Variable centroid spectacles |
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| 申请号 | JP9420583 | 申请日 | 1983-05-30 | 公开(公告)号 | JPS59219718A | 公开(公告)日 | 1984-12-11 |
| 申请人 | Yasusuke Kawai; | 发明人 | KAWAI YASUSUKE; | ||||
| 摘要 | PURPOSE:To prevent slip-off of spectacles by using a spectacle frame provided with the tips of arms having the construction in which the weights at the ends of the tips of the arms are attachably and detachably provided. CONSTITUTION:Weights are internally or externally provided on or in the tips 3 of arms or arms 2 except the tips 3. The tips 3 are so designed that the angle of tau the ear centroid angle T when the spectacles are put on is made variable in a suitable range and further single or plural weights are attachably and detachably provided to the ends O of the tips 3. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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