Abstract: An illuminating device includes: a solid-state light emitting element that includes a light source and a phosphor and emits light from the light source and phosphorescent light emitted from the phosphor excited with the light from the light source toward an optical system; and a reflective portion that reflects part of the light emitted from the solid-state light emitting element, which does not enter the optical system, back to the solid-state light emitting element so that the reflected light having originated from the light source is used to excite the phosphor.

Abstract: An optical system of a portable projector and a mobile communication terminal using the same are disclosed. The optical system comprises a light transmission member having first and second surfaces, a light source device for emitting light beams onto the first surface of the member, so as to allow the light beams to be transmitted into the member, and one or more optical elements supported on at least one of the first and second surfaces of the member for diffracting the light beams incident from the light source device into the member, and subsequently reproducing and emitting an image from the diffracted light beams, to the outside of the member.

Abstract: An image display device of the present invention includes two lamps A and B as light sources. A mirror is pivotally moved to supply light from the lamp A, B to an optical system. In the case where the lamp A is used, the mirror is temporarily driven in the direction of lamp B before the lamp A is activated. Thereafter, the mirror is returned to the position where the lamp A is used, and is pressed against a restraining member. Thereby, the mirror is positioned at a proper angle with respect to the light from the lamp A when the lamp A is activated.

Abstract: A mirror unit of the present invention includes a base member constituted of an upper plate portion, a lower plate portion, a connecting portion connecting the upper plate portion and the lower plate portion, and wall portions. A mirror holder for holding a mirror is pivotally supported between the upper plate portion and the lower plate portion. A recess is formed in the wall portions. An adjuster is mounted in the recess. Screw holes extend through the recess, and adjusting screws are engaged in the screw holes. Lifting amounts of plate portions of the adjuster can be adjusted by the adjusting screws. The tilt angle of the mirror is adjusted so that the mirror is properly tilted with respect to a light flux from either one of two lamps.

Abstract: A reflection surface (1a) of a mirror (1) has a rotationally-symmetrical shape about an optical axis (110). The mirror (1) is rotatably supported by a pivot supporting portion (41) on the position of the optical axis (110) of the reflection surface (1a) or in the vicinity of the optical axis (110). Furthermore, the mirror (1) is slidably supported by slide supporting portions (42) at two positions on the upper part thereof. With such a configuration, the mirror (1) is supported at three points. Further, even when the mirror (1) expands and contracts due to the change in temperature or the like, the deformation of the reflection surface (1a) of the mirror (1) is prevented by the action of the slide supporting portions (42). As a result, it is possible to prevent the generation of distortion of an image projected on a screen (300).

Abstract: The present invention relates to a projection device comprising a body (1) with a projection opening (2) for light projection. The body (1) encloses at least a light source (7), a scanning unit (8) and a deflection unit (3). The deflection unit (3) is mounted movable between an extended position and a non extended position. The scanning unit (8) is arranged and designed to scan a deflection area of the deflection unit (3) in the extended position with a light beam emitted by the light source (7). In the extended position part of the deflection unit (3) extends through the projection opening (2) to prevent a human eye to come too close to the projection opening (2). In the extended position the deflection unit (3) deflects the light beam from the scanning unit (8) towards a projection area. In the non extended position the deflection unit (3) does not deflect the light beam from the scanning unit (8) through the projection opening (2).

Abstract: An illumination light source uses a beam to scan while a relatively small mirror, such as an MEMS mirror, is oscillated at or in the vicinity of the resonance frequency. In this instance, the scan angle is corrected with the use of a correction optical system for uniform illumination to be achieved.

Abstract: A micro-projector applied to a portable computer includes a projecting device and a clipping structure. The projecting device is capable of communicating with the portable computer through signals and projecting a projection light. The clipping structure is capable of clipping the portable computer selectively. The projecting device is disposed on the clipping structure.

Abstract: The present invention relates generally to wavelength conversion devices and laser projection systems incorporating the same. According to one embodiment of the present invention, wavelength conversion devices are provided without limitation of their field of use to laser projection systems. For example, the wavelength conversion device may comprise an axial waveguide portion and a pair of lateral planar waveguide portions confined between a pair of relatively low index cladding layers. The effective index of refraction in the axial waveguide portion of the waveguide region and the effective index of refraction in the lateral planar waveguide portions of the waveguide region are established such that the relatively low intensity laterally distributed parasitic light is characterized by a scattering angle ? that is at least as large as the beam divergence angle of the relatively high intensity light propagating in the axial waveguide portion.

Abstract: Exemplary embodiments provide a projection-type display apparatus, which can address or realize a reduction in weight and size, a reduction in power consumption, and a reduction in noise, and address or realize a reduction in price, and a control method for the projection-type display apparatus, as well as a control program for the projection-type display apparatus. The projection-type display apparatus includes a solid-state light source that emits light, a mirror device that controls an emitting direction of the incident light to thereby subject the incident light to temporal modulation, and a projecting device that projects the modulated light.

Abstract: In a projection-type image display apparatus, comprising an enlarged projection optical unit, which is configured to project the lights from the light source unit onto the display portion, enlargedly, the enlarged projection optical unit, further comprises: a projection lens for projecting the image on the image display element, enlargedly, and a reflection mirror having a reflection surface made up with a freely curved surface, and the image display element has a display surface larger than the display portion, when a whole body thereof is projected on the display portion, through the enlarged projection optical unit, to be displayed by projection thereof, and the image on the display surface of the image display element is movable, within the display surface of the image display element, so as to project a portion fitting to the display portion, selectively, to be displayed, when projecting it through the enlarged projection optical unit upon the display portion, to be displayed, thereby enabling an install

Abstract: A scan mirror is held steady during a holding period interval between forward and return scans in a lightweight, compact image projection module operative for causing selected pixels in a raster pattern to be illuminated to project an image in color.

Abstract: Aspects of the invention can provide a lamp device that is capable of avoiding concentration of stresses in a sub-mirror fixing portion of an arc tube. The lamp device can include an arc tube provided with a bulb portion encapsulating inside a pair of electrodes, and a pair of sealing portions formed continuously from the bulb portion and sealing inside electrode axes having the electrodes at tip ends and conductor foils to bring the electrode axes into conduction, a main reflection mirror, to which the sealing portion is fixed, to reflect lights emitted from the arc tube toward an illuminated region, and a sub-mirror fixed to the sealing portion in such a manner that a reflection surface opposes the main reflection mirror with the bulb portion in between. The sub-mirror can be bonded with a bonding agent to a surface region of the sealing portion present in a direction moving away from the bulb portion in reference to a position corresponding to a termination of the electrode axis.

Abstract: A light assembly includes a heat-dissipating device, a light-emitting device, and a reflector. The heat-dissipating device defines an accommodating space. The light-emitting device is disposed in the accommodating space. The reflector serves to reflect light emitted by the light-emitting device, extends into the accommodating space, and surrounds the light-emitting device.

Abstract: A three dimensional display apparatus includes a three dimensional shape reconstruction apparatus, a reflecting device, a controller and a projecting device. The three dimensional shape reconstruction apparatus reconstructs a target three dimensional shape. The reflecting device reflects projection light from above the three dimensional shape reconstruction apparatus, to side faces of the three dimensional shape reconstruction apparatus. The controller controls the three dimensional shape reconstruction apparatus based on three dimensional shape information. The projecting device projects a surface image of the top face of the target three dimensional shape onto the top face of the three dimensional shape reconstruction apparatus. The projecting device projects surface images of the side faces of the target three dimensional shape onto the side faces of the three dimensional shape reconstruction apparatus through the reflecting devices.

Abstract: The present image display device is an image display device that scans laser beams emitted from light sources 101, 102 and 103 to form an image on a projection surface, and includes laser beam diameter-converting optical systems 104 that shape a beam waist of a laser beam, and horizontal scanner 106 and vertical scanner 107 for scanning a laser beam. Beam diameter-converting optical systems 104 adjust the beam diameter at the position of mirror 26, which is a beam deflector for scanner 106 and 107, to be smaller than the mirror diameter. Also, beam diameter-converting optical systems 104 shape beam waist 110 so that a full width at half maximum of the intensity, which corresponds to beam diameter 114 or 116, is always smaller than pixel pitch 115 or 117 in projection range 118 defined between first projection surface 112 and second projection surface 113.

Abstract: A long-life high-pressure discharge lamp can (i) suppress damage to sealing portions, especially at an initial stage of the accumulated lighting time, (ii) allow for easy assembly of components such as electrodes and (iii) prevent deformation/ripping of metallic foils. An arc tube is a glass enveloping vessel with electrodes arranged therein, and includes: a light emitting portion in which materials are enclosed and a discharge space is formed; and sealing portions provided at ends of the light emitting portion. Each electrode includes an electrode bar whose first end is in the discharge space, and whose second end is in the corresponding sealing portion and connected to a metallic foil. The second end of each electrode bar is partially wrapped around by a sleeve-like metallic cover foil that has a cut-out section positioned over a joining area where the second end of each electrode bar is joined to the metallic foil.

Abstract: An illuminating unit with a compact design capable of improving collimating characteristics of beams emitted from a plurality of light sources positioned at different locations, and a projection-type image display apparatus employing the illuminating unit. The illuminating unit includes a base, a plurality of light sources to emit beams of different wavelength bands, and at least one color filter with a predetermined curvature to reflect one or more beams of predetermined wavelengths from among the beams emitted by the plurality of light sources such that the reflected one or more beams propagate in a first direction and to pass one or more remaining beams of other wavelength bands. The projection-type image display apparatus includes the illuminating unit, an optical integrator, an image-forming system, a beam splitter, and a projection lens.

Abstract: A projector includes a display screen, an imaging system adapted to provide an optical image, a reflector arranged on a transmission path of the optical image, and an optical transmission medium disposed inside the refraction space. The refraction space is formed between the reflector and the display screen. The optical image travels through the optical transmission medium by the reflection of the reflector and is transmitted to the display screen. A refractive index of the optical transmission medium is not equal to one.

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

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

Abstract: An image display apparatus and an image display method, by which a desired image formation state on a retina can be constantly maintained, are provided.

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 projection display device includes a three-color LED source having a red LED, a green LED and a blue LED, a light pipe for making uniform illumination distribution of light emitted from the three-color LED source, an optical lens for making the light from the light pipe into parallel light, and a light modulation element for modulating the light from the optical lens. The optical lens includes a first toroidal lens element provided with a first entrance face on which the light whose angle with respect to an optical axis is a predetermined angle is incident to image the light, and a first exit face which emits the light incident from the first entrance face, and a second lens element provided with a second entrance face which is adjacently disposed to the first exit face in an optical axis direction.

Abstract: The projection image display apparatus includes an image light generator and a projection optics. The projection optics includes a reflection mirror. The projection image display apparatus includes a motion sensor configured to detect a person being close to a projection region and an image controller configured to control an image to be displayed on a projection region depending on a detection result from the motion sensor.

Abstract: A display system (100, 200, 300, 350, 400, 450) for displaying an image is described. The display system (100, 200, 300, 350, 400, 450) typically comprises one or a plurality of individual light sources (102) and a light collecting stage (110, 210, 310, 410) which comprises a separate light collecting sub-system associated with each light source (102), or group of light sources (102). The display system (100, 200, 300, 350, 400, 450) typically comprises at least one light modulator (120) which is operable to modulate light received from the light collecting stage (110, 210, 310, 410) according to an image which is to be displayed. Finally a projection stage (130) is provided for projecting the image, typically on a projection screen. The present invention also relates to a corresponding method. The present invention is especially useful with light sources having a packaging around the light emitting surface such that the light sources cannot be physically placed adjacent to each other.

Abstract: A method for forming a stereoscopic image forms separate left-eye and right-eye images in a repeated cycle that forms the left-eye image by providing data for lines of the left-eye image, ordered in sequence from a first to a second edge of an image frame, then forms successive lines of modulated light according to the ordered sequence by progressively scanning lines of modulated light across a display surface by rotating a scanning element forward from a first to a second position. The right-eye image is formed by providing data for lines of the right-eye image, ordered in sequence from the second to the first edge of the image frame and forming successive lines of modulated light, progressively scanning the lines of modulated light across the display surface by rotating the scanning element in reverse from the second to the first position. The left-eye image is distinguished from the right-eye image.

Abstract: Improved apparatus and methods for displays are disclosed that utilize light concentration array between mechanical light modulators and the viewing surface of the display. The light concentration array includes an array of optical elements that concentrate light on respective ones of the light modulators to maximize the contrast ratio and off axis viewing of the display.

Abstract: An optical projection apparatus including an illumination system, a reflective light valve, an imaging system, and a reflective component is provided. The illumination system is suitable for providing a light beam and the reflective light valve is disposed on a transmission path of the light beam. The reflective light valve is used for converting the light beam into an image. In addition, the imaging system is disposed on the transmission path of the image. The reflective component is disposed both between the reflective light valve and the imaging system and between the reflective light valve and the illumination system, and disposed on the transmission path of the light beam and the image. The reflective component is used for reflecting the light beam onto the reflective light valve, and then reflecting the image produced by the reflective light valve into the imaging system.

Abstract: The present invention provides an image display apparatus including a spatial light modulating element formed with a plurality of light modulating elements for each modulating light from a light source and arranged in a row or a plurality of rows, a projection optical system for forming a first image on a basis of the light modulated by the spatial light modulating element, light deflecting means for forming a second image by reflecting the first image formed by the projection optical system so as to scan the first image in a direction orthogonal to a longitudinal direction of the first image, which is a longer direction of the first image, a magnifying and projecting system for magnifying the second image and projecting the second image on a screen, and detecting means for detecting intensity of the light modulated by the spatial light modulating element and reflected by the light deflecting means via the projection optical system, the detecting means being disposed at a position that the light reflected fro

Abstract: A projection lens unit and a thin projector using the same are disclosed. The projection lens unit includes a plurality of lens sets for emitting light carrying an image, and a reflector arranged between adjacent ones of the lens sets or at a downstream end of the lens sets, and adapted to change a direction of light incident on the reflector.

Abstract: Disclosed in a laser projector to display an image by projecting a laser beam from a laser light source to a projection screen including an electromagnetic driven scan mirror to scan the laser beam from the laser light source, a detection unit to detect a back EMF which is generated by a drive of the electromagnetic driven scan mirror at a time of start-up of the laser projector, a first determination unit to determine whether a value of the back EMF which is detected by the detection unit exceeded a predetermined threshold or not and a light source control unit to start a lighting of the laser light source when the value of the back EMF is determined as exceeding the predetermined threshold by the determination unit.

Abstract: There is disclosed a lamp module, in particular for projectors for data or video projection, having at least one AC burner that is designed for AC operation, is inserted into a reflector and has a discharge vessel with two burner shafts, arranged diametrically relative to one another that carry a reflector electrode and a front electrode, it being possible for the light emitted by the AC burner to be fed to an optical system via the reflector. According to the invention, the front electrode has a large surface by comparison with the reflector electrode, such that said surface is more resistant to retroreflected light.

Abstract: An image projection system (100) has a laser (102, 104, 106) providing at least one beam (103, 105, 107) to a scan mirror apparatus (130) for scanning the at least one beam (103, 105, 107) in two orthogonal directions (404, 406). The scan mirror (130) includes an oscillating portion (204, 904) disposed contiguous to a frame (202) and includes a reflective portion (218, 918) capable of reflecting the beam (103, 105, 107). A light source (502, 602, 702, 802) provides light to the scan mirror (130); and circuitry analyzing the light reflected to determine the position of the oscillating portion (204).

Abstract: An optical reflection device includes a mirror adapted to reflect light thereon, a first meander vibration beam supporting the mirror rotatably about the first rotation axis, a movable frame connected to the first meander vibration beam, a second meander vibration beam supporting the movable frame rotatably about a second rotation axis, and a supporter connected to the second meander vibration beam. The first meander vibration beam meanderingly extends along a first rotation axis, and has a first end and a second end opposite to the first end. The movable frame is connected to the second end of the first meander vibration beam. The second meander vibration beam extends meanderingly along the second rotation axis perpendicular to the first rotation axis, and has a third end and a fourth end opposite to the third end. The supporter is connected to the fourth end of the second meander vibration beam. The mirror is coupled to the movable frame only via the first meander vibration beam.

Abstract: In a method for driving a micro mirror such as MEMS mirror and a display apparatus using the method, there are provided a mirror driving unit for driving the micro mirror which operates in a resonant mode and a nonresonant mode, a driving-condition setting unit for setting a mirror driving condition, a switching unit for switching on/off a mirror driving signal in the nonresonant mode, and a look-up table for indicating the relationship of a mirror response with respect to the driving condition already known in advance. The switching unit controls the transmission of the nonresonant-mode mirror driving signal while grasping the mirror response state with respect to the mirror driving signal, thereby finely increasing and decreasing a driving torque for the micro mirror. This fine increase and decrease allows the micro mirror to be fluctuated stably, and a further enhancement in the fluctuation rate.

Abstract: In a projection type image display apparatus, for enlarging an image on a image display apparatus 1 by means of a projection lens 2, thereby projecting the enlarged image onto a screen 6, obliquely, being inclined thereto, between the projection lens 2 and a rear-surface mirror 5, there are disposed free shaped surface mirrors 3 and 4, each having a free shaped surface for compensating a trapezoidal distortion due to oblique projection of the enlarged image. The surface configuration of the free shaped surface mirror is so shaped as to satisfy a following equation: |L1?L2|>1.4·Dv if assuming that a distance for a light beam of an upper end of the enlarged image to reach the screen after being reflected upon a free shaped surface is “L1”, a distance for a light beam of a lower end of the enlarged image to reach the screen after being reflected upon the free shaped surface is “L2”, and a distance from an upper end of an image on the screen to a lower end thereof is “Dv”.

Abstract: A projector includes a light source, a light modulator that modulates the light flux emitted from the light source in accordance with an image signal to form image light, a projection optical apparatus that enlarges and projects the image light, a reflection section having a reflection surface disposed along the direction in which the projection optical apparatus outputs the image light, the reflection surface reflecting the image light, and an adjustment section that adjusts the inclination angle of the reflection section with respect to the direction in which the image light travels.

Abstract: A light source comprising a prismoidal housing with inclined sides of a flight of steps and with a closed smaller base and an open larger base. The entire inner surface of the housing is made of an optically reflective material. A plurality of light emitting elements are arranged on the smaller base of the prismoidal housing and the respective risers of the steps of each flight such that the plurality of light emitting elements emit rays of light toward the open large base of the housing.

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: Provided is a projection optical system including a first part which projects an image; a second part having an image forming device which forms an image using a light and emits the image to the first part, and having an axis angled toward an axis of the first part; a third part including at least one light source, which emits the light, and having an axis angled toward the axis of the second part; and a deflector which guides the light emitted from the third part toward the second part, wherein a pupil plane of the second part is located between the first part and the second part, and a cross-point between the axis of the first part and the pupil plane of the second part is separated from a cross-point between the axis of the second part and the pupil plane of the second part.

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: There is provided a projected image display unit characterized by a display surface configured to display an image; projection means for projecting the image onto the display surface; and image capturing means for performing image capturing on the display surface, the image capturing means being placed on the same side of the display surface as the projection means, wherein the image capturing means is placed at a position so that the symmetrical position of the projection means with respect to the display surface is out of the range of the angle of view of the image capturing means.

Abstract: A light pipe assembly includes a lens set and a holder. The lens set includes a first lens, a second lens, a third lens, and a fourth lens. The first lens has a first surface and a fifth surface adjacent to the first surface. The second lens has a second surface and a sixth surface adjacent to the second surface, and the fifth surface covers the second surface. The third lens has a third surface and a seventh surface adjacent to the third surface, and the sixth surface covers the third surface. The fourth lens has a fourth surface and an eighth surface adjacent to the fourth surface. The seventh surface covers the fourth surface and the eighth surface covers the first surface. Furthermore, the holder is used for encompassing and abutting the lens set.

Abstract: An image display device comprises an optical imaging arrangement for providing image information to illumination light and for transmitting the light as an optical image signal; a display for receiving the optical image signal and for displaying an image based on the image information; and a projecting optical arrangement including a reflecting part having a reflecting surface for reflecting the optical image signal, and a refracting optical part having a refracting surface for projecting the optical image signal onto the reflecting part. At least one of the reflecting surface and the refracting surface is aspherical.

Abstract: A displaying optical system is disclosed, which is capable of reducing a speckle noise. The displaying optical system comprises a light source emitting coherent light, a scanning device scanning the light, a first optical system causing the light from the scanning device to form an intermediate image, a second optical system causing the light from the intermediate image to form an image on a real display surface, and an optical element arranged between the first and second optical systems. The optical element widens the divergence angle of the light emerged from the optical element toward the second optical system more than the incident angle of the light on the optical element from the first optical system.

Abstract: An image presentation device (100) incorporates an optical combiner (130) that utilizes a multi-state optical switch (131, 137) for use with a plurality of colored light sources (122, 124,126). The switch (131,137) includes an electronically switchable holographic optical element HOE (131) having a first and a second mode of operation. Light from first and second light sources (124, 126) passes through HOE (131) in a diffracted manner in at least one of the first and second modes of operation. Light from a third light source (122) is reflected by a reflector (137) in a third mode of operation. The combiner (130) operates to combine light from the various light sources (122, 124, 126) into a common light path.

Abstract: A reflector used in combination with a light emitting portion that emits light and disposed around a central axis on which the light emitting portion is disposed includes a curved reflection section having the substantially same shape as that of a surface of revolution around the central axis, the curved reflection section reflecting light from the light emitting portion, and a flat deflection section formed on a flat surface positioned closer to the central axis than the surface of revolution, the flat deflection section deflecting the light from the light emitting portion forward. The flat deflection section has a plurality of structural members formed on the flat surface.

Abstract: An enlarging optical unit receives laser light emitted from a laser light source, enlarges a light flux of the received laser light to have a diverging angle corresponding to a swing angle of a scanning mirror and provides it to the scanning mirror.

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 themself in the mirror when the screen is transparent, and an image can be projected when the projection screen is made to be substantially translucent.