光点

Based on the traits of the aspherical lens, the sunlight was focused on a very small spot, and then it was transferred into a plastic fiber by an aspherical lens and a selfoc lens. A formula for calculating the optimal length of selfoc lens is presented. The optimal assembly of the aspherical lens and selfoc lens was implemented by the aid of this formula. Therefore, sunlight is coupled into a plastic fiber efficiently.

根据非球面透镜垂轴球差小的特点把太阳光会聚到很小的光点，再利用长度约为1/4节距的自聚焦透镜改变光线的数值孔径使其满足光纤的数值孔径，通过一个计算公式来计算最佳的自聚焦透镜长度，实现非球面透镜和自聚焦透镜的最佳组合，把太阳光以较高的耦合效率耦合进塑料光纤。

This text has done a summary to PSD first , then introduce the structure , operation principle and characteristic of PSD, PSD position sensor experimental provision and measuring the circuit, study size , to enlarge size , mid point position of coefficient choose measurement range , sensitivity , non-linear influence of error in PSD circuit of luminous point emphatically.

本文先对PSD做了一个概述，然后介绍了PSD的结构、工作原理及特性，PSD位置传感器实验装置及检测电路，着重研究了光点的大小、电路的放大系数的大小、中点位置的选取对PSD的测量范围、灵敏度、非线性误差的影响。

Just when the two of them were exchanging sharp words, on the screen only a small point of light remained of the minor planet. As soon as Gululu noticed this he immediately said, Ah!

在两人针尖对麦芒中，屏幕上的小行星只剩下一粒不起眼的光点了，古噜噜一见，立刻说：「唉！

NASA's Cassini spacecraft has found within Saturn's G ring an embedded moonlet that appears as a faint, moving pinprick of light.

NASA 的卡西尼飞船在土星 G 环中发现了一个嵌入其中的小卫星，它看上去是一颗暗淡的、移动着的光点。

A automatic measuring system, bssed on the method of focuSed opt sPOt has been set up. This method of data acquisition and calculation is newish.

采用小光点注入法，在自动化装置上实现数据采集，用移动寻峰和直线拟合法处理数据。

A civil aviation official for the Siberian region where the plane was bound told Russia's NTV television Friday that an air traffic controller in Rostov saw a bright spot approaching the plane before it disappeared from the radar screen.

失事飞机原定飞往的西伯利亚地区的一名民用航空官员透露，罗斯托夫的一名空管工作人员在失事飞机从雷达屏幕上消失前曾看见一个明亮的光点正在接近飞机。

I know they play a very important part of the paranormal community...and I am here to prove that.

你们可以把它们放到你们的网站上去，向人们展示不同的摄光点。

I also study orbs and I have been very interested in their role in the paranormal for quite some time.

我也在研究摄光点，并且对他们超乎寻常的角色非常感兴趣。

The tiny pinprick of light just above the photographer's head in the picture is the distant planet Neptune .

图中摄影师头顶那个微小的针状光点就是遥远的海王星。

With such a display, each dot , or pixel, on the screen corresponds, or is "mapped," to a bit in the screen buffer.

用这个显示方法，萤幕上的每一点或光点相对或"图记"于荧幕缓冲器内的一数元。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失