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Actuator for an optical scanner

A technology of optical scanners and actuators, applied in the direction of head configuration/installation, etc., which can solve problems such as the limitation of the number of tracks, and achieve the effect of small sensitivity reduction

Inactive Publication Date: 2007-11-21
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore the number of orbitals is limited

Method used

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  • Actuator for an optical scanner
  • Actuator for an optical scanner
  • Actuator for an optical scanner

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Embodiment Construction

[0021] Fig. 1 shows a scanner 1 for an optical storage medium, which utilizes an actuator 2 according to the present invention to move the objective lens vertically and horizontally to perform focus and tracking control. In the figure, the actuator 2 is partially hidden by the cover 8. Fig. 2 shows the optical scanner 1 with the cover 8 removed. As you can see now, the actuator 2 has a lens holder 3 for supporting the objective lens 7, and two magnets 4 for focusing and tracking control. The magnets are arranged on the side of the lens holder 3 and are connected with the relevant printed coils 5, 6 Interaction (cannot be seen in Figure 2). Fig. 3 shows views of the optical scanner 1 with different viewing angles. For those skilled in the art, other elements of the optical scanner 1 are known and will not be explained in more detail here.

[0022] FIG. 4 shows the lens holder 3 with the printed coil sets 5, 6, that is, the actuator 2 without the magnet 4. Each of the printed coil g...

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Abstract

The invention relates to an actuator (2) for an optical storage medium scanner, and a device for reading and / or writing on an optical storage medium using an actuator such as this. The invention proposes an actuator (2) for an optical scanner (1) with a lens holder (3) for supporting an objective lens (7) and printed coils (5, 6) for focus and tracking control , six printed coils (5, 6) are arranged on each of two opposing surfaces of the lens holder (3) and interact with associated magnets (4), each magnet having 16 poles.

Description

Technical field [0001] The present invention relates to an actuator of an optical storage medium scanner, and a device for reading and / or writing on an optical storage medium using an actuator such as this actuator. Background technique [0002] Actuators used for optical scanners generally utilize winding coils combined with permanent magnets in order to focus the light beam used for reading and / or writing on the optical storage medium onto the information layer of the optical storage medium. In this case, the actuator controls the tracking and focusing of the focal point relative to the data track in the information layer of the optical storage medium. [0003] Printed coils are also used in actuators instead of winding coils. The printed coil is a printed circuit with printed copper tracks, that is, the copper tracks extend parallel to the magnet. Basically, this principle works in the same way as winding a coil. The advantages of the printed coil include: the assembly process...

Claims

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Application Information

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IPC IPC(8): G11B7/09
Inventor 迈克尔·班默特铃木恒雄罗尔夫·杜珀
Owner THOMSON LICENSING SA
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