Patent attributes
A head-mounted display includes a first display screen and a second display screen to display images to respective eyes of a user. The head-mounted display further includes a first member comprising a first rack and a second member comprising a second rack. The first member is coupled to the first display screen, and the second member is coupled to the second display screen. The head-mounted display includes a button and a gear train to transfer a linear sliding motion of the button to a linear motion of the first rack in a first direction and a linear motion of the second rack in a second direction opposite to the first direction. The gear train includes a first gear engaged with the first rack and a second gear concurrently engaged with the first gear and the second rack.
