Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8184350 | Image display apparatus The image display apparatus includes an image-forming element configured to form an original image, a first optical element configured to reflect a light flux from the image-forming element sequentially by plural reflective surfaces to cause the light flux to emerge... | 05/22/2012 |
| 8035872 | Image combiner and image display device The present invention aims to provide an image combiner and an image display device which can easily have a wide field of view and reduce a thickness of a substrate while reducing loss of light intensity by means of a PBS. An image combiner includes a substrate tran... | 10/11/2011 |
| 7999982 | Hologram optical element, fabrication method thereof, and image display apparatus A volume-phase reflection hologram optical element is fabricated by exposing a hologram photosensitive material to two coherent light beams. One exposure light beam has an axis-asymmetric wavefront, and the other exposure light beam has focus points different in the... | 08/16/2011 |
| 7884985 | High brightness optical device There is provided an optical device, comprising a display source; a light-diffuser; an imaging optical module, and an output aperture from the optical device characterized in that the light diffuser is an angular, non-uniform diffuser of light for increasing a porti... | 02/08/2011 |
| 7835050 | Optical holographic device with a hologram optical element on an area smaller than an irradiation area, holographic image display device and head mounted display with a hologram optical element on an area smaller than an irradiation area A hologram optical element is formed on a substrate so as to make an optical device. The hologram optical element is formed in an area smaller than an irradiation area of a beam for reproduction such as image light or object light on the substrate. Supposing that th... | 11/16/2010 |
| 7826113 | Joined optical member, image display apparatus, and head-mounted display In a joined optical member, let the adhesion strength between a surface coating layer and an eyepiece prism be A1, the adhesion strength between the surface coating layer and a deflector prism be A2, the adhesion strength between the surface coating la... | 11/02/2010 |
| 7502153 | Image display apparatus In an image display apparatus, two light sources emit illumination light having different wavelengths, with which a liquid crystal display device is illuminated. By modulating the illumination light, the liquid crystal display device produces a first and a second im... | 03/10/2009 |
| 7502152 | Device for projecting an object in a space inside a vehicle A device for projecting an object in a space of a vehicle is described. This object is preferably projected holographically, and a voice input and output system is assigned to this object. An artificial passenger is thus created for a driver. ... | 03/10/2009 |
| 7450282 | High precision optical system and beam pathway design for a laser-based distance measuring device A high precision, high performance optical system and beam pathway design for laser-based distance measuring, or range-finding, devices includes an etched, or etched and filled, aiming reticle in the image plane which does not require daytime use illumination, and o... | 11/11/2008 |
| 7444201 | Machine tool or production machine with a display unit for visually displaying operating sequences The invention relates to a machine tool or production machine in which the tool/machine has a display unit (4, 5) for visually displaying operating sequences and/or parameters of the tool/machine, whereby the display unit (4, 5) is provided in the form... | 10/28/2008 |
| 7443657 | Dual position display in an electronic device An apparatus and method are disclosed for an electronic device (100) to incorporate two housing members (104, 106) to expose a first portion (112) of a display or screen (110) when closed. When the two members (104, 106) are moved ... | 10/28/2008 |
| 7436560 | Display device for a vehicle A display device for a vehicle includes a transparent window with a light emission layer intended to separate the interior of the vehicle for emitting visible light when light is beamed onto the light emission layer, a light source for beaming light onto the window,... | 10/14/2008 |
| 7426343 | Holographic optical device, camera finder indication, and camera The present invention relates to a holographic optical element (8), a viewfinder display (5, 6, 7) of a camera (1) using thereof, and a camera (1). The purpose of the present invention is to show various superimposed displays for various ... | 09/16/2008 |
| 7375895 | Device and system for display of information, and vehicle equipped with such a system A device is disclosed for displaying information in a vehicle. The device includes a unit for creating a real image containing information relevant to a driver, to be reflected in a reflective viewing surface located directly above the field of vision actively used ... | 05/20/2008 |
| 7355795 | Head-up display device with curved optical surface having total reflection A display device for displaying information is provided with an optical system for guiding the light of the display device to the eye, the optical system having, in the order in the proceeding direction of the light, an entrance face for receiving the light, a curve... | 04/08/2008 |
| 7355796 | Automobile windshield for HUD system A simple reflecting layered structure is disclosed that is attached to, or incorporated into, an automobile windshield that allows a head-up-display (HUD) to be viewed through anti-glare, p-polarized sunglasses without double imaging and without substantial net alte... | 04/08/2008 |
| 7333165 | Liquid-crystal display apparatus and electronic device A liquid-crystal display apparatus includes a liquid-crystal panel (25) having a color filter (26), a W light-emitting diode (22w) for irradiating white light to the liquid-crystal panel (25), RGB light-emitting diodes (22 | 02/19/2008 |
| 7320144 | Protective mask with removable lens A protective mask and method, comprising a face mask having a body shaped so as to generally cover a face of the user person. The body defines an opening opposite the eyes of the user person when the face mask is worn. A removable lens has a lens portion of see-thro... | 01/22/2008 |
| 7319565 | Silicone rubber surfaces for biometric print TIR prisms Molded silicone rubber sheets with optical quality surfaces and methods for making the same. The silicone rubber sheets are made by molding liquid silicone rubber in a mold. In embodiments, the mold forms parallel optical quality flat surfaces. In one embodiment, a ... | 01/15/2008 |
| 7315235 | First warning system for automotive vehicles A laser-based first warning system for vehicles is principally intended to be used when a vehicle is moving or about to move and can't be seen by oncoming drivers or pedestrians. The first warning system provides lasers on both sides, the front and back of the vehic... | 01/01/2008 |
| 7312906 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 12/25/2007 |
| 7303286 | Projection display device In a projection display device that is provided with a relay lens for converting flux that is emitted from a light source to a parallel flux for illuminating an image display element (DMD), and a total internal reflection prism for both directing flux that is emitte... | 12/04/2007 |
| 7301683 | Hologram and holographic viewing device incorporating it The invention relates to a hologram that enables two or more different images to be simultaneously reconstructed even in a state where the hologram is fixed in terms of relative position with respect to an eye, and a holographic viewing device that incorporates it. ... | 11/27/2007 |
| 7296956 | Machine-tool or production machine with head-up display A machine-tool production machine is disclosed, with a workspace that can be viewed by an operator through a window or transparent pane, whereby the window or transparent pane can be used with a projection unit as a head-up display for displaying information for the... | 11/20/2007 |
| 7298535 | Digital situation indicator A personal monitoring system to be worn by an individual in a hazardous situation comprises an enclosed face mask which includes a transparent shield over at least the eves a sensor module secured to the individual which includes a plurality of sensors, a microproce... | 11/20/2007 |
| 7295377 | Compensating head mounted display device An HMD device including an image-generating unit for generating a polychromatic image and deflection optics having first and second partial optics. The deflection optics project the image such tat it is perceivable by a user wearing the HMD device. The two partial o... | 11/13/2007 |
| 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 |
| 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 |
| 7271798 | Liquid crystal exposure device A color liquid crystal exposure apparatus includes a color light source for emitting a plurality of colored light beams, a liquid crystal shutter having a plurality of liquid crystal pixels arrayed in a direction orthogonal to the direction of the relative movement,... | 09/18/2007 |
| 7265882 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 09/04/2007 |
| 7265903 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 09/04/2007 |
| 7262919 | Head-up display device with curved optical surface having total reflection A display device for displaying information is provided with an optical system for guiding the light of the display device to the eye, the optical system having, in the order in the proceeding direction of the light, an entrance face for receiving the light, a curve... | 08/28/2007 |
| 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 |
| 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 |
| 7257920 | Aiming device The present invention comprises a reflective surface used in conjunction with an aiming device that provides the user targeting information on a surface directly on the aiming device. The reflective surface is moveably mounted directly behind the aiming device, wher... | 08/21/2007 |
| 7256915 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 08/14/2007 |
| 7253960 | Head-up display device with rotationally asymmetric curved surface A display device for displaying information is provided with an optical system for guiding the light of the display device to the eye, the optical system having, in the order in the proceeding direction of the light, an entrance face for receiving the light, a curve... | 08/07/2007 |
| 7242371 | Wireless electronic display The present invention is a portable electronic video display. The display is configured to be worn on the arm or wrist of a user, or stored in a pocket or backpack. The display is raised to eye level and the user looks through an eyepiece to view the video display. ... | 07/10/2007 |
| 7239307 | Driving circuit of display and display device A driving circuit of a display to display full color by light emitting elements is provided which can attain sufficient display characteristics even when there is a difference in characteristics of the light emitting elements and can lower power consumption. The dri... | 07/03/2007 |
| 7225471 | Removable optical assembly for a helmet There is provided a removable optical assembly for a helmet. The removable optical assembly includes an optical device retention system and an optical device attachment assembly. The optical device retention system is adapted to couple to the helmet and has an optic... | 06/05/2007 |
