测量金刚石压头顶端球面半径,一般需要300X以上的投影仪,但这种仪器国内较少,而且物镜的工作距离很短,给测量带来不便.我们在工作中利用50X或100X的普通投影仪,在投影屏上加一只6X的放大镜进行测量,取得了很好的效果.这种方法也可以应用于其他投影测量工作. 这种方法只化费很少的钱,就将分辨力提高了很多;而且由于投影和放大图一起被放大,因此所 Measuring the radius of the top surface of the diamond indenter generally require more than 300X projector, but this instrument is less domestic, and the working distance of the objective lens is very short, which brings inconvenience to the measurement.We use 50X or 100X ordinary projector , In the projection screen plus a 6X magnifying glass for measurement, and achieved good results.This method can also be applied to other projection measurement work.This method only cost a small amount of money, will increase the resolution A lot; and because the projection is enlarged together with the enlarged image, so