IMAGING LENS AND IMAGING APPARATUS INCLUDING THE IMAGING LENS

PROBLEM TO BE SOLVED: To provide an imaging lens which achieves higher resolution performance while decreasing the total length thereof, and an imaging apparatus including the imaging lens.SOLUTION: An imaging lens substantially consists of, in order from an object side, five lenses of a first lens...

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Bibliographische Detailangaben
Hauptverfasser: KONDO MASAHITO, KOIKE KAZUMI, TANAKA TAKUYA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an imaging lens which achieves higher resolution performance while decreasing the total length thereof, and an imaging apparatus including the imaging lens.SOLUTION: An imaging lens substantially consists of, in order from an object side, five lenses of a first lens L1 that has a positive refractive power and has a meniscus shape which is concave toward the image side, a second lens L2 that has a negative refractive power and has a meniscus shape which is concave toward the image side, a third lens L3 that has a biconcave shape, a fourth lens L4 that has a positive refractive power and has a meniscus shape which is concave toward the image side, and a fifth lens L5 that has a biconcave shape and has an aspheric shape of which an image side surface has at least one extreme point. Further, the imaging lens satisfies a predetermined conditional expression. 【課題】全長の短縮化および高解像化を実現した撮像レンズおよびこの撮像レンズを備えた撮像装置を実現する。【解決手段】撮像レンズが、物体側から順に、正の屈折力を有し、像側に凹面を向けたメニスカス形状である第1レンズL1と、負の屈折力を有し、像側に凹面を向けたメニスカス形状である第2レンズL2と、両凹形状である第3レンズL3と、正の屈折力を有し、像側に凸面を向けたメニスカス形状である第4レンズL4と、両凹形状であり、像側の面に少なくとも1つの極値点を有する非球面形状である第5レンズL5と、から構成される実質的に5個のレンズからなり、所定の条件式を満足する。【選択図】図1