IOE 333 Study Guide - Optical Power, Human Factors And Ergonomics, Awning

• School: U of M
• Department: Industrial And Operations Engineering
• Course: IOE 333
• Professor: All

Document Summary

High sensitivity to light: poor spatial resolution, no color discrimination no rods in fovea used for night. Illumination: the lighting quality of a given working environment, measured in units of lux or foot candles, inverse-square law: illuminance = (intensity/distance^2) E = i/d2: luminance, the amount of light that surfaces either reflect or absorb, measured in foot lamberts (fl, luminance = reflectance * illuminance (r*e, contrast, difference between the luminance of light and luminance of dark areas. Absorbs some of the light energy that passes through it to protect the surface: pupil. Back surface of the eyeball: visual angle, expresses image size o. D = distance object is viewed: cones/rods, location: Rods: retina o: acuity and motion sensitivity. Cones: shape (hard to see on sides) Rods: not really good for vision, high motion sensitivity: light sensitivity. Cones: need good light to see clearly. Rods: see kind of well in the dark: color sensitivity. Rods: see color in dark: dark adaptation.