Radiation detecting device
A radiation detecting device includes a radiation detector and a supporter. The radiation detector includes a substrate that has flexibility and a semiconductor element formed on an imaging surface of the substrate. The supporter is formed of foam and supports the radiation detector.
1. A radiation detecting device, comprising:
a radiation detector that includes a flexible substrate and a semiconductor element formed on an imaging surface of the substrate;
a supporter that is formed of foam and that supports the radiation detector;
a casing that houses the radiation detector, the casing including a front part facing the imaging surface and a rear part facing the front part with the radiation detector arranged therebetween; and
an electric circuit;
wherein:
the supporter is placed between the radiation detector and the rear part,
the supporter includes:
a first supporter having (i) a front-facing surface that is in contact with a rear-facing surface of the radiation detector and (ii) a rear-facing surface that is in contact with the electric circuit, and
a second supporter comprising a plurality of extending parts that extend from the rear-facing surface of the first supporter to the rear part, wherein each of the extending parts has (i) a front-facing surface that is in contact with the rear-facing surface of the first supporter at a portion of the rear-facing surface where the electric circuit is not provided, (ii) a lateral surface that faces the electric circuit, and (iii) a rear-facing surface that is in contact with the rear part of the casing, and
a recess part in which the electric circuit is arranged, wherein the recess part is defined by a portion of the rear-facing surface of the first supporter that is in contact with the electric circuit and the lateral surfaces of adjacent extending parts among the extending parts of the second supporter, the lateral surfaces of the adjacent extending parts facing each other with the electric circuit arranged therebetween.
2. The radiation detecting device according to claim 1 , wherein part of the supporter is placed without a gap between the radiation detector and the rear part.
3. The radiation detecting device according to claim 1 , wherein part of the supporter is placed without a gap along an opposite surface of the radiation detector from the imaging surface.
4. The radiation detecting device according to claim 1 , wherein the electric circuit is attached to the supporter.
5. The radiation detecting device according to claim 4 , wherein
the radiation detector, the supporter, and the electric circuit are fixed to each other and constitute an internal module, and
the internal module is fixed to at least one among an inner surface of the front part, an inner surface of the rear part, and an inner surface of a lateral part that connects the front part and the rear part.
6. The radiation detecting device according to claim 1 , further comprising:
a heat diffusion sheet positioned so as to face an element among elements constituting the electric circuit, the element generating heat when the electric circuit is active.
7. The radiation detecting device according to claim 1 , wherein the casing is made of carbon fiber reinforced resin, glass fiber reinforced resin, light metal, or a light metal-containing alloy.
8. The radiation detecting device according to claim 1 , further comprising at least one electromagnetic-field shielding layer placed at at least one of an imaging surface-side and an opposite surface-side from the imaging surface-side.
9. The radiation detecting device according to claim 1 , wherein the supporter is formed of at least two types of foam that have different degrees of rigidity.
10. The radiation detecting device according to claim 9 , wherein:
the first supporter includes:
a first foam constituting a surface layer part that is in contact with at least one of the radiation detector and the second supporter, and
a second foam constituting a core part that is in contact with the surface layer part in a direction in which the radiation detector and the second supporter are arranged, and
an expansion ratio of the first foam is less than an expansion ratio of the second foam.
11. The radiation detecting device according to claim 9 , wherein:
the second supporter includes:
a first foam constituting a surface layer part that extends from the first supporter to the rear part, and
a second foam constituting a core part that is in contact with the surface layer part in a direction in which an inner surface of the rear part extends, and
an expansion ratio of the first foam is less than an expansion ratio of the second foam.
12. The radiation detecting device according to claim 1 , wherein the supporter is integrally formed of one piece of foam.
13. A radiation detecting device, comprising:
a radiation detector that includes a flexible substrate and a semiconductor element formed on an imaging surface of the substrate;
a supporter that is formed of foam and that supports the radiation detector;
a casing that houses the radiation detector, the casing including a front part facing the imaging surface, a rear part facing the front part with the radiation detector arranged therebetween, and a lid; and
an electric circuit;
wherein:
the supporter is placed between the radiation detector and the rear part,
the rear part has a recess part that is recessed towards an inside of the casing from an outer surface of the rear part, and the lid is configured to fit an opening part of the recess part;
the electric circuit is housed in the recess part and enclosed therein by the lid covering the opening part, an outer surface of the lid being flush with an outer-most portion of the outer surface of the rear part,
the supporter has a front-facing surface that faces the radiation detector and an opposite surface that is in contact with an inner surface of the rear part,
the opposite surface of the supporter has a same shape as the rear part such that the supporter fills a whole space between the radiation detector and the inner surface of the rear part in a direction in which the radiation detector and the supporter are arranged, and
the rear part of the casing is interposed between the supporter and the electric circuit housed in the recess part.
14. The radiation detecting device according to claim 13 , further comprising:
a heat diffusion sheet positioned so as to face an element among elements constituting the electric circuit, the element generating heat when the electric circuit is active.
15. The radiation detecting device according to claim 13 , wherein the casing is made of carbon fiber reinforced resin, glass fiber reinforced resin, light metal, or a light metal-containing alloy.
16. The radiation detecting device according to claim 13 , further comprising at least one electromagnetic-field shielding layer placed at at least one of an imaging surface-side and an opposite surface-side from the imaging surface-side.
17. The radiation detecting device according to claim 13 , wherein the supporter is formed of at least two types of foam that have different degrees of rigidity.
18. The radiation detecting device according to claim 17 , wherein:
the supporter includes:
a first supporter having the front-facing surface that is in contact with the radiation detector and another surface that is in contact with the rear part, said another surface constituting a first part of the opposite surface of the supporter, and
a second supporter having a surface that is in contact with the first supporter and another surface that is in contact with the rear part, said another surface constituting a second part of the opposite surface of the supporter, and
the first supporter includes:
a first foam constituting a surface layer part that is in contact with at least one of the radiation detector and the second supporter, and
a second foam constituting a core part that is in contact with the surface layer part in a direction in which the radiation detector and the second supporter are arranged, and
an expansion ratio of the first foam is less than an expansion ratio of the second foam.
19. The radiation detecting device according to claim 17 , wherein:
the supporter includes:
a first supporter having the front-facing surface that is in contact with the radiation detector and another surface that is in contact with the rear part, said another surface constituting a first part of the opposite surface of the supporter, and
a second supporter having a surface that is in contact with the first supporter and another surface that is in contact with the rear part, said another surface constituting a second part of the opposite surface of the supporter, and
the second supporter includes
a first foam constituting a surface layer part that extends from the first supporter to the rear part, and
a second foam constituting a core part that is in contact with the surface layer part in a direction in which an inner surface of the rear part extends, and
an expansion ratio of the first foam is less than an expansion ratio of the second foam.
20. The radiation detecting device according to claim 13 , wherein the supporter is integrally formed of one piece of foam.