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 and a second lens array plate each provided with a plurality of convex lenses on both surfaces; a first light-shielding member provided with a plurality of first openings; and a second light-shielding member provided with a plurality of second openings. The first lens array plate and the second lens array plate form a stack such that a combination of the lenses associated with each other form a coaxial lens system. The first light-shielding member is provided on the first lens array plate such that the first opening is located opposite to the corresponding convex lens. The second light-shielding member is provided on the second lens array plate such that the second opening is located opposite to the corresponding fourth lens. An open end of each of the first opening and the second opening facing the lens is formed to become progressively larger in diameter toward the end.
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申请公布号 |
US2011128592(A1) |
申请公布日期 |
2011.06.02 |
申请号 |
US20100957933 |
申请日期 |
2010.12.01 |
申请人 |
NIPPON SHEET GLASS COMPANY, LIMITED |
发明人 |
MAMADA HARUHIKO;SATO SHIRO;SHIMMO KATSUHIDE |
分类号 |
H04N1/04;G02B27/12 |
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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