摘要:
A method of observing information includes the steps of converting a radiation beam into a visible harmonic beam conforming to the information and observing the information by the harmonic beam. An apparatus for observing information therethrough includes a source for producing a radiation beam conforming to the information, and a converter for converting the radiation beam into a visible harmonic beam, with the information being observed with the aid of the harmonic beam. In addition, a head-up display apparatus includes a source for producing a radiation beam conforming to information to be displayed, a converter for converting the radiation beam into a visible harmonic beam, and a beam combiner for receiving the harmonic beam and directing it in a predetermined direction to effect the display of the information by the harmonic beam.
摘要:
A photosensitive recording medium comprises a composition containing a radical-polymerizable monomer, a cationic-polymerizable monomer, a radical polymerization initiator, and a cationic-polymerization initiator as main constituents. A method of producing a hologram comprises a first step of preparing the photosensitive recording medium; a second step of exposing the medium to an interference pattern of radiation rays; and a third step of exposing the entire region of the medium to light; and optionally a fourth step of heating the entire of the medium.
摘要:
The present invention provides a diffraction device having a high diffraction efficiency with respect to a wide-band radiation beam. A diffraction device comprises a substrate and a diffraction grating formed on the substrate, wherein the diffraction grating is formed so that a full-width of wavelength at half maximum of a diffraction efficiency of a beam diffracted by the diffraction grating is not less than about 8% of a value of a center wavelength of the diffracted beam.
摘要:
A volume phase type hologram has a diffraction lattice recorded in a poly(N-vinyl carbazole) polymer layer where the diffraction lattice is recorded throughout the thickness direction of the polymer layer. A method for preparing the volume phase type hologram has the steps of exposing a photosensitive polymer layer provided on a substrate to an interference pattern; subjecting the polymer layer having been exposed to a first development treatment with a first organic solvent; and peeling the polymer layer off the substrate and subjecting the polymer to a second development treatment with a second organic solvent preferentially from the face that had been in contact with the substrate.
摘要:
A volume phase type hologram film has a diffraction grating recorded in a film composed mainly of poly(N-vinylcarbazole). The poly(N-vinylcarbazole) as the main component has a weight-average molecular weight of not less than 1,000,000 and a molecular weight distribution of not more than 3. In the poly(N-vinylcarbazole), the content of a fraction of poly(N-vinylcarbazole) having a weight-average molecular weight of not more than 200,000 does not exceed 1% by weight.
摘要:
a display apparatus comprises, a display unit, a first diffraction grating for diffracting the light from the display unit, and a second diffraction grating for diffracting the diffracted light from the first diffraction grating, the apparatus being constructed in such a manner that the optical path length between the display unit and the first diffraction grating is shorter than that between the first and second diffraction gratings.
摘要:
A photosensitive recording medium comprises a composition containing a radical-polymerizable monomer, a cationic-polymerizable monomer, a radical polymerization initiator, and a cationic-polymerization initiator as main constituents. A method of producing a hologram comprises a first step of preparing the photosensitive recording medium; a second step of exposing the medium to an interference pattern of radiation rays; and a third step of exposing the entire region of the medium to light; and optionally a fourth step of heating the entire of the medium.
摘要:
A photosensitive material is provided which comprises (i) a substrate comprising a crosslinked polymer having a transmittance of 90% or more in a wavelength region of from 400 to 700 nm and a refractive index of 1.55 or more, and (ii) a sensitive material layer provided on the substrate and mainly composed of a vinylcarbazole polymer. A hologram member employing the photosensitive material is also provided.
摘要:
A hologram member is provided which comprises a substrate, and a film in which a volume type phase hologram is recorded. The film is provided peelably on the substrate. The substrate preferably has a light transmittance of 30% or more at a wavelength of from 450 to 800 nm. The film may comprise a vinylcarbazole.
摘要:
A photosensitive resin composition comprises (a) a polyvinylcarbazole type polymer, (b) a halogen-containing compound and (c) or least one compound selected from the group consisting of a triarylhydrazyl, a triarylcarbonium type coloring matter having at least one carbazolyl group, and a reaction product of a styryl base with a halogenated carbon. A method of preparing a volume type hologram member comprises the steps of: subjecting a photosensitive material having a photosensitive layer comprising the photosensitive resin composition to exposure using a laser beam to form an interference pattern; and subjecting the photosensitive material thus exposed to light to development processing using a solvent.