380 nm to red approx 780 nm the frequencies of light

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Unformatted text preview: cer diameter of 15 mm and an emitting frequency of 200 kHz, the range of the near field is approximately 130 mm. © Festo Didactic GmbH & Co. KG • FP 1110 185 11. Physical fundamentals 11.4 Fundamentals of optical proximity sensors Optical proximity sensors are devices which convert signals generated by light emission into electrical signals. The response of optical receivers varies according to different ranges of wavelength. Fig. 11.4.1 indicates the spectral ranges of electromagnetic emission. 492 380 10 Extreme -10 10 2 -8 10 10 -6 Red -4 Visible light Close -2 1 Cosmic rays (1) X-rays (3) Gamma rays (2) 6 10 Distant Infrared 4 10 nm Orange 3 10 780 577 622 Close Violet Blue Green Yellow Ultraviolet 1 597 455 2 10 4 10 5 6 10 10 8 10 10 µm 14 10 Radar waves (4) Radio waves (5) Fig. 11.4.1: Spectral ranges of electromagnetic light emissions The range of visible light is just a small section of the overall spectral range reaching from violet (approx. 380 nm) to red (approx. 780 nm)...
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This note was uploaded on 11/01/2012 for the course CHEMICAL 102 taught by Professor Jamesrodriguez during the Spring '12 term at Universidad Politécnica de Cartagena.

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