Abstract: A projection-type image display device includes three light sources respectively configured to emit a different colored outgoing light, a light combining unit configured to combine outgoing lights, and a projection unit configured to project a combined light combined by the light combining it. The projection-type image display device includes a first cooler configured to cool a first light source of the three light sources, and a second cooler configured to cool a second and a third light source of the three light sources except the first light source.

Abstract: A multi-lamp projection display apparatus is provided. The multi-lamp projection display apparatus includes a plurality of detachable lamp boxes each having a lamp used as a light source and a memory; and a control device configured to assign an address of the memory in each of the lamp boxes in accordance with an attaching position of the lamp box and write information into the memory.

Abstract: A light source comprises a lamp such as an ultra-high pressure mercury lamp or a metal halide lamp and its irradiated light is emitted after being parallelized by a parabolic reflector. The parabolic reflector is made by pressing metal such as stainless and its light exit side aperture is covered with a transparent plate made of glass, etc. The transparent plate prevents fragments of glass of the lamp and the like from scattering when the lamp bursts. The parabolic reflector does not have an aperture (cut-out) for ventilation, but heat radiation fins are formed on the outer surface of it.

Abstract: According to one exemplary embodiment discussed herein, an active color wheel is provided. The active color wheel according to one exemplary embodiment includes a plurality of light sources configured to be moved through a period of motion. Further, the plurality of light sources are configured to be activated over a range of the period of motion.

Abstract: A projection device includes a light source emitting light beams, a display element displaying images according to video signals, an adjustable collimator arranged between the light source and the display element, and a condensing lens unit arranged between the adjustable collimator and the display element. The adjustable collimator collimates the light beams of the light source to parallel beams. The condensing lens projects the parallel beams to the display element. A driving unit is used for adjusting a distance between the light source and the adjustable collimator. A lens adjusting unit is used for adjusting a focus of the adjustable collimator according to the distance between the light source and the adjustable collimator. The projection device can reduce light loss and achieve a projection image with high contrast and high brightness.

Abstract: The present invention provides an image display device which detects projection region suitable for performing a display of an image and displays an image on the detected projection region. The present invention provides an image display device which displays an image on a projection surface by projecting light on the projection surface. The image display device includes an aptitude detection part which detects an aptitude as the projection surface, and a projection control part which controls projection light such that the an image to be displayed on the projection surface falls within a predetermined projection region in response to a detection result by the aptitude detection part.

Abstract: An improved architecture for a projector comprising a light source in the form of a lamp with a curved reflector with a distinctive focal distance for converging the light beam of the lamp; a so called cold mirror; an integration rod; a relay optics system consisting of a plurality of lenses followed by a light valve, wherein the architecture allows for the use of light sources with different focal distances.

Abstract: With a simple structure, the light focusing convergence point for the Maxwellian view and the position of the pupil can be easily and quickly matched to each other in a steady manner and thus it is possible to obtain a sharp image by the Maxwellian view. When the position of the point light source 11 is automatically adjusted by the light source driving apparatus 14 using the parallel light as shown in Portion (a) of FIG. 1 as the display image light incident on the convex lens 13 (or HOE) or using the spherical wave light instead of the parallel light as shown in Portion (b) of FIG. 1, the position of the light focusing convergence point A for the Maxwellian view with respect to the position of the pupil is easily and quickly adjusted in a steady manner. Further, as with an optical path length L of the entire optical system, as shown in Portion (b) of FIG.

Abstract: A light source apparatus comprises a casing having a light emission window which is formed on a front side of the casing; a lamp provided in the casing; a light condensing reflection mirror which is provided in the casing and which has a reflection face therein for reflecting light emitted from the lamp towards the light emission window; a lamp position adjustment mechanism which holds the lamp and adjusts a position of the lamp in the casing; and a spatial separation wall, wherein a light source installation space is defined by the casing and the spatial separation wall structure member, and wherein the lamp position adjustment mechanism is disposed outside the light source installation space.

Abstract: In one embodiment, a reflector directs light toward a focal point and a light source emits the light and is adjusted with reference to an optical axis through the focal point to generate a desired illumination output. In another embodiment, a reflection system reflects light and a light source that emits the light is adjusted with reference to an optical axis such that the reflection system reflects the light toward a desired focal point according to a position of the light source.

Abstract: Disclosed herein is a projector for projecting an image to a screen, including: a lamp configured to emit light; an elliptic reflecting mirror configured to reflect and condense the light from the lamp; an image display device configured to modulate the light reflected and condensed by the elliptic reflecting mirror with image data corresponding to the image to convert the reflected light into image light; a projection lens disposed between the screen and the image display device and configured to project the image light from the image display device to the screen; and a position adjustment mechanism configured to displace the bright point of the lamp from a first focus of the elliptic reflecting mirror to adjust the position of the lamp so as to decrease the effective light amount of the image display device.

Abstract: Disclosed herein is a projector for projecting an image to a screen, including: a lamp configured to emit light; an elliptic reflecting mirror configured to reflect and condense the light from the lamp; a sensor configured to detect the amount of the light reflected and condensed by the elliptic reflecting mirror; a lamp power supply configured to supply power to the lamp to drive the lamp; and a control circuit configured to successively increase the power to be supplied from the lamp power supply to the lamp until after a variation value of the amount of the reflected light detected by the sensor becomes equal to or lower than a predetermined threshold value.

Abstract: A projection display apparatus is provided with a projection distance adjustment mechanism for adjusting a distance between a projection plane and an emitting position of projection light, and provided with a focus adjustment mechanism for making a focus adjustment of a projection image with respect to the projection plane. The focus adjustment mechanism is driven such that a projection image is properly focused onto the projection plane in accordance with the distance between the projection plane and the emitting position.

Abstract: A lamp and illumination optics assembly interface includes an illumination optics mount having a plurality of datum features formed thereon, and a lamp, wherein the lamp is configured to be substantially directly coupled to the illumination optics housing.

Abstract: A lighting system comprised of a central controller, a digital communications path, and a plurality of image projection lighting devices (IPLDs) is provided. The IPLDs contain cameras that can capture both visible light and infrared light. Address signals sent from the central controller first address a particular IPLD and then command signals sent from the central controller control an infrared blocking filter to be positioned in and out of a camera optical path of the particular addressed IPLD.

Abstract: An information handling system projector lamp door includes a thermal safety latch that secures the lamp cover panel if the temperature of the projector interior exceeds a safety limit associated with potential harm to an end user. A thermostatic spring expands at a predetermined temperature to interfere with movement of a latch so that the latch is locked to secure the cover panel in a closed position. Below the predetermined temperature, the thermostatic spring retracts to allow movement of the latch so that the cover panel is released to move to an open position. An override interfaces with the thermal safety latch to allow manual release of the cover panel by retracting the thermostatic spring.

Abstract: A lamp module mounted on a housing is provided. The lamp module includes a lamp and a lamp sleeve. The plane perpendicular to an optical of the lamp has an x-axis direction and a y-axis direction mutually perpendicular to each other. The lamp is mounted within the lamp sleeve, and a positioning piece is formed at one end of the lamp sleeve for mounting the lamp sleeve on the housing. The positioning piece at least includes a first surface and a second surface respectively parallel to the x-axis direction and the y-axis direction. At least one of the first surface and the second surface is equipped with an adjustable apparatus for adjusting the alignment of the lamp by moving the positioning piece along the direction(s) of the x-axis or/and the y-axis. The adjustable apparatus comprises a positioning component, a fastener and an elastic component.

Abstract: A projector includes illumination optics for providing light beams, a light modulating apparatus for receiving and modulating the light beams provided by the illumination optics, a projection lens for projecting an image of the light beams received from the light modulating apparatus, a first adjusting device for adjusting a position of the illumination optics and adjusting an angle of incidence of the light beams emitted onto the light modulating apparatus, and a second adjusting device for adjusting a position of the projection lens in response to the adjustment of the position of the illumination optics for creating an offset of a position of the image projected by the projection lens.

Abstract: A housing is mounted with a screen. The housing accommodates a projector unit and a mirror. Image light emitted from the projector unit is projected to the rear of a translucent screen via the mirror. The projector unit includes a unit body, which accommodates liquid crystal display (LCD) panels and a projection lens, and a lamp housing in which a lamp unit is removably set. The lamp housing is rotatably attached to the unit body in a direction parallel to the screen and perpendicular to the unit body. The lamp housing is fixed to the unit body in a state that the lamp unit is set in a predetermined posture. The lamp unit is set in the lamp housing via a lamp opening of the housing.

Abstract: An optimal processing portion (21) inputs a video signal (RGB signals) and analyzes 1-frame video in the video signal. For example, if the intensity of red color is 0 percent in all dots in 1-frame video, the optimal processing portion (21) applies to a light source gain adjustment portion (22) a control signal for rendering a gain of the illuminating device (1R) 0 percent (minimum amount of light). The light source gain adjustment portion (22) receives the control signal and controls power supply to the illuminating device (1R). In addition, the optimal processing portion (21) applies a driving instruction for rendering the amount of light transmission 0 percent with regard to all dots of the liquid crystal display panel (3R), for example, to a LCD signal processing portion (23).

Abstract: Exemplary embodiments of the present invention provide a lighting unit including a lamp device adjusted by a general-purpose measuring device at high working efficiency, and yet allowing efficient utilization of light from a light source. In a light source device, since a first fly's eye has a concave entrance surface having a predetermined curvature, luminous flux entering the first fly's eye optical system and passing through the entrance surface is collimated to be parallel with an optical axis. Accordingly, illumination lights entering respective liquid crystal light valves are precisely superposed while allowing the angles of incidence of respective partial luminous fluxes entering the respective liquid crystal light valves to fall within a predetermined angle range, thereby enhancing utilization efficiency of the illumination lights.

Abstract: According to one embodiment a method for aligning a light source includes providing a lamp and a lamp interface. The lamp interface has an alignment aperture disposed thereon. The method also includes aligning the lamp with respect to the lamp interface until a desired amount of light is focused on the alignment aperture. The method further includes fixing the lamp to the lamp aperture to form an aligned lamp assembly after obtaining a desired lamp alignment. Then the aligned lamp assembly is coupled to an integrating rod.

Abstract: The methods and apparatus for lighting systems provide a camera integral to a particular image projection lighting device (IPLD) to capture the projected image from the particular IPLD. The captured image can then be sent over a communication system to the operator for viewing on a visual display device such as a computer monitor on a central controller. Using the captured image of the projected image as viewed upon the display device, the operator may then command using the central controller the focusing, position or other parameters of the projected image upon the stage or projection surface to the desired value. The captured image may also be used, such as by a central control system, to automatically, and without operator intervention, adjust parameters of the IPLD to desired values.

Abstract: A lamp receiver includes a first member, and a datum structure having a plurality of first reference surfaces for alignment with respect in a first direction, a plurality of second reference surfaces for alignment in a second direction, and at least one third surface for alignment in a third direction. The first reference surfaces are formed on the first member.

Abstract: An image projector allowing a lamp to be replaced alone. The lamp has lamp retention projections each extending from the periphery of a reflector. A lamp mounting member includes a plate with which the reflector of the lamp is brought into contact. The plate has a window, leaf springs, and positioning projections. Each of the leaf springs is arranged along the rim of the window with one end fixed on the plate and the other end free, and has a concave portion between the fixed end and the free end. When the lamp is placed on the positioning projections and turned clockwise, each of the lamp retention projections is inserted between the plate and the free end of each of the leaf springs to be received in the concave portion. Thus, the lamp is held on the lamp mounting member. When the lamp is turned counterclockwise, the lamp is released from the lamp mounting member.

Abstract: A projector includes a resin-made lamp case in which a light source lamp is fitted and a metal-made optical part holder in which an optical part is fitted. Preferably, the lamp case includes a positioning boss, the optical part holder includes a resin-made lamp case holder which accommodates the lamp case, a tubular light tunnel which shapes a form of light, a cylindrically shaped portion having a guide hole into which the positioning boss is inserted, and a resiliently deformable detent member, a metal-made light-tunnel fixing member, the detent member is substantially U-shaped and is provided integrally on the light-tunnel fixing member, the cylindrically shaped portion has a slot portion into which the detent member is inserted and which extends from an outer peripheral surface to the guide hole, and the positioning boss has a concave engaging portion which is engaged with the detent member.

Abstract: An object of this invention is to provide a light source unit capable of effectively utilizing converged light from a high-pressure discharge lamp by positioning light axes of an ellipsoidal mirror and a lens to coincide.

Abstract: A method of monitoring an illumination source including a reflector and a lamp. A reference orientation is defined where the reflector and a light producing luminary of the lamp are aligned to optimize light intensity reflected from the luminary to a desired target. The orientation of the lamp is monitored, and changes from the reference orientation are reported as an indication of a reduction in light intensity reflected from the luminary toward the desired target.

Abstract: An image projection lighting device is disclosed having a processor and communications port. The communications port may receive a contrast command. The processor may modify contrast of image data in response to the contrast command to form contrast modified image data. The communications port may receive a black level command. The processor may modify image data in response to the black level command to form modified image data having a modified black level. Modified black level image data may be created by adding or subtracting an offset to the image data.

Abstract: An image projection lighting device is disclosed having a processor and communications port. The communications port may receive a contrast command. The processor may modify contrast of image data in response to the contrast command to form contrast modified image data. The communications port may receive a black level command. The processor may modify image data in response to the black level command to form modified image data having a modified black level. Modified black level image data may be created by adding or subtracting an offset to the image data.

Abstract: An optical projection module includes a front optical module, a rear optical module and an adjustment member mounted between the front and rear optical modules. The front optical module includes a lighting module, an integrated rod and a color wheel. One end of the adjustment member is pivotally mounted to the front optical module, and the other end of the adjustment member is screwed on the rear optical module to form the optical projection module. By linear movement of the rear optical module actuated by rotation of the adjustment member along an optical axis, a relative position of the rear optical module and the front optical module is adjusted so that lights coming from the color wheel are clearly projected on a light valve with simplified digital signal processing, reduced loss of luminance and increased luminescence efficiency.

Abstract: An improved image projection lighting device is disclosed. Commands received by a communications port of the base housing may be acted upon to change zoom and focus values of a zoom and focus lens. A cooling system may be provided which compares an input air temperature of the image projection lighting device to an exiting air temperature to determine if a filter needs service. A video projector may project a first image comprised of first, second, and third separate images and the first separate image can be faded up to project light that is void of an image by a first command received at the communications port.

Abstract: There is provided a rear projection television having a construction which facilitates replacement of a light source lamp and repair work within the body. The rear projection television includes a screen panel disposed at the front of a cabinet thereof, for receiving projection light projected from behind for image display, to thereby display an image thereon, a light source lamp removably disposed within the cabinet, for projecting the projection light, and a working door provided in the front face of the cabinet. An opening-detecting sensor detects opening of the working door and outputs an opening-detecting signal. An illumination section for replacement work disposed within the cabinet illuminates the inside of the body. The control section causes the illumination section to light when the opening-detecting signal is outputted by the opening-detecting sensor.

Abstract: A lamp unit for an image projector comprises: a cable fixing portion comprising two posts and provided to stand inside a lamp box; and a cover plate mounted to contact upper ends of the posts and of the cable fixing portion. A cable for supplying electric power to a lamp body is inserted into the space between the posts, and wound around the posts. Thereby, even when a connector at an end of the cable is pulled, the cable is fixed and does not move, with the pulling force being not transferred to the lamp body. The cover plate mounted to contact the upper ends of the posts furthermore prevents the cable from slipping off the posts. Thus, with simple cable fixing structure, the lamp body can be prevented from slipping in position without increasing cost.

Abstract: An improved image projection lighting device is disclosed. Commands received by a communications port of the base housing may be acted upon to change zoom and focus values of a zoom and focus lens. A cooling system may be provided which compares an input air temperature of the image projection lighting device to an exiting air temperature to determine if a filter needs service. A video projector may project a first image comprised of first, second, and third separate images and the first separate image can be faded up to project light that is void of an image by a first command received at the communications port.

Abstract: In a projection display device, a plurality of light emitting diode elements are arranged to make up a light emitting diode element array, and a plurality of the light emitting diode element arrays are assembled to form a light source array. The device comprises a mechanism for moving the light source array; a light source driver circuit for turning on each of the light emitting diode elements within the light emitting diode element array; and a control circuit for controlling the lighting of each light emitting diode element. A first and a second fly-eye lens are each composed of a plurality of rectangular elemental lenses assembled in an array form, where the element lenses are identical in quantity to the light emitting diode element arrays. The light source moving mechanism reciprocates the overall light source array in a plane perpendicular to the optical axis of, the first fly-eye lens.

Abstract: A projection method using a real object projector is disclosed. The real object projector comprises a base, a control circuit installed in the base, and an image receiving apparatus installed on the base. The base is combined with a light source module, and between the light source module and the base is a different movable connection relationships according to different designs. The light source module can have a transparent film clip with an identifying mark, and different transparent film clips have different marks. When projecting with the real object projector the steps are, firstly moving the image receiving apparatus to a suitable position according to the mark on the transparent film clip, then focusing the image receiving apparatus according to the transparent film clip, and finally pressing an image receiving key to automatically identify the kind of transparent film clip and magnify the projection image with the control circuit.

Abstract: A real object projector having a base, a control circuit installed in the base, and an image receiving apparatus installed on the base. The base is combined with a light source module, and between the light source module and the base are different movable connection relationships according to different designs. The light source module can have a transparent film clip with an identifying mark, and different transparent film clips have different marks. When projecting with the real object projector the steps are, firstly moving the image receiving apparatus to a suitable position according to the mark on the transparent film clip, then focusing the image receiving apparatus according to the transparent film clip, and finally pressing an image receiving key to automatically identify the kind of transparent film clip and magnify the projection image with the control circuit.

Abstract: A device for a projector to adaptively receive lamps of different sizes. The device includes a fixing element for fixing a lamp to a support structure of the fixing element. The lamp having a lamp tang. The fixing element provides a locking mechanism for the lamp and is adapted to receive at least two different diameters of lamp tangs. The fixing element for the lamp is movable between at least two positions, to adapt to a focal distance of a specific lamp.

Abstract: An electronic circuit for operating a High Intensity Discharge (HID) lamp, in particular a Ultra High Pressure (UHP) lamp, such as those preferably used in image projectors. The circuit comprises a lamp ballast for offering a controlled lamp current for operating the HID lamp and a brightness sensor for generating and providing a sensor signal which represents the brightness of the light applied by the lamp to the image generator. The lamp ballast controls the lamp current such that the brightness of the light of the lamp remains constant. Brightness control is made possible throughout the entire operational life of the lamp, and the use of sensors of simple construction is made possible by an incorporation within the electric circuit of a filter that high-pass filters the sensor signal before it is supplied as a control signal to the lamp ballast.

Abstract: A structure for attaching a lamp cover (61) to an upper case (21), when a part (631C) of a fitting (631) is pressed downward by a pin member (P) to release engagement of the lamp cover (61) with the upper case (21). The lamp cover (61) is biased toward outside of the exterior case, so that the lamp cover (61) can be opened with one pressing action of with the pin member (P) and operation thereof can be facilitated.

Abstract: A mounting system for three axis rotational adjustment of a light projector assembly of a projection television, the mounting system having a spherical wall and a spherical bracket slidably engaged with the spherical wall and moveable relative thereto. The wall and bracket coact with one another to rotate the light projector assembly about three axes, thereby restricting movement of the projector assembly to a portion of a spherical path and enabling adjustment of an image generated by the projector assembly on a screen of a projection television to a desired geometry without affecting picture centering.

Abstract: This invention provides a projector capable of correctly informing a user of replacement time of a lamp and significantly improving performance and operation reliability.

Abstract: An image projection system comprises an image projector, such as a film or television projector and a projection screen. The projection screen is fabricated of a substantially transparent material, such as glass or plastic. The screen of transparent material has one or more areas or portions formed therein which areas or portions may be made to be translucent upon the application of a stimulus. Once in a translucent condition, the projected image can be received and viewed on the translucent portion. A mirror can be positioned behind the projection screen so that a person can view the reflection of themselves in the mirror when the screen is transparent, and an image can be projected when the projection screen is made to be substantially translucent.

Abstract: The thickness of the projector device can be reduced by making the direction of irradiation of a digital micromirror device (DMD) with illuminating light by an illuminating optical system variable depending on whether the projector device is used or not used. As an illuminating optical system is provided rotatably around an optical axis of a projecting optical system, the position of the illuminating optical system can be varied depending on whether the projector device is used or not used, and the overall thickness of the projector device can be thereby reduced.

Abstract: The invention provides a light source device of an easy maintenance, and a projector using the light source device. The light source device includes a light source lamp, a reflector, a lamp housing for covering substantially entirely almost the outer surface except for an opening plane of the reflector and a front glass for covering the opening plane of the reflector. The light source device is formed so as to be integrally exchangeable as a unit in the projector. Since the lamp housing covers almost the whole surface of the reflector, even if the light source lamp and the reflector burst, fragments thereof do not scatter to the inside of the projector, there is no need to remove the outer casing to clean the inside of the device, and maintenance of the projector can be facilitated.

Abstract: Disclosed is a projection display apparatus in which the optical axis of a lamp and that of an optical unit can be easily made coincide with each other irrespective of dimensional variations of component parts. A lamp holder (32) is movably attached to a ride side plate (37) of a lamp case by extension springs (63). The center of a lamp (1) is positioned on the optical axis (20x) of an optical unit (20) by a circular arc wall face (32f) of the lamp holder (32) and a V-shaped member (45) fixed to the optical unit (20). The optical axis (1x) of the lamp (1) and the optical axis (20x) of the optical unit (20) are set to be parallel to each other by a slide reference face (20a) of the optical unit (20) and three projections of the lamp holder (32). Since the lamp holder (32) is not fixed to a lamp house, an influence of accumulation of dimensional variations of components such as the lamp house exerted on the adjustment of the optical axes of the lamp (1) and the optical unit (20) can be minimized.

Abstract: A projector has a liquid crystal display panel for displaying an image, a lamp for illuminating the liquid crystal display panel, and a projection optical system for projecting light modulated by the image displayed. The lamp is held by a member whose position is variable to allow fitting of different types of lamp. The projector acquires data related to the lamp currently fitted and controls the light emission of the lamp on the basis of that data. The data includes the life of the lamp, so that the projector prevents the lamp to be lit longer than its remaining life. The remaining life is updated in accordance with how long the lamp has been lit. In addition to the lamp that is lit, an auxiliary lamp may be fitted so that the lamp that is lit can be switched to the auxiliary lamp as required. The lamp is formed into a single lamp unit together with a reflector or a casing to prevent the user from touching the lamp.

Abstract: A projector having a first housing, a second housing, a projector mainframe, a lamp module and a connector pair is disclosed. The removabl lamp module is installed in the first housing which forms part of the projector housing. The projector mainframe is enclosed in the second housing which forms the other part of the projector housing. The connector pair comprises a first half connector and a second half connector, which can be fixed to or separated from each other. The first half connector connected to the lamp module is movable with respect to the second half connector fixed to the projector mainframe. When the first and second half connector are mechanically coupled, the lamp module is then mechanically coupled with the projector mainframe such that the projector can be successfully assembled.

Abstract: The invention provides a light source device of an easy maintenance, and a projector using the light source device. The light source device includes a light source lamp, a reflector, a lamp housing for covering substantially entirely almost the outer surface except for an opening plane of the reflector and a front glass for covering the opening plane of the reflector. The light source device is formed so as to be integrally exchangeable as a unit in the projector. Since the lamp housing covers almost the whole surface of the reflector, even if the light source lamp and the reflector burst, fragments thereof do not scatter to the inside of the projector, there is no need to remove the outer casing to clean the inside of the device, and maintenance of the projector can be facilitated.