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中国科学院 长春光学精密机械与物理研究所 中国科学院光学系统先进制造技术重点实验室,吉林 长春,130033
收稿日期:2010-10-08,
修回日期:2010-11-18,
网络出版日期:2011-07-25,
纸质出版日期:2011-07-25
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王红, 田铁印. 三线阵测绘相机光学系统的设计和公差分析[J]. 光学精密工程, 2011,19(7): 1444-1450
WANG Hong, TIAN Tie-yin. Design of three line array mapping camera and its tolerance analysis[J]. Editorial Office of Optics and Precision Engineering, 2011,19(7): 1444-1450
王红, 田铁印. 三线阵测绘相机光学系统的设计和公差分析[J]. 光学精密工程, 2011,19(7): 1444-1450 DOI: 10.3788/OPE.20111907.1444.
WANG Hong, TIAN Tie-yin. Design of three line array mapping camera and its tolerance analysis[J]. Editorial Office of Optics and Precision Engineering, 2011,19(7): 1444-1450 DOI: 10.3788/OPE.20111907.1444.
针对三线阵测绘相机光学系统设计的指标要求
综合考虑空间环境适应性、结构布局等因素
采用像方远心光路设计了一种兼具匹兹瓦型与对称型优点的新型光学系统结构。该系统在Nyquist频率77 lp/mm时
正视相机全视场的平均传递函数为0.613
前、后视相机全视场的平均传递函数为0.578;正视相机畸变为210
-5
前、后视相机畸变为2.410
-5
。运用公差的灵敏度分析和反转灵敏度分析
计算了系统内各公差参数对光学系统成像质量的影响
给出合理的公差要求及合适的补偿调整参数。按给定的公差要求
加工、装调了具有较高成像质量的光学系统。实验检测结果表明
各相机光学系统传递函数的测试值均在0.451以上
满足实验室静态传递函数
>
0.2
相对畸变
<
310
-4
的指标要求
制定的公差合理、可行
验证了公差分析与研究方法的正确性。
According to the configurations of optical system in a three line array mapping camera
a new optical system integrated with excellent features by Petzval and symmtry was designed based on a telecentric path to meet the requirement of stereoscopic mapping.The system shows a good imaging quality
and the MTF value of each lens is close to the diffraction limit at the Nyquist frequency of 77 lp/mm. Furthermore
the distortion of each optical system is less than 2.010
-5
for the straight-sight camera and 2.410
-5
for forward-sight and backward-sight cameras. Sensitivity analysis and inverse sensitivity analysis were used to compute the effect of each tolerance parameter on the optical system performance
and the proper tolerance requirements and compensators were determined.On the basis of tolerance given
the optical system with high image quality and low distortion was fabricated and assembled. The tested result shows that the MTF of each optical system can reach 0.451 at the Nyquist frequency of 77 lp/mm
which meets the requirements for static MTF more than 0.2 and relative disortion less than 310
4
and proves that tolerancing analysis methods are correct and feasible.
SINCLAIR R L, TRITCHEW S,JENNISON P. Tolerrancing methodology for an IR optical telescope[J].SPIE,1990,1309:233-243.[2] RICHARD N. Youngworth.21st century optical tolerancing: a look at the past and improvements for the future [J]. SPIE,2006,6342:1-15.[3] 苗健宇,张立平,吴清文. 测绘相机光学镜筒设计、加工及装配[J]. 光学 精密工程,2008,16(9):1648-1653. MIAO J Y,ZHANG L P,WU Q W. Design, manufacturing and assembly for optical lens of mapping camera [J]. Opt. Precision Eng., 2008,16(9):1648-1653. (in Chinese)[4] 田铁印,王红,谷凤安. 三线阵立体测绘相机光学系统设计[J]. 光学 精密工程,2009,17(11):2692-2697. TIAN T Y, WANG H, GU F A, Optical system design of three-line array stereoscopic mapping camera[J]. Opt. Precision Eng.,2009,17(11):2692-2697.(in Chinese)[5] 张晓辉,韩昌元,潘玉龙. 传输型CCD相机综合像质评价方法的研究[J]. 红外与激光工程,2008,37(4):697-701. ZHANG X H, HAN CH Y, PAN Y L, Evaluation of general image quality of transfer optical remote sensing CCD camera [J]. Infrared and Laser Engineering., 2008,37(4):697-701. (in Chinese)[6] 胡莘,曹喜滨. 三线阵立体测绘卫星的测绘精度分析[J]. 哈尔滨工业大学学报,2008,40(5):695-699. HU X, CAO X B. Analysis on precision of stereo mapping microsatellite using three-line array CCD images [J]. Journal of Harbin Institute of Technology., 2008,40(5):695-699. (in Chinese)[7] ROBERT E.FISCHER. Optical System Design [M]. McGraw-HILL,Inc,2000:315-352.[8] SMITH W J. Modern Optical Engineering: the Design of the Optical System [M]. Second Edition.McGraw-HILL, Inc, 1990.
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