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当代微机终端(Visual Video DisplayTerminal:VDT)及电视机的普遍应用,视屏辐射剂量及其对人眼部是否造成危害的问题,越来越为人们所关注。本文就此问题进行了调查研究,兹报导如下:工作方法与对象(一)视屏辐射剂量的测量:采用热释光剂量片测量法,应用片状氟化锂热释光元件((?)5mm),测前每个元件均逐个进行刻度,所得数据减去同一实验室中本底均值,分别测定了美制机型为VT241,IVAS,VT220及PC 计算机终端(彩色或黑白,视屏分别为12—21时)的辐射剂量,包括视屏表面、距10cm、20cm、30cm 的辐射剂量。数值用毫
The widespread application of modern video terminals (Visual Video Display Terminals: VDT) and televisions, and the problem of whether the screen radiation dose is harmful to the eyes of the human eye has drawn more and more attention. This article conducted a survey on this issue, it is reported as follows: Work methods and objects (A) of the screen radiation dose measurement: The use of thermoluminescence dose measurement method, the use of flaky lithium fluoride thermoluminescence element ((? , Each component was measured one by one before the test, the resulting data minus the same background average in the laboratory were measured for the US model for VT241, IVAS, VT220 and PC computer terminal (color or black and white, respectively, screen 12-21 ) Radiation dose, including the screen surface, 10cm, 20cm, 30cm radiation dose. Numerical milli