| Patent application number | Description | Published |
|---|
| 20080205257 | OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording and reproducing device | 08-28-2008 |
| 20090003153 | OPTICAL INFORMATION RECORDING DEVICE, OPTICAL INFORMATION RECORDING METHOD, OPTICAL INFORMATION REPRODUCTION DEVICE AND OPTICAL INFORMATION REPRODUCTION METHOD - An optical information recording device includes: a section that acquires recording information that should be recorded on an optical information recording medium on which information are recorded by forming a recording mark at a position where an optical beam is focused on and from which the information are reproduced based on the reflectance of the recording mark; a section including at least one or more one-surface beam emission sections that emit a recording beam according to part of the recording information to one surface of the recording medium and focus the beam on a target position to form the recording mark; and an section including at least one or more other-surface beam emission sections that emit an recording beam according to the rest of the recording information to the other surface of the recording medium and focus the beam on a target position to form the recording mark. | 01-01-2009 |
| 20090009835 | Hologram Reproducer and Hologram Reproducing Method - When a hologram recording material is changed in volume and refractive index during hologram recording, if one sheet of non-defective reconstructed images cannot be obtained even if conditions are changed so as to conform with Bragg's law most closely by changing the angle or position of a reference beam, a hologram reconstructing apparatus and a hologram reconstructing method are provided, in that a plurality of sheets of partially non-defective and favorable reconstructed images ( | 01-08-2009 |
| 20090046560 | Hologram recording and reproduction apparatus - A hologram recording and reproduction apparatus is disclosed which can raise the degree of freedom in design to achieve miniaturization thereof and can raise the hologram recording density of the shift multiplexing type. Upon recording, recording light specially optically modulated by a spatial optical modulator and reference light having a wave front disturbed at random by a randomizing phase mask are coupled so as to have a common optical axis and introduced to a recording area of a hologram recording medium. As a result, the number of lenses to be moved so as to follow up the variation of the position of a recording area or a reproduction area can be reduced. Further, the random disturbance of the wave front of the reference light makes the shift selectivity sharp in both of the along-track direction and the cross-track direction. | 02-19-2009 |
| 20090147333 | HOLOGRAM MEDIUM MANUFACTURING METHOD, MASTER HOLOGRAM MEDIUM MANUFACTURING METHOD, RECORDING MEDIUM, AND HOLOGRAM MEDIUM MANUFACTURING APPARATUS - A hologram medium manufacturing method is disclosed. The hologram medium manufacturing method includes: disposing a first pair of master hologram media with a predetermined interval so that the first pair of the master hologram media face each other; forming a master hologram in the master hologram media by irradiating the first pair of the master hologram media with spherical wave light and reference light so that the spherical wave light and the reference light interfere with each other in the master hologram media, the spherical wave light and the reference light having a focal point between the first pair of the master hologram media; disposing a hologram medium between the first pair of the master hologram media; and forming a hologram in the hologram medium by irradiating the first pair of the master hologram media with the reference light. | 06-11-2009 |
| 20090252018 | HOLOGRAM LENS MANUFACTURING APPARATUS, HOLOGRAM LENS, METHOD OF MANUFACTURING HOLOGRAM LENS, INFORMATION RECORDING APPARATUS, AND INFORMATION REPRODUCING APPARATUS - A hologram lens manufacturing apparatus includes: a separation unit that separates a light beam emitted from a light source into a reference light beam and an irradiation light beam; an irradiation light irradiating unit that collects the irradiation light beam so as to have a focal point at a predetermined focal position, and irradiates a hologram recording element located on the way to the focal point with the irradiation light beam; and a reference light irradiating unit that irradiates the hologram recording element with the reference light beam under a predetermined irradiation condition to record an interference pattern occurring between the irradiation light beam and the reference light beam as a hologram. | 10-08-2009 |
| 20100047506 | OPTICAL INFORMATION RECORDING MEDIUM - The present invention can record or reproduce information in a stable manner with a simple configuration. According to the present invention, since a photoinitiator whose vaporization temperature is between 140 and 400 deg C. is included, a portion around a focal point Fb of a recording optical beam L | 02-25-2010 |
| 20100172228 | VOLUMINAL INFORMATION RECORDING MEDIUM, INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING APPARATUS , AND OPTICAL PICKUP - The present invention makes it possible to use an optical pickup in common with conventional optical disks. In a three-dimensional mark recording layer ( | 07-08-2010 |
| 20100296374 | APPARATUS AND METHOD FOR INITIALIZING INFORMATION RECORDING MEDIUM, APPARATUS AND METHOD FOR RECORDING INFORMATION, AND INFORMATION RECORDING MEDIUM - An initialization apparatus that has a simplified configuration and that forms an initial hologram in an information recording medium is provided. An initialization apparatus ( | 11-25-2010 |
