Infrared

• Uses infrared light

• Transmitter-emitter panel

  • like the infrared diode on a remote control
  • emits signal in 60 degree cone-like a flashlight

• Receiver

  • like the infrared receiver area on a TV or VCR

• TV headphones

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Infrared systems use infrared light to transmit the signal across distance. This transmission is much like using a remote control with a TV or VCR. The signal is sent out in a 60 degree cone, like the light from a flashlight. You can recognize these systems by the infrared diode present on each receiver and transmitter. Systems for large areas will have an emitter panel with multiple diodes on it to send the signal out to a broader area. There may even be multiple emitter panels, depending on the size of the room.

You may have seen the TV headphones available in stores today that use infrared technology. The transmitter sits on top of the TV (or near it) and the user can sit across the room and still pick up the signal to listen to TV without bothering others.