发明名称 Wide angle zoom lens system
摘要 A wide angle zoom lens system having a compact configuration is provided for use with 35 mm single lens reflex cameras. The zoom lens system includes two lens groups that can be relatively displaced along the optical axis to provide variation in focal length. The first lens group has a negative refractive power and the second lens group has a positive refractive power. A wide field angle is provided while minimizing the number of optical lens elements that constitute the two group zoom lens system.
申请公布号 US4198128(A) 申请公布日期 1980.04.15
申请号 US19780866939 申请日期 1978.01.04
申请人 MINOLTA CAMERA K K 发明人 OGINO, SHUJI
分类号 G02B13/04;G02B15/16;G02B15/177;(IPC1-7):G02B15/14 主分类号 G02B13/04
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