| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an easy-to-use light pen, eliminating the need to equip it with a power source in the light emission part and reduce the weight. <P>SOLUTION: This light pen has: an LED (the light-emitting part) 22; a coil (a power generation part) 23 for generating power by receiving energy by electromagnetic induction; a circuit (an electricity-carrying means) 27 for carrying electricity to the LED 22 from the coil 23; and a writing pressure switch 26 for turning on/off the electrical continuity of the circuit 27. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
