查询词典 concave lens

Software, and simulated by Monte Carlo method. The simulation results are conducted by descriptive statistics. Two "drop-in" assembly design lens groups were studied to calculate the stack-up element tilt and decenter within a cell and the resultant deviations of the optical axes away from the mechanical datum axis. The results indicate that the opto-mechanical tolerance model can analyze the critical to quality parameters of a lens system. As a result, the performance of the lens system can be anticipated by the opto-mechanical tolerance model before mass production.

戊n体编辑，并以蒙地卡罗方法模拟，模拟结果以叙述统计呈现；最后以两个&投入式&组立设计的镜群组为案例，计算镜片在镜筒内的累积偏心角度公差、偏心距离公差及镜片光学轴的累计偏移量，其结果显示该模型可模拟一个镜头系统的关键品质参数；所以，镜头系统的性能在大量生产之前可藉本光机公差模拟模型预测其品质与良率。

Result The epithelium was thinner 54.3±8.44μm in the contact lens group than for the control group, and the density of basal epithelium was cells was lower too(3705.00±447.62/mm^2), and an increased number of microdot opacities in the contact lens group compared to the control group as apparent (P.05), more Langhans cells in the contact lens group is dendriform.

结果 1。佩戴角膜软性接触镜组与对照组相比，基底上皮细胞密度减少，为3705.00±447.62个／平方公厘(P.05)，角膜上皮层厚度变薄，为54.3±8.44μm(P.05)，并有部分剥脱。2。

It is difficult to be simulated and analyzed due to the excessive surfaces, complex structure and locomotory parts in zoom lens. All the transmission planes taken as the partial reflection and partial transmission planes were simulated with ASAP（advanced system analysis program）and the stray rays on "dangerous surfaces" which easily generate the ghost images in zoom lens were analyzed. Based on it, the zoom lens was optimized and the quality of image was improved by changing the curvature and refractive index of the second reflection planes.

利用ASAP软件模拟每个透射面作为部分透射、部分反射的表面，对变焦光学系统非轴上光进行分析，模拟出变焦系统的光学元件表面和光机内壁，实行实际光线追迹，然后以像面为研究对象，进一步实施实际光线追迹，模拟出全部散射光在像面上的能量分布，找出鬼像形成的原因，并在此基础上通过改变二次反射所在面的曲率或改变所在面的折射率两种方法对变焦光学系统进行优化，减小鬼点数目，以提高系统的成像质量。

One aspect of the invention is directed toward a lens system that includes a lens, a fitting mountable to a camera, and a flexible body extending between the lens and the fitting.

本发明的一个方面专注于一种透镜系统，其包括透镜、可安装至照相机的装配件和伸展在所述透镜和所述装配件之间的柔性体。

Though the opacified lens is replaced by a crystal clear optics during the cataract surgery, the disturbance of the compensatory effect of nature lens to positive corneal spherical aberration has been made by the conventional spherical intraocular lens.

然而白内障手术去除了混浊的水晶体，但是所植入的传统球面水晶体虽然提供了透明无瑕的光学区，却忽略了角膜所产生的高阶像差，尤其是球面像差。

Water was syringed between lens nucleus layers to free the lens from its layers and extract it from the little incision,and fulfiled lens crush and liberation.

用钝头针插入晶状体核层间注水，使硬核周围的核壳层层分离，游离出硬核并将之溢出切口，完成碎核、娩核。

And Technology, Changchun 130022, ChinaAbstract : The optical design of wide spectrum WFOV LLL collimating lens and the structure of lens set are introduced. The correction of the secondary spectrum of the WFOV LLL collimating lens are described emphatically.

介绍宽光谱大视场微光准直镜的光学设计和镜组结构方案，侧重叙述大视场微光准直镜的二级光谱校正方法。

The invention provides an ultra-short length erbium-ytterbium co-doped high gain glass fiber superfluorescence light source which includes: a semiconductor laser 1, a coupling lens system 2 (including a collimating lens 3 and a focusing lens 4), a signal light total reflective mirror 5, a high gain fiber 6 a pumped light input terminal is a vertical cutting terminal 8 in figure (a structure and is a bevel terminal 7 in figure structure, a superfluorescence output terminal is the bevel terminal 7 in figure and.

一种超短长度铒镱共掺高增益玻璃光纤超荧光光源，包括：半导体激光器1，耦合透镜系统2(包括准直透镜3和聚焦透镜4)，信号光全反镜5，高增益光纤6泵浦光输入端在图(a结构中为垂直切割端8，在图结构中为斜角端7，超荧光输出端在图、中均为斜角端7四部分。

Widely used in optical glass lens, lens resin, synthetic products such as plastic lens surface coating, in the civil decorative coating color especially grain drill, stones coating, dual-use car mirrors films, hand colored surface, all kinds of color Or through the surface reflection equipment, etc.

广泛用于光学玻璃镜片、树脂镜片、合成塑料镜片等产品表面镀膜，在民用彩色装饰镀膜(特别是晶钻、水钻镀膜、两用型汽车后视镜片、彩色手表面、各种彩色或透反射仪器表面等)生产上具有丰富的经验。

The lens design incorporates an inner focusing system that prevents the front of the lens from rotating, making it particularly suitable for using circular polarizing filters and petal-shaped lens hoods.

该镜头的设计采用了内对焦系统，防止旋转镜头的前面，使特别是使用圆形偏振滤镜和花瓣形镜头遮光罩合适。

Collins, do you wish to cross-examine the witness?

柯林斯先生，要问证人吗？

He is sitting cross- legged .

他两腿交叉坐着。