A light sensor is an electronic apparatus that is used to detect the presence of light in an area. It provides information to the user about shape, speed, distance and dimensions.
Identification
Light sensors are used in offset printing and offer a high level of precision in industries such as laser printing.
Function
A light sensor has an "eye" that detects the products or targets (such as paper). When the target goes past the eye, the light registers on the machine.
Uses
Light sensors are used for film extrusion as well. A light sensor can be used to stop a machine if a roll of film breaks. Light sensors can sense these things much faster than humans can.
Space Exploration
Light sensors are also used in space exploration to make topographical maps of planetary surfaces. They can also detect the amount of light being given off by a planet or star.
Advancements
There have been advancements in light sensor technology through the years, especially in microcosmic and macrocosmic areas. One major advancement was the 2x to 4x increase in sensitivity to light, which makes the sensor more precise.
Tags: light sensor, Light sensors, Light sensors used, sensors used