发明名称
摘要 <p>An imaging lens SL mounted in a single lens reflex digital camera 1 is composed of, in order from an object side, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, and a third lens group G3 having negative refractive power. Upon focusing on a near-distance object from an infinitely distant object, a configuration is that at least any one of the first lens group G1 and the second lens group G2 is moved to the object side to vary a distance between the first lens group G1 and the second lens group G2. Accordingly, a downsized imaging lens having a small moving amount upon shooting a close range object, in which various aberrations are well corrected is provided.</p>
申请公布号 JP5500382(B2) 申请公布日期 2014.05.21
申请号 JP20100211657 申请日期 2010.09.22
申请人 发明人
分类号 G02B13/00;G02B13/18 主分类号 G02B13/00
代理机构 代理人
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