Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7852570 | Optical film having a set of diffractive features randomly repeating at variable distances A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with at least one machined tool tip and possibly other tool tips. The actuator provides for control of the movement of the tool tip in an x-direction ... | 12/14/2010 |
| 7813054 | Optical elements with saddle shaped structures for diffusing or shaping light Optical elements for efficiently diffusing or shaping light have substrates with saddle shaped structures on their surfaces which provide substantially uniform light along a predefined angular range. Each saddle shaped structure defines an aperture of a lens, where ... | 10/12/2010 |
| 7719777 | Uniform diffuse omni-directional reflecting lens A transparent multi-layer lens construction to be worn as a sunglass lens, or a fashion lens, that reflects light in a diffuse manner. The multi-layer lens construction is, in part, a combination of surface form and surface texture combined with a reflective medium ... | 05/18/2010 |
| 7646518 | Two dimensional image forming device A two dimensional image forming device includes a laser light source which is a coherent light source; a prism array that changes the traveling direction of a beam exiting from the laser light source; a driving portion that rotates the prism array; a rod integrator ... | 01/12/2010 |
| 7477458 | Illumination optical system An illumination optical system for illuminating an object with light from a light source device comprises a plurality of optical surfaces. At least one of the optical surfaces is formed as a roughened surface and is arranged in a position other than closest to the o... | 01/13/2009 |
| 7443608 | Uniform diffuse omni-directional reflecting lens A transparent multi-layer lens construction to be worn as a sunglass lens, or a fashion lens, that reflects light in a diffuse manner. The multi-layer lens construction is, in part, a combination of surface form and surface texture combined with a reflective medium ... | 10/28/2008 |
| 7370972 | Two-dimensional image display device In a two-dimensional image display device, speckle noise is reduced by a simple construction. A two-dimensional image display device for displaying an image by projecting coherent light onto a projection plane is provided with at least one coherent light source (... | 05/13/2008 |
| 7369192 | Methods of making and using optical film, light-diffusing film An embodiment of a method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the op... | 05/06/2008 |
| 7364336 | Plane light source device and display device provided with the same The present invention aims to provide a plane light source device having enhanced efficiency of use of light and high brightness uniformity. A plane light source device of the present invention is provided with a housing having an opening section, a scatterin... | 04/29/2008 |
| 7359596 | Micro lens array and a method of manufacturing a replication mold for the same The micro-lens array in which a plural of convexly-protruded micro-lens are closely arranged two-dimensionally and a plural of convex sub-lenses having a curvature-radius smaller than that of the micro-lens are protrusively formed on the surface of each micro-lens h... | 04/15/2008 |
| 7355800 | Apparatus for projecting a line of light from a diode-laser array A line-of-light projecting module is illuminated by a diode-laser bar and includes light-pipe for homogenizing light from the diode-laser bar in the slow-axis. A shaping optics assembly directs the light emitted by the diode-laser bar into the entrance end of the li... | 04/08/2008 |
| 7355657 | Laser illuminated projection displays A projection video display includes a light source including an OPS-laser delivering laser radiation in multiple transverse modes (a multiple-transverse-mode OPS-laser). The display includes a spatial light modulator for spatially modulating the radiation from the m... | 04/08/2008 |
| 7342719 | Projection screen with reduced speckle The projection screen assembly minimizes speckle while preserving high ambient viewability. The screen assembly, having a light-source side and a viewing side, includes a screen layer, a polarizing contrast filter, and a speckle contrast reducing layer. The screen l... | 03/11/2008 |
| 7341784 | Light management film and its preparation and use A light management film includes a first layer with a thermoplastic resin and a particular phosphonium sulfonate salt, and a second layer formed from a curable composition and having a refractive index of at least 1.5. The light management film exhibits reduced stat... | 03/11/2008 |
| 7339752 | Image pick-up lens system An image pick-up lens system from an object side to an image side includes an aperture stop (10), and a meniscus-shaped lens (20) having a concave surface on the object side and a convex surface on the image side. The lens has at least one aspheric sur... | 03/04/2008 |
| 7327415 | Microvoided light diffuser The invention relates to a light diffuser comprising a thermoplastic layer containing thermoplastic polymeric material and microvoids having a substantially circular cross-section in a plane perpendicular to the direction of light travel and having a diffuse light t... | 02/05/2008 |
| 7324292 | Illumination optical system, illumination apparatus using the illumination optical system, and observation system provided with the illumination optical system or the illumination apparatus An illumination optical system disposed in order to diffuse illumination light emitted from a light source, includes at least one optical device having a roughened optical surface, with the arithmetic average roughness of the roughened surface set in a range of 0.05... | 01/29/2008 |
| 7315557 | Multi-wavelength light source apparatus A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The spectrum expanding device broadens the spectrum of the pulse sequence w... | 01/01/2008 |
| 7283304 | Antiglare film The antiglare film proposed by the present invention has a light-diffusing layer in which fine resin particles are dispersed in a clear resin phase, wherein the fine resin particles comprise at least spherical fine resin particles and bowl-shaped fine resin particle... | 10/16/2007 |
| 7281816 | Surface lighting device A surface lighting device including, a surface light source in which light-emitting element groups having three light-emitting elements, which correspond to three primary colors of light, arranged to be continguous with vertexes of a triangle are arranged in a matri... | 10/16/2007 |
| 7281807 | Positionable projection display devices Described herein are devices that provide projection-type video output in a portable and flexible design. The design includes a projection chamber, a base, and an interface that permits relative positioning between the projection chamber and base. The base maintains... | 10/16/2007 |
| 7278741 | Display apparatus and method for forming an image on a viewer's retina A display device for projecting images of an imaging plate into a retina of an eye of a viewer has a light source, a scattering plate for scattering the light from the light source, an imaging plate transmitting the light scattered by the scattering plate, and an op... | 10/09/2007 |
| 7280170 | Optical film, light-diffusing film, and methods of making and using the same A method of making an optical film comprises heating the optical film comprising greater than or equal to 80 wt. % polycarbonate to a sufficient temperature to stretch the optical film, wherein the weight percent is based on a total weight of the optical film; and s... | 10/09/2007 |
| 7280277 | Light collimating and diffusing film and system for making the film A light collimating and diffusing film and a method for making the film are provided. The film includes a plastic layer having a first side and a second side opposite the first side and at least a first peripheral edge. The first side has a first textured surface, w... | 10/09/2007 |
| 7271962 | Two-dimensional image formation apparatus A two-dimensional image formation apparatus according to the present invention is provided with laser sources (1a)˜(1c), diffusers (6a)˜(6c) for diffusing light, illumination optical systems for irradiating t... | 09/18/2007 |
| 7264360 | Scan type display optical system A scan type display optical system is disclosed in which the position and inclination of an image formed by projection light is made variable. The scan type display optical system comprises an optical scanning member for deflecting and scanning light, and a projecti... | 09/04/2007 |
| 7261421 | Optical projector and image display apparatus using the same Image disturbance called speckle noise occurs when an image generator has a small effective screen size and a projection lens has a small effective diameter. The present invention is intended to reduce speckle noise. In an optical projector, a viewing angle enlargin... | 08/28/2007 |
| 7251079 | Brightness enhancement film, and methods of making and using the same In one embodiment, a brightness enhancement film comprises: a diffusing film comprising a front surface and a back surface, a coating on the front surface, and light redirecting structures disposed in the coating. The brightness enhancement film is capable of collim... | 07/31/2007 |
| 7251082 | Photochromic/vitroceramic window assembly A photochromic/vitroceramic window assembly that restores some of the natural illumination and warm blue-green colors normally excluded from the interior of an enclosed space after blocking at least a portion of infrared and/or UV light, comprising: a) ... | 07/31/2007 |
| 7249878 | Multi-layer illuminated package A sheet of material and package made using the sheet of material. The sheet of material having an having an outer diffuse layer and an inner light piping layer adjacent the diffuse layer. The sheet transmits light to the outer surface of the outer diffuse layer. The... | 07/31/2007 |
| 7244032 | Projector A liquid crystal projector for full-color image projection has three LCD panels as light valve device, associated with respectively primary colors, for displaying an image in a color-separated manner. An ultra high pressure mercury lamp illuminates the LCD panels th... | 07/17/2007 |
| 7244028 | Laser illuminated projection displays A projection video display includes at least one laser for delivering a light beam. The display includes a beam homogenizer and a condenser lens. A scanning arrangement is provided for scanning the light in beam in a particular pattern over the condenser lens in a m... | 07/17/2007 |
| 7224537 | Diffusion lens for diffusing LED light Disclosed herein is a diffusion lens for diffusing LED light. The diffusion lens of the present invention includes a bottom surface, a conic first lens surface, a second lens surface, and a third lens surfaces. According to the present invention, it is easy to manuf... | 05/29/2007 |
| 7218448 | Extended depth of field optical systems A system for increasing the depth of field and decreasing the wavelength sensitivity of an incoherent optical system incorporates a special purpose optical mask into the incoherent system. The optical mask has been designed to cause the optical transfer function to ... | 05/15/2007 |
| 7212345 | Randomized patterns of individual optical elements A method of randomizing elements into a random pattern on a surface so the random pattern of elements substantially entirely consumes a region of the surface includes choosing an overlap distance and creating an initial pattern of elements that substantially entirel... | 05/01/2007 |
| 7206492 | Light guide plate and backlight module adopting the same A light guide plate (120) includes an incidence surfaces (121), an emission surface (123) adjoining the incidence surface, and a bottom surface (122) adjoining the incidence surface and being opposite to the emission surface. The light gu... | 04/17/2007 |
| 7202466 | Apparatus and method for providing high intensity non-coherent light and for speckle reduction An apparatus adapted for confocal imaging of a non-flat specimen comprising a light source for producing a light beam, imaging optics adapted to focus the light beam into at least one spot on a surface of a specimen, and a detector adapted to receive and detect ligh... | 04/10/2007 |
| 7199933 | Image projection screen with reduced speckle noise An image projection module within a housing is operative for causing selected pixels in a raster pattern to be illuminated to produce an image on a display screen of VGA quality. The screen is provided with an array of lenslets to reduce speckle noise in the image. | 04/03/2007 |
| 7193791 | Tilt error reducing aspherical single lens homogenizer A single lens homogenizer for converting a wide, parallel, in-phase Gaussian beam into a narrow uniform-power beam and shooting an object with the narrow uniform-power beam is proposed. A tilt error induces beam deformation. A single lens homogenizer which can reduc... | 03/20/2007 |
| 7185991 | Projector with anamorphic optical system A projector capable of obtaining a smooth motion picture display of high quality without significantly reducing the utilization efficiency of light includes a light source device, a first lens array, a second lens array, a superimposing lens, a liquid crystal displa... | 03/06/2007 |
