 |
CA2479064(A1) |
申请公布日期 |
2006.02.25 |
申请号 |
CA20042479064 |
申请日期 |
2004.08.25 |
申请人 |
OLLENDORF, HANS-JOACHIM;HASS, PETER JOHANN |
发明人 |
OLLENDORF, HANS-JOACHIM;HASS, PETER JOHANN |
分类号 |
A61B3/11;G02C13/00 |
主分类号 |
A61B3/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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