What is a light sensor light sensor working principle

It is said that there is a phenomenon called "mobile phone failure delusion" disease popular in the mobile phone party, today feel the brightness of the phone is not enough, tomorrow with emotion "mobile phone power consumption is really fast," in their entangled world, there seems to be always a corner It is for the mobile phone screen problem, in fact, this kind of screen condition is likely to be related to your mobile phone light sensor, then, what is the light sensor, how do we adjust the light sensor of the mobile phone at home, And on your own mobile phone, there may be applications that you have never touched before. Today, I’ll give you a way to use light sensors that we often ignore but have always “always with us”. The trick of mobile phone caching hopes to help friends with this need!

What is a light sensor

The light sensor, said popular point is the brightness sensor we often hear, the vast majority of tablet computers and mobile terminal devices on the market are equipped with this sensor. You may wonder, where is it located on the machine? Don't worry, hold your mobile phone with your hand. There is a little red and green light on the top left or right side of the screen. This is the legendary light sensor. Its main job is to ensure that its owner can use the mobile phone in a smarter light condition. If the phone is in a very dark environment, the backlight of the mobile phone screen will be automatically darkened. This is in the reading app such as Sina Weibo. If the “night mode” is removed, the effect of adapting to human eyes can be achieved by automatically or manually adjusting the backlight.

The core equipment of the light sensor is undoubtedly inside the device, but the vent holes outside the screen also need to be frequently wiped and maintained. When we encounter a situation where the light sensor is not working, we must first consider whether there is a stain on the surface of the light sensor.

Light sensor works

The light sensor is generally located above the screen of the handheld device and consists of a light projector and a light receiver. It focuses the light on the lens through a light projector, transmits it to the lens of the light receiver, and then transmits it to the receiving sensor. The receiving sensor converts the received light signal into an electric signal; after that, the electric signal will be performed in the equipment. Series of actions, and finally achieve automatic adjustment of screen brightness function.

How to set the light sensor

General Steps: Control Panel - Settings - General - Personalization - Screen Display - Light Sensor

E71 light sensor:

The sensitivity of the light sensor can be adjusted to a minimum value; thereafter no matter how dim the environment is, the light sensor will default this minimum value to the darkest value of the machine and will not decrease (even if there is no bright night The screen brightness is the lowest value you set, and will not go low unless you use a third-party software to adjust the screen brightness.)

E72 light sensor:

Generally, the second or third gear of the light sensor can be regarded as the darkest file of the E72 light sensor, that is, the close button of the screen light sensor. Therefore, if the light sensor is set above the second gear, the screen will adjust the brightness automatically as the brightness of the environment changes. When the E72 light sensor is set to the lowest level, the screen brightness will not change. Keyboard light-sensing function can keep normal, that is, when the environment is dimmed, the keyboard light will be on; when the environment becomes bright enough to see the keyboard, the keyboard light will be turned off, which is quite energy-saving.

What is the use of light sensors?

Low-key guardian: light sensor

The light sensor is currently used in various types of handheld devices and it changes the brightness of the screen by eradicating ambient light changes. It has two basic functions. The first is to achieve the purpose of power saving through smart regulation, which is more environmentally friendly. The second is to give the user the best visual effects. The light sensor is called Light-Sensor in English. Many domestic and foreign tablet computers and mobile terminals are equipped with such devices. Since the key phones have exited the market, mobile phones that rely on screens have occupied the entire market, and the role of light sensors is increasing. Highlighted. In general, the light sensor is located above the handheld device and has a similar hole to the camera as it senses the surrounding environment.

Under normal circumstances, we can achieve the purpose of using the light sensor by setting the "automatic adjustment" option in the mobile phone, but there are also many people encounter the "failure" condition of the light sensor, mainly reflected in the light can not be automatically adjusted The strengths and weaknesses have brought a lot of trouble to our use. So how do we actually use a light sensor? In fact, we only need to first find the “wallpaper and screen brightness of the phone” item, and then cover it with opaque objects to adjust it. After that, The adjusted photoreceptors generally return to the smart state.

Clean Master: Mobile Useless Cache Cleanup

When we feel that there are too many things in the phone to occupy memory and slow down, we may wish to open the Settings - General - usage option, then the top line of storage space will gradually show the current available space and other data. At this point you can start to delete different data according to different applications. Here, Xiao Bian wants to remind everyone that applications like maps are best not to delete its cached data, because some cached map data will be used to do so. Clearing, many data and footprints will be lost, causing great inconvenience to yourself.

Editor's summary: The above is what the light sensor, light sensor work related to the introduction, understand these light sensor adjustment methods, I believe we will no longer for their own mobile phone "brightness adjustment" and feel worried In fact, as long as everyone has mastered one or two practical tips on mobile phones, the troubles in life will also be reduced. What are you waiting for? At the beginning of June, the rhythm of learning moves!

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