Exterior lighting design by computer algebra

A. T.P. So, Wai Lok Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review


Conventionally, exterior lighting design for, say a playground or apron etc, has relied on two popular methods, the lumen method and the more accurate point-by-point method. Both methods depend extensively on human experience to arrive at the final layout by repetitive trial-and-error. The design criterion is to achieve a desirable lux level as uniformly as possible. In this paper, a new design methodology has been developed based on the point-by-point method. By using new techniques in computer algebra, an optimal design that fully meets the design criterion can be achieved automatically by the optimisation of an error function. A review of computer algebra on different platforms and the development of a new three-dimensional vector approach to the point-by-point method, which are independent of geometric coordinates, are also discussed.
Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalLighting Research & Technology
Issue number2
Publication statusPublished - 1 Jan 1996

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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