利用線陣CCD自動(dòng)測(cè)量航空相機(jī)鏡頭的焦距

提出了一種以線陣CCD 固態(tài)傳感器取代讀數(shù)顯微鏡的航空相機(jī)鏡頭焦距測(cè)量系統(tǒng)。論述了系統(tǒng)的工作原理、軟件和硬件的設(shè)計(jì)及系統(tǒng)的測(cè)量誤差。結(jié)果表明,利用線陣固態(tài)圖像傳感器取代讀數(shù)顯微鏡,把特定物體經(jīng)透鏡成像的大小轉(zhuǎn)換為電信號(hào)的脈寬,并利用計(jì)算機(jī)技術(shù)自動(dòng)處理測(cè)量數(shù)據(jù),從根本上克服了用讀數(shù)顯微鏡進(jìn)行測(cè)量的缺陷,實(shí)現(xiàn)了航空相機(jī)鏡頭焦距的實(shí)時(shí)精確地在線測(cè)量。
關(guān)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