Lighting Quality

From Fiswiki

Lighting quality features

Lighting Quality is the sum total of all lighting quality features. For good lighting, a lighting installation needs to take account of every relevant quality feature and not be designed on the basis of just a single criterion such as illuminance.

Reading a book, assembling intricate components, working at a computer – the visual tasks our eyes need to perform in our private and working lives are defined by a range of different activities. These different tasks present different lighting quality requirements.

Each one relates to a specific quality feature:

lighting level determines brightness
glare limitation makes for vision free of interference by direct or reflected glare
harmonious brightness distribution ensures an even balance of luminance
light colour defines the colour appearance of lamps, and in combination with
colour rendering makes for correct recognition and differentiation of colours and defines room ambience
direction of light and modelling determine how well we recognise three-dimensional forms and surface structures.