In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 8070301 | Multi-lamp projection display apparatus with lamp management A multi-lamp projection display apparatus is provided. The multi-lamp projection display apparatus includes a plurality of detachable lamp boxes each having a lamp used as a light source and a memory; and a control device configured to assign an address of the memor... | 12/06/2011 |
| 8070300 | Projection display with a detachable lamp A projection enabling replacement of its lamp with minimum components. The light source lamp section includes a high-pressure discharge lamp and a metal reflector to which the high-pressure discharge lamp is attached. A plurality of engaging portions are provided on... | 12/06/2011 |
| 7922338 | Illumination device and projection display device An illumination device comprises: a plurality of laser light sources arranged so as to be identical in a direction of light emission; an optical element for converting laser light emitted from the laser light sources into parallel light at least in one direction; an... | 04/12/2011 |
| 7883217 | Lamp mount system for projector lamps with mount piece and clips A lamp mount system for high voltage projector lamps includes only a few parts which fit together without the need for connecting hardware. A single piece clip snaps into a single piece lamp mount and, together with the lamp form a lamp mounting assembly. The lamp m... | 02/08/2011 |
| 7758194 | Light source adjusting device A light source adjusting device for a projector is provided. The light source adjusting device includes a base; an adjusting frame having a containing housing; a lamp disposed inside the containing housing as a light source of the projector; a connecting frame conne... | 07/20/2010 |
| 7682029 | System and method for projector lamp door thermal safety latch An information handling system projector lamp door includes a thermal safety latch that secures the lamp cover panel if the temperature of the projector interior exceeds a safety limit associated with potential harm to an end user. A thermostatic spring expands at a... | 03/23/2010 |
| 7434942 | Projection system In one embodiment, a reflector directs light toward a focal point and a light source emits the light and is adjusted with reference to an optical axis through the focal point to generate a desired illumination output. In another embodiment, a reflection system refle... | 10/14/2008 |
| 7390096 | Lamp to illumination optics assembly interface A lamp and illumination optics assembly interface includes an illumination optics mount having a plurality of datum features formed thereon, and a lamp, wherein the lamp is configured to be substantially directly coupled to the illumination optics housing. ... | 06/24/2008 |
| 7377651 | Image projection lighting devices with visible and infrared imaging A lighting system comprised of a central controller, a digital communications path, and a plurality of image projection lighting devices (IPLDs) is provided. The IPLDs contain cameras that can capture both visible light and infrared light. Address signals sent from ... | 05/27/2008 |
| 7357532 | Adjustable lamp module and image projector applied with the lamp module A lamp module mounted on a housing is provided. The lamp module includes a lamp and a lamp sleeve. The plane perpendicular to an optical of the lamp has an x-axis direction and a y-axis direction mutually perpendicular to each other. The lamp is mounted within the l... | 04/15/2008 |
| 7354160 | Projector with adjustable image offset A projector includes illumination optics for providing light beams, a light modulating apparatus for receiving and modulating the light beams provided by the illumination optics, a projection lens for projecting an image of the light beams received from the light mo... | 04/08/2008 |
| 7331699 | Light source unit A light source unit comprises a support for supporting a lamp unit, e.g., a gas discharge lamp or the like. The lamp unit has longitudinal and transversal fiduciary surfaces and the support has guide rails for guiding the lamp unit as it is inserted transversely wit... | 02/19/2008 |
| 7329010 | Rear projection apparatus A housing is mounted with a screen. The housing accommodates a projector unit and a mirror. Image light emitted from the projector unit is projected to the rear of a translucent screen via the mirror. The projector unit includes a unit body, which accommodates liqui... | 02/12/2008 |
| 7270425 | Projection type video display An optimal processing portion (21) inputs a video signal (RGB signals) and analyzes 1-frame video in the video signal. For example, if the intensity of red color is 0 percent in all dots in 1-frame video, the optimal processing portion (21) applies to ... | 09/18/2007 |
| 7264362 | Lens cover A lens cover that may be secured to a case of a projector is herein disclosed. The lens cover has incorporated therein a lens that may be aligned with a lens of the projector to modify the throw ratio of the projector lens. ... | 09/04/2007 |
| 7236285 | Light modulation device and optical display device, and light modulation method and image display method A projection type display device includes dichroic mirrors which separate the light from the light source into light of the three primary colors R, G and B, a plurality of color modulation light valves upon which the light beams separated by the dichroic mirrors are... | 06/26/2007 |
| 7216991 | Lighting unit and projector including the same Exemplary embodiments of the present invention provide a lighting unit including a lamp device adjusted by a general-purpose measuring device at high working efficiency, and yet allowing efficient utilization of light from a light source. In a light source device, s... | 05/15/2007 |
| 7216990 | Integrated lamp and aperture alignment method and system According to one embodiment a method for aligning a light source includes providing a lamp and a lamp interface. The lamp interface has an alignment aperture disposed thereon. The method also includes aligning the lamp with respect to the lamp interface until a desi... | 05/15/2007 |
| 7210798 | Image projection lighting device and control system The methods and apparatus for lighting systems provide a camera integral to a particular image projection lighting device (IPLD) to capture the projected image from the particular IPLD. The captured image can then be sent over a communication system to the operator ... | 05/01/2007 |
| 7188959 | Lamp receiver for use in projector systems A lamp receiver includes a first member, and a datum structure having a plurality of first reference surfaces for alignment with respect in a first direction, a plurality of second reference surfaces for alignment in a second direction, and at least one third surfac... | 03/13/2007 |
| 7137709 | Image projector An image projector allowing a lamp to be replaced alone. The lamp has lamp retention projections each extending from the periphery of a reflector. A lamp mounting member includes a plate with which the reflector of the lamp is brought into contact. The plate has a w... | 11/21/2006 |
| 7111945 | Projector A projector includes a resin-made lamp case in which a light source lamp is fitted and a metal-made optical part holder in which an optical part is fitted. Preferably, the lamp case includes a positioning boss, the optical part holder includes a resin-made lamp case... | 09/26/2006 |
| 7104654 | Light source unit and projector having the same An object of this invention is to provide a light source unit capable of effectively utilizing converged light from a high-pressure discharge lamp by positioning light axes of an ellipsoidal mirror and a lens to coincide. ... | 09/12/2006 |
| 7086739 | Projection display apparatus with capability of controlling whether to cool lamp depending on lamp temperature when restarting lamp A time management section is configured to change an output voltage in accordance with a temperature change characteristic of a lamp allowed to cool down. For restart of the lamp after the turn-off of the lamp, the lamp is cooled by a fan before the operation of tur... | 08/08/2006 |
| 7083287 | Tilt detection in illumination source A method of monitoring an illumination source including a reflector and a lamp. A reference orientation is defined where the reflector and a light producing luminary of the lamp are aligned to optimize light intensity reflected from the luminary to a desired target.... | 08/01/2006 |
| 7077548 | Compliant coupling member for projection device lamp assembly An assembly for a projector include a lamp having a base portion, a lamp mount coupled to the lamp, and a unitary compliant member. The unitary compliant member may be coupled between the lamp mount and the lamp with substantially evenly spaced points of contact abo... | 07/18/2006 |
| 7076145 | Light tunnel retention and adjustment apparatus A light tunnel retention and adjustment mechanism for retaining and aligning a light tunnel in a light tunnel assembly. The light tunnel retention and adjustment mechanism includes one or more first compliant spring fingers that interface with the light tunnel along... | 07/11/2006 |
| 7055963 | Content optimizing system for an image projection lighting device An image projection lighting device is disclosed having a processor and communications port. The communications port may receive a contrast command. The processor may modify contrast of image data in response to the contrast command to form contrast modified image d... | 06/06/2006 |
| 7055964 | Content optimizing system for an image projection lighting device An image projection lighting device is disclosed having a processor and communications port. The communications port may receive a contrast command. The processor may modify contrast of image data in response to the contrast command to form contrast modified image d... | 06/06/2006 |
| 7048389 | Optical projection module An optical projection module includes a front optical module, a rear optical module and an adjustment member mounted between the front and rear optical modules. The front optical module includes a lighting module, an integrated rod and a color wheel. One end of the ... | 05/23/2006 |
| 7033028 | Image projection lighting device An improved image projection lighting device is disclosed. Commands received by a communications port of the base housing may be acted upon to change zoom and focus values of a zoom and focus lens. A cooling system may be provided which compares an input air tempera... | 04/25/2006 |
| 7025463 | Rear projection television with screen panel for receiving projection light There is provided a rear projection television having a construction which facilitates replacement of a light source lamp and repair work within the body. The rear projection television includes a screen panel disposed at the front of a cabinet thereof, for receivin... | 04/11/2006 |
| 7021767 | Integral reflector and heat sink An integral reflector and heat sink for use in a projector assembly includes a reflector portion comprising an integrated heat sink; and a lamp receiving opening defined in the reflector portion. ... | 04/04/2006 |
| 7008065 | Color component aperture stops in projection display system A projection display system employs one or more color modifying aperture stops, such as apodizing aperture stops, to provide high contrast, balanced color and high throughput. One projection system includes a reflective liquid crystal-on-silicon light valve position... | 03/07/2006 |
| 6969175 | Lamp unit for image projector A lamp unit for an image projector comprises: a cable fixing portion comprising two posts and provided to stand inside a lamp box; and a cover plate mounted to contact upper ends of the posts and of the cable fixing portion. A cable for supplying electric power to a... | 11/29/2005 |
| 6961035 | Liquid crystal projector apparatus and driving method for liquid crystal projector apparatus A liquid crystal projector apparatus is presented, which can display an image free from an influence of a temperature variation of a liquid crystal panel without the necessity to directly measure the temperature of the liquid crystal panel. The liquid crystal projec... | 11/01/2005 |
| 6955435 | Image projection lighting device An improved image projection lighting device is disclosed. Commands received by a communications port of the base housing may be acted upon to change zoom and focus values of a zoom and focus lens. A cooling system may be provided which compares an input air tempera... | 10/18/2005 |
| 6956490 | Projector with consumable component having memory device A system includes a projector having a consumable component such, as a lamp. The consumable component includes a memory device. An application on the projector has access to the memory device. Additionally, a user interface, updated by the application, is configured... | 10/18/2005 |
| 6935749 | Projection display device In a projection display device, a plurality of light emitting diode elements are arranged to make up a light emitting diode element array, and a plurality of the light emitting diode element arrays are assembled to form a light source array. The device comprises a m... | 08/30/2005 |
| 6926427 | Projector attachment for ellipsoidal lamp A process and apparatus reversibly converts an ellipsoidal stage lamp into a projector for projecting light with special effects onto a stage. The apparatus includes a replacement for the shutter section, which is a cabinet for disposition within the ellipsoidal sta... | 08/09/2005 |