| 摘要 |
PROBLEM TO BE SOLVED: To provide a light guide member that can be installed on an input device, and an input device provided with the light guide member.SOLUTION: A pen input device 40 of an embodiment of the present invention constitutes an input system 50 together with a pen 3 that emits light, and the pen input device 40 comprises: a transparent light-guiding plate 1 onto the surface of which the pen 3 can come in contact, and that can couple the light of the pen 3 so as to be propagated therewithin; and image pickup units 10 and 20 that pick up portions of luminous flux propagating within the transparent light-guiding plate 1, at mutually different locations. A contact coordinate-position of the pen 3 is obtained on the basis of images captured by each of the image pickup units. |
