提出了一種以線陣CCD 固態傳感器取代讀數顯微鏡的航空相機鏡頭焦距測量系統。論述了系統的工作原理、軟件和硬件的設計及系統的測量誤差。結果表明,利用線陣固態圖像傳感器取代讀數顯微鏡,把特定物體經透鏡成像的大小轉換為電信號的脈寬,并利用計算機技術自動處理測量數據,從根本上克服了用讀數顯微鏡進行測量的缺陷,實現了航空相機鏡頭焦距的實時精確地在線測量。
關鍵詞: CCD ; 鏡頭; 焦距; 硬件; 軟件
Abstract : An auto2measuring system of aerial camera lens is presented , which substitutes linear array CCD sensor for read2 ing microscope to measure the focus of aerial camera lens. The principle , the hardware , the software and the measuring error of the system are described. The exprimental resuts indicate : by substituting linear array image sensor for reading miroscope , changing the height of the photo of specific object through lens into the width of electronic pulse , and progressing measuring da2 ta by computer automatically , the disadvantages of microscope can be overcome and the accurate , real2time and on2line measure2 ment of the focus of aerial camera lens can be realized.
Key words : CCD ; lens ; focus ; hardware ; software