Optics: image projectors inventions 05/09

20090135373 - Variable-speed text projector: This invention introduces a variable-speed text projector that consists of two concentric cylinders and uses the convection of heat from a central light bulb to rotate the inner cylinder. A circular cover that fits onto the larger outer cylinder (projection screen). This circular cover controls the speed of the rotation... Agent: Gary Dreiblatt

20090135374 - Display device and vehicle based thereon: A display device includes: a light source configured to generate a coherent light beam; and an optical plate including a plurality of microlenses arranged with a period larger than the diameter of the light beam, the optical plate being configured to control the divergence angle of the light beam.... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090135375 - Color and brightness compensation in laser projection systems: A multi-color laser projection system comprising a multi-color laser source, laser projection optics, an optical intensity monitor, and a projection controller is provided. The multi-color laser source is configured to generate a frequency-converted optical beam λ1, and a native frequency optical beam λ2. The laser projection optics is configured to... Agent: Corning Incorporated

20090135376 - Lighting apparatus, display apparatus, projection display apparatus, lighting method, image display method and image projection method: Red light emitted from a red laser light source, green light emitted from a green laser light source and blue light emitted from a blue laser light source are incident on a first disc body of a color wheel, are transmitted or reflected in conformity with the colors of the... Agent: Wenderoth, Lind & Ponack L.L.P.

20090135377 - Projection display device: A projection display device is discussed, which can include a condensing lens having a refractive index higher than that of a collimating lens, thereby being capable of miniaturizing not only the collimating lens, but also lenses arranged downstream from the condensing lens.... Agent: Birch Stewart Kolasch & Birch

20090135378 - Projection device: A projection device is provided. The projection device comprises a heat source, a housing, and a cooling system. The cooling system is disposed inside the housing of the projection device. The housing comprises at least one outlet and at least one inlet. The cooling system comprises a first cooling device... Agent: Grossman, Tucker, Perreault & Pfleger, PLLC

20090135379 - Adjusting apparatus for projector: An adjusting apparatus is provided for a projector having a front wall defining a slot therein, and a bottom wall defining a D-shaped through hole therein. The adjusting apparatus includes an operating member rotatably supported in the projector and partially exposed out of the projector from the slot of the... Agent: PCe Industry, Inc. Att. Steven Reiss

20090135380 - Led night light has projection or image feature: The current invention for LED night light for night time or dark area use including plug-in wall outlet night light or direct current (DC) operated night light with projection or image features to project or present the image, message, data, logo, time on ceiling, walls, floor, desired surface, optics means... Agent: Bacon & Thomas, PLLC

20090128781 - Led multiplexer and recycler and micro-projector incorporating the same: A micro-projector comprises an LED layer, a light pipe coupled to the LED, a LCOS panel, a projection lens, a PBS, an aperture layer coupled to the output end of the light pipe which has a transmissive opening for transmitting a portion of the light output and a reflective surface... Agent: Fulbright & Jaworski, LLP

20090128782 - Mems based projector: A MEMS-based projector may be included in various user devices. A selective fold mirror, a MEMS-based projector, and a polarization rotator may be oriented to reflect a beam within the device for external projection. Alternatively, a total internal reflection prism may take the place of a selective fold mirror or... Agent: Microvision, Inc.

20090128780 - Polarization conversion system and method for stereoscopic projection: A polarization conversion system separates light from an unpolarized image source into a first state of polarization (SOP) and an orthogonal second SOP, and directs the polarized light on first and second light paths. The SOP of light on only one of the light paths is transformed to an orthogonal... Agent: Real D - Patent Department

20090128783 - Ocular-protection projector device: The present invention discloses an ocular-protection projector device, wherein the projector is additionally equipped with an image-capture unit. When the projector projects information onto a screen, the image-capture unit captures the human-shape image of a user. An image-processing unit, which is arranged inside the projector or an external electronic device,... Agent: Rosenberg, Klein & Lee

20090128784 - Projection display device: A projection display device is discussed, which includes an optical system having an improved arrangement, thereby being capable of reducing the size of the projection display device.... Agent: Birch Stewart Kolasch & Birch

20090128785 - Multifunction projector case with screen: A case for holding a portable projection device, the case including a housing having interior surfaces for holding the portable projection device; and a projection screen for viewing images from the portable projection device.... Agent: David A. Novais Patent Legal Staff

20090128786 - Imaging system with a microelectromechanical light valve: An imaging system comprises a light valve having an array of light valve pixels. For processing grayscale/color images, each light valve pixel represents a discrete grayscale level. During image processing, desired grayscales can be accomplished by imaging the light valve pixels onto the target such that the perceived grayscale of... Agent: Texas Instruments Incorporated

20090122266 - Image projection device and method: A device for producing a two dimensional image includes means for generating coherent light, and means for directing light received from the means for generating coherent light to a plurality of electrically addressable spatial light modulators (EASLM). The device includes means for diffracting the light, wherein the light is simultaneously... Agent: Stolowitz Ford Cowger LLP

20090122267 - Projection optical system: A projection optical system includes a grating configured for splitting a light input into red, green and blue lights for generating red, green and blue lights of mutually different colors, a liquid crystal panel positioned to receive light outputs from the grating and configured for superimposing spatial information on the... Agent: PCe Industry, Inc. Att. Steven Reiss

20090122268 - Blind for a projector: A blind (10) for a projector includes a bracket (20) mounted to the projector, and a folded fin (30) fixed on the bracket and covering a hot air vent of the projector. The folded fin includes a plurality of parallel fins (32) and a plurality of upper and lower tabs... Agent: PCe Industry, Inc. Att. Steven Reiss

20090122269 - Methods and systems for improving operation of a video projector: A method of operating a video device includes determining an operating temperature, determining if the operating temperature is above normal operating temperature for the video projector, and setting the video projector in economy mode if the operating temperature is above the normal operating temperature.... Agent: Mh2 Technology Law Group, LLP

20090122270 - Projector with dust suction member: A projector includes a light source, an electro-optical device, a projection lens, an outer casing for housing the above components, and a dust suction member. The electro-optical device is configured for forming an optical image using a light beam emitted from the light source. The projection lens is configured for... Agent: PCe Industry, Inc. Att. Steven Reiss

20090122271 - Image display apparatus: An image display apparatus is provided that allows a user to check image content even in a place where there is no projection screen. A projector that is one mode of the image display apparatus includes a casing, a projection aperture provided in the casing, and an internal projection mirror... Agent: Osha Liang L.L.P.

20090122272 - Projection apparatus using solid-state light source array: An illumination apparatus for a digital image projector, the illumination apparatus has a plurality of solid-state laser arrays, each laser array with one or more rows of laser. A light combiner has an output optical axis and a plurality of light-redirecting prisms arranged in a stack. Each light-redirecting prism has... Agent: Frank Pincelli Patent Legal Staff

20090122273 - Color wheel fabrication: A pressure sensitive adhesive (PSA) is used to attach a plurality of wedge-shaped glass filter segments on a first side to a hub during the color ring build portion of the color wheel fabrication process. A strong adhesive, such as epoxy, is then used to adhere a second side of... Agent: Pearne & Gordon LLP

20090122275 - Image display apparatus and method for displaying image: A projector that can prevent laser light from entering eyes is provided. A process that controls the projector includes the steps of detecting turning-on of power to the projector; detecting an input for adjusting the reflection direction of a two-axis galvanometer mirror; sending an instruction to reduce output from respective... Agent: Osha Liang L.L.P.

20090122274 - Video projection system: A roll bar for protecting a projection mirror is attached so as to avoid exerting an external force to the projection mirror portion, direct thereto upon a turnover the projection apparatus. Further, in the case of no attachment of the roll bar for protecting the projection mirror portion, the projector... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090122276 - Multi-lamp projection display apparatus: 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 memory in each of the lamp boxes in... Agent: Wolf Greenfield & Sacks, P.C.

20090122277 - Projection lens with exterior stop: The disclosed embodiments relate to a system and method for medium wide-angle projection system. An exemplary embodiment of the present technique comprises an imaging system configured to create an image, a lens having a front surface and a back surface, the lens configured to receive an image on the back... Agent: Fletcher Yoder P.C.

20090122278 - Non-specular folding mirror and a system of using the same: A non-specular reflective optical element comprises a reflective surface. A beam of incident light can be reflected such that the reflective angle may or may not be the same as the incident angle. In an exemplary application of a rear projection system, the non-specular folding mirror is used to project... Agent: Texas Instruments Incorporated

20090122279 - Projector: A projector includes a screen; a reflection unit having at least one curved surface mirror disposed on the projection side of the screen; a bending mirror disposed before the reflection unit on the optical path and disposed on either the non-projection side of the screen or on an extension plane... Agent: Oliff & Berridge, PLC

20090122280 - Electronic device: An electronic device includes: a housing which accommodates a device main body; and a leg which contacts an installation surface on which the housing is installed and changes the projection length projecting from the outside surface of the housing. The leg has a leg main body contacting the installation surface,... Agent: Advantedge Law Group, LLC

20090115969 - System and method employed in projector for protecting eyes: A system employed in a projector for protecting eyes when the projector is in use, includes an initialization module, a light emitting-receiving device, a time-measuring module, a comparison module, and an image-outputting device. The initialization module is configured for initializing a standard time value. The light emitting-receiving device is configured... Agent: PCe Industry, Inc. Att. Steven Reiss

20090115970 - High efficiency compact oled microdisplay projection engine: A compact micro-display engine having improved efficiency for, e.g., projection displays or personal displays. It includes an emissive micro-display without the need for external illumination, a collimation optic plate on top of micro-display and a low F/# projection optics after the collimation optic plate. The collimation optical plate may be... Agent: Jabil Circuit, Inc. C/o Darby & Darby P.C.

20090115971 - Dual-mode projection apparatus and method for locating a light spot in a projected image: A dual-mode projection apparatus has a projection module for projecting an image onto a projection surface. An image sensor module captures images of the projection surface and determines spatial and temporal characteristics of a visible light spot superimposed on the projection surface. A communications module transmits the spatial and temporal... Agent: Curtis A. Vock Attorney At Law

20090115972 - Projection apparatus and cabinet thereof: A cabinet is provided in a projection apparatus including a rectangular screen (200), and an optical engine (300) that projects an image onto a back surface of the screen (200) from a lower side thereof. The cabinet includes a screen frame (100) that holds four sides of the screen (200)... Agent: Birch Stewart Kolasch & Birch

20090115973 - Detecting system and method for color wheel: A detecting system includes a light source, a dichroic prism, a light sensing unit, a processing unit, and a display device. The light source is configured for emitting light to color segments of a color wheel to be checked to generate separated color lights in a sequence according to that... Agent: PCe Industry, Inc. Att. Steven Reiss

20090115974 - High pressure discharge lamp operation device, light source device, and projection type image display device: Provided is a method for lighting a high pressure discharge lamp capable of increasing the life thereof. The lighting method is as follows. When the time elapse after lighting up the discharge lamp is within a predetermined condition (e.g. 5 minutes or less), constant current control is performed if the... Agent: Snell & Wilmer L.L.P. (panasonic)

20090115975 - Image projection apparatus: An image projection apparatus (i.e., a projector), having a light source unit 200, being disposed within an inside of an about box-like housing 100, a light modulation unit 300, and a projection optic unit 400 for projecting the image light from the light modulation unit, enlargedly, wherein the projection optic... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090115976 - Projector with lamp cover lock: A projector has a disassembling lock for preventing the lamp cover from being disassembled when the projector is secured to a ceiling. The disassembling lock includes a sleeve, a latching rod, a stop block, and a coil spring. The sleeve is secured in the projector and has a first sleeve... Agent: PCe Industry, Inc. Att. Steven Reiss