Magnifying spectacles |
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| 申请号 | JP18172187 | 申请日 | 1987-07-20 | 公开(公告)号 | JPS6424221A | 公开(公告)日 | 1989-01-26 |
| 申请人 | Kanda Obuteikaru Kk; | 发明人 | KANDA KOJI; | ||||
| 摘要 | PURPOSE:To share for unspecific masses by fitting a pair of concave lenses and a pair of convex lenses and making it possible to adjust the distance between the lenses. CONSTITUTION:A pair of concave lenses 4 and 4 are fitted on the frame of spectacles 1 on a side nearer to the eyes of a wearer and the sides between the concave lenses 4 and the convex lenses 5 are made open. And a pair of convex lenses 5 and 5 are fitted in front of the concave lenses and the adjustment of the distance between the concave lenses, the adjustment of the distance between the convex lenses and the adjustment of the distance between the concave lenses and the convex lenses can be possible. Namely, the image of an object enlarged by the convex lenses 5 can be viewed as the enlarged virtual image of the object through the concave lenses 4. The magnification is decided in accordance with the convex lenses 5 and the distance to the object can be decided in accordance with the diopters of the concave lenses 4. The image enlarged by the convex lenses 5 is a little contracted through the concave lenses, but the enlarged image of the object can be distinctly viewed even if the distance between the object and the convex lenses is made sufficiently long. Thus, the distance between the lenses can be adjusted every wearing the spectacles, so that unspecific masses can share them. | ||||||
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| 说明书全文 | |||||||
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