Relation between photometric characteristics of various VDTs and eye fatigue

各种VDT的光度特性与眼疲劳的关系

• 批准号: 62480172
• 负责人: NISHIYAMA Katsuo
• 金额: $ 3.2万
• 依托单位: Shiga University of Medical Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62480172/
• 关键词: VDT; Photometrics; Eye fatigue; Sharpness; Refresh rates; Oscillation degree; 振動度; 分光光度分布

The aim of the study was to develop the method to analyze the following characteristics of various type of VDRs' screen. 1)Sharpness and trembling of characters on a VDT screen. 2) Oscilation of the luminance forming letters on a VDT screen. 3) Time course of the spectrum of the luminance on a VDT screen. In order to evaluate the sharpness and trembling, measureing system was developed with modular area camera, controller, video monitor and personal computer with CRT display. By using this system the contour lines for equal luminance for a character of each frame were got and analyzed.In order to evaluate the cscillation and the time course of the spectrum, a measuring system was developed with optical fiber devices, monochrometer, photomultiplier, amplifier and personal computer with analoz signal processor.In the laboratory studies, the above indexes were measured for various VDT types from different makes.

本研究的目的是发展分析不同类型的VDR屏幕的以下特性的方法。1)VDT屏幕上字符的清晰度和抖动。2)在VDT屏幕上形成字母的亮度振荡。3)VDT屏幕上亮度频谱的时间过程。为了评估清晰度和抖动，测量系统开发了模块化面阵相机，控制器，视频监视器和个人计算机与CRT显示器。利用该系统对每一帧图像中的字符进行等亮度轮廓线的测量和分析，利用光纤器件、单色仪、光电倍增管、放大器和带模拟信号处理器的微机组成了一个测量系统，对不同型号的VDT进行了上述指标的测量。

项目成果

西山勝夫、中迫勝 他: "VDT労働と健康" 労働基準査会, 1-253 (1988)

Katsuo Nishiyama、Masaru Nakasako 等人：“VDT 劳动和健康”劳动标准委员会，1-253 (1988)

西山勝夫.中迫勝ら: "VDT労働と健康" 労働基準調査会, 1-253 (1988)

Katsuo Nishiyama、Masaru Nakasako 等：《VDT 劳动与健康》劳动标准研究组，1-253 (1988)

エティヌ・グランジャン(訳:西山勝夫、中迫勝): "コンピュータ化オフィスの人間工学" 啓学出版, 1-275 (1989)

Etinu Grandjean（译者：Katsuo Nishiyama、Masaru Nakasako）：《计算机化办公室的人体工程学》Keigaku Publishing，1-275（1989）

Nishiyama,Katsuo: "Evaluation of sharpness and gitter of a character on a VDT's screen" The Japanese Journal of Ergonomics. 24. 84-85 (1988)

Nishiyama，Katsuo：“VDT 屏幕上字符的清晰度和抖动的评估”《日本人体工学杂志》。

Nishiyama,Katsuo,Nakaseko,Masaru et al.: The review for new aspects of health and safety of VDT. Rodokijun chosakai, 1-253 (1988)

Nishiyama，Katsuo，Nakaseko，Masaru 等：VDT 健康与安全新方面的综述。