发明名称 |
Reading aid for use as fine printed magnifying glass for three dimensionally detecting objects in shopping trolley, has imaging optic formed as multi-focal imaging optic, and holder for fastening reading aid at carrying object |
摘要 |
<p>The reading aid has an imaging optic (1) formed as a multi-focal imaging optic, and a holder (7) for fastening the aid at a carrying object i.e. shopping trolley. The optic has a non-rotational symmetric aspherical lens (3) with different radii of curvatures in two orthogonal planes. The lens and a base plate (5) of the optic are connected with each other or formed as a monolithic part, where the lens is formed as a plane-convex lens, and the base plate is radially projected over the lens. A peripheral edge of the base plate is embedded in an injection molded plastic ring (7a) of the holder.</p> |
申请公布号 |
CH702414(A2) |
申请公布日期 |
2011.06.30 |
申请号 |
CH20090001952 |
申请日期 |
2009.12.18 |
申请人 |
PATWAL GMBH |
发明人 |
MUENGER, HEINZ;GYGAX, MARKUS |
分类号 |
G02B25/00;G02B3/10 |
主分类号 |
G02B25/00 |
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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