UGR is a psychological parameter used to measure the subjective reaction of light emitted by a lighting device in an indoor visual environment to the human eye. UGR<19 is more comfortable. Why do you say this? This is based on measurements and calculated standards. As a UGR<19 Supplier, we provide an introduction to the different numerical sensitivities of UGR values.

UGR values are divided into seven, 28, 25, 22, 19, 16, 13, 10 and so on. 28 is just unbearable value, 25 is uncomfortable value, 22 is just uncomfortable value, 19 is the limit value of feeling comfortable and uncomfortable, 16 is just acceptable value, 13 is just glare value, 10 is no Glare value. Most of the illumination standards of GB50043-2004 use UGR values of 25, 22, and 19.

UGR<19

This is why we say that UGR Diffuser is more comfortable, and the uncomfortable glare in rooms or places commonly used in industrial buildings and public buildings should be evaluated by the uniform glare value (UGR). The UGR value is calculated according to the formula provided in Appendix A of GB50034-2004.