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| Number | Title | Issue Date |
| 7317501 | Optical film, light reflective film, liquid crystal display panel, method and apparatus for producing an optical film, method of producing a die roller, and method and apparatus for laminating an optical film An object of the invention is to provide a light reflective film which can prevent moire fringes from occurring. A rough face in which a plurality of rows of pyramidal convex portions that are linearly continuous are adjacently formed in parallel with one another is... | 01/08/2008 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 7273305 | Visual display device A lighting device especially suitable for automotive center-high-mounted-stop-light (CHMSL) and brake light applications is provided. The lighting device comprises a display panel having at least two interfaces therein, with at least one interface configured as a li... | 09/25/2007 |
| 7182040 | Personnel guidance and location control system A personnel location control system for controlling and guiding a group of individuals in a selected path to a waiting point and then to an activity in advance of that waiting point. The system in one embodiment relies upon a plurality of disks or like guide path-fo... | 02/27/2007 |
| 7182829 | Cube corner cavity based retroreflectors with transparent fill material Retroreflective sheeting includes a body layer having a structured surface with recessed faces forming cube corner cavities. A reflective film is disposed at least on the recessed faces, and a fill material fills the cube corner cavities. The fill material comprises... | 02/27/2007 |
| 7177081 | High contrast grating light valve type device A grating light valve has with a plurality of spaced reflective ribbons are spatially arranged over a substrate with reflective surfaces. The grating light valve is configured to optimized the conditions for constructive and destructive interference with an incident... | 02/13/2007 |
| 7068372 | MEMS interferometer-based reconfigurable optical add-and-drop multiplexor The interferometer comprises a beam splitter, a mirror and a phase modulator. The beam splitter splits a signal into a first portion and a second portion. The mirror reflects the first portion. The first portion includes an optical path length, which is fixed. The p... | 06/27/2006 |
| 7057819 | High contrast tilting ribbon blazed grating The light modulator includes elongated elements and a support structure coupled to the elongated elements. Each element includes one or more lengthwise slits within an active optical area, and a light reflective planar surface with the light reflective planar surfac... | 06/06/2006 |
| 7054515 | Diffractive light modulator-based dynamic equalizer with integrated spectral monitor An integrated device of the present invention comprises free-space optics, a bi-directional multiplexor/de-multiplexor, a diffractive light modulator, a beam splitter, an optical performance monitor, and a controller. The free-space optics collimate, transform and i... | 05/30/2006 |
| 7049164 | Microelectronic mechanical system and methods The current invention provides for encapsulated release structures, intermediates thereof and methods for their fabrication. The multi-layer structure has a capping layer, that preferably comprises silicon oxide and/or silicon nitride, and which is formed over an et... | 05/23/2006 |
| 7042611 | Pre-deflected bias ribbons A modulator for and a method of modulating an incident beam of light including means for supporting a plurality of active elements and a plurality of bias elements, each active and bias element including a light reflective planar surface with the light reflective pl... | 05/09/2006 |
| 7025482 | Light guide member and illuminating device The invention provides a light guide member and an illuminating device which are able to efficiently uniformly irradiate illumination light to only an area requiring illumination. Therefore, a reflection face is constructed by reflection stripes such as many grooves... | 04/11/2006 |
| 7027202 | Silicon substrate as a light modulator sacrificial layer An optical MEM device is fabricated with a patterned device layer formed on a silicon wafer. Preferably, the patterned device layer is patterned with plurality of ribbons and/or access trenches. The central portion of the ribbon is released from the silicon wafer us... | 04/11/2006 |
| 6966660 | Article exhibiting dry and wet retroreflectivity A exposed-lens retroreflective article exhibiting retroreflection under dry and wet conditions is provided. The inventive article comprises a first set of optical elements having a first reflective layer disposed on the embedded portion of the elements. The first se... | 11/22/2005 |
| 6964507 | Sign illumination system A radiation-emitting device comprising a side-emitting optoelectronic device having an upper surface and a heat sink in thermal conductivity with the side-emitting optoelectronic device. A reflector at least partially surrounds the side-emitting optoelectronic devic... | 11/15/2005 |
| 6956995 | Optical communication arrangement An arrangement for optical communication comprises an optical coupler, an opto-electronic board, and an optical fiber. The optical fiber comprises a first refraction surface, a second refraction surface, and an internal reflector. The first refraction surface has a ... | 10/18/2005 |
| 6956878 | Method and apparatus for reducing laser speckle using polarization averaging A method and apparatus for reducing speckle uses polarization averaging. A polarizing beam splitter divides a first polarized laser output into a second polarized laser output and a third polarized laser output. A plurality of mirrors creates an optical path differe... | 10/18/2005 |
| 6947613 | Wavelength selective switch and equalizer A device comprising a light modulator including a plurality of elements wherein each element is selectively operable such that the plurality of elements are dynamically configurable to combine selected ones of a plurality of grating periods such that selected portio... | 09/20/2005 |
| 6934070 | Chirped optical MEM device A light modulator comprises a series of ribbons divided by a series of gaps. Sequences of consecutive ribbons and gaps are grouped together to form a plurality of pixels that are configured to process a respective plurality of wavelengths. The spacing from center-li... | 08/23/2005 |
| 6928207 | Apparatus for selectively blocking WDM channels An apparatus for selective blocking WDM channels comprises a light modulator, a diffraction grating, and a transform lens. The light modulator comprises an array of pixels. Each pixel of the light modulator is selectively operable to direct light into a first mode a... | 08/09/2005 |
| 6927891 | Tilt-able grating plane for improved crosstalk in 1×N blaze switches A light modulator includes elongated elements arranged parallel to each other. Each elongated element includes a light reflective planar surface with the light reflective planar surfaces configured in a first grating plane. A support structure is coupled to the elon... | 08/09/2005 |
| 6922272 | Method and apparatus for leveling thermal stress variations in multi-layer MEMS devices A MEMS device such as a grating light valve™ light modulator is athermalized such that the force required to deflect the movable portion of the MEMS device remains constant over a range of temperatures. In MEMS embodiments directed to a grating light valve™ ligh... | 07/26/2005 |
| 6908201 | Micro-support structures A MEM device in accordance with the invention comprises one or more movable micro-structures which are preferably ribbon structures or cantilever structures. The ribbon structures or cantilever structures are preferably coupled to a substrate structure through one o... | 06/21/2005 |
| 6758567 | One-piece reflective marking sheet A continuously formed, low profiled reflective pavement marker comprising a multiple, inclined, low profiled reflective portions, which are integrally connected by horizontally, positioned reflective sheeting. Each raised reflective portion integrally having multipl... | 07/06/2004 |
| 6558011 | Reflective marker The present invention provides a reflective marker such as is used to delineate the location of a road, driveway or parking area. A reflective marker according to the invention includes a support post and a head fastened to the support post. The head incl... | 05/06/2003 |
| 6441943 | Indicators and illuminators using a semiconductor radiation emitter package A vehicle lamp assembly includes a housing and an LED lamp carried in the housing. A signal mirror, includes a mirror; and an LED lamp. The LED lamp includes a heat extraction member.... | 08/27/2002 |
| 6305874 | Road-marking complex and system for marking roads A first road marking unit with a first base plate is provided with a first light source, and a second road-marking unit with a second base plate is provided with a second light source. A view angle of 0.1ࣘࣘ8° is formed between an interconnecti... | 10/23/2001 |
| 6264334 | Road-curve mirror with radio wave reflection plate A movable body detecting device and a road-curve mirror with a radio wave reflection plate for allowing a reception side movable body present at a position where the movable body is hidden from a transmission side movable body to accurately receive movabl... | 07/24/2001 |
| 6168276 | Road safety reflector A road safety reflector assembly has a pair of oppositely disposed finger cradles with a hollow, reinforceable housing, which has one or two reflectors mounted therein.... | 01/02/2001 |
| 6084709 | Delineator capable of reflecting oblique incident light beam A delineator easily recognized by the driver even when attached at a moderate curve of a road includes colorless transparent reflectors attached inclined by a prescribed angle with respect to an aluminum base and amber transparent reflectors attached incl... | 07/04/2000 |
| 5818640 | Sign illumination system and method This relates to a system for and method of illuminating a sign, so that drivers and observers may easily recognize and read the sign and billboard. The apparatus employs an external illumination source that is easy to inspect and maintain. The illuminatio... | 10/06/1998 |
| 5774265 | Durable retroreflective elements All-ceramic retroreflective elements which may be used in pavement markings comprising an opacified ceramic core and ceramic optical elements partially embedded into the core.... | 06/30/1998 |
| 5731895 | Post mounted reflector A reflective element mountable to a post comprises a body member having an internal keyway formed therein for sliding over the post. A bore is provided, preferably transversely through the body member, and is dimensioned to receive either a pin or a bolt ... | 03/24/1998 |
| 5731766 | Route guide system and method A route guide system for making guidance of the traveling direction in the sight field of the driver during traveling. The road guide plate is provided in front of a turning point. This road guide plate emits light differing in flash timing according to t... | 03/24/1998 |
| 5703719 | Reflector road sign with self-provided light means A reflector road sign including a reflector body made of a tempered glass having Fe2 O3 content below 0.3%, a casing made to receive the reflector body, a solar lighting system installed in the reflector body, the solar lighting syst... | 12/30/1997 |
| 5557461 | Omnidirectional retro-reflective roadway marker and the like A novel roadway or similar marker strip having preferably retro-reflective-beaded protuberances in a critical "herringbone"-like pattern that provides a surprising degree of azimuthal uniform omindirectionality of light reflected from the strip.... | 09/17/1996 |
| 5502593 | Compact pavement marker A low profile pavement marker having a glass bead type reflector and an inclined top surface is disclosed. Flanges extend from a peripheral surface on the face and from the rear of the reflector for engagement with epoxy for mounting the pavement marker t... | 03/26/1996 |
| 5450236 | Reflector, especially for display signs and road signs and a sign manufactured thereof A reflecting material, especially for display signs and road signs, is in the form of a plate (20) which is made of a transparent material and has a front surface (21) and, substantially parallel thereto, a reflecting rear surface (22). The rear surface h... | 09/12/1995 |
| 5442870 | Reflective sign A retro-reflective sign is provided having a front face member attached to a back member. The face member has a plurality of cube corners disposed along its back surface. The sign can be of any shape or color and provides superior light reflection at nigh... | 08/22/1995 |
| 5432642 | Pseudo-luminous panel, substrate therefor and display element and device using the pseudo-luminous panel A pseudo-luminous panel has a substrate and a thin film optical color filter formed all over the main surface of the substrate with or without a reflecting film interposed therebetween. The main surface of the substrate is formed by obliquely downward and... | 07/11/1995 |
