Adjustable head-mounted display to accommodate different head and face sizes

A head-mounted display (HMD) comprising:

• a rod coupled to a midframe of the HMD;
• a pair of lens tubes coupled to the rod, each lens tube being movable bidirectionally along the rod;
• an actuator accessible from outside of a housing of the HMD;
• a movable elongate member coupled to the actuator and to the midframe;
• a first biasing member coupled to the movable elongate member and to the midframe, the first biasing member configured to apply a biasing force to the movable elongate member to resist movement of the movable elongate member in a direction of travel of the movable elongate member as the movable elongate member moves;
• a rotatable gear coupled to the midframe and disposed between the pair of lens tubes, the rotatable gear being engaged with the movable elongate member;
• and
• a pair of second biasing members coupled to the rod, the pair of second biasing members configured to physically bias the pair of lens tubes toward the rotatable gear.

A wearable display comprising:

• a rod coupled to a midframe of the wearable display;
• a pair of lens assemblies coupled to the rod and movable bidirectionally along the rod;
• an actuator accessible from outside of a housing of the wearable display;
• a movable elongate member coupled to the actuator and to the midframe;
• a first biasing member coupled to the movable elongate member and to the midframe, the first biasing member configured to apply a biasing force to the movable elongate member to resist movement of the movable elongate member in a direction of travel of the movable elongate member as the movable elongate member moves;
• a rotatable gear coupled to the midframe and disposed between the pair of lens assemblies, the rotatable gear being engaged with the movable elongate member;
• and
• a pair of second biasing members coupled to the rod, the pair of second biasing members configured to physically bias the pair of lens assemblies toward the rotatable gear.