The light sensor (https://www.easybom.com/c/sensors-transducers) is also called the brightness sensor, and the English name is Light-Sensor. As the name suggests, it is an electronic device that transmits electronic signals through changes in light.
Many electronic devices are equipped with light sensors, such as mobile phones, digital cameras, and cameras on the road that shoot cars running red lights. They all work through changes in light, and some tablets have day mode and night mode. Mode, which can automatically sense the surrounding light intensity to adjust the brightness of the device, which can not only save power, but also protect the eyes from the influence of light.
Principle of light sensor
The light sensor is composed of two components, a light projector and a light receiver. The light projector is used to focus the light by the lens, and then it is transmitted to the lens of the light receiver, and then to the receiving sensor, and the light signal received by the receiving sensor will be received. Converted into electrical signals, the electrical signals can be further used for various switching and control actions.
light sensor function
The light sensor has two basic functions. One is to achieve the purpose of saving electricity through intelligent adjustment, which is more environmentally friendly. The second is to bring the best visual effect to the user.
The light sensor can not only save electricity and protect glasses, but also can be used on street lights with environmental protection, such as street light switches, and can also be controlled by light sensors, and some crops need sunlight during the day. The door needs to be closed at night, and this device can also be applied to light sensors.
The light sensor is currently used in various handheld devices. It is used to sense the intensity of light, and then feed it back to the handheld device to automatically adjust the screen brightness to save power.
Summarized by Easybom (https://www.easybom.com).