Performance of visual tasks of medium contrast or small size Performance of visual tasks of high contrast or large scale Working spaces where visual tasks are only occasionally performed Simple orientation for short temporary visits Depending on the factors noted above, adequate general lighting is usually between 5 lux when measured 76 cm (30 inches) above the floor.*Įxamples of industrial and office tasks and the recommended light levels are in the table below. The amount of light falling on a surface is measured in units called lux. Type of surfaces (does it reflect or absorb light).Type of task being done (such as demands for speed and accuracy).The amount of light we need varies and depends on: How much light is needed for various situations or activities? Back to top Poor lighting can be a health hazard – too much or too little light strains eyes and may cause eye discomfort (burning, etc.) and headaches. Poor lighting can affect the quality of work, specifically in situation where precision is required, and overall productivity. Poor lighting can be a safety hazard – misjudgment of the position, shape or speed of an object can lead to incidents and injury. What should you know about insufficient light? Back to top What are other OSH Answer documents about lighting? Back to top Information on how to conduct a more detailed (or formal) lighting survey is located under How do you conduct a more detailed lighting survey?. This document summarizes general ways to detect and solve some of the more common lighting problems. Insufficient light – not enough (too little) light for the need.Poor lighting can cause several problems such as: What are some of the most common lighting problems? Back to top You are here: Lighting Ergonomics - Survey and Solutions
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