IMAGE CAPTURING LENS AND IMAGE CAPTURING DEVICE

• Main Author: HAGIWARA HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 10.10.2019
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

To provide a light-weight, inexpensive image capturing lens that exhibits little variations in in-focus position and field angle even when ambient temperature varies significantly, and offers good optical performance, and to provide an image capturing device.SOLUTION: An image capturing lens comprises a first lens Ghaving negative refractive power, and a succeeding lens group GRarranged in order from the object side. The succeeding lens group GRcomprises a second lens Ghaving positive refractive power, an aperture stop SP, a third lens Ghaving positive refractive power, and a forth lens Ghaving negative refractive power arranged in order from the object side. The third lens Gand fourth lens Gare made of resin, and are arranged next to each other on an optical axis with an air gap therebetween. The image capturing lens satisfies predefined conditional expressions.SELECTED DRAWING: Figure 1 【課題】雰囲気温度が大きく変化した場合でも合焦位置変動や画角変動が少なく、良好な光学性能を確保でき、軽量で安価な撮像レンズおよび撮像装置を提供する。【解決手段】物体側から順に、負の屈折力を有する第１レンズＧ11と、後続レンズ群ＧＲ1と、が配置されて構成され、後続レンズ群ＧＲ1は、物体側から順に、正の屈折力を有する第２レンズＧ12と、開口絞りＳＰと、正の屈折力を有する第３レンズＧ13と、負の屈折力を有する第４レンズＧ14と、が配置されて構成され、第３レンズＧ13および第４レンズＧ14は、樹脂で構成されており、第３レンズＧ13と第４レンズＧ14は、光軸上に空気間隔を隔てて隣接して配置されており、所定の条件式を満足する。【選択図】図１