一种照相机成像平面照度均匀度检测系统_蔡怀宇.pdf

265 Vol. 26 No. 5 2 0 0 0 9 OPT ICAL TECHNIQUE Sept. 2000 : 1002- 1582(2000) 05-0 92-0 X 一种照相机成像平面照度均匀度检测系统 蔡怀宇, 刘铁根, 傅维乔, 李贺桥 ( , 00072) : , , GaAsP A/ D , : ; ; ; : TB85211; O4 212 : A A system f or examining the illumi nati on uniformity of camera imaging planes CAI Hua-i yu, LIU Tie- gen, FU We-i qiao, LI He-qiao ( College of Precision Instrument and Optoelectronics Engineering, Tianjing University , Tianjing 00072, China) Abstract: Based on discussing the influence factors of illumination distribution on camera imaging planes, an automatic sys- tem for examining the illumination uniformity of camera imaging planes which is controlled by a single-chip computer is present- ed. In the system, a GaAsP photodiode liner array is used to scan the w hole imaging plane driven by a step-by-step motor, A/ D channels are designed to change analogues to digits and indicating devices or a printer is adopted to display the results. A group of experiment results is offered at last. Key words: camera imaging plane; illumination uniformity of imaging plane; single-ship computer 1 2 , , , E [2] , , PB L - f c 2 4 E = 4A 2( f c ) cos H ( 1) ; B ; L ; f c; H , ,