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Infrared-transmission apparatus having a transmission angle or direction adjustment device

  • US 5,877,880 A
  • Filed: 10/16/1996
  • Issued: 03/02/1999
  • Est. Priority Date: 10/16/1996
  • Status: Expired due to Fees
First Claim
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1. An infrared transmission apparatus comprising:

  • a first transmission device having an infrared transmitter and an infrared receiver disposed on a computer;

    a second transmission device having an infrared transmitter and an infrared receiver disposed on a keyboard; and

    a transmission angle of divergence adjusting device arranged on one of the first transmission device and the second transmission device in order to adjust the transmission angle of divergence of the transmission device, wherein said transmission angle of divergence adjusting device is a mask.

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