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CIE published its “Guide on interior lighting” 2nd edition in 1986. Since then lighting practicechanged considerably, and it became necessary to prepare a new guide, this time as a CIEStandard.
Good lighting requires equal attention to the quantity and quality of the lighting. Whilethe provision of sufficient illuminance on the task is necessary, in many instances the visibilitydepends on the way in which the light is applied, the colour characteristics of the light sourceand surfaces together with the amount of glare the system gives. In this standard opportunitywas taken to specify for various work places and task types not just the illuminance but alsothe limiting discomfort glare and minimum colour rendering index of the source. Parameters tocreate comfortable visual conditions are proposed in the body of this standard. Therecommended values are considered to represent a reasonable balance, having regard to therequirements for safe, healthy and efficient work performance. The values can be achievedwith practical energy efficient solutions.
There are also visual ergonomic parameters such as perceptual ability and thecharacteristics and attributes of the task, which determine the quality of the operator’s visualskills, and hence performance levels. In some cases enhancement of these influencingfactors can improve performance without the need to raise illuminance. For example byimproving the contrast of the task attributes, enlarging the task by the use of up to date visualaids (glasses) and by the provision of special lighting systems with local directional lightingcapability.
The Standard provides guidance for illuminance, glare limitation and colour quality forgeneral building areas, agriculture buildings, the cement, concrete and brick industry, ceramicand glass industry, chemical, plastics and rubber industry, electrical industry, food industry,foundries and metal casting plants, hairdresser, jewelry manufacturing, laundries and drycleaning, leather industry, metal working and processing, paper industry, power stations,printers, iron and steel works, textile industry, vehicle construction, wood working andfurniture industry, offices, retailing, restaurants and hotels, places of entertainment, libraries,indoor public car parks, educational buildings, health care premises, airports, and churches.
Product Details
- Published:
- 12/01/2002
- File Size:
- 1 file , 550 KB
