Pen holder for interactive board

摘要

In a pen holder comprising an emitter for emitting at least one of light beam and supersonic waves to be detected by a sensor so that a signal corresponding to a position of the pen holder is generated by the sensor on the basis of the detected at least one of light beam and supersonic waves, a pen holder including an opening which is arranged at a longitudinal end of the pen holder in such a manner that a front portion of the pen including an end at which end the visible line is drawn on the board projects from the opening out of the pen holder, and through which a part of the pen other than the front portion of the pen is mountable from an outside of the pen holder onto the pen holder so that the pen is held on the pen holder.