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| Number | Title | Issue Date |
| 7965443 | Controlling light transmission with polarization and ellipticity adjustment Light transmission may be controlled using a system that includes a linear polarizing means and an ellipticity increaser associated with a display. The ellipticity increaser is configured and oriented with respect to the linear polarizing means for increasing the el... | 06/21/2011 |
| 7916393 | Optical level control device, method for controlling same, and laser application device The optical level control device independently controls the intensities of two beams having different wavelengths that are emitted from a laser oscillator, and the optical level control device includes a wavelength-dependent wavelength plate and a polarization beam ... | 03/29/2011 |
| 7894134 | Sinusoidal polarization A linearly polarized transparent or translucent material is stretched to follow a sinusoidal shape so all parts of the resulting panes or lenses are themselves sinusoidal. By providing a structure of two panes or lenses of such material, moving one relative to the o... | 02/22/2011 |
| 7804644 | Optical level control device, method for controlling same, and laser application device The optical level control device independently controls the intensities of two beams having different wavelengths that are emitted from a laser oscillator, and the optical level control device includes a wavelength-dependent wavelength plate and a polarization beam ... | 09/28/2010 |
| 7773299 | Controlling light transmission in a vehicle with polarization and ellipticity adjustment Light transmission in a vehicle may be controlled using a system that includes a linear polarizing means and an ellipticity increaser associated with a display in the vehicle. The ellipticity increaser is configured and oriented with respect to the linear polarizing... | 08/10/2010 |
| 7724435 | Importance sampling techniques based on adjustable differential group delay (DGD) elements Devices and their operations to use multiple adjustable differential group delay (DGD) elements in various applications including tunable PMD emulators and compensators for producing different PMD profiles with an adjustable average DGD value. ... | 05/25/2010 |
| 7643212 | Rotationally tunable optical delay line A rotationally tunable time delay line device for providing a continually adjustable time delay between two orthogonally polarized laser pulses is described. The device is comprised of one or more rotational delay crystals, each made of a flat uniaxially birefringen... | 01/05/2010 |
| 7570426 | Apparatus and system for wide angle narrow-band optical detection in daylight Techniques for filtering light include, along a central optical axis, an entrance window; a first polarizer, a narrowband polarization-changing material, a second polarizer, and an exit window. The optical paths through the filter are substantively unscattered and p... | 08/04/2009 |
| 7443585 | Polarizer, polarization light source and image display unit using them A polarization component, capable of efficiently reflecting an obliquely transmitted light beam toward a light source without degrading the transmission-polarization property of a perpendicular incident light beam, is provided. A C-plate having an oblique retardatio... | 10/28/2008 |
| 7433558 | Methods for optical isolation in high power fiber-optic systems Methods for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an optical amplifier. Preventing damage to the facet may include expanding a mode area of t... | 10/07/2008 |
| 7420732 | Disappearing and appearing image of an object A process for making a real image of an object appear or disappear to an observer is disclosed. A real image projection system displays a real image of an object. A first polarizer and a second polarizer are utilized to control the appearance and the disappearance o... | 09/02/2008 |
| 7417796 | Wavelength discrimination filter for infrared wavelengths An optical comb filter has polarizers placed before and after two or more birefringent elements, each having a fixed retarder and an aligned tunable liquid crystal. The birefringent elements are equal in birefringence and thickness and are tuned in unison. Wavelengt... | 08/26/2008 |
| 7414786 | System and method converting the polarization state of an optical beam into an inhomogeneously polarized state A system for converting the polarization state of an optical beam which propagates along a path from an initial polarization state into an inhomogeneous polarization state includes a first isotropic material and a first anisotropic material. The first anisotropic ma... | 08/19/2008 |
| 7408710 | Polarizer device adapted to polarized light The invention provides a polarizer device. The polarizer device according to the invention is adapted to a polarized light having an electric field direction. In particular, the polarizer device according to the invention enables the polarizer to be automatically ad... | 08/05/2008 |
| 7391568 | Luminous intensity distribution control device and display having the same A liquid crystal display apparatus including: a liquid crystal display element having a liquid crystal layer; a backlight apparatus arranged at one side of the couple of substrates of the liquid crystal display element; a polarizer arranged between the liquid crysta... | 06/24/2008 |
| 7379243 | Mirror with built-in display A mirror device (1) which can be simultaneously used for display purposes, based on e.g. an LCD display (5) with a polarizing mirror (2) placed in front of it. The polarizing mirror (2) has the characteristics that it does not disturb the... | 05/27/2008 |
| 7375889 | Apparatus and method for controlling polarization in an optical communications medium A method for resetting a polarization controller includes determining that the phase magnitude is associated with a first range of phase angles and generating a first control signal having a first characteristic if the phase magnitude is increasing, and generating t... | 05/20/2008 |
| 7362505 | Mirror with built-in display A mirror display device which may be simultaneously used for display purposes, based on a display, wherein the display device during use provides light of a first (circular) polarization, with a switchable polarizing mirror placed in front of it. The reflectivity of... | 04/22/2008 |
| 7335873 | Light condensing method and light condenser as well as near-field optical microscope and storage device formed by applying the same A light-condensing method of irradiating light whose electric field vectors show two or more than two different directions onto a member having apertures arranged at least at two positions and forming a light-condensing section having a strong electric field between... | 02/26/2008 |
| 7324280 | Apparatus for providing a pattern of polarization A polarization pattern assembly produces a polarization pattern. In an embodiment, a polarization pattern assembly includes a frame that supports a polarization pane in a central region of the frame. The polarization pane changes the polarization direction of light ... | 01/29/2008 |
| 7308171 | Method and apparatus for optical isolation in high power fiber-optic systems Methods and apparatus for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an optical amplifier. Preventing damage to the facet may include expanding a ... | 12/11/2007 |
| 7298940 | Illumination system and display system employing same A compact, light weight, efficient and cost-effective illumination system for optical displays is disclosed. The illumination system is capable of producing a self-luminous light beam of selected cross-section and spatial distribution in terms of intensity and angle... | 11/20/2007 |
| 7286289 | Surveillance window A surveillance window including at least one set of linear polarizer and quarter-waveplate and a reflecting surface. The surveillance window appears dull and opaque to a subject, while allowing a relatively high percentage of light to be transmitted to an observer. ... | 10/23/2007 |
| 7259913 | Faraday rotator for high output lasers A Faraday rotator in which the isolation function based on a temperature rise is not deteriorated even when the Faraday rotator is used for a high output laser of not smaller than 1W output at a wavelength of not larger than 1.1 μm includes sapphire crystals or rut... | 08/21/2007 |
| 7256937 | Structured polarizer and method for making the same A structured polarizer (linear polarizing filter) with side-by-side in a plane (lateral) regions having different polarization directions, complete extinction and complete transparency, is presented with two superpositioned planes (polarizers) with a polarizer whose... | 08/14/2007 |
| 7247356 | Privacy screen for a display A privacy screen for a display (e.g., a LCD) includes having a polarizing film and a birefringent film is described. The privacy screen transmits substantial amounts of light emanating from the display in an orthogonal (or near-orthogonal) direction while not transm... | 07/24/2007 |
| 7245431 | Reflective polarizer assembly An assembly that includes a first reflective polarizer substantially reflecting light having a first polarization state and substantially transmitting light having a second polarization state, a polarization rotating layer or depolarizing layer (or both) positioned ... | 07/17/2007 |
| 7236301 | Polarized light valve A projection system for making an object appear and disappear to an observer on cue. The system remotely activates a reflective axis and a transmissive axis within a polarized window for making an object on cue appear and disappear. In one aspect, this system contai... | 06/26/2007 |
| 7230760 | Polarizers and isolators and methods of manufacture A passively aligned optical isolator includes laminated layers of material including two polarizing glass layers sandwiching a Faraday rotator layer. Each polarizing glass layer comprises a glass matrix containing elongated metal particles exhibiting a change in pol... | 06/12/2007 |
| 7227686 | Tunable PMD emulators and compensators Tunable PMD emulators and compensators for producing different PMD profiles with an adjustable average DGD value. ... | 06/05/2007 |
| 7210815 | Optical device, illumination apparatus, and color illumination apparatus An optical device with a first incidence plane configured to enter rays coming from a first direction, a second incidence plane configured to enter rays coming from a second direction different from the first direction, the rays which entered the first incidence pla... | 05/01/2007 |
| 7196847 | Device and method for an optical tunable polarization interface filter The tuner has constituent component for constructing a tunable or switchable spectral filter, including single and multiple stage filters and fitters without intermediate polarizer, over a wavelength range. It has elements arranged in cascade along a light beam axis... | 03/27/2007 |
| 7195356 | Split-path color switching system and method The present application describes a retarder stack color switch using a single polarization analyzer for reflective-mode projection displays. The single polarization analyzer permits additive mode switching, which optimizes the chrominance of the additive primary ou... | 03/27/2007 |
| 7191338 | Secure method for providing privately viewable data in a publicly viewable display A method for securely providing privately viewable data in a publicly viewable display can include interspersing private data frames among public data frames according to a sequencing pattern. A syncstream can be encoded based upon a syncstream mask. More particular... | 03/13/2007 |
| 7187498 | Surveillance window A surveillance window including at least one set of linear polarizer and quarter-waveplate and a reflecting surface. The surveillance window appears dull and opaque to a subject, while allowing a relatively high percentage of light to be transmitted to an observer. ... | 03/06/2007 |
| 7184213 | Rod integrators for light recycling An integrating rod (200) for use with a multiple segment dynamic filter, such as a spiral dichroic color wheel having three or more narrow filters adjacent to the exit face (206) to enable the integrating rod to recapture light rejected by a given segm... | 02/27/2007 |
| 7173763 | Optical interleaver and filter cell design with enhanced clear aperture An optical interleaver for use in a range of telecommunications applications including optical multiplexers/demultiplexers and optical routers. The optical device includes an optical processing loop which allows multi-stage performance characteristics to be achieved... | 02/06/2007 |
| 7173760 | Luminous intensity distribution control device and display having the same A liquid crystal display apparatus including: a liquid crystal display element having a liquid crystal layer between a couple of substrates; a backlight apparatus arranged at one side of the couple of substrates; a polarizer arranged between the liquid crystal displ... | 02/06/2007 |
| 7169447 | Achromatic quarter wave film An achromatic quarter wave film (AQWF) comprising at least one quarter wave film (QWF) and at least one half wave film (HWF), each of said QWF and HWF comprising polymerized or vitrified anisotropic material, to methods and materials for the preparation of the AQWF,... | 01/30/2007 |
| 7170680 | Privacy screen for a display A privacy screen for a vertically polarized display (e.g., a LCD) that comprises a rotating film, a polarizing film and a birefringent film is described. The privacy screen transmits substantial amounts of light emanating from the display in an orthogonal (or near-o... | 01/30/2007 |
