焦度

基于双CCD和ARM的焦度计技术的研究

Study on the Technology of Focimeter Based on CCD and ARM

本文首先介绍了焦度计的概况、自动焦度计的工作原理、ARM单片机及图像传感器；

Firstly , the circumstances of focimeter , the working principle of automatic focimeter , the MCU ARM and the picture sensor are introduced in this paper .

介绍了基于CCD和ARM的焦度计系统的实现，同时着重讨论了了基于CCD的透镜的相关参数算法，最后介绍了基于该算法的系统的实现。

This paper introduces the realization of focimeter system based on CCD and ARM , and discusses the interrelated parameter arithmetic of lens based on CCD at the same time . At last , it introduces the achievement of the system based on this arithmetic .

对产品样机的试验结果表明，顶焦度的测量精度达到±0.03D。

The test results of the prototype show that the measuring accuracy of the vertometer can be up to 0.03D .

结论：焦度仪的入瞳2h与人眼瞳孔相匹配时，测量的接触镜后顶焦度就是接触镜实际后顶焦距&带高0.87h光线的像方截距L0.87h′的倒数。

Conclusion : When the incident pupil 2h of focimeter is corresponding with human pupil , the measuring value of the back vertex power is the real back vertex power of contact lens the reciprocal of distance on the orientation of image L0.87h ′ of band height 0.87h light .

阿贝数对镜片顶焦度检测结果的影响分析

The Analysis of Lens Focimeter Measured Results Affected by ABBE Number

无光焦度校正板在主镜后的牛顿光学系统的设计

A Newton Optical System with a Zero-power Corrector after Primary Mirror

验光机顶焦度测量不确定度评定

Assessment of Uncertainty in Measurement of Vertex Power of Refractometers

简述眼镜片顶焦度标准

Briefly introduction on the standard for vertex power of spectacle

眼镜镜片及角膜接触镜的顶焦度测量

Measurement of vertex power of spectacle lens and contact lens

具有两次透射的无光焦度校正透镜组的准施密特系统

A Pseudo Schimidt System with Through Twice Afocal Corrective Lens

角膜接触镜专用顶焦度标准器的研制

New Developed Set of Vertex Power Standard for Contact Lenses

介绍焦度计的原理、类型及测量精度。

The principle , type and measuring accuracy of lensometer are described .

无光焦度校正板在平象场卡塞格林系统中的应用

Application of the Afocal Corrector in the Cassegrain System with Flat Field

无光焦度3贴合薄透镜组初始结构参数求解方法探讨

A Method of Solving the Initial Structure of a Three-thin-lens Null Corrector

连续光焦度透镜的设计研究

Study on the Design of Lenses with Continuous Power

接触镜光学特性和后顶焦度测量分析

An analysis of contact lens optical properties and the back vertex power measurement

顶焦度标准镜片组的研制

A Newly Developed Set of Vertex Power Standard Lenses

旋转二次曲面光学系统的光焦度

The Optical Power of the Rotational Conicoid Optical System

介绍各种国产焦度计的原理，对国外自动焦度计作了较为详细的叙述。

The application and principle of various kinds of domestic-made lensometers are described .

自动焦度计图像及图像处理系统研究

Imaging and Image Processing System of Auto Lensmeter

目的描述一种投影式数字焦度计。

Aim A projective digital lensometer is presented .

大口径透射无光焦度系统的研制

Development of Large Aperture Transmitting Non-power System

方法设计的焦度计主要由照明系统、准直系统、投影光学系统组成。

Methods The designed lensometer primarily consists of light system , collimating system and projective system .

国际上关于角膜接触镜后顶焦度的测量主要分为两种，即：空气法和溶液法。

There are two methods mainly used for determination of back vertex power of contact lens .

比较接触镜专用标准透镜组与角膜接触镜的参数差异，从而分析采用接触镜专用标准透镜组标定的焦度计何以不能测定角膜接触镜的顶焦度。

The difference between the parameters of special lenses group and the contact lenses were compared .

GB17341-1998光学和光学仪器焦度计

Optics and optical instruments & Focimeters

焦度计的精度设计

The Accuracy Design of Focometer

我们常常举出这样一系列形状不同，然而具有相同光焦度的透镜，作为透镜的配曲调整的例子。

One often speaks of this succession of shapes having the same power as exemplifying lens bending .

新编辑手记一种数字投影式顶焦度测量仪

New digital projection vertometer