III
目 录
中文摘要
ABSTRACT
第一章 绪论 .......................................................................................................................................... 1
§1.1 研究背景 ............................................................................................................................... 1
§1.2 发展现状 ............................................................................................................................... 1
§1.3 研究目标 ............................................................................................................................... 2
第二章 测量原理及方案 ......................................................................................................................3
§2.1 密度的概念及测量方法 .......................................................................................................3
§2.1.1 透射密度和反射密度 .................................................................................................3
§2.1.2 分色密度和彩色密度 .................................................................................................4
§2.1.3 实地密度和色调密度 ................................................................................................6
§2.1.4 叠印时的密度以及叠印率 ........................................................................................6
§2.2 色度的概念及测量方法 .......................................................................................................7
§2.2.1 色度学系统概述 .........................................................................................................7
§2.2.2 CIE1931 标准色度系统和 CIE1964 补充标准色度系统 ........................................ 7
§2.2.3 颜色三刺激值及色度坐标的计算 .............................................................................9
§2.2.4 色度测量的实现方法 ..............................................................................................10
§2.3 密度测量和色度测量之间的区别和联系 .........................................................................10
§2.4 本章小结 ............................................................................................................................. 11
第三章 测量系统的设计 ....................................................................................................................12
§3.1 光学设计 ..............................................................................................................................12
§3.1.1 光学部分的机械结构设计 ......................................................................................12
§3.1.2 光学部分的光谱条件及其相应设计 ..................................................................... 17
§3.1.3 光学设计中的其他细节 ..........................................................................................27
§3.2 电路设计 ............................................................................................................................. 28
§3.2.1 前端 I/V 转换电路 ................................................................................................... 29
§3.2.2 三色信号选通电路 ...................................................................................................30
§3.2.3 自动增益放大电路 ...................................................................................................31
§3.2.4 二阶滤波电路 ...........................................................................................................31
§3.2.5 仪器供电电路 ...........................................................................................................33
§3.2.6 基于 C8051F340 的数字电路 ..................................................................................34
§3.2.7 白光 LED 组驱动电路 .............................................................................................38
§3.2.8 仪器 PCB 图及实物照片 ........................................................................................ 38
§3.3 软件设计 ............................................................................................................................. 41
§3.3.1 软件的运行流程 .......................................................................................................42
§3.3.2 程序初始化模块 .......................................................................................................43
§3.3.3 三通道信号自动采集功能模块 ...............................................................................44
§3.3.4 各项参数测量功能模块 ...........................................................................................46
§3.4 本章小结 ............................................................................................................................. 50
第四章 仪器的误差分析及校准 ........................................................................................................51
§4.1 仪器的误差分析 ..................................................................................................................51