Abstract: A projection system contains an illumination system having at least a first source of incoherent light capable of generating light in a first wavelength range. The illumination system also includes a body containing a fluorescent material that emits light in a second wavelength range, different from the first wavelength range, when illuminated by light in the first wavelength range. The system further includes at least a second fluorescent material that absorbs light in at least one of the first and second wavelength ranges, and emits light in a third wavelength range. The body has an extraction area, and at least some of the light in either the second or third wavelength ranges is internally reflected within the body to the extraction area. Light from the extraction area illuminates at least one image-forming device. Image light from the image-forming device is projected by a projection lens unit onto a screen.

Abstract: A method for controlling a lighting device that consists of at least a lighting source, a color sequential device and a single light valve consisting of an array of light processing elements that are controlled by bits, the method comprising the steps of emitting a light beam with said light source, filtering said light beam by said color sequential device to achieve a colored light beam and processing said colored light beam with a bit depth of less than 16.

Abstract: A color wheel module and an optical engine comprising the same are disclosed. The optical engine comprises a frame and a color wheel module, wherein the color wheel module comprises a color wheel, a connecting device, and a supporting chassis. The color wheel connects to the supporting chassis. The supporting chassis comprises a first fixing base and a second fixing base, wherein the connecting device connects the first fixing base and the second fixing base to the frame. In view of the center of the color wheel, the first fixing base is disposed opposite to or at an angle with the second fixing base.

Abstract: Disclosed is a color wheel apparatus for a DLP type display device having a color wheel unit, which has a color filter and a rotation part for supporting the color filter and rotating integrally with the color filter; a color wheel supporter for rotatably supporting the color wheel unit; a sensor having a light emitter provided in the color wheel supporter and emitting light to the rotation part, and a light receiver to receive the light reflected from the rotation part; and an index part patterned on a predetermined region of a circumference of the rotation part to irregularly reflect the light emitted from the light emitter.

Abstract: A two-panel projection display system includes a color wheel having color filter segments that transmit light having a secondary color, namely cyan, magenta, and yellow, made up of two primary colors. A primary color separator, such as a second color wheel, a transflective dichroic beamsplitter, or a color-sensitive polarizing switch separates the secondary color beam into a first polarized primary color beam and a second polarized primary color beam, which are directed to first and second imager panels. A beam combiner combines the first polarized primary color beam from the first imager and the second polarized primary color beam from the second imager to form a projection beam. Accordingly, any two primary colors can be imaged at the same time enabling the system to be white point balanced.

Abstract: There is disclosed a pigment dispersant comprises the compound represented by the following formula (I) or a metal salt, ammonium salt, amine salt or alkylammoniumchloride salt thereof. Also disclosed are a colored composition for CF, a process for the fabrication of a CF, the color filter fabricated by the process, an image display device including the color filter, and an information communication equipment including the image display device.

Abstract: A multiparameter light is disclosed, which incorporates an LED (light emitting diode) tracking ring surrounding a main output lens. The LED tracking ring is capable of additive color mixing and in turn can simulate the color of the main projected light projecting from the main output aperture or output lens of the multiparameter light.

Abstract: A light source device includes: a plurality of light emitting elements that emit laser light; and a wavelength selective element that includes a light selective region functioning as a resonator mirror of the light emitting element by selecting light of predetermined selective wavelength from the laser light emitted from one of the light emitting elements and reflecting the selected light toward the light emitting element while allowing the remaining laser light to pass therethrough, and a base member having a plurality of the light selective regions so that the wavelengths of the light selected by the light selective regions are different from each other.

Abstract: The invention provides a three-dimensional image projecting apparatus. The three-dimensional image projecting apparatus comprises a light signal generator, a filter device, a focusing device and a reflecting device. The light signal generator is used for generating a projection light signal. The filter device filters the projection light signal for generating a set of polarized light signal. The focusing device receives the set of polarized light signal for generating a set of focusing light signal. The reflecting device receives the set of focusing light signal for generating a set of reflected light signal.

Abstract: A projection apparatus (10) has an illumination section with a light source (20) providing a substantially unpolarized illumination beam of multiple wavelengths. A multiple wavelength polarizer polarizes the substantially unpolarized illumination beam to provide a substantially polarized illumination beam of multiple wavelengths. A uniformizer conditions the substantially polarized illumination beam of multiple wavelengths to provide a uniformized polarized beam of multiple wavelengths. A color scrolling element provides a repeating, scrolled sequence of colors from a set of colors, thereby providing first, second, and third component wavelength illumination.

Abstract: A light beam projector has a light source and a reflector arranged to have light generated by the light source converge into a light beam. The reflector has a hollow curved surface with a focal point where the light source is positioned, and a filter able to change the color of the light beam based on the angle of incidence of the beam on the filter. The filter has a plurality of filter elements arranged by sectors to form a diaphragm between the light source and the light beam outlet from the projector. In order to change the angle of incidence of the light beam on the filter elements, the sectors are able to rotate on their axes from a closed position, in which they fully intercept the light beam, to an open position, in which they do not intercept the light beam, as well as to all intermediate positions. The light beam projector has at least two filtering systems, one including at least one of the diaphragms, placed one after the other along the path of the light beam.

Abstract: A projector includes an illumination device, a color separation system, a light combining system, a projection system, and an optical adjustment portion. The color separation system separates the light emitted from the illumination device into blue light, red light, and green light. The light combining system can have a first dichroic filter reflecting one of blue light or red light, and a second dichroic filter reflecting green light which are placed in a crossed state and can combine image lights of respective colors exiting from the first through third light modulation devices. The projection system can project a combined light exiting from the light combining system while correcting chromatic aberrations of magnification of blue light and red light with respect to green light. The optical adjustment portion can adjust a size of an image light corresponding to the green light of the combined light exiting from the light combining system.

Abstract: An image compensation system, method and medium that can reduce the amount of computation required for image compensation.

Abstract: An light emitting apparatus which illuminates an illumination area has a first light source which emits a first light, a second light source which emits a second light, a wheel which is provided with a transmission filter area which transmits the first light, and a reflection area which reflects the second light, a wheel driving unit which controls a rotation of the wheel, and drives the wheel, a light emitting optical unit which leads the first light which transmits the transmission filter area, or the second light which is reflected by the reflection area to the illumination area, in which the light which is led to the illumination area by the light emitting optical unit is at least two colors of light which are successively changed over in the time series.

Abstract: An apparatus includes an electromagnetic radiation source, a reflector about the source having an aperture and a curved filter at least partially across the aperture.

Abstract: According to one embodiment, a projection system includes a color wheel operable to filter light into a passed component and a reflected component. The projection system also includes a digital micromirror device comprising a plurality of micromirrors each operable to receive the passed component and the reflected component. Each micromirror is selectively positionable to direct, at approximately the same time, the passed component and the reflected component to desired locations. The projection system also includes an optical system operable to direct the passed component and the reflected component from the color wheel to the digital micromirror device at approximately the same time.

Abstract: The invention relates to a projection device for projecting an image, comprising an illumination means (1) having an entrance (13) for entering light from a light source, a polarization-selective mirror (3) for transmitting a first polarization component (42) of the light to a display panel (4) and reflecting a second component (43) back to the illumination means (1), and a display panel (4) for selecting colour components of the first polarization component for projection at a projection means (7). The display panel comprises a dichroic filter means (5) for filtering colour components of the first polarization component (42) and a controllable reflective means (6) for changing the state of polarization of the filtered colour components depending on a control signal and for reflecting the filtered colour components back to the polarization-selective mirror (3).

Abstract: A projection display may use a color wheel having radially displaced regions of different colors. As a result, at any instance of time on a spatial light modulator in a projection display, three vertically displaced segments may be utilized, each of which is exposed to a different color at any instant of time. Over time, each of the vertically displaced segments may be exposed successively to each of the three primary colors. At any instance of time, the spatial light modulator has an upper region exposed to one color, an intermediate region exposed to another color, and a lower region exposed to still another color. As a result, relatively little light is lost, which may enable brighter reduced-panel display systems using lower power light sources.

Abstract: An object of the present invention is to obtain color filters having a high contrast, a high color purity and an improved transmittance for blue color, and a display using the color filters. In the present invention, there is used a colored composition for color filter comprising at least one coloring agent, a base polymer and at least one solvent, said base polymer containing a polyamicacid whose light transmittance decreases by 2% or less in the visible region (wavelength: 400 nm to 800 nm).

Abstract: A projection-type image displaying apparatus includes: a first color wheel for splitting a light ray from a light source into colored light rays according to color transmission characteristics by the wheel being rotated; a second color wheel for further splitting the colored light rays from the first color wheel by the wheel being rotated; a reflection display device for reflecting, while modulating or switching the light rays transmitted through the second color wheel in synchronization with image signals from an image signal inputting unit, and varying phase of the color wheels in accordance with the changing picture quality; and a reflection drive control unit for controlling the driving of the reflection display device.

Abstract: This invention provides a method of operating a projection system wherein light emitted from a high-pressure discharge lamp being lit with d.c. lamp current is passed through color segments of a color filter sequentially and then reflected by an optical element to project an image on a screen, the color segments of the color filter including red, green and blue color segments and a color segment comprising a green ND filter having a relatively low lightness. The method includes making lower a crest value of the d.c. lamp current fed to the high-pressure discharge lamp for a first illumination period during which the color segment comprising the green ND filter is illuminated than a crest value of the d.c. lamp current fed to the high-pressure discharge lamp for a second illumination period during which any one of the other color segments is illuminated, in synchronism with the first illumination period.

Abstract: A scrolling colour projection system comprising a lamp (4) with a pulsed drive current (20) and a colour scanner (6, 8a, 8b, 8c, 9) for generating a light beam (5b) with a plurality of scrolling colour fields, which is arranged to illuminate a display device (3) to produce a projection of an image generated by the display device. The system further includes a filtering element (31) arranged in the light path between the lamp and the projected image, and the transmission of the filtering element (31) is synchronized with the lamp current so as to cancel an intensity peak in the lamp flux. The filtering element thus effectively removes the impact of the current pulse on the light intensity, resulting in a constant intensity in the projected image, and avoiding any interference patterns.

Abstract: A projection system for forming an image, comprising a light source generating light beam; a color wheel used for performing color separation on the light beam of the light source, comprising a motor having a shaft, a carrier pivoted to the shaft of the motor, and a plurality of color filters fixedly disposed at the periphery of the carrier to form at least one gap; and a digital micromirror element used for reflecting the performed filtered light beams of the light source from the color wheel to form the image.

Abstract: The disclosed embodiments relate to a system and method for generating images. There is provided a method comprising directing light through a projecting lens (28) at a first pixel position (60a) on a screen (32), and shifting the projecting lens (28) such that the light is directed on at a second pixel position (66) on the screen (32), wherein the second pixel position (66) is diagonally offset from the first pixel position (60a).

Abstract: A prism assembly is provided. The prism assembly comprises a first prism component having a triangular cross-section along an optical path, a second prism component having a first quadrilateral cross-section along the optical path, a third prism component having a second quadrilateral cross-section along the optical path, a first dichroic interface between the first and second prism components and along the third prism component and configured to reflect a first range of wavelengths of the light, and a second dichroic interface between the first and third prism components and along the second prism component and configured to reflect a second range of wavelengths of the light.

Abstract: A scrolling color projection system, comprising a pulsed lamp (4) and a color scanner (6, 8a, 8b, 8c, 9) for generating a light beam (5b) with a plurality of scrolling color fields, arranged to illuminate a display device (1, 3) to produce a projection of an image generated by the display device, wherein the frequency of the lamp is controlled so as to be related to the frame rate of the display device. By controlling the lamp frequency in relation to the frame rate, a generated interference pattern can be controlled to be distributed over several frame periods and over the entire height of the display. In particular, the pattern can be controlled in such a way that it is not perceptible to the human eye.

Abstract: A projection display system includes a projection lens assembly that has multiple projection lens elements that are configured to receive light imparted with display information by a pixelated display device. The projection lens elements project the light toward a display screen. A pixel-shifting element is included within the projection lens assembly to cyclically shift between at least two positions within the projection lens assembly to form at a display screen at least two interlaced arrays of pixels. An electro-mechanical transducer is coupled to the pixel-shifting element to impart on it the cyclic shifting between positions.

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 color wheel for use in projector systems comprises a disc shaped hub, rotatable around a central axis and color filter segments arranged radially to said central axis and affixed to said hub. This color ring is arranged concentrically with respect to said axis and said segments' contour comprising an outer arc, an inner arc and two radial parts. Each of the radial parts comprises a recess arranged such that during assembly of said segments pairs of neighboring recesses form a hole which again engages in a corresponding peg on the hub in a form fitting manner.

Abstract: A conductive color filter includes a layer of carbon nanotubes covered by a colored polymeric resin binder.

Abstract: The present invention includes a light source which emits a plurality of lights having different wavelength areas, a plurality of image forming devices which are arranged on respective optical paths for the lights emitted by the light source and which are irradiated with the lights to form images via the lights, magnifying devices which process and magnify the respective images formed by the image forming devices to form magnified images, synthesizing devices placed on respective optical paths for the lights via which the magnified images are transmitted, the synthesizing devices superimposing the lights on one another to synthesize the magnified images together to form a synthesized image, and a projection lens placed on an optical path for the light formed by the synthesizing device to project the light.

Abstract: A projection device comprises a color wheel module, wherein, the color wheel can be detached from the color wheel module. The color wheel module can be detached from the body of the projection device, so that users can conveniently change, clean or maintain the color wheel as desired.

Abstract: The disclosed embodiments relate to a system and method for projecting video onto a screen. A video unit (10) may comprise a color wheel (14), a light source (12) configured to project light through the color wheel (14) during a spoke time, and a digital micromirror device (18) configured to reflect the projected light (30) onto a screen (26). The method may comprise the acts of shining a generally white light (28) through a region on a color wheel (14) to create a colored light (30), the region comprising two color filters, reflecting the colored light (30) off of a micromirror disposed on a digital micromirror device (18), and projecting the reflected colored light (34) onto a screen (26).

Abstract: The invention provides a display device and a projector that can improve display performance with a simple structure without accompanying the enlargement of the device. The display device of the invention can include an illumination system capable of outputting a plurality of primary color light components having different luminescent colors and liquid crystal light valves for modulating the primary color light components output from the illumination system, and the illumination system can adjust the emission spectra of the primary color light components. A light-emitting device of each light controls outputs therefrom independently.

Abstract: A light tunnel with a gradient filter layer includes a light tunnel body and a gradient filter layer. In this case, the gradient filter layer is disposed at a light emerging side. The transmission rate at the central area of the gradient filter layer is smaller than the transmission rate at the edge area of the gradient filter layer.

Abstract: A projector has a function to suppress unnecessary radiation (EMI) from a digital substrate even in a narrow space. To this end, the projector includes an input/output substrate arranged at the upper portion of the rear side of the digital substrate, being approximately in parallel to the bottom surface of the case by using a metal frame, and a shielding plate having a shielding surface with an approximately rectangular cross section, so as to cover a device mount surface of the digital substrate and at the same time, contact the shielding plate and the frame.

Abstract: A display system is configured to produce a color image formed of a plurality of differently colored images and may include at least one light source that directs light along an optical path, and at least one filter having a given optical filter characteristic. The display system may be selectively operable in a first state in which the optical path does not pass through a first filter during production of the plurality of differently colored images to form a color image having a first optical characteristic, and in a second state in which the optical path passes through the first filter during production of the plurality of differently colored images to form a color image having a second optical characteristic different than the first optical characteristic.

Abstract: A projector which projects an image on a projection plane includes a projection mechanism having a first projection mode in which the image is projected on the projection plane by giving priority to color reproducibility and a second projection mode in which the image is projected on the projection plane by giving priority to brightness. The projector also includes a central processing unit. The central processing unit has a determination unit which determines a type of the image, a selection unit which selects one of the first projection mode and the second projection mode based on a determination result of the determination unit, and a control unit which controls the projection mechanism in accordance with one of the first projection mode and the second projection mode selected by the selection unit.

Abstract: The present invention provides an illumination system and projection system using the same. 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 projector comprises an alternating-current-drive lamp, a rotating color wheel which includes color segments for transmitting color lights and is disposed in an optical path from the lamp, the color segments including a transparent segment, a projection unit configured to form an optical image by the color lights transmitted through the color wheel, and a light source control unit configured to raise a drive frequency of the lamp in a period in which the transparent segment of the color wheel is present in the optical path from the lamp.

Abstract: A projection system is disclosed that includes a light source, a spatial light modulator, and an optical filter. The light source is configured to generate a light beam having a spectral distribution spanning a set of primary colors. The spatial light modulator has an array of pixel elements. Each pixel element is configured to receive a portion of the light beam and to output a modulated light beam with a spectral peak defining one of the set of primary colors. The optical filter is configured to narrow the spectral peak.

Abstract: Light emitted from a lamp enters a color wheel having a region for allowing a predetermined color to pass therethrough, is reflected on a mirror, and enters a DMD. After this, the light is reflected by the DMD and enters a color sensor, which then detects the color of the transmitting light. A projection apparatus automatically synchronizes the control on the rotation of the color wheel and the control on the proceeding direction of the transmitting light by the DMD, based on a color time-division pattern of the transmitting light detected by the color sensor.

Abstract: The object is to provide a display device that is capable of displaying an image with high luminance and a wide color reproduction range under simple control. The display device includes a light source device that emits first to fourth illumination lights, a spatial light modulator that modulates the illumination lights, and a controller. The controller allows the first and the second illumination lights to time-sequentially enter an identical illumination area of the spatial light modulator, and allows the third and the fourth illumination lights to individually enter the spatial light modulator so as to avoid them from being superimposed on the first and the second illumination lights.

Abstract: In a color wheel comprising a plurality of color filter segments arranged so as to form a disk and a support member fixed to the color filter segments, the color filter segments are each outlined only by a circular arc and two straight lines passing through the center of the disk. Consequently, each of the color filter segments is prepared by cutting the material only to the circular arc and the two straight lines, thereby simplifying the production process. And, the support member can be duly and surely positioned such that the center of the support member is set to coincide with the intersecting point of the two straight lines. Thus, the positional accuracy, the component cost reduction, and the production cost reduction can be achieved at the same time.

Abstract: A projector is equipped with: a light emitting diode for emitting light; an image display element to which the light emitted from the light emitting diode is incident and which modulates the incident light and emits the light as image light; and an ultraviolet light incidence preventing member disposed between the light emitting diode and the image display element for preventing ultraviolet light from being incident to the image display element.

Abstract: Methods and systems for multiple primary color display are provided. Methods and systems of the present invention improve the spectrum efficiency of a color display system, and provide enhanced brightness and color gamut. In an embodiment, methods and systems of the present invention improve the brightness of a color display system employing a high pressure lamp by efficiently incorporating lights components of the lamp output that are outside the red, green, and blue spectrum in creating the color image.

Abstract: A display system includes a light source, a spatial light homogenizer, and imaging optics. The spatial light modulator has a plurality of modulator pixels. The display system also includes a pixelated plate illuminated by the light source. The pixelated plate has a plurality of individually defined pixels formed thereon. The spatial light modulator is in optical communication with the pixelated color management device by the imaging optics and each of the modulator pixels is associated with at least one of the individually defined pixels of the pixelated plate.

Abstract: A digital system without a color filter is provided. The desired color components are produced by a light source capable of emitting the desired color components. The color components are delivered to the pixels of the spatial light modulator through a group of optical lens and/or lightpipes, but without a color filter.

Abstract: A method for fabricating a monolithic color wheel. The method includes (a) preparing a square transparent substrate; (b) forming a plurality of color filters on the square transparent substrate; and (c) cutting the square transparent substrate and the color filters together along a circular path, to form a color filter disk. Through these steps, a color filter disk of color wheel can be produced with better dynamic equilibrium quality, and will run more quietly and smoothly.

Abstract: A method of producing an image comprising impinging a beam of light on first region of a dynamic filter. The dynamic filter comprising at least two regions having different light transmission characteristics. A first region of the dynamic filter transmits a first transmitted portion of the beam of light and reflects a first reflected portion of the beam of light. Impinging at least some of the first reflected portion of the beam of light on a second region of the dynamic filter. The second region of the dynamic filter transmitting a second transmitted portion. The first and second transmitted portions are modulated.