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2Ae)_1.2视觉机制 Visual Mechanism, 亮度 = 照度 x 反射率, 照明不应该仅仅局限于那些正在执行视觉任务的空间区域。整…

- - - - 1.2.2.1.2.1在特定时间落在视网膜给定区域的光强度
      - 1.2.2.1.2.2视网膜在最近的过去（称为适应）受到的光强度
      - 1.2.2.1.2.3落在视网膜其他区域的光强度（称为对比度）
    - - 1.2.2.1.1.1亮度Brightness
      - 1.2.2.1.1.2亮度-照度的关系Brightness-Luminance Relation
      - 1.2.2.1.1.3亮度比Luminance Ratios
      - 1.2.2.1.1.4光的方向和分布Direction and Distribution of Light
      - 1.2.2.1.1.6视觉是对比敏感The sense of sight is contrast‐sensitive
      - 1.2.2.1.1.5颜色知觉Color Perception
    - - 1.2.2.1.3.1光的颜色COLOR OF LIGHT
      - 1.2.2.1.3.2浦肯野偏移 the Purkinje shiftt
      - 1.2.2.1.3.3光谱由五种颜色组成visible spectrum is comprised of five colors of light
      - 1.2.2.1.3.4色温Color Temperature( Correlated Color Temperature (CCT) )
      - 1.2.2.1.3.5显色指数 (CRI)Color Rendering Index (CRI):
  - - - 1.2.2.3.1感知亮度稳定perceive stable lightness
      - 1.2.2.3.2颜色恒常性color constancy
      - 1.2.2.3.3保持恒常性Maintaining Constancy
- - - - 1.2.3.1 随意观看，以浏览空间或与他人交流
      - 1.2.3.2 集中观察-看和思考，阅读，辨别细节
      - 1.2.3.3 看却看不见（做白日梦，内心反思)
      - 1.2.3.4 寻找一些东西：扫描视野，然后在其中找到一个物体（浏览）
    - - 1.2.3.2.1视觉任务Visual Task
        
        二维特性
        
        三维任务
      - 1.2.3.5.2.2可见性阈值Threshold Visibility
      - 1.2.3.5.2.3视觉灵敏度Visual Acuity
      - 1.2.3.5.2.4阈值对比度Threshold Contrast