Increasing Adoption of Smartphones and Biometric Devices to Boost Demand for Light Sensors

 

Light sensors

Light sensors are electrical devices that detect light, detect the level of light emitted by an object, and measure intensity of light. These sensors not only help you every day by detecting lighting, responding to changes in lighting and other objects, but can also be used for robot control and more. Many people even use light sensors as motion detectors.

The most common light sensors available are ultrasonic and infrared ones. While both are quite popular they differ mainly in their functionality. For example, an ultrasonic sensor would detect the temperature difference between a set point and the ambient temperature. Infrared sensors can detect the presence of heat. An arguing based light sensor can do a variety of things depending on the sensor's functionality.

One example of an infrared sensor is a Light Emitting Diode or LED. An LED can be programmed to detect changes in the ambient environment by changing the current it uses based on its current level of brightness. It uses one of four diodes to emit photons which are detected by its photodiodes. Normally, these type of light sensors have its own power supply but in our example a simple breadboard connection can supply power to the LED.

A third example of a light sensor is a metal oxide semiconductor sensor. This sensor is made up of two layers of semiconductors a base layer and a layer of oxides that change their electrical current based on the presence of moisture present. This sensor can detect moisture changes and then either raise or lower the electrical current accordingly.

Increasing adoption of smartphones has led to high demand for ambient light sensors. According to Pew Research Center, as of February 2019, 81% of U.S. adults used smartphones compared to 77% in October 2018. These sensors also find application in biometric devices. In June 2019, Integrated Biometrics, a designer and manufacturer of high performance mobile biometric fingerprint sensors, launched Light Emitting Sensor film that provides the core capability for the “IdentiFi” series of devices from SIC Biometrics, the industry’s first mobile Wi-Fi-enabled biometric fingerprint devices.


Location: India

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