To focus in optical system and to determine the center of rotary table are common problems in many measurement systems.
对光学系统进行调焦和确定旋转工作台的中心对许多测量系统来说是一个共性问题。
The position of the image and the amplitude variation in the optical field are associated with the focus and the distance from the object to the front focal plane of the lens system.
象的空间位置和光场振幅的变化与透镜系统的焦距以及物体距焦平面的位置有关。
Through studying the historical background of the focus detection and principles of optical imaging, the auto focusing system adopts image gradient as the auto focusing evaluation function.
从焦点检测的历史背景出发，结合光学的成像原理，提出了以图像梯度为对焦评价函数的自动调焦技术。
The optical structure of focus and level system was introduced, and a mathematical model for single-point measurements of height and focusing and leveling was set up.
介绍了调焦调平系统的光学结构，并建立起了理想的单点高度测量与整场调焦调平的算法模型。
In this dissertation, we focus on researching the performance of both linear high-speed optical fiber communication and soliton transmission system using PSA as in-line amplifier.
本论文提出把PS A作为在线放大器应用于线性高速光纤通信系统和光孤子系统。
Next, focus on the analysis of point-to-point active Ethernet broadband fiber-optic broadband systems and point to more passive optical characteristics of the system and applications.
接下来，重点分析了宽带点到点有源以太网光纤系统和宽带点到多无源光纤系统的特点和应用。
The optical system is a projective optical system with long focus and large field of view, and is an important part of the equipment.
其中光学系统是该设备的重要组成部分。它是一个长焦距、大视场的投影光学系统。
Spot size detection method is representative method to obtain a focus error digital optical disk storage system.
光斑尺寸法是数字光盘信息存储中的典型聚焦误差探测方法。
Microscope is applied widely as an optical instrument. However, the auto-focus system applied to microscope is not widespread.
显微镜是一种应用非常广泛的光学仪器，然而，能实现自动对焦功能的显微镜并不多见。
The model of voice coil motor and optical pickup unit are analyzed, the model parameters are tested, the model of DVD focus servo system is built and the simulation is carried out.
分析了DVD聚焦伺服系统中音圈电机和光头拾取器的数学模型，通过实验测定其模型参数，完成了DVD聚焦伺服系统的建模，并进行了仿真。
The invention relates to a rear-focus optical system, an imaging apparatus and a method for focusing the same.
本发明涉及一种后组对焦光学系统、成像设备及其聚焦方法。
The invention relates to a rear-focus optical system, an imaging apparatus and a method for focusing the same.
本发明涉及一种后组对焦光学系统、成像设备及其聚焦方法。
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