本文選題：光學(xué)設(shè)計 + 雙波段��； 參考：《光子學(xué)報》2016年10期

【摘要】：為了提高變焦光學(xué)系統(tǒng)在復(fù)雜環(huán)境下的高分辨率探測能力,解決現(xiàn)有多波段光學(xué)系統(tǒng)中光路轉(zhuǎn)換和波段切換耗時長、系統(tǒng)反應(yīng)慢、不同波段目標信息存在差異的問題,設(shè)計了一種可見光(0.38~0.76μm)、中紅外(3~5μm)共口徑連續(xù)共變焦光學(xué)系統(tǒng),系統(tǒng)工作焦距為7.52~98.35mm,變焦比為13×.基于正組補償變焦理論分析了任意變焦位置處可見光、中紅外變焦比的差異及其變化規(guī)律,推導(dǎo)了三片薄透鏡消色差理論和雙波段焦距補償表達式.對變倍組和補償組的光焦度進行合理匹配,使系統(tǒng)在任意變焦位置處的焦距及變焦比都相同,提高了雙波段目標信息的一致性.根據(jù)使用要求,采用光學(xué)被動式完成雙波段光學(xué)系統(tǒng)在-40~+60℃溫度范圍內(nèi)的消熱差設(shè)計.設(shè)計結(jié)果表明,系統(tǒng)結(jié)構(gòu)緊湊,反應(yīng)速度快,整體成像質(zhì)量良好,可實現(xiàn)晝夜全天候工作.
[Abstract]:In order to improve the high resolution detection ability of zoom optical system in complex environment, the problems of long time consumption of optical path conversion and band switching, slow system response and difference of target information in different bands are solved in existing multi-band optical systems. A continuous confocal optical system of visible light (0.38 ~ 0.76 渭 m),) was designed. The working focal length of the system is 7.52 ~ (98.35) mm and the zoom ratio is 13 脳. Based on the positive group compensation zoom theory, the difference between visible and middle infrared zoom ratio at any zoom position and its variation law are analyzed. The theory of achromatic aberration of three thin lenses and the double band focal length compensation expression are derived. In order to make the system have the same focal length and zoom ratio at any zoom position, the system can improve the consistency of the information of the dual-band target by the reasonable matching of the optical focus of the variable magnification group and the compensation group, so as to make the focal length and zoom ratio of the system at any zoom position the same. According to the requirements of application, the design of heat dissipation difference between -40 鈩，

本文編號：2057005