发明名称 |
Progressive spectacle lens with low swaying effects |
摘要 |
Described is a spectacle lens comprising 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 the power of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at the near reference point located in the near portion along a curve (principal line) veering towards the nose. The invention is distinct in that the astigmatic deviation, i.e. the difference between the prescribed and the actual astigmatism along circles having a center lying 4 mm below the centration point and having a diameter of 10 to 40 mm satisfies the following conditions: two local minima occur which on a "right-hand side spectacle lens" are located at 95°±10° (according to TABO) and at 280°±10°, and on a "left-hand side spectacle lens" at 85°±10° and 260°±10°; and two local maxima occur which on both a "right-hand side spectacle lens" and also a "left-hand-side spectacle lens" are located at 215°±10° and 335°±10°.
|
申请公布号 |
US6669337(B2) |
申请公布日期 |
2003.12.30 |
申请号 |
US20020280081 |
申请日期 |
2002.10.25 |
申请人 |
OPTISCHE WERKE G. RODENSTOCK |
发明人 |
WELK ANDREA;BAUMBACH PETER;HAIMERL WALTER;PFEIFFER HERBERT;AWRATH NORBERT;ESSER GREGOR;ALTHEIMER HELMUT;DORSCH RAINER;ZIMMERMANN MARTIN;BROSIG JOCHEN;MUELLER WERNER;WECHS MARTIN;HASER STEPHAN;NIKOLAUS WINFRIED |
分类号 |
G02C7/02;(IPC1-7):G02C7/06 |
主分类号 |
G02C7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|