| 摘要 |
A laser (1) has its laser head (3) connected to its base (2) by hinges having a common axis (R) parallel to the laser beam axis (4a). When the lamp for energizing the laser rod must be replaced, the head (3) can be pivoted about the axis (R) to a position in which the lamp can easily be removed from its cavity and a new lamp fitted therein, the removal and fitting being accomplished by moving the lamps along their axis (5a).
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