Contrast Greater Than the Brightness of the Image Can Determine the Clarity
Full color LED display must be so high brightness? Chasing the source, to improve the full color LED display brightness is essentially to increase the consumer on the screen pictures, video and other content visibility. The study shows that the human eye for the color of the feelings, to be greater than the feeling of light and dark. The visual cells on the human retina consist of cones and columnar cells. Because each cone cells are connected to a optic nerve endings, so the resolution is high, able to distinguish the details and color; and a number of columnar cells connected to a optic nerve endings, so the resolution is low, only to distinguish the contours of graphics. Although the human eye on the brightness of the total sense of a wide range, but when the human eye to adapt to a certain ambient brightness, the sensory range will be limited, then the color of the cone-shaped cells play a major role.
So the degree of color to determine the degree of contrast, more than the brightness of the overall image to determine the subjective clarity. In general, the greater the contrast, the more clear the image eye-catching, the more vivid colors; and contrast is small, it will make the whole picture are gray, the human eye is not easy to distinguish. Need to pay special attention to the contrast for the dynamic video display effect to be greater, because the dynamic image in the light and dark conversion faster, the higher the contrast, the more easily the human eye to distinguish such a conversion process.
Black light full color LED display than white light products, higher contrast
Therefore, in the outdoor environment with its blind pursuit of high brightness caused by light pollution and high energy consumption, increase the outdoor full color LED display contrast to improve the image recognition is more feasible method. In the same brightness, the greater the contrast, display the image layering stronger, more vivid, consumers will have a more clear viewing effect.
According to the test results, the outdoor product black light contrast is generally 3000: 1, while the outdoor white light contrast is generally in the 1000: 1 (due to strong outdoor ambient light, white light background brightness than the test environment, the relative contrast Will be lower.) This is because the use of black plastic stent cups and PPA to package the black light LED display full screen background color is more uniform, can absorb external stray light, which has a higher contrast than the white light.
In the entire outdoor advertising market concerned about the light environment, energy saving and emission reduction trend, the black light full color LED display is undoubtedly more competitive than the white light products