发明名称 |
PHOTOGRAPHING OPTICAL SYSTEM |
摘要 |
This invention provides a photographing optical system comprising: in order from an object side to an image side: a first lens with positive refractive power having a convex object-side surface; a second lens with negative refractive power having a convex object-side surface and a concave image-side surface, at least one of the object-side and image-side surfaces thereof being aspheric; a third lens having at least one inflection point formed thereon and both surfaces thereof being aspheric. A stop is positioned between an imaged object and the first lens element. The photographing optical system further comprises an electronic sensor on which an object is imaged, and there are three lens elements of the photographing optical system with refractive power.
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申请公布号 |
US2011228157(A1) |
申请公布日期 |
2011.09.22 |
申请号 |
US20100854535 |
申请日期 |
2010.08.11 |
申请人 |
LARGAN PRECISION CO., LTD. |
发明人 |
TANG HSIANG CHI;TSAI TSUNG HAN |
分类号 |
H04N5/225;G02B13/18 |
主分类号 |
H04N5/225 |
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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