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| Number | Title | Issue Date |
| 7339735 | Polarization recovery system for projection displays A waveguide polarization recovery system both polarizes the input light energy for use with an LCD imager and converts the polarity of unusable light energy to add to the illumination of the LCD imager. The compact polarization recovery waveguide system generally in... | 03/04/2008 |
| 7324283 | Optical filter and optical instrument In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t... | 01/29/2008 |
| 7321467 | Anti-reflection coating layer and design method thereof An anti-reflection coating layer is formed between an under layer and a photoresist layer. The anti-reflection coating is characterized in a refraction value (n) of the anti-reflection coating layer, wherein n is a constant, and an extinction coefficient (k) of the ... | 01/22/2008 |
| 7319551 | Maskless optical interferometric lithography An optical device generated by interferometric lithography, in the form of a surface relief pattern that diffracts light, to be used mainly in optical security, produced by optical systems compliant with the Schimpflug and hinge Rules containing: two identical lense... | 01/15/2008 |
| RE39979 | Color wheel including light deflecting means A color wheel includes lens structures, which are formed on a surface of a substrate opposite to a surface having filter sectors, and which have curved surfaces formed at their abutting ends and positioned along a boundary between adjacent filter sectors. Light impi... | 01/01/2008 |
| 7315408 | Video hologram and device for reconstructing video holograms for large objects A video holographic display device operates so that the size of a reconstructed three dimensional scene is a function of the size of the hologram-bearing medium; the reconstructed three dimensional scene can then be anywhere within a volume defined by the hologram-b... | 01/01/2008 |
| 7312925 | Optical filter and optical instrument In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t... | 12/25/2007 |
| 7312908 | 3D image display and 3D image display method A small, inexpensive three-dimensional image display having a structure for displaying a color three-dimensional image sharply even if a low-resolution spatial optical modulating element is used. The three-dimensional image display has an illumination light source u... | 12/25/2007 |
| 7307804 | Thermally stabile GRISMs Thermally stable GRISMs comprise a substrate and cover plate composed of a first material keeps the spatial frequency of the grating stable with temperature, and a prism composed of a second material having lower thermal coefficient of refractive index than that of ... | 12/11/2007 |
| 7304774 | Holographic recording medium A holographic recording medium 10 includes: a recording layer 12; two substrates 14 and 16 sandwiching the same; and a photosensitive protective layer 18 covering these recording layer 12 and substrates 14 and 16 | 12/04/2007 |
| 7304789 | Microscope system and objective unit A microscope system includes a light source and an objective unit. The objective unit includes an objective optical system, including a small-diameter distal optical system arranged at an end brought near to or into contact with a specimen, for focusing light from t... | 12/04/2007 |
| 7298534 | Off-axis holographic light concentrator and method of use thereof A light receiving apparatus comprises a holographic optical device having a plurality of holograms recorded in a light receiving surface thereof. The holographic optical device is configured to diffract light of a predetermined wavelength incident thereon from diffe... | 11/20/2007 |
| 7298536 | Fiber optic wafer probe A fiber optic wafer probe that includes a fibre optic cable for approaching a device under test. ... | 11/20/2007 |
| 7295731 | Microstructuring optical wave guide devices with femtosecond optical pulses The present invention is directed to the creation of optical waveguiding devices from standard optical fibers by the creation of zones of permanently altered refractive index characteristics therein. A high intensity femtosecond laser beam is focused at a predetermi... | 11/13/2007 |
| 7295392 | Color wheel with aligned segments A color wheel for use in projector systems comprises a disc shaped hub, rotatable around a central axis and color filter segments arranged radially to said central axis and affixed to said hub. This color ring is arranged concentrically with respect to said axis and... | 11/13/2007 |
| 7295391 | ND filter for aperture device and aperture device comprising ND filter This invention decreases deformation of a plastic substrate caused by thermal expansion and contraction in an evaporation process of forming a multi-layered film of an ND filter, thus helping prevent wrinkles. The plastic substrate serving as the base of the ND filt... | 11/13/2007 |
| 7289254 | Optometry measurement device The present invention features a method and device for measuring characteristics of the human eye, particularly spherical refractive error. The device comprises a recorded hologram of an array of elements each bearing an identifying indicia. When the reconstructed h... | 10/30/2007 |
| 7289268 | Optical filter and optical instrument In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t... | 10/30/2007 |
| 7289253 | System and methods for shearless hologram acquisition Systems and methods for shearless digital hologram acquisition, including an apparatus incorporating an illumination source configured to produce a first beam of light, which is then split by a beamsplitter into a reference beam and an object illumination beam. The ... | 10/30/2007 |
| 7286272 | Image display unit The present invention relates to an image display device in which a virtual image of an image display element is formed to display an image. The image display device includes a transmission type diffraction optical element (50) for diffracting exit lights fro... | 10/23/2007 |
| 7283286 | Hologram recording/reproducing device and optical unit A hologram recording/reproducing device includes a laser light source emitting laser light; a spatial light modulator generating signal light and reference light from the laser light emitted from the laser light source, the signal light and the reference light trave... | 10/16/2007 |
| 7277210 | Measuring spectral lines from an analyte using multiplexed holograms and polarization manipulation An optical apparatus in which multiplexed holograms are used to achieve wavelength selectivity and polarization manipulation is used to facilitate near-normal incidence of light on the holograms. The polarization manipulation allows light reflected from the hologram... | 10/02/2007 |
| 7277211 | Hologram recording and reproduction apparatus, hologram recording and reproduction method and hologram recording medium An apparatus and method is disclosed wherein, even if the multiplicity in multiplexing of recording data is increased, positioning of data upon reproduction can be performed with a high degree of accuracy without decreasing the recording capacity. Interference fring... | 10/02/2007 |
| 7277228 | Optical filter and optical instrument In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t... | 10/02/2007 |
| RE39864 | Controlled diffraction efficiency far field viewing devices This invention pertains to the design of optimized far field viewing devices that simultaneously produce bright far field holographic light patterns and achieve good see-through performance to present a well focused scene. A far field transmission hologram recorded ... | 10/02/2007 |
| 7274511 | Anti-reflection film, organic EL device, and display medium using the anti-reflection film and the organic EL device The anti-reflection film has reflectance minimums in at least prime colors. The reflective display medium has the reflectance minimums in at least the prime colors. The light emitting display medium has the reflectance minimums in at least the prime colors, and havi... | 09/25/2007 |
| 7274512 | Optical filter and optical instrument In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t... | 09/25/2007 |
| 7271940 | Deposition of photosensitive media for digital hologram recording Hologram production devices can include holographic recording material deposition systems to deposit holographic recording material as needed by the hologram production device. Various nozzles, ink jets, and similar devices can be used to deposit one or more compone... | 09/18/2007 |
| 7271959 | Optical filter and optical instrument In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t... | 09/18/2007 |
| 7268961 | Color wheel, and method and jig for producing same In a color wheel comprising a plurality of color filter segments arranged so as to form a disk and a support member fixed to the color filter segments, the color filter segments are each outlined only by a circular arc and two straight lines passing through the cent... | 09/11/2007 |
| 7268948 | Optical element and optical scanning device using the same To obtain an optical element capable of obtaining uniform anti reflection characteristics over the whole optical surface having a finite curvature of the optical element, a plurality of convex optical pieces having an anti reflection function are provided on a surfa... | 09/11/2007 |
| 7265905 | Optical filter and optical instrument In an optical filter, a thin film is formed by laminating low refractive index layers alternatingly from a substrate side with high refractive index layers. The thin film is provided with first, second, and third laminated portions. In the first laminated portion, t... | 09/04/2007 |
| 7262890 | Observation optical system An observation optical system has an entrance surface, a reflecting surface, and an exit surface. At least one of these surfaces is configured as a free-formed surface, to which a volume holographic optical element (HOE) is closely adhered. The observation optical s... | 08/28/2007 |
| 7262892 | Hologram reconstruction method and device 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 D... | 08/28/2007 |
| 7262893 | Data read/write device for holographic WORM and method thereof A data writing and reading device is capable of writing and reading data with respect to a holographic storage medium. The data writing and reading device includes a light source which emits a laser beam, a focusing lens unit having a multi-focal lens which splits t... | 08/28/2007 |
| 7261425 | Structured surface articles containing geometric structures with compound faces and methods for making same A process for making molds for retroreflective sheeting and like articles includes making a substrate having a structured surface of geometric structures such as cube corner elements. The structured surface is in one embodiment partially replicated from a previous g... | 08/28/2007 |
| 7262909 | Illumination apparatus for an optical system and microscope An illumination apparatus for an optical system is disclosed, the illumination apparatus (1) encompassing a single light source (2) that emits broad-band light into an illumination beam path (2a). Placed after the light source (2) ... | 08/28/2007 |
| 7262889 | System and method for volume holographic imaging using spectral illumination A holographic imaging system is disclosed that includes a spectral electromagnetic field unit for providing a plurality of focal areas of a plurality of wavelengths of electromagnetic fields along a first direction, a lens system for directing the electromagnetic fi... | 08/28/2007 |
| 7259898 | Direct view LC display A display is provided having first and second direct view modes of operation. The display comprises a liquid crystal display panel and a backlight which is illuminated during the first mode so that the displayed image is visible throughout an extended viewing region... | 08/21/2007 |
| 7259897 | System, method and apparatus for direct imaging in ultrasonic holography An acoustical holographic imaging method and apparatus for introducing a reference wave into a hologram surface such that the reference wave does not interfere with an object placed adjacent to or in close proximity to the hologram surface. More particularly, the ul... | 08/21/2007 |
