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Optical pickup actuator and optical scanning device

An optical scanning device and optical pickup technology, applied in optical recording/reproduction, instrument, head configuration/installation, etc., can solve problems such as limiting the height of optical scanning equipment, and achieve the effect of reducing complexity and avoiding quality

Inactive Publication Date: 2009-01-07
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the optical pickup device also requires thin wire or thin optical pickup actuators in order to limit the height of the optical scanning device

Method used

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  • Optical pickup actuator and optical scanning device
  • Optical pickup actuator and optical scanning device
  • Optical pickup actuator and optical scanning device

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Embodiment Construction

[0039] Fig. 1 schematically shows various views of an optical pickup actuator 100 according to the invention. For convenience, the optical pickup actuator 100 will be referred to as an "actuator" below. refer to Figure 1A , 1B and 1C, the lens holder 101 with the lens system 102 is suspended from the connection block 104 by the suspension means 103 . The suspension means may for example comprise suspension beams such as metal elastic rods. exist Figure 1A , 1B and 1C, the suspension is shown as four metallic elastic rods 103 extending transversely to the optical axis 105 of the lens system (see Figure 1B ). The lens system 102 can be, for example, a single-element objective or a multi-element objective.

[0040] One side of each elastic rod is fixed to the lens holder, and the other side of the elastic rod is fixed to the connection block. It should be noted that in Figure 1A and 1C Only two of the four elastic rods 103 are shown in FIG. The use of four elastic rod...

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PUM

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Abstract

An optical pickup actuator for low building height includes a suspended lensholder (101) with a lenssystem (102), focusing coils (106a, 106b, 106c 106d), tracking coils (109) and magnets (107a, 107b, 107c) for cooperation with the focusing and tracking coils. The focusing and tracking coils may be arranged for tilting the lensholder in the actuator. The lowest entrance position for a radiation beam to enter a beam entrance (113) at a side of the actuator is not determined by the height and location of the coils.

Description

technical field [0001] The present invention relates to an optical pickup actuator comprising: a lens holder having a lens system with an optical axis, wherein the lens holder is suspended by means of a suspension; a magnet system separate from said lens holder; a focusing coil systems; and tracking coil systems. Wherein the lens holder has a beam entrance side substantially perpendicular to the optical axis for receiving a radiation beam. [0002] The invention also relates to an optical scanning device comprising an optical pickup actuator. Background technique [0003] Optical pickup actuators and optical reading and / or writing systems comprising optical pickup actuators for scanning optical record carriers such as compact discs (CD) or digital versatile discs (DVD) are known. For convenience, the optical record carrier may hereinafter be referred to as a disc, although a card-shaped optical record carrier is also possible. A tracking and focusing coil system on the le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/09G11B7/00G11B7/095
CPCG11B7/0956G11B7/0935G11B2007/0006G11B7/0933G11B7/08G11B7/085G11B7/09G11B7/095
Inventor M·A·H·范德阿P·M·S·M·海曼斯J·A·范鲁伊J·A·L·J·拉伊马克斯
Owner KONINK PHILIPS ELECTRONICS NV