| 摘要 |
A SHUTTER UNIT CAPABLE OF PREVENTING THE SCATTERING OF THE LASER BEAM UPON CLOSING THE OPTICAL PATH OF THE LASER BEAM AND CAPABLE OF BEING MINIATURIZED, AND A LASER PROCESSING DEVICE EMPLOYING SUCH ASHUTTER UNIT. IN A SHUTTER UNIT 1, WHEN THE OPTICAL PATH OF THE LASER BEAM L IS OPENED, A ROTATING MEMBER 57 IS ROTATED AROUND AN AXIS LINE ( ), AND AN OPENING 61 IS POSITIONED ON AN OPTICAL AXIS (ALPHA) SO AS TO PASS THE LASER BEAM L THERETHROUGH. MEANWHILE, WHEN THE OPTICAL PATH OF THE LASER BEAM L IS CLOSED, THE ROTATING MEMBER 57 IS ROTATED AND A REFLECTIVE SURFACE 62 IS POSITIONED ON THE OPTICAL AXIS (ALPHA) SO AS TO REFLECT THE LASER BEAM L. HERE, SINCE THE REFLECTED LASER BEAM L IS ABSORBED BY AN OPTICAL ABSORPTION MEMBER 63, IT IS POSSIBLE TO PREVENT THE SCATTERING OF THE LASER BEAM L WHEN THE OPTICAL PATH OF THE LASER BEAM L IS CLOSED. IN ADDITION, SINCE THE OPENING 61 AND REFLECTIVE SURFACE 62 ARE BOTH FORMED ON THE ROTATING MEMBER 57 WHICH ROTATES AROUND THE AXIS LINE ( ) THAT IS SUBSTANTIALLY ORTHOGONAL TO THE OPTICAL AXIS (ALPHA), IT IS POSSIBLE TO REDUCE THE SIZE OF THE SHUTTER UNIT 1.(FIG 3)
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