CAJ | 학술논문

介绍了大口径球面反射镜曲率半径的传统测量方法，提出了利用组合测杆结合激光干涉仪测量球面反射镜曲率半径的新方法。首先利用激光干涉仪检测球面反射镜的面型，调整干涉仪与被测镜的位置，使被测镜达到零条纹干涉状态，然后架设合理长度组合测杆，调整组合测杆靠近干涉仪端测量球头的位置，使之达到零条纹干涉状态，再使组合测杆另一端测头与镜面接触完成测量，通过计算分析即可得到被测球面镜的曲率半径。对该方法的基本测量原理进行了研究分析，并对口径为600 mm的望远镜球面主镜的曲率半径进行了多次测量，测得其曲率半径均值为2836.774 mm，标准偏差为0.071 mm。最后对该方法的测量不确定度进行了分析，找出了影响测量精度的主要因素，合成标准不确定度为0.061 mm。
개소료대구경구면반사경곡솔반경적전통측량방법，제출료이용조합측간결합격광간섭의측량구면반사경곡솔반경적신방법。수선이용격광간섭의검측구면반사경적면형，조정간섭의여피측경적위치，사피측경체도령조문간섭상태，연후가설합리장도조합측간，조정조합측간고근간섭의단측량구두적위치，사지체도령조문간섭상태，재사조합측간령일단측두여경면접촉완성측량，통과계산분석즉가득도피측구면경적곡솔반경。대해방법적기본측량원리진행료연구분석，병대구경위600 mm적망원경구면주경적곡솔반경진행료다차측량，측득기곡솔반경균치위2836.774 mm，표준편차위0.071 mm。최후대해방법적측량불학정도진행료분석，조출료영향측량정도적주요인소，합성표준불학정도위0.061 mm。
Conventional testing methods for the curvature radius of spherical mirror with large aperture are in-troduced briefly , and a novel method using combined rods and laser interferometer is proposed .Firstly, the surface figure of spherical mirror is tested with laser interferometer .The position of interferometer and tested mirror is adjusted to make the focus of the exit wave front and the center of curvature of tested mirror to be confocal .Then the suitable combined rods are setup , and the position of probe spheric head which is close to interferometer is adjusted to make the focus of the exit wave front and the center of the probe spheric head con -focal.Next, another probe spheric head is adjusted to contact the surface of the tested mirror .The curvature radius of the spheric mirror can be calculated by the data .The basic principle of the testing method is ana-lyzed.A telescope spheric primary mirror with a aperture of 600 mm is tested many times with this method . The average radius of curvature is calculated to be 2 836.774 mm,and the root mean square is 0.071 mm.Fi-nally , the measurement uncertainty of this method is analyzed , and the main factors affecting the measurement accuracy are found out , and the composed standard uncertainty is 0.061 mm.