PROBLEM TO BE SOLVED: To provide an image capturing device capable of providing good optical performance with a small number of lens components.SOLUTION: A lens component is defined as a lens having just two surfaces, an object-side surface and image-side surface, exposed to air in a path of light contributing to image formation, or an effective light path. An image capturing device comprises an imaging optical system comprising two lens components, an object-side lens component L1 and image-side lens component L2, in order from the object side to the image side and an image capturing unit disposed on the image side of the imaging optical system and provided with a concavely curved image capturing surface I on the object side. A most object-side surface of the object-side lens component has a concave portion that is concave in a meridional direction at least in an off-axis effective area on the object side, and a most image-side surface of the image-side lens component is a curved surface.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】少ないレンズ成分で、良好な光学性能を確保できる撮像装置を提供する。【解決手段】レンズ成分を結像に寄与する光束が通過する光路である有効光路にて空気に接触する面が物体側面と像側面の2面のみのレンズとしたときに、物体側から像側に順に、物体側レンズ成分L1、像側レンズ成分L2の2つのレンズ成分からなる結像光学系と、結像光学系の像側に配置され、物体側に凹状に湾曲した撮像面Iを持つ撮像部と、からなる撮像装置であって、物体側レンズ成分の最も物体側の面が少なくとも軸外の有効面内においてメリディオナル方向で物体側に凹形状となる凹形状部分を有する面であり、像側レンズ成分の最も像側の面が曲面である。【選択図】図4
