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ZOOM LENS, OPTICAL DEVICE PROVIDED WITH ZOOM LENS AND METHOD FOR MANUFACTURING ZOOM LENS
ZOOM LENS, OPTICAL DEVICE PROVIDED WITH ZOOM LENS AND METHOD FOR MANUFACTURING ZOOM LENS
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机译:变焦镜头,配备有变焦镜头的光学设备以及制造变焦镜头的方法
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摘要
A zoom lens ZL installed in an electronic still camera 1 and the like includes, in order from an object side, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, and a fourth lens group G4 having positive refractive power, a given conditional expressions are satisfied, where r3F denotes a radius of curvature of an image side lens surface of the cemented lens in the third lens group, and r3R denotes a radius of curvature of an object side lens surface of the negative meniscus lens in the third lens group, thereby providing a zoom lens having excellent optical performance, an optical apparatus equipped therewith, and a method for manufacturing the zoom lens.
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