The optical focus sensor includes a splitter configured to split the radiation beam into a first sub-beam and a second sub-beam.
光学聚焦传感器包括分束器，该分束器配置为将辐射光束分为第一子光束和第二子光束。
To detect whether a substrate is in a focal plane of an inspection apparatus, an optical focus sensor is arranged to receive a radiation beam via an objective lens.
为了探测衬底是否处在检查设备的焦平面上，一种光学聚焦传感器被布置为通过物镜接收辐射光束。
Spherical Aberration — causes light rays passing through a lens (or reflected from a mirror) at different distances from the optical center to come to focus at different points on the axis.
球差-使以不同孔径角穿过透镜(或从镜面上发射)的光线不能聚焦在轴上的同一点。
New Mexico-based Emcore Corp., for one, USES optical lenses to focus the energy of 500 SUNS onto a tiny, super-efficient photovoltaic cell.
总部位于新墨西哥州的埃姆克公司(EmcoreCorp)就是其中之一。该公司利用光学透镜把500倍太阳的光照聚焦到一个极小的超高效光伏电池上。
Right. Put another way, the entire contact lens is the optical center. So no matter which way you move your eyes, objects appear in perfect focus.
对，换句话说，整个镜头就是视觉中心。所以不管你眼睛怎么动，焦点就会完全对准物体。
Spherical Aberration -- causes light rays passing through a lens (or reflected from a mirror) at different distances from the optical center to come to focus at different points on the axis.
球差-使以不同孔径角穿过透镜（或从镜面上发射）的光线不能聚焦在轴上的同一点。
Through studying the historical background of the focus detection and principles of optical imaging, the auto focusing system adopts image gradient as the auto focusing evaluation function.
从焦点检测的历史背景出发，结合光学的成像原理，提出了以图像梯度为对焦评价函数的自动调焦技术。
There are bad optical aberration in the camera lens of short focus.
短焦距摄像机镜头一般都存在比较严重的光学畸变。
But the survival problem of optical network is still the focus of city rail transit, especially studying and using the ring optical network.
但是光网络的生存性问题仍旧是城市轨道交通关注的焦点，特别是对环形光网络研究和应用。
It is considered as the trend of optical transmission network and gets more and more focus under the dual drive of transmission bandwidth and service application demand.
在传输带宽和业务应用需求的双重驱动下，智能光网络作为光传送网的发展趋势得到越来越多的关注。
The optical design and optical efficiency of line focus cylindrical Fresnel lens for solar concentrator are discussed.
研究了柱面线聚焦菲涅耳太阳聚光透镜的光学设计和光学效率。
To focus in optical system and to determine the center of rotary table are common problems in many measurement systems.
对光学系统进行调焦和确定旋转工作台的中心对许多测量系统来说是一个共性问题。
In this dissertation, we focus on researching the performance of both linear high-speed optical fiber communication and soliton transmission system using PSA as in-line amplifier.
本论文提出把PS A作为在线放大器应用于线性高速光纤通信系统和光孤子系统。
The optical structure of focus and level system was introduced, and a mathematical model for single-point measurements of height and focusing and leveling was set up.
介绍了调焦调平系统的光学结构，并建立起了理想的单点高度测量与整场调焦调平的算法模型。
The position of the image and the amplitude variation in the optical field are associated with the focus and the distance from the object to the front focal plane of the lens system.
象的空间位置和光场振幅的变化与透镜系统的焦距以及物体距焦平面的位置有关。
We focus on the peak power, pulse width, extinction ratio of conversion optical pulse and the transmission property of conversion optical pulse in standard single mode fiber.
详细研究了反转光脉冲的峰值功率、脉冲宽度和消光比等重要物理参量以及反转光脉冲继续在常规单模光纤中传输时的演变特性。
It can be used to optimize the all optical switch design for different materials (self focus and defocus), nonlinear indices and wavelengths.
此设计方法可以对不同的材料(自聚焦、自散焦)、不同的非线性折射率和波长等进行波导全光开关优化设计。
The several dynamic focus systems are analyzed. The transmission formulas of laser through them and the way to define the optical lever ratio and the focus of lens are given.
分析了几种不同的动态聚焦系统的特点，给出了激光束通过该系统的变换公式以及光杠杆比和透镜焦距的确定方法。
Ethernet passive optical network (EPON) which is a potential optical access technology based on Ethernet has become the current focus of research for broadband access technology.
无源光以太网(EPON)是一种基于以太网的光接入技术，具有很大的发展潜力，是目前宽带接入技术研究的热点。
Optical transmission network with huge capacity and good flexibility, based on wavelength division multiplexing (WDM), becomes the focus in current optical communication field.
其中以波分复用（WDM）技术为基础的光传送网络由于其大容量和良好的灵活性而成为目前光通信领域研究的焦点。
One is an adaptation of a well-known effect called "optical tweezers" in which objects can be trapped in the focus of one or two laser beams.
第一种方案是调整被称为“光镊”的著名效应，在其中对象物体可被困在一条或两条激光束的焦点上。
When zoom lens are used for military sighting, the drift of optical center caused by the change of focus length will reduce the sighting accuracy severely.
长焦变焦镜头用于军事瞄准时，变焦过程中较大的光中心漂移，降低瞄准精度。
Placing a diffractive optical element(DOE) on the incident laser beam to improve the depth of focus, the DOE'S aperture is variable.
在入射光束的孔径受限制的情况下，利用衍射光学元件来增加激光束的焦深。
When light inputs the surface of optical elements, there is reflection as well as refraction, so ghost light come into being, its focus is called ghost image.
光学元件表面在折射时都存在反射，从而存在设计意图之外的杂散光，其会聚点即所谓鬼点。
There are bad optical aberration in the camera lens of short focus.
短焦距摄像机镜头一般都存在比较严重的光学畸变，使成像质量下降。
The detected pyroelectric infrared signal passes through an optical filter and is focused by the swinging convex lens and the infrared focus is also swinging slightly.
被检测的热释电红外信号经过滤光镜片和摆动的凸透镜聚焦后，其红外光焦点同样也进行微幅摆动。
In all optical networks, as the kernel part of instruments used to accomplish all optical interchange, optical switch is being a focus of research in all optical communication.
光开关是光网络中完成全光交换的核心器件，它的研究日益成为全光通信领域关注的焦点。
Spot size detection method is representative method to obtain a focus error digital optical disk storage system.
光斑尺寸法是数字光盘信息存储中的典型聚焦误差探测方法。
On the present, the main studies focus on the stability improvement of photochromic dyes, preparation of sol-gel optical fibre and decrease of hydroxyl group content.
提高光致变色染料的稳定性、制备溶胶-凝胶光纤及降低杂化材料羟基含量是目前的研究重点。
Next, focus on the analysis of point-to-point active Ethernet broadband fiber-optic broadband systems and point to more passive optical characteristics of the system and applications.
接下来，重点分析了宽带点到点有源以太网光纤系统和宽带点到多无源光纤系统的特点和应用。
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