查询词典 optical lens

First, our country optical fiber industry development survey 1st, optical fiber industry development review (1) starts Our country optical fiber industry start to the last century70's intermediate stages, then places such as Ministry of Posts and Telecommunication, machinery, electron department system and Beijing,Shanghai many units, all invested the strength, was engaged in the optical fiber and the optical fiber prefabricates the stick the development work.

我国光纤产业起步于上个世纪70年代中期，当时的邮电部、机械、电子部系统和北京市、上海市等地的诸多单位，都投入力量，从事光纤和光纤预制棒的研制工作。

The invention adopts a semiconductor laser or other pumping lights, such as a LED light, to pump the etalons, optical elements and wave plates made of optical materials which can absorb the pumping light, and regulates the output power of the pumping light to change the temperature of transmittance zones of the etalons, wave plates and optical elements so as to realize the changing of transmission wavelength of the etalons, the quick changing of wave plate phase and the quick changing of optical length of optical elements.

本发明采用半导体激光或其他泵浦光如LED光泵浦由可吸收泵浦光的光学材料制作的标准具、光学元件、波片，由调节泵浦光输出功率改变标准具波片、光学元件透光区域的温度，从而实现标准具透过波长的改变、波片相位快速变化，光学元件光学长度快速变化。

Based on the single star optical fiber network and with the quotation of new notion of equivalent optical fiber, the idea and method of designing optical divide ratio in multiple star optical network optical distributor are introduced in this paper.

基于一级单元式星型光纤网中光分路器分光比的设计，引用等效光纤及其长度的新概念，通过实例介绍了多重星型光纤网络中光分路器分光比的设计思路和方法。

Aiming to solve the shortcoming in the prior art that any on-line DCF dispersion compensation technology is not provided for long distance, and the nonlinear effect in the dispersion compensation technology is restrained, the invention provides the dispersion compensation method, which includes the steps that after a sending end implements electric pre-compensation treatment on a digital signal to be transmitted, a control electric/optical converter module outputs a distorted optical signal; after receiving the optical signal, a receiving end conducts a post compensation treatment after converting the optical signal into an electric signal, or converts the optical signal into the electric signal after implementing the post compensation treatment.

为了解决现有技术中长距离无在线DCF色散补偿技术的不足和抑制色散补偿技术中的非线性效应，本发明提供了一种色散补偿方法，包括发送端将待发射的数字信号进行电预补偿处理后，控制电/光转换模块输出畸变光信号，接收端收到光信号后，将光信号转换为电信号后进行后补偿处理，或将光信号进行后补偿处理后转换为电信号的步骤。

A method for carrying out terminal management based on EPON includes connecting unit management system on optical line terminal based on EPON and setting up network management channel between them and between optical line terminal and each network terminal, carrying out analysis on message by optical line terminal when network management protocol message is sent to optical line terminal by unit management system, retransmitting message to network terminal by set up operation-maintenance channel when network protocol message is aimed at network terminal and retransmitting message reported from network terminal to unit management system by optical line terminal.

一种对基于EPON进行终端管理的方法，在基于EPON的光线路终端上连接设备管理系统，在它们之间建立网络管理通道，并在光线路终端和各网络终端之间建立承载在操作管理维护协议层上的网络管理通道；设备管理系统向光线路终端发送网络管理协议报文时，光线路终端对该报文进行解析，如果是针对网络终端的网络管理协议报文，则将该报文通过所建立的操作维护通道转发给该网络终端；网络终端向设备管理系统上报的消息，由光线路终端转发给设备管理系统。

A R-C system with foci of 2 m and f-number F/4 was taken for an example, the principles of stray light eliminating and evalutiong in reflective optical system was put forward. Lens hood in the main mirror, lens hood outside and window shade, lens hood in the secondly mirror were designed by CAD modeling.

以焦距为2 m，相对孔径为1/4的R-C系统为例，介绍了利用计算机仿真技术进行消杂散光设计和评价的原理，结合CAD建模进行了主镜内遮光罩、外遮光筒、次镜百叶窗式遮光罩的设计。

The solid immersion lens for near field optical storage has one negative refraction medium layer coated to the lower surface of traditional solid immersion lens to re-focus laser beam focused onto the lower surface of the solid immersion lens onto the surface of CD.

本发明公开了一种用于近场光存储的固体浸没透镜，在传统固体浸没透镜的下表面涂覆上一负折射介质层，该负折射介质层将聚焦于固体浸没透镜下表面的激光重新聚焦于碟片的表面。

Factory design and production of various high-precision zoom lens, projector lens and as high as /20 flatness of the plane mirror is widely used in a variety of measuring instruments; factory production testing of optical imaging lens, the resolution of 2300000 pixels, relative distortion of 0.05%, which is high-precision imaging and quality measurement of choice for detection.

本厂设计生产的各种高精度变焦镜头、投影仪物镜及平面度高达λ/20的平面镜，广泛应用于各种测量仪器；本厂生产的光学影像检测镜头，其分辨率达到230万像素，相对畸变为0.05％，是高精度影像测量及品质检测的首选。

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。

The key for the optical design is confirming the F number of lens,and making the system aberration least by transforming the curvature of lens and the degree of lens tilt in the case of no ghost image damager.

设计的关键在于确定例行的透镜F数。并通过控制透镜的曲率半径和倾斜角度，在保证无鬼点破坏的情况下使得系统像差较小。

" I' d like to get some rough idea about music in the baroque ear, please."

请简要介绍一下巴罗克时期的音乐，好吗？

The results showed that the peak latency and pattern of SEPs elicited by electrical needling in LI-l1 and MP were similar. The amplitude of SEPs elicited by electrical needling in LI-l1 was higher than that of MP. There was no obvious SEPs generation when MM was electrical needling.

结果显示，电针刺激曲池穴和其邻近桡侧伸腕长肌运动点诱发性脑电波的波形和波峰时间是类似的，只是穴位的诱发性脑电波波幅较大，而电针刺激非穴位点并没有明显的诱发性脑电位。