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ISO 8995 CIE S 008 Lighting of Indoor Work Places


Good lighting will create a visual environment that enables people to see, to move about safely and to perform visual tasks efficiently, accurately and safely without causing undue visual fatigue and discomfort. The illumination may be daylight, electric light or combination of both.

Good lighting requires equal attention to the quantity and quality of the lighting. While the provision of sufficient illuminance on the task is necessary, in many instances the visibility depends on the way in which the light is delivered, the colour characteristics of the light source and surfaces together with the level of glare from the system. In this standard opportunity was taken to specify for various work places and task types not just the illuminance but also the limiting discomfort glare and minimum colour rendering index of the
source. Parameters to create comfortable visual conditions are proposed in the body of this standard. The recommended values are considered to represent a reasonable balance, having regard to the requirements for safe, healthy and efficient work performance. The values can be achieved with practical energy efficient solutions.

There are also visual ergonomic parameters such as perceptual ability and the characteristics and attributes of the task, which determine the quality of the operator’s visual skills, and hence performance levels. In some cases enhancement of these influencing factors can improve performance without the need to raise illuminance. For example by improving the contrast of the task attributes, enlarging the task by the use of up to date visual aids (glasses) and by the provision of special lighting systems with local directional lighting capability.


This standard specifies lighting requirements for indoor work places and for people to perform the visual tasks efficiently, in comfort and safety throughout the whole work period.

This standard does not explain how lighting systems or techniques should be designed to optimise solutions for specific work places. These may be found in the relevant CIE guides and reports.

Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Standard are encouraged to investigate the possibility of applying most recent editions of the standards indicated below. Members of CIE, the International Electrotechnical Commission (IEC) and the International Organization for Standardization (ISO) maintain registers of currently valid international standards.

ISO 3864
Safety colours and safety signs

ISO 6309
Fire protection-safety signs

ISO 6385 Ergonomic principles in the design of work systems

ISO 9241 Parts 6/7/8
Ergonomic requirements for office work with visual display terminals

Method of measuring and specifying colour rendering of light sources

CIE16-1970 Daylight

CIE 17.4-1987
International lighting vocabulary 4th ed. – equivalent to IEC 50(845)

An analytic model for describing the influence of lighting parameters upon visual performance

Calculations for interior lighting – basic method

Lighting for sports halls
Vision and the visual display unit work station

CIE 62-1984
Lighting for swimming pools

CIE 96-1992
Electric light sources. State of the art-1991

CIE 97-1992
Maintenance of indoor electric lighting systems

CIE 103/5-1993
The economics of interior lighting maintenance

CIE 117-1995
Discomfort glare in interior lighting

CIE 129-1998
Guide for lighting of exterior work areas

LISUN following instruments fully meet ISO 8995 CIE S 008 Lighting of Indoor Work Places:


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