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Optical read/write head

A technology of optical read-write head and optical compensation, applied in the field of optical read-write head, can solve the problems of general products without structure and inconvenience

Inactive Publication Date: 2009-03-04
PRODISC TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This shows that the above-mentioned existing optical read-write head obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.
In order to solve the problems existing in the optical read-write head, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above-mentioned problems. Obviously, it is a problem that relevant industry players are eager to solve.

Method used

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Embodiment Construction

[0047] For further elaborating the technical means and effects that the present invention adopts for reaching the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of the optical read-write head proposed according to the present invention , as detailed below.

[0048] Through the description of the specific implementation mode, when the technical means and functions adopted by the present invention to achieve the predetermined purpose can be obtained a deeper and more specific understanding, but the accompanying drawings are only for reference and description, and are not used to explain the present invention be restricted.

[0049] see figure 2 As shown, a kind of optical read-write head 2 of the first embodiment of the present invention comprises a light source 21, a collimating lens 22, a polarization beam splitter 23, an optical compensation elemen...

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Abstract

A optical read / write head is prepared as using light source to emit a light beam and collimating light beam by collimation lens, separating light beam by polarization spectroscope according to polarized direction, focusing light beam to be on a focusing point by focusing lens, setting optical compensation element between said focusing point and polarization spectroscope, setting spherical image error reviser between focusing point and focusing lens and using optical detector to detect light beam transmitted from polarization spectroscope.

Description

technical field [0001] The invention relates to an optical read-write head, in particular to an optical read-write head applicable to multiple recording layers and different types of optical information storage media. Background technique [0002] With the advent of the information and multimedia era, consumers' demand for storage media capacity has increased dramatically. Among them, because the optical information storage medium can store a large amount of data, and has the characteristics of portability and long-term preservation of data, it is quite popular to use the optical information storage medium to access data. [0003] Facing the ever-increasing amount of audio-visual information, increasing the data capacity of optical information storage media has always been the goal pursued by the industry. To store more data on the same volume of optical information storage media, there are two commonly used methods: the first method is to reduce the laser spot (Laser Beam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/125G11B7/135G11B7/1372G11B7/1392
Inventor 谢国卿
Owner PRODISC TECH INC