Multidirectional input device
View Patent ↗A multidirectional input device includes a case; a slider slidable in a first direction and mounted to the case; a movable member mounted on an upper surface of the slider so as to be slidable in a second direction; a first reflection portion provided on any one of the movable member, the case, and the slider; a first light-emitting device arranged to be opposite to the first reflection portion; and a first light-receiving device arranged to be opposite to the first reflection portion, wherein the first reflection portion has a plurality of steps confronting the side facing the first light-emitting device, and a distance between the first reflection portion and the first light-emitting device in a third direction varies according to an area.
1. A multidirectional input device comprising:
a case;
a slider slidable in a first direction and mounted to the case;
a movable member mounted on an upper surface of the slider so as to be slidable in a second direction;
a first reflection portion provided on any one of the movable member, the case, and the slider;
a first light-emitting device arranged to be opposite to the first reflection portion; and
a first light-receiving device arranged to be opposite to the first reflection portion,
wherein the first reflection portion has a plurality of steps confronting the first light-emitting device, and
a distance between the first reflection portion and the first light-emitting device in a third direction varies depending on an area.
2. The multidirectional input device according to claim 1 ,
wherein the first reflection portion is formed to have a plurality of areas radially arranged about a predetermined position, each of the plurality of areas having a different height in the third direction.
3. The multidirectional input device according to claim 1 further comprising:
a second reflection portion;
a second light-emitting device arranged to be opposite to the second reflection portion; and
a second light-receiving device arranged to be opposite to the second reflection portion,
wherein the second reflection portion has a plurality of steps confronting the second light-emitting device, and
a distance between the second reflection portion and the second light-emitting device in the third direction varies depending on an area.
4. The multidirectional input device according to claim 3 ,
wherein the first reflection portion is provided on the slider, and
the first reflection portion has a plurality of steps having a different height in the third direction along the first direction or the second direction.
5. The multidirectional input device according to claim 1 ,
wherein the first light-emitting device and the first light-receiving device are formed integrally with each other.