发明名称 Wide-angle optical lens assembly
摘要 A wide-angle optical lens assembly comprises, in order from an object side to an image side: a first lens element with a negative refractive power having concave image-side surface, a second lens element with a positive refractive power, a third lens element with a positive refractive power, and a fourth lens element with a positive refractive power having convex image-side surface, at least one surface of the fourth lens element thereof being aspheric. By such arrangement, total track length and photosensitivity of the wide-angle optical lens assembly can be effectively reduced while retaining large field of view and superb image quality.
申请公布号 US8089698(B1) 申请公布日期 2012.01.03
申请号 US201113089328 申请日期 2011.04.19
申请人 TANG HSIANG-CHI;TSAI TSUNG-HAN;HUANG HSIN-HSUAN;LARGAN PRECISION CO., LTD. 发明人 TANG HSIANG-CHI;TSAI TSUNG-HAN;HUANG HSIN-HSUAN
分类号 G02B25/00;G02B13/04 主分类号 G02B25/00
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