发明名称 |
Progressive spectacle lens having only a small change of binoclar properties during a movement of glance |
摘要 |
A spectacle lens comprises a region (distance portion) designed for viewing at large distances and in particular "to infinity"; a region (near portion) designed for viewing at short distances and in particular "reading distances"; and a progressive zone disposed between the distance portion and the near portion, in which a power of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at a near reference point located in the near portion along a curve (principal line) veering towards a nose. The invention is distinct in that, for minimising a change of binocular imaging properties with horizontal movements of glance, a lift (difference between a maximum and a minimum value occurring during a movement) of binocular imaging properties when a moving object is being followed, is smaller than a physiologically pre-determined limiting amount.
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申请公布号 |
US2003142266(A1) |
申请公布日期 |
2003.07.31 |
申请号 |
US20020281275 |
申请日期 |
2002.10.28 |
申请人 |
HAIMERL WALTER;PFEIFFER HERBERT;ESSER GREGOR;ALTHEIMER HELMUT;WELK ANDREA;BAUMBACH PETER;DORSCH RAINER |
发明人 |
HAIMERL WALTER;PFEIFFER HERBERT;ESSER GREGOR;ALTHEIMER HELMUT;WELK ANDREA;BAUMBACH PETER;DORSCH RAINER |
分类号 |
G02C7/06;G02C7/02;(IPC1-7):G02C7/02 |
主分类号 |
G02C7/06 |
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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