发明名称 |
PLASTIC LENS, PHOTOGRAPHING LENS, IMAGING DEVICE, AND PORTABLE DEVICE |
摘要 |
A plastic lens includes a flange portion on an outer circumference of a lens effective-diameter portion and manufactured by injecting a resin into a mold via a gate portion. The plastic lens is characterized by having a shape satisfying conditions of s/t≦̸0.61 and E.D/D≧0.4 when s [mm] and t [mm] represent a peripheral thickness, a central thickness of the lens effective-diameter portion, E.D [mm] represents a lens effective diameter, and D [mm] represents a lens diameter. |
申请公布号 |
US2012314122(A1) |
申请公布日期 |
2012.12.13 |
申请号 |
US201013146096 |
申请日期 |
2010.12.22 |
申请人 |
YAMASHITA MASATOSHI;PANASONIC CORPORATION |
发明人 |
YAMASHITA MASATOSHI |
分类号 |
G02B3/00;G02B1/04;G02B5/18;G03B9/02;H04N5/225 |
主分类号 |
G02B3/00 |
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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