Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical pickup and optical recording and reproducing apparatus using the same

An optical pickup, optical modulator technology, applied in the direction of recording/reproducing by optical method, optical recording head, beam guiding device, etc., can solve the problems of various optical disc media that cannot cope with the use of beams with different wavelengths

Inactive Publication Date: 2005-02-02
SAMSUNG ELECTRO MECHANICS CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] However, the conventional optical pickup has a problem in that, since it employs a fixed diffraction grating that allows only a specific wavelength, the optical pickup cannot cope with various optical disc media using light beams having different wavelengths.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical pickup and optical recording and reproducing apparatus using the same
  • Optical pickup and optical recording and reproducing apparatus using the same
  • Optical pickup and optical recording and reproducing apparatus using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0053] figure 2 is a view showing the structure of an optical pickup according to an embodiment of the present invention.

[0054] refer to figure 2 , the optical pickup of the present invention is configured to convert the beams B1, B2 and B3 generated by the light source assembly 10 into parallel beams through the achromatic lens 20, and the parallel beams pass through the beam splitter 30 and are respectively converted into three multi-beam groups MB1, MB2 and MB3 are reflected and diffracted by the light modulator 40 at the same time, and the multi-beam groups MB, MB2 and MB3 are reflected by the beam splitter 30 again, and focused on the corresponding tracks of the optical disc D through the objective lens 50 respectively.

[0055] In addition, multiple beam groups reflected from the optical disc D are focused on corresponding units of the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to an optical pickup, and more particularly to an optical pickup, which can promptly process optical disk information using a light source module for selectively generating light beams with different wavelengths, such as 650 nm, 780 nm and 405 nm, and an optical modulator for reflecting and diffracting an incident light beam to generate multiple beams. In the present invention having the above construction, since the optical pickup simultaneously reads a plurality of data bits of an optical disk using multiple beams at the time of reading optical disk information, it can promptly process optical disk information. Further, the optical pickup of the present invention can cope with various types of optical disk media using light beams with different wavelengths.

Description

technical field [0001] The present invention relates generally to an optical pickup, and more particularly to an optical pickup and an optical recording and reproducing apparatus using the same, which can rapidly process information on an optical disc without increasing the rotational speed of the optical disc, and cope with the use of optical discs with different wavelengths. various types of optical disc media with beams of light. Background technique [0002] In general, an optical pickup is a device for reproducing signals recorded on various optical discs or recorded signals on an optical disc. In recent years, optical pickups having large storage capacity and high processing speed have been developed. [0003] First, the development trend of the storage capacity of the optical pickup is described below. [0004] In recent years, digital versatile disc (DVD) and compact disc (CD) products have generally been used. [0005] For example, a CD product stores 650 MB of i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/00G11B7/12G11B7/125G11B7/1275G11B7/1353G11B7/14
CPCG11B7/1275G11B2007/0006G11B7/1353G11B7/128
Inventor 李钟瑞尹相璟
Owner SAMSUNG ELECTRO MECHANICS CO LTD