Patent ID: 6714491
Filing Date: 2004-03-30
Classification: G11B

Abstract:
A wire-suspended objective lens actuator structure, comprising:a base plate; a group of focusing and tracking magnetic iron assemblies facing each other with each assembly near a side edge of the base plate; a group of slant adjustment magnetic iron assemblies facing each other with each assembly near an alternating side edge of the base plate; a lens holder between the focusing/tracking magnetic iron assemblies and the slant adjustment iron assemblies floating above the base plate; a group of focusing coils on the lens holder for focusing the lens holder with each focusing coil linking the group of focusing and tracking magnetic iron assemblies, wherein the conductive wire inside the focusing coil runs around in a plane parallel to the base plate, and the focusing coils are serially connected together to form a circuit with a first control terminal and a first ground terminal; a group of tracking coils on the lens holder for tracking the lens holder with each tracking coil linking the group of focusing and tracking magnetic iron assemblies, wherein the conductive wire inside the tracking coil runs around in a plane perpendicular to the base plate, and the tracking coils are serially connected together to form a circuit with a second control terminal and a second ground terminal; a group of slant adjustment coils on the lens holder for adjusting the slant angle of the lens holder with each slant adjustment coil linking the group of slant adjustment magnetic iron assemblies, wherein the conductive wire inside the slant adjustment coil runs around in a plane parallel to the base plate, and the slant adjustment coils are serially connected together to form a circuit with a third control terminal and a third ground terminal; and a common ground terminal connecting to the first, second and the third ground terminal.