Resettable clutch for IPD adjustment

1 . A head mountable device, comprising:

a housing defining an internal volume;

a first display slidably coupled to a first guide within the internal volume;

a second display slidably coupled to a second guide within the internal volume; and

a synchronization system comprising a first synchronizer coupled to a second synchronizer, the first synchronizer configured to move in a first direction and the second synchronizer configured to move in a second direction opposite the first direction; wherein:

the first display is removably coupled to the first synchronizer and the second display is removably coupled to the second synchronizer;

the first display is configured to disengage with the first synchronizer during a drop event;

the second display is configured to disengage with the second synchronizer during the drop event; and

the first synchronizer is configured to disengage from the second synchronizer during the drop event.

2 . The head mountable device of claim 1 , wherein the first display disengages with the first synchronizer and the second display disengages with the second synchronizer when the head mountable device experiences a force of at least about 25 Newtons during the drop event.

3 . The head mountable device of claim 1 , wherein the first synchronizer disengages with the second synchronizer when the head mountable device experiences a force of at least about 25 Newtons.

4 . The head mountable device of claim 1 , wherein the synchronization system engages the first display and the second display independently and separately from the first guide and the second guide.

5 . The head mountable device of claim 1 , wherein:

at least one of the first display or the first synchronizer includes a first detent;

at least one of the second display or the second synchronizer includes a second detent;

the first display is removably attached to the first synchronizer at the first detent; and

the second display is removably attached to the second synchronizer at the second detent.

6 . The head mountable device of claim 1 , wherein the first synchronizer is removably coupled to the second synchronizer via a friction clutch.

7 . The head mountable device of claim 6 , wherein:

the friction clutch comprises a first segment removably coupled to a second segment; and

the first segment is configured to be recoupled to the second segment by a user after being decoupled during the drop event.

8 . The head mountable device of claim 1 , wherein the synchronization system includes an actuator configured to automatically move the first synchronizer and the second synchronizer.

9 . The head mountable device of claim 1 , wherein:

the first display is configured to be recoupled with the first synchronizer by a user after the first display has been disengaged from the first synchronizer during the drop event; and

the second display is configured to be recoupled with the second synchronizer by the user after the second display has been disengaged from the second synchronizer during the drop event.

10 . A wearable electronic device, comprising: a housing defining an internal volume; an optical module and an alignment track disposed within the internal volume, the optical module slidably coupled to the alignment track; and an optical adjustment system separate from the alignment track and disposed within the internal volume; wherein: the optical module is removably coupled to the optical adjustment system via a detent locking mechanism, the detent locking mechanism comprising a locking indent configured to receive a locking insert; and a rotary mechanism configured to move the optical adjustment system, wherein: the optical adjustment system further comprises a securement pin and defines a pin aperture; the securement pin is configured to extend through the pin aperture; the securement pin is attached to the housing; and the optical adjustment system is configured to move a length of the pin aperture before disengaging from the optical module during a drop event.

11 . The wearable electronic device of claim 10 , wherein:

the optical module is configured to decouple from the optical adjustment system during a drop event; and

the optical module is configured to be recoupled to the optical adjustment system.

12 . The wearable electronic device of claim 10 , wherein:

the locking insert is disposed on the optical module, the locking insert comprising at least one of:

a spring-loaded detent ball;

a canted coil spring;

a magnet;

a leaf spring; or

a break-away pin; and

the locking indent is disposed on a contact surface of the optical adjustment system, the contact surface configured to contact the optical module.

13 . The wearable electronic device of claim 10 , wherein:

the locking indent is defined by the optical module; and

the locking insert is defined by the optical adjustment system.

14 . The wearable electronic device of claim 10 , further comprising a readjustment spring disposed between the optical module and the housing.

15 . The wearable electronic device of claim 10 , wherein a first force configured to cause a coupling of the optical module to the optical adjustment system is less than a second force configured to cause a decoupling of the optical module from the optical adjustment system.

16 . An electronic display assembly, comprising:

a housing defining an inner volume;

a first display disposed within the inner volume;

a second display disposed within the inner volume;

a synchronization system disposed within the inner volume and comprising:

a first synchronizer removably coupled to the first display; and

a second synchronizer removably coupled to the second display, wherein:

the first synchronizer is removably coupled to the second synchronizer via a friction clutch; and

the first synchronizer and the second synchronizer are configured to disengage during a drop event.

17 . The electronic display assembly of claim 16 , wherein the friction clutch comprises at least one of a conical friction clutch or a plate friction clutch.

18 . The electronic display assembly of claim 16 , wherein the friction clutch comprises a ridge configured to shear off during the drop event.

19 . The electronic display assembly of claim 16 , wherein the friction clutch comprises a ratchet lock.