LT-1PA01

Murata LT-1PA01 Proximity and Illuminance Sensor measures just 3.05mm x 2.1mm x 1.1mm and integrates both an optical proximity sensor and an illuminance sensor. The proximity sensor uses a photoreceptor to measure the distance to an object based on the amount of returned light. Another photoreceptor is used to detect the amount of ambient brightness. Such sensors are widely used in smartphones to darken the screen when the phone is near the user's face during a call or to increase the brightness of the screen's backlight when used outdoor.