Abstract: A vision system 10 which allows images of a vehicular ambient environment 52 to be selectively acquired and displayed upon a display portion 14. The system 10 may be operatively used within vehicle 12 and may be selectively removed from the vehicle 12 and deployed within the environment 52. Further, display portion 14 is adapted to selectively acquire and display images from an entertainment type device or DVD type player 38 and/or other images from a wide variety of other sources, thereby further increasing the overall utility of the vision system 10.

Abstract: An image projection system includes projection means for projecting an image on a transmission type screen from a rear surface side of the screen, standard image information generating means for generating standard image information of a standard image, image capturing means for capturing an image on the rear surface of the screen from an inside of a casing in which the projection means is housed, the image capturing means capturing the standard image projected onto the screen from the projection means, which receives the standard image information from the standard image information generating means, removing means for removing influences of external light from the standard image projected from the projection means onto the screen, correction value computing means for computing a correction value on the basis of image information of the standard image from which the influences of the external light are removed by the removing means, correction value storage means for storing the correction value information

Abstract: The present invention relates to an apparatus for compensating an engine location for a projection monitor in horizontal and vertical directions, as well as the angle of the engine, so that it is possible to accurately compensate the location of the engine. The apparatus includes a base, a wedge plate fixed on the base, a mounting plate movably fixed on the wedge plate in horizontal and vertical directions and having a circular mounting groove on a center portion of the same, and a stage having a circular support base at a lower portion of the same. The circular support base is rotatably mounted in the circular mounting groove of the mounting plate, an engine is mounted on the stage, and a retainer prevents escape of the circular support base of the stage from the mounting groove while facilitating rotation of the support base and fixing of same at the rotated position.

Abstract: An optical image projector is provided with: a light source, an optical integrator which converges the light from the light source into a number of secondary light sources, a separator which separates each light ray from the secondary light sources into a plurality of color component rays, an optical image generator which generates a plurality of optical images utilizing separated color component rays, an image combiner which combines the plurality of optical images into a single optical image, and an optical system provided between the optical integrator and the image combiner such that the most intensive light rays strike the image combiner at a predetermined incident angle.

Abstract: An LCD projector (K1) comprising: a power source (20); an image data source (90) for producing an image data; a light source (30) which is able to provide different levels of power; an LCD panel (50) for modifying a light ray from the light source (30) in accordance with said image data to produce light rays of an image; a projecting lens (60) for projecting the light rays from the LCD panel (50) onto a screen (70) through enlargement; a control circuit (81) for controlling an output of the power source (20) so as to selectively set an output power: and a correcting circuit (100) for correcting an image data before being supplied to the LCD panel (50) so as to compensate the disturbance of the white balance caused by the change of the power of the light source (30).

Abstract: A projection system employs a convex reflecting mirror to disperse a projected image onto the inner surface of a screen enclosing a spherical or other three-dimensional space. When the screen is a spherical, translucent rear-projection screen, the projection system produces a display of substantially spherical form viewable from outside the enclosed space. When the screen is opaque and of spherical or other three-dimensional form, the projection system produces a three-dimensional image surrounding a viewer.

Abstract: A light source used for projection displays that produces more light of a particular color relative to one or more other colors can be operated in a way to increase the performance of the overall optical system. A first color component that is produced in a lesser amount, may be separated out from the light and discarded while the other light components may be modulated. A separate light source may generate light of the first color that is modulated and combined with the previously modulated color components.

Abstract: A rear projection imaging system includes a light collimator, a curved turning mirror and a projector source. The projector source is operable to anamorphically project an image along a projection path that includes optics, such as a cylindrical lens. The optics imposes a first Scheimpflug condition on the system. The projection path proceeds onto the light collimator, but first reflects from the curved turning mirror. The curved turning mirror imposes a second Scheimpflug condition on the system.

Abstract: An illuminating apparatus includes a condensing optical system for converting light from a light source into convergent light, a first convex lens array for receiving the convergent light, and a collimating optical system for making a plurality of light beams from the first convex lens array parallel to one another. In addition, a polarization converting element array individually converts the plurality of light beams from the collimating optical system into polarized lights.

Abstract: A fixed image projection system that can project an image for a short or long period of time without damage to the film. The system is comprised of a light source having a halogen lamp and a cold coated reflector detachably mounted on a housing having film guides or rails for receiving a film frame. The housing includes a plurality of whisper fans that draw cool air into the housing and expel it from the opposite sides of the housing to maintain a relatively cool temperature at the film frame. Preferably, the fans have a dual speed control to allow a higher speed as an option. A lens barrel is detachably supported on the opposite side of the housing from the light source and includes movable lenses to focus the image. Images may be fed into the system on a film frame one at a time, or by motorized film canisters that allow forward or backward advancement to a selected image on a roll containing multiple images.

Abstract: An image projection display system is provided which utilizes an off-axis illumination configuration. A beam splitter is configured to direct a first light beam along a first optical path toward reflective imaging devices adapted to direct a second light beam along a second optical path to produce an image to be projected. Polarizing devices are interposed between the beam splitter and each imaging device, with the polarizing devices configured to allow passage of a first polarized component of the light beam while blocking passage of a second polarized component of the light beam. The display system provides a high contrast ratio and degree of brightness which significantly improves the final image quality projected to a display screen.

Abstract: A light pipe is designed for a projector system. The light pipe gathers the light from a light source and guides the gathered light to an image device in the projector system. The area of the exit pupil of the light pipe is smaller than the area of the entrance pupil, and the shape of the exit pupil is scaled from that of the entrance pupil. This improves the light gathering efficiency of the light pipe.

Abstract: A field sequential color projection display system, which has high brightness, high accuracy and compact size, and is light and energy saving. The field sequential color projection system comprises: a field sequential beam splitting/combining light valve module including three light valves, which can be controlled by applied energy field, for outputting polarized light of three primary colors in time sequence; a frame sequential display module for respectively displaying frames of three primary colors corresponding to the polarized light of three primary colors output in time sequence, wherein the polarized light passes through the frame sequential display module; a projection lens module for projecting the polarized light passing through the frame sequential display module onto a screen to produce a full color image.

Abstract: A front projection display system that integrates an optical engine, having control and power supply electronics, and a dedicated projection screen to provide a compact video display device. The projection engine is coupled to a high gain projection screen, having an optimized reflection pattern to give optimum optical performance in ambient H& and viewing angle sensitive environments. Components of the projection engine are modularly placed in a retractable arm pivotally connected to the screen. The arm offers precise registration to the screen apparatus and thus repeatably precisely aligns optically and mechanically to the screen. The projection wall system has an open projection position and a closed storage position. Use of a radically offset projection head having matching keystone correction features allows the arm to protrude above the head of the presenter and offer a sharp and unobtrusive projection zone.

Abstract: The invention discloses a solid rod dust-proof structure for projecting apparatuses. The solid rod includes an incident-beam surface and an outgoing-beam surface. The dust-proof structure includes: a housing provided with a first chamber and a second chamber connecting each other wherein the cross section of the second chamber is greater than that of the first chamber. The first chamber contains the solid rod, and a stopping portion is installed on the opposite end of the second chamber for stopping the solid rod; and a dust-proof plate being a transparent plate is contained in the second chamber to completely cover the outgoing-beam surface of the solid rod. Using the above structure, the outgoing-beam surface of the solid rod can be completely covered by the transparent dust-proof plate so that the structure is free from dust and the light transmitting through the outgoing-beam surface will not be blocked.

Abstract: An integrated front projection display system having a planar projection screen formed on a front surface of a rigid frame, the screen including means for reflecting light from the screen in a preselected spatial distribution. A movable arm is hingedly connected at a first end to the rigid frame, the arm being movable between a storage position and a projection position, the arm further comprising means for moving the arm between said storage and projection positions and for retaining the arm at each of said positions. A projection head is mounted on a second end of the movable arm such that it does not substantially obstruct the view of the projection screen when the arm is in the projection position.

Abstract: A projection-type display device which is used in a projector device for projecting optical images spatially modulated by reflection-type liquid crystal panels onto a screen to display an image, wherein a wavelength separation mirror is arranged so that an angle exhibited by an optical axis of light incident on the wavelength separation mirror and the optical axis of reflected light becomes smaller than 90 degrees or polarization filters or polarization separation elements are arranged on an incident facet side or an emission facet side of optical separation elements.

Abstract: A light projection engine uses a wide angle reflecting polarizer material (preferably 3M DBEF brand double brightness enhancement filter) as a polarizing beamsplitter to direct polarized light to beam splitter/combiner (such as an X-cube dichroic reflector). The beam splitter/combiner then splits the directed polarized light into separate reflective LCD panels acting as light valves. The LCD panels alter the polarity of the incident light from 0 degrees up to 90 degrees to control which light is passes from the wide angle reflecting polarizer back towards the light source and which light has the necessary polarization change to allow it to pass from the wide angle reflecting polarizer to the lens system. After reflecting off of the LCD panels, the light goes back through the X-cube dichroic reflector, where it is recombined.

Abstract: A projection display unit which has a light source, a reflecting mirror for reflecting a light pencil from the light source, a first multilens array for dividing a light pencil gathered by the reflecting mirror into a plurality of light pencils, a second multilens array for forming an image of the first multilens array, a polarization conversion element for converting light pencils in an irregular polarization state into linearly polarized light, a condenser having positive power for superposing the light pencils provided through the multilens array, a collimator lens having positive power for correcting the angle of a light beam, a display element for forming an image by electric modulation, a projection lens for enlarging and projecting the image formed on the display element, and a correction lens being disposed between the condenser and the collimator lens for correcting the light pencil.

Abstract: A projection display apparatus comprises a modulator, an analyzer, and projecting optical system. The modulator includes two-dimensionally arrayed pixel units and it modulates an incident light and emits the modulated light. The analyzer analyzes the emitted light from the modulator. The projection optical system projects the analyzed light from the analyzer. The analyzer includes a polarized beam splitter having a pair of prisms and an adhesive layer held between the pair of prisms. The difference in thickness between thin and thick portions of the adhesive layer is set equal to a predetermined value or less, based on a pixel pitch of the modulator.