光斑

It is very important to control the position error.A new method for measuring the boresight error between optical axes based on facular center located with vision image is presented.

提出了基于视觉图像定位光斑中心的轴偏角测量方法，并基于LABVIEW虚拟仪器平台构建了机器视觉测角系统。

The application of CMOS image sensors ADCS-2121 is used in full automatic portable sun photometer to introduce the application of CMOS image sensors in pointing of optical system, and compared with traditional method that choosing quarter sensor as facular detector.

结合CMOS图像传感器ADCS-2121在全自动便携式太阳辐射计中的应用介绍了CMOS图像传感器在光学系统定位中的具体应用，并与传统的采用四象限探测器作为光斑探测器进行了比较。

RESULTS: When the ratio of laser power to facular diameter was 2.7 kW/3 mm, the powder feeding speed was 90 r/min and the moving speed of numerical control machine was 5 mm/s, better H (826.61 μm) and W (3504.61 μm) were obtained.

结果： 在激光功率与光斑直径之比为2.7 kW/3 mm，送粉器转速为90 r/min和数控机床的运动速度为5 mm/s等参数下，TiZr粉末激光立体成形时具有较好的H和W，分别为826.61 μm和3504.61 μm。

RESULTS: When the ratio of laser power to facular diameter was 2.7 kW/3 mm, the powder feeding speed was 90 r/min and the moving speed of numerical control machine was 5 mm/s, H (826.61 μm) and W (3504.61 μm) were obtained.

结果： 在激光功率与光斑直径之比为2.7 kW/3 mm，送粉器转速为90 r/min和数控机床的运动速度为5 mm/s等参数下，TiZr粉末激光立体成形时具有较好的H和W，分别为826.61 μm和3504.61 μm。

6 The paper--there should not be cause business card printing and membership card to make up for bugs such as wet-exculsion, A B-I there is so much, so there should not be obvious business card printing and membership card making facular.

4.6 纸面不应有导致制卡和会员卡制作不上墨的湿排斥等缺陷，A等品、B-I等品不应有明显的制卡和会员卡制作光斑。

Field experiment result shows that the system is capable of restraining outside disturbance, realizing exact tracking facular weak object, and it has the characteristics of high-speed response, high-precision stability and powerful ability of anti-jamming.

现场实验表明，该系统能有效抑制外界干扰，实现对光斑弱小目标的准确跟踪，具有动态响应快，稳定精度高，抗干扰能力强的特点。

The application of the multimedia development technology-DirectShow from the development and system architecture aimed to analysis the virtues and weakness in the high precision image measurement mainly are focused, raised the idea and solution to the problem. The implementation of the system in facular image measure system proves the feasibility and advantage of the DirectShow technology.

就多媒体开发技术DirectShow在工程实践中的应用进行了探讨，从应用系统的构架等方面分析了其在高精度图像测量中的优点和不足，并对相应的问题提出了解决思路和方法，最后通过对一特定波长光斑图像测量系统的设计与开发，从实证的角度显示了所研究的理论与方法的可行性与先进性。

According to the dependence of photorefractive effects (such as facular size effect, beam climbing effect, and competition rules between noise grating and signal grating) on various physical factors, we get an effective method controlling the intensity of the noise.

利用光折变效应中的光斑尺寸效应、光爬行效应以及晶体中信号栅与噪音栅之间的竞争规律对各种物理因素的依赖关系，摸索出一套控制噪音强弱的有效方法。

It is found that the bright points distributed regularly adjacent to main facular is spectral distribution on the focal plane of the array of lens when the laser irradiates a hexagonal aperture,rather than what is induced by stray light.

结果表明，主光斑附近规则分布的亮点并不是由杂散光引起的，而是激光辐照六边形光阑，在透镜组焦平面所成的频谱分布。

Discuss the digital image process technology of the line CCD, put forward the gravity method of how to confirm the central position of the facular; Put forward the algorithm about data extrapolate under the network fault state.

其中重点介绍了基于线阵CCD的数字图像处理技术，提出了精确确定光斑中心位置的重心判读法；提出了在网络故障状态下进行数据外推的算法。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。