Abstract: An image pickup lens having high reliability is realized. The image pickup lens includes a substrate holding member that holds a flexible substrate. The substrate holding member is fixed with respect to a first surface. The substrate holding member has an opening which is formed therein and in which a polymer lens and a connection part are located in a plan view.

Abstract: The risk of deterioration in optical characteristic is reduced. An image pickup lens includes a second lens that has an abutting portion which is located on a rim of a lens surface and which abuts on a frame.

Abstract: A solar battery device includes: a substrate; a plurality of solar cells on the substrate; and a surface protector on the solar cell, so as to protect a surface of the solar battery device. The surface protector has an incident surface to which light enters, and which is subjected to an anti-reflection process for preventing reflection of the light, thereby to improve power generation efficiency. The anti-reflection process for examples gives the surface protector a saw-tooth-like shape. The surface protector is made of a synthetic resin. In this way, the present invention provides a solar battery device in which reduction in the power generation efficiency due to the surface protector or the like on the surface thereof is prevented, and which has excellent transportability and applicability to portable devices.