Check patentability & draft patents in minutes with Patsnap Eureka AI!

Optical pickup device

An optical pick-up and optical disc technology, which is applied in beam guiding devices, optical recording heads, recording/reproducing with optical methods, etc., can solve the problems that the optical pick-up device cannot be thinned, so as to avoid thickness, reduce the placement area, and avoid increasing Effect

Inactive Publication Date: 2005-11-30
FUNAI ELECTRIC CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this technique requires a beam splitter (beam splitter) having two refractive surfaces, there arises a problem that the optical pickup device cannot be thinned at low cost.

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 device
  • Optical pickup device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Preferred embodiments of the present invention are described herein with reference to the accompanying drawings. figure 1 is a perspective view of an optical pickup device according to an embodiment of the present invention, and figure 2 is a plan view of an optical pickup device according to an embodiment of the present invention.

[0029] Hereinafter, based on perspective views showing an optical pickup device according to an embodiment of the present invention figure 1 , and representing a plan view of an optical pickup device according to an embodiment of the present invention figure 2 The present invention is described.

[0030] like figure 2As shown, the optical pick-up device includes a diode 1 that emits laser light; Generate the diffracted light of the laser light produced from the laser diode 1; in the plane parallel to the information recording surface of the optical disc, the parallel flat half mirror 3 refracts at 90 degrees and reflects the laser li...

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

A laser light source emits a laser light of an elliptical shape in its polarization plane in parallel to the information recording surface of an optical disc. The laser light is incident into a raising unit, which is placed in a manner that the plane including the optical axis of the incident light and the optical axis of the reflected light forms about 45 degrees with respect to the tangential line direction of the optical disc, in a manner that the direction of the major axis of the elliptical-shaped polarization plane of the laser light is in parallel to the information recording surface of the optical disc. Then, the laser light reflected by the raising unit is focused and irradiated on the information recording surface of an optical disc as a spot light.

Description

technical field [0001] The present invention relates to an optical pickup device equipped with an optical disc device for recording information to and from optical discs such as DVD (Digital Versatile Disc, Digital Versatile Disc), CD (Compact Disc, Compact Disc) Duplicating information, in particular, relates to a technique for miniaturizing and thinning the optical pickup device. Background technique [0002] In recent years, an optical disc device for recording information on an optical disc such as a DVD or a CD as a recording medium and duplicating information from the optical disc has been used in various situations. According to this trend, it is necessary to further reduce the size and thickness of the optical disk device. Due to the size and thickness of the optical pickup device, miniaturization and thinning of the optical disc device for recording information on and reproducing information from the optical disc are necessarily limited. Therefore, it is necessary...

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): G11B7/00G11B7/12G11B7/125G11B7/1263G11B7/135G11B7/1362
CPCG11B7/1362G11B7/1263
Inventor 长岛贤治
Owner FUNAI ELECTRIC CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com