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Object lens and optical pick-up device having the same

A technology of optical pickup and objective lens, applied in the direction of beam guiding device, optics, optical components, etc., can solve problems such as difficult to ensure compatibility

Inactive Publication Date: 2011-06-08
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since manufacturers have developed discs of new standards such as HD-DVD, BD, etc., it is difficult for consumers to choose various types of discs to store data in, because discs of different standards coexist in the market, and it is difficult to ensure compatibility with other disc standards. compatible

Method used

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  • Object lens and optical pick-up device having the same
  • Object lens and optical pick-up device having the same
  • Object lens and optical pick-up device having the same

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Embodiment Construction

[0041] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0042] figure 1 is a schematic structural diagram of an optical pickup device according to an embodiment of the present invention. The optical pickup device has an optical structure and an optical path conversion mechanism, which can be adapted to drive various types of optical discs using different wavelengths and having different recording densities. In general, an optical pickup device is a device that records information by emitting a laser beam to the signal recording surface of an optical disc or reproduces information recorded on an optical disc in a non-contact manner by receiving light reflected from the signal recording surface of the optical disc .

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Abstract

An object lens and an optical pick-up device having the same capable of recording and / or reproducing a plurality of types of optical discs, the optical pick-up device including: a light emitting part (12,14,16) that emits lights having different wavelengths corresponding to the plurality of types of optical discs, and a light collecting part (30,32,34) that focuses a light having a wavelength corresponding to a type of a loaded optical disc and emitted from the light emitting part to form spots on the loaded optical disc. Accordingly, various types of optical discs using different wavelengthscan be compatibly driven in an optical recording / reproducing apparatus capable of recording and / or reproducing high / low density optical discs.

Description

technical field [0001] The present invention relates to an objective lens and an optical pickup device having the same, and more particularly to an objective lens and an optical pickup device having the same, which are suitable for driving various optical discs using different wavelengths in an optical recording / reproducing device, so that optical discs (optical recording recording and / or reproducing information on media). Background technique [0002] With the development of image and sound media, optical discs capable of recording a large amount of high-definition image and sound information have been developed and generally used. An optical disc is a recording medium that is recorded and / or reproduced by laser beams. Traditionally, optical discs such as CD (Compact Disc) or DVD (Digital Versatile Disc) were initially used. However, due to the limitations of the recording capacity of traditional optical discs (CD or DVD), new optical discs with high recording capacities ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/24G11B7/135G11B7/1374G11B7/125
CPCG11B7/1275G11B7/1353G11B7/1374G11B2007/13727
Inventor 刘长勋金明奭朴世濬
Owner SAMSUNG ELECTRONICS CO LTD