Patent application number | Description | Published |
20080278690 | Polarization Conversion Element,Polarization Conversion Optical System And Image Projecting Apparatus - A polarization conversion element having plural polarization separation sections and plural phase modulation sections is disclosed. A light flux is separated into transmission light (P polarization) and reflection light (S polarization) by being input to a polarization separation section. The reflection light reflected at the polarization separation section is output in the same direction as that of the transmission light by being reflected again at an adjacent polarization separation section at a different position from a position where a light flux is input to the adjacent polarization separation section. The phase modulation section is disposed on an optical path of the transmission light or the reflection light and output light becomes the same polarization. | 11-13-2008 |
20080297895 | REFLECTIVE SCREEN AND DISPLAY SYSTEM - A disclosed reflective screen is configured to display an image projected from a projection device located within a short distance. The reflective screen comprises a first reflective surface configured to reflect, in a substantially same direction, projection light beams projected from a first position, and a second reflective surface configured to reflect, in the substantially same direction, projection light beams projected from a second position different from the first position. | 12-04-2008 |
20080304019 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 12-11-2008 |
20090015801 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 01-15-2009 |
20090015910 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 01-15-2009 |
20090021703 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 01-22-2009 |
20090066919 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAYING APPARATUS - Disclosed is a projection optical system including a projection surface configured such that an image conjugate to an object is projected, plural optical elements having a refractive power, and a deflecting element having no refractive power configured to deflect an optical path of a light beam and to pass the light beam having a deflected optical path between the plural optical elements, wherein a normal line of the projection surface at a center of the projection surface does not pass through the plural optical elements or between the plural optical elements. | 03-12-2009 |
20090103869 | CONNECTING DEVICE, CONNECTING SYSTEM, OPTICAL WAVEGUIDE AND CONNECTING METHOD - There is provided a connecting system including a connecting apparatus that includes (i) a signal transfer path that transfers one of an electrical signal and an optical signal and (ii) a connecting device that connects the signal transfer path to a connection target component in such a manner that a signal is capable of being transferred therebetween, and a connected apparatus that includes the connection target component to be connected to the signal transfer path. Here, the connecting device includes a moving portion that has therein a sealed space. The moving portion moves an end portion of the signal transfer path closer to the connection target component so that the end portion of the signal transfer path is connected to the connection target component in response to an increase in a pressure within the moving portion, and moves the end portion away from the connection target component in response to a decrease in the pressure within the moving portion. | 04-23-2009 |
20090141370 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS - A disclosed projection optical system for projecting and forming an enlarged image of an image displayed in a planar manner as an object includes: a lens system including, from an object side, at least a lens group providing telecentricity to an object space side, a lens group controlling divergence of angles of view, a diaphragm, a lens group converging the angles of view, and a lens group converging and subsequently enlarging the angles of view; and a catoptric system disposed on an image side relative to the lens system and including a mirror having negative power. Each lens group of the lens system and the mirror having negative power share an optical axis and the optical axis is shifted relative to a center of an object surface. | 06-04-2009 |
20090159832 | FLOCCULATING AGENT - Among flocculating agents reacting in a neutral region and also leaving treated water also in neutral region, a flocculating agent is proposed, which can be used simply and may carry out effective cleaning of mud water in particular. | 06-25-2009 |
20090213470 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY DEVICE - A projection optical system, in which a plurality of light flux emitted from one conjugate plane enters another conjugate plane and an image formed on the one conjugate plane is projected on the other conjugate plane, includes: a first optical system including at least one lens; and a second optical system which includes at least two reflecting surfaces with optical power, a normal line of the other conjugate plane from a center of an image projected on the other conjugate plane has no intersection with any space of the first optical system, or the second optical system, or a space between the first optical system and the second optical system, and when a plane defined by a vertical direction of the image projected on the other conjugate plane and an extending direction of the normal line is set as a YZ plane, from the first optical system to the other conjugate plane an optical path intersects only once on the YZ plane. | 08-27-2009 |
20100020367 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - Disclosed is an image reading device configured to read information of an object, including an imaging optical system configured to image an image of an object and an image-capturing device configured to image-capture at least a portion of the image imaged by the imaging optical system, wherein the imaging optical system includes a first optical system configured to image an intermediate image of the object and a second optical system configured to image the imaged image of the intermediate image. | 01-28-2010 |
20100039625 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 02-18-2010 |
20100053737 | VARIABLE MAGNIFICATION OPTICAL SYSTEM AND PROJECTOR - A variable magnification optical system projects an image onto a screen with a sufficient magnification without requiring a large-sized mirror. The variable magnification optical system includes a first optical system through which a light beam modulated with an image signal corresponding to the image is passed; a second optical system disposed downstream of the first optical system in a direction of travel of the light beam along an optical axis; and a reflective optical element having a magnification power that is configured to reflect the light beam from the second optical system toward the screen. A magnification of the image projected on the screen is changed by moving the reflective optical element relative to the object plane, thus changing a distance between the screen and the reflective optical element, while an incident angle of the light beam on the screen is maintained substantially constant. | 03-04-2010 |
20100157421 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTING APPARATUS - A projection optical system comprising a first optical system configured to form a first image conjugated with an object and a second optical system configured to project a second image conjugated with the first image toward a projection surface, in which at least one of the first optical system and second optical system comprises at least one optical element(s) movable relative to the object is provided, wherein an image distance of the projection optical system is changed and a size of the second image is changed, by moving at least one of the optical element(s) relative to the object. | 06-24-2010 |
20100195061 | PROJECTION OPTICAL APPARATUS - A projection optical apparatus capable of providing high image quality and having a reduced size. The projection optical apparatus comprises a light valve and a projection optical system including a first optical system ( | 08-05-2010 |
20110038039 | PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION OPTICAL SYSTEM, MAGNIFICATION PROJECTION APPARATUS, AND IMAGE PROJECTION APPARATUS - A projection optical system for use in an image projection apparatus illuminating a lightbulb forming an image in accordance with a modulating signal with illumination light from a light source is disclosed. The projection optical system includes first and second optical systems arranged along an optical path defining an upstream-downstream direction in the order described from upstream to downstream on the downstream side of the lightbulb. The first optical system includes at least one dioptric system and has positive power. The second optical system includes at least one reflecting surface having power and has positive power. The image formed by the lightbulb is formed as an intermediate image in the optical path, and the intermediate image is magnified and projected. | 02-17-2011 |
20110089983 | LOOP TYPE CLOCK ADJUSTMENT CIRCUIT AND TEST DEVICE - A variable delay circuit applies a variable delay that corresponds to an analog signal to a reference clock so as to generate a delayed clock. A phase detection unit detects the phase difference between the delayed clock and the reference clock, and generates a phase difference signal having a level that corresponds to the phase difference. A counter performs a counting up operation or a counting down operation according to the level of the phase difference signal. A digital/analog converter converts the count value of the counter into an analog signal, and supplies the count value thus converted to the variable delay circuit. The counter comprises: a first counter configured to use a first thermometer code to count the lower group of digits of the count value according to the phase difference signal; a second counter configured to use a second thermometer code to count an upper group of digits of the count value according to the phase difference signal; and a control circuit configured to perform a control operation such that the Hamming distance is maintained at 1 even in a carry operation and a borrow operation of the first counter and the second counter. | 04-21-2011 |
20120019791 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE - A projection optical system includes a first optical system, a second optical system, and first and second reflection mirrors. The first and second reflection mirrors are arranged on an optical path between an image forming element and a reflection surface of the second optical system, so that a direction of an optical path of light beams from the second reflection mirror to the reflection surface contains a component of a direction opposite to a predetermined direction from the image forming element to the first optical system, and a projection image of the image forming element on a conjugate surface, a projection of the reflection surface onto the conjugate surface, and a projection of the image forming element onto the conjugate surface are arrayed in this order on the conjugate surface. | 01-26-2012 |
20120044465 | LIGHT SOURCE UNIT, ILLUMINATION DEVICE, AND PROJECTION DISPLAY APPARATUS - A light source unit includes a cylindrical transparent substrate capable of being controlled to rotate; plural segment regions provided at a cylinder portion of a side surface of the cylindrical transparent substrate; layers of different phosphors arranged on at least two of the plural segment regions, the different phosphors being configured to emit light of prescribed wavelength bands upon receiving excitation light; and an excitation light source provided inside or outside of the transparent substrate, the excitation light source being configured to apply the excitation light to the phosphors. | 02-23-2012 |
20120092628 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTOR - A projection optical system configured to project an image onto a projection surface includes a first optical system including at least one dioptric system and having positive power as a whole; a second optical system including a reflection region and a transmission region; and a third optical system including at least one reflecting surface having power, and having positive power as a whole, wherein light entering the projection optical system passes through the first optical system to have a path thereof bent by the reflection region of the second optical system to be incident on the third optical system, and the light incident on the third optical system has the path thereof bent by the third optical system to pass through the transmission region of the second optical system to be incident on the projection surface. | 04-19-2012 |
20120236266 | IMAGE PROJECTION APPARATUS - An image projection apparatus includes: an optical image generating unit to generate an optical image based on image data; a projection surface; a projection optical system including a plurality of optical elements and configured to form an projected image, onto a projection surface, coupled with the optical image generated by the optical image generating unit; a projected image shifting unit to shift the projected image by changing a posture of at least one of the plurality of optical elements included in the projection optical system; a tilt sensor to detect a posture of the optical element of which posture is changed by the projected image shifting unit; and a trapezoidal distortion correction unit to correct the optical image generated by the optical image generating unit so as to prevent the trapezoidal distortion of the projected image from occurring based on the detection result of the tilt sensor. | 09-20-2012 |
20130010264 | ILLUMINATION APPARATUS AND PROJECTION APPARATUS - An illumination apparatus emits light onto an optical modulation device for forming an image according to a modulation signal and illuminating an object. The illumination apparatus includes a light source; a fluorescent material that emits light of a color different from a color of light emitted by the light source; and a light guiding unit that switches between a state in which the light emitted from the light source is guided to the fluorescent material and a state in which the light emitted from the light source is not guided to the fluorescent material. | 01-10-2013 |
20130021582 | ILLUMINATING DEVICE, PROJECTING DEVICE, AND METHOD FOR CONTROLLING PROJECTING DEVICE - An illuminating device for emitting light onto a light modulating element that forms an image in accordance with a modulation signal and irradiates a target to be illuminated with light, the illuminating device includes a substrate on which equal to or more than two phosphors that emit light with exciting light are formed in a band-like form along a predetermined direction, equal to or more than two light collecting units that are arranged for the respective equal to or more than two phosphors, and collect light components emitted from the respective equal to or more than two phosphors, and a driving unit that drives the substrate in the predetermined direction. | 01-24-2013 |
20130070333 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTING APPARATUS - Disclosed is a projection optical system including a first optical system configured to form a first image conjugate to an object and have an optical axis and a second optical system configured to project a second image conjugate to the first image onto a surface to be projected on, wherein the first image satisfies a condition of: | 03-21-2013 |
20130235356 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE - A disclosed projection optical system projects images on a surface to be projected on. The projection optical system includes a first optical system including at least one refraction optical system and having positive power as a whole, a folding mirror, and a second optical system including at least one reflection surface having power and having positive power as a whole. Further the folding mirror folds a light path from the first optical system to the second optical system, and in a plane including an optical axis of the first optical system and a normal line of the surface to be projected on, the following conditional expressions (1) through (3) are satisfied (1) 0.43≦d | 09-12-2013 |
20130308104 | LIGHT SOURCE APPARATUS AND IMAGE PROJECTION APPARATUS - A light source apparatus includes a first reflector having a first reflection face; a second reflector having a second reflection face, the first reflection face of the first reflector and the second reflection face of the second reflector disposed opposite each other; and a plurality of light sources being disposed around a periphery of the second reflector. Light beams emitted from the plurality of light sources reflect on the first reflector and then reflect on the second reflector. | 11-21-2013 |
20130308106 | PROJECTION OPTICAL SYSTEM - A projection optical system includes first and second optical systems. The first optical system includes a transmissive-refractive element and the second optical system includes a reflective-refractive element. An image formed by a spatial light modulator is projected by the projection optical system on a projection surface. A light beam that travels along an optical path that leads from the second optical system to the projection surface in an optical path between a center of the image formed by the spatial light modulator and the projection surface is projected at an angle with respect to a normal to the projection surface. An optical axis of the first optical system is folded to a folded position by an optical path deflecting unit in an area of the first optical system where the light beam entering the optical path deflecting unit is a converging light beam or a substantially parallel light beam. | 11-21-2013 |
20140002803 | PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTING APPARATUS | 01-02-2014 |
20140036241 | LIGHT DEFLECTOR, LIGHT SOURCE DEVICE, IMAGE PROJECTING DEVICE, AND DISPLAY DEVICE - Disclosed is a light deflector including a light-emitting element configured to emit a light beam with a substantially elliptical cross-sectional shape, and a lens configured to condense light emitted from the light-emitting element, wherein an optical axis of the light-emitting element and an optical axis of the lens are decentered and a longitudinal axis of the light beam with the substantially elliptical cross-sectional shape is arranged in a direction orthogonal to a direction of decentering on the lens. | 02-06-2014 |
20140049755 | ILLUMINATION LIGHT GENERATION APPARATUS - An illumination light generation apparatus includes a light source unit and an emission unit. The light source unit includes first and second light source groups that radiate a plurality of light beams, respectively. The first and second light source groups face each other. The emission unit emits a composite light beam in a predetermined direction and includes a first reflection part that reflects the plurality of light beams radiated from the first light source group, and an emission part that reflects the plurality of light beams reflected from the first reflection part and the plurality of light beams radiated from the second light source group. The emission part generates the composite light beam by reflecting the plurality of light beams radiated from the first light source group and the plurality of light beams radiated from the second light source group in the predetermined direction. | 02-20-2014 |
20140240679 | LIGHT SOURCE UNIT AND IMAGE PROJECTION APPARATUS INCLUDING LIGHT SOURCE UNIT - A light source unit includes a light emitting element supporter to support a plurality of light emitting elements disposed with a dispersed pattern in a two-dimensional direction as a light emitting element assembly, and light emitted from the light emitting element assembly exits to a target. The light emitting element supporter includes a ventilating hole at an inner portion of two dimensional direction of the light emitting element assembly, and cooling air, supplied from a rear side of a light emitting side of the light emitting element assembly, passes through the ventilating hole to the light emitting side of the light emitting element assembly. | 08-28-2014 |
20140240680 | LIGHT SOURCE UNIT AND IMAGE PROJECTION APPARATUS INCLUDING LIGHT SOURCE UNIT - A light source unit includes a light emitting element supporter to support a plurality of light emitting elements disposed with a dispersed pattern in a two-dimensional direction as a light emitting element assembly, and light emitted from the light emitting element assembly exits to a target; a light return member disposed at a position facing a light emitting side of the light emitting element assembly while setting a space with the light emitting element supporter, the light return member returning light emitted from the light emitting element assembly toward at an inner side of two dimensional direction of the light emitting element assembly, and a flow path of the cooling air to pass through cooling air supplied from an air supply unit into the space. | 08-28-2014 |
20140268068 | LIGHT SOURCE UNIT, LIGHTING APPARATUS AND IMAGE PROJECTION APPARATUS - A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system to condense light emitted from the plurality of light sources. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position. | 09-18-2014 |
20140268072 | LIGHT SOURCE UNIT, LIGHTING APPARATUS AND IMAGE PROJECTION APPARATUS - A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system disposed between the first reflector and the second reflector. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position. The light condensing optical system is configured such that the light beam passes through the light condensing optical system at least two times when the light beams reflect between the first reflector and the second reflector. | 09-18-2014 |
20140340649 | LIGHTING DEVICE, PROJECTOR INCLUDING THE SAME, AND LIGHTING METHOD - A lighting device includes a first light source which emits excitation light, a wavelength convertor which generates fluorescence containing at least a first wavelength range and a second wavelength range by excitation with the excitation light, a second light source which emits light containing a third wavelength range different from the first wavelength range and the second wavelength range, an optical path-combining element which combines an optical path for the fluorescence from the wavelength convertor and an optical path for the light from the second light source, so as to guide the combined optical paths to a single emission optical path, and a light separator disposed in the emission optical path, which obtains and emits at least the first wavelength range and the second wavelength range of the fluorescence and at least the third wavelength range of the light from the second light source. | 11-20-2014 |
20150042963 | LIGHT SOURCE DEVICE AND IMAGE PROJECTING APPARATUS HAVING THE SAME - A light source device includes: a first light emitting unit including a light emitting element that emits light having a predetermined wavelength range; a second light emitting unit including a wavelength conversion member that receives the light from the light emitting element and emits light having a different wavelength range different than the predetermined wavelength range; an optical unit configured to define a path of the light emitted from the light emitting element and a path of the light emitted from the wavelength conversion member; an air blowing unit configured to generate a cooling air; and a passage forming member configured to form a passage through which the cooling air flows, the passage being in contact with both of the first light emitting unit and the second light emitting unit. | 02-12-2015 |