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Optical information recording apparatus and method optical information reproducing apparatus and method, optical information recording/reproducting apparatus and method

A recording and reproducing device and information recording technology, which is applied in the field of optical information recording devices, optical information reproducing devices, optical information recording and reproducing devices and optical information recording media, and can solve the problems of low accuracy and clutter of information reproduction

Inactive Publication Date: 2005-06-15
OPTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, there is a problem that the light used for position determination will be disturbed by the information recording layer, and the reproduction accuracy of the information used for position determination will be low.

Method used

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  • Optical information recording apparatus and method optical information reproducing apparatus and method, optical information recording/reproducting apparatus and method
  • Optical information recording apparatus and method optical information reproducing apparatus and method, optical information recording/reproducting apparatus and method
  • Optical information recording apparatus and method optical information reproducing apparatus and method, optical information recording/reproducting apparatus and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0116] figure 1 It is an explanatory diagram showing main parts of the recording and reproducing optical system in the optical information recording and reproducing apparatus according to Embodiment 1 of the present invention. The optical information recording and reproducing device according to this embodiment includes the optical information recording device and the optical information reproducing device according to this embodiment. The recording and reproducing optical system in this embodiment includes a recording optical system in an optical information recording device and a reproducing optical system in an optical information reproducing device.

[0117] First, refer to figure 1 , the structure of the optical information recording medium according to this embodiment will be described. The optical information recording medium 1 according to this embodiment includes two disc-shaped transparent substrates 2 and 4 formed of polycarbonate or the like, and an information r...

Embodiment approach 2

[0225] Next, an optical information recording and reproducing apparatus and method according to Embodiment 2 of the present invention will be described. FIG. 19 is an explanatory diagram showing an overall configuration of a recording and reproducing optical system in the optical information recording and reproducing apparatus according to the present embodiment. The optical information recording and reproducing device according to this embodiment includes the optical information recording device and the optical information reproducing device according to this embodiment. The recording and reproducing optical system in this embodiment includes a recording optical system in an optical information recording device and a reproducing optical system in an optical information reproducing device.

[0226] In this embodiment, information light is generated by spatially modulating the phase of light based on recording information. In the recording and reproducing optical system in thi...

Embodiment approach 3

[0268] Next, an optical information recording and reproducing apparatus and method according to Embodiment 3 of the present invention will be described. The optical information recording and reproducing device according to this embodiment includes the optical information recording device and the optical information reproducing device according to this embodiment. The recording and reproducing optical system in this embodiment includes a recording optical system in an optical information recording device and a reproducing optical system in an optical information reproducing device.

[0269] In the present embodiment, information light is generated by spatially modulating and reflecting the recording reference light having passed through the information recording layer 3 of the optical information recording medium 1 based on recorded information.

[0270] Figure 26 It is an explanatory diagram showing a recording and reproducing optical system in the optical information record...

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Abstract

The light is spatially modulated by a spatial light modulator (27) corresponding to the recorded information to generate information light. The information light is condensed by the objective lens (21), converges on the interface between the transparent substrate (2) and the protective layer (5), and irradiates the optical information recording medium (1) while converging into the minimum optical path. The reference light for recording is condensed by the objective lens (31), and irradiates the optical information recording medium (1) while converging on the interface between the transparent substrate (2) and the protective layer (5) to become the minimum optical path. An interference pattern formed by interference between the information light and the recording reference light is recorded in the information recording layer (3) in a three-dimensional form. Accordingly, the configuration of the optical system for recording or reproduction can be simplified without reducing the amount of information.

Description

technical field [0001] The present invention relates to an optical information recording device and method for recording information in an optical information recording medium by using holography, and an optical information reproduction device and method for reproducing information from an optical information recording medium by using holography. An optical information recording and reproducing device and method for reproducing information from an optical information recording medium while recording information on an information recording medium, and an optical information recording medium for recording information using holography. Background technique [0002] Holographic recording, which uses holography to record information on a recording medium, is generally performed by superimposing light having image information and reference light inside the recording medium, and writing the interference pattern that appears at this time into the recording medium. When the recorded ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/16G03H1/30G11B7/0065G11B7/007G11B7/085G11B7/09G11B7/125G11B7/128G11B7/13G11B7/131G11B7/135G11B7/24
CPCG03H1/0402G03H1/0465G03H1/16G03H1/30G03H2001/0415G11B7/0065G11B7/007G11B7/00745G11B7/00781G11B7/08505G11B7/08594G11B7/0908G11B7/128G11B7/131G11B7/24044G11B7/2405
Inventor 堀米秀嘉
Owner OPTWARE