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Optical information recording method and optical information recording medium

A technology for recording media and recording methods, applied in optical recording/reproduction/erasing methods, optical recording heads, optical re-recording, etc., can solve the problems of increasing the number of times of information light and reference light irradiation, increasing recording density, and taking time , achieve the effect of shortening the copying time and improving productivity

Inactive Publication Date: 2006-11-29
OPTWARE
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Problems solved by technology

[0014] Since information can be recorded superimposed on the optical recording medium using the multiplex recording method, the recording density can be significantly increased, but this part also increases the number of times of irradiation of information light and reference light, and the above-mentioned laser beam adjustment operation takes time and is difficult. mass production

Method used

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  • Optical information recording method and optical information recording medium
  • Optical information recording method and optical information recording medium
  • Optical information recording method and optical information recording medium

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Embodiment Construction

[0071] Below, refer to Figure 1~Figure 11 The embodiment of the present invention is explained.

[0072] figure 1 An embodiment of the optical information recording method and optical information recording medium of the present invention is shown.

[0073] This embodiment uses a recording method in which the information light and the recording reference light are coaxially arranged. Such as figure 1 As shown in (a) and (b), in this embodiment, at least a part of the light beam emitted from the light source (not shown) is field modulated by the field modulation mechanism 1 by a known method to divide the information light carrying information 2 and reference light 3 for recording. In this embodiment, the information light 2 is located at the center, and the recording reference light 3 is arranged coaxially with the optical axis L on its outer periphery. An objective lens 5 is arranged between the field modulation mechanism 1 and a known light-transmitting optical information re...

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Abstract

Provided is an optical information recording method and an optical information recording medium, which can achieve easy duplication in holographic recording. The optical information recording method is for recording information to an optical information recording medium 4 which includes an information recording layer to which information is recorded using holography. In the method, virtual information light 6 composed of information light 2 to which information is added by spatially modulating at least a part of light ray flux emitted from a light source and of recording-specific reference light 3 is generated, and virtual information light 6 and virtual recording-specific reference light 8 are irradiated onto the information recording layer so that information is recorded thereto by interference pattern generated by interference between virtual information light 6 and virtual recording-specific reference light 8.

Description

Technical field [0001] The present invention relates to an optical information recording method for irradiating information carrying information light and recording reference light to an optical recording medium through field modulation to cause interference in the information recording layer of the optical recording medium, and recording information through the interference pattern And optical information recording medium. Background technique [0002] Holographic recording using holographic technology to record information on a recording medium is generally performed by superimposing information light and reference light carrying image information inside the recording medium, and writing the interference fringe pattern generated at this time into the recording medium. When reproducing the recorded information, by irradiating the recording medium with reference light, the image information is reproduced by the diffraction of the interference fringe pattern. [0003] In recent ye...

Claims

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Application Information

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IPC IPC(8): G11B7/0065G11B7/135G11B7/28G03H1/04
Inventor 堀米秀嘉
Owner OPTWARE
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