Abstract: The present invention aims to prevent breakage of a sealing part and an electrode of a high pressure discharge lamp, and provides an electrode 100 used for a discharge lamp and having a rod-shaped part 101, one end of the rod-shaped part 101 to be sealed by a sealing part of an arc tube of the discharge lamp, the other end of the rod-shaped part 101 to be in a discharge space in the arc tube, wherein the rod-shaped part 101 has a rough surface that is composed of a plurality of types of crystal grains each having a different surface condition due to differences in crystal orientation.

Abstract: An imaging system (100) includes one or more light sources (101,102,103) configured to produce one or more light beams (104,105,106). An additional light source (111) produces an additional light beam (112), which may be a non-visible light beam like an infrared beam. A spatial light modulator (107) is configured to produce images (109) on a projection surface (110) by scanning the light beams and the additional light beam within an image cone (118) oriented in a first direction (119). A partial reflector (117) is disposed within the image cone (118) and is configured to pass at least a portion of the light beams and reflect at least a portion of the additional light beam within a second cone (120) oriented in a second direction (121).

Abstract: The invention provides an illumination optical system that guides light emitted from light source device 1 to DMD 2, the illumination optical system including: light tunnel 20 that uniformizes luminance distribution of light emitted from light source device 1; relay optical system 40 that guides light having uniformized illumination distribution to DMD 2; and shield board 30 disposed on an optical path between light tunnel 20 and relay optical system 40. Shield board 30 is smaller than outlet end face 22 of light tunnel 20 and at the same time has an opening of a shape similar to the image formation area on DMD 2, and is movable in a plane containing the opening.

Abstract: Provided is a projection optical system which includes a first optical part which projects an image; a second optical part having an image forming device, which forms an image using a light and emits the image to the first optical part; a third optical part having at least one light source which emits the light; and a deflector which guides the light emitted from the third optical part toward the second optical part, wherein an optical axis of the third optical part is angled toward an optical axis of the second optical part, and an optical axis of the first optical part and the optical axis of the second optical part are parallel to each other and separated from each other.

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: A light source device includes: an arc tube having a bulb portion and a sealing portion; a reflector which fixes the arc tube; and a holding portion which holds the reflector, wherein the holding portion includes an inlet port, a partition provided between the inlet port and the arc tube, a pair of passages to which diverges in the partition and can circulate the cooling air to the arc tube, a first opening provided in the partition, and a shutter which is provided on that side of the partition where the inlet port is located, rotates about a rotation axis, and blocks a lower passage of the pair of passages, and on that side of the shutter where the rotation axis is located, a second opening is provided so as to overlap the first opening as seen from the inlet port.

Abstract: A laser projection system includes a light source, a speckle reduction adjustable optical component and a scanning adjustable optical component. The light source includes at least one laser configured to emit an output beam. The speckle reduction adjustable optical component rotates about a speckle reduction axis. The scanning adjustable optical component rotates about two axes. The laser projection system is programmed to generate a scanned laser image on the projection surface by operating the laser for optical emission of encoded image data and controlling the scanning adjustable optical component to rotate about the two axes to scan the output beam in first and second directions. The laser projection system is also programmed to rotate the speckle reduction adjustable optical component and the scanning adjustable optical component such that the output beam illuminates common portions of successive image frames at a different angle of incidence on the projection surface.

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 projector for emitting projection light in a projection direction used in a floor set-wall projection and floor set-floor projection modes. The device includes an aspheric reflection mirror, which reflects light from a light source in the projection direction, and a case, which accommodates the mirror. The mirror reflects the projection light to emit the projection light through an opening in the case. The case includes a first setting surface, which is arranged adjacent to a floor when in the floor set-wall projection mode, and a second setting surface, which is arranged adjacent to the floor when in the floor set-floor projection mode. The second setting surface in the floor set-floor projection mode is located immediately below the mirror and bulges to a location that is in alignment with or frontward from a front end of the mirror.

Abstract: A projection display device accommodates, in a main body cabinet, a projection lens section to which light modulated by a light modulating element is entered, and a mirror section that reflects light transmitted through the projection lens section and directs the light to a projection plane. When the main body cabinet is mounted on a mounting plane so that the light transmitted through the projection lens section may get away from the mounting plane, a holding member which holds the main body cabinet in a upright state with regard to the mounting plane is mounted on the main body cabinet.

Abstract: A high-resolution image is generated using multiple spatially offset lower-resolution digital micro-mirror device (DMD) panels. Multiple lower-resolution subframe signals for controlling the spatial light modulators are generated from a high-resolution image signal using a resolution reduction and interpolation algorithm. The spatial light modulators under control of the subframe signals are illuminated by a light source and light beams reflected from the spatial light modulators are combined and directed onto a screen for display.

Abstract: The structure of a projector contains a light path module, a projection lens module, a source lens module, a reflection mirror module, a reflection panel module, and a light source module. The light path module has a U-shaped body. The source lens module and the light source module are configured along a left side of the light path module. The projection lens module is configured along a right side of the light path module. The projection lens module is for projecting image to a screen. The source lens module is for modulating the light from the light source module. The reflection mirror module is installed at a left corner of the light path module to reflect the incident light from the light source module towards the reflection panel module. The reflection panel module is installed from the outside of a right corner of the light path module.

Abstract: An illumination device includes: an excitation light source that emits excitation light having a first wavelength; and a fluorescent member that includes a fluorescent substance that, when it is irradiated with the excitation light, emits light having a second wavelength longer than the first wavelength, transmits a part of the excitation light and reflects another part of the excitation light, and a first reflective film provided at a side of the fluorescent substance, which is opposite to an excitation light incidence side, the fluorescent member emitting multiplexed light including an excitation light component reflected from the fluorescent substance and the first reflective film and a light component emitted from the fluorescent substance.

Abstract: A projector for acquiring a coordinate of a bright spot includes a half transparent and half reflecting mirror (22), an imaging device (24), and a processing system (25). The half transparent and half reflecting mirror (22) is provided on a light path between the light source (21) and the zooming system (23). The imaging device (24) captures an external light ray reflected by the half transparent and half reflecting mirror (22). The processing system (25) acquires the coordinate of the bright spot according to the image of the image of the bright spot captured by the imaging device.

Abstract: A screen having a display angle of 360°, wherein in the light path of a projection means and in the area of the central axis of a projection surface closed about 360° formed by a pillar a mirror is located, wherein the mirror is configured as a spherical mirror.

Abstract: A catadioptric imaging system combines a rectifying mirror, a lens system and subsequent image processing. This approach can produce a small form factor desktop document imaging system capable of producing high-quality, high-resolution images of paper documents.

Abstract: A projection-type image display apparatus includes an enlarging projection optical unit which is configured to project an image displayed on an image display element enlargedly upon a display portion, a display controller portion which is configured to move a position of the image within a display surface of the image display element. The enlarging projection optical unit has a lens group for projecting the image enlargedly, wherein the display controller portion moves the image so as to display the image within the display surface of the image display element by projecting a portion selectively fitted to the display portion when displaying on the display portion through the enlarging projection optical unit.

Abstract: A projection type display apparatus includes: a lens group comprising a plurality of lenses arranged in the traveling direction of light with respect to an image display element; a first lens arranged in the traveling direction of light with respect to the lens group; a second lens arranged in the traveling direction of light with respect to the first lens; and a mirror for reflecting light emitted from the second lens and obliquely projecting the reflected light onto a screen, wherein a lens, among the lens group, nearest to the first lens is a meniscus lens with its convex surface facing the direction of the first lens, wherein the first lens is a meniscus lens with its convex surface facing the direction of the second lens, and wherein the second lens is a meniscus lens with its convex surface facing the direction of the mirror.

Abstract: A projection type image display apparatus includes an image display element, a projection unit including a first lens group and a second lens group formed with a plural number of lenses, a reflection mirror configured to reflect light emitted from the second lens group thereon after the light passes through the first lens group so as to project the light on a screen obliquely, and a mechanism configured to enable movement of at least one lens of the second lens group in a direction of an optical axis. The first lens group is fixed with respect to a bottom portion of the mechanism and is configured to compensate for an aberration of an optical system thereof. The second lens group is configured to enable movement of at least one lens of the second lens group with respect to the first lens group and the bottom portion of the mechanism.

Abstract: There is a need for providing a projection optical system that is appropriate for maintaining high resolution with low distortion, miniaturizing a reflector, decreasing the number of reflectors, and decreasing the depth and the bottom (or top) of a display used for a rear projection television, for example. The projection optical system according to the invention enlarges and projects images from a primary image surface existing at a reducing side to a secondary image surface existing at an enlarging side. The projection optical system has a first optical system L11 and a second optical system L12. The first optical system L11 forms an intermediate image (position II) of the primary image surface. The second optical system L12 has a concave reflector AM1 that forms the secondary image surface resulting from the intermediate image. A light beam travels from the center of the primary image surface and to the center of the secondary image surface and crosses an optical axis.

Abstract: Disclosed are a projection display apparatus and a projection optics provided in the projection display apparatus. The projection optics has a refractive optics and a reflective optics. In the refractive optics, a lens (non-circular lens) provided on a reflective optics side has a non-circular shape forming part of an imaginary circular region whose center is an optical axis center of the refractive optics. In other words, the non-circular lens has a shape of a cut-out portion of an imaginary circular lens having an optical axis center coinciding with the optical axis center of the refractive optics.

Abstract: The invention relates to a device for projecting an image on a surface, comprising: a light source generating a light beam; a mask arranged in the path of the light beam; a lens arranged behind the mask to focus the image of the mask on a surface, wherein the surface is not parallel to the lens, wherein at substantially each position along the edges of the mask the distance v to the lens and the distance b of the corresponding position at the edges of the image of the mask to the lens correspond substantially to the formula 1/v+1/b=1/f, wherein f is the focal length of the lengths. The invention also relates to a device for moving the image on the surface.

Abstract: A stereoscopic digital image projecting system has a light source system providing polarized illumination having a first polarization state and a beam splitting system with a rotating segmented disk in the illumination, alternately generating first and second light beams, the rotating segmented disk having outer segments alternately transmissive and non-transmissive and inner segments radially aligned with the outer segments and alternately reflective and transmissive. A polarization rotator in a path of either the first or second light beam rotates the first polarization state to a second state orthogonal to the first. A combining system combines the first and second light beams into a combined light beam. A spatial light modulator modulates the combined light beam in a manner consistent with stereoscopic image data to form first and second modulated images having substantially orthogonal polarization states. Projection optics project the modulated images onto a display surface.

Abstract: A beam alignment chamber comprising: a base, first and second side walls connected to the base, and a front wall located at the front edge of the base having an output opening. The beam alignment chamber further including a plurality of light sources disposed to direct light beams through the first or second side walls, a plurality of reflectors mounted on the base, each having independent yaw and pitch adjustments, each being disposed to direct the light beams from a corresponding light sources along the length of the beam alignment chamber through the output opening forming an aligned array of parallel light beams, and one or more optical elements positioned in the optical path of the aligned array of light beams disposed to correct the beam divergence with respect to at least one axis.

Abstract: The projection optical apparatus of the invention comprises a projection optical system 13 for projection of an image displayed on a two-dimensional image display device 13b; a cylindrical screen 11 which is decentered with respect to the projection optical system 13 and onto which an image projected from the projection optical system 13 is projected; and a correction optical system 12 including an optical device 12a that has different powers in the direction (Y-axis direction) of the center axis of rotation of the cylindrical screen 11 and in the direction (X-axis direction) orthogonal to a first plane 101 including a center chief ray C of a light beam traveling from the projection optical system 13 toward the cylindrical screen 11.

Abstract: An LED light shaping device and illumination system are provided. According to one embodiment, a light shaping lens is configured to shape light emitted from a light source and direct the light on a display panel for projection. The light shaping lens comprises a light input surface configured to receive light emitted from the light source a reflective surface configured to reflect at least part of the light received by the light source; and a light output surface having a first curvature in a first direction and a second curvature in a second direction, wherein the light output surface is configured to emit the light that is received by the light input surface and reflected by the reflective surface, and wherein the first curvature and the second curvature are configured to shape the light such that the emitted light has an oval cross section.

Abstract: The present invention provides a projection apparatus, comprising: a light source; a spatial light modulator for modulating the incident light emitted from the light source; a spatial light modulator control unit for generating, from an inputted image signal, a control signal for driving the spatial light modulator; and a light source control unit for receiving data corresponding to the control signal for controlling the light source to operate in one of three states consisted of a driven state, a stopped state and a standby state on the basis of the data.

Abstract: A projection display device includes an imager portion which is arranged in a position closer to one side surface of a main body cabinet to modulate light and guide the light in a direction away from the side surface, and a projection portion. The projection portion is formed by a projection lens portion and a mirror portion which reflects the light through the projection lens portion toward a projection plane. The mirror portion is disposed so as to be shifted from an optical axis of the projection lens portion in a direction opposite to a direction in which the light from the projection lens portion is turned back. A control circuit portion and a holding member are disposed within a space produced between the projection lens portion and the main body cabinet due to a position gap between the projection lens portion and the mirror portion.

Abstract: A projector with reduced size and higher contrast includes a prism assembly, a light system, and a Digital Micro-mirror Device (DMD). Only In the “ON” state of DMD, the light from the light system reflects to a projection screen through the prism assembly and the DMD. The prism assembly includes two prisms and a medium layer. The prism assembly is appropriately designed so as to disable the light in the “OFF” state from reflecting to the projection screen by two-time total internal reflection in the prism assembly, and also to reduce the size of the projector.

Abstract: A projector includes: a light source device; an optical modulation device; a projection optical device; and an exterior casing, wherein a luminous flux passage opening for allowing the image light projected magnified from the projection optical device to pass through is formed in a first surface of the exterior casing, the projection optical device includes an aspheric mirror which reflects the image light to the first surface side, and magnifies and projects the image light via the luminous flux passage opening, and the exterior casing is provided with a transmissive member which closes the luminous flux passage opening; and a cover which, being movably attached to the first surface, moves between a closed position in which the transmissive member is covered and an open position in which the transmissive member is exposed.

Abstract: A method includes generating a plurality of beams that each illuminate a separate portion of a spatial light modulator. The spatial light modulator has a first dimension of a first length and a second dimension of a second length. Each of the beams spans a portion of the first length of the first dimension and a portion of the second length of the second dimension. The method also includes scrolling the plurality of beams along the second dimension of the spatial light modulator while maintaining at least a first gap between each of the plurality of beams.

Abstract: A projector includes a main body and an optical assembly. The main body forms an image and projects the image to a first screen through a lens of the main body. The optical assembly is detachable from the light path of the lens, and is used for reflecting light beams emitted from the lens to project an image on a second screen when the optical assembly is in the light path of the lens. When the optical assembly is detached from the light path of the lens, the optical assembly projects the image on the first screen. The first screen and the second screen are on two adjacent perpendicular surfaces, such as a wall and a ceiling.

Abstract: A projection-type image display device includes an image light generator configured to generate image light, a projection optics configured to project the image light onto a screen. The projection optics includes a reflection mirror configured to reflect the image light toward the screen, the image light outputted from the image light generator. A projection-type image display device includes a protective cover provided on an optical path of the image light reflected by the reflection mirror. The protective cover has a transmissive region transmitting the image light reflected by the reflection mirror.

Abstract: A projector includes a light source module, a diffuser for diffusing the light beam emitting from the light source module, and a fluorescent plate. The light source module includes a light source capable of emitting a first light beam, a dichroic device for diverging the first light beam into a second light beam and a third light beam, and a reflector with a moving frequency exceeding 20 Hz configured for reflecting the third light beam. The fluorescent plate is configured for converting the light beam passing through the diffuser into at least three kinds colored light beams.

Abstract: A light source unit includes: a light source part that supplies light; an optical element that changes an optical path of the light from the light source part; and a wavelength conversion element that converts a wavelength of the light from the optical element. The optical element is movable, and the optical path of the light entering the wavelength conversion element from the light source part is shifted by moving the optical element.

Abstract: This invention realizes an illumination optical system with a small etendue that has a longer lifetime and a high degree of brightness. The invention includes: a laser light source that generates excitation light; a phosphor that generates a fluorescent light by means of the excitation light; a light tunnel that projects the excitation light that is incident at one end towards the phosphor from another end, and projects a fluorescent light generated with the phosphor from the one end; and a dichroic mirror that is provided between the laser light source and the light tunnel, and that allows the fluorescent light or the excitation light to pass through, and reflects the remaining excitation or fluorescent light.

Abstract: A projection apparatus comprising a projection unit provided with an optical system that projects an image, a housing that houses the projection unit, a first surface, provided at the housing, that functions as a distance reference surface that defines a distance from a projection window that the housing is provided with to a projection surface that projects the image and as a first placement surface used when setting the housing, and a second surface, provided at the housing, that perpendicularly intersects the first surface and functions as a second placement surface when setting the housing is provided.

Abstract: A light source device includes an arc tube having a tube spherical portion containing a light emission portion and a pair of sealing portions, a reflector and a sub mirror having a reflecting portion and a fixing portion. The reflector is so shaped that at least an end on one side is removed in a cross-sectional view cut along a predetermined plane containing a revolution center axis. The fixing portion of the sub mirror is so constructed as to cover at least the sealing portion as one of the pair of the sealing portions of the arc tube through an area larger than the half of the outer circumference of the sealing portion.

Abstract: The present disclosure generally relates to a rear projection system. The rear projection system may include a housing assembly configured to house at least a portion of a speaker system. The housing assembly may include a multi-function panel that is at least partially optically transmissive and includes an acoustically transparent portion. The rear projection system may further include a rear projection device positioned within the housing assembly and configured to project a graphical user interface onto an interior surface of the acoustically transparent portion of the multi-function panel. Other embodiments are also within the scope of the present disclosure.

Abstract: A light source device which produces illumination light for illuminating a target illumination area on a predetermined light receiving surface includes: a light source which emits light; a superimposing illumination element which superimposes the light emitted from the light source and applies the light to the target illumination area; an optical path converting unit disposed on an optical path between the light source and the superimposing illumination element to convert the optical path of the light emitted from the light source and supply the light having the converted optical path to the superimposing illumination element; and a shift unit which shifts the optical path converting unit.

Abstract: A projection optical system having a magnification side and a reduction side for forming a magnified image on a magnification side image surface conjugate with a reduction side conjugate image surface includes, arranged in order from the reduction side, a first imaging system including a plurality of lens elements and lens components and a second imaging system including a mirror having a concave, aspheric reflecting surface. An intermediate image is formed between the first imaging system and the second imaging system. The projection optical system satisfies specified conditions related to the travel of principal rays through the projection optical system and related to the Abbe number of a lens element having positive refractive power of the first imaging system. A projection display device includes the projection optical system and may include a light valve for modulating a light beam for projection on a screen.

Abstract: A projection device includes a diffuser and a light source system. The light source system includes a light source, a dichroic element, an actuator, and a reflector. The light source generates a light beam that is directed to the dichroic element. The dichroic element forms first and second individual light beams from the light beam. The first individual light beam is transmitted to the diffuser. The second individual light beam is reflected from the reflector to the diffuser. The actuator is fixed to the reflector and has a removal frequency exceeding 20 Hz.

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 apparatus includes an arc tube having a first electrode and a second electrode that carry out an emission of light due to a discharge between them, and a drive that, when supplying energy in an alternating current to the first electrode and the second electrode, carries out a steady operation supplying a steady energy to the first electrode and the second electrode, and an initial operation making a cumulative energy supplied to at least one electrode, of the first electrode and the second electrode, in an anode period of the relevant electrode, prior to the steady period, greater than during the steady period.

Abstract: A projection device (1) includes: a projector (2) adapted for projecting a mother image along a projection axis (11); and a convex mirror adapted for at least partially reflecting the mother image and projecting it onto a three-dimensional environment (7, 8a, 8b) such as the ground, a ceiling, one or more side walls and the content of a room. When combining the projector with a convex mirror, the mother image can for example be projected into a solid angle higher than 2? steradians (i.e. a half-sphere), or even substantially equal to or slightly lower than 4? steradians (i.e. a sphere). A method implemented by the device is also described. The field of the invention is particularly that of video projectors for virtual or mixed reality applications.

Abstract: An optical system and a projector utilizing the optical system can prevent tilted projection, hence ensuring that keystone distortion will not occur. The inventive optical system includes a lens group and a reflection layer. The lens group has a plurality of lens elements, and is utilized for guiding an input light beam. A shape of each of lens elements is substantially identical to a shape of a half of a rotationally symmetrical lens. The reflection layer is disposed under the lens group, and utilized for reflecting an incident light beam. As a result, the optical system is configured for guiding the output light beam derived from the input light beam to be projected onto an area substantially higher than a common line.

Abstract: A three-dimensional display device includes a display panel displaying first to nth partial images along a circumference; and an n-gonal pyramid mirror including first to nth mirrors at n side surfaces, respectively, of the n-gonal pyramid mirror, wherein the first to nth mirrors reflect the first to nth partial images, respectively, and wherein each of the first to nth mirrors substantially makes a 45 degree angle with the display panel.

Abstract: A high-pressure mercury vapor discharge lamp (1) comprising an envelope (2) of high temperature resistant material having a discharge vessel (3) and two electrodes (5, 6) extending from two seal portions (4) into the discharge vessel (3), the two electrodes having an electrode gap (de) smaller than or equal to 2.5 mm, preferably smaller than or equal to 1.5 mm, is described. The discharge vessel (3) contains a filling which essentially comprises the following substances: rare gas, oxygen, halogen consisting of chlorine, bromine, iodine, or a mixture thereof, as well as mercury in a quantity greater than or equal to 0.15 mg/mm3. The seal portions (4) have a cross-sectional area of between 6 mm2 and 20 mm2, preferably approximately 10 mm2. A method of manufacturing such a high-pressure mercury vapor discharge lamp (1) and a projector system for such a high-pressure mercury vapor discharge lamp (1) are also described.

Abstract: A projection type image display apparatus includes an image display element, a lens group disposed in a direction of propagation of light with respect to the image display element and being formed with a plural number of lenses, a s reflection mirror configured to reflect light emitted from the lens group thereon so as to project the light on a screen, obliquely, and a housing configured to receive the reflection mirror and the lens group therein. The lens group is fixed on a bottom portion of the housing, and a part of the lens group is configured to enable movement of lenses of the lens group.

Abstract: There is provided a light source unit which includes a luminescent light source which receives excitation light so as to emit light of a predetermined wavelength band, excitation light sources which shine excitation light on to the luminescent light source, a reflection space having the luminescent light source in an interior thereof and an emission space which emits luminescent light source light emitted from the reflection space from an emission port whose area is made smaller than the area of the luminescent light source and a projector which employs the light source unit.