本文選題：應(yīng)用光學(xué)　切入點(diǎn)：光學(xué)相機(jī)　出處：《電子科技大學(xué)》2017年博士論文　論文類型：學(xué)位論文

【摘要】：隨著現(xiàn)代科學(xué)技術(shù)和探測(cè)器工藝水平的不斷發(fā)展進(jìn)步,共孔徑紅外雙波段消熱差熱成像技術(shù)在空間領(lǐng)域和國(guó)防工業(yè)中的應(yīng)用越來(lái)越廣泛。共孔徑紅外雙波段消熱差光學(xué)技術(shù)考慮了對(duì)目標(biāo)探測(cè)雙波段的需求和對(duì)環(huán)境溫度變化消熱差的需求,應(yīng)用不同波長(zhǎng)的紅外波段復(fù)合探測(cè)目標(biāo),可以提高系統(tǒng)的識(shí)別能力和識(shí)別速度,同時(shí)可以在惡劣環(huán)境溫度下工作,此外在保證準(zhǔn)確獲取目標(biāo)信息提高目標(biāo)跟蹤識(shí)別能力的同時(shí),還可以降低光電探測(cè)設(shè)備的成本,減小設(shè)備的整機(jī)尺寸,減輕設(shè)備的重量,這對(duì)于空間光學(xué)儀器有著重要的意義。針對(duì)長(zhǎng)焦距寬光譜紅外雙波段消熱差探測(cè)成像系統(tǒng),本文提出了三種基于共孔徑結(jié)構(gòu)形式的光學(xué)方案,推導(dǎo)了初始結(jié)構(gòu)計(jì)算公式給出了設(shè)計(jì)實(shí)例,最后考慮工程可實(shí)現(xiàn)性采用折反式共孔徑紅外雙波段消熱差光學(xué)系統(tǒng)結(jié)構(gòu)形式,研制了滿足性能指標(biāo)的折反式共孔徑紅外雙波段消熱差光學(xué)系統(tǒng),論文主要的研究?jī)?nèi)容和貢獻(xiàn)綜述如下:(1)本文介紹了紅外雙波段消熱差熱成像技術(shù)的研究背景和意義,分析了溫度變化對(duì)紅外光學(xué)系統(tǒng)的影響,從曲率半徑、材料厚度、材料折射率、鏡片間隔、非球面參數(shù)、衍射面參數(shù)等方面系統(tǒng)分析了溫度變化對(duì)光學(xué)參數(shù)的影響,并建立了相應(yīng)的數(shù)學(xué)模型,針對(duì)溫度變化對(duì)紅外光學(xué)系統(tǒng)的影響,給出了機(jī)電主動(dòng)式、機(jī)械被動(dòng)式、光學(xué)被動(dòng)式三種消熱差方法,并從實(shí)現(xiàn)方法、性能、可靠性、重量、成本、環(huán)境穩(wěn)定性和可維修性等方面對(duì)三種消熱差設(shè)計(jì)方法進(jìn)行了對(duì)比分析。(2)本文分析了現(xiàn)代紅外消熱差光學(xué)系統(tǒng)的特點(diǎn),確定了紅外雙波段消熱差光學(xué)系統(tǒng)的幾種選型方式,提出了一種反射式長(zhǎng)焦距寬光譜共孔徑紅外雙波段消熱差光學(xué)系統(tǒng)方案,推導(dǎo)了基于四個(gè)同軸反射鏡系統(tǒng)的初始結(jié)構(gòu)計(jì)算公式,給出了設(shè)計(jì)實(shí)例。針對(duì)像質(zhì)要求較高的設(shè)計(jì)要求,又提出了一種共孔徑部分為反射鏡和透鏡相結(jié)合的長(zhǎng)焦距寬光譜共孔徑紅外雙波段消熱差光學(xué)系統(tǒng)方案,推導(dǎo)了其初始結(jié)構(gòu)計(jì)算公式,基于系統(tǒng)中出現(xiàn)的非球面拐點(diǎn)問(wèn)題,提出了一種通過(guò)求解不同半徑處矢高對(duì)半徑的一階導(dǎo)數(shù)和二階導(dǎo)數(shù)來(lái)判斷非球面是否有拐點(diǎn)的方法,并在設(shè)計(jì)的長(zhǎng)焦距寬光譜共孔徑折反射式紅外雙波段消熱差光學(xué)系統(tǒng)中進(jìn)行了實(shí)例應(yīng)用,取得了很好的效果。(3)本文分析了衍射光學(xué)元件的初級(jí)像差特性,探索了衍射光學(xué)元件的衍射效率,研究了衍射光學(xué)元件特殊的色散特性和溫度特性,基于衍射光學(xué)元件可對(duì)波面進(jìn)行任意整形的特點(diǎn),針對(duì)分光鏡在折射光路中引入的像差,提出了利用衍射光學(xué)元件來(lái)校正這些像差的思路,進(jìn)行了實(shí)例驗(yàn)證,并和球面光學(xué)元件和非球面光學(xué)元件的校正結(jié)果進(jìn)行了對(duì)照分析,驗(yàn)證了衍射光學(xué)元件校正這些像差的優(yōu)越性�；谠搩�(yōu)點(diǎn)并利用衍射光學(xué)元件特殊的色散和溫度特性,設(shè)計(jì)了一種反射/折射/衍射混合式長(zhǎng)焦距寬光譜共孔徑紅外雙波段消熱差光學(xué)系統(tǒng),取得了較好的結(jié)果。(4)本文分析了鬼像對(duì)光學(xué)系統(tǒng)成像的影響,提出了一種快速分析光學(xué)系統(tǒng)鬼像的方法,作為分析實(shí)例對(duì)折反射式長(zhǎng)焦距寬光譜共孔徑紅外雙波段消熱差光學(xué)系統(tǒng)進(jìn)行了鬼像分析。(5)本文對(duì)上述三種光學(xué)方案進(jìn)行了對(duì)比分析,考慮工程可實(shí)現(xiàn)性確定采用共孔徑紅外雙波段折反射式方案,并研制了長(zhǎng)焦距寬光譜共孔徑折反射式紅外雙波段消熱差光學(xué)系統(tǒng),進(jìn)行了系統(tǒng)集成,搭建測(cè)試平臺(tái)利用能量集中度作為評(píng)價(jià)標(biāo)準(zhǔn)對(duì)共孔徑紅外雙波段消熱差光學(xué)系統(tǒng)進(jìn)行了性能測(cè)試,驗(yàn)證了所述方案的有效性。
[Abstract]:With the development of modern science and technology and the detector technological level, application and common aperture of athermal thermal imaging technology in the field of space and defense industry more widely. A common aperture dual band infrared athermal optical technology of dual band target detection requirements and athermalization of demand the change of environmental temperature, infrared target detection using composite of different wavelengths, which can improve the system's recognition ability and speed, and can work in harsh environment, in addition to ensure accurate target information to improve the target tracking and recognition ability at the same time, but also can reduce the cost of the photoelectric detection equipment, reduce the size of equipment. Reduce the weight of the device, which is of great significance for space optical instrument. According to the length of the wide spectrum of athermal imaging detection system, this paper. The three kinds of common aperture optical scheme structure based on derivation of the initial structure gives the calculation formula of design examples, consider the implementation of the final common aperture catadioptric infrared dual band athermal optical system structure engineering, has been developed to meet the performance of common aperture catadioptric infrared dual band athermal the optical system, the main research contents and contributions are summarized as follows: (1) this paper introduces athermal thermal imaging technology research background and significance, analyzes the influence of temperature change on the infrared optical system, the radius of curvature, thickness, refractive index, lens interval, aspheric parameters, diffraction surface parameters were analyzed systematically the effect of temperature on the optical parameters, and the corresponding mathematical model is established, the effect of temperature on the infrared optical system, mechanical and electrical machinery are active are given. Type, three kinds of optical passive athermalisation methods, and the implementation method, performance, reliability, weight, cost, stability and maintainability of three kinds of analyzed athermalisation methods. (2) this paper analyzes the characteristics of thermal dissipation of modern infrared optical system, identified several the selection method of athermal optical system, proposes a reflective telephoto wide spectrum of common aperture dual band infrared athermal optical system, deduced the formula of initial structure of four coaxial mirror system based on design examples are given. According to the design requirements of high quality as required, and a common aperture part reflector and lens combination of long focal length and wide spectrum of common aperture dual band infrared athermal optical system, deduces the calculation formula of the initial structure, aspheric the turn off system based on Some problems, propose a solution by different radius vector of the radius of a high order derivative and two order derivative to determine whether there is a non spherical inflection point method and common aperture catadioptric infrared dual band athermal optical system of wide spectral distance with examples should be made in the design of long focal length. Good results. (3) this paper analyzes the aberration characteristic of diffractive optical elements, to explore the efficiency of diffractive optical elements, the dispersion characteristics and the temperature characteristics of the special characteristics of the diffractive optical element, diffractive optical elements can be arbitrary shaping of the wavefront aberration based on the spectroscope in the refraction of light in the road and put forward to correct these aberrations using diffractive optical element method, verified, and calibration results of spherical optical element and aspheric surface were compared and analyzed, verified the diffraction light The superiority of the element for correcting these aberrations. The advantages of using the dispersion and temperature characteristics of diffractive optical elements based on the special design of a reflection / refraction / diffraction hybrid telephoto wide spectrum of common aperture athermal optical system, and achieved good results. (4) this paper analyzes the ghost image the influence of the optical imaging system, this paper presents a fast method for the analysis of optical system of ghost images, as examples of para catadioptric telephoto wide spectrum of common aperture dual band infrared athermal optical system for the analysis of ghost image. (5) this paper makes a comparative analysis of the three kinds of optical scheme, considering the implementation of determine the use of common aperture dual band infrared catadioptric project, and developed a wide spectrum of long focal length common aperture catadioptric infrared dual band athermal optical system, the system integration, build the test platform can use The volume concentration is used as an evaluation criterion to test the performance of a common aperture infrared dual band heat dissipation optical system, and the effectiveness of the proposed scheme is verified.

【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN216

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