Why Is Optical Sensors- Photodiodes So Famous?
Optical sensors are those that effectively convert light rays into electronic signals. The main objective of optical sensors is to measure the physical quantity of light, based on the type of sensor, that converts it into a form that can be read by an integrated measuring device. These sensors are utilized for contactless detection counting or the positioning of parts. They can be either internal or external. Optical sensors have the capability of gathering and transmitting the required amount of light, whereas the internal sensors are designed to measure the bends and other minor changes in direction.
What Are Photodiode Optical Sensors?
Optical Sensors- Photodiodes consists of a semiconductor p-n junction similar to a laser diode and LED. It consumes light energy in order to create electrical energy. The light that falls on the junction results in the formation of electron-hole pairs. Photodiodes are also known by alternative names like light-detector, photo-sensor, and photodetector. They are designed to specifically work in the reverse back direction. The common photodiode materials are germanium, silicon, and indium gallium arsenide.
Applications of Photodiode Optical Sensors?
Optical Sensors- Photodiodes are utilized in a wide range of everyday electronic devices. This is because they have a linear response of photodiode to light illumination. Some of the prominent applications include:
- Smoke detectors
- Cameras
- Safety equipment
- Medical applications
- CD Players
- Surveying instruments
- Solar cell panels
- Detection circuits
- Logic circuits
- The exact measurement of the intensity of light in science and industry.
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