Modular components for wearable electronic devices

A component for a wearable electronic device, comprising:

• a flexible housing defining an internal volume;
• a stiffener disposed within the internal volume, the stiffener being flexible along a first axis and rigid along a second axis and a third axis, the second axis and the third axis being perpendicular to the first axis and to each other, wherein the stiffener is in direct contact with an electronic internal component;
• a first connector removably and electrically attachable to a head-mounted display;
• a second connector removably and electrically attachable to a supplemental unit;
• and
• an operational element disposed in the internal volume, the operational element electrically connected to at least one of the first connector or the second connector.

A component for a wearable electronic device including a display, the component comprising:

• a printed circuit board including electronic elements;
• a retention band connector configured to provide a mechanical connection between the component and a retention band;
• a display connector configured to provide data and power to the display;
• and
• a housing, the housing including a material overmolded around at least a portion of the printed circuit board;
• and
• a stiffener disposed within the housing and in direct contact with an electronic internal component, the stiffener being flexible in a first direction and rigid in a second direction perpendicular to the first direction.

A system configured to be used with the head of a user, comprising:

• a head mounted display (HMD), the HMD including:
• a flexible housing defining a flexure plane, the flexible housing configured to flex in and out of the flexure plane;
• a stiffener disposed within the flexible housing and in direct contact with an electronic internal component;
• a display attached to the flexible housing;
• and
• an electrical input attached to the flexible housing and electrically connected to the display;
• a flexible band;
• an intermediate member having a first end removably connectable to the HMD, the intermediate member extending from the HMD to the flexible band;
• and
• a supplemental unit removably connectable to a supplemental unit connector positioned between the first end and the flexible band.