Patent ID: 8735838

Claim:
A radiation detecting apparatus comprising: a first detector that detects incidence of radiation and has a radiation incident surface to which radiation enters and a light emission surface from which light is taken out when radiation enters to the radiation incident surface, the radiation incident surface being arranged substantially perpendicular to a direction of the incidence of radiation and the light emission surface being arranged substantially parallel to the direction of the incidence of radiation; a plate-shaped detection substrate including a second detector that detects an incident position of the radiation to at least the first detector and has a light receiving surface to which the light taken out from the light emission surface enters, and a first terminal that is electrically connected to the second detector, the light receiving surface of the second detector being arranged parallel to the direction of the incidence of radiation; a wiring substrate including a second terminal disposed on a main surface of the wiring substrate and an external terminal that is electrically connected to the second terminal; and a connecting member that is made of solder or a conductive adhesive and electrically connects the first terminal and the second terminal, the first terminal being arranged at one end of the main surface of the plate-shaped detection substrate, the detection substrate being mounted on the wiring substrate such that the main surface of the plate-shaped detection substrate is substantially perpendicular to the main surface of the wiring substrate in a state that the one end faces the wiring substrate and such that the first terminal is substantially perpendicular to the second terminal, and the first detector being arranged opposite to the main surface of the detection substrate, wherein the connecting member fixes the detection substrate to the wiring substrate, such that the main surface of the detection substrate is fixed substantially perpendicularly to the wiring substrate.