Resources Contact Us Home
Laser emission head, laser beam transmission device, laser beam transmission device adjustment method and preventive maintenance/repair device of structure in nuclear reactor

Image Number 13 for United States Patent #6881925.

A laser emitting head for irradiating a portion to be machined with laser beams outputted from a laser unit (624) incorporates an emitting head body having a light guide member (625) in the head for guiding the laser beams; a light converging lens (677) for converging the laser beams transmitted from the light guide member in the head; a reflecting mirror (678) for irradiating the portion to be machined with the converged laser beams; mirror rotating means (684) for holding the reflecting mirror to be rotative around the optical axis of the laser beam; distance-adjustment means (674) for adjusting the relative distance between the reflecting mirror and the converging lens; and moving means (665) for moving the reflecting mirror and the converging lens such that the relative distance is maintained so that the light guide member in the head. The converging lens and the reflecting mirror can be introduced/discharged with respect to a portion to be machined and formed in a narrow gap in an incore structure. As a result, a preventive-maintenance/repair operation using laser beams and arranged to be performed in a narrow gap in the incore structure can safely and efficiently be performed.

  Recently Added Patents
End-of-session authentication
Browsing or searching user interfaces and other aspects
Vacuum cleaner filter adapter ring
Semiconductor unit having a power semiconductor and semiconductor apparatus using the same
Systems and methods for velocity profile based approach to point control
Synergistic compositions for the treatment of topical viral infections
Solid-state imaging device and imaging apparatus
  Randomly Featured Patents
Touch panel type operation device, touch panel operation method, and computer program
Pickup truck tonneau cover
Work box frame
Fluorescence polarization immunoassay for amphetamine/methamphetamine
Device for pick-up and assembly of elements of identification of cables and electrical appliances
Method of stimulating a Hypoglossal nerve for controlling the position of a patient's tongue
Nemesia plant named `Intraired`
Method and apparatus for testing transmitters in optical fiber networks
Lift and rotate assembly for use in a workpiece processing station and a method of attaching the same
Surface acoustic wave (saw) devices having series-connected inter-digital transducers