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- Electric_eye abstract "An electric eye is a photodetector used for detecting obstruction of a light beam. An example is the door safety system used on garage door openers that use a light transmitter and receiver at the bottom of the door to prevent closing if there is any obstruction in the way that breaks the light beam. The device does not provide an image; only presence of light is detectable. Visible light may be used, but infrared radiation conceals the operation of the device and typically is used in modern systems. Originally systems used lamps powered by direct current or the power line alternating current frequency, but modern photodetector systems use an infrared light-emitting diode modulated at a few kilohertz, which allows the detector to reject stray light and improves the range, sensitivity and security of the device.".
- Electric_eye wikiPageExternalLink v=onepage&q&f=true.
- Electric_eye wikiPageID "5624327".
- Electric_eye wikiPageRevisionID "586334833".
- Electric_eye hasPhotoCollection Electric_eye.
- Electric_eye subject Category:Optical_devices.
- Electric_eye type Agent.
- Electric_eye type Company.
- Electric_eye type Organisation.
- Electric_eye type RecordLabel.
- Electric_eye type Organization.
- Electric_eye type Agent.
- Electric_eye type SocialPerson.
- Electric_eye type Thing.
- Electric_eye comment "An electric eye is a photodetector used for detecting obstruction of a light beam. An example is the door safety system used on garage door openers that use a light transmitter and receiver at the bottom of the door to prevent closing if there is any obstruction in the way that breaks the light beam. The device does not provide an image; only presence of light is detectable.".
- Electric_eye label "Electric eye".
- Electric_eye sameAs m.0dwy27.
- Electric_eye sameAs Q12410294.
- Electric_eye sameAs Q12410294.
- Electric_eye wasDerivedFrom Electric_eye?oldid=586334833.
- Electric_eye isPrimaryTopicOf Electric_eye.