Patent application number | Description | Published |
20080199782 | Hologram recording material, hologram recording medium and hologram recording method - A hologram recording material contains a molecule having intrinsic birefringence and a photoresponsive macromolecule represented by the following formula (1). | 08-21-2008 |
20080267038 | OPTICAL DEVICE FOR HOLOGRAPHIC RECORDING OR READING AND METHOD FOR CONTROLLING THE SAME - An optical device for holographic recording or reading is provided and includes: a light emission unit that emits light to be irradiated on an optical recording medium, the light being recording or reading light; a first prism unit that moves in accordance with a moving speed of the optical recording medium and refracts the light to move the light irradiated on the optical recording medium over a distance in a moving direction of the optical recording medium so that the light is irradiated on substantially the same position on the optical recording medium for a period of time; and a second prism unit that moves in accordance with the moving speed of the first prism unit to compensate for an optical path length of the light. | 10-30-2008 |
20090003180 | HOLOGRAPHIC RECORDING APPARATUS, HOLOGRAPHIC REPRODUCING APPARATUS, HOLOGRAPHIC RECORDING METHOD AND HOLOGRAPHIC REPRODUCING METHOD - A holographic recording apparatus is provided and includes: a signal light generation section that generates signal light modulated according to digital data; a reference light generation section that generates reference light modulated by means of a pixel pitch; a adding section that adds, in proximity to a light-convergence position where the signal light and the reference light come close to each other or overlap each other, a low-order component of the signal light obtained by Fourier transform and a high-order component of the reference light obtained by Fourier transform, the high-order component of the reference light having a spatial frequency region differing from that of the low-order component of the signal light; and an illumination optical system that irradiate an optical recording medium with the added signal and reference light. | 01-01-2009 |
20090197185 | DOCUMENT RECORDING METHOD AND APPARATUS - A document recording method for recording a document on a microfilm, the document including a series of pages, a format of which is specified so as to include at least a page representing commencement, a page representing an original, and a page representing conclusion. The method includes recording all or a portion of the series of pages on the microfilm in a hologram format that is obtained by interference between object light and reference light. | 08-06-2009 |
20090238060 | OPTICAL REPRODUCING DEVICE AND OPTICAL REPRODUCING METHOD - There is provided an optical reproducing device including: a reproducing component that includes a light source, a spatial light modulator, and a light guiding component, with the reproducing component irradiating, with reference light that has been generated by the spatial light modulator as reading light, a Fourier transform hologram; a splitting component disposed on a signal light exiting side of the reproducing component and that splits, into two light waves, the signal light; a first image acquiring component that detects the one split light wave to acquire a first reproduced image; a second image acquiring component that detects light where a direct current component has been removed from the other split light wave to acquire a second reproduced image; and a decoding component that uses the first reproduced image and the second reproduced image to decode data that the signal light has. | 09-24-2009 |
20090251750 | OPTICAL REPRODUCING METHOD AND OPTICAL REPRODUCING APPARATUS - An optical reproducing method is provided. A diffracted light is generated by irradiating a reference light onto a hologram. A combined light is generated by applying a direct-current component formed by a polarized light having a third polarization component with a first polarization plane having a polarization direction orthogonal to the diffracted light and having the same phase as the diffracted light, and a fourth polarization component with a second polarization plane having an opposite phase to the diffracted light, onto the diffracted light. The combined light is separated into a fifth polarization component including a first polarization component and the third polarization component, and a sixth polarization component including a second polarization component and the fourth polarization component. A first reproduced image is reproduced from the separated fifth polarization component, and a second reproduced image is reproduced from the separated sixth polarization component. | 10-08-2009 |
20100069727 | MEASURING APPARATUS - Provided is a measuring apparatus including: a driving unit that outputs first and second driving signals each having an opposite phase; a first semiconductor laser device, driven by the first driving signal, that emits a first laser beam to an object to be measured; a second semiconductor laser device, disposed near the first device and driven by the second driving signal, that emits a second laser beam to the object; a first detection unit that detects a first electrical signal that corresponds to the intensity of the first laser beam modulated due to the self-coupling effect; a second detection unit that detects a second electrical signal that corresponds to the intensity of the second laser beam modulated due to the self-coupling effect; a calculation unit that calculates differences between the first and second electrical signals; and a measuring unit that measures a state change of the object from the difference. | 03-18-2010 |
20100069766 | MEASURING APPARATUS - Provided is a measuring apparatus that includes: a semiconductor laser device that emits a laser light beam to an object to be measured; a driving unit that provides a driving signal for modulation drive of the semiconductor laser device; a first detection unit that detects a first electrical signal that corresponds to the intensity of the laser light beam modulated due to the self-coupling effect, in a first half-cycle of the driving signal; a second detection unit that detects a second electrical signal that corresponds to the intensity of a second laser light beam modulated due to the self-coupling effect, in a second half-cycle of the driving signal being in an opposite phase of the first half-cycle; a calculation unit that calculates a difference between the first and second electrical signals; and a measuring unit that measures a change in the state of the object based on the calculated difference. | 03-18-2010 |
20100238531 | LIGHT-COLLECTING DEVICE, LIGHT-COLLECTING DEVICE ARRAY, EXPOSURE DEVICE AND IMAGE-FORMING APPARATUS - A light-collecting device is provided, a light-collecting device, including: a first volume hologram recorded in a hologram recording layer by interference of a first spherical wave and a planar wave, the first spherical wave passing through a light path of diffused light which radiates from a light incident point, passes through the hologram recording layer and spreads to a predetermined diameter; and a second volume hologram recorded in the hologram recording layer by interference of a second spherical wave and the planar wave, the second spherical wave passing through a light path of converging light which radiates from the same side as the first spherical wave, passes through the hologram recording layer and converges at an image-forming point distanced from the hologram recording layer by a predetermined distance, the planar wave intersecting with the first spherical wave and the second spherical wave. | 09-23-2010 |
20100259592 | EXPOSURE DEVICE AND IMAGE FORMING APPARATUS - There is provided an exposure device including: a light-emitting element array having an elongated support and plural light-emitting elements, the light-emitting elements being arranged in at least one row along a length direction of the support such that a spacing between two adjacent light-emitting elements is a pre-specified first spacing; and a hologram element array having a hologram recording layer disposed on the support and plural hologram elements formed, the plural hologram elements corresponding with each of the light-emitting elements and being formed such that a spacing along the support length direction between two adjacent hologram elements is the first spacing, and a diameter in the support length direction of each of the plural hologram elements being larger than the first spacing, such that a respective light emitted from each of the light-emitting elements is diffracted and focused toward a pre-specified image-forming plane by the corresponding hologram element. | 10-14-2010 |
20100259739 | EXPOSURE DEVICE AND IMAGE FORMING DEVICE - There is provided an exposure device including: a light-emitting element array at which a plurality of light-emitting elements, that emit light that passes through an optical path of diffused light, are arrayed one-dimensionally or two-dimensionally on a substrate; and a hologram element array at which a plurality of hologram elements are formed at positions, that respectively correspond to the plurality of light-emitting elements, of a hologram recording layer disposed on the substrate, so as to diffract and collect, at an outer side of illumination regions of all of the plurality of light-emitting elements, respective lights that are emitted from the plurality of light-emitting elements respectively. | 10-14-2010 |
20110013156 | EXPOSURE APPARATUS, IMAGE FORMING APPARATUS, AND HOLOGRAM RECORDING APPARATUS - An exposure apparatus according to an exemplary embodiment of the invention includes a substrate in which plural light-emitting devices are arrayed one-dimensionally or two-dimensionally; and a hologram recording layer that is disposed on the substrate, plural holograms being recorded in the hologram recording layer by holographic interference between a first beam and a second beam such that a predetermined number of beam spots are disposed in the hologram recording layer in a predetermined array direction according to a portion of light-emitting devices, the portion of light-emitting devices being selected as emitters from the plural light-emitting devices, the beam spot being formed by a light beam of the second beam, the first beam passing through an optical path of diffusion light that passes through the emitter, the second beam passing through an optical path of convergent light that converges at a predetermined distance outside the optical path of the first beam. | 01-20-2011 |
20110199662 | FOCUSING ELEMENT, FOCUSING ELEMENT ARRAY, EXPOSURE DEVICE AND IMAGE FORMING DEVICE - There is provided a focusing element including: a light-generating element that generates light in a pre-specified wavelength range and emits diffuse light; and a hologram element in a recording layer disposed at a light emission side of the light-generating element, the hologram element being recorded by wavelength multiplexing with light of plural wavelengths selected from the wavelength range of the light-generating element, and the hologram element being illuminated with the diffuse light from the light-generating element and emitting diffracted light that converses at a pre-specified focusing point. | 08-18-2011 |