Wearable device and adjustment method
A wearable device includes a wearable element mounted on a head of a wearer, a display that displays an image in a part of a field of view of the wearer, an arm that holds the display, and a coupling element that couples the arm and the wearable element to each other. The coupling element includes a first rotation mechanism capable of rotating the arm around a first axis, and a second rotation mechanism that is provided closer to the wearable element than the first rotation mechanism is, and is capable of rotating the arm with a degree of freedom including rotation around a second axis and a third axis, the second axis being orthogonal to the first axis, the third axis being orthogonal to the second axis and intersecting with the first axis.
1. A wearable device comprising:
a wearable element mounted on a head of a wearer;
a display that displays an image in a part of a field of view of the wearer;
an arm that holds the display; and
a coupling element that couples the arm and the wearable element to each other;
wherein the coupling element includes:
a first rotation mechanism capable of rotating the arm around a first axis; and
a second rotation mechanism that is provided closer to the wearable element than the first rotation mechanism, and is capable of rotating the arm with a degree of freedom including rotation around at least a second axis and a third axis, the second axis being orthogonal to the first axis, the third axis being orthogonal to the second axis and intersecting with the first axis.
2. The wearable device according to claim 1 ,
wherein in a state where the wearable device is worn on the head, the first axis corresponding to the first rotation mechanism is adjusted to be in parallel with a direction along both eyes of the wearer, with the arm rotated by the second rotation mechanism.
3. The wearable device according to claim 1 ,
wherein in a state where the wearable device is worn on the head, the second axis is adjusted to be in parallel with an upward-downward direction of the head with the arm rotated around the third axis, and the first axis is adjusted to be in parallel with a direction along both eyes of the wearer with the arm rotated around the second axis.
4. The wearable device according to claim 1 ,
wherein the second rotation mechanism includes:
a second axis rotation mechanism capable of rotating the arm around the second axis; and
a third axis rotation mechanism that is provided closer to the wearable element than the second axis rotation mechanism, and is capable of rotating the arm with a degree of freedom including rotation around the third axis.
5. The wearable device according to claim 4 ,
wherein the third axis rotation mechanism is a joint enabling rotation around any axis including the third axis.
6. The wearable device according to claim 1 ,
wherein the second rotation mechanism is a joint enabling rotation around any axis including the second axis and the third axis.
7. The wearable device according to claim 1 ,
wherein when the arm is rotated around the first axis, holding force of the second rotation mechanism for holding the arm is larger than holding force of the first rotation mechanism for holding the arm.
8. The wearable device according to claim 1 ,
wherein the second rotation mechanism includes a lock mechanism that locks rotation around at least one of the second axis and the third axis.
9. The wearable device according to claim 1 ,
wherein the first axis passes through an eyeball of the wearer upon being adjusted to be in parallel with a direction along both eyes of the wearer with the second rotation mechanism in a state where the wearable device is worn on the head.
10. An adjustment method for the wearable device according to claim 1 , the method comprising adjusting the first axis to be in parallel with a direction along both eyes of the wearer by rotating the arm with the second rotation mechanism.
11. An adjustment method for the wearable device according to claim 1 , the method comprising:
adjusting the second axis to be in parallel with an upward-downward direction of the head by rotating the arm around the third axis; and
adjusting the first axis to be in parallel with a direction along both eyes of the wearer by rotating the arm around the second axis.