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Optical pickup apparatus

A technology of optical pickup and equipment, which is applied in the direction of optical recording/reproduction, head configuration/installation, instruments, etc., can solve the problems of increasing the number of parts, weight and cost, and achieve the effect of reducing weight and cost

Inactive Publication Date: 2008-11-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] As described above, since the actuator restricting means and the substrate pressing part are provided separately, the conventional structure brings about problems of increased number of parts, weight and cost

Method used

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  • Optical pickup apparatus
  • Optical pickup apparatus
  • Optical pickup apparatus

Examples

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no. 1 example

[0027] Will refer to Figure 1A to 2B The first embodiment of the present invention is described. Figure 1A with Figure 1B Is a diagram describing the structure of the optical pickup apparatus according to the first embodiment of the present invention, in which Figure 1A Is a floor plan, Figure 1B It is a longitudinal cross-sectional view seen from the front. Figure 2A with Figure 2B Is showing Figure 1A with Figure 1B An enlarged view of the main part (actuator part) of the structure of the optical pickup device shown in. In particular, Figure 2A Is an enlarged plan view showing the main part, Figure 2B It is a horizontal cross-sectional view seen from the side.

[0028] Such as Figure 1A to 2B As shown, the objective lens 1 is mounted at the end of the lens holder 2 in the actuator of the optical pickup device. The lens holder 2 is provided with a focusing coil 5 and a tracking coil 6. The focusing coil 5 is used to drive the light beam 19 detected by the objective lens...

no. 2 example

[0036] The second embodiment of the present invention will be described with reference to FIGS. 5A to 5C. 5A, 5B, and 5C are diagrams showing the structure of an optical pickup apparatus according to a second embodiment of the present invention, in which FIG. 5A is a plan view, FIG. 5B is a longitudinal sectional view viewed from the front, and FIG. 5C is a side view.

[0037] As shown in FIGS. 5A to 5C, the objective lens 1 is mounted to one end of the lens holder 2 of the actuator of the optical pickup device. The lens holder 2 is provided with a focusing coil 5 and a tracking coil 6. The focusing coil 5 is used to drive the light beam 19 detected by the objective lens 1 in the focusing direction, and the tracking coil 6 is used to drive the light beam 19 in the tracking direction. The magnet 3 as a magnetic circuit device is provided on the base plate 7 to clamp the focus coil 5 and the tracking coil 6.

[0038] The lens holder 2 is mounted to four elastic support members 4, wh...

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PUM

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Abstract

This invention discloses an optical pickup apparatus including: an optical pickup actuator including an objective lens for converging an optical beam emitted from a light source to a surface of a recording medium, a lens holder for holding the objective lens, an elastic support member for elastically supporting the lens holder at its one end to be capable of driving the lens holder, and a base member for fixing and holding the other end of the elastic support member; a casing that supports the base member of the actuator; a flexible substrate for taking a signal from the optical beam; a substrate pressing member for restricting floating of the flexible substrate; and an actuator restricting holding part that is mounted integrally with the substrate pressing member and holds the base member while restricting operation of the base member to a predetermined operation. The number, weight and cost of components can be reduced according to this invention.

Description

Technical field [0001] The present invention relates to an optical pickup device, and more particularly, to an optical pickup device suitable for recording / reproducing information using an optical disc used as a recording medium. Background technique [0002] First reference Figure 3A -4B describes conventional techniques. in Figure 3A In -4B, the optical pickup device using the optical disc 11 as the recording medium includes a driving device for controlling the focus direction of the light beam 19, which is detected by the objective lens 1, and is guided to the best focus position on the optical disc 11; used to follow the optical disc Tracking direction driving device for a specific track on 11; and, if possible, a tilt direction driving device for tilting the objective lens 1 according to the tilt of the optical disc 11, so that information can be recorded on the optical disc 11 or copied and recorded on the optical disc 11 Information. [0003] As a focus direction driving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/09G11B7/08
CPCG11B7/0933G11B7/13
Inventor 佐古真一
Owner SHARP KK