A key requirement is the glare of lighting fixtures. Too much glare of lighting effect will cause eye fatigue and headache, so it is very important to reduce the glare of illumination and reflection surface in the office environment. The unified glare level (UGR) is used as a measure of glare, and is calculated according to the glare from all visible lamps except the room. In the working environment, UGR lower than 19 is considered to be more centralized and acceptable.
The level of LED light intensity (lumen) is also important. Most of these are the chromaticity levels in indoor spaces, which are usually accurately measured from a specific aspect ratio (such as the aspect ratio of the desktop in the company's office). The building lighting design standard requires the strongly recommended lumen level of different industries in the office building industry.
