Patent ID: 8362974

Claim:
A wearable display system for displaying an image in front of an eye of a user, comprising: a head-mounting member configured to be mounted on the head of the user, the head-mounting member comprising a speaker and a headphone arm connected to the speaker; and a wearable display unit, comprising (i) an image-display unit having a screen configured to display the image, (ii) a holder connected to the image-display unit, (iii) an attachment that affixes the holder to the head-mounting member mounted to the head of the user, and (iv) a joint that affixes the holder to the attachment, the joint comprising first and second joint portions, the first joint portion comprising a first shaft member and a first bearing member, and the second joint portion comprising a second shaft member and a second bearing member, the first bearing member supporting the first shaft member such that the first shaft member is rotatable about a first virtual rotation axis, and the second bearing member supporting the second shaft member such that the second shaft member is rotatable about a second virtual rotation axis different from the first virtual rotation axis, the joint being thus swingable in multiple directions relative to the attachment, each of the directions being a respective direction of swing around a respective one of a plurality of virtual rotation axes that are different from one another, wherein, the joint is configured so that a torque for swinging the holder around at least the first virtual rotation axis is different from a torque for swinging the holder around at least of the second virtual rotation axis, wherein, the joint is situated so that the at least first virtual rotation axis is an axis about which the image-display unit, fixed to the holder, swings in a plane including a vertical direction, and wherein the torque required for swinging the image-display unit around the first virtual rotation axes is greater than the torque required for swinging the image-display unit around another of the virtual rotation axes.