Optics: image projectors inventions 11/08

20080291399 - Polarization converting element and projector provided with same: A polarization converting element includes: a main body that is made from a transparent member; an incident section that is provided to the main body, and upon which light generated from a light source is incident; an annular reflecting section that is formed on the periphery of the incident section;... Agent: Oliff & Berridge, PLC

20080291400 - Projection display device: A mirror unit is operable to reflect light from a lens unit for projection in such a manner that, assuming that a light guiding optical system is divided into two areas with respect to a center axis of light combined by a light combining section such as a dichroic prism,... Agent: Mots Law, PLLC

20080291401 - Illuminant module and optical projection device: An illuminant module includes a lamp including a lampwick, a reflector and a guide cap, a lamp holder, a blower, and an axial fan. At least one portion of the lampwick is disposed in the reflector. The guide cap having a guide wall, a first air outlet, and a first... Agent: Jianq Chyun Intellectual Property Office

20080291402 - Image processing system, projector, computer-readable medium, and image processing method: An image processing system and a projector project a calibration image onto a projection target, sense the calibration image to generate sensing information, and generate projection target region information based on the sensing information. The system and projector generate projection area information based on the sensing information, image distortion correction... Agent: Oliff & Berridge, PLC

20080291403 - Image projection apparatus and operation method thereof: An image projection apparatus controls to vary at least one of current, voltage and power of a discharge lamp for each color segment by means of at least two control signals. When the discharge lamp reaches the stable state after turned on, the discharge lamp exhibits the constant voltage characteristic... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080291405 - Projector and control method of projector: A projector includes: an operation unit which receives operation by a user; a projection unit which projects light corresponding to an image signal; and a light intensity control unit which controls light intensity of the light projected by the projection unit. The light intensity control unit controls the light intensity... Agent: Advantedge Law Group, LLC

20080291404 - Projector and control method thereof: Disclosed herein is a projector that can be loaded with lamps of a plurality of kinds, each of a plurality of the lamps loadable into the projector being given a lamp serial code formed by arranging lamp information on the lamp and a check sum in predetermined order, the projector... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080284984 - Projection device with a folded optical path and wire-grid polarizer: A folded projection display system includes a wire-grid polarizer placed immediately behind the system's imaging screen. The display system includes an image projector that projects an image beam containing light of a predetermined linear polarization toward the imaging screen. The wire-grid polarizer reflects the light in the image beam away... Agent: Thorpe North & Western, LLP.

20080284985 - Cooling device and image projection apparatus having the same: A cooling device which prevents ambient persons from being exposed to an unpleasant feeling as much as possible by properly controlling an exhausting direction of the air which is used for cooling and exhausted from a chassis and an image projection apparatus having the cooling device are obtained. The cooing... Agent: Morgan & Finnegan, L.L.P.

20080284986 - Image distortion correcting mechanism of back-projection image display device and back-projection image display device: In a back-projection image display device, image light outputted from a projection device is reflected by a reflection mirror held by a base frame and projected onto the back of a screen, to display an image on the screen. An image distortion correcting mechanism includes adjustment mechanisms that deform the... Agent: Birch Stewart Kolasch & Birch

20080284987 - Image projecting method, projector, and computer program product: The positions of the four corners of the projection area and the positions of the four corners of the projection image are detected on an image captured by a camera unit, and the positions of the four corners of the projection area with respect to the positions of the four... Agent: Edwards Angell Palmer & Dodge LLP

20080284988 - Image projecting apparatus and image projecting method for use in the same: Disclosed herein is an image projecting apparatus, including: a one-dimension type light modulating device for modulating a light in accordance with image information; a projection optical system; and a light deflecting device for deflecting an image light in a direction approximately perpendicular to an extension direction of a one-dimensional image... Agent: Robert J. Depke Lewis T. Steadman

20080278689 - Multiple source high performance stereographic projection system: Multiple source high performance stereographic projection systems are described. One projection system described comprises a first projection channel, a first light source capable of providing light for the first projection channel, and a second light source capable of providing light for the first projection channel, wherein when the projection system... Agent: John S. Pratt, Esq Kilpatrick Stockton, LLP

20080278690 - Polarization conversion element,polarization conversion optical system and image projecting apparatus: A polarization conversion element having plural polarization separation sections and plural phase modulation sections is disclosed. A light flux is separated into transmission light (P polarization) and reflection light (S polarization) by being input to a polarization separation section. The reflection light reflected at the polarization separation section is output... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080278691 - Color mixing rod integrator in a laser-based projector: The present invention provides a system (150) (160), apparatus (100) (200) and method to exploit the high beam quality of a laser light source to lower the cost and decrease the size of a color sequentially operated and laser based projector. Using a color mixing rod integrator (100) (200) (500)... Agent: Philips Intellectual Property & Standards

20080278693 - Illumination optical system and image projection device: An illumination optical system has: a light source, a diffusion member, and a rod integrator, and illuminates an image display surface of a display element. The light source emits an illumination beam having a flat cross section. The diffusion member isotropically diffuses the illumination beam. The rod integrator uniformizes spatial... Agent: Sidley Austin LLP

20080278692 - Method liquefaction of starchcontaining material: The present invention relates to a laser projection system (1) having means for reducing the coherence of a generated laser beam (3) in order to reduce the occurrence of annoying speckle artefacts in images produced by the system. Coherence is reduced by letting the laser beam (3) pass through a... Agent: Philips Intellectual Property & Standards

20080278694 - Color wheel module and projection apparatus using the same: A color wheel module including a motor, a filter unit, and a magnetic sensor is provided. The motor has a rotating unit. An index mark is disposed on the rotating unit. The filter unit is connected to the rotating unit. The magnetic sensor is disposed adjacent to the motor. The... Agent: Jianq Chyun Intellectual Property Office

20080273175 - Method for optical projection of profiles on a work surface of a machine for automatic cutting of flat articles: definition of the profile (3, 3A) on the flat article by the permanent optical projection thereon of a second light beam (5), and contemporary deactivation of the first light beam (4). The invention further proposes a machine for automatic cutting of flat articles with two projectors as required by the... Agent: William J. Sapone Coleman Sudol Sapone P.C.

20080273176 - Display device and method: A reflective or light redirecting device has a base with an overlaying pattern or light redirector. The pattern can be selected from a collection of masks, templates, or reflective appliques. The device is arranged to reflect or redirect light, for example sunlight, in a beam that projects a corresponding design.... Agent: The Law Offices Of Thomas L. Adams

20080273177 - Projection optical system: A projection optical system for projecting, while enlarging, an image formed on an image formation surface onto an image projection surface from an oblique direction relative thereto has at least three optically powered reflective surfaces and a refractive lens surface having a non-rotation-symmetric free-form curved surface and disposed between the... Agent: Sidley Austin LLP

20080273178 - Thin microprojector with switched beam bender and method of operating the same: A video projector includes a reduced size spatial light modulator (400) that spatially modulates light from a light source (502) according to only a portion (e.g., ½) of a video frame at a time. A beam steerer (508, 600, 1600) steers spatially modulated light from the spatial light modulator to... Agent: Motorola, Inc.

20080273179 - Projection system and method for operating a projection system: A method for operating a projection system (1) is described, wherein a brightness level (B1, B2, B3, B4, B5, B6) in an image (IM) is represented by the total length of a number of light switch-on phases within a particular image cycle (VT). A high pressure discharge lamp (2) of... Agent: Philips Intellectual Property & Standards