Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8067881 | Light emitting device A light emitting device comprises: a concave mirror having one focal point; a plurality of main light sources each of which is arranged between the focal point and a light reflection surface of the concave mirror, and emits light toward the light reflection surface;... | 11/29/2011 |
| 7982380 | Front filter for plasma display and plasma display A front filter for a plasma display that is mainly used as a TV display. The front filter has an anti-glare function which is capable of effectively preventing reflection concurrently with achieving black color reproduction, and a functional layer for imparting a fu... | 07/19/2011 |
| 7388322 | Illumination device for microscopes The invention is directed to an illumination device for microscopes which is provided with a halogen lamp with a reflector and a filament extending in direction of the optical axis and a scatter disk and which enables a homogeneous illumination of the visual field w... | 06/17/2008 |
| 7360923 | Light-emitting diode carrier In a light-emitting diode carrier 1, a plurality of light-emitting diodes 9 are mounted on the rear side 3 of the light-emitting diode carrier and project into a plurality of openings 2. During operation, the light-emitting diodes 9 | 04/22/2008 |
| 7349103 | System and method for high intensity small spot optical metrology An apparatus and method for examining features of a sample with a broadband beam of light obtained from a long-wavelength source that may include two distinct emitters that emit a long-wavelength radiation and a short-wavelength source that emits a short-wavelength ... | 03/25/2008 |
| 7331690 | Infrared headlight An infrared headlight useful in a night vision system may be made with an infrared emitter positioned in a reflector. The radiation source is associated with a filter body which has a first filter layer part and a second uncoated part. The two parts are designed so ... | 02/19/2008 |
| 7332273 | Antireflective coatings for high-resolution photolithographic synthesis of DNA arrays The present invention provides an array of polymers and methods of forming arrays of polymers by providing a substrate having a first layer including one or more dielectric coatings on a solid support and a second layer including a plurality of polymers disposed on ... | 02/19/2008 |
| 7329982 | LED package with non-bonded optical element Light sources are disclosed utilizing LED dies having at least one emitting surface. An optical element is provided for efficiently extracting light out of an LED die by controlling the angular distribution of the emitted light. The optical element is optically coup... | 02/12/2008 |
| 7323809 | Lamp emitting visible and IR light A lamp radiates visible light and infrared light. The lamp bulb of the lamp includes at least a first region which is at least partly permeable to infrared light, and at least partly impermeable to visible light. At least a second region of the bulb is wholly or par... | 01/29/2008 |
| 7321464 | Electroluminescent light source and display incorporating same A brightness enhanced reflective polarizer includes a reflective polarizer and a structured surface material. ... | 01/22/2008 |
| 7319285 | Optical device, illumination apparatus using the device, and projector using the illumination apparatus An optical device which leads light beams emitted by a light source to a predetermined illumination area comprises first and second light leading members. The first light leading member includes a first incident surface configured to be entered the light beams emitt... | 01/15/2008 |
| 7317284 | Spacer bead geometry for controlled sealing stability A shaped bead structure provides a bottom sealing periphery adjacent a non-bonding portion which may include an upper portion which may provide upper envelope stability and may but will preferably not bond to the glass envelope. The provision of a section of the gla... | 01/08/2008 |
| 7303339 | Optical beam transformer module for light coupling between a fiber array and a photonic chip and the method of making the same Optical modules and methods for making optical modules are described. In one embodiment, an optical module includes a substrate assembly including a photonic chip mounting region, and a groove extending towards the photonic chip mounting region. A waveguide is dispo... | 12/04/2007 |
| 7244965 | Power surface mount light emitting die package A light emitting die package is disclosed. The die package includes a substrate, a reflector plate, and a lens. The substrate may be made from thermally conductive but electrically insulating material or from a material that is both thermally and electrically conduc... | 07/17/2007 |
| 7241021 | Emergency information lighting system An emergency information lighting system (100/200/300), comprising a primary light source (110/210/310) and a housing (112/212/312) for the primary light source (110/210). The housing (112/212/312) includes a first wall (120/220... | 07/10/2007 |
| 7228052 | LED light pipe structure An LED light pipe structure includes a light pipe, a light refraction plate, and a light emitting diode which are integrally formed into one body, so as to enable the light emitting diode inside the light pipe to generate a visible light for illumination, through a ... | 06/05/2007 |
| 7218043 | Plasma display panel with light guides for improving contrast Disclosed is a plasma display panel. The plasma display panel comprises a lower substrate and an upper substrate, which are spaced apart by a predetermined distance from each other to define a plurality of discharge cells therebetween; a plurality of barrier ribs di... | 05/15/2007 |
| 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 |
| 7208234 | Organic EL element and method of manufacturing the same, organic EL display device using the element, organic EL material, and surface emission device and liquid crystal display device using the material In an organic EL element, an organic EL layer is interposed between anodes and cathodes formed on a substrate. Each of the cathodes is made of a first conductive film that comes into contact with the organic EL layer and a second conductive film that constitutes a l... | 04/24/2007 |
| 7201508 | Backlighting method for an automotive trim panel The present invention relates to an apparatus and method of perforating the cover layer or soft skin of an automotive trim panel such as an instrument panel with a laser to allow light to bleed through the perforations. The light source would preferably be a low hea... | 04/10/2007 |
| 7196950 | Non-volatile semiconductor storage device performing ROM read operation upon power-on A power-on reset circuit has a power-on level detecting circuit which detects a power voltage to output a power-on reset signal and a delay circuit which delays the power-on reset signal output by the power-on level detecting circuit. Two chip address specifying pad... | 03/27/2007 |
| 7196460 | Incandescent reflector heat lamp with uniform irradiance An infrared heat lamp has a reflector body closed by a lens and having a source of infrared radiation positioned within the body. The lens has a plurality of lenticules formed thereon to provide substantially uniform radiant intensity within a 50° cone on a planar ... | 03/27/2007 |
| 7186005 | Color-changing illumination device An illumination device for simulating neon or similar lighting is generally comprised of a rod-like member, a housing, a light source, and an intermediate light-transmitting medium extending along and positioned adjacent the light source with a light-receiving surfa... | 03/06/2007 |
| 7183712 | Lamp for a vehicle headlight with low-beam function The invention relates to a lamp for a vehicle headlight with low-beam function, which lamp has an outer envelope and emits at least visible light of different colors from several regions of the outer envelope, characterized in that in that a partial coating is at le... | 02/27/2007 |
| 7157839 | Phosphor based light sources utilizing total internal reflection A LED package including an LED that emits excitation light at an excitation light wavelength and a layer of phosphor material positioned to receive the excitation light and having a first index of refraction at the excitation light wavelength. The phosphor material ... | 01/02/2007 |
| 7157844 | Cathode ray tube provided with a faceplate having a convex outer surface and a lens assembly attached therein In a projection cathode ray tube device in which a projection cathode ray tube and a projection lens assembly are coupled and held by a coupler, superior focus characteristics and high resolution are realized by eliminating the deviation between the center of the ph... | 01/02/2007 |
| 7144131 | Optical system using LED coupled with phosphor-doped reflective materials To improve semiconductor-based systems for generating white light, a phosphor is integrated into a reflective material of an external structure. A disclosed exemplary system, for luminance or illumination applications, utilizes an energy source package, for emitting... | 12/05/2006 |
| 7142377 | Lens-attached light-emitting element A lens-attached light-emitting element for increasing an optical availability efficiency is provided. A lens-attached light-emitting element for structuring a light-emitting element array arranged in one dimension comprises a light-emitting element having an approxi... | 11/28/2006 |
| 7137718 | Automotive lamp A vehicle lamp includes a lamp chamber containing at least one light source in an interior thereof and having a light-emitting opening, a lamp cover is attached to the light-emitting opening, and a polarizing film is applied to an inner surface of said cover body. T... | 11/21/2006 |
| 7116485 | Apparatus of LED flat light signal display The present invention discloses an apparatus of LED flat light signal display, which comprises at least one light emitting diode, a plurality of flat microlens and at least one microlens set. The light emitting diode acts as a light source for discharging light. The... | 10/03/2006 |
| 7098589 | Light emitting devices with high light collimation Light-emitting devices, and related components, systems and methods are disclosed. The light-emitting device can include a multi-layer stack of materials and a support. The multi-layer stack of materials can include a light-generating region and a first layer suppor... | 08/29/2006 |
| 7095334 | Strip LED light assembly for motor vehicle A light emitting diode (LED) warning signal light, the warning signal light comprising a plurality of light sources constructed and arranged with a reflector or cullminator, the LED light source being in electrical communication with a controller and a power supply,... | 08/22/2006 |
| 7091652 | Flat panel color display with enhanced brightness and preferential viewing angles A light directing apparatus comprising an LED array having RGB light emitting diode structures arrayed longitudinally along a substrate to form a plurality of RGB triplet groups and a lenslet array having a plurality of lenslet structures positioned adjacent a respe... | 08/15/2006 |
| 7064674 | Replaceable LED modules A modular warning signal light system comprising at least one support. The at least one support having at least one module receiving port. The module receiving ports constructed and arranged to removably receive the support engagement member of a module. Each module... | 06/20/2006 |
| 7046160 | LED warning light and communication system A light emitting diode (LED) warning signal light and communication device comprising a controller for generating a first observable light signal and a second non-observable light signal within said first light signal. The second light signal is formed of packets of... | 05/16/2006 |
| 7038593 | Strip LED light assembly for motor vehicle A light emitting diode (LED) warning signal light, the warning signal light comprising a plurality of light sources constructed and arranged with a reflector or cullminator, the LED light source being in electrical communication with a controller and a power supply,... | 05/02/2006 |
| 7030556 | Light emitting device with an incorporated optical wavelight layer A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of pictur... | 04/18/2006 |
| 7011432 | Lighting source structure A lighting source structure has a base having at least one electrode coupled to a power source and a plurality of light sources, with each light source electrically coupled to the electrode to produce light when stimulated. The plurality of light sources are arrange... | 03/14/2006 |
| 7002289 | Light-emitting device having light-emissive particles partially coated with intensity-enhancement material A light-emitting device (52) suitable for a flat-panel cathode-ray tube display contains a light-emissive region (66) formed over a plate (64). The light-emissive region contains a plurality of light-emissive particles (72). Part of the o... | 02/21/2006 |
| 6987355 | Stacked OLED display having improved efficiency An OLED device, having a pixel includes a plurality of individually addressable first white light emitting elements; a corresponding plurality of color filters located over the first white light emitting elements to filter the light emitted by the first white light ... | 01/17/2006 |
