Optical module and virtual reality (VR) device

An optical module applied to a virtual reality (VR) device, comprising a bracket component, a focusing component rotatably arranged on the bracket component, a screen component fixed on the bracket component, and a lens component arranged within the focusing component;

• wherein the bracket component further comprises a position-limiting press plate and a screen bracket, and a guide groove is formed on an inner wall of the screen bracket along a circumferential direction of the screen bracket;
• wherein the focusing component further comprises a lens tube internally installed with the lens component and a focusing piece movably arranged on the lens tube, the focusing piece is installed on a surface of the screen bracket by the position-limiting press plate, a spiral guide protrusion is formed on an inner wall of the focusing piece, a protrusion matched with the guide groove and a sliding groove formed on the protrusion and matched with the spiral guide protrusion are formed on an outer wall of the lens tube along a circumferential direction of the lens tube;
• wherein the spiral guide protrusion of the focusing element is configured to rotate axially along the sliding groove on the lens tube, to enable the lens tube to move in the guide groove of the screen bracket along an optical axis, to change a distance between the screen component and the lens tube, and the position-limiting press plate is configured to perform position limiting with the focusing element at an assembly point, to prevent the focusing element from moving along the optical axis.