Unit DLight is a digital ambient light detection sensor. The hardware uses a BH1750FVI illuminance sensor IC (I2C interface), with built-in 16-bit AD conversion supporting (1 ~ 65535 lx) illuminance value detection. It features a small size and low power consumption, making it suitable for various illuminance detection and light control adjustment scenarios.
Question: What is the difference between a digital ambient light sensor and a light intensity detection sensor? (Can the brightness of a computer screen be measured?)
Illuminance: Refers to how much light is received at a certain place, measured in lux.
Brightness: The brightness perceived by the human eye, measured in candela per square meter (cd/㎡).
Illuminance and brightness, one refers to how much light is received per unit area, and the other refers to how bright it appears per unit area.
Brightness is related to reflectivity; the reflectivity of the palm and the back of the hand is different, resulting in different brightness levels.
Therefore, the result output by the digital ambient light sensor is the amount of light, and the light source can be: incandescent, fluorescent, halogen, white LED, sunlight.
The light intensity detection sensor outputs an analog value of light brightness, which can be divided into ultraviolet photoresistors, infrared photoresistors, and visible light photoresistors. Here, our sensor is a visible light intensity detection sensor.
