CAJ | 학술논문

为验证液晶自适应光学成像技术校正大气湍流所引起的波前像差的有效性,提高光学系统的能量利用率,应用Zemax软件设计出了与1 200 mm望远镜匹配的开环液晶自适应光学系统.针对开环自适应光学系统探测光路和校正光路自身的特殊要求,制定了具体的公差原则,并应用Zemax软件进行了公差分析.分析表明,设计的自适应光学系统具备较宽松的公差条件,容易加工和装调.评价了该光学系统的成像性能,结果表明,设计的自适应光学系统的MTF曲线接近衍射极限,光学传递函数的模在50 lp/mm时可达到0.4,而成像CCD的极限分辨率为31 lp/mm,充分地利用了CCD相机的分辨资源.该自适应光学系统与1 200 mm望远镜对接匹配后的组合焦距为19.9 m,F数为16,PV值为0.031 4λ.
위험증액정자괄응광학성상기술교정대기단류소인기적파전상차적유효성,제고광학계통적능량이용솔,응용Zemax연건설계출료여1 200 mm망원경필배적개배액정자괄응광학계통.침대개배자괄응광학계통탐측광로화교정광로자신적특수요구,제정료구체적공차원칙,병응용Zemax연건진행료공차분석.분석표명,설계적자괄응광학계통구비교관송적공차조건,용역가공화장조.평개료해광학계통적성상성능,결과표명,설계적자괄응광학계통적MTF곡선접근연사겁한,광학전체함수적모재50 lp/mm시가체도0.4,이성상CCD적겁한분변솔위31 lp/mm,충분지이용료CCD상궤적분변자원.해자괄응광학계통여1 200 mm망원경대접필배후적조합초거위19.9 m,F수위16,PV치위0.031 4λ.
In order to verify the validity of the liquid crystal adaptive optics imaging technology for the correction of the aberration caused by atmospheric turbulence and to improve the energy utilization of the optical system,Zemax is used to design the liquid crystal adaptive optical system and to evaluate the characteristics of the system.Obtained Modulation Transfer Function(MTF) of the liquid crystal adaptive optical system is very closed to the diffraction limit and the modulus of the MTF is 0.4 at 50 lp/mm.For the specific requirements of detection and correction for a optical path in the open-loop adaptive optical system,the specific tolerance principle is established.According to the tolerance analysis, it is shown that the adaptive optical system has a more relaxed tolerance condition,and it is easier to achieve processing and alignment.The limited resolution of the CCD is 31 lp/mm,which means the resources of CCD has been utilized effectively.After matching a 1 200 mm telescope,the focal length of the whole optical system is 19.9 m, the F number is 16 and the peak-valve(PV) value is 0.031 4λ.