| 摘要 |
PROBLEM TO BE SOLVED: To prevent such a situation that the visual axis detection result is mistaken by a wink when the individual difference data of an observer is obtained, and the following visual axis detecting operation can not be precisely performed. SOLUTION: When judging means 100 of visual axis detecting impossibility judges an impossibility of visual axis detection, and wink detecting means 10 detects a wink, the visual axis detecting operation is repeated at least once without changing control methods of lighting means IRED-0 to IRED-7, 107 for lighting the eyeballs of an observer and light receiving means 14, 101. |
