【摘 要】
:
The integrated manufacturing technology is introduced to improve the imaging quality of an off-axis -three-mirror anastigmatic (TMA) system. With the integration of system design, manufacturing of highly -precise optical elements, simulation and evaluatio
【机 构】
:
KeyLaboratoryofOpticalSystemAdvancedManufacturingTechnology,ChangchunInstituteofOptics,FineMechanics
【出 处】
:
ChineseOpticsLetters
论文部分内容阅读
The integrated manufacturing technology is introduced to improve the imaging quality of an off-axis -three-mirror anastigmatic (TMA) system. With the integration of system design, manufacturing of highly -precise optical elements, simulation and evaluation capabilities of the manufactured system, and testing and -alignment with the same fiducial, we can efficiently and precisely achieve high quality of an optical system. In order to prove the efficiency of this technology, we design an off-axis TMA system with MTF invariance better than 0.50 (57 lp/mm), and manufacture the aspherical surfaces of this optical system with surface figure error better than l/50 (RMS, l = 632.8 nm). We develop an interface software named MetroMax to achieve the connection between the final surface figure and the optical design software. The MetorMax also forecasts the imaging quality of the system, and guide us in aligning the system with a same fiducial with the whole field of view approached l/14 and MTF invariance better than 0.95. To confirm the imaging system after integrated manufacturing, we test the system on the ground and orbit; the result proves effective improvement in the imaging quality of the optical system.
其他文献
针对现有自准直模型包含系统信息量有限的不足, 提出了一种基于厚透镜对光线变换的建模方法。以应用光学中厚透镜对光线变换的理论为基础, 结合矢量运算和坐标系旋转方法建立了光电自准直系统数学模型。通过数值仿真, 对模型中包含的平面镜的转角、透镜的厚度、焦距及表面曲率半径、光源和探测器位置等系统主要参数对光电自准直系统的成像影响进行了分析, 并通过对像点几何中心的提取, 分析了透镜成像畸变对光电自准直系统测量精度的影响。文章建立的模型, 为系统参数的提取和优化、分析像点轨迹变化的影响因素以及自准直测量误差的分析和
Variable selection is applied widely for visible-near infrared (Vis-NIR) spectroscopy analysis of internal quality in fruits. Different spectral variable selection methods were compared for online quantitative analysis of soluble solids content (SSC) in n
在基于结构光照明的三维面形测量中,针对有孤立区域物体的条纹图像存在不规则缺陷的问题,提出先对其进行Gerchberg迭代,消除或减少条纹缺陷,获取较完善的迭代条纹,然后再利用傅里叶变换轮廓术(FTP)重建面形。设计了迭代流程,并分析了影响迭代精度的因素,解决了光学加工用具磨盘表面不完善条纹Gerchberg迭代过程中存在的问题,成功地重建了磨盘的三维面形。该工作为表面存在孤立区域的被测物体三维面形
从玻璃组分与玻璃光学折射率分布及零色散波长位置的影响机理出发, 研究低色散卤化物对硫系玻璃的色散调控作用.制备了Ge-Ga-Se-CsI硫卤玻璃, 利用差示扫描量热仪、红外椭偏仪、红外光谱仪等测试了该玻璃的物化性质, 分析了原料和玻璃提纯工艺、CsI含量对玻璃形成以及透过范围的影响, 并计算了该玻璃的材料色散.实验结果表明: 该玻璃的透过范围可覆盖可见光至中远红外波段(0.55~18 μm); 该玻璃的材料零色散点随着CsI含量的增加明显蓝移, 摩尔百分比为20%和40%的CsI含量可使该玻璃材料的零色散
在红宝石环状激光器中当输出光束之一直接反射回激光器时,观察到巨脉沖。在光束反射回时,产生激光作用的阈值没有改变,但其输出增加到一焦耳,其中大多数能量集中在少数几个功率水平为兆瓦、持续期为50~100毫微秒的脉沖中。
We present the investigation on deformation of orbital angular momentum (OAM) modes in bending ring-core fibers (RCFs) with different structure sizes through numerical and experimental studies. The effective refractive index differences of even and odd fi
介绍了一种可用于实时监测直径0.2~1.0 mm激光核聚变靶球涂敷状态的光学系统的设计,系统采用环形LED照明系统以适合特殊的照明要求,用Petzval型物镜使500 mm处的微球清晰成像于CCD像面上,CCD输出的图像电信号经图像采集卡转换成数字信号,最后该数字信号由计算机进行处理,实现了系统对靶球膜层涂敷作业的自动监控,大大提高了涂敷效率.所设计的系统轴上点最大弥散斑直径为12.6 μm,轴外最大弥散斑直径为15.8 μm,整个视场的像质比较均匀,分辨率较高,对于波长522 nm的光线,场曲和畸变分别
Ho:YAG 晶体因其优良的机械性能及光谱特性,成为高重频2 μm 激光器的可选晶体之一。为获得高效率、高功率、高重频2 μm Ho:YAG 激光器,分析了单掺Ho3 激光器的发光机理,从速率方程出发建立了高重频Ho:YAG 激光器转换效率的计算模型,利用该模型分析了输出镜透射率、激光模式大小、抽运-激光模式比和离子掺杂浓度等参数对高重频Ho:YAG 激光器转换效率的影响,并提出了参数设计范围,通过实验对理论模拟结果进行了验证。