Define Space Height Ratio

The Space Height Ratio (SHR) is a term used in lighting design to describe the relationship between the height of a space and the distance between the luminaires or light sources installed in the space.

In other words, the Space Height Ratio is a measure of the proportion of the space that is illuminated by the light sources installed in the space. It takes into account factors such as the height of the ceiling or upper surface of the space, the spacing and arrangement of the luminaires, and the properties of the lamps and fixtures used.

The Space Height Ratio is typically expressed as a decimal or ratio, and it is calculated by dividing the distance between the light sources by the height of the space.

The Space Height Ratio is an important consideration in lighting design as it can have a significant impact on the visual comfort and quality of the lighting environment. A low SHR may result in over-illumination or glare, while a high SHR may result in under-illumination or uneven lighting distribution. Designers may use different lighting techniques and products to achieve a balanced SHR and optimal lighting performance for the specific application.