This report describes the design and the calculation of an ion-retarding lens system which is used to increase the abundance sensitivity of MAT-260 mass spectrometer.
本文描述了一种用于提高ＭＡＴ—２６０型质谱计丰度灵敏度的离子减速透镜的设计和计算。
The Error Analysis in the Experiment of Newton Ring;
用牛顿环实验测量凸透镜曲率半径的误差分析
Having greater curvature on the concave side than on the convex side.Used of a lens.
凹凸的凹面曲率大于凸面曲率的。用于指透镜
The effect of RGP on corneal curvature
硬性透气性接触镜对角膜曲率的影响
The curvature of the film is concentric with the mirror behind the meniscus.
胶片的曲率是和弯月透镜后面的反射镜同心的。
Noncontact measurement of curvature radius of lens by Newton's Ring
非接触法利用牛顿圈测量透镜的曲率半径
The Measure of the Solid-state Laser s Thermal Lens for Wavefront Curvature Sensor with a Diffraction Grating;
基于光栅型波前曲率传感器的固体激光器热透镜效应测量
(2) A lens fault which causes the straught lines in the image to be a curve.It is due to the fact that different area of the lens produce different magnification.
（2）透镜缺点之一。它使直线影像变为弯曲的弧线。这是因为镜片各部分有不同的放大倍率所致。
All three of them use mirror, not lenses at the front.
这三台望远镜前部用的都是曲面镜而不是透镜。
drainage relative permeability curve
排泄相对渗透率曲线
Some telescopes do not use a lens at the front. They use a curved mirror at the back. A curved mirror is better than a lens in some ways.
一些望远镜的前部不用透镜，而在后面装上一个曲面镜，曲面镜在某些方面要比透镜好。
Freeform Lens Design for LED Illmination
实现LED照明的自由曲面透镜设计
The side of a lens is curved. The middle part of some lenses is thicker than the edge. In other lenses, the edge is thicker than the middle part.
透镜的面是曲线型的，有些透镜的中间比边缘厚，有一些透镜的边缘比中间厚。
Analysis and Measurement of Spot Focusing Lens Antenna Resolution
点聚焦透镜天线分辨率的分析与测量
Test bench design for light transmittance of conical surfaced windshield glass
圆锥曲面风挡玻璃透光率检测台设计
a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted.
穿过曲面透镜中心的光线不会反射和折射的线。
Having greater curvature on the convex side than on the concave side.Used of a lens.
凸凹的凸面比凹面曲度更大的。用来指透镜
THE LOCATION FIXING OF THE BASIC POINT AND BASIC SURFACE OF THE ROTATIONAL CONICOID LENS;
旋转二次曲面透镜基点和基面的位置确定
A research on the characteristic of the refraction-reflection system composed of rotational conicoid thin lens and flat mirrors
旋转二次曲面薄透镜与平面镜组成的折反光学系统的性质研究