Light Sensors

  • Jeong-Yeol Yoon


Light sensors have become very popular in many practical applications, perhaps more so than other physical sensors such as temperature, strain, and pressure sensors. They are also becoming very important in many biosensor applications, commonly used in conjunction with fluorescent dyes. In this chapter we will examine a group of light sensors that are made out of semiconductors, namely photoresistor, photodiode, and phototransistor. Light sensors are typically used together with light sources; hence we will cover them (light emitting diode and laser diode) as well.


Light Emit Diode Depletion Region Light Bulb Light Sensor Extra Electron 
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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Jeong-Yeol Yoon
    • 1
  1. 1.Department of Agricultural and Biosystems Engineering Department of Biomedical Engineering BIO5 InstituteUniversity of ArizonaTucsonUSA

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