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Optical Sensors And Their Use In Medical Field
Authors: Vijay Laxmi Kalyani, Varsha Sharma

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ensors are device which is identified and respond an electrical or optical signal. A sensor is much type like Temperature, pressure, level sensors, Bio sensors, Gas & chemical sensors, Acceleration, moisture, humidity, speed, etc. Optical sensor convert light ray into electrical signals. Optical sensor measure physical quantity of light. Optical sensor categories by wavelength, forward (drive) current, range, power dissipation, packaging type
and maximum CE voltage. Generally wavelength used - 640 nm, 700 nm, 800 nm, 940 nm and 950 nm. And the maximum CE voltage can range from 5 V to 70 V. Most CE voltage for sensor is 30V.An optical sensor is a sensor which uses an optical fiber as a sensing component. A fiber are used because of narrow size, No electric power is used. In this paper we discuss optical sensors and
their application in medical field