1. A projector comprising:
a radiation source adapted to radiate an electromagnetic wave during an operation; and
an exterior housing adapted to house the radiation source inside,
the exterior housing includes
a first housing made of synthetic resin, the first housing having a recess that is recessed from an exterior facing surface of the first housing toward an inside of the projector, and
a second housing including a shield material adapted to block the electromagnetic wave, and disposed at a position for covering the radiation source in a plan view, the second housing being disposed over the recess of the first housing such that the recess is blocked from being open to an exterior of the projector by the second housing.
2. The projector according to claim 1, wherein
the recess is formed in the first housing, and is adapted to house the radiation source, and
the second housing is disposed on the first housing so as to close the recess.
3. The projector according to claim 2, further comprising:
a shield plate including a shield material adapted to block the electromagnetic wave.
4. The projector according to claim 3, wherein
the shield plate is attached to the first housing so as to cover the radiation source in a plan view with the recess intervening between the shield plate and the radiation source.
5. The projector according to claim 2, wherein
the radiation source includes a printed-wiring board and a plurality of circuit elements, and
the recess includes a first opening and a second opening adapted to let air inside the exterior housing flow toward the printed-wiring board and the plurality of circuit elements.
6. The projector according to claim 5, wherein
the radiation source includes a radiation section, and
the recess includes a third opening adapted to eject the air introduced from the outside of the exterior housing and flowing by the radiation section.
7. The projector according to claim 1, wherein the radiation source is a power supply unit.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus for inspecting a tubular workpiece, comprising:
a probe assembly having a transducer array positionable adjacent to an inner surface of a tubular workpiece and being configured to generate transmitted sound waves toward the inner surface and receive reflected sound waves; and
a rotation mechanism configured to rotate the probe assembly relative to the tubular workpiece in a manner such that the transducer array passes over the inner surface in a circumferential direction during transmission of the transmitted sound waves.
2. The apparatus of claim 1 wherein:
the transducer array is configured to generate the transmitted sound waves at a frequency of at least approximately 10 MHz.
3. The apparatus of claim 1 wherein:
the probe assembly is configured to substantially continuously generate the transmitted sound waves and received the reflected sound waves during rotation of the probe assembly relative to the tubular workpiece.
4. The apparatus of claim 1 further comprising:
a display device coupled to the probe assembly;
the probe assembly being configured to generate electrical signals representative of the reflected sound waves; and
the display device being configured to receive the electrical signals and generate a graphical image representative of the inner surface during rotation of the probe assembly relative to the tubular workpiece.
5. The apparatus of claim 1 wherein:
the probe assembly is configured such that the transducer array is maintained at a substantially constant distance from the inner surface during rotation of the probe assembly relative to the tubular workpiece.
6. The apparatus of claim 1 wherein:
at least one of the probe assembly and the tubular workpiece is rotatable about a rotational axis; and
the probe assembly being configured such that a location thereof is radially adjustable relative to the rotational axis.
7. The apparatus of claim 1 wherein:
the transducer array includes a plurality of transducer elements arranged as a linear array;
the rotation mechanism has a rotational axis; and
the linear array has an array longitudinal axis being maintained in generally parallel relation to the rotational axis during rotation of the probe assembly relative to the tubular workpiece.
8. The apparatus of claim 7 wherein:
the tubular workpiece including a tube end having a fitting joined to the tube end at a joint section of the tube end; and
the linear array having an axial length such that the transducer elements are spaced pass over the joint section and at least a portion of a non joint section of the tube end.
9. The apparatus of claim 1 further comprising:
a clamping mechanism configured to clamp the tubular workpiece in a fixed position such that a tube end of the tubular workpiece is maintained in substantially centered relation to a rotational axis of the rotation mechanism during rotation of the probe assembly relative to the tubular workpiece.
10. The apparatus of claim 1 further comprising:
a container configured to contain a liquid and being sized and configured to immerse the probe assembly a tube end of the tubular workpiece in the liquid during rotation of the probe assembly relative to the tubular workpiece.
11. An apparatus for inspecting a tubular workpiece, comprising:
a probe assembly having a transducer array positionable adjacent to an inner surface of a tube end of a tubular workpiece and being configured to generate transmitted sound waves toward the inner surface and receive reflected sound waves; and
a rotation mechanism configured to rotate the probe assembly relative to the tubular workpiece in a manner such that the transducer array passes over the inner surface in a circumferential direction during transmission of the transmitted sound waves; and
a container configured to contain a liquid and being sized and configured to immerse the probe assembly and the tube end in the liquid during rotation of the probe assembly relative to the tubular workpiece.
12. A method of inspecting a tubular workpiece, comprising:
positioning a probe assembly adjacent to an inner surface of a tubular workpiece, the probe assembly having a transducer array;
generating transmitted sound waves propagating toward the tubular workpiece;
receiving, at the probe assembly, reflected sound waves in response to impingement of the transmitted sound waves;
rotating the probe assembly relative to the tubular workpiece such that the transducer array passes over the inner surface in a circumferential direction during generation of the transmitted sound waves; and
detecting a deformation of the tubular workpiece during rotation of the probe assembly.
13. The method of claim 12, wherein the step of detecting a deformation comprises:
measuring deformation of a tube end of the tubular workpiece along at least one of an axial direction and a circumferential direction.
14. The method of claim 12 wherein the step of generating transmitted sound waves comprises:
generating the transmitted sound waves at a frequency of at least approximately 10 megahertz.
15. The method of claim 12 wherein the step of generating transmitted sound waves and receiving reflected sound waves comprises:
generating the transmitted sound waves and receiving the reflected sound waves on a substantially continuous basis during rotation of the probe assembly relative to the tubular workpiece.
16. The method of claim 12 wherein the step of generating transmitted sound waves and receiving reflected sound waves comprises:
generating, using the probe assembly, electrical signals representative of the reflected sound waves;
receiving, at a display device, the electrical signals; and
generating, on the display device, a graphical image representative of the inner surface during rotation of the probe assembly relative to the tubular workpiece.
17. The method of claim 12 further comprising the step of:
maintaining the transducer array at a substantially constant distance from the inner surface during rotation of the probe assembly relative to the tubular workpiece.
18. The method of claim 12 further comprising the steps of:
rotating at least one of the probe assembly and the tubular workpiece about a rotational axis; and
radially adjusting a radial location of the probe assembly relative to the rotational axis such that the probe assembly is located at a predetermined distance from the inner surface.
19. The method of claim 12 further comprising the step of:
clamping the tubular workpiece such that a tube end of the tubular workpiece is maintained in substantially centered relation to a rotational axis of the probe assembly during rotation thereof.
20. The method of claim 12 further comprising the step of:
immersing in liquid the probe assembly and an area under inspection of the tubular workpiece; and
coupling, using the liquid, the transmitted sound waves from the probe assembly to the inner surface.