光学的

Focal length is one of the most important optical characteristic parameter of optical lenses and optical instruments.

焦距是光学透镜和光学仪器的重要光学特性参数。

The invention relates to an objective lens for converging light emitted by a light source to irradiate an optical recording medium with the convergent light, an actuator having the same, an optical head for recording information on the optical recording medium and reproducing information recorded on the same, and an information recording/reproducing apparatus utilizing the same.

本发明涉及将从光源射出的光会聚并将聚焦光照射到光学记录介质上的物镜和配备有该物镜的致动器、以及将信息记录在光学记录介质上或对所记录的信息进行再生的光学头和使用该光学头的光学记录再生装置。

Compared with the conventional 2-D coordinate measuring systems, the new system has great improvement at measuring speed, aiming accuracy, measuring function and degree of automation The new system consists of two parts image measuring system of displacement and image autofocusing and aiming system The displacement measuring system in which CCD camera is used for locating the optical scale not only processes the advantages of absolute code measuring system powerful noiseproof feature, good long-time stability, easily compensated ruling error of optical scale, but also has the advantages of morden numerical systems easy numeralization and intelligence The autofocusing and aiming system in which CCD camera is applied for gaining the defocusing information and edge location information of workpiece enjoys the advantages of fast autofocusing, accurate result, high accuracy of edge detection and wide range of measured parameters, etc The feasibility of the new 2-D measuring system is analyzed in this thesis and related parameters are calculated.

详细本文在分析了现有二维中小尺寸测量系统中，光学仪器的光学读数系统和调焦、瞄准系统的优缺点之后，结合现代数字化仪器的优缺点，提出研制一种新的二维图像测量机系统。与传统二维坐标测量系统相比，新型系统在测量速度、瞄准精度、测量功能及自动化程度等方面都有较大的提高。该系统由图像式位移测量系统和图像式自动调焦、瞄准系统组成。图像式位移测量系统采用CCD摄象机拾取光学线纹尺的位置信息，既具有传统光学式绝对码位移测量系统的优点—抗干扰能力强、长期稳定性好、光学标尺误差易于补偿等优点，又具有现代化数字仪器易于微机化、智能化的优点。

The infrared coupling optical system is a middleinfrared system with a long focal length, larger field and telecentric beam path in image space, which is required to match with the parameters of two homing optical systems.

该红外光学系统是一个要求与2个导引光学系统的光学技术参数相匹配的长焦距、大视场和具有像方远心光路的中红外光学系统。

It is the first time to accomplish systematic thermal/structure/optical analysis of space optical remote sensor in our country. The adaptive optics correction close loop experiment system of reflective plane mirror is designed.

把NASTRAN有限元软件给出的镜面变形数据引入CODE V光学软件，在CODE V环境中建立了该R-C系统，并分析了主镜温度变形对系统像质的影响，完成了空间光学遥感器光学系统完整的热光学综合分析。

Dr. Zheng is active in research and development of advanced method and instrumentation for optical radiometry, calibration of satellite sensors, optical remote sensing and ocean optics.

郑小兵博士主要从事光学精确测量的先进方法与仪器、卫星光学传感器的高精度定标、光学遥感和海洋光学等方面的研究。

Test results show the linearity of COCT is better than IEC 0.2 class limit, and is suitable to the applications, in which the voltages are higher than 220 kV, the COCT accuracy is almost not affected by the existence of neighbor phases. The temperature test result tells in the temperature range of 50 ℃ the error of COCT is less than 1%, much better than an uncompensated one 16%. And thus the effectiveness of COCT is verified.

试验结果表明：比较式光学电流互感器的线性度可达到IEC 0.2级要求；在光学电流互感器适用的220 kV以上电压等级应用场合，比较式光学电流互感器具有较好的抗干扰性能；在50 ℃温度变化范围内，普通光学电流互感器的误差变化量高达16%，而比较式光学电流互感器的误差变化仅有1%，证实了基于比较法的补偿方案的有效性。

Database was developed using in-situ water components absorption data to analyze the correlationship between absorption coefficients of suspended substances and their concentrations in the water color bands of MODIS and MERIS reflectance,respectively.Based on the bio-optical theory models and the remote sensing retrieval semi-analysis algorithm of Carder-MODIS phytoplankton optical characteristics,the sensitive bands adapting to local water optical characteristics were selected to develop empirical models of inherent optical characteristics,apparent optical parameters and component concentrations.And the remote sensing retrieval of water inherent optical characteristics and concentrations in the Hangzhou Bay at the MODIS band was achieved by this model.

利用实测水体组分吸收数据建立分析数据集，分别分析MODIS与MERIS特征波段水体悬浮物吸收系数与悬浮物浓度和遥感反射率的相关性；在生物光学理论模型的基础上，参考Carder-MODIS浮游植物固有光学性质遥感反演半分析算法，选择适合本地(来源：ABC论7f文网www.abclunwen.com)水体光学特点的特征波段，建立固有光学参数、表观光学参数以及成分浓度之间的经验模型，基于MODIS特征波段实现杭州湾水体固有光学性质及其浓度的遥感反演。

Several unusual properties make this object particular interesting:(1) ultra-luminous near and far infrared (L〓≈10〓L〓, and L〓≈10〓 L〓) emission,(2) very strong optical Fe Ⅱ emission (R〓≈4.35),(3) apparently blueshifted optical Fe Ⅱ multiplets (several hundred km/s),(4) the strongest radio emission among radio-FIR selected NLS1's and extreme Fe Ⅱ emitters,(5) composite Balmer lines with both narrow and broad components (the latter blueshifted by about 1000 km s〓).

我们发现2MASS0153+260为首例超强光学FeⅡ线射电类星体，具有如下极为有趣特征：(1)远红外和近红外光度非常高，L〓≈10〓 L〓且L〓≈10〓 L〓；(2)光学FeⅡ线发射特别强，R4570≈4.35；(3)光学FeⅡ线相对于禁线和氢Balmer线窄成分有明显蓝移，Δυ～4×10〓kms〓；(4)在射电-远红外选NLS1和超强光学FeⅡ线AGN中射电辐射最强；(5)具有复杂的Balmer发射线轮廓，宽成分相对于窄成分和禁线有～1000km s〓的蓝移。

On the condition of remote observation and quasi- monochromatic observation,a compact image-plane interference mathematical model is deduced with OAS optical transfer function and the property of Fourier transform.

在观测目标相当遥远及准单色观测条件下，根据光学综合孔径光学传递函数以及傅里叶变换性质建立了一个简化的像面干涉光强分布数学模型，此数学模型的物理含义符合光学综合孔径成像观测的实际情况；根据光学综合孔径瞳面干涉条件，在光学综合孔径像面干涉数学模型的基础上得到瞳面干涉的数学模型。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了