HOLOGRAM RECORDING FILM AND METHOD OF MANUFACTURING SAME, AND IMAGE DISPLAY APPARATUS

• Main Authors: YOSHIDA TAKUJI, AKUTSU KATSUYUKI, KUWABARA MIEKO
• Format: Patent
• Language: English
• Published: 24.06.2010
• Subjects: CINEMATOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHIC PROCESSES OR APPARATUS; HOLOGRAPHY; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHOTOGRAPHY; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To produce a hologram recording film, in which a diffraction grating layer having interference fringes different in slant angle is multilayered, by a simple method. SOLUTION: The hologram recording film manufacturing method includes: a step (A) of obtaining a laminated structure 13 by alternately laminating M (where M≥2) photosensitive material precursor layers 11A, 11B and at least one (M-1) resin layer 12A on one another; a step (B) of obtaining M photosensitive material layers 21A, 22A, 21B, where at least two interference fringes with a desired pitch and a desired slant angle are formed on each of the M photosensitive material layers, from the M photosensitive material precursor layers by irradiating the laminated structure 13 with a reference laser light beam and an object laser light beam; and a step (C) of making the slant angles of the M photosensitive material layers 21A, 21B different from each other while retaining the pitch value, which is defined on a face of the photosensitive material layer, by irradiating the laminated structure 23 with an energy ray from the one face side of the laminated structure 23, and heating the laminated structure. COPYRIGHT: (C)2010,JPO&INPIT