Abstract: A system for optical scanning along one line with fast random access and high optical resolution, composed of: a plurality of first lenslets (240) constructed for use with a selected media format (224), the plurality of lenslets (240) all being disposed in a single row and being spaced apart by a given center-to-center distance; a movable mount carrying the plurality of lenslets (240), a linear motion actuator (241) coupled to the mount for moving the mount in a direction substantially parallel to the single row over a distance having a maximum value that is substantially equal to or slightly greater than the given center-to-center distance; at least one light source (260); a light directing unit (234) for directing light from the source to any one or two selected lenslets (240); and a control unit for controlling the light directing unit (234).

Abstract: Apparatus for scanning a rotating optical disk, including: a scanning assembly for directing a light beam toward the disk surface and causing the beam to traverse the surface; a focusing lens unit disposed in the path of the beam to focus the beam at the surface; and a light beam deflecting element disposed in the beam path between the scanning assembly and the focusing lens unit to deflect the beam toward a direction perpendicular to the surface. The focusing lens unit may be composed of a group of individual focusing lenses spaced apart parallel to the surface, each having an optical axis that is perpendicular to the surface and each being associated with a respective track; and light directing elements disposed in line with the path at a location for directing light substantially entirely to a respective one of the individual lenses.

Abstract: Apparatus for scanning a rotating optical disk, including: a scanning assembly for directing a light beam toward the disk surface and causing the beam to traverse the surface; a focusing lens unit disposed in the path of the beam to focus the beam at the surface; and a light beam deflecting element disposed in the beam path between the scanning assembly and the focusing lens unit to deflect the beam toward a direction perpendicular to the surface. The focusing lens unit may be composed of a group of individual focusing lenses spaced apart parallel to the surface, each having an optical axis that is perpendicular to the surface and each being associated with a respective track; and light directing elements disposed in line with the path at a location for directing light substantially entirely to a respective one of the individual lenses.