Sony Corporation

Hisayuki Yamatsu

Seiji Kobayashi

Hiroshige Okamura

Nobuhiro Kihara

Toshiyuki Kashiwagi

Norihiro Tanabe

Motohiro Furuki

Tsutomu Ishimoto

Roderick Koehle

Kimihiro Saito

Minoru Takeda

Kunihiko Hayashi

Shingo Imanishi

Masanobu Yamamoto

Kazuya Hayashibe

Tetsuhiro Sakamoto

Shin Masuhara

Shigeyuki Baba

Yusuke Suzuki

Hiroshi Uchiyama

Yushi Kaneda

Takao Kudo

Megumi Ezura

Tomoki Kanesaka

Selji Kobayashi

An optical information recording reproduction apparatus includes: a first light beam source; a second light beam source emitting a beam with a wavelength shorter than that of the first light beam source; and an object lens condensing the beams from the first and second light beam sources to an optical information recording medium. When information is recorded in the optical information recording medium, a recording beam is emitted from the first light beam source and a beam used to generate a signal for controlling a position of the object lens is emitted from the second light beam source. When the information of the optical information recording medium is reproduced, a reproduction beam is emitted from the second light beam source.

Optical information recording reproduction apparatus and optical information recording reproduction method

An optical information recording method includes emitting light having a wavelength &#x3bb;from a first light source with a pulse width of time twor more and power P, emitting light having a wavelength &#x3bb;from a second light source with a pulse width of time tw, a repetition interval T, and power P, and performing information recording by simultaneously irradiating an identical part of a recording medium with the light from the first light source and the light from the second light source, in which the wavelength &#x3bb;and the wavelength &#x3bb;satisfy &#x3bb;&#x3e;500 nm&#x3e;&#x3bb;and &#x3bb;which is expressed as 1/&#x3bb;+1/&#x3bb;=1/&#x3bb;satisfies a relationship of &#x3bb;&#x3c;300 nm, and emission of the first light source and emission of the second light source satisfy relationships of tw&#x3c;tw, T&#x3c;tw, and P&#x3e;P

Optical information recording method, optical information reproducing method, optical information recording apparatus, and optical information recording and reproducing apparatus

A hologram medium manufacturing method that 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 have a focal point between the first pair of the master hologram media. The method also includes 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.

Hologram medium manufacturing method, master hologram medium manufacturing method, recording medium, and hologram medium manufacturing apparatus

An initialization apparatus that has a simplified configuration and that forms an initial hologram in an information recording medium is provided. An initialization apparatus () rotates an optical disk () and emits blue light beams (Lb) and (Lb) to either side of the optical disk () while causing a red light beam (Lr) to follow a track formed in a reference layer (). Thus, the initialization apparatus () can perform an initialization process in which a linear initial hologram IH is formed in a recording layer () in a spiral pattern that corresponds to the track formed in a reference layer (). Accordingly, the initialization apparatus () can form a planar initial hologram layer (YH) with significantly reduced optical energy or thermal energy emitted to the optical disk () at one time.

Apparatus and method for initializing information recording medium, apparatus and method for recording information, and information recording medium

A bioassay substrate high in integration amount, free in grouping of substances, low in cost, and the like are provided. Specifically, a bioassay substrate includes detection surfaces S on which detection substances can be solidified, the detection surfaces S is provided on a surface of a disk form substrate capable of reading out record information optically, and the detection surfaces S is provided in groove structures (pits) provided in the surface of the substrate radially as viewed on the upper side at predetermined intervals. A bioassay system using the bioassay substrate and a readout system are also provided.

Bio-assay substrate, bio-assay apparatus, and reading apparatus

An optical information recording medium, which is made of a resin provided with photoreactivity containing organometal compound, has a recording layer on which, after a photoreaction are brought about when predetermined initialization light is irradiated to the medium and then the resin is hardened, at a time of recording information, a recording mark is formed when predetermined recording light is condensed to the medium, and a temperature of the medium near a focal point of the recording light is increased and the organometal compound is transubstantiated, and at a time of reproducing information, the information is reproduced based on returned light according to predetermined reading light being irradiated.

Optical information recording medium

An optical information recording and reproducing deviceirradiates initialization light Lto an optical information recording mediumhaving a recording layermade of photopolymerization-type photopolymer in advance to bring about the photopolymerization or the photocrosslinking to perform the initialization processing, and condenses a recording light beam Lhaving a comparatively strong light intensity to a target position in the recording layerand increases the temperature thereof to transubstantiate the target position to record a recording mark RM at the time of recording information, and condenses a reading light beam Lhaving a comparatively weak light intensity to the target position and receives a returned light beam Lhaving a sufficient light amount reflected by the recording mark RM at the time of reproducing information, which makes it possible to reliably record the recording mark RM and stably read out the recording mark RM.

Method of recording in an optical information recording medium

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.

Optical information recording/reproducing device and associated method for increasing recording/reproducing speed

A hologram reconstructing apparatus is disclosed. The apparatus includes: unnecessary light removing means for causing the imaging means to receive necessary light only included in the reconstruction light; driving means for operating the hologram recording medium or a reconstruction light optical system; light detecting means for detecting the state that reconstruction light is projected to the unnecessary light removing means of the light cut by the unnecessary light removing means; and control means for obtaining the displacement of the hologram recording medium based on the information on a specific part of the projection state information detected by the light detecting means and controlling the driving means to cancel the displacement and move the hologram recording medium or the optical system.

Hologram reconstructing apparatus and hologram reconstructing method

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.

Hologram recording and reproduction apparatus

To provide a bioassay system or the like, which can solve the problem of allocating spaces above detecting sections and can also stabilize servo-controlled operation of a disk-shaped plate. Provided is a bioassay system (U) or the like, which is equipped with at least means for immobilizing a nucleotide chain, a peptide, a protein, a lipid, a low molecular-weight compound, a liposome or any other biological substance as a detection substance (D) in a detecting section (), dropping a target-substance containing solution (S) onto the immobilized detection substance (D), and causing the detection substance (D) and the target substance (T) to interact with each other to prepare a reaction product (R); and means for condensing fluorescence (F), which has been emitted from the fluorescence-labeled substance (D) by irradiating excitation light (P) of a specific wavelength onto the reaction product (R), by a lens () arranged on a side of a back surface () of the reaction section () to determine an intensity of the fluorescence (F).

Bioassay unit and substrate for bioassay

A hologram reconstructing apparatus configured to irradiate a hologram recording medium that stores an interference pattern of a signal beam spatially modulated by data displayed on a spatial modulator and a reference beam emitted simultaneously with the signal beam with a reconstructing reference beam and to reconstruct data by capturing a reconstruction signal beam generated at the hologram recording medium being irradiated includes an image pickup unit that receives a partial reconstruction signal beam that constitutes part of the reconstruction signal beam by a full light-receiving plane; and a moving unit that relatively move the light-receiving surface of the image pickup means within an irradiation range of the reconstruction signal beam. All information included in the reconstruction signal beam is reconstructed by receiving the reconstruction signal beam corresponding to the entire irradiation range by relatively moving the image pickup means within the irradiation range of the reconstruction signal beam.

A hologram recording device for recording interference fringes between reference light and signal light modulated by data displayed in a spatial modulator in a hologram recording material, the hologram recording device including a phase mask for diffusing light, the phase mask being disposed in an optical system that the signal light passes, wherein a minimum unit of a light diffusing pattern formed in the phase mask is a natural number of times a minimum unit of display data of the spatial modulator.

Hologram recording device and phase mask having a diffusing pattern with a minimum unit in relation to a minimum unit of a spatial modulator

The present invention is applicable to a recording apparatus of a CD or DVD, a recording method thereof and a recording medium, and an object of the present invention is to clearly record a second information such as characters and figures between two recording levels in an optical disk. The second information is recorded in a predetermined area in a radius direction and a angular direction on the optical information recording medium, and further, the second information is recorded according to a change of a pit width based on a change of power of the laser beam, a change of a pit length based on an on/off control of the laser beam, or a change of depression or bulge of the pit based on a change in the vicinity of the on/off control of the laser beam. Whereby it is possible to record the second information such as a watermark pattern or a visible image, which is capable of being confirmed by seeing a disk.

Optical information recording apparatus

The present invention provides a hologram apparatus for recording an interference fringe of a signal beam and a reference beam having a speckle pattern in a recording area of a hologram recording material. The hologram apparatus includes a speckle pattern generating unit for generating the speckle pattern so that the speckle pattern is different in form in the track direction and the cross-track direction of the recording area. With this configuration, it is possible to perform recording under an increased tolerance in the cross-track direction while securing the shift selectivity necessary in the track direction, and, hence, to easily and stably perform the tracking servo at the time of reproduction.

Growing community of inventors

Tokyo, Japan

Hisayuki Yamatsu