Class / Patent application number | Description | Number of patent applications / Date published |
353084000 | COLOR FILTER | 74 |
20080225240 | PROJECTION SYSTEM AND PLASTIC COLOR WHEEL ASSEMBLY THEREOF - A plastic color wheel assembly includes a motor and a color filtering plate. The color filtering plate is disposed at one side of the motor and is made of plastic A projection system including the plastic color wheel is also disclosed. | 09-18-2008 |
20080278694 | COLOR WHEEL MODULE AND PROJECTION APPARATUS USING THE SAME - A color wheel module including a motor, a filter unit, and a magnetic sensor is provided. The motor has a rotating unit. An index mark is disposed on the rotating unit. The filter unit is connected to the rotating unit. The magnetic sensor is disposed adjacent to the motor. The magnetic sensor is adopted for sensing the change of the magnetic field caused by the index mark rotating with the rotating unit. Further, a projection apparatus with the color wheel module is provided. | 11-13-2008 |
20080291403 | IMAGE PROJECTION APPARATUS AND OPERATION METHOD THEREOF - An image projection apparatus controls to vary at least one of current, voltage and power of a discharge lamp for each color segment by means of at least two control signals. When the discharge lamp reaches the stable state after turned on, the discharge lamp exhibits the constant voltage characteristic and an amount of light emitted from the lamp is varied in accordance with current or voltage applied thereto. The light amount of the lamp is varied to at least 3 stages simultaneously in accordance with an image signal in synchronism with color to be emphasized and weakened in each color (e.g. red, blue, green and white). | 11-27-2008 |
20090009730 | Light Recycling in a Micromirror-Based Projection Display System - A digital micromirror projection display system is disclosed in which “off” pixel light is recaptured and recycled. In the disclosed system, a digital micromirror device directs incident light for “on” pixels in the image to be displayed through projection lenses to a projection screen. The digital micromirror device directs incident light for “off” pixels back toward the light source for recapture by a light integrator. Both the incident and projected light can pass through a rear group of projection lenses, with the first projection lens being disposed near the digital micromirror device. A mirror directs the incident light toward the digital micromirror device, and the “off” pixel light from the digital micromirror device toward the light integrator. As a result, “off” pixel light can be recycled without degrading image contrast, in a manner that can place fast projection lenses close to the digital micromirror device to save cost. | 01-08-2009 |
20090027630 | One-Way Display Using Color Filter - A one-way display system includes a transparent screen and a transparent color filter. An image is emitted by the screen or projected onto the screen. The image is formed from a combination of colored lights. Instead of spanning all the wavelengths of each color, each light only spans a narrow band of the color. The color filter removes the narrow band so the image is only visible from one side of the screen. As the color filter removes only the narrow band, one can still look out and see objects on the other side of the screen minus the colors of the narrow band. | 01-29-2009 |
20090027631 | ILLUMINATION SYSTEM - An illumination system includes a first light source, a second light source, a light-uniforming component and a color wheel. The first light source is disposed at a side of the color wheel and provides a first light beam, and the second light source is disposed at another side of the color wheel and provides a second light beam. The light-uniforming component has a light incidence end and a light emitting end opposite to the light incidence end, and the first light source and the second light source are disposed beside the light incidence end. The color wheel includes a plurality of filter units with different colors, each includes a transmissive portion and a reflective portion for respectively making a part of the first light beam pass through to reach the light incidence end, and reflecting a part of the second light beam to reach the light incidence end. | 01-29-2009 |
20090046256 | PROJECTOR AND PROJECTOR CIRCUIT BOARD THEREOF - One embodiment of the invention discloses projector circuit boards comprising an image receiving terminal, a central processing unit, a motor driving module, a DMD and a DMD control module. The image receiving terminal receives an image signal and transmits the received image signal to the central processing unit. The central processing unit processes the received image signal. The motor driving module drives a motor on the basis of the processed image signal to rotate a color wheel to generate a colored beam. The DMD, comprising a plurality of micro-mirrors, is used in reflecting the colored beam, transforming the colored beam into an image beam, and transmitting the image beam to a projection lens to project an image. The rotation angles of the micro-mirrors are controlled by the DMD control module coupled between the central processing unit and the DMD. The projector circuit board is perpendicular to a light path of the projection lens. | 02-19-2009 |
20090051884 | PROJECTION APPARATUS - A projection apparatus including an illumination system, a reflective light valve, a projection lens, and a color filter is provided. The illumination system has a light source for providing an illumination beam, and the reflective light valve is disposed on the transmission path of the illumination beam. The reflective light valve has a plurality of pixels arranged in an array for converting the illumination beam into an image, and the projection lens is disposed on the transmission path of the image. The color filter is disposed between the light source and the reflective light valve and on the transmission path of the illumination beam. Moreover, the color filter includes a transparent substrate and a color filter array disposed on a first surface of the transparent substrate. The color filter array includes a plurality of filter patterns, and each of the filter patterns corresponds to one of the pixels, respectively. | 02-26-2009 |
20090096997 | Optical Seaming Adjuster - A structure to adjust optical seaming filters in the z-direction is provided. The adjuster structure uses 5 degrees of freedom to individually adjust a filter on a projector in the z-direction to optimize the projected seam. A set of common identical filters may be used with these adjuster structures and still produce a set of filters that are unique to each projector. The present invention allows the filters to be adjusted in multiple dimensions so the specifications of a particular filter can be relaxed since the adjuster can provide the required unique properties. | 04-16-2009 |
20090109407 | PROJECTOR - A projector includes a light-source unit, a color wheel, and a connecting portion. The light-source unit with a first support structure is configured for providing light beams. The color wheel includes a color filter, a rotating portion, a motor and a second support structure. The color filter is rotatable together with the rotating portion driven by the motor, which is fixed on the second support structure. The connecting portion is configured for connecting the first and second support structures together and aligning the light-source unit with the color wheel. | 04-30-2009 |
20090109408 | LIGHT-FILTERING MODULE AND PROJECTING SYSTEM APPLIED THEREWITH - A light-filtering module includes a light-source module, a dichroic mirror and a first image unit. The light-source module outputs a light beam. The dichroic mirror divides the light beam into a first colored light and a dual colored light. The first image unit provides the first colored light with image information. The light-filtering module includes a light-filtering unit and a driving unit. The light-filtering unit located between the dichroic mirror and the first image unit is located at a light path of the first colored light. The driving unit includes a coupling element coupled to the light-filtering unit and a driving element utilized to drive the coupling element. The driving element drives the light-filtering unit, switching between a first status and a second status by the coupling element, and a wide-wavelength spectrum and a narrow-wavelength spectrum are provided when the light-filtering unit is in the first and second statuses, respectively. | 04-30-2009 |
20090115973 | DETECTING SYSTEM AND METHOD FOR COLOR WHEEL - A detecting system includes a light source, a dichroic prism, a light sensing unit, a processing unit, and a display device. The light source is configured for emitting light to color segments of a color wheel to be checked to generate separated color lights in a sequence according to that of the color segments of the color wheel. The dichroic prism is configured for receiving the sequenced color lights and transmitting the color lights therefrom. The light sensing unit is configured for detecting the sequenced color lights transmitted from the dichroic prism and generate corresponding signals. The processing unit is configured for receiving the signals from the sensing unit, and interpreting the signals as displayable sequence information of the color segments. The display device is configured for displaying the sequence information. | 05-07-2009 |
20090122273 | COLOR WHEEL FABRICATION - A pressure sensitive adhesive (PSA) is used to attach a plurality of wedge-shaped glass filter segments on a first side to a hub during the color ring build portion of the color wheel fabrication process. A strong adhesive, such as epoxy, is then used to adhere a second side of the filter segments directly to a turning surface of a motor, completing the color wheel fabrication. The epoxy is cured if necessary. The pressure sensitive adhesive can temporarily align the plurality of color filter segments in an alignment. The adhesive between the filter segments and the turning surface can then permanently bond the color filter segments in the alignment. | 05-14-2009 |
20090147223 | PROJECTION SYSTEM AND METHOD FOR OPERATING A DISCHARGE LAMP - A projection system and a method for operating a discharge lamp are described. The protection system comprises a discharge lamp | 06-11-2009 |
20090244494 | PROJECTION TYPE DISPLAY APPARATUS - A projection type display apparatus includes: a rotary color filter | 10-01-2009 |
20090244495 | COLOR WHEEL HAVING A PLURALITY OF SEGMENTS AND PROJECTOR EMPLOYING THE SAME - A projector includes a light source unit for emitting white light, a color wheel | 10-01-2009 |
20090273763 | COLOR WHEEL - A light fixture having at least one light source for generating a beam of light, a plurality of color filters are rotatable into position to intercept the light beam. The color filters are fixed to the color wheel by a central spring which has a number of radial protruding tongues for fixation of the color filters. The color filters are removable yet are secured in a correct position by radial protrusions formed between the color filters an circular outer protrusion located outward of the color filters so as to form a cavity that surrounds the color filter at both sides as well as at outward. Inward of the color filters, they are fixed by the protruding tongue that presses them down and keeps them in place. This leads to a nearly perfect fixation of each color filter, which can be exchanged if necessary. | 11-05-2009 |
20090310090 | COLOR WHEEL AND PROJECTOR HAVING SAME - A color wheel includes a motor, a carrier, a number of color filter segments, a layer of adhesive, and an ultraviolet (UV) filter. The motor includes a rotor. The carrier is fixed to the rotor. The color filter segments are adhesively attached to the carrier. The ultraviolet filter is placed so that the adhesive is interposed between the UV filter and the carrier. The ultraviolet filter is substantially similar to the color filter segments in shape and size. | 12-17-2009 |
20100014057 | COLOR WHEEL AND PROJECTOR USING SAME - A color wheel for use in a projector includes a motor having a rotor, a carrier fixed to the rotor, and a color filter attached to the carrier. The color filter includes a substrate, a plurality of first film groups and a second film group formed on the substrate. Each first film group includes a high refraction index film and a low refraction index film that are stacked. The second film group includes a trititanium pentoxide film and a low refraction index film. The second film group is formed in the color filter with a position selected from a plurality of predetermined positions using a thin film design software. | 01-21-2010 |
20100079734 | Projection Apparatus with Filter - A projection apparatus comprising a light source, an image display device and at least one filter device for transmitting a first portion of the radiation from the light source in a first wavelength range in the visible range to the image display device, and for diffusely reflecting a second portion of the radiation in a second wavelength range outside the visible range. | 04-01-2010 |
20100079735 | Circuit Arrangement and Method for Operating a High-Pressure Discharge Lamp - A circuit arrangement ( | 04-01-2010 |
20100141903 | DRIVE FOR LIGHT FORMING MEANS - A drive, primarily for an optical light forming device, which light forming device can be used in a projector, which light forming device comprises an at least partly open area for light, where at least two light forming devices cooperate in a light path for forming the light, which light forming devices are rotated around a common axis in and out of the light path. To achieve opposite synchronous movement of light forming means, the light forming devices are rotated equal in opposite directions around the common axis by a common motor. Hereby, it can be achieved that the two light forming devices are rotated synchronously, but opposite in relation to each other. The opposite synchronous movement is very important if the light fainting devices are part of a modern computer controlled projector using step motors. | 06-10-2010 |
20100195062 | DISCHARGE LAMP LIGHTING DEVICE AND PROJECTOR - The polarity of a voltage applied to the electrode pair is inverted by a changing signal generated at every boundary area of each filter color of the color wheel, and also in the blue color region (B) (a, b. c). Herewith, time during which the lamp electrode is positive and that negative is equal to each other every time the color wheel makes two rotations (T), thereby maintaining the heat load to be evenly distributed between both of the electrodes. | 08-05-2010 |
20100231869 | Illuminating system and brightness control apparatus thereof - A brightness control apparatus applied to an illuminating system of a projector includes a plate and a slot portion. The slot portion is formed in the plate for a light beam of the illuminating system passing through. The slot portion has two opposite edges located at two sides of an arc locus. The center of the arc locus is a rotating center of the plate. The distance between the two edges of the slot portion is changed with the arc locus. The arc locus has a start point and an arbitrary point which are relative to the center of the arc locus, so as to form a central angle. The mathematics relationship between the distance of the two edges at the arbitrary point and the central angle is a polynomial function. The degree of the term with the highest degree is equal to or more than six. | 09-16-2010 |
20100238417 | IMAGING DEVICE - An imaging device for projecting an image onto a projection area includes a radiation-emitting component which emits electromagnetic radiation along an emission direction during operation, an image-generating element in the beam path of the radiation-emitting component, a radiation-directing element in the beam path of the radiation-emitting component for directing the electromagnetic radiation onto the projection area, and a radiation exit area, wherein the projection area is offset laterally with respect to the radiation exit area. | 09-23-2010 |
20100283977 | ILLUMINATION SYSTEM AND ILLUMINATION CONTROL METHOD - An illumination system adapted to a projection apparatus is provided, including a light source module, a light color modulating module, and a control unit. The light color modulating module has a plurality of light color modulating units and is disposed in a transmission path of a light beam. The light color modulating module is capable of moving so that the light color modulating units move into the illumination region of the light beam. When the control unit determines that a boundary of any two adjacent light color modulating units has moved into the illumination region of the light beam, the control unit switches the light source module to an off-state. When the boundary of any two adjacent light color modulating units has moved away from the illumination region of the light beam, the control unit switches the light source module to an on-state. An illumination control method is also provided. | 11-11-2010 |
20100315604 | ILLUMINATION SYSTEM, METHOD AND PROJECTION DEVICE FOR CONTROLLING LIGHT EMITTED DURING A SPOKE TIME PERIOD - The invention relates to an illumination system ( | 12-16-2010 |
20110001938 | Optical projection system - An optical projection system includes a bottom cover, a foundation flat plate, at least one supporting element, a light source module, and an optical engine module. The bottom cover includes a bottom plate and two opposite side plates. The side plates are respectively connected with two ends of the bottom plate. The side plates and the bottom plate form an accommodating space. The foundation flat plate located between the side plates is disposed on the bottom plate. The foundation flat plate is apart from the side plates. The supporting element is disposed on the foundation flat plate. The light source module is disposed on the foundation flat plate. The optical engine module is disposed on the supporting element. The foundation flat plate, the supporting element, at least part of optical engine module, and at least part of the light source module are disposed in the accommodating space. | 01-06-2011 |
20110019164 | DYNAMIC PROJECTION ADJUSTING METHOD AND PROJECTION DISPLAY DEVICE - The present invention discloses a dynamic projection adjusting method for a projection display device to display output images. The projection display device includes a light source driven by a periodic pulse signal. The dynamic projection adjusting method includes the following steps: (a) determining a brightness parameter of the output image; (b) adjusting the periodic pulse signal according to the brightness parameter and (c) driving the light source with the periodic pulse signal. | 01-27-2011 |
20110170073 | IMAGE PROJECTOR - The image projector of the present invention includes a lighting device configured to light a high pressure discharge lamp, a rotary color filter, an image display device, and a synchronization device. The rotary color filter is configured to rotate about its axis and is divided into plural segments which are arranged around the axis and transmit lights of different colors. The synchronization device is configured to determine a rotation state of the rotary color filter, and output a synchronization signal to the lighting device on the basis of the determined rotation state. The synchronization signal is kept at ON-level over a time period in which predetermined one of the plural segments moves across the light path. The lighting device includes a time period calculation unit configured to calculate, for each of the plural segments, a time period in which the segment moves across the light path, on the basis of time in which the synchronization signal is kept at ON-level, of central angles of each segment, and of an order in which the plural segments come across the light path. | 07-14-2011 |
20110205502 | PROJECTOR - There is provided a projector at least comprising: a light source; a color wheel; a condensing lens; a spatial light modulator; and a projection optical system, wherein the light source includes a red illuminant and a blue illuminant, and the color wheel includes a disc made of optically permeable materials, the disc being composed of a green-light generating portion, a blue-light generating portion and a blue-and-green light generating portion, the green-light generating portion and the blue-and-green light generating portion each including a phosphor layer. | 08-25-2011 |
20110242502 | LIGHT SOURCE UNIT AND PROJECTOR - A projector is provided which can reduce power consumption while preventing the deterioration of a luminescent material by heat by controlling a luminescent wheel to rotate or stop rotating. The projector of the invention includes a light source unit having an excitation light source, a luminescent wheel on which a luminescent material layer is laid circumferentially which becomes luminous using light emitted from the excitation light source as excitation light and a wheel motor for driving the luminescent wheel, a display device, a light guiding optical system which guides light emitted from the light source unit to the display device, a projection side optical system which projects projection light generated in the display device, and a motor control part which determines whether to stop or drive the wheel motor in such a state that excitation light is shone on to the luminescent material layer by the excitation light source. | 10-06-2011 |
20110255060 | OPTICAL SENSING APPARATUS, FILTER APPARATUS, AND PROJECTOR WITH ANTI-DUST STRUCTURE - An optical sensing apparatus with anti-dust structure, for sensing a rotation device which has a rotation surface rotating along a rotation direction, includes a base, an optical sensor, and a stop block. The stop block is located beside the optical sensor and disposed with the optical sensor on the base in accordance with the order of the rotation direction. A distance between a stagnation surface of the stop block and the rotation surface is shorter than a distance between a sensing surface of the optical apparatus and the rotation surface. When an air flow passes between the stagnation surface and the rotation surface, dust within the air flow could be partially deposited on the stagnation surface so as to reduce the deposition amount of the dust on the sensing surface. A filter apparatus with the optical sensing apparatus and a projector with the filter apparatus are also disclosed. | 10-20-2011 |
20110304830 | COLOR WHEEL, MANUFACTURING METHOD OF THE COLOR WHEEL, AND PROJECTOR INCLUDING THE COLOR WHEEL - There is provided a manufacturing method of a color wheel for a projector. The method includes contacting a phosphor layer contour correcting device on a surface of a color wheel substrate, the phosphor layer contour correcting device having a concavity to form a space that patterns a desired phosphor layer contour, the length of which is constant in a radial direction; injecting phosphor additive resin into the space that is composed of a surface of the color wheel substrate and the concavity of the phosphor layer contour correcting device; maintaining the phosphor additive resin in the space; and heating the phosphor additive resin. | 12-15-2011 |
20120026471 | PROJECTOR, LIGHTING DEVICE FOR HIGH-PRESSURE DISCHARGE LAMP USED IN THE PROJECTOR, AND METHOD FOR LIGHTING HIGH-PRESSURE DISCHARGE LAMP - The projector uses two lamps, which are high-pressure discharge lamps with the same rated power, as light sources. The projector includes: a first alternating-current generator configured to generate a lamp current to be supplied to one of the lamps, based on an input control signal; a second alternating-current generator configured to generate a lamp current to be supplied to the other lamp, based on an input control signal; and a controller configured to control the lamp currents to have a same period and to be out of phase, by inputting a control signal to each of the first and the second alternating-current generators. | 02-02-2012 |
20120033189 | PROJECTOR AND COLOR WHEEL MODULE THEREOF - A color wheel module is provided. The color wheel module includes a stator, a rotor, a color wheel and a sensor. The rotor surrounds the stator, wherein the rotor includes a rotor body, a turn table and a balance yoke, and the balance yoke is disposed on the turn table, and the balance yoke includes an N pole portion and an S pole portion, and the rotor body is tube shaped, and the turn table is disposed on an end of the rotor body. The color wheel is disposed on the rotor. The sensor corresponds to the balance yoke, wherein when the balance yoke is rotated, the N pole portion and the S pole portion are rotated to generate a magnetic field variation, and the sensor outputs an electric signal according to the magnetic field variation to define an initial position of the color wheel. | 02-09-2012 |
20120099083 | COLOR WHEEL UNIT AND PROJECTION SYSTEM USING THE SAME - A color wheel unit according to the exemplary embodiments of the present invention is characterized by: a motor; a substrate rotated by the motor; and a plurality of light emitting diodes (LEDs) mounted on the substrate, wherein the substrate is divided into a plurality of regions, and at least one of the regions is mounted with the plurality of light emitting diodes, and the region mounted with the plurality of light emitting diodes is mounted with light emitting diodes emitting the same color. | 04-26-2012 |
20120170006 | COLOR WHEEL MODULE FOR PROJECTOR - A color wheel module includes a color disc having a plurality color filter segments, a liquid crystal ring, and a controller. Each border is defined between each two adjacent color filter segments, the borders comprising a reference border. The liquid crystal ring is positioned on the color disc to cover the color filter segments. The controller is connected to the liquid crystal ring. The controller includes a synchronizing module and a shading module. The synchronizing module obtains an central angle of the color disc between a light path perpendicularly radiating on the color disc and the border on the reference border. The shading module obtains the central angle. When the central angle is less than a preset angle, the shading module controls the liquid crystal ring to block light from passing through. Otherwise, the liquid crystal ring is controlled to allow light to pass through the color filter segments. | 07-05-2012 |
20120188520 | OPTICAL ELEMENT AND PROJECTION DISPLAY APPARATUS - An optical element includes: a first dichroic mirror; and a pair of second dichroic mirrors, wherein the first dichroic mirror includes a first mirror surface and a first main surface; the pair of second dichroic mirrors each includes a second mirror surface and a second main surface; one second dichroic mirror of the pair of second dichroic mirrors is disposed on the first mirror surface in such a way that the second mirror surface is perpendicular to the first mirror surface; the other second dichroic mirror of the pair of second dichroic mirrors is disposed on the first main surface in such a way that the second mirror surface is perpendicular to the first main surface; and a gradation process for adjusting a spectral characteristic within the first mirror surface is applied only for the first mirror surface. | 07-26-2012 |
20130088692 | ILLUMINATION SYSTEM AND PROJECTION APPARATUS - An illumination system including a light source, a filtering module, a wavelength conversion unit, and a reflection unit is provided. The light source emits an illumination beam. The filtering module is disposed on a transmission path of the illumination beam and includes a plurality of filtering units having different colors. The filtering units move into the transmission path of the illumination beam in turn. Each filtering unit reflects a part of the illumination beam and allows another part of the illumination beam to pass through. The wavelength conversion unit is disposed on a transmission path of the part of the illumination beam reflected by at least one of the filtering units to convert the part of the illumination beam reflected by the at least one of the filtering units into a converted beam. The wavelength conversion unit is disposed on the reflection unit. A projection apparatus is also provided. | 04-11-2013 |
20130114049 | Light source device and projection display method - The present invention discloses a method and apparatus for a projection system using a solid-state light source and a color wheel. A set of primary light sources (such as RGB light source) with a light source controller is utilized to replace the UHP lamp. The color wheel has multiple color filter segments that are sequentially disposed on the path of the light when the wheel rotates. Based on a sync signal received from the rotating color wheel, the light source controller sequentially turns the primary light sources on and off in accordance with the sequence of the color filter segments of the color wheel. During each of the spoke periods, to generate a varying mixture of the two color lights, at least two primary color light sources are turned on simultaneously. | 05-09-2013 |
20130120717 | DISCHARGE LAMP LIGHTING APPARATUS AND PROJECTOR - A discharge lamp lighting apparatus for lighting a discharge lamp in which an electric discharge medium, which contains xenon, is enclosed in an electric discharge container, and a pair of cathode electrode and anode electrode for main discharge is arranged to face each other, comprises a starter for generating dielectric breakdown in the electric discharge container of a discharge lamp, and a power supply circuit for supplying discharge current to the discharge lamp, wherein the power supply circuit has an output current modulation circuit for modulating the magnitude of current passed through the discharge lamp in at least a lighting steady state, according to a modulation signal, and wherein the output current modulation circuit controls speed of change so as to be 2.6 A or less per millisecond in case the magnitude of the lamp current per square millimeter in a cross section of the cathode electrode decreases. | 05-16-2013 |
20130229634 | METHOD AND APPARATUS FOR A SOLID STATE LIGHT SOURCE - A light source device uses a wavelength down conversion material for absorbing an excitation light and generating a converted light, and a color filter for filtering the converted light to generate a different color light as output. The wavelength conversion material is a yellow or green phosphor which absorbs blue or UV light and generates a yellow or green converted light, which has a sufficiently wide spectrum to cover some of the red color region. The color filter only allows the red component of the converted light to be output. This system is more energy efficient than using a red phosphor. This light source may be implemented as a moving phosphor wheel having multiple segments, one of which being the yellow or green phosphor with the corresponding color filter, the other segments being used to generate other colored lights such as green and blue lights. | 09-05-2013 |
20130242273 | LIGHTING APPARATUS FOR GENERATING LIGHT - The invention relates to a lighting apparatus for generating light. A primary light generator generates primary light ( | 09-19-2013 |
20140063470 | COLOR WHEEL DRIVING MOTOR AND DIGITAL-LIGHT-PROCESSING PROJECTOR - A color wheel driving motor includes a magnet arranged radially outward of a rotor holder. The ring-shaped magnet includes n number of N-pole and n number of S-pole and magnetic pole changeover portions arranged between the poles. The magnetic pole changeover portions are arranged at an angular interval of 360°/2n, the n being a positive integer. On an imaginary plane perpendicular to the center axis, a first straight line passing through the center axis and at least one of the 2n magnetic pole changeover portions makes a specified angle θ with respect to a second straight line extending from the center axis toward the ring-shaped magnet. A first mark is arranged in a region of a surface of the ring-shaped magnet where the second straight line overlaps with the ring-shaped magnet, the specified angle θ being equal to or larger than 0° and equal to or smaller than 360°/2n. | 03-06-2014 |
20140078475 | FLUORESCENT WHEEL, LIGHT SOURCE DEVICE AND PROJECTOR - A fluorescent substrate includes a base having a reflective surface and a flat bottom surface, and a fluorescent layer disposed on the reflective surface of the base such that the reflective surface of the base directs, outward from the wheel, fluorescence emitted from the fluorescent layer due to its excitation by exciting light. The reflective surface of the base has an array of minute reflective structures formed thereon so as to reflect, outward from the reflective surface, fluorescence emitted substantially parallel to the flat bottom surface of the base from the fluorescent layer. | 03-20-2014 |
20140104583 | PHOSPHOR COLOR FOIL AND PROJECTION DISPLAY DEVICE INCLUDING SAME - Phosphor color foil | 04-17-2014 |
20140204349 | ILLUMINATION SYSTEM AND PROJECTION DEVICE COMPRISING THE SAME - An illumination system and a projection device comprising the same are provided. The projection device comprises an imaging system and the illumination system. The illumination system comprises a first light source, a color wheel and a reflecting mirror. The first light source provides a first wave band light along a first axial direction. The color wheel rotates around a second axial direction. The first axial direction is perpendicular to the second axial direction. A first wave band transforming area is formed around an edge of the color wheel, and the reflecting mirror is disposed adjacent to the edge of the color wheel. When being projected to the first wave band transforming area, the first wave band light is transformed into a second wave band light by the first wave band transforming area and then the second wave band light is reflected by the reflecting mirror. | 07-24-2014 |
20140293244 | LIGHTING SYSTEM AND DIGITAL CINEMA PROJECTION APPARATUS EMPLOYING SAME - A lighting system for a digital cinema projection apparatus is provided. The lighting system includes an ultra high pressure mercury lamp, a relay lens group, a digital micro display module, an optical filter module, and a projection lens. The ultra high pressure mercury lamp is used for emitting a light beam. The relay lens group is used for receiving the light beam and adjusting an optical path of the light beam. The optical filter module is arranged along the optical path of the lighting system for optically modulating an optical spectrum and/or a white balance of the light beam from the ultra high pressure mercury lamp. The projection lens is used for projecting the modulated light beam as an image beam. | 10-02-2014 |
20140354960 | OPTICAL WHEEL DEVICE AND PROJECTION SYSTEM - There is provided an optical wheel device including a motor, a wheel holding member which is fixed to a motor shaft of the motor and which has a recess portion on a surface which is normal to the motor shaft, an optical wheel which is fixed to a surface of the wheel holding member which is opposite to a surface facing the motor, and a collective lens which is disposed in the proximity to the optical wheel on a side of the optical wheel which is opposite to a side facing the motor, wherein a distal end face of a projecting portion on the wheel holding member which projects towards a side of the collective lens is positioned closer to a side of the motor than a plane of a surface of the collective lens which faces the motor. | 12-04-2014 |
20140362352 | IMAGE PROJECTION APPARATUS - An image projection apparatus includes a light source that emits light; an image generation element to generate an image; an optical radiation system to irradiate the image generation element using the light emitted from the light source; an optical projection system to project the image generated by the image generation element onto a projection face; a color wheel, disposed on a light path of light emitted from the light source, to separate the light while being rotated; a light tunnel to guide light exiting from the color wheel to the optical radiation system; and a shield disposed in a space between the color wheel and the light tunnel in a light radiation direction from which the light from the light source is irradiated. The shield covers at least a part of a side of the light tunnel facing a rotation center of the color wheel. | 12-11-2014 |
20150022787 | LIGHT SOURCE SYSTEM AND PROJECTION SYSTEM APPLIED THEREBY - A light source system and a projection system applied thereby. The light source system includes a light source ( | 01-22-2015 |
20150062543 | LIGHT SOURCE UNIT INCLUDING AN AREA OF LUMINESCENT MATERIAL EMITTING LUMINESCENT LIGHT IN GREEN WAVELENGTH RANGE ON PART OF MEMBER SITUATED ON OPTICAL PATH OF LIGHT IN BLUE WAVELENGTH RANGE AND PROJECTOR - A light source unit includes a solid light emitting element that emits light in the blue wavelength range, a luminous light emitting portion on which a luminescent material layer is laid out, the luminescent material layer using the light emitted from the solid light emitting element as excitation light to emit light in a wavelength range of which wavelengths are longer than a wavelength of the excitation light, and a light transmitting portion that transmits the light emitted from the solid light emitting element, and an area of a luminescent material that emits luminous light in the green wavelength range is provided at part of the light transmitting portion. | 03-05-2015 |
20150077721 | METHOD FOR DETERMINING A PREDEFINABLE WAVE FORM OF A LAMP CURRENT FOR OPERATING A DISCHARGE LAMP OF A PROJECTION ARRANGEMENT, AND PROJECTION ARRANGEMENT - Various embodiments provide a method for determining a wave form of a lamp current for operating a discharge lamp of a projection arrangement having a color wheel and a ballast, such that a polarity of the electrodes is commutated in accordance with a commutation scheme of the wave form. The method involves providing a wave form having a commutation scheme and checking whether operation of the discharge lamp satisfies one criterion relating to a lifetime of the discharge lamp or a flicker amplitude of the projection arrangement. If the criterion checked is satisfied, checking whether operation of the discharge lamp satisfies the other of the two criteria is carried out. If at least these two criteria are satisfied, the wave form is stored in a memory of the projection arrangement and provided as the predefinable wave form at the ballast for the discharge lamp. | 03-19-2015 |
20150098065 | LIGHT SOURCE DEVICE AND PROJECTION DISPLAY DEVICE - A light source device includes a light source and a phosphor substrate. The phosphor substrate includes a substrate part, a first reflection film, a phosphor substance layer, and a second reflection film. The first reflection film is formed on a first place of the substrate part. The phosphor substance layer is formed on a surface opposite to the substrate part of the first reflection film, and emits fluorescence by light from the light source. The second reflection film is formed on a second place of the substrate part, and reflects the light from the light source. A surface of the phosphor substance layer on which the light from the light source is incident and a surface of the second reflection film from which the light from the light source is reflected are in substantially the same plane. | 04-09-2015 |
20150109587 | OPTICAL ELEMENT, LIGHTING DEVICE, AND IMAGE DISPLAY DEVICE - Provided are an optical element, a lighting device, and an image display device, with which the absorption efficiency and the luminance of the excitation light can be improved. This optical element ( | 04-23-2015 |
20150116671 | FLUORESCENCE LIGHT EMITTING ELEMENT, LIGHT SOURCE DEVICE, AND PROJECTOR - A fluorescence light emitting element includes a phosphor layer that includes phosphors and a binder made of an inorganic material. A thermal conductivity B of the binder is larger than 1.88 times a thermal conductivity A of the phosphors. When the volume of the phosphors included in the phosphor layer is X and the volume of the binder included in the phosphor layer is Y, a relationship of X/Y>1/2 is satisfied. | 04-30-2015 |
20150131062 | LIGHT SOURCE APPARATUS AND IMAGE PROJECTION APPARATUS - A light source apparatus includes a light source to emit excitation light; a phosphor as a rotatable wavelength convertor; a motor to drive the phosphor; an excitation light condensing optical system to condense the excitation light emitted from the light source onto the phosphor; and a casing having a closed space to encase the light source, the phosphor, and the excitation light condensing optical system, and at least a part of the motor while a remaining part of the motor being protruded to an external space of the casing. | 05-14-2015 |
20150341608 | PROJECTOR AND LIGHT EMISSION CONTROL METHOD IN PROJECTOR - A projector including: a plurality of light sources; a modulator that modulates light emitted from each of the plurality of light sources; a projection unit that projects the modulated light modulated by the modulator; a storage unit that stores grayscales of the light sources and adjustment values for adjusting the light emission amounts of the light sources in order to make white balance of the modulated light projected through the projection unit in relation to each other; and a light-emission-amount adjusting unit that adjusts the light emission amounts of the light sources based on the adjustment values corresponding to the grayscales of the light sources. | 11-26-2015 |
20150370155 | Projector Using Glass Phosphor As a Color Mixing Element - A projector using glass phosphor as a color mixing element includes: a laser light source capable of producing light; an optical system, the color mixing member, a reflection element and an imaging system disposed on a light transmission path. The optical system includes a color wheel, the light will be converted into light beams of different colors when passing through the color wheel. The color mixing element is located between the laser light source and the optical system and made of glass phosphor, and a glass transition temperature of the glass phosphor being higher than 500° C. The imaging system serves to convert the light beams into an image. The use of the heat-resistant glass phosphor as the color mixing element enables the projector to have a wide color gamut and an adjustable color gamut. | 12-24-2015 |
20160004148 | PROJECTION APPARATUS AND ILLUMINATION SYSTEM - A projection apparatus including an illumination system, a light valve, and an image-forming system is provided. The illumination system includes a first dichroic unit, a second dichroic unit, a third dichroic unit, two wavelength conversion modules, two light sources respectively emitting a first beam and a second beam, and an excitation light source module emitting an excitation beam. The first dichroic unit and the second dichroic unit are disposed on a transmission path of the excitation beam. The two wavelength conversion modules respectively convert the corresponding partial excitation beam coming from the first dichroic unit and the second dichroic unit into two converted beams. The light valve converts the first beam, the two converted beams, and the second beam coming from the third dichroic unit into an image beam. The image-forming system is disposed on a transmission path of the image beam. | 01-07-2016 |
20160010812 | Lighting Device With A Pump Laser Matrix, And Method For Operating Said Lighting Device | 01-14-2016 |
20160026076 | LIGHT-EMITTING APPARATUS AND A RELATED PROJECTION SYSTEM - A light-emitting apparatus and a related projection system. The light-emitting apparatus comprises an excitation light source generating an excitation light and a first supplemental laser source generating a first light; a wavelength conversion apparatus comprising a first wavelength conversion layer for absorbing the excitation light to generate a converted light without absorbing the first light; the wavelength conversion layer receiving at one side thereof the excitation light and the first light and emits at same side at least a portion of the first light; a light guide apparatus comprising a smaller first area and a larger second area, the first light and the excitation light respectively entering the first and second areas via a first optical path, and being respectively guided by the first and second areas to the wavelength conversion apparatus; the second area also guiding the converted light and the reflected first light to a second optical path. | 01-28-2016 |
20160062222 | LIGHT SOURCE APPARATUS AND PROJECTOR USING THE SAME - An excitation light source is configured to emit excitation light. A fluorescent substance plate is configured to be excited by the excitation light and to emit fluorescent substance light having a wavelength different from a wavelength of the excitation light. A condensing optical system is configured to condense the excitation light emitted from the excitation light source to an excitation light irradiation region that is smaller than the fluorescent substance plate, to apply the excitation light to the fluorescent substance plate, and to take in fluorescent substance emission light from the excitation light irradiation region. The excitation light is applied to the fluorescent substance plate such that the excitation light irradiation region is eccentric to the fluorescent substance plate. | 03-03-2016 |
20160077415 | WAVELENGTH CONVERSION MEMBER, LIGHT EMITTING DEVICE, PROJECTOR, AND METHOD OF MANUFACTURING WAVELENGTH CONVERSION MEMBER - A wavelength conversion member includes a substrate, a dichroic mirror layer, an SiO | 03-17-2016 |
20160084478 | ILLUMINATION APPARATUS LIGHT SOURCE APPARATUS USING ILLUMINATION APPARATUS AND IMAGE DISPLAY APPARATUS - An illumination apparatus includes a wavelength conversion element to convert light emitted from a light source into converted light and to emit the converted light and unconverted light, a first optical element including a first region guiding the light emitted from the light source to the wavelength conversion element and a second region preventing the unconverted light from traveling to the light source, and a second optical element to guide the converted light in a direction different from a direction of the light source while guiding the light emitted from the light source to the wavelength conversion element. The second optical element is disposed in an optical path between the first optical element and the wavelength conversion element. The light emitted from the light source is incident on the first region, and the unconverted light is incident on both the first region and second region of the first optical element. | 03-24-2016 |
20160085141 | LIGHT-EMITTING DEVICE AND RELATED PROJECTION SYSTEM - A light-emitting device and a related projection system. Light-emitting devices ( | 03-24-2016 |
20160091782 | LIGHT SOURCE APPARATUS AND PROJECTOR - A light source apparatus includes a light source that outputs excitation light, and a rotating light emitting device in which a wavelength conversion element that emits light when irradiated with the excitation light is provided on a rotating disk. A spot of the excitation light on the wavelength conversion element has a shape that is long in a radial direction of the rotating disk and short in a circumferential direction of the rotating disk. Alternatively, an orthogonally projected length of the spot in the radial direction is greater than an orthogonally projected length of the spot in the circumferential direction. | 03-31-2016 |
20160097514 | LIGHT SOURCE DEVICE AND PROJECTOR - A light source device includes a light source that emits light including light having a wavelength in the ultraviolet region, a first filter that removes light of a particular wavelength region of the ultraviolet region among light from the light source and that transmits light of another wavelength region, a second filter that is arranged on a side of the first filter opposite to that on which the light source is arranged, and that removes light of a wavelength region that is different from the particular wavelength region of the ultraviolet region among the light transmitted by the first filter, wherein the second filter has a half-value wavelength that is shorter than a half-value wavelength of the first filter. | 04-07-2016 |
20160170293 | PROJECTOR AND CONTROL METHOD THEREOF | 06-16-2016 |
20160202467 | ILLUMINATION DEVICE AND IMAGE DISPLAY APPARATUS | 07-14-2016 |
20160202468 | ILLUMINATION DEVICE AND IMAGE DISPLAY APPARATUS | 07-14-2016 |
20170235216 | LIGHT EMITTING ELEMENT, LIGHT SOURCE APPARATUS, AND PROJECTOR | 08-17-2017 |
20220137495 | Illumination system and projection device - An illumination system includes a light source, a wavelength conversion element and a light guide column. The light source provides an excitation beam. The wavelength conversion element has a wavelength conversion portion for converting the excitation beam into a converted beam. The light guide column is disposed between the light source and the wavelength conversion element and located on a transmission path of the excitation beam. The light guide column has a first end, a second end opposite to the first end, a third end and a fourth end opposite to the third end. The third and fourth ends respectively face the light source and the wavelength conversion element. The third end receives the excitation beam. The excitation beam exits the first or fourth end, and the converted beam enters the light guide column through the fourth end and exits the first end. A projection device is also provided. | 05-05-2022 |