人眼頻閃特性研究

應(yīng)用物理學(xué)論文編號(hào):WLX044  字?jǐn)?shù):11286,頁數(shù):25

目 錄
摘    要 i
Abstract ii
第1章  緒論 1
1.1  研究的動(dòng)機(jī)與目的 1
1.2  研究意義 1
1.3  研究方法與系統(tǒng)描述 1
1.4  論文內(nèi)容概述 2
第2章 人眼結(jié)構(gòu)介紹 3
2.1  眼鏡的構(gòu)造 3
2.1.1 屈光系統(tǒng) 3
2.1.2 感光系統(tǒng) 3
2.2  明視覺和暗視覺 4
2.3  光源的頻閃效應(yīng)及其危害 5
第3章  LED光源及其驅(qū)動(dòng)簡(jiǎn)介 7
3.1  LED發(fā)光原理及其I-V特性 7
3.1.1  LED發(fā)光原理 7
3.1.2  LED的I-V特性 7
3.2  LED驅(qū)動(dòng)電路介紹 8
3.2.1  LED驅(qū)動(dòng)的技術(shù)方案 8
3.2.2  LED驅(qū)動(dòng)器的直流控制特性 8
3.2.3  LED與驅(qū)動(dòng)器的匹配 9
第4章   LED驅(qū)動(dòng)電路設(shè)計(jì)、制作及測(cè)試 11
4.1  LED背光源設(shè)計(jì) 11
4.2  LED驅(qū)動(dòng)電路設(shè)計(jì) 11
4.3  電路的制作與調(diào)試 12
4.3.1  電路的制作 12
4.3.2  電路的檢測(cè)與調(diào)試 12
第5章   樣本的采取、數(shù)據(jù)處理及分析 14
5.1  樣本采取 14
5.2  數(shù)據(jù)處理與分析 15
5.2.1  人眼臨界閃爍頻率的測(cè)定 15
5.2.2  臨界閃爍頻率在不同條件下的區(qū)別 15
第6章  結(jié)束語 19
致 謝 20
參考文獻(xiàn) 21

摘    要
 隨著電子化的高速發(fā)展，人們生活在交流熒光燈下和電視機(jī)熒光燈前，甚至伴以眼花繚亂的藝術(shù)燈光，光源閃爍對(duì)視覺系統(tǒng)的影響問題日益突出。因此測(cè)定人眼臨界閃爍頻率是非常有必要的。本課題首先了解了人眼的結(jié)構(gòu)，特別是兩種視覺細(xì)胞——錐狀細(xì)胞和桿狀細(xì)胞不同作用，以及查閱LED驅(qū)動(dòng)電路的設(shè)計(jì)要求。其次通過分析實(shí)驗(yàn)的要求，設(shè)計(jì)出了較好的LED驅(qū)動(dòng)電路，能用信號(hào)源頻率對(duì)LED閃爍頻率進(jìn)行控制，從而為我們測(cè)人眼臨界閃爍頻率打下了硬件基礎(chǔ)。最后通過對(duì)樣本進(jìn)行測(cè)試，對(duì)測(cè)得的數(shù)據(jù)進(jìn)行處理、統(tǒng)計(jì)得到人眼臨界閃爍頻率。并且討論不同條件下對(duì)人眼臨界閃爍頻率的影響，進(jìn)一步了解了在何種條件下人眼的敏感度較強(qiáng)。

關(guān)鍵詞：人眼結(jié)構(gòu)  LED驅(qū)動(dòng)  臨界頻率

Abstract
 With the rapid development of electronic, people live in the alternating Current’s Fluorescent and the television’s Fluorescent world during all the day, even accompanied by dazzling light art, so flashing light on the impact of the visual system have become increasingly prominent. Therefore determine the critical flicker frequency of human eye is necessary. The subject first learned about the structure of the human eye, In particular, two kinds of visual cells-- cone cells and rod-shaped cells in different roles, and consulted a number of books about LED drive circuit design requirements. Second, by analyzing the experimental requirements, we design a better LED driver circuit, which can via the signal source frequency to control the frequency of the LED flash. Thus It’s laid a hardware foundation of measured the critical flicker frequency of the human eye. Finally, with processed and counted the date tested sample, we can calculate the critical flicker frequency of the human eye.. We also discussed the conditions change whether has effect on the critical flicker frequency of the human eye, and learn more about our eye have the strong sensitivity under which condition.
Keywords: Structure of the human eye; LED driver; Critical frequency