Wireless keyboard with improved radiation transmission

A keyboard capable of communicating with a computing apparatus having at least two radiation-based signal receivers, said keyboard comprising:

• a housing;
• a user input device mounted in the housing, the user input device comprising a plurality of user-operable keys;
• a processor for generating a corresponding key signal responsive to key-in of one of the keys;
• a radiation-based signal transmitter, set on the housing, for converting the corresponding key signal into a radiation beam and emitting the radiation beam;
• a user-adjustable guiding device having a first end and a second end, the first end abutting on the radiation-based signal transmitter such that the radiation beam emitted by the radiation-based signal transmitter enters into the guiding device from the first end and transmits out from the second end, the radiation beam transmitting out from the second end of the guiding device having a first covered zone;
• and
• wherein the second end of the guiding device approaches one of the at least two radiation-based signal receivers by adjusting the guiding device when said keyboard communicates with the computing apparatus, such that said one of the at least two radiation-based signal receivers is located in the first covered zone of the radiation beam led out from the second end of the guiding device.

A first electronic device capable of communicating with a second electronic device via a radiation beam, said first electronic device comprising:

• a housing;
• a radiation-based signal transmitter, disposed on the housing, for emitting the radiation beam;
• and
• a guiding device having a first end and a second end, the first end disposed on the housing and neighboring to the radiation-based signal transmitter such that the radiation beam emitted by the radiation-based signal transmitter enters into the guiding device from the first end, and substantially transmits along the longitudinal axis of the guiding device and out from the second end.