Brightness Patterns and Visual Fields

Abstract

Brightness patterns in the field of view, and their effect on visual efficiency, are examined in the light of research and of present trends in practice.

Two separate, but related, fields are analysed—one centred on the work, the other covering the environment.

Brightness patterns in each field and the relationship between the two fields are discussed.

It would both clarify research and simplify application of its results if it were possible to divide the visual field into simple practical zones of standard sizes rather than the varying arbitrarily selected zones found in different research work. The problem is examined and it is shown that there are four zones which could with advantage be standardised and used in future work.

Some observations are made on the significance of these zones and of their treatment in practice.

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