Abstract: A projector includes an image formation apparatus that forms an image, a lens barrel that accommodates a projection lens that projects the formed image, and a light blocking portion that is configured as a member separate from the lens barrel, is located in a position between the image formation apparatus and the lens barrel, and blocks light to be incident on the lens barrel. The configuration of the projector allows blockage of light incident on the lens barrel and hence prevention of distortion of the lens barrel.

Abstract: A discharge lamp driver includes a discharge lamp drive unit that supplies a drive current to the discharge lamp, and a control unit that controls the discharge lamp drive unit according to a drive current waveform, wherein the drive current waveform has a mixed frequency drive period including a unit drive period containing a first drive period in which a first drive current is supplied to the discharge lamp and a second drive period provided immediately after the first drive period, in which a second drive current is supplied to the discharge lamp, the first drive current is a half-period alternating current having a frequency higher than 10 Hz and not higher than 300 Hz, the second drive current is an alternating current having a frequency higher than 1000 Hz, and a length of the second drive period is equal to or longer than a length of the first drive period.

Abstract: A multi-DMD projection system uses an extended X-cube color splitting/recombining prism to implement splitting and recombining functions at different sections of the cube. Light directed from a white light source is split into red, green and blue components in a lower section of the cube. The components are directed to respective first, second and third DMDs for separate modulations and reentered into the X-cube prism by TIR prism for recombining at an upper section of the cube.

Abstract: An optical apparatus includes a touch substrate; a waveguide layer arranged on the touch substrate, the waveguide layer including a plurality of waveguides; an optical output structure arranged on the waveguide layer and configured to output light propagating in the plurality of waveguides at touched locations on the touch substrate; a gap layer arranged to provide a predetermined gap between the waveguide layer and the optical output structure; and an optical system, which projects light output by the optical output structure.

Abstract: A lithography tool is calibrated using a calibration substrate having a set of first marks distributed across its surface in a known pattern. The tool is operated to apply a pattern comprising a plurality of second marks at various positions on the substrate, each second mark overlying one of the first marks and being subject to an overlay error dependent on an apparatus-specific deviation. The second marks are applied by multiple exposures while the substrate remains loaded in the tool. An operating parameter of the apparatus is varied between the exposures. An overlay error is measured and used to calculate parameter-specific, apparatus-specific calibration data based on knowledge of the parameter variation used for each exposure.

Abstract: A light source device includes a phosphor layer having a side surface, a bottom surface, and a top surface opposed to the bottom surface, a reflecting member opposed to the side surface of the phosphor layer, a substrate disposed on the bottom surface side of the phosphor layer, and an adhesive adapted to bond the phosphor layer and the substrate to each other. A surface of the substrate located on the phosphor layer side includes a recessed section overlapping the reflecting member on at least an outer side of the phosphor layer in a planar view. A part of the adhesive running off the phosphor layer is received by the recessed section. Fluorescence generated in the phosphor layer is emitted from the top surface and the side surface.

Abstract: Systems and method directed to digital pattern generator (DPG) having a mirror array in an e-beam lithography system are discussed. The mirror array includes a first bank of mirrors and a second bank of mirrors with a combination logic structure interposing the first and second banks of mirrors. An output data line extends from the first bank of mirrors to the combinational logic structure. An input data line that carries data associated with the second bank of mirrors is also provided to the combinational logic structure. An output data line extends from the combinational logic structure to second data bank.

Abstract: A projector includes a projecting unit including a projection optical system and configured to project an image on a screen SC, a lens driving unit configured to perform focus adjustment for the projection optical system, a trapezoidal-distortion correcting unit configured to perform distortion correction processing for correcting distortion of the image projected by the projecting unit, and a projection control unit configured to cause the trapezoidal-distortion correcting unit to execute the distortion correction processing until a completion condition for the distortion correction processing holds after a start condition for the distortion correction processing holds and restrict the execution of the focus adjustment by the lens driving unit while the projection control unit causes the trapezoidal-distortion correcting unit to execute the distortion correction processing.

Abstract: In order to cool the discharge lamp, cooling air generated by first and second cooling fans conveyed via first and second ducts into first and second lamp-cooling air inlets of the discharge lamp, and is blown into the discharge lamp. The first and second lamp-cooling air inlets are disposed so as to be symmetrical with respect to the optical axis of the discharge lamp, and are divided into a plurality of air inlets each having different opening surface areas. Having passes through the plurality of air inlets and diverging into a plurality of air currents, the cooling air is respectively blown to different parts of the discharge lamp. The rotational frequency of the first and second cooling fans is optimally controlled in accordance with the installation position (S) of the projector device.

Abstract: A solid state illumination system is provided for image projection. Red, green and blue light is generated using a blue laser light source and phosphor emissions. The red, green and blue light is passed by TIR or TRIR elements of red, green and blue light channels of an X-cube prism structure for separate modulation by different spatial light modulators. The modulated red, green and blue light is passed by the TIR or TRIR elements into the X-cube and combined into a combined modulated RGB image forming light stream for image formation via projection optics onto a target imaging surface.

Abstract: The present invention relates to a projector clustering method including the steps of: (a) arranging projection areas of a plurality of projectors to be overlapped with each other; (b) setting a reference projector among the plurality of projectors; and (c) calculating relative transformation information between the reference projector and the other projectors.

Abstract: A projector includes an illumination device adapted to emit a plurality of light beams, which includes a first light beam and a second light beam, as illumination light, a liquid crystal light valve, and a projection optical system adapted to project image light, which is emitted from the liquid crystal light valve, on a screen. The image light is formed of a plurality of diffracted light beams and a plurality of zero-order light beams, which are generated by the illumination light and the liquid crystal light valve. In the exit pupil, an illuminance peak due to the zero-order light beam corresponding to the first light beam is disposed at a position different from a position of an illuminance peak due to the diffracted light beam corresponding to the second light beam.

Abstract: A projection type image display apparatus (1) comprises a focus correction system (30). The system includes a temperature detection mechanism (16) for measuring temperature in the vicinity of a projection lens group (13), a correction amount calculation unit (18) for calculating a correction amount for correcting the focus shift caused by a temperature change, and a driving signal generation unit (19) for generating, based on the correction amount, a driving signal for driving a focus adjustment mechanism (15). If the user performs a focus adjustment using a focus operation input unit (23), a focus operation determination unit (21) determines that a focus adjustment has occurred independently of the focus correction system and changes a correction condition stored in a memory (20).

Abstract: An image projection apparatus comprises a light projector (605) which projects an image onto a surface (603) of an object. A focussing processor (609) is arranged to focus the image on an image plane (607) and a controller (611) dynamically varies the position of the image plane (607) relative to the surface (603). The movement may be a predetermined periodic movement and the surface may specifically be a non-planar surface. The movement may result in a blurring effect independent of distance, and may specifically provide a blurring effect that can be pre-compensated by pre-filtering of the image to be projected. The invention may allow improved quality of a projected image, such as e.g. of an image projected on a non-planar or moving surface.

Abstract: A projector which includes a light source, liquid crystal light valves, a dimming mechanism, an illumination optical system, a control circuit which determines an input light amount which is caused to be input to the liquid crystal light valve on the basis of an input image signal, outputs an output image signal which is decompressed according to the input light amount, and generates a first control signal which designates a first dimming rate of a high pressure mercury lamp and a second control signal which designates a second dimming rate of the dimming mechanism based on the input light amount, an illumination driving circuit which drives the light source on the basis of the first control signal, and a douser driving circuit which drives the douser on the basis of the second control signal.

Abstract: A display apparatus includes multiple display modules. Each of the display modules includes a display surface, a projecting device, and first, second, and third reflectors. The display surface has long and short edges perpendicular to each other. The projecting device projects a first image having a first optical axis parallel to the short edge. The first reflector reflects the first image to form a first reflected image having a first reflection optical axis perpendicular to the short edge. The second reflector reflects the first reflected image to form a second reflected image having a second reflection optical axis perpendicular to the short edge. The third reflector is parallel to the second reflector and reflects the second reflected image to form a third reflected image having a third reflection optical axis perpendicular to the long and short edges. The third reflected image is projected on the display surface.

Abstract: A video projection device includes an optical engine which projects video light, an aspherical mirror which reflects the video light projected by the optical engine with a reflective surface formed in a rotationally symmetrical shape centering on an optical axis, a reflective screen on which the video light reflected by the aspherical mirror is projected, a shielding housing which houses the optical engine, the aspherical mirror, and an electric circuit portion which electrically drives the optical engine, and a strut member which connects a rear surface portion of the shielding housing, and a rear surface portion of the reflective screen in a state where the rear surface portion of the shielding housing and the rear surface portion of the reflective screen are positioned.

Abstract: Polarizing beam splitters and systems incorporating such beam splitters are described. More specifically, polarizing beam splitters and systems with such beam splitters that incorporate multilayer optical films and reflect imaged light towards a viewer or viewing screen with high effective resolution are described.

Abstract: A carrier system for a medical treatment facility includes a track device that is to be suspended from a ceiling of the medical treatment facility and that determines a curved path, and a lifting device to move a medical device between an upper resting position and a lower operating position, such that the lifting device can move along the path determined by the track device.

Abstract: An air intake device for a submarine comprises a first fixed member connected to the submarine hull and a second member which is telescopically movable relative to the first member to rise up with an upper end of it above the water's surface to allow air to be taken in from the atmosphere during navigation of the submarine at periscope depth, the movable member mounting at its upper end a radar device designed to emerge from the water together with the selfsame movable member.