Pepper M G, Mountford P J, Ng S
Photodermatol. 1984 Dec;1(6):302-6.
The design, construction and performance of an ultraviolet radiation (UVR) pre-set dose meter is described. The meter simultaneously displays irradiance, dose, and elapsed time, and incorporates a calibrated variable gain control to permit use with detectors of varying sensitivity. The meter has been developed to permit the automatic administration of UVR dose in photosensitivity testing. The UVR is generated by a Xenon lamp and delivered to the patient via a monochromator and liquid filled light guide. A beam-splitter in the light guide applicator diverts a small fraction (9%) of the UVR onto a photo-diode detector connected to the meter. When the dose recorded by the meter reaches the pre-set value the meter activates a solenoid which closes the monochromator exit slit shutter. This on-line control of the dose ensures that any fluctuations in irradiance are compensated so that the pre-set test dose is always administered to within the 1% accuracy of the instrument.
本文描述了一种紫外线（UVR）预设剂量计的设计、构造和性能。该剂量计能同时显示辐照度、剂量和经过时间，并设有校准可变增益控制，以便与灵敏度不同的探测器配合使用。开发该剂量计是为了在光敏性测试中实现紫外线剂量的自动给药。紫外线由氙灯产生，并通过单色仪和充液光导传递给患者。光导施加器中的分束器将一小部分（9%）紫外线转移到连接到剂量计的光电二极管探测器上。当剂量计记录的剂量达到预设值时，剂量计会激活一个螺线管，该螺线管会关闭单色仪出射狭缝快门。这种剂量的在线控制可确保辐照度的任何波动都得到补偿，从而使预设测试剂量的给药精度始终保持在仪器的1%以内。
