Patent ID: 8411823

Claim:
A radiation grid comprising: an absorber having strip absorbing foil strips that extend in an extension direction for absorbing radiation arranged in an arrangement direction perpendicular to the extension direction, and having an incident plane where radiation enters and an emitting plane where radiation emits; a first covering member for covering one plane of the incident plane or the emitting plane of the absorber; a second covering member for covering the other plane other than the one plane of the absorber; a first joining member arranged at a contact portion of each absorbing foil strip constituting the absorber and the first covering member for providing integration of both thereof; and a second joining member arranged at a contact portion of each absorbing foil strip constituting the absorber and the second covering member for providing integration of both thereof, a gap being provided between the first joining member and the second joining member, and the first joining member having a thickness larger at both ends thereof in the extension direction than a center portion between the both ends.