Micro Photo Sensor is a type of compact device that is designed to detect light and also convert it into an electrical signal. It is generally utilized in smartphones, digital cameras, and various other electronic devices for capturing images. It utilizes a semiconductor material, like silicon, to absorb photons and produce electron hole pairs. These pairs are thereafter separated by a potential difference, producing a current that is relational to the intensity of the incident light. Micro Photo Sensor can be manufactured in very small sizes that make is perfect for the use in miniaturized devices. Also, it is known for its low noise, high sensitivity, and fast response time.