利用测节仪测量透镜组基点位置的变化规律

摘要

分析透镜组位于测节仪不同位置时的成像情况，得出转动测节仪前后像点的位置随像方节点与转轴距离变化的规律，从而更有目的性的调节透镜组的位置，使透镜组的像方节点与转轴重合，测量出透镜组的基点，并加深对透镜组基点的理解和测节器的认识。%T he imaging situations of the compound lens at different positions on the nodal slide were analyzed and a conclusion was obtained that the positions of imaging point before and after rota‐ting nodal slide were changed with the distance between the rotational axis of the nodal slide and the image nodal point .By the rule ,the positions of compound lens were adjusted more easy to make the image nodal point overlap with the rotational axis ,then the cardinal point of compound lens was meas‐ured accurately .