The CSP index: A practical measure of office lighting quality as perceived by the office worker†

Abstract

Opinion surveys have shown that far too many workers are dissatisfied with the quality of their artificial lighting, despite the fact that, in many cases, their lighting meets the basic requirements of the CIBS Code for interior lighting. Lighting designers find it difficult to obtain a suitable balance between the various design elements. The Comfort, Satisfaction and Performance index (CSP) has been developed, based upon existing data, current Code recommendations and detailed studies of over 650 individual workers and their offices (44). The CSP index is designed to be used in conjunction with the Code and takes a value from 0 to 100 which relates to the probability that office workers will be satisfied with their visual environment.

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