Abstract: A hologram reproduction method for reproducing a hologram from an optical recording medium in which the hologram is recorded by Fourier transforming a signal light, in which digital data is represented by an image of intensity distribution, and a reference light, and simultaneously irradiating the lights in a state in which a direct current component is removed from at least the Fourier transformed signal light onto the optical recording medium is provided. The method including: irradiating a read out reference light onto the optical recording medium, and generating a diffracted light from the recorded hologram; generating all or a part of a direct current component contained in a Fourier transformed image of the signal light; combining the diffracted light and the generated all or a part of the direct current component, and generating a combined beam; and reproducing the signal light by inverse-Fourier transforming the combined beam.

Abstract: A black color material includes a squarylium compound represented by the following formula (1); and a blue color material:

Abstract: The present invention provides a toner including a binder resin and metal particles containing Au, Ag, Cu, Pt, or an alloy thereof having a volume average particle diameter of from about 1 nm to about 300 nm, or an average maximum length of from about 10 nm to about 200 nm. The invention also provides a novel toner including metal particles which absorb light at plasmon frequencies.

Abstract: An optical apparatus includes: a focusing lens that focuses light which is one of recording light being irradiated to an optical recording medium with reference light for recording a hologram and reference light being irradiated to an optical recording medium for reading out a hologram; and a focal position-shifting unit that refracts the light while moving in accordance with a moving speed of the optical recording medium, so as to shift a focal position of the light in the optical recording medium a distance in a thickness direction of the optical recording medium.

Abstract: 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.

Abstract: A display medium includes: a first substrate having transparency and provided with a transparent electrode on one face thereof, a member having a plurality of penetration holes, the member being placed on a surface of the transparent electrode, the penetration holes penetrating the member from the transparent electrode surface side, the ratio of the length of each of the penetration holes to the largest hole diameter being two or more; a second substrate placed so as to face the transparent electrode side of the first substrate; an electrolytic solution containing a metal ion and placed so as to fill a space between the first and second substrates; and a counter electrode placed in a position so as to be insulated from the transparent electrode and in contact with the electrolytic solution.

Abstract: 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.

Abstract: A hologram recording material contains a molecule having intrinsic birefringence and a photoresponsive macromolecule represented by the following formula (1). in formula (1), L1 representing a bivalent linking group, X representing a group having a substituent constant ? based on Hammett's rule of a value of more than 0, the maximum absorption wavelength of an azobenzene group bonding to X being approximately 360 nm or less, A representing a group that is a component of a repeating unit with a carbon number of 2 or more that is a component of a macromolecular main chain, nx representing an integer of 1 or 2, and n representing an integer of 1 or more.

Abstract: A colorant comprising an aggregate of a molecule having a squarylium skeleton and having a maximum absorption wavelength at about 500 nm to about 600 nm in a molecular dispersion state.

Abstract: There is provided a hologram recording method, including generating a signal light which is spatially modulated such that digital data is represented by an image of intensity distribution, irradiating the signal light on an optical recording medium after a Fourier transformation of the signal light such that a zero-order component of the signal light comes into focus at a point removed from the optical recording medium, forming a diffraction grating in the optical recording medium by interference between the zero-order component of the signal light and a high-order component thereof, and recording digital data represented by the signal light as a hologram.

Abstract: An optical recording apparatus comprises: a focusing section that focuses to a transmission type recording medium a recording light beam including a signal light beam and a reference light beam which are radiated from a same direction with a common optical axis; and a focused-position moving section that moves with respect to a direction of the optical axis a focused position where the recording light beam is focused to the transmission type recording medium by the focusing section, wherein an interference fringe formed by the recording light beam is recorded in the transmission type recording medium at each position which is moved by the focused-position moving section.

Abstract: A writing information processing system includes a writing information generating device and an information processing device. The writing information generating device generates writing information relating to a user's writing operation on a medium. The information processing device acquires the writing information from the writing information generating device and stores the writing information. The writing information generating device includes an operation status detector and a visible light generator. The operation status detector detects a current operation status of the writing information generating device. The visible light generator generates visible light representing the detected current operation status of the writing information generating device.

Abstract: The invention provides a toner for electrostatic charge development including a binder resin and an infrared absorber, wherein at least one of the infrared absorbers is a compound represented by Structural Formula (1).

Abstract: A hologram recording method is disclosed in which: signal light includes a plurality of arranged reversal regions in which lightness and darkness of plural pixels of a light and dark image is reversed for an intensity distribution of the light and dark image; the signal light is Fourier-transformed; the Fourier-transformed signal light and reference light are illuminated onto an optical recording medium; and the signal light is recorded as a hologram. Also is disclosed an apparatus capable of implementing the hologram recording method, and an optical recording medium usable with the method.

Abstract: There is provided a hologram recording method including: generating light of a pattern in which a plurality of unit blocks, which include at least one pixel and express luminance, are arrayed, the pattern being sectioned into a region of a signal beam and a region of a reference beam, and being generated such that the region of the reference beam includes a plurality of unit blocks whose numbers of pixels are different; collecting the generated light at a common optical system, and illuminating it onto an optical recording medium; and recording, as a hologram, data which the signal beam expresses.

Abstract: A hologram recording material is used for recording information by at least irradiation with light. The hologram recording material includes photoresponsive molecules, liquid crystal molecules, and particles having an average particle diameter of one tenth or less of a wavelength of light used in the information recording.

Abstract: A hologram recording method for recording information of signal light as holograms in an optical recording medium, which includes illuminating signal light at the optical recording medium; illuminating reference light at the optical recording medium simultaneously with the signal light such that an interference pattern is formed by the signal light and the reference light intersecting in the optical recording medium; and shifting a region in the optical recording medium at which the signal light and the reference light intersect, by shifting an illumination position of the reference light along an optical axis of the signal light, thereby recording a plurality of holograms in the recording medium.

Abstract: In order to obtain a beam splitting prism which a beam can be split with simpler configuration in a state in which an optical path length is precisely controlled, there is provided a beam splitting prism having an incident and an outgoing faces orthogonal or parallel to each other, wherein transparent mediums, at least one beam splitter, and at least one reflector are combined so that the beam splitter and the reflector are located between the transparent mediums, the beam splitter and the reflector are arranged whose normal directions are orthogonal to each other, whereby a beam incident from an incident end face is outputted from an outgoing end face in the form of a plurality of split output beams.

Abstract: An optical recording method includes providing an optical recording medium capable of forming both a refractive index grating and an absorption grating by light irradiation; Fourier transforming with the same lens a signal beam that represents binary digital data with a brightness image and a reference beam such that they are focused at a point outside the optical recording medium; irradiating the Fourier transformed signal beam and reference beam simultaneously onto the optical recording medium and forming a diffraction grating at the optical recording medium according to an interference fringe between the signal beam and the reference beam, or according to an interference fringe within the signal beam itself, and recording the signal beam as a hologram.

Abstract: There is provided a hologram reconstruction method including: onto an optical recording medium in which a hologram is recorded by simultaneously irradiating the Fourier transformed signal beam representing a digital data with a bright and dark image and removing a DC component and the Fourier transformed reference beam thereon, irradiating a first reference beam for reading out that is the same as the reference beam to generate a first diffracted light generated by the recorded hologram, and synthesizing a DC component of a predetermined phase with the generated first diffracted light to generate a first synthesized light; detecting an inverse Fourier transformed image of the first synthesized light to obtain first image data; irradiating a second reference beam for reading out that differs from the reference beam onto the hologram recorded on the optical recording medium to generate a second diffracted light from the recorded hologram, and synthesizing a DC component of a predetermined phase with the generat