Unitary Sheet Comprising Plural Reflecting Areas Patents (Class 359/459)
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Publication number: 20120268814Abstract: A screen which reflects light emitted from a projector includes a light diffusion layer through which light incident from a specific angular region is diffused and transmitted and through which light incident from the other angular region is transmitted straight; area pairs having a mirror forming area and a non-mirror forming area; a light transmissive layer having a back surface, on which the area pairs are disposed, and an opposite surface being bonded to a back side of the light diffusion layer; and a specular reflection film formed on a back surface of each mirror forming area. An inclination of the mirror forming area with respect to a normal line of the screen close to the projector becomes larger than the inclination of the mirror forming area far from the projector within a cross section perpendicular to the mirror forming areas inside the screen.Type: ApplicationFiled: April 18, 2012Publication date: October 25, 2012Applicants: SEIKO EPSON CORPORATION, TOHOKU UNIVERSITYInventors: Tatsuo UCHIDA, Yoshito SUZUKI, Baku KATAGIRI, Toshiaki HASHIZUME, Hiroyuki SHINDO, Osamu ARAKAWA
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Patent number: 8274612Abstract: An LCD television includes an LCD panel including a plurality of LCD units with concave structure, three sides of the LCD unit also include liquid crystal molecule (LCM), all of the first side of the LCD unit constitutes a first LCM array and forms a first display interface, all of the second side of the LCD unit constitutes a second LCM array and forms a second display interface, all of the third side of the LCD unit constitutes a third LCM array and forms a third display interface. The LCD television also includes three signal conversion modules configured to convert three TV program signals into three control signals respectively, three driving modules are configured to drive the three LCM arrays according to the control signals and cause the first display interface, the second display interface, and the third display interface to display corresponding TV programs.Type: GrantFiled: October 25, 2009Date of Patent: September 25, 2012Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Shih-Fang Wong, Xin Lu, Yu-Cui Zhou
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Publication number: 20120236401Abstract: A screen has an incidence plane that reflects a projected light, and, on the incidence plane, a plurality of lens elements are arranged. The plurality of lens elements have quarter-spherical surfaces, and the spherical surfaces are formed so as to face a light source of the projected light. In a portion of the spherical surface, the portion onto which the projected light is projected, a reflecting section that reflects the projected light is formed. This makes it possible to increase the area of the reflecting sections in the incidence plane and thereby increase the brightness of the screen.Type: ApplicationFiled: March 14, 2012Publication date: September 20, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Shinichi YOTSUYA
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Patent number: 8228603Abstract: A screen includes a plurality of structures arrayed in parallel in at least one direction of a first direction and a second direction perpendicular to the first direction on a reference surface parallel to the first direction and the second direction. The structures are arrayed such that at least one of a distance between central positions of the structures adjacent to each other and a size of the structure changes irregularly in at least one direction, in which the structures are arrayed in parallel, of the first and second directions.Type: GrantFiled: April 12, 2011Date of Patent: July 24, 2012Assignee: Seiko Epson CorporationInventors: Akira Shinbo, Ryoji Katsuma
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Patent number: 8218237Abstract: Various embodiments related to rear-projection image display are disclosed. For example, one disclosed embodiment provides a projector for projecting an image and a screen configured to display the image. The screen comprises a filter layer having a light reception side and an image display side. The filter layer includes an array of trapezoidal transmissive elements and an array of trapezoidal absorption elements, where a wider base of each of the trapezoidal transmissive elements faces the light reception side of the filter layer, and where a wider base of each of the trapezoidal absorption elements faces the image display side of the filer layer.Type: GrantFiled: July 21, 2011Date of Patent: July 10, 2012Assignee: Microsoft CorporationInventors: Zhiqiang Liu, Prafulla Masalkar, Karlton Powell
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Patent number: 8197926Abstract: A screen includes a plurality of concave recesses arranged on a flat surface, wherein the recesses are arranged in such a way that the spacing between adjacent ones of the recesses in the radial direction from a reference point located in the flat surface or a plane extended from the flat surface increase with distance from the reference point.Type: GrantFiled: August 3, 2009Date of Patent: June 12, 2012Assignee: Seiko Epson CorporationInventors: Akira Shinbo, Ryoji Katsuma
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Patent number: 8179600Abstract: A screen includes: a plurality of three-dimensional shape units disposed two-dimensionally on a front side of a screen substrate; a reflecting film formed at least on an area corresponding to projection light entering a surface of the plurality of the three-dimensional shape units of the screen substrate; and a light absorbing film formed on an area corresponding to outside light entering the surface of the plurality of the three-dimensional shape units, wherein at least a part of the light absorbing film is formed so as to overlap a part of the reflecting film on the front side of the reflecting film.Type: GrantFiled: August 25, 2009Date of Patent: May 15, 2012Assignee: Seiko Epson CorporationInventor: Koichi Akiyama
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Publication number: 20120113508Abstract: Polarization preserving front projection screens and diffusers provide optimum polarization preservation for stereoscopic 3D viewing, as well as improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed screens direct light from a projector toward viewers within a diffusion locus, while maintaining optimum gain characteristics. More specifically, light incident on a region of the front projection screen from a predetermined projection direction is reflected by an engineered surface to a predetermined diffusion locus after undergoing substantially single reflections. The engineered surface, comprised of generating kernels, is used to optimally diffuse illumination light into a range of viewing angles, within the diffusion locus, with suitable gain profile, while optimally preserving polarization for 3D applications.Type: ApplicationFiled: November 7, 2011Publication date: May 10, 2012Applicant: REALD INC.Inventors: David A. Coleman, Gary D. Sharp
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Patent number: 8169700Abstract: A reflective screen comprising: a projection surface on which an image light is projected, a plurality of unit structures provided on the projection surface, one of the plurality of unit structures being formed of a concavely curved surface or a convexly curved surface, a first reflection portion that reflects the image light incident thereon toward a preset field of view, the first reflection portion being provided on the concavely curved surface or on the convexly curved surface and a second reflection portion that reflects at least a part of the image light incident thereon toward a region outside the preset field of view, the second reflection portion being provided on the concavely curved surface or on the convexly curved surface.Type: GrantFiled: January 20, 2011Date of Patent: May 1, 2012Assignee: Seiko Epson CorporationInventors: Ryoji Katsuma, Akira Shinbo
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Patent number: 8169699Abstract: Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises stripping an optically functional material from a carrier substrate, thus creating engineered particles from the optically functional material. The engineered particles may then be deposited on a second substrate to create a substantially homogeneous optical appearance of the projection screen.Type: GrantFiled: December 22, 2010Date of Patent: May 1, 2012Assignee: RealD Inc.Inventors: Joel Petersen, Christopher Rich, Raymond Jacob Lewandowski, Gary D. Sharp, David Coleman
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Publication number: 20120081782Abstract: A method for providing a projection screen for receiving stereoscopic images may include providing a substrate with a contoured, reflective surface, wherein light reflected from the substrate substantially may undergo no more than a single reflection and may also include coating a first layer on the substrate with a contoured, reflective surface. The first layer may substantially maintain the same optical properties as the substrate without the first layer. The first layer may be substantially conformal to the surface of the substrate and also may be a self assembled monolayer coating which may include at least a functional group that is hydrophobic.Type: ApplicationFiled: September 30, 2011Publication date: April 5, 2012Applicant: REALD INC.Inventors: David A. Coleman, Gary D. Sharp
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Patent number: 8139290Abstract: A two way mirror system usable for an advertisement device includes a half-mirror having a light transmission function and a reflection function. A logo plate in a shape of an engraving or pattern in relief or intaglio is provided on a front face thereof and a two way screen through which a rear projected image can be viewed from both a front and rear face is provided on a rear face thereof. A single advertising device thus provides a logo advertising using a logo plate and reflected outside light during the day and an image advertisement viewable outside during night time, with inside viewing with double the usual brightness of a reflecting screen.Type: GrantFiled: September 15, 2010Date of Patent: March 20, 2012Inventor: Hae-Yong Choi
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Patent number: 8130184Abstract: Various embodiments for image pixel transformation are disclosed.Type: GrantFiled: October 21, 2005Date of Patent: March 6, 2012Assignee: Hewlett-Packard Development Company L. P.Inventors: Grant K. Garner, Masoud K. Zavarehi, Roshan B. Baliga
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Patent number: 8115706Abstract: The present invention represents an object with high-quality texture. A texture image display apparatus includes: a panel display device (20) having a plurality of pixels (21); a lens array (30) having a plurality of lenses for controlling outgoing directions of light outputted from the pixels (21); a pixel data generation part (14) for generating pixel data for each pixel; and a panel driving circuit 15 for driving the panel display device (20) on the basis of the pixel data. One lens (31) is provided for a plurality of adjacent pixels (21), and directs light outputted from these adjacent pixels (21) in directions different from one another. For each pixel (21), the pixel data generation part (14) generates pixel data of different image brightness levels depending on outgoing direction of light, for the same image point in displayed content.Type: GrantFiled: March 20, 2008Date of Patent: February 14, 2012Assignee: Hitachi, Ltd.Inventors: Takafumi Koike, Kei Utsugi, Michio Oikawa, Masami Yamasaki
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Patent number: 8115997Abstract: A projection screen includes: a lenticular layer including rear and front surfaces, the front surface being formed with a plurality of convex microstructures; a reflecting layer formed on the front surface of the lenticular layer and having a plurality of convex surfaces in conformity to surfaces of the convex microstructures; and a diffusion layer disposed on the reflecting layer oppositely of the lenticular layer, and including a plurality of black nanoparticles dispersed therein.Type: GrantFiled: March 30, 2011Date of Patent: February 14, 2012Inventor: Martin Chien
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Patent number: 8111457Abstract: A method of manufacturing a screen having a screen substrate provided with a plurality of three-dimensional shape units disposed two-dimensionally on a front side of the screen substrate, includes: forming a first film by applying a first film forming material to be an antireflection film to at least part of surfaces of the three-dimensional shape units among the screen substrate; and forming a second film by applying a second film forming material to be a reflecting film with a predetermined incident angle to the screen substrate, the reflecting film on at least part of the antireflection film.Type: GrantFiled: July 31, 2009Date of Patent: February 7, 2012Assignee: Seiko Epson CorporationInventor: Koichi Akiyama
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Patent number: 8104895Abstract: A display system includes a projection screen and a projector. The projection screen includes a retarder plate between a polarizer and a transparent screen. The projector projects an image through the polarizer and the retarder plate onto the transparent screen. The image is visible from a first side of the transparent screen but invisible from a second side of the transparent screen because any light passing twice through the retarder plate is blocked by the polarizer.Type: GrantFiled: November 12, 2010Date of Patent: January 31, 2012Inventor: Cang V. Quach
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Patent number: 8107165Abstract: A translucent projector screen on which light from a display unit disposed obliquely forward of the screen is projected, said projector screen integrally includes: a sheet-shaped main body; a plurality of convex lenses integrally formed on a surface of the main body; and a plurality of reflective members disposed on the main body corresponding to the convex lenses and respectively reflecting the display light emitted to the convex lenses in a specific incident angle toward the convex lenses other than the convex lenses to which the display light is emitted. The convex lenses have spherical surfaces or aspheric surfaces so that respectively collect the display light to the reflective members, and emit the display light reflected by the reflective members in a specific output angle.Type: GrantFiled: February 26, 2009Date of Patent: January 31, 2012Assignee: Yazaki CorporationInventors: Hideaki Kageyama, Yoshiyuki Furuya
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Publication number: 20120008201Abstract: A projection screen includes a base sheet, a surface roughness structure, a reflective layer, and a light absorption layer. The base sheet has a first side and a second side opposite to the first side. A plurality of first surfaces and second surfaces are formed on the first side, each first surface faces an optical projection system, and each second surface is disposed between two adjacent first surfaces and forms an angle with respect to a neighboring first surface. The surface roughness structure is formed on at least the first surfaces and capable of diffusing a light beam to a limited extent. The reflective layer is formed on the surface roughness structure and capable of reflecting most of the light beam diffused by the surface roughness structure to a limited extent towards a limited viewing cone, and the light absorption layer is formed on the second surfaces.Type: ApplicationFiled: May 27, 2011Publication date: January 12, 2012Inventors: Tzeng-Ke SHIAU, Ching-Shiang Li, Wei-Chung Chao
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Publication number: 20120008202Abstract: Embodiments of the invention relate to a reflective projection screen for image, and more particularly, to a shape and a fabrication method for a reflective projection screen for a projector having short focal length of short projection distance, and particularly to a reflective projection screen applicable to 2D and 3D. In particular, embodiments of the present invention relates to a reflective projection screen having multi-incident angle wherein every reflection surface is prepared per projection angle of projection image and incident angles are formed differently from each reflection surfaces so that the projection images from different angles are reflected into one direction.Type: ApplicationFiled: July 11, 2011Publication date: January 12, 2012Inventor: Hae-Yong CHOI
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Patent number: 8072681Abstract: Polarization preserving front projection screens and diffusers provide optimum polarization preservation for stereoscopic 3D viewing, as well as improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed screens direct light from a projector toward viewers within a diffusion locus, while maintaining optimum gain characteristics. More specifically, light incident on a region of the front projection screen from a predetermined projection direction is reflected by an engineered surface to a predetermined diffusion locus after undergoing substantially single reflections. The engineered surface, comprised of generating kernels, is used to optimally diffuse illumination light into a range of viewing angles, within the diffusion locus, with suitable gain profile, while optimally preserving polarization for 3D applications.Type: GrantFiled: August 10, 2009Date of Patent: December 6, 2011Assignee: RealD Inc.Inventors: David A. Coleman, Gary D. Sharp
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Patent number: 8023186Abstract: A screen that reflects light from a projection apparatus to present a projected image includes: a screen substrate; and a plurality of spherical microlenses disposed on the front side of the screen substrate, wherein the microlenses are arranged along a predetermined first direction on the screen substrate to form lens rows, and adjacent microlenses in each of the lens rows have different radii of curvature.Type: GrantFiled: November 30, 2009Date of Patent: September 20, 2011Assignee: Seiko Epson CorporationInventors: Ryoji Katsuma, Akira Shinbo, Toshiaki Hashizume
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Patent number: 8004758Abstract: Polarization preserving front projection screens and diffusers provide optimum polarization preservation for stereoscopic 3D viewing, as well as improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed screens direct light from a projector toward viewers within a diffusion locus, while maintaining optimum gain characteristics. More specifically, light incident on a region of the front projection screen from a predetermined projection direction is reflected by an engineered surface to a predetermined diffusion locus after undergoing substantially single reflections. The engineered surface, comprised of generating kernels, is used to optimally diffuse illumination light into a range of viewing angles, within the diffusion locus, with suitable gain profile, while optimally preserving polarization for 3D applications.Type: GrantFiled: August 10, 2009Date of Patent: August 23, 2011Assignee: RealD Inc.Inventors: David A. Coleman, Gary D. Sharp
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Publication number: 20110194178Abstract: A reflective screen comprising: a projection surface on which an image light is projected, a plurality of unit structures provided on the projection surface, one of the plurality of unit structures being formed of a concavely curved surface or a convexly curved surface, a first reflection portion that reflects the image light incident thereon toward a preset field of view, the first reflection portion being provided on the concavely curved surface or on the convexly curved surface and a second reflection portion that reflects at least a part of the image light incident thereon toward a region outside the preset field of view, the second reflection portion being provided on the concavely curved surface or on the convexly curved surface.Type: ApplicationFiled: January 20, 2011Publication date: August 11, 2011Applicant: Seiko Epson CorporationInventors: Ryoji Katsuma, Akira Shinbo
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Publication number: 20110188114Abstract: A screen includes a plurality of structures arrayed in parallel in at least one direction of a first direction and a second direction perpendicular to the first direction on a reference surface parallel to the first direction and the second direction. The structures are arrayed such that at least one of a distance between central positions of the structures adjacent to each other and a size of the structure changes irregularly in at least one direction, in which the structures are arrayed in parallel, of the first and second directions.Type: ApplicationFiled: April 12, 2011Publication date: August 4, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Akira SHINBO, Ryoji KATSUMA
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Patent number: 7990614Abstract: A projection screen is adapted to reflect the projection light generated by a projector. The projection screen includes a light absorbing layer, a light reflection layer connected adjacently to the light absorbing layer, and a light transparent layer. The light transparent layer is disposed on the light absorbing layer and the light reflection layer, and has a total reflection surface, a light emitting surface, and a light incident surface connected adjacently to the total reflection surface. The light incident surface provides a theoretical light convergence point, and the light convergence point and the location of the light reflection layer are in mirror symmetry relative to the total refection surface. The projection light enters into the light transparent layer through the light incident surface for refraction, and travels to the total reflection surface for totally reflection, and then to the light reflection layer for reflecting to the light emitting surface.Type: GrantFiled: October 15, 2009Date of Patent: August 2, 2011Assignee: Coretronic CorporationInventor: Wen-Bin Chou
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Publication number: 20110176209Abstract: A screen fabric includes a stack of a plurality of layers. The plurality of layers include: a first layer that forms a surface layer on which a three-dimensional portion is to be formed; and a second layer that is different from the first layer. The first layer is made of a vinyl chloride resin, and the second layer has a lower hardness than the first layer.Type: ApplicationFiled: December 20, 2010Publication date: July 21, 2011Applicant: Seiko Epson CorporationInventor: Masashi Kitabayashi
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Patent number: 7978406Abstract: A projection screen includes a reflection layer, a light absorbing structure, a plurality of light diffusion layers, and a lens structure. The light absorbing structure is disposed on the reflection layer and has a plurality of apertures. A part of the reflection layer is exposed via the apertures. The light diffusion layers have a first index of refraction. Each of the light diffusion layer is disposed in the corresponding aperture and contacts the corresponding reflection layer exposed via the corresponding aperture. The lens structure is disposed on the light diffusion layers and the light absorbing structure. A light incidence side of the lens structure includes a plurality of convex lenses. The convex lenses are respectively corresponding with the light diffusion layers. The lens structure has a second index of refraction, and the second index of refraction is smaller than the first index of refraction.Type: GrantFiled: October 15, 2009Date of Patent: July 12, 2011Assignee: Coretronic CorporationInventors: Fu-Ming Chuang, Ching-Shiang Li, Chun-Chien Liao
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Patent number: 7961390Abstract: A screen of a projector having a substrate and a plurality of asymmetric optical structures is provided. There is a plurality of light absorbing zones and a plurality of reflective zones alternatively disposed on a surface of the substrate facing the projector. The asymmetric optical structures are disposed on the surface of the substrate and correspond to the reflective zones, respectively. The asymmetric optical structure has a first curved surface and a second curved surface, and the first curved surface protrudes toward the projector for converging an incident light from the projector on the reflective zone, and the second curved surface is disposed at a side of the first curved surface away from the projector for refracting a reflective light from the reflective zones toward the normal direction of the surface of the substrate.Type: GrantFiled: October 6, 2009Date of Patent: June 14, 2011Assignee: Coretronic CorporationInventors: Tzeng-Ke Shiau, Chun-Chien Liao
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Patent number: 7948678Abstract: This invention presents a four-region catadioptric tile. The four-region catadioptric tile includes a first surface, a second surface, and a filler material layer between the first and second surfaces. The four regions includes a first region wherein the first surface is convex and the second surface is convex, a second region wherein the first surface is convex and the second surface is concave, a third region wherein the first surface is concave and the second surface is convex, and a third region wherein the first surface is concave and the second surface is concave. The surface morphology of each of the four-region catadioptric tiles can be repeated across an entire tessellated projection screen or an angularly dependent retroreflector.Type: GrantFiled: February 6, 2010Date of Patent: May 24, 2011Assignee: Merlin Technologies, LLCInventor: Peter Poulsen
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Patent number: 7948679Abstract: A screen includes a plurality of structures arrayed in parallel in at least one direction of a first direction and a second direction perpendicular to the first direction on a reference surface parallel to the first direction and the second direction. The structures are arrayed such that at least one of a distance between central positions of the structures adjacent to each other and a size of the structure changes irregularly in at least one direction, in which the structures are arrayed in parallel, of the first and second directions.Type: GrantFiled: March 10, 2009Date of Patent: May 24, 2011Assignee: Seiko Epson CorporationInventors: Akira Shinbo, Ryoji Katsuma
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Patent number: 7936507Abstract: The invention relates to a screen for projectors which comprises a screen base in which at least two kinds of colorants selected from a colorant having an absorption wavelength region in 400 nm to 440 nm, a colorant having an absorption wavelength region in 470 nm to 510 nm, and a colorant having an absorption wavelength region in 570 nm to 610 nm are carried on the whole image display area of the screen base. Also disclosed are processes for producing the screen and projectors having the screen.Type: GrantFiled: December 4, 2007Date of Patent: May 3, 2011Assignee: Seiko Epson CorporationInventors: Tsuyoshi Sano, Kiyohiko Takemoto
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Patent number: 7931377Abstract: A screen including a first plane and a second plane opposite to the first plane, at least one of which is illuminated with light, includes a reflective portion that reflects the light incident on the first plane, a transmissive portion that transmits the light incident on the second plane toward the first plane, and an optical element that focuses the light incident on the second plane such that the focused light is incident on the transmissive portion.Type: GrantFiled: April 15, 2008Date of Patent: April 26, 2011Assignee: Seiko Epson CorporationInventors: Junichiro Shinozaki, Takashi Nagate, Seiichi Taniguchi
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Patent number: 7929207Abstract: A screen includes a plurality of reflecting portions disposed on a flat surface with a clearance left between one another. The reflecting portions reflect diagonal incident light coming in a predetermined direction other than the normal line direction of the flat surface, and block the diagonal incident light by reflecting the incident light such that the incident light cannot reach each area between the adjoining reflecting portions on the flat surface.Type: GrantFiled: April 2, 2009Date of Patent: April 19, 2011Assignee: Seiko Epson CorporationInventors: Masatoshi Yonekubo, Akira Shinbo
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Publication number: 20110069385Abstract: A screen includes: a screen substrate; a first area disposed on the screen substrate and containing a first main line which has a plurality of first concaves for reflecting light and a first supplementary line which is disposed on the screen substrate at a position adjacent to the first main line and has the same number of second concaves as that of the first concaves formed adjacent to the second concaves, the first main line and the first supplementary line being alternately and repeatedly arranged; and a second area disposed on the screen substrate in a region where an angle of incidence of projection light with respect to the screen substrate becomes larger than in the first area and containing a second main line which has a plurality of third concaves for reflecting light and a second supplementary line which is disposed on the screen substrate at a position adjacent to the second main line and has a larger number of fourth concaves as that of the third concaves formed adjacent to the fourth concaves, thType: ApplicationFiled: September 7, 2010Publication date: March 24, 2011Applicant: Seiko Epson CorporationInventors: Ryoji Katsuma, Akira Shinbo
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Patent number: 7911693Abstract: A method of creating a projection screen includes forming on a substrate a set of reflective areas directed to a first set of angles and forming on the substrate a set of absorptive areas directed to other than the first set of angles.Type: GrantFiled: July 31, 2006Date of Patent: March 22, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Gilbert G Smith, Arthur Piehl, Thomas E Novet
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Patent number: 7911694Abstract: A screen includes: a screen substrate; a first area disposed on the screen substrate and containing a first main line which has a plurality of first concaves for reflecting light and a first supplementary line which is disposed on the screen substrate at a position adjacent to the first main line and has the same number of second concaves as that of the first concaves formed adjacent to the second concaves, the first main line and the first supplementary line being alternately and repeatedly arranged; and a second area disposed on the screen substrate in a region where an angle of incidence of projection light with respect to the screen substrate becomes larger than in the first area and containing a second main line which has a plurality of third concaves for reflecting light and a second supplementary line which is disposed on the screen substrate at a position adjacent to the second main line and has a larger number of fourth concaves as that of the third concaves formed adjacent to the fourth concaves, thType: GrantFiled: September 7, 2010Date of Patent: March 22, 2011Assignee: Seiko Epson CorporationInventors: Ryoji Katsuma, Akira Shinbo
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Patent number: 7898734Abstract: Polarization preserving front projection screens and diffusers provide optimum polarization preservation for stereoscopic 3D viewing, as well as improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed screens direct light from a projector toward viewers within a diffusion locus, while maintaining optimum gain characteristics. More specifically, light incident on a region of the front projection screen from a predetermined projection direction is reflected by an engineered surface to a predetermined diffusion locus after undergoing substantially single reflections. The engineered surface, comprised of generating kernels, is used to optimally diffuse illumination light into a range of viewing angles, within the diffusion locus, with suitable gain profile, while optimally preserving polarization for 3D applications.Type: GrantFiled: January 28, 2009Date of Patent: March 1, 2011Assignee: RealD Inc.Inventors: David A. Coleman, Gary D. Sharp
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Patent number: 7872800Abstract: The invention relates to a device and method for displaying a static or moving picture, wherein the inventive device comprises a laser light source and a screen and is characterized in that said screen has a structure at which the illuminated parts simultaneously reflect or transmit light in different directions inside a beam width.Type: GrantFiled: July 26, 2005Date of Patent: January 18, 2011Assignees: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V., Bremer Institut fur Angewandte Strahltechnik GmbHInventors: Christoph Rickers, Matthias Fahland, Christoph Von Kopylow
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Patent number: 7869126Abstract: A screen includes a screen sheet including a lens array having a plurality of element lenses arranged in a two-dimensional plane on the front side of the screen, a plurality of reflection surfaces disposed on the backside of the lens array, the plurality of reflection surfaces inclined to the two-dimensional plane, and a plurality of scattering portions that scatter the light directed from the plurality of reflection surfaces toward the front side of the screen. At least one of the plurality of element lenses is a combined lens comprised of a set of two lens portions offset from each other obtained by relatively shifting optical axes of the lens portions, and the reflection surfaces correspond to the respective combined lenses.Type: GrantFiled: January 9, 2009Date of Patent: January 11, 2011Assignee: Seiko Epson CorporationInventor: Koichi Akiyama
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Patent number: 7864420Abstract: A screen includes plural three-dimensional portions having a concave shape arranged at a front surface side of a screen substrate, wherein the three-dimensional portions are disposed so that the number of the three-dimensional portions provided in a range of a given length along a first direction on the screen substrate which is determined corresponding to at least either one of a direction of a chief ray and a chief direction of outside light is larger than the number of three-dimensional portions provided in a range of the given length along a second direction crossing the first direction and in which the plural three-dimensional portions are arranged so that at least two three-dimensional portions of the three-dimensional portions provided in the range of the given length along the first direction contact each other.Type: GrantFiled: July 14, 2008Date of Patent: January 4, 2011Assignee: Seiko Epson CorporationInventors: Akira Shinbo, Hiroyuki Shindo
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Patent number: 7859750Abstract: A screen includes a front surface structure section including a lens array having a plurality of element lenses arranged on a two-dimensional plane on a front side of the screen, a rear surface structure section including a plurality of scattering surfaces formed on a rear side of the lens array so as to be tilted with respect to the two-dimensional plane, and adapted to emit projection light, which has been input, towards the front side of the screen while scattering the projection light, and an adhesive layer adapted to bond the front surface structure section and the rear surface structure section to each other, and the rear surface structure section is composed mainly of a plurality of rear surface forming sections different from each other in a pattern of the plurality of scattering surfaces.Type: GrantFiled: January 21, 2009Date of Patent: December 28, 2010Assignee: Seiko Epson CorporationInventor: Koichi Akiyama
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Publication number: 20100321592Abstract: A screen includes: a reflection surface which reflects projection light, wherein a plurality of convexes are disposed on the reflection surface, and each of the convexes contains a spherical surface having a ΒΌ spherical shape, a curved surface having curvature larger than curvature of the spherical surface and disposed along an end of the spherical surface, and a cover surface having a flat surface shape and disposed at an end of the curved surface.Type: ApplicationFiled: June 1, 2010Publication date: December 23, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Toshiaki MIKOSHIBA
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Patent number: 7854513Abstract: A display system includes a projection screen and a projector. The projection screen includes a retarder plate between a polarizer and a transparent screen. The projector projects an image through the polarizer and the retarder plate onto the transparent screen. The image is visible from a first side of the transparent screen but invisible from a second side of the transparent screen because any light passing twice through the retarder plate is blocked by the polarizer.Type: GrantFiled: March 3, 2006Date of Patent: December 21, 2010Inventor: Cang V. Quach
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Patent number: 7852556Abstract: Off-axis total internal reflection Fresnel lenses and projection screens are disclosed that, when combined, enable construction of projection assemblies for rear-projection-type screen devices (e.g., projection television systems) that are thinner, provide easier handling and maintenance, and have improved contrast, focusing, and resolution when compared with conventional projection screen devices. The off-axis Fresnel lens comprises a plurality of concentric, outwardly-extending, total internal reflection-type prism facets, the top side of which may be aspherical. Embodiments of the invention also include projection screens having at least one diffuser and one lenticular lens. In addition, one or more opaque layers may be used to improve contrast. The various components, e.g., the fresnel lens, the diffuser, the lenticular lens(es), the opaque layer(s), etc. are all combined, or connected, in such a way as to eliminate substantially all air gaps within the connections.Type: GrantFiled: June 6, 2007Date of Patent: December 14, 2010Assignee: Luminoz, Inc.Inventors: Yu Huang, Adnan Malik
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Patent number: 7826135Abstract: A front-projection screen that includes a prismatic film that comprises an outside surface of the screen. The film includes parallel prismatic grooved lines. Each of the lines have a draft surface, a groove surface, and, each of the lines are located on a first side of a base portion of the film. The screen also includes a diffuser-reflector layer adjacent to a second opposite side of the base portion. The outside surface of the screen is oriented to receive an incoming light exclusively through the draft surfaces of the lines. The incoming light has an angle of incidence of about 60 degrees or greater with respect to the normal of the outside surface. A draft-base angle between the base portion and the draft surface is about 75 degrees or greater.Type: GrantFiled: October 20, 2008Date of Patent: November 2, 2010Assignee: Texas Instruments IncorporatedInventors: Patrick R. Destain, James F. Hallas
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Patent number: 7817338Abstract: A projector screen that is used together with a projector for protecting a moving image being a result of scanning output of a video signal, and displays the moving image by a projection light reaching thereto after being emitted when the projector projects the moving image, the projector screen includes: a screen member that configures a partition screen area being a part of a screen area of displaying the moving image partitioned to a plurality of rows, and is capable of mode change between a first mode of delivering the projection light having reached the partition screen area to a side of a viewer, and a second mode of not delivering the projection light having reached the partition screen area to the viewer; and mode changing means for moving, for the screen member of each of the rows of the screen area, by exercising control over each of the screen members in terms of mode change between the first and second modes, any of the partition screen areas put in the second mode in the screen area.Type: GrantFiled: August 1, 2007Date of Patent: October 19, 2010Assignee: Seiko Epson CorporationInventor: Takahiro Sagawa
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Publication number: 20100259818Abstract: A reflective screen which reflects a projection light, includes: a substrate on one surface of which are formed a plurality of concavely or convexly curved surface portions; and a reflective film formed on the curved surface portions of the substrate, wherein the plurality of curved surface portions are configured of a plurality of kinds of curved surface portion differing in curvature, and curved surface portions, among a plurality of curved surface portions aligned in at least a first direction, which are of the same curvature are disposed in series of up to three.Type: ApplicationFiled: April 9, 2010Publication date: October 14, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Toshiaki MIKOSHIBA
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Patent number: 7777949Abstract: A rear projection display device is provided. In an embodiment, the display device includes a laminate screen including a microstructure lamina having a non-planar input surface, a substantially planar output surface and a first index of refraction. The laminate screen further may include a diffusion screen lamina having a substantially planar input surface, an output surface and a second index of refraction. The diffusion screen lamina may be in optical communication with the microstructure lamina. Moreover, the planar output surface of the microstructure lamina and the planar input surface of the diffusion screen lamina may be in facing relationship.Type: GrantFiled: August 7, 2006Date of Patent: August 17, 2010Assignee: Seiko Epson CorporationInventors: Mark David Peterson, Jeffrey Alan Gohman
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Patent number: 7777944Abstract: This invention discloses a projection screen including a diffusion layer, a cap layer, an interference layer and an absorption layer. The projection screen of this invention is based on the concept of inverse reflection. The interference filter includes a plurality of high and low refractive index layers, both of which alternately stacked. The projection screen conveys a small spectral shift and a narrow bandwidth at different incident angles so that the better contract ratio of the image signal can be displayed.Type: GrantFiled: March 5, 2007Date of Patent: August 17, 2010Assignee: Delta Electronics, Inc.Inventors: Fang-Chuan Ho, June-Jei Huang, Kun-Hung Tu