CAJ | 학술논문

针对空间光学系统长焦距、大视场、小型化、轻量化、大相对孔径、高成像质量的特点和发展趋势,通过对非球面反射式光学系统设计模型及其理论参数的研究分析,在共轴三反射式光学系统的基础上,提出了一种离轴三反射式红外光学系统的设计方法.利用ZEMAX求解并优化,设计一个焦距f=1000 mm,视场角为4°,D/f=1/4的反射式离轴光学系统.使该系统在50 lp/mm空间频率处传函达到0.3以上,接近衍射极限,全视场弥散斑控制在10μm以内,满足空间照相机的需要.该系统克服了共轴三反存在中心遮挡的问题,提高了系统的像质.
침대공간광학계통장초거、대시장、소형화、경양화、대상대공경、고성상질량적특점화발전추세,통과대비구면반사식광학계통설계모형급기이론삼수적연구분석,재공축삼반사식광학계통적기출상,제출료일충리축삼반사식홍외광학계통적설계방법.이용ZEMAX구해병우화,설계일개초거f=1000 mm,시장각위4°,D/f=1/4적반사식리축광학계통.사해계통재50 lp/mm공간빈솔처전함체도0.3이상,접근연사겁한,전시장미산반공제재10μm이내,만족공간조상궤적수요.해계통극복료공축삼반존재중심차당적문제,제고료계통적상질.
The developing trend and characteristics of the space optical system are long focal length, large view field, light weight, small dimension, large relative aperture and high image quality. A method of designing off-axial three-mirror anastigmat (TMA) infrared optical system is presented, through analyzing the design model and parameters of aspheric reflective optical system, based on coaxial three-reflective optical system. The structural parameters of the system can be solved and optimized by ZEMAX. Then the off-axial three-mirror system with focal length of 1000 mm, field of view of 4° and relative aperture of 1/4 is designed. After optimization, the modulation transform function (MTF) of field of view is 0.3 at 50 lp/mm, and the full field diffusion plaque is controlled into 10μm. This system overcomes the central shielding problem which exists in coaxial TMA system. So the image quality of the system is greatly improved.