| 摘要 |
PROBLEM TO BE SOLVED: To solve problems wherein, if a transparent dose detector is mounted on the front face of a collimator, the illuminance of the irradiation field is lowered by the absorption of the light which makes adjustment of the position and dimension of the irradiation field difficult and, if the illuminance of the irradiation field is intensified by increasing the voltage impressed on a lamp, the service life of the lamp is extremely shortened. SOLUTION: This radiographic equipment is provided with an illuminance changeover relay 9 for changing the voltage to be impressed on the lamp, changes over the lamp illuminance whether pushing a standard illuminance selecting button 1 or a high illuminance selecting button, and restricts the irradiation time by a time set in timers provided according to the respective buttons. COPYRIGHT: (C)2007,JPO&INPIT
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