The present invention provides a radiation detection element that allows repairing of a defect portion, and that minimizes the number of pixels from which charges cannot be read out when repaired. The spherical fiber coupling lens is a bi-convex lens with positive refraction power and having a first optical surface and a second optical surface, both are aspherical surfaces while optical features of the lens satisfy the following conditions:0. Electrode terminals of the chip are connected to the wiring layer, and the opposite surface of the chip is exposed to the outside. The length of wire is in the form of a loop having a certain circumference so that when the preform is heated, the flux material disperses uniformly from the circumference of the preform for evenly treating the surface of a component on which the preform is placed. , the function X generates degree-of-freedom values of an object that is posed in a manner that satisfies parameters p. The wicker shoes are disengaged from the wall by axial translation of the cage from the sleeve to engage mutual abutment faces on the cage and shoes.