一、新型光电二极管西门子公司使用光电二极管不仅作为指示元件,也朝着用于刻度,按钮等的照明跨了一步。投入市场上有光强度30毫烛光,工作电流10毫安的绿色光电二极管LD57C,所辐射的表面是在亚磷酸镓的半导体晶体上。这个光电二极管的辐射强度比目前所知的要大得多,此外,它取决于没有涂漆和没有扩散器的塑料外壳(管座长度8.6毫米,直径5.1毫米)。所使用的半导体材料是经精心选择的。二、激光束的照像为了研究由于负载引起的材料变形,早已采用了照像方法。此时,取自测量象上的点在加机械负载之前和加载时被照像到一个底板 First, the new photodiode Siemens using photodiodes not only as an indicator of the components, but also toward the graduation, buttons and other lighting step by step. Put on the market a light intensity of 30 milliampere candle, the working current of 10 mA green photodiode LD57C, the radiation surface is in the gallium phosphide semiconductor crystal. The photodiode has a radiant intensity much greater than what is known so far. In addition, it depends on an unpainted plastic housing without a diffuser (stem length 8.6 mm, diameter 5.1 mm). The semiconductor material used is carefully selected. Second, the laser beam camera In order to study the material deformation caused by the load, has long been used in photographic methods. At this point, the points taken from the measurement image are photographed to a base plate before and during mechanical loading