Abstract: An optical system for a shape measuring device of the present invention includes a parallel light irradiation system and an imaging optical system, in which the parallel light irradiation system includes a point light source, a collimator lens, and a telecentric lens having a both side or object side telecentric structure to be irradiated with light from the collimator lens through an object to be measured, the imaging optical system includes an image sensor onto which an image of a portion of the object to be measured, the image by light passing through the telecentric lens is projected, and the point light source includes an LED, a diffusion member that diffuses and emits light from the LED; and a pinhole member having a pinhole into which light from the diffusion member is incident.

Abstract: The purpose of the present disclosure is to provide a non-aqueous electrolyte secondary battery that can suppress damage to an electrode body in the vicinity of an end of an insulation tape due to repetition of charging and discharging. A non-aqueous electrolyte secondary battery is characterized by comprising: an exterior body; a wound-type electrode body which is housed in the exterior body and in which a positive electrode and a negative electrode are wound with a separator interposed therebetween; and an insulation tape stuck to the electrode body. The non-aqueous electrolyte secondary battery is also characterized in that the insulation tape has a base material layer and an adhesive layer that is provided on a main surface of the base material layer, and a side surface of the base material layer is non-vertically inclined with respect to the main surface.