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DEVICE FOR THE PROTECTION OF AN OPERATORS EYES AGAINST INTENSIVE RADIATION
DEVICE FOR THE PROTECTION OF AN OPERATORS EYES AGAINST INTENSIVE RADIATION
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机译:保护操作者的装置防止强辐射
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摘要
1430183 Automatic control of light intensity welding masks AGA A B 15 March 1973 [27 March 1972] 12605/73 Headings G2J and G3R The intensity of light passing through a variable light transmitting region is regulated to a desired level by a control circuit including a photo-electric element, detecting the light passing through the region, and an oscillator responsive to the element to vary the voltage applied to the region and thus vary the transmission characteristics of that region. The oscillator may include a transistor 10 with multicoil transformer 9 or an operational amplifier with associated resistive-capacitive components. The region 8, e.g. a liquid crystal or a depolarizer with crossed polarizers, may be used in a protective welding screen, goggles or helmet.
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机译:1430183自动控制光强焊接面罩AGA AB 1973年3月15日[1972年3月27日] 12605/73标题G2J和G3R通过控制电路将穿过可变透光区域的光强度调节到所需水平,该控制电路包括一个光电二极管。电子元件,检测穿过该区域的光,以及响应该元件的振荡器,以改变施加到该区域的电压,从而改变该区域的透射特性。振荡器可以包括具有多线圈变压器9的晶体管10或具有相关的电阻电容组件的运算放大器。区域8,例如液晶或带有交叉偏振器的消偏振器可用于保护性焊接屏幕,护目镜或头盔。
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