At Lighting Analysts we understand the importance of conservation of cultural artefacts, such as those found in museums and galleries. Light fundamentally effects materials through Photo-Chemical Action and Radiant Heating effects, prolonged exposure of sensitive materials to light, especially daylight, is detrimental to the longevity and preservatin of those artworks or artefacts. Lighting Analysts work with leading museums and galleries, aiding in the design and analysis of both natural and artificial lighting systems.

We are particularly experienced in the simulation and analysis of cumulative exposure (kilolux/hours) within museum and gallery spaces, from both daylight and electric lighting. In addition, we understand the importance of brightness hierarchy within these spaces, what objects require in terms of light levels, exposure and more importantly how museums and galleries should be design to most effectivily provide a seamless adaptation from space to space, therefore enhancing display quality and providing an excellent visitor experience.


The annual light exposure is the cumulative amount of visible light incident at a point, within the building, over a 1-year period (annually). The measure is used for museum and gallery environments containing light sensitive exhibits, where limitations for such exhibits exist.

 In an art gallery the maximum annual light exposure for very light sensitive objects such as water colours is 150,000 lux hours, whereas more light fast pigments such as oil have a higher value of 600,000 lux hours.

 Lighting Analysts used 3D computer models coupled with state of the art lighting simulation software to accurately predict the cumulative exposure due to the presence of both daylight and artificial lighting. Using Climate-based Daylight Analysis provides a realistic analysis of the expected daylight levels within the local climate. Results are presented in CAD overlaid upon drawings of the building or gallery, providing a virtual map of the likely cumulative exposure across the vertical and horizontal planes of the space. This is an invaluable resource for museum and gallery conservators and designers, aiding them to better understand the daylight and annual exposure within the space.