People are accustomed to smartphone backlight is set to "automatic adjustment", but in the end how much effect?
Over the past year, the ambient light sensor applications gradually extended from the computer screen to the HDTV and smart phones, has almost become a standard feature of digital products with display functions. Ambient light sensor initial function is to light exposure suffered environmental monitoring display, and according to this parameter to adjust the brightness of the display. If the ambient light is strong, the sensor will increase display brightness, and vice versa appropriate to decrease the brightness.
For high-definition TV and computer screens, the ambient light sensor not only helps to save energy, but also can effectively reduce the direct rays of the eyes, which play a protective role in vision. For smart phones, can effectively prevent visual fatigue, if used properly can extend battery life, but inside there are many issues worth exploring.
DisplayMate (CNET famous sites often use their software to display the function evaluation) of author Raymond Soneira clear: he was several mainstream smart phones (including iPhone4, Samsung Galaxy S and HTC Desire) repeatedly to do the same test on The test results show that the effect of ambient light sensors on smartphones minimal. Detailed test results have been published on their website.
In the end these sensors can play what role? But why has played on these devices is counterproductive? Soneira succinctly describes these problems: in fact, because the ambient light sensor to collect the wrong data, you can not adjust the brightness of your smartphone screen correctly. He said: "smartphones ambient light sensor is toward the user's head, it monitors the light from the user's face, but not the cell phone behind and around the light; often it is these rays from affecting the surrounding environment to the user's vision, sensor data should follow these fishes to adjust the brightness of the screen. "
DisplayMate article published on a long, very academic, amazing amount of information, I would recommend to a friend smartphone display technology seriously interested to read.