The mathematical model for the coordinates of the probe tip center under the light pen coordinate system has been built.

When measuring, the probe of the light pen contacts the measured point, the CCD camera takes the image of LEDs on the light pen, and the 3D coordinates of the measured point are obtained by computing the coordinates of LEDs in the image plane.

测量时，使笔尖测头接触被测物体表面，摄像机摄取笔体上3个发光二极管的像，由3个发光二极管的像面坐标就可计算出被测点的三维坐标。

Research on the Technology and System of Portable Light Pen Coordinate Measurement System

便携式光笔三维坐标测量技术与系统研究

The Image Processing Method Based on Curve Fitting in Light Pen Vision Coordinates Measurement

光笔式视觉坐标测量中基于曲线拟合的图像处理方法

After a comprehensive review on the indoors and overseas current situation and developing tendency of portable 3D coordinate vision measurement system, a single camera 3D coordinate vision measurement system using a light pen has been designed and set up.

在对国内外便携式视觉坐标测量系统发展现状和趋势全面分析的基础上，设计组建了光笔式单摄像机三维坐标视觉测量系统。

Apple soft light pen& a program for input organic molecular structure

APPLE软光笔&有机结构式输入程序

Optimization Design of Light Pen for Use in Space Coordinate Measuring Systems Without Guideway

无导轨空间坐标测量系统的光笔优化设计

Graphics tablet: Calibrated tablet on which, using light pen, an operator brings together components of a design and fixes them electronically in their correct positions according to the required layout.

图形输入板：分度数的图板，操作员依照设计所需，在它上面用光笔把各设计单元作电子排放。

The vision detection technology is used in the light pen CMM. The surface of the object is replaced by the probe to be the target. By analyzing the change of probe on the camera, the spatial coordinates of the point to be measured can be determined.

光笔式三坐标测量机引入视觉坐标测量技术，使视觉检测的目标从被测物体表面转移到了目标测头上来，通过分析目标测头在像面上的变化情况确定被测点的空间坐标。

The design scheme for display operating, the application of memory technology, the design ideas for CRT drive circuit and light pen input system have been given.

给出了系统设计方案，其存储器技术的应用以及CRT驱动电路与光笔输入系统设计思想。

A TV Tracking Window Controled by Light Pen

光笔控制的电视跟踪窗

In computer graphics, an input device used to specify a particular display element or segment. Example: a light pen.

在计算机图形学中，为标识某个具体显示单元或显示段所用的一种输入设备，例如光笔。

The main work includes the following aspects: 1. The current light pen coordinate measuring technology and intelligent camera are introduced. 2.

具体工作如下：1、介绍了当前光笔式三坐标测量技术和智能相机技术的发展状况。

Design on Structure of Light Pen in No Guide 3D-coordinate Measuring System Utilizing Redundancy Technique

光笔式无导轨三坐标测量系统中的光笔冗余优化设计

Low baud light pen

低波特光笔-1200bps

Then the light Pen control of TV tracking window, including the principles of light pen structure, positioning, circuit structure and operation principle of tracking window position controled by light pen and some cautions in the use of light pen are described.

然后叙述数字式电视跟踪窗的光笔控制，其中包括光笔的结构和定位原理，光笔控制跟踪窗位置的电路结构及工作原理，使用光笔中要注意的问题。

Study on No Guide 3D Coordinate Measurement Technology Using Light Pen

无导轨三坐标测量技术的研究

The adjustable light pen is designed to realize the function that the on/ off status and brightness of LEDs on the light pen are adjustable. 3.

针对传统光笔式三坐标测量系统中光笔的缺陷，设计出了可调光笔，实现了光笔上发光二极管的开关状态和亮度值可调功能。

3/ 4 [ G] redundancy technique is applied in the design of the light pen system for the realization of self-calibration and self reparation when one light source is deficit for any reason.

采用工作冗余方式3/4[G]进行光笔系统冗余设计，使光笔系统具有一个冗余度以实现系统自标定和挡光自恢复。

The error of light pen system is less than 0.1 mm when the coordinate error of point source is(± 0.1 mm.)

点光源坐标误差为±0.1mm时，光笔系统误差≤0.1mm。

Recently, all the light pen CMM are pc-based systems, their image processing program and arithmetic program are all run in the computer.

目前，市场上的光笔三坐标测量机都是PC-Based系统，其图像处理程序和算法程序均在计算机中完成，相机只是负责采集图像和对图像进行简单的处理后上传给计算机。