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Hologram recording apparatus, hologram recording medium and hologram recording method

A recording medium and recording device technology, applied in the properties/attributes of holograms, optical recording/reproducing/erasing methods, recording information storage, etc., can solve the problems of poor recording/reproducing characteristics and influence, and achieve good diffraction The effect of efficiency

Inactive Publication Date: 2010-03-17
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Then, the diffraction grating on the photopolymer may be rotated and / or the interval between the diffraction gratings and the refractive index may be changed, which adversely affects the recording / reproducing characteristics

Method used

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  • Hologram recording apparatus, hologram recording medium and hologram recording method
  • Hologram recording apparatus, hologram recording medium and hologram recording method
  • Hologram recording apparatus, hologram recording medium and hologram recording method

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Embodiment Construction

[0035] Embodiments of the present invention will be described below. Embodiments of the present invention are characterized by the part of the apparatus related to recording and the part of the method related to recording. Since an understanding of how to record a hologram and how to reproduce a hologram is assumed in the description of the embodiment, a coaxial optical system will first be described as an example regarding an optical section serving as a main part of a hologram recording / reproducing apparatus, and will A coaxial hologram recording / reproducing apparatus having a coaxial optical system will be briefly described. Thus, characteristics of the embodiment will be described.

[0036] (Hologram recording / reproducing device using coaxial optical system)

[0037] In a hologram recording / reproducing device using a coaxial optical system (referred to as a coaxial hologram recording / reproducing device), since it is possible to share a part of the optical path of a beam ...

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Abstract

A hologram recording apparatus that records a hologram on a recording layer of a hologram recording medium by causing interference between signal light modulated in accordance with record data and reference light from the same light source as that of the signal light is provided. The apparatus includes: a signal light spatial light modulating section that displays a signal light pattern for causing the signal light; a reference light spatial light modulating section that displays a reference light pattern for causing the reference light; a control section that controls the form of the signal light pattern to be displayed on the signal light spatial light modulating section and the form of the reference light pattern to be displayed on the reference light spatial light modulating section and controls optical energy of the signal light and reference light; and a temperature sensor that senses the temperature of the hologram recording medium.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP 2006-277902 filed in the Japan Patent Office on Oct. 11, 2006, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a hologram recording device, a hologram recording medium and a hologram recording method. Background technique [0004] In recent years, attention has been drawn to a holographic memory, which is a recording / reproducing device that can achieve a high recording density and record / reproduce recorded data at a high transfer speed. In the holographic memory, the thickness direction of the recording medium is also used. In the recording operation, two-dimensional information is processed in one page unit, and interference fringes of reference light and signal light are formed in the form of a hologram (diffraction grating) based on the page data accordin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/04G03H1/12G03F7/004
CPCG03H2240/52G11B7/00736G11B7/0065G03H1/0465G11B7/1263
Inventor 外石满
Owner SONY CORP
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