Methods and systems for fabrication of shaped fiber elements for scanning fiber displays
A fiber optic element of a fiber scanning system includes a motion actuator having longitudinal side members, an internal orifice, a first support region, a central region, and a second support region. The fiber optic element also includes a first fiber optic cable passing through the internal orifice and having a first fiber joint as well as a second fiber optic cable passing through the internal orifice. The second fiber optic cable has a second fiber joint disposed in the central region and spliced to the first fiber joint, a second coupling region, a light delivery region, and a light emission tip. The light delivery region is characterized by a first diameter and the light emission tip is characterized by a second diameter less than the first diameter.
1. A fiber optic element of a fiber scanning system, the fiber optic element comprising:
a fiber optic cable having:
an input region;
a support region coupled to the input region; and
a light emission tip, wherein the support region is characterized by a first diameter and the light emission tip is characterized by a second diameter less than the first diameter, wherein the input region is located further from the light emission tip than the support region; and
a motion actuator having:
longitudinal side members;
an internal orifice disposed between the longitudinal side members;
a first region disposed at one end of the motion actuator;
a central region; and
a second region disposed at an opposing end of the motion actuator;
wherein the support region of the fiber optic cable is disposed in the second region of the motion actuator,
wherein the input region of the fiber optic cable is disposed within the longitudinal side members and separated from the longitudinal side members by a flexure distance.
2. The fiber optic element of claim 1 wherein the fiber optic cable tapers from the support region to the light emission tip.
3. The fiber optic element of claim 1 wherein the input region is disposed in the central region of the motion actuator.
4. The fiber optic element of claim 1 wherein the support region of the fiber optic cable is in mechanical contact with second region of the motion actuator.
5. The fiber optic element of claim 1 wherein:
the fiber optic cable further comprises a second support region coupled to the input region; and
the second support region is disposed between the first region of the motion actuator.
6. The fiber optic element of claim 5 wherein:
the support region of the fiber optic cable is in mechanical contact with second region of the motion actuator; and
the second support region of the fiber optic cable is in mechanical contact with the first region of the motion actuator.
7. The fiber optic element of claim 5 wherein the input region is characterized by a third diameter less than the first diameter, and the second support region is characterized by a fourth diameter greater than the third diameter.
8. The fiber optic element of claim 5 wherein the second support region is characterized by the first diameter.
9. The fiber optic element of claim 1 wherein:
the motion actuator comprises a piezoelectric actuator; and
the longitudinal side members comprises a first piezoelectric element operable to contract/expand and a second piezoelectric element operable to expand/contract in opposition to the first piezoelectric element.
10. The fiber optic element of claim 1 wherein the internal orifice of the motion actuator is characterized by a cylindrical profile defined by an internal diameter and the support region is characterized by an outside diameter substantially equal to the internal diameter.
11. The fiber optic element of claim 10 wherein:
the fiber optic cable further comprises a second support region coupled to the input region;
the second support region is disposed between the first region of the motion actuator; and
the second support region is characterized by an outside diameter substantially equal to the internal diameter.
12. The fiber optic element of claim 1 wherein the input region is characterized by a third diameter less than the first diameter.
13. The fiber optic element of claim 1 wherein the input region is disposed in the first region of the motion actuator.