Patent ID: 7385736

Claim:
An optical scanner, comprising: a casing comprising a hollow center; a driving system within the casing, comprising a drive belt; an optical system within the casing, comprising a carrier chassis and a clamping structure, the clamping structure coupled to the carrier chassis, and coupled to a portion of the driving belt; and a linear guiding mechanism comprising: p 2 a generally V-shaped track positioned inside the casing, wherein an upper section of the generally V-shaped track comprises a pair of support surfaces, the support surfaces extending generally parallel to a longitudinal direction of the generally V-shaped track, and the support surfaces forming an included angle; and a positioning wheel attached to the carrier chassis, wherein the positioning wheel is supported by the support surfaces on the generally V-shaped track, and the axis of the positioning wheel is perpendicular to the longitudinal direction of the generally V-shaped track.