物理通报
物理通報
물리통보
PHYSICS BULLETIN
2015年
2期
63-64,65
,共3页
王芳芳%张景红%张轶炳%王超
王芳芳%張景紅%張軼炳%王超
왕방방%장경홍%장질병%왕초
透镜焦距%高斯成像公式%电阻率%欧姆定律
透鏡焦距%高斯成像公式%電阻率%歐姆定律
투경초거%고사성상공식%전조솔%구모정률
focal length%Gaussian imaging formula%resistivity%ohm′s law
传统测量透镜焦距的方法通过肉眼读数粗测，误差较大。电测法测量透镜焦距通过光电传感器将光信号转变成电信号，结合电阻率定义及欧姆定律推导出利用电信号直接计算透镜焦距的公式。该方法设计思路简单，操作方便，且能准确有效地测量透镜的焦距。
傳統測量透鏡焦距的方法通過肉眼讀數粗測，誤差較大。電測法測量透鏡焦距通過光電傳感器將光信號轉變成電信號，結閤電阻率定義及歐姆定律推導齣利用電信號直接計算透鏡焦距的公式。該方法設計思路簡單，操作方便，且能準確有效地測量透鏡的焦距。
전통측량투경초거적방법통과육안독수조측，오차교대。전측법측량투경초거통과광전전감기장광신호전변성전신호，결합전조솔정의급구모정률추도출이용전신호직접계산투경초거적공식。해방법설계사로간단，조작방편，차능준학유효지측량투경적초거。
Traditional method for measuring lens focal length is to find the brightest facula with naked eyes ,thus the data should be coarse with big error .Electrical measuring method transform light signal into electrical signal by a photoelectric sensor .Combining ohm′s law with resistivity ,we deduce a formula to calculate the focal length with electrical signal directly .To measure the focal length of lens accurately and efficiently ,this method has strong maneuverability .
