Abstract: A light integration aparatus for use in a projection device is provided. The light integration apparatus comprises the first integration rod and the second integration rod symmetrically disposed with respect to a symmetric axis. The light emerging ends of the first integration rod and the second integration rod are both disposed towards the symmetric axis. Thus, the light is adapted to be guided through the first integration rod and the second integration rod, and emerge from the light emerging ends to travel parallel to the symmetric axis.

Abstract: A light conducting unit is disposed between a light source and a region which is to be illuminated. In addition, a light conducting unit includes a polygonal prism made from a first medium with a first coefficient of refraction, a first light conducting unit which directs light to be incident upon a first surface of the polygonal prism, and a second light conducting unit upon which light emitted from a second surface of the polygonal prism is incident, wherein the polygonal prism includes a reflective device which reflects light which is incident into the polygonal prism from the first surface towards the second surface, and a second medium with a second coefficient of refraction which is less than the first coefficient of refraction is provided at the first surface and the second surface.

Abstract: An optical system for a digital light projection system is provided. The optical system comprises a plurality of LED arrays, wherein each LED array comprises a plurality of LEDs. The optical system also comprises an optical concentrator element positioned substantially adjacent to each of the LED arrays, wherein each concentrator element totally internally reflects light emitted from the plurality of LEDs within the corresponding LED array so as to provide substantially uniform light at an output surface of each concentrator element, and wherein the concentrator element has a complex conic shape.

Abstract: Methods, devices, and systems are provided for displaying an image using a multi-directional image displaying device in a compact, configurable device having an expansive viewing angle. An image projector projects an image having a plurality of image pixels. A distribution object is aligned with the image projector. The distribution object is utilized to redirect the image pixels projected by the image projector onto one or more display surfaces. As such, in one embodiment, a wide view display of the first image that expands at least the width of a user field of view results from the spreading of the image pixels. A compact housing unit provides support for the image projector and the distribution object. In one embodiment, the multi-directional image displaying device can be adjusted to change the wide view display of the image.

Abstract: A projection optical system for use in an image projection apparatus illuminating an image display panel forming an image in accordance with a modulating signal with illumination light from a light source. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the image display panel. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the image display panel is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected.

Abstract: A lid structure, apparatus and method for displaying graphical information uses beams of coherent light that are emitted in a scanning manner to project the beams of coherent light onto a display surface to form the graphical information on the display surface.

Abstract: A first light source arrangement pattern is defined by: defining segments opposing to each other and arranged at end positions out of three segments in a first unit and three segments in a second unit, as light source arrangement positions; and defining one of three segments in a third unit, at the same position as the segment defined as the light source arrangement position in the first unit, as a light source arrangement position. A second light source pattern is defined by defining segments out of the segments in the first unit, the second unit, and the third unit, at end positions opposite to the segments defined as the light source arrangement positions in the first light source arrangement pattern, as light source arrangement positions. The first light source arrangement pattern and the second light source arrangement pattern are alternately arranged in the vertical direction.

Abstract: An illuminating apparatus includes a polarized light beam splitter, a first polarized light source device, and a second polarized light source device. The first polarized light source device has a first light source device, a first polarized light separation prism, and a first polarization element. The second polarized light source device has a second light source device, a second polarized light separation prism, and a second polarization element. The illuminating light flux having the first polarized light component emitted from the first polarized light source device and illuminating light flux having the second polarized light component emitted from the second polarized light source device are both linear polarized light components and have different polled light axis from each other.

Abstract: A projection apparatus (10) has an LC modulator panel (60) with photoresponsive layer, segmented into at least first, second, and third portions, each spatially separated. An image writing section (120) forms a first, second, or third image within the corresponding portion of the LC modulator panel by scanning successive lines of image writing light to energize the photoresponsive layer (316). The image writing section has at least one grating electromechanical system for modulating incident emission from a narrow-band light source (70) by providing diffracted and non-diffracted orders and a scanning element for directing a line of light thus formed toward the LC modulator panel to energize the photoresponsive layer. An illumination section (130) directs first, second, and third illumination beams for modulation by the respective portions of the LC modulator panel.

Abstract: A projector comprising a first light source, a second light source, a light combining element, a diffuser and an actuator is provided. The first light source provides a first light beam with high coherence. The second light source provides a second light beam with high coherence. The light combining element comprises a first surface, wherein the first and second light beams enter the light combining element, and are combined into a mixed light beam therein. The diffuser is disposed on the first surface of the light combining element, wherein the first and second light beams enter the diffuser. The actuator is connected to the light combining element, wherein the actuator actuates the light combining element to vary locations where the first and second light beams enter the diffuser.

Abstract: A light deflector includes a substrate; a plurality of control members provided at edge parts of the substrate, the control members having upper parts where stoppers are situated; a fulcrum member provided on an upper surface of the substrate, the fulcrum member having a top part; a plate-shaped member movably provided in a space formed by the substrate, the fulcrum member and the stopper, the plate-shaped member having a light reflection area, no fixed end, and a conductive layer; and a plurality of electrodes provided on the substrate, the electrodes facing the conductive layer of the plate-shaped member.

Abstract: A projection type video display apparatus has a lighting system, which comprises a multiplicity of light sources (11, 12) for emitting substantially parallel beams of light, a half-mirror (13), and a total-reflection mirror (14). The half mirror and the total-reflection mirror are arranged to transmit and/or reflect these beams to illuminate substantially the same entire region of an integrator lens (14). As a result, a high-quality image having no unbalanced white or black dolor uniformity can be obtained even when the light sources are used only partially. This arrangement can be obtained using an inexpensive half-mirror and total-reflection mirror. Moreover, there is no need of precisely positioning the mirrors in alignment with a large number of convex lenses constituting the integrator lens. Thus, the projector can be manufactured at low cost.

Abstract: An illumination apparatus includes: a first light source section; a plurality of second light source sections; and an optical axis conversion element which allows a light incident from the first light source section to emit in such a way that an exiting optical axis of the light approximately coincides with an illumination optical axis, and allows lights incident from the plurality of second light source sections to emit in such a way that exiting optical axes of the lights become approximately parallel to the illumination optical axis in positions close to the illumination optical axis.

Abstract: A reflection optical system placed between a light valve 5 and a screen 4, wherein curved surfaces are only three reflection surfaces of first to third mirrors 1 to 3, and satisfies the following: (1) ?L<20 degrees, (2) 25 degrees<?UL<55 degrees, (3) 20 degrees<?M1<55 degrees, (4) 15 degrees<?M2<50 degrees, (5) 8 degrees<?M3<30 degrees, (6) ?L<15 degrees, (7) 30 degrees<?UL and (8) 7.5 degrees<|?F|, where ?L: minimum angle which a light beam of pupil center forms with respect to the enlargement side image surface; ?UL: difference between maximum and minimum angles which a light beam of pupil center forms with respect to the enlargement side image surface; ?M1, ?M2 and ?M3: deviation angles of the light beam of pupil center passing the center of the reduction-side image surface in first to third mirrors 1 to 3; and ?F: reduction-side pupil divergent angle.

Abstract: An illumination system for transforming at least one laser light beam having a non-uniform distribution in a first axis and a second axis to a beam having a substantially uniform distribution in the first axis while preserving the non-uniform distribution in the second axis. The transformed beam may be imaged as a line image onto a one-dimensional light modulation device. The illumination system may comprise a light tunnel having two sides that interact with the at least one laser light beam in the first axis and two sides that do not interact with the light in the second axis.

Abstract: An image displaying apparatus is capable of maintaining the contrast ratios of displayed images even if the f-value of an optical system of the apparatus is lowered to provide bright images, efficiently utilizing a beam from a light source, minimizing the size and weight of the optical system, and being easy to manufacture. The image displaying apparatus includes first to third reflective polarizing plates (120, 121, 122) provided for first to third reflective spatial light modulators (130, 131, 132), respectively. The reflective polarizing plates polarize and separate beams to be injected into the reflective spatial light modulators. In the image displaying apparatus, a color separating optical system has a larger effective diameter than a color composition prism (140).

Abstract: A projector includes a light source system for providing an incident light, a digital micro-mirror device (DMD) module and a projection lens. The digital micro-mirror device module is disposed in the light path of the incident light for receiving and modulating the incident light before reflecting the incident light to form an image light. The projection lens is to receive and project the image light to form an image. The DMD module includes an active area plane and a cover glass. The active area plane has plural digital micro-mirror elements for reflecting the incident light to form an image light. The cover glass is disposed in the light paths of the incident light and image light, and has a first transparent surface and a second transparent surface. An included angle is formed between the extension direction of the first transparent surface and the extension direction of the active area plane.

Abstract: A light source unit includes a mirror tunnel which has a prism-like shape and whose external sides are formed to taper, and a light source which includes a light emitting device and which is disposed on a side of the mirror tunnel. A reflecting mirror is provided at a first end face of the mirror tunnel, and a second end face of the mirror tunnel, that lies on an opposite side from the first end face, is an end face from which light is emitted, and has an area wider than that of the first end face. The light emitting device of the light source includes red LED's, blue LED's and green LED's, and the LED's are disposed on the side of the mirror tunnel such that the LED's of the same color do not lie adjacent to each other in a longitudinal direction of the mirror tunnel and a direction which is at right angles to the longitudinal direction.

Abstract: The ultra-thin rear projection display device described herein includes a wide angle lens system and one or more planar mirrors that are parallel to a screen on which an image is to be displayed. In one embodiment, the screen that has multiple groove angles to provide better illumination than screens with a single groove angle.

Abstract: A projector includes a first light source section a second light source section, a light combining section adapted to combine the first light beam and the second light beam, an adjustment device adapted to adjust a light path of the first light beam and a light path of the second light beam, respectively, in two steps, an homogenizing optical system adapted to equalize the first light beam and the second light beam processed by the light combining section, a light modulation section adapted to modulate the light beam from the homogenizing optical system in accordance with image information, and a projection optical system adapted to project an image beam processed by the light modulation section.

Abstract: A projection apparatus (10) has an LC modulator panel (60) with photoresponsive layer (316), segmented into a first, second, and third portion, each spatially separated. An image writing section (120) forms a first, second, or third image within the corresponding portion of the LC modulator panel by scanning successive lines of image writing light to energize the photoresponsive layer. The image writing section has at least one grating electromechanical system for modulating a narrow-band light source (70) by providing diffracted and non-diffracted orders and a scanning element (98) for directing a line of light toward the LC modulator panel to energize the photoresponsive layer. An illumination section (130) directs the illumination beams for modulation by the LC modulator panel. Polarizing beamsplitter (24r, 24g, 24b), polarize and direct the illumination beams toward the LC modulator panel and directs modulated light toward projection lens (32).

Abstract: Improvement of speckling noise is discussed in which a central light beam received at a double-sided mirror is divided into a plurality of sub-beams. An intensity of these sub-beams decays from a second sub-beam to a last sub-beam of the plurality. Each sub-beam is also separated at the double-sided mirror by at least a first length, such as the coherence length or intrinsic divergence, and reflected toward a display screen. The configuration of the double-sided mirror focuses the sub-beams to converge with a first sub-beam on the display screen at different angles. The decreasing intensity and different angles of impact with the screen decreases the spatial coherence of the display light. The angle diversity and combination of multiple sub-beams having different intensities offers a non-time-averaging means to decrease speckle noise without downgrading the beam quality or display resolution.

Abstract: A light projector includes a light source configured to output a light beam, a display screen configured to display a color image containing pixels, and a color filter positioned between the light source and the projection screen. The light projector also includes a device for sequentially permuting colors of the pixels for a plurality of frames. The device includes at least one of a device for shifting a position of the color filter with respect to the light beam and a device for shifting a path of the light beam that passes through the color filter.

Abstract: A contrast adjustable projector apparatus including a body, a light source, an illumination unit, a lens assembly and a regulation device is disclosed. The light source is disposed in the body for generating light beams. The illumination unit connects the light source and the lens assembly to guide the light beams to project onto the lens assembly. The illumination unit includes a digital micromirror device (DMD) which is controlled by a controller to rotate at a specific angle according to the transmitted signals, thereby projecting the light beams transmitting from the light source as an on-state light, a flat state light or an off-state light. The regulation device is provided at an outer side of the lens assembly to adjustably shield at least a part of flat state light which is incident to a light inlet, in order to the contrast of the light emitted out of the lens assembly.

Abstract: The present invention provides an image deflection correction apparatus which can switch a mode of image deflection correction (stop the image deflection correction) if it is judged that a camera (optical system) is in a pan/tilt operation, in which the determination condition for pan judgment as to whether or not the panning operation is active or the determination condition for tilt judgment as to whether or not the tilting operation is active, which is not satisfied ahead, is loosened, so that the operation is appropriately reflected to the starting motion of image on a photographing screen when the pan/tilt operation is performed in an oblique direction.

Abstract: A display apparatus is provided which can display different text/image information depending on the viewing angle and the viewer, display a high reality three-dimensional image viewable from any direction and realize stereoscopic viewing without glasses or the like. The display apparatus includes a display unit having a view angle-limiting filter on its surface, a rotary mechanism to rotate the display unit and a control unit which implements control so that when the display unit, rotated by the rotary mechanism, is faced to each of plural directions, the display unit displays a different text/image content associated with the direction.

Abstract: A projection assembly includes a dichroic beam splitter having first and second crossed dichroic surfaces, at least one interference type light modulator panel optically coupled to the dichroic beam splitter, and at least one filter at least partially between the light modulator panel and the dichroic beam splitter.

Abstract: A projection display is disclosed. The present invention can eliminate the reflective light on the internal optical surface of the optical system, using the phase plate and linear polarizer, in the color sequential driving of illuminating at least two colors on the single display panel at a random moment. The phase plate converts the incident light from a linearly polarized light to a circularly polarized light, and vice versa. And, the linear polarizer transmits the linearly polarized light of the incident light in the specific direction. Therefore, the present invention prevents the degradation of color purity generated from the mutual intrusion of light of at least two colors, thereby enhancing quality of color image.

Abstract: A projection apparatus comprises a light source for emitting an incident light and a deflectable element for reflecting the incident light. The projection apparatus further includes an electric circuit for applying a voltage to deflect the element and to turn off the voltage used during a period when the light source is turned off.

Abstract: Aspects of the invention can provide an illuminating device and the like capable of efficiently supplying polarized light in a particular oscillation direction and suitable for a projector having a liquid crystal type spatial light modulator. The device can include a light source that supplies light, a collimating optical system that collimates the light from the light source into a substantially parallel light, and a reflecting type polarizing plate that transmits polarized light in a particular oscillation direction in the light from the collimating optical system and reflects polarized light in an oscillation direction different from the particular oscillation direction. The light source can include a reflecting portion that reflects light reflected by the reflecting type polarizing plate and advancing in the direction of the light source toward the collimating optical system.

Abstract: A light recycler for use in color projection display systems. The light recycler redirects light reflected by a color wheel of the projection system to increase the light output of the projection system. The light recycler is capable of setting the desired numerical aperture of the light source beam, as well as providing the desired spatial distribution of light in terms of intensity and angle. This improves the light uniformity and brightness of the image displayed by the projection system, and improves the efficiency of the system. The light recycler includes at least one substantially planar optical element array receiving the non-uniform light from the light source. The optical element array includes an optically transmissive substrate and a plurality of optical micro-elements formed in the substrate. The micro-elements act together to produce an output light beam having a desired cross-sectional area and spatial distribution of light intensity and angle.

Abstract: A multi-resolution digital table display system is provided for integrally displaying an image picture with more than one resolution. The multi-resolution digital table display system includes a table, a peripheral projection device, a foveal projection device, and an image module. For saving space and avoiding affection of user's hand, the peripheral projection device and the foveal projection device required for projecting images are disposed under the table. The image module provides a peripheral image with a first resolution to the peripheral projection device for projecting the same to a projection screen, and provides a foveal image with a second resolution to the foveal projection device for projecting the same to the projecting screen, such that an image picture can be integrally displayed on the projecting screen.

Abstract: A laser projection system is disclosed having reduced apparent speckle. The system includes a laser emitting a first beam on an optical element. The optical element emits a second beam incident on a scanner that scans the beam onto a projection screen. The optical element may be an exit pupil expander, delay plate, or have a locally electrically modulated index of refraction. In other embodiments, the laser has a tunable wavelength distribution that is changed for each frame displayed by the projection system to reduce apparent speckle. In still other embodiments, the angular content of a beam incident on a scanner is modulated to produce a time varying speckle pattern.

Abstract: Described is an optical device for combining multiple light sources in an optical projection system. One embodiment of the optical device includes at least two light sources having first and second wavelengths, and an optical element for substantially diffracting the first and second wavelengths of the two light sources and combining them into a single beam of light.

Abstract: A projection-type image display apparatus using a light emitting diode light source including a compact optical arrangement. The projection-type image display apparatus includes an illumination optical system including a light emitting diode light source to produce light and emit the light produced in one direction, a uniform light illumination unit disposed along a first optical path to change a propagation direction of the light emitted from the illumination optical system and to emit uniform light, a display device to form an image from the light emitted from the uniform light illumination unit, and a projection optical system disposed along a second optical path to enlarge and project the image formed by the display device onto a screen, wherein the first optical path along which the uniform light illumination unit is disposed and the second optical path along which the projection optical system is disposed are parallel or substantially parallel to each other.

Abstract: A slim optical projection system and an image display apparatus employing the same. The optical projection system includes: a relay lens group to produce an intermediate image from an image created by a display and to generate a first distortion in the intermediate image, a projection lens group to enlarge and project the intermediate image that passes through the relay lens group and to generate a second distortion in the projected image, and a reflector to reflect the image enlarged by the projection lens group to a screen at a wide viewing angle. The first and second distortions are used to compensate for a third distortion caused by the reflector.

Abstract: An illumination source includes a number of light emitting diodes (LEDs) operating at a first wavelength. Light from the LEDs illuminates a phosphor material that generates light at a second wavelength. A reflective polarizer transmits light at the second wavelength in a first polarization state and reflects light at the second wavelength in a second polarization state orthogonal to the first polarization state. The light at the second wavelength reflected by the reflective polarizer is directed back towards the phosphor material without an increase in angular range. In some embodiments the LEDs, having a conformal layer of phosphor material, are attached directly to the first surface of a liquid cooled plate. A liquid coolant contacts a second surface of the plate.

Abstract: A projection-type display device 1 including a light source 10, an optical integrator 20, dichroic mirrors 30 and 35, a reflecting mirror 36, a relay optical system 40, parallelizing lenses 50B, 50G and 50R, liquid crystal light valves 60B, 60G and 60R, incident side lenses 70B, 70G and 70R, a light-synthesizing cross dichroic prism 80, a relay lens 90, an emergent side lens 95, a liquid crystal light valve 100 and a projection lens 110, and liquid crystal light valve 100 is provided in the rear stage of liquid crystal light valves 60B, 60G and 60R.

Abstract: Disclosed herein is a display device using a single-panel diffractive light modulator. The display device includes a light source unit, a condensing unit, an illumination unit, a diffractive light modulator, a projection unit, a filter unit, and a distortion correcting means.

Abstract: A spatial light modulator is disclosed, along with methods for making such a modulator. The spatial light modulator comprises an array of micromirrors each having a hinge and a micromirror plate held via a hinge on a substrate, the micromirror plate being attached to the hinge such that the micromirror plate can rotate along a rotation axis and the hinge structure is located between the micromirror plate and the light source. The mirror plate is formed between the hinge and the substrate on which the hinge is formed. As a result, the hinge is exposed to the incident light during the operation.

Abstract: Disclosed herein is an illumination system for use in display systems employing spatial light modulators. The illumination system comprises a fastening mechanism for securing the bonding of the walls of the light integrator of the illumination system. A heat dissipation mechanism can be alternatively provided for reducing the temperature of the illumination system by dissipating the heat thereof.

Abstract: An image projection system is provided that includes a projector configured to generate a visible projected image, a screen having an interior surface enclosing a three-dimensional space, and a reflector configured to receive the visible projected image from the projector and to reflect the visible image on the interior surface of the screen, the reflector having an aspherical reflective surface that adapts the visible image from the projector for display on the interior surface of the screen, ideally without distortion and without using software warping, to provide complete coverage of the interior surface of the screen.

Abstract: A reflection-type laser projector (100) projects modulated laser beams outputted from a laser projection unit (40), on a screen, wherein a reflector (112) as a constituent of the screen (110) has reflection characteristics of reflecting, among the incident light, only laser beams of three colors of red, blue, and green, which are projected from the laser projection unit (40) and light in the neighboring wavelength band, and transmitting light in other wavelength bands, thereby preventing pictures on the screen (110) from becoming hard to be seen due to effects of indoor illumination or light from outdoors.

Abstract: A spatial light modulator comprises an array of micromirror devices each of which has a reflective and deflectable mirror plates. The mirror plates are moved between an ON and OFF state during operation, wherein the OFF state is a state wherein the mirror plate is not parallel to the substrate on which the mirror plate is formed. The micromirror device may have an ON state stopper for limiting the rotation of the mirror plate at the ON state angle, but does not have an OFF state stopper. The non-zero OFF state is achieved by attaching the mirror plate to a deformable hinge held by a hinge support that is curved at the natural resting state.

Abstract: A projector projecting several images simultaneously is provided. The projector includes a main body having a first opening and a second opening, and an optical system disposed in the main body and projecting a first image through the first opening and a second image through the second opening. The optical system includes a laser source comprising a plurality of mono laser sources, and a first reflector with a first reflective surface and a second reflective surface corresponding to the first opening and the second opening.

Abstract: A display apparatus displaying an image includes a light source, a light valve, a light cross-section converter and a light scanning mechanism. The light valve has a screen formed of a plurality of pixels. The light cross-section converter converts light emitted from the light source into illumination light having a cross section enough to illuminate at least one pixel at a time. The light scanning mechanism controls a direction of travel of the illumination light in such a way that the illumination light scans the plurality of pixels. The light scanning mechanism controls at least one of sequence, speed, and number of times of scanning where the illumination light scans the plurality of pixels, so that a desired profile of distribution of illuminance is obtained over an entire surface of the screen for a time period not longer than one frame time of an image.

Abstract: A display optical system includes a light-source unit, a first optical unit which collects a light beam from the light-source unit, a scanning member which scans the light beam from the first optical unit, and a second optical unit which focuses the light beam scanned by the scanning member on about a scanning surface. An optical axis, defined by an optical path along which a light ray travels from the center of the scanning member to the center of the scanning surface via the second optical unit, intersects itself. In addition, the second optical unit includes two reflective mirrors having positive optical powers.

Abstract: An image projection apparatus. The image projection apparatus comprises a light source and LCD panel. The LCD panel comprises a plurality of pixels and color filters thereon. Light from the light source is projected to the pixels along an irradiative path and the LCD panel selectively reflects the projected light in accordance with an image signal along a projective path, wherein an angle between the irradiative and projective paths exceeds 0°.

Abstract: Projection assemblies are provided herein for use in a display system. According to one exemplary embodiment, the projection assembly includes an illumination source and a plurality of co-planar modulator panels. A method of modulating light is also provided herein that includes generating multi-component light, splitting the multi-component light into a plurality of component beams, and modulating the component beams with a plurality of co-planar modulator panels to form a plurality of sub-images.

Abstract: An absorptive layer is added to an image display system. The absorptive layer is selected to compensate for tint in a black state of a displayed image. In a Liquid Crystal On Silicon (LCOS) based light engine, blue wavelengths may cause a predominate tint in black portions of an image (or an entirely black image is tinted blue), and the absorptive layer is calculated to absorb an amount of blue equivalent to the tint. The absorptive layer is, for example, an unbalanced magenta dichroic, or a yellow filter. The yellow filter may be placed at any point in the light chain, including input/output of a kernel, input/output of a projection lens, or portions of a light engine or display screen. An unbalanced magenta may be constructed by adding a yellow filter to an existing magenta dichroic in the kernel design.