PROBLEM TO BE SOLVED: To improve durability and reliability by releasing an electronic apparatus from operational restriction in turning or sliding the electronic apparatus.;SOLUTION: A TOSA 20 converts an electric signal into an optical signal and emits laser light L. A mirror 56 is disposed on an optical axis O1 of laser light L emitted from the TOSA 20 and reflects laser light L. A ROSA 30 is disposed on an optical axis O2 of laser light L reflected by the mirror 56 and receives laser light L. When a second casing 52 is slid (linearly moved) with respect to a first casing 50, the ROSA 30 is slid while being positioned on the optical axis O2. When the second casing 52 is turned with respect to the first casing 50, the mirror 56 is turned around the optical axis O1, and the ROSA 30 is turned while being positioned on the optical axis O2. Thus, even when a cellular phone 10 is slid or turned, between the TOSA 20 and the ROSA 30, data transmission can be performed by optical spatial transmission.;COPYRIGHT: (C)2010,JPO&INPIT
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