| 摘要 |
<p>A portion 41 on the light exit end surface 40b side of a fiber optic plate 40 includes a first portion 41a and a second portion 41b. The first portion 41a corresponds to a peripheral portion 23 of a semiconductor photodetecting element 20. The second portion 41b corresponds to a thin portion 25 of the semiconductor photodetecting element 20 and projects more toward the semiconductor photodetecting element 20 than the first portion 41a. A height of a step made between the first portion 41a and the second portion 41b of the fiber optic plate 40 is lower than a height of a step made between the thin portion 25 and the peripheral portion 23 of the semiconductor photodetecting element 20. The semiconductor photodetecting element 20 and the fiber optic plate 40 are fixed by a resin 45, in a state in which the first portion 41 a and the peripheral portion 23 are in contact and in which the second portion 41b and the thin portion 25 are separated.</p> |
