I. Definition of horizontal & vertical illuminance
Illuminance is a measure of the extent to which light illuminates the surface. In other words, vertical illumination can be defined as the measurement of the light perception of the camera and our eyes as they are reflected from the surface. It is measured in units of "lux" and is mainly used for televised games and events.
Our focus is on sports lighting. Usually, two measurements are used in the sports.
1. Definition of horizontal illumination
This is measured on an imaginary surface that is positioned horizontally, one meter above the surface of the field. Multiple calculations were performed on the grid.
2. Definition of vertical illumination
This is measured on an imaginary surface that is vertically positioned. The difference between vertical and horizontal brightness is that we must specify the position and orientation of the surface. In addition, the verticality can have different directions, including perpendicular to the camera and the viewer.
II. Calculation and illumination of LED sports lights
All sports have major main competition areas and total areas. The total area includes the competition area and the safety area. In motion, illumination is measured in terms of minimum horizontal illumination (on the imaginary surface mentioned above) and uniformity of illumination. Brightness is important in motion because it is an illuminated plane that needs to be properly visible to the viewer, TV viewer, camera, etc. Vertical illumination is a consideration in broadcast competitions. Due to the large size of some sports fields and arenas, efficient lighting systems are essential.