Patent ID: 8373661

Claim:
An input apparatus, comprising: an optical mouse module, comprising a light source and an optical sensor, wherein the light source is adapted to emit a light beam, and the optical sensor has a sensible distance; and a mouse pad module, disposed on the optical mouse module, the mouse pad module comprising a sliding sheet elastically coupled to the optical mouse module, wherein the sliding sheet is adapted to move in a three-dimensional space, the optical sensor and the sliding sheet are arranged along an arrangement direction, when the sliding sheet is pressed and caused to enter within the sensible distance of the optical sensor and moves along a direction perpendicular to the arrangement direction, the sliding sheet reflects the light beam to the optical sensor, so that the optical sensor senses a movement of the sliding sheet relative to the optical mouse module along a direction perpendicular to the arrangement direction, and when the sliding sheet is not pressed, an elastic force formed by coupling the sliding sheet to the optical mouse module rebounds the sliding sheet from within the sensible distance back to outside of the sensible distance, so that the optical sensor is unable to sense a movement of the sliding sheet relative to the optical mouse module along the direction perpendicular to the arrangement direction.