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生产中,当采用测角目镜和双像目镜联合测量时,由于它们的中心不重合,在更换目镜对被测物测量时,测得的各坐标将会时常改变,这就需要将双像目镜测出的各点坐标值进行运算和修正,以统一到测角目镜上来。例如在万工显上用它们联合作直角坐标或作极坐标等测量时,就一定要做这些运算和修正工作。一、双像棱镜的成像原理与其结构的关系双像棱镜的成像原理如图1所示。
Production, when combined with gonioscopic and binocular eyepiece measurement, due to their centers do not coincide, the replacement of the eyepiece measured the measured object, the measured coordinates will change from time to time, which requires the double eyepiece Measured the coordinates of the various points of the calculation and correction, in order to unify the goniometer eyepiece up. For example, when all the units are used in conjunction with rectangular coordinates or polar coordinates and other measurements, we must do these calculations and correction work. First, the two prism imaging principle and the relationship between the structure The principle of double-image prism imaging shown in Figure 1.