Abstract: A light engine combines light of first, second, and third color ranges using three pentagonal prism elements. Each prism has first and second diagonal surfaces. Each first diagonal surface has a first dichroic treatment and each second diagonal surface has a second dichroic treatment. The prisms are arranged with the first diagonal surface of the first prism juxtaposed with one diagonal surface of the third prism and with the second diagonal surface of the second prism juxtaposed with the other diagonal surface of the third prism. A first light beam of the first color is reflected at a right angle by the first diagonal surfaces, and a second light beam is reflected at a right angle by the second diagonal surfaces. A third light beam of the third color passes unreflected through the surfaces to produce a combined light beam or common output light path.

Abstract: A projector includes: a light emitting device; a light modulation device adapted to modulate a light beam emitted from the light emitting device; and a projection device adapted to project the image formed by the light modulation device, wherein the light emitting device includes a light emitting element formed of a super luminescent diode, and adapted to emit light, and a base supporting the light emitting element with first and second reflecting surfaces to reflect the light emitted from the light emitting element. The light emitting element emits the light from first and second end surfaces. Directions of first and second outgoing light respectively emitted from the first and second end surfaces are opposite to each other. Directions of the first and second reflected light respectively reflected by the first and second reflecting surfaces are the same as each other.

Abstract: A projection display device includes a light source, a reflector, and a fixing portion. The device further includes a first air supply portion and a second air supply portion; a first air drawing portion which separates the cooling air from the first air supply portion into streams of the cooling air to guide one of the streams into an interior of the reflector in a first direction and to guide the other of the streams to the fixing portion in a second direction; and a second air drawing portion which separates the cooling air from the second air supply portion into streams of the cooling air to guide one of the streams into the interior of the reflector in a third direction and to guide the other of the streams to the fixing portion in a fourth direction.

Abstract: An image forming system is described that includes a light source that provides a light beam and an anamorphic refractive optical element. A first outer surface of the anamorphic element faces the light source and includes a toric surface. The light beam is incident upon the first outer face and then an incident surface of the anamorphic element. The anamorphic element directs the light beam to an image forming device. An illumination system is also described where an anamorphic element includes a toric surface and a facet surface.

Abstract: A electronic device that includes an optical assembly containing a projector, an imager, or both is described. The optical assembly may be disposed in an accessory such as a cover for the electronic device, or the electronic device itself. The optical assembly may be attached by a flexible connector or articulated arm that, when extended, positions the optical assembly generally above a plane of an electronic display of the device. The optical assembly may project images onto the electronic display, portions of the cover, or other surfaces. An imager in the optical assembly detects user gestures or other visual inputs to initiate commands on the electronic device.

Abstract: A projector includes: a first solid-state light source device including a first solid-state light source emitting main excitation light, and a fluorescent layer converting the main excitation light to light including a first color light component and a second color light component different from the first color light component, and emitting converted light; a second solid-state light source device including a second solid-state light source emitting a third color light component different from the first and second color light components; a light modulation device modulating the first, second and third color light components in accordance with image information; a projection optical system projecting the modulated light components from the light modulation device as a projection image; and a color light combining optical system combining light emitted from the first solid-state light source device and the third color light component.

Abstract: A method and apparatus for calibrating a color temperature of a projector that creates a light of a desired color by mixing primary lights. The method includes setting target values for the mixed light, measuring color coordinate values for the primary lights, calculating the target brightness values for the primary lights using the target values and the measured color coordinate values, and calibrating the output of the primary lights output from the projector based on the calculated target brightness values.

Abstract: An image displaying apparatus including a light source, a light condenser for condensing light to form a condensed light image, a light mixing element, a reflective image displaying element having plural micro-mirrors for changing an inclination angle of an individual micro-mirror between an on-state and an off-state, an illumination optical system including a condenser lens and a mirror for illumination, and a projection optical system for projecting reflected light from a micro-mirror being at an on-state among plural micro-mirrors constituting the reflective image displaying element, wherein the mirror for illumination is at a position nearest the reflective image displaying element on an optical path from the light mixing element to the reflective image displaying element and a reflection surface of this mirror for illumination is positioned at a side of the reflective image displaying element with respect to a projection lens system constituting a part of the projection optical system.

Abstract: A method of operating an AC mercury lamp and DMD (Digital Micromirror Device) in a projection system, comprising receiving a periodic video frame pulse signal, switching the DMD between successive on and off states during each period of the frame pulse signal, wherein each off state results in a dark interval, and driving the lamp with a signal that is synchronized to the video frame pulse signal so as to alternate between a maintenance pulse level during at least a portion of the dark interval and a plateau level during the on state of the DMD.

Abstract: An image display apparatus includes plural image forming devices and an observation optical system that includes at least a first optical system configured to fold in a first section a luminous flux from a first image forming device by using a plurality of reflective surfaces and to guide the luminous flux from the first image forming device to the exit pupil, and a second optical system configured to fold in a second section a luminous flux from a second image forming device by using a plurality of reflective surfaces and to guide the luminous flux from the second image forming device to the exit pupil, wherein the first section intersects the second section on an axis that directs from one point in the exit pupil to one point in the observation field.

Abstract: Additional power and cooling can be provided for microprojectors by supplemental rechargeable power sources that can be integrated into memory sticks or by expansion cards that can plug into cellphones, PDAs and other portable devices. A docking station for portable devices using microprojectors contains supplemental power, cooling means, addition data/audio/video interfaces, touch screen/optical interface, projection optics, contrast enhancing screens and/or addition optics for video conferencing. Optics can be adapted to the microprojector for better imaging, secured communications, enhanced light sources, low versus high power operation ratios, and contrast enhancing screens.

Abstract: A system comprises means (PL; MI) for projecting an image light beam (ILB) on a projection area (PA) for display of an image (PI) on the projection area (PA), and means (1) for generating an ambient light beam (ALB; ALB1, ALB2) and comprising: an ambient light source (LS; LS1, LS2) for generating ambient light, a collimator (CO) or a light-guide (LG1, LG2) for receiving the ambient light to supply the ambient light beam (ALB; ALB1, ALB2), and a reflector (RF; RF1, RF2) for reflecting the ambient light beam (ALB; ALB1, ALB2) towards the projection area (PA) to obtain an ambient lighting area (ALI) adjacent the image (PI).

Abstract: An enclosure of a dichroic mirror system that synthesizes a plurality of monochromatic laser beams emitted from a laser light source to output synthesized light is a structure having a dichroic mirror system lower enclosure and a dichroic mirror system upper enclosure joined to each other, and includes a light-leakage protecting structure that is formed by a convex portion formed at an end of the dichroic mirror system lower enclosure and a concave portion formed at an end of the dichroic mirror system upper enclosure engaged with each other at a joint therebetween.

Abstract: A light source apparatus includes a short-arc-type mercury lamp, a main reflection mirror, a sub-reflection mirror, and an optical element. The sub-reflection mirror surrounds an opening of the ellipsoid main reflection mirror. The sub-reflection mirror reflects a portion of the light emitted from the lamp toward the main reflection mirror. The light reflected by the sub-reflection mirror is reflected toward the main reflection mirror. The optical element is arranged between a second focal point of the main reflection mirror and the sub-reflection mirror. The light reflected by the main reflection mirror and passes through an opening of the sub-reflection mirror is incident upon an incidence-side face of the optical element. The optical element transmits visible light and to reflect ultraviolet light, while the main reflection mirror transmits infrared light and reflects ultraviolet light and visible light and the sub-reflection mirror reflects ultraviolet light and visible light.

Abstract: A projection type display device includes a image displaying element having image display areas for displaying a plurality of images respectively, a projection optical system having an emitting part for emitting projection light flux to the image display areas of the image displaying element, and a plurality of screens for displaying projected images by the projection light flux transmitted through the image display areas of the image displaying element. In the projection type display device, the image display areas are formed in respective areas in the image displaying element independent of each other. The projected images on the screens correspond to the image display areas, respectively. Each of the screens is arranged in such a position that the each of the screens is not overlapped with shadows of the other screens which are produced since the projection light flux is emitted from the emitting part to the screens.

Abstract: An optical system includes a light source array, a dichroic mirror set, a light converting device and a light guide pipe. The light source array is used for emitting a first homogeneous light. The dichroic mirror set is disposed in a light path of the first homogeneous light and used for reflecting a part of the first homogeneous light to the light guide pipe, transmitting the remaining part of the first homogeneous light to the converting device. The light converting device is disposed in the transmitting light path of the dichroic mirror and used for transferring the first homogeneous light into a second, third homogeneous light. The dichroic mirror is further used for reflecting the second, third homogeneous light to the light guide pipe. The light guide pipe is used for mixing the first, second and third homogeneous light to obtain a white light.

Abstract: A projection apparatus including an illumination system, a light valve, and a color filtering module is provided. The illumination system is capable of emitting an illumination beam. The light valve is disposed in the transmission path of the illumination beam and capable of converting the illumination beam into an image beam. The color filtering module is disposed in the transmission path of the illumination beam between the illumination system and the light valve and includes a plurality of colored filters and a gray filter. The gray filter is capable of reducing the intensity of the illumination beam passing through the gray filter. An image adjustment method is also provided.

Abstract: A projector includes: a storing unit that stores setting data indicating a manual trapezoidal distortion correction system selected out of plural kinds of manual trapezoidal distortion correction systems; an operation unit that generates operation information; an imaging unit that picks up an image of a projection target area and generates a pickup image; an automatic trapezoidal distortion correction unit that performs automatic trapezoidal distortion correction; a projecting unit that projects, after the automatic trapezoidal distortion correction is performed, irrespectively of the manual trapezoidal distortion correction system indicated by the setting data, an adjustment instruction image for urging adjustment of a vertex position of a display planned area of the image in the projection target area; and a manual trapezoidal distortion correction unit that performs manual trapezoidal distortion correction on the basis of operation information indicating an adjustment instruction for the vertex position.

Abstract: An imaging system (200) is configured to reduce perceived speckle (106) in images (201) by introducing angular diversity into consecutively projected images. The imaging system (200) includes one or more laser sources (203) that are configured to produce one or more light beams (215). A light modulator (204) scans these light beams (215) to produce images. A light translation element (206) introduces the angular diversity by physically altering a light reception location (208) on the light modulator (204) between refresh sweeps. To preserve image stability, image data (220) in a memory (218) can be correspondingly shifted.

Abstract: A lighting device includes: a light source which emits light around a light source axis; a reflector which has a plurality of reflection surfaces for reflecting light emitted from the light source; a plurality of converging units each of which is provided for the corresponding reflection surface of the plural reflection surfaces to receive light released from the corresponding reflection surface; and a stacking system which stacks light having passed the plural converging units on a light receiving area wherein each of the plural reflection surfaces is formed by a part of a spheroid having focuses at the position of the corresponding converging unit and the position of the light source, and each focal distance of the plural converging units becomes longer as the distance between the position of the converging unit and the light source axis increases.

Abstract: In accordance with embodiments of the present disclosure, a method for marking an image projected onto a surface includes capturing a second image from the surface, detecting the existence of a marking point in the second image, and modifying the first image by placing a graphic element at a location corresponding to a location of the marking point in the second image.

Abstract: A multimedia player for providing two projection images is provided. The multimedia player for displaying two projection images includes: a first projection unit displaying a first projection image; and a second projection unit displaying a second projection image. The first projection unit includes: a first driving unit controlling an operation of the first projection unit and providing an image signal on the first projection image to be displayed; a first light source unit; a first light modulation device outputting the first projection image by modulating light provided from the light source in response to the image signal of the first projection image; and a first projection lens unit magnifying and projecting an image that is output from the first light modulation device. The structure of the first projection unit is the same as that of the second projection unit. The multimedia player further includes a screen sensing unit sensing a color of an area in which an image is to be displayed.

Abstract: A projector with a laser light source projects an image. In order to reduce the risk for a person to be exposed to harmful levels of laser light, the projector also projects a time-variant alerting image into an alerting region. Alerting region is arranged outside of the projection region. The alerting image is of a wave length visible to the human eye, and of an intensity of eye-safe level.

Abstract: A display system comprising a light source and a plurality of switchable elements, wherein each element is switchable at an element switching frequency in accordance with an element control signal between an “on” state in which light is directed from the light source onto a display, and an “off” state in which light is not directed onto a display. The light source being configured to generate a pulsed light source output at a light source pulse frequency.

Abstract: An image projection system is disclosed. The system comprises a projector, a user input device and a computing device. The micro-mirror based projector projects an image including a cursor on a display plane. The present invention discloses various embodiments for the system and method of adjusting the brightness of the cursor to improve effects of a presentation. According to one embodiment, the brightness of the cursor is adjusted by modifying the on/off time ratio of the mirrors by which the cursor is formed. According to another embodiment, the projector comprises a first and a second micro-mirror array. The second array is dedicated for projecting the cursor image. The brightness of the cursor may be adjusted by changing the number of micro-mirrors by which the cursor is formed from the second array.

Abstract: First and second lamps 1, 2, first and second ellipsoidal mirrors 3, 4, first and second spherical mirrors 5, 6, and a plane mirror 7 are provided. The first spherical mirror 5 is provided on the same side as the first ellipsoidal mirror 3 with respect to the lamp 1, and the second spherical mirror 6 is provided on the opening side of the second ellipsoidal mirror 4 with respect to the second lamp 2, so that they reflect a respective part of light beams emitted from the first and second lamps toward the first and second ellipsoidal mirrors 3, 4. The first and second ellipsoidal mirrors are arranged such that the optical axes of their reflected light beams intersect with each other, so that they condense respective light beams emitted from the first and second lamps and respective light beams reflected at the first and second spherical mirrors 5 and 6.

Abstract: A light source device, includes: an arc tube, and a pair of sealing portions; a reflector; and a sub mirror configured to reflect the light emitted from the arc tube toward the arc tube, and disposed of the other side of the sealing portion in such a manner as to cover a part of the outer surface of the tube spherical portion of the side of the illumination area, the sub mirror include a plurality of reflection members provided with reflection surfaces having different shapes, and the distance between the illumination axis and the outer shape of one of the adjoining reflection members is different from the distance between the illumination axis and the other of the adjoining reflection members.

Abstract: A projector apparatus with multi-light sources and a light coupling module thereof are disclosed. The projector with multi-light sources comprises a light incident region, a light tunnel, a color wheel, a light coupling module, and a plurality of light sources, all disposed in the light incident region. The light coupling module comprises a light coupling device, a light gathering device, and a reflection device. The light sources provide a plurality of light beams, which are substantially coupled into a single light beam by the light coupling device. The single light beam travels through the color wheel and the light tunnel through the light gathering device and light reflection device.

Abstract: A LED light source module and a projection device comprising the same are provided. The LED light source module comprises an optical element assembly, a LED assembly and a compartment structure. The compartment structure extends from at least one side edge of the LED assembly to at least one side edge of the optical element assembly, so that the LED assembly, the optical element assembly and the compartment structure form an enclosed space corporately.

Abstract: A projection apparatus including a light source, a light valve, a light uniforming device, and a first curved-surface reflection device is provided. The light source provides an illumination beam. The light valve is disposed on a transmission path of the illumination beam for converting the illumination beam into an image beam. The light valve has an active surface that substantially has a rectangular contour. The light uniforming device is disposed on the transmission path of the illumination beam and between the light source and the light valve. The first curved-surface reflection device is disposed on the transmission path of the illumination beam and between the light source and the light valve for reflecting the illumination beam to the light valve. A curvature of the first curved-surface reflection device along a first direction is not equal to a curvature of the first curved-surface reflection device along a second direction.

Abstract: A system and method to display a plurality of different images at multiple distinct locations using a single image projector and an image propagation control means to control a propagation pathway from the projector to a display at each location.

Abstract: One aspect of an LED package, which is covered by this disclosure, includes at least two LED emitters located on a substrate wherein each of the at least two LED emitters forms an emitting area. The emitting area is substantially equal to a reflective area of the LED package, and the LED package has an optical axis that is substantially non-parallel to an optical axis of each of the at least two LED emitters.

Abstract: A high resolution 3D projection system having a light source (302) for generating and emitting light, a translucent rotatable drum (308) having differently polarized sections for receiving the light therethrough, a plurality of digital micromirror device imagers (324, 326, 328 and 330) configured to receive and reflect the light transmitted through the drum (308), where a light beam is capable of being passed generally orthogonally through a wall of the drum is disclosed.

Abstract: A display device includes a projector, a Fresnel lens converting a projected light from the projector into a nearly parallelized light, a screen with light reflectivity on which an image by the projected light from the projector is generated, and a retrotransmissive material forming another image of an image located on one side of an element plane in a position in a space on the other side of the element plane such that the image and the other image are symmetric with respect to the element plane. The retrotransmissive material forms an image by a light that has obliquely entered the element plane, such that a position from which the light has obliquely entered the element plane and a position in which the image is formed are symmetric with respect to the element plane, and thereby forms a real image of the image on the screen.

Abstract: An entire-visual-field projection device which projects image information relating to an entire-visual-field image onto a spherical screen to provide the entire-visual-field image to a viewer positioned inside the screen. The projection device is provided with the spherical screen, a pair of projectors which project the entire-visual-field image onto the screen and are arranged opposite each other with the center of the screen therebetween, and a double-convex mirror for projection which reflects luminous fluxes from the projectors toward the screen and is disposed in the vicinity of the center of the screen. A projection luminous flux from one of the projectors is emitted to one of the convex surfaces of the mirror, and that from the other projector to the other convex surface of the mirror.

Abstract: A multipurpose projector is provided with a fiber bundle including a plurality of cores fixedly arranged on an input plane and an output plane, laser beam sources for emitting laser beams having directivities, an optical guide unit for modulating the laser beams emitted from the laser beam sources and guiding the modulated laser beams to the input plane of the fiber bundle, a projection lens for enlarging and projecting the laser beams emerging from the output plane of the fiber bundle to a display space, and a projection angle adjusting mechanism disposed on the side of the output plane of the fiber bundle for adjusting projection angles of the laser beams projected from the projection lens. Thus, the projector can have its projection space freely operated and enlarged to extend its application not only to image display, but also to illumination and decoration with colored light.

Abstract: A light modulator includes: a holding member having a frame disposed around an opening; and a light modulation panel formed in such a way that the edge thereof is held by the frame and the outer surface of the portion corresponding to the opening is flush with the outer surface of the frame or positioned outside the outer surface of the frame.

Abstract: A lighting device that lights a discharge lamp which contains a pair of electrodes and light emission substance including mercury, includes: a first terminal connected with the electrode to which mercury easily adheres, and a second terminal connected with the electrode to which mercury is difficult to adhere; a setting unit which sets AC current supplied to the first and second terminals in a starting period from insulation break down of the discharge lamp until start of discharge between the tips of the pair of the electrodes; and a supplying unit which supplies AC current set by the setting unit to the first and second terminals, wherein the setting unit sets AC current such that the half-cycle electric quantity supplied to the first terminal becomes larger than the half-cycle electric quantity supplied to the second terminal in the initial term of the starting period under the condition in which the first terminal initially operates as cathode, and that the half-cycle electricity quantities supplied to th

Abstract: The lighting unit includes the DMDs (80R), (80G), and (80B). The lighting unit also includes: the prisms (50) and (60) combining the light emitted from the DMDs (80R), (80G), and (80B); and the light modulating optical device (90G). The incident light including the green component light and the yellow component light enters the light modulating optical device (90G). The light modulating optical device (90G) transmits the green component light and changes a transmittance of the yellow component light depending on a change of a molecular state. Light having emitted from the light modulating optical device (90G) enters the DMD (80G), which corresponds to the incident light.

Abstract: In order to produce stress-reduced reflective optical elements (1) for an operating wave length in the soft X-ray and extreme ultraviolet wavelength range, in particular for use in EUV lithography, it is proposed to apply, between substrate (2) and a multilayer system (4) optimized for high reflectivity at the operating wavelength, a stress-reducing multilayer system (6) with the aid of particle-forming particles having an energy of 40 eV or more, preferably 90 eV or more. Resulting reflective optical elements are distinguished by low surface roughness, a low number of periods in the stress-reducing multilayer system and also high ? values of the stress-reducing multilayer system.

Abstract: A light source system for a projection device and a projection device comprising the same are provided. The light source system comprises an optical component assembly and a first light source module. The first light source module has a first light emitting diode (LED) and a first reflection cover. The first LED is configured to generate beams. The first reflection cover has a curved surface to reflect and collect the beams from the first LED into the optical component assembly.

Abstract: Red, green, and blue laser light emitted from laser light sources 1-3 is transformed into substantially parallel beams by collimator lenses 4-6, collected by microlens arrays 7-9, and rendered uniform by rod integrators 10-12, whereupon it is used to illuminate spatial light modulation elements 16-18 and subjected to modulation. The modulated laser light exiting from the spatial light modulation elements 16-18 is recombined using a beam-combining prism 19 and subjected to pixel separation using a birefringent plate 20, which is rotationally driven by a birefringent plate rotary drive unit 26, after which it is projected upon a screen 22 using a projection optical system 21. The birefringent plate 20 spatially separates the modulated laser light using birefringence. When pixels are spatially separated by the birefringent plate, the pixel grid region is made smaller, the distribution of brightness on the screen is rendered uniform, and speckle noise is reduced.

Abstract: LED modules (1R, 1G, 1B) for respectively emitting red, green and blue colors of light, illumination optical systems (2R, 2G, 2B) for guiding light from the LED modules, and a liquid crystal panel (7) for modulating the light from the LED modules guided by the illumination optical systems on the basis of an image signal are placed. The LED modules are provided with respective cooling units connected to the backside thereof through spreaders (11R, 11G, 11B) as thermal conductive members. Only the cooling device for the red LED module (1R) is formed by using a red Peltier device (12) as a thermoelectric element capable of controlling heating and absorbing heat. Efficient temperature control by appropriately using a Peltier device for cooling the plurality of solid light sources that emit colors of light different from each other becomes possible.

Abstract: An image display apparatus includes: a first spatial light modulator (SLM) and a second modulator for modulating a first and a second illumination lights for displaying images; an SLM control unit for generating first control data and second control data for controlling the first and second SLMs respectively in accordance with the first and second control data, wherein each of the first control data and second control data is generated for each of a plurality of sub-frame periods divided from one frame period for displaying the images, and the start timing of one sub-frame period of the first control data is different from the start timing of one sub-frame period of the second control data.

Abstract: Provided is a compact projection display with high throughput. The projection display includes: an illumination unit which irradiates a plurality of single color light beams; a first scanner scanning the plurality of light beams irradiated from the illumination unit along a first direction; a light modulator with a linear array of micro-electromechanical system (MEMS) devices that are arranged parallel to the first direction; an F-? lens disposed between the first scanner and the light modulator and having a first entrance pupil and a second entrance pupil; and a second scanner disposed opposite to the second entrance pupil of the F-? lens and which scans a light beam passing through the second entrance pupil of the F-? lens on a screen along a second direction that is orthogonal to the first direction.

Abstract: A composite optical element is provided. The composite optical element includes a plurality of optical elements, in which at least one of the optical elements is formed of an element modifying an optical path and the other optical elements are bonded to an incident surface and/or exit surface of the element modifying the optical path with a low refractive index material layer in between.

Abstract: A stereoscopic digital image projecting system has a light source system energizable to provide polarized illumination having a first polarization state and a beam splitting system alternately generating first and second light beams having different polarization states from the polarized illumination. A combining system has a polarization beam combiner that combines the first and second light beams into a combined light beam. A spatial light modulator is used to modulate the combined light beam in a manner consistent with stereoscopic image data to form a first modulated image from illumination in the combined light beam having the first polarization state and to form a second modulated image from illumination in the combined light beam having the second polarization state. Projection optics are configured to project the first and second modulated images onto a display surface.

Abstract: A total internal reflection prism comprises at least two subprisms. The at least two subprisms define an airgap of a uniform thickness following a one-dimensional curve.

Abstract: A projection type image display apparatus includes: a light source; an illumination optical system that uniformly illuminates beams, which are emitted from the light source, on a surface of an image modulation element as a primary image plane; and a projection optical system that projects image information of the primary image plane modulated by the image modulation element on a screen as a secondary image plane in an enlarged manner. The projection optical system includes a first optical system having a positive refractive power and including a plurality of transmissive surfaces, and a second optical system having a positive refractive power and including a concave reflective surface. The first optical system has a first reflective surface disposed between any surfaces of the plurality of transmissive surfaces, and a second reflective surface disposed between the first optical system and second optical system.

Abstract: An image system comprises a light valve and an image capturing unit. The light valve comprises an array of individually addressable pixels capable of generating an image. The image capturing unit comprises a detector having an array of detector pixels capable of capturing images. The detector pixels are correlated with the light valve pixels.