1. A path guidance method capable guiding an autonomous mobile device to a location specified by a call unit for enabling the autonomous mobile device to perform a predetermined operation thereat, whereas the autonomous mobile device is configured with a directional wireless reception unit while the call unit is configured with a wireless transmission unit, path guidance method comprising steps of:
(a) enabling the wireless transmission unit to issue a radio wave guidance signal;
(b)enabling the wireless reception unit to receive the radio wave guidance signal; and
(c) enabling the autonomous mobile device to evaluate and determine a moving direction with respect to the intensity and direction of the received radio wave guidance signal, and thus directing the autonomous mobile device to move accordingly.
2. The path guidance method of claim 1, wherein the step (b) further comprises a step of: enabling the autonomous mobile device to rotate without moving.
3. The path guidance method of claim 1, wherein the moving direction of the step (c) is determined with respect to the maximum of the intensity of the received radio wave guidance signal.
4. The path guidance method of claim 1, wherein the moving direction of the step (c) is determined with respect to the minimum of the intensity of the received radio wave guidance signal.
5. The path guidance method of claim 1, wherein the moving direction of the step (c) is determined with respect to the maximum and the minimum of the intensity of the received radio wave guidance signal.
6. The path guidance method of claim 1, further comprising a step of:
making an evaluation, after the performing of the step (c) is accomplished, to determine whether the autonomous mobile device is coming into contact with an obstacle, and enable the autonomous mobile device to perform a displacement action if so.
7. The path guidance method of claim 1, further comprising a step of:
making an evaluation, after the performing of the step (c) is accomplished, to determine whether the intensity of the received radio wave guidance signal is higher than a first predefined value, and enable the autonomous mobile device to perform a predetermined action if so.
8. The path guidance method of claim 7, wherein the first predefined value is specified as the intensity of the received radio wave guidance signal while the autonomous mobile device is situated at a specific distance not far away from the call unit.
9. The path guidance method of claim 7, wherein the predetermined action is defined as to reduce the speed of the autonomous mobile device.
10. The path guidance method of claim 7, wherein the predetermined action is defined as to enable the autonomous mobile device to perform a turn.
11. The path guidance method of claim 7, wherein he predetermined action is defined as to enable the autonomous mobile device to standby.
12. The path guidance method of claim 1, wherein further comprising a step of: making an evaluation to determine whether the autonomous mobile device had reached a location specified by the call unit, after the performing of the step (c) is accomplished,
13. The path guidance method of claim 12, wherein a second predefined value is defined to be larger than the intensity of the received radio wave guidance signal when the autonomous mobile device has not yet reached the location specified by the call unit and is still a significant distance away from the call unit.
14. The path guidance method of claim 13, wherein the second predefined value is specified as the intensity of the received radio wave guidance signal while the autonomous mobile device is situated at a specific distance not far away from the call unit.
15. The path guidance method of claim 1, wherein the call unit is configured with a charging station while the autonomous mobile device is comprised of a capacity inspection unit.
16. The path guidance method of claim 15, further comprising step of:
before the performing of the step (a), enabling a wireless transmission unit of the autonomous mobile device to issue a charging request signal as the capacity inspection unit detects that the power of a power unit is not sufficient, and then enabling the step (a) to be performed after the charging request signal is received by a wireless reception unit of the charging station.
17. The path guidance method of claim 1, wherein the wireless reception unit is a directional antenna.
18. The path guidance method of claim 17, wherein the directional antenna is an antenna selected from the group consisting of a Yagi antenna, a horn antenna, and a panel antenna.
19. The path guidance method of claim 1, wherein the wireless reception unit is an omni-directional antenna having a metal shielding layer arranged at the exterior thereof while the metal shielding layer is capable of orientating the omni-directional antenna to receive the radio wave guidance signal at its maximum only from a specified direction.
20. The path guidance method of claim 16, wherein the wireless transmission unit is an omni-directional antenna.
21. The path guidance method of claim 1, wherein the wireless transmission unit is an omni-directional antenna.
22. The path guidance method of claim 16, wherein the wireless reception unit is an omni-directional antenna.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An eyeglass frame, comprising:
an outer frame;
an inner frame disposed at an inner side of the outer frame and attached to the outer frame;
temples, each being attached to the outer frame and configured to rotate between an inwardly folded position and an outwardly opened position, relative to the outer frame; and
a right eyeglass lens and a left eyeglass lens, each being attached to the inner frame;
wherein the outer frame includes a right opening portion and a left opening portion disposed in such a manner to correspond to the right eyeglass lens and the left eyeglass lens, respectively, and
wherein the right opening portion defines a gap between a right end of the outer frame and the right eyeglass lens, and the left opening portion defines a gap between a left end of the outer frame and the left eyeglass lens.
2. The eyeglass frame according to claim 1,
wherein the outer frame includes an outer front frame,
wherein the outer front frame has a right outer rim and a left outer rim surrounding the right opening portion and the left opening portion, respectively, an outer bridge connecting the right outer rim and the left outer rim, and a connection arm extending from an end of each of the right outer rim and the left outer rim and being connected to a corresponding one of the temples,
wherein the inner frame includes an inner front frame,
wherein the inner front frame has a right inner rim and a left inner rim holding the right eyeglass lens and the left eyeglass lens, respectively, and an inner bridge connecting the right inner rim and the left inner rim, and
wherein the inner bridge is attached to the outer front frame.
3. The eyeglass frame according to claim 2,
wherein the inner front frame is attached to the outer front frame by a fixing mechanism.
4. The eyeglass frame according to claim 3,
wherein the fixing mechanism includes a concave portion disposed in an inner side surface of the outer bridge of the outer front frame, and a convex portion disposed on an outer side surface of the inner bridge of the inner front frame and inserted in the concave portion.
5. The eyeglass frame according to claim 2,
wherein the outer front frame is made of a resin.
6. The eyeglass frame according to claim 2,
wherein the inner front frame is made of a metal.
7. The eyeglass frame according to claim 2,
wherein each of the connection arms of the outer front frame is connected to the corresponding one of the temples through a hinge.
8. The eyeglass frame according to claim 7,
wherein each of the connection arms and the corresponding one of the temples in the outer front frame are connected through an elastic part in addition to the hinge.
9. The eyeglass frame according to claim 2,
wherein the outer front frame is a full rim type and the inner front frame is a half rim type.
10. The eyeglass frame according to claim 2,
further comprising nose pads disposed on the inner front frame.
11. The eyeglass frame according to claim 1,
wherein the outer frame includes an outer front frame having a right outer rim and a left outer rim surrounding the right opening portion and the left opening portion, respectively, and
wherein a curvature of the right outer rim is greater than a curvature of the right eyeglass lens, and a curvature of the left outer rim is greater than a curvature of the left eyeglass lens.
12. The eyeglass frame according to claim 1,
wherein a part of the right eyeglass lens is disposed outside the right opening portion, and a part of the left eyeglass lens is disposed outside the left opening portion.
13. The eyeglass frame according to claim 1,
wherein the inner front frame has a right inner rim and a left inner rim, and
wherein the right inner rim adjoins only a portion of a perimeter of the right eyeglass lens and the left inner rim adjoins only a portion of a perimeter of the left eyeglass lens.