查询词典 lens

Undertake major customers to sample processing, in accordance with customer requirements to design, manufacture, main products have various types of 2mm-250mm spherical mirror, flat lens, digital color TV projection lens, high precision and all kinds of lenses, such as a prism.

主要承接客户的来样加工，根据客户要求进行设计、制造，主要产品有2mm-250mm的各类球面镜、平面透镜、数码彩电背投镜、高精密棱镜及各类镜片等。

The off-axis reflection system composed of four aspheric mirrors was designed, but the system structure was not so simple and the performance can also be improved, besides, manufacture and test for large aspheric mirrors are difficult; and then the spherical Fresnel mirror which is easier to be manufactured and tested was used to replace the aspheric mirror, the spherical Fresnel mirror has low cost of replication, but this design also can\'t be used in projection lens because it was only feasible in narrow wavebands; Furthermore, the design making use of catadioptric projection lens was accomplished, this design is greatly applied in rear projector because it has merits of both refraction and reflection. But it had difficulties in color aberration correction and had complex structure.

设计了四片非球面组成的离轴式反射系统，然而，仅采用非球面设计系统结构不够精简，性能也有待进一步提高，且非球面面形较大时加工和检测都存在一定的困难；继而提出了用球面Fresnel反射镜代替非球面的设计方法，虽然Fresnel反射镜加工和检测更为简单，且复制成本低，但对波长具有选择性；进而，应用折反系统结合的方式设计了离轴式投影镜头，该方法因兼具折射和反射的优点，在大屏幕超薄背投系统的设计中广为应用，缺点是会产生难以校正的色差，且结构复杂。

For metal lens, we analyze the characteristics of imaging in the same way with left-handed lens, we separate the metal imaging system into to part : symmetric and asymmetric structure.

此外在金属成像的部份，我们利用同样的方法来探讨金属透镜的成像特性，并将金属成像系统分为对称结构与非对称结构分别来讨论。

Telocentric lenses work with a wide depth of field. With a telocentric lens, you can image objects of different distances from the lens and the objects stay in focus.

具端着丝粒的镜头(注：我猜是类似于针孔镜头吧)具有宽阔之景深，以具端着丝粒的镜头，你能够将由镜头不同距离之目标物成像和保持目标物在焦。

Based on the curvature of substrate and Newton ring ,a simple set for measuring the stress in films is designed,which consists of a He-Ne laser,an extended lens,a convex lens and a travelling microscope with a spectroscope.

文章使用M athem atica描绘牛顿环与迈克耳孙干涉条纹，形象地讨论了两条纹产生机理、环纹中心、环纹级次、非单色光环纹及在测量波长时方法等的差异，使教学过程更具有直观性和生动性，加速教学手段现代化进程

A tungsten halogen lamp and a projecting lens are used to generate the collimated light. A CCD detector is used as light spot position sensor to measure the changes of the spot position at the rear focal plane of the imaging lens, and the optical angular deviation can be derived.

采用钨灯和投射透镜产生准直白光，用CCD探测器作为光斑位置传感器在成像透镜的后焦面测量光斑位置的变化，从而可得光学角偏差。

With a twin-lens design (one lens for viewing the scene and one for shooting it) and plastic body, this fully manual camera put pro-quality images within the reach of the Soviet public.

随着双镜头设计（一个用于查看现场，并拍摄1人镜头）和塑料机身，这种全手动的照相机装亲内到达苏联公众的图像质量。

Just behind the pupil is the lens and the light should pass unreflected through the lens to the back part of the eye called the retina.

只要后面的学生是镜头和轻应该通过unreflected通过镜头的背面的一部分，所谓的眼睛视网膜。

It is equipped with wide-angle lens and the tele-lens?

它装有广角镜头和长焦距镜头。

HSPs may play an important role in the maintenance of supramolecular organization of the lens proteins. The zonule rupture model was made to determine whether zonule dehiscence affected HSP-70 expression in lens.

HSPs在维持晶状体蛋白的三维结构中起重要作用，本研究的目的是观察悬韧带的离断是否对晶状体内HSP-70表达产生影响。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。