Unified glare value refers to the psychological parameter that measures the subjective response of human eyes to discomfort caused by the light emitted by the lighting device in the indoor visual environment. Its value can be calculated according to the specified calculation conditions by using CIE unified glare value formula, which in a word means that the light does not glare.
Kang Mingsheng research and development director said, glare refers to the visual conditions that cause discomfort and reduce the visibility of objects due to improper distribution of brightness or extreme brightness contrast in space or time. Simply put, glare is not dazzling. Glare is also an important cause of visual fatigue. If the LED lamp is too harsh, it may cause disgust, discomfort or even vision damage. LED eye lamp contact with human eyes for a long time, the control of glare value is particularly important.
Uniform glare is the most invisible killer for businesses and consumers. On the one hand, the standard does not include uniform glare value in the compulsory certification category; on the other hand, enterprises pay more attention to other aspects of products in the production process, so the control of glare value does not arouse enough attention.
From the perspective of practical application of products, at present, some LED lamps focusing on the concept of eye protection begin to pay attention to unified glare value and control relevant parameters of unified glare value in the design and production process of lamps. Kang Mingsheng research and development responsible person thinks, many manufacturers may not be aware of the unhealthy light to the eye damage, still stay in the most shallow lighting demand, they are only concerned about lighting, just bright.