Brightness following of 3500 lumens,we feel very comfortable to the human

700 the visible wavelength range of nanometers.Inversely proportional to the energy light waves and wavelength,short wavelength,high energy.The visible light,the maximum value of the purple energy,minimum energy red light,and the visible light spectrum is ultraviolet light.In fact,it contains a lot of natural light in the ultraviolet.Ultraviolet light of high energy,and due to the ultraviolet energy of your cornea and retina damage.What is glare?Unit of measurement of the intensity of the brightness and light is the lumens.For example,in the room,most of the artificial light intensity is from 400? 600 lumens.Sunny outdoors,if you want to float in the brightness wide range,thousand lumen shade of brightness,high-speed roads and other specific areas,there is a large area,such as the brightness of 6,000 lumens.Brightness following of 3500 lumens,we feel very comfortable to the human eye.When the brightness of direct or reflected light from reaching the 4000 lumens,the human eye will receive light became difficult.We are the white flash that only glare,in order to see,it tries to efforts to refer to these very bright area.Much of the light entering the eye is decreased because,in order to cause discomfort,we narrowed started.When the brightness reaches 10,000 lumens,light of reason is too your eyes strongly,it will start a completely filter the light.This is such a strong light exposure to bring temporary or permanent blindness too long,can cause damage.On sunny days,large-scale snow,we stare into the light in the absence of any protective measures that lead to the light,it can be up to 12,000 lumens of brightness,reflection "snow blindness."You can perceive the light visible to the human eye.We,we often referred to as white light,in other words,please see the visible light emitted from the sun appears to be colorless.In fact,it is a combination of optical frequency mixing that has been colored.All of mixed color of light ?? flux in the visible spectral range,namely,white,is colorless.
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