optoelectric devices
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Transcript of optoelectric devices
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Optoelectric Devices
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Light• Electromagnetic radiation visible to human
eye• Frequency range
300 to 300,000,000 gigahertz• Visible region
400,000 to 750,000 gigahertz
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Figure 26-1. Photo cell.
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Figure 26-3. Construction of a solar cell.
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Figure 26-5. PN junction photodiode.
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Figure 26-6. PIN junction photodiode.
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Figure 26-7. Photodiode package.
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Figure 26-9. Voltage divider using a photodiode.
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Figure 26-12. Darkness-on DC switch.
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Figure 26-13. LED construction.
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Figure 26-14. Common LED packages.
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Figure 26-19. Commercial optical coupler.
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Semiconductor devices that interact with light• Light-detection devices• Light-conversion devices• Light-emitting devices
Light is electromagnetic radiation that is visible to the human eye
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Light-sensitive devices include photo cells, solar cells, photodiodes, and phototransistors
Light-emitting devices include the LED (light-emitting diode)
An optical coupler combines a light-sensitive device with a light-emitting device