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Optical pick-up device

A technology for an optical pickup device and a light source, which is applied to the beam guide device, optical recording head, and configuration/installation of the head, etc., can solve the problem that the focusing/tracking servo cannot be performed normally, the reliability and quality of the optical pickup device are low, and the Disk reading, etc.

Inactive Publication Date: 2004-08-18
LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at this time, the tracking servo and focus servo must also be performed, resulting in an increase in the number of connections (COUPLING) and the disk cannot be read normally.
That is, the objective lens is originally driven for focusing and tracking. If the objective lens is still driven while adjusting the inclination, the connection between the servo modes will become needless to say the tilt servo, and even the focus / tracking servo will not work normally.
[0006] These problems will eventually lead to low reliability and quality of optical pickup devices, followed by unstable servo control and decreased data accuracy, resulting in low quality optical disc recording and playback devices

Method used

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Examples

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Embodiment Construction

[0015] Such as figure 2 Shown is a diagram illustrating a first example of an optical pickup apparatus for adjusting the inclination of an optical disc of the present invention, for illustrating the tilt servo operation of a collimator lens, the structure of which includes: Laser diode 3; used to turn the light emitted by the above-mentioned laser diode 3 into a parallel beam, and at the same time, a collimator lens 4 for adjusting the inclination; a transmission device 5 for driving the above-mentioned collimator lens 4; A mirror 6 whose inclination is converted into a parallel light beam is reflected to the optical disc; an objective lens 7 for concentrating the reflected parallel light; an R / T (radial / tracking) transmission device 8 for driving the above objective lens 7 ; The light beam obtained by the above-mentioned objective lens 7 is focused to any point, so as to realize the optical disc 9 for reading or recording.

[0016] exist figure 2 In the first embodiment o...

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Abstract

The invention provides an optical pick-up device for recording and playing optical recording medium data, and transforming and concentrating the light emitted from the light source for image-forming on the optical recording medium, characterized by that it comprises, a collimation lens for transforming the light emitted from the light source into collimated light beam and inclination adjustment operation, and an inclination adjusting device for drive the collimation lens for inclination operation. The optical pick-up device provided by the invention comprises a reflector and a driving arrangement.

Description

(1) Technical field [0001] The invention relates to an optical pick-up device for compensating the inclination of an optical disc in the optical pick-up device for recording and playing optical recording medium data. (2) Background technology [0002] In general, the optical pickup device is composed of a collimator lens that changes the beam emitted by the laser light source (laser diode) into a parallel beam, and a reflector that changes the optical path of the parallel beam to the direction of the optical disc, and the above-mentioned reflected beam is focused onto the optical disc. An arbitrary point on the objective lens etc. constitutes. When assembling the optical pickup substrate and the actuator on the above-mentioned optical pickup device, it is necessary to adjust the inclination (SKEW) of the light in the R (RADIAL: radial direction) direction and the T (TRACKING: tracking) direction. However, although the read-only pickup (READ ONLY TYPEPICK UP) that can only r...

Claims

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Application Information

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IPC IPC(8): G11B7/09G11B7/095G11B7/1372
Inventor 金英植
Owner LEJIN GUANGDIAN ELECTRONIC CO LTD SHANGHAI