发明名称 |
Erecting equal-magnification lens array plate, optical scanning unit, and image reading device |
摘要 |
An erecting equal-magnification lens array plate includes: a first lens array plate provided with a plurality of first lenses arranged on a first surface and a plurality of second lenses arranged on a second surface opposite to the first surface; and a second lens array plate provided with a plurality of third lenses arranged on a third surface and a plurality of fourth lenses arranged on a fourth surface opposite to the third surface. The first and second lens array plates form a stack such that the second surface and the third surface face each other. The erecting equal-magnification lens array plate receives light from a linear light source facing the first surface and forms an erect equal-magnification image of the linear light source on an image plane facing the fourth surface. An annular slope is formed around each second lens and each third lens.
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申请公布号 |
US8576459(B2) |
申请公布日期 |
2013.11.05 |
申请号 |
US201113293848 |
申请日期 |
2011.11.10 |
申请人 |
NAGATA HIDESHI;NIPPON SHEET GLASS COMPANY, LIMITED |
发明人 |
NAGATA HIDESHI |
分类号 |
H04N1/04 |
主分类号 |
H04N1/04 |
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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