Plural Patents (Class 353/99)
-
Patent number: 8534841Abstract: An optical projection device comprises an imaging device adapted to generate a first and a second image in a first and a second light beam, respectively, a first converting device that is adapted to convert a polarization state of one of the first and the second light beams into a converted polarization state, so that the first and the second light beams are in different polarization states, and a relay lens that is adapted to generate an intermediate image, by superimposing the first and the second images. The relay lens comprises a combining device, that is adapted to combine the first and the second light beams. The optical projection device further comprises a projection lens that is adapted to project the intermediate image onto a screen.Type: GrantFiled: May 9, 2011Date of Patent: September 17, 2013Assignee: SONY CorporationInventor: Markus Kamm
-
Publication number: 20130235356Abstract: A disclosed projection optical system projects images on a surface to be projected on. The projection optical system includes a first optical system including at least one refraction optical system and having positive power as a whole, a folding mirror, and a second optical system including at least one reflection surface having power and having positive power as a whole. Further the folding mirror folds a light path from the first optical system to the second optical system, and in a plane including an optical axis of the first optical system and a normal line of the surface to be projected on, the following conditional expressions (1) through (3) are satisfied (1) 0.43?d1, (2) 0.43?d2, and (3) 0.7?d2/d1?2.0.Type: ApplicationFiled: May 9, 2011Publication date: September 12, 2013Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Issei Abe
-
Publication number: 20130235350Abstract: For illuminating an object and generating a light image, e.g. for presentation of the object, an illumination assembly comprises a reflective part for illumination and a diffractive part for generating the light image. A light source such as a LED Light source is used for generating the light.Type: ApplicationFiled: April 30, 2013Publication date: September 12, 2013Applicant: Koninklijke Philips Electronics N.V.Inventor: Lingli WANG
-
Patent number: 8529068Abstract: A beam light source of an image display device which displays an image on a screen by scanning an optical beam in a two-dimensional direction in which the beam light source includes a light source that emits a diffuse light modulated according to an image signal, and an optical element that shapes the light emitted from the light source to the optical beam. The optical beam has an elliptically shaped beam spot on the screen in which a major axis of the beam spot is substantially perpendicular to a scanning direction. A horizontal spot size of the optical beam on an exit surface of the optical element is at least or equal to a horizontal spot size of the optical beam on the screen, and the horizontal spot size of the optical beam on the screen is no greater than a horizontal pixel pitch displayed on the screen.Type: GrantFiled: November 9, 2012Date of Patent: September 10, 2013Assignee: Hitachi Consumer Electronics Co., Ltd.Inventors: Tomoki Kobori, Yoshiho Seo, Tadayoshi Kosaka, Mayumi Nagayoshi, Satoshi Ouchi
-
Patent number: 8529073Abstract: A display module includes a plurality of light sources that emit light toward a display panel having a screen with a first aspect ratio. An image with a second aspect ratio different from the first aspect ratio is displayed in the first region and not in the second region, and one or more light sources corresponding to the second region are selectively turned off so that luminance of the first region is different from luminance of a second region.Type: GrantFiled: February 25, 2011Date of Patent: September 10, 2013Assignee: LG Electronics Inc.Inventors: Bupsung Jung, Heewon Kwon, Hoon Hur
-
Patent number: 8529070Abstract: A projection optical apparatus capable of providing high image quality and having a reduced size is disclosed. The projection optical apparatus includes a light valve and a projection optical system including a first optical system having a transmissive-refractive element and a second optical system having a reflective-refractive element. An image formed on the light valve is projected by the projection optical system on a projection surface. The optical axis in the first optical system is folded both vertically and horizontally. The first group of the first optical system is contained in a space (dead space) whose lower limit is defined by a lower edge of the second optical system, thereby reducing the depth of the apparatus.Type: GrantFiled: September 2, 2008Date of Patent: September 10, 2013Assignee: Ricoh Company, Ltd.Inventors: Atsushi Takaura, Kazuhiro Fujita, Issei Abe, Akihiro Yamakage, Osamu Nagase, Yoshitsugu Kohno
-
Patent number: 8529067Abstract: An image synthesizing device for a projector apparatus includes first, second, third polarizing beam splitters respectively provided for red light, green light, and blue light; and a light combining unit configured to combine and output the red light, the green light, and the blue light passing through the first, second, and third polarizing beam splitters. The first, second, and third polarizing beam splitters respectively include first, second, and third polarizing films. The first and second polarizing films where the red light and the green light enter are each formed of an organic material, and the third polarizing film where the blue light enters is formed of an inorganic material.Type: GrantFiled: July 8, 2009Date of Patent: September 10, 2013Assignee: Sony CorporationInventor: Fuki Nakai
-
Patent number: 8523362Abstract: An illumination system includes a chip package, a first dichroic film, a second dichroic film, and a third dichroic film. The first dichroic film, the second dichroic film, and the third dichroic film are not parallel to each other and do not cross each other. The chip package includes a first light-emitting chip capable of emitting a first light beam, a second light-emitting chip capable of emitting a second light beam, and a third light-emitting chip capable of emitting a third light beam. The first light-emitting chip, the second light-emitting chip, and the third light-emitting chip are arranged in a row. The first dichroic film reflects the first light beam and transmitting the second light beam, the second dichroic film reflects the second light beam, the first dichroic film and the second dichroic film transmit the third light beam, and the third dichroic film reflects the third light beam.Type: GrantFiled: August 20, 2010Date of Patent: September 3, 2013Assignee: Young Optics Inc.Inventors: Chien-Jung Huang, Pei-Ching Liu, Ruei-Bin Jhang, S-Wei Chen
-
Patent number: 8523363Abstract: A projector includes: a light source that emits light having an asymmetric illuminance distribution; a light modulation device that modulates the light emitted from the light source; and an optical member disposed in an optical path between the light source and the light modulation device, the optical member changing the illuminance distribution of the light from the light source, wherein the optical member changes the illuminance distribution of the light passing therethrough in such a way that a highest illuminance area in the illuminance distribution of the light after passing through the optical member is shifted toward the center of the optical member as compared with the position of the highest illuminance area in the illuminance distribution of the light before incident on the optical member.Type: GrantFiled: October 4, 2010Date of Patent: September 3, 2013Assignee: Seiko Epson CorporationInventor: Susumu Aruga
-
Patent number: 8511831Abstract: An optical device includes a main body having a light incident surface, a light emitting surface provided facing the light incident surface, and a light-reflecting side surface provided from a periphery of the light incident surface to a periphery of the light emitting surface. In the optical device, the light incident surface, the light emitting surface and the light-reflecting side surface are mirror-finished, and a supporting portion configured to support the main body is provided on the light-reflecting side surface.Type: GrantFiled: April 10, 2007Date of Patent: August 20, 2013Assignee: SANYO Electric Co., Ltd.Inventors: Takashi Ikeda, Yoshihiro Yokote, Shinya Matsumoto, Keietsu Sato, Kazutaka Tomite
-
Patent number: 8511836Abstract: When a rotation member is rotated clockwise by a stepping motor, one main operation member is rotated counterclockwise through a link member and the other main operation member is rotated clockwise by said main operation member through the link member. Also, one sub operation member is rotated counterclockwise by said main operation member through the link member, and the other sub operation member is rotated clockwise by the other main operation member through the link member. This causes the amount of overlap between a main split blade mounted to said main operation member and a sub split blade mounted to said sub operation member to be increased and also causes the amount of overlap between a main split blade mounted to the other main operation member and a sub split blade mounted to the other sub operation member to be also increased. As a result, the aperture opening formed between the two main split blades is increased.Type: GrantFiled: September 29, 2009Date of Patent: August 20, 2013Assignee: Nidec Copal CorporationInventors: Yuichirou Usuda, Shigemi Takahashi
-
Patent number: 8511838Abstract: A scanning projector includes a MEMS device with a scanning mirror that sweeps a light beam in two dimensions. A laser limit comparison circuit determines a metric from measured peak scan angles and measured light output. The metric is compared to a threshold and a light source is shut down when the metric exceeds the threshold.Type: GrantFiled: June 29, 2011Date of Patent: August 20, 2013Assignee: Microvision, Inc.Inventor: Bruce C. Rothaar
-
Patent number: 8500286Abstract: A projection system is disclosed, the projection system including: an illumination unit; a PBS (Polarizing Beam Splitter) reflecting the light from the illumination unit, transmitting an image light, having a width larger than that of entrance pupil through which the image light is incident, and having a structure in which a width of an area facing projection lenses is larger than that of an area perpendicular to an area facing the projection lenses; a display device receiving the light reflected from the PBS and outputting the light as an image light; and a projection unit mounted with the projection lenses for projecting the image light outputted from the display device to a screen.Type: GrantFiled: March 9, 2011Date of Patent: August 6, 2013Assignee: LG Innotek Co., Ltd.Inventors: Eunsung Seo, Seungman Jeong, Hyunho Choi, Sanghun Lee
-
Patent number: 8500290Abstract: A projection system having a first tilting mirror matrix, a second tilting mirror matrix, and an imaging lens, which projects the first tilting mirror matrix onto the second tilting mirror matrix, wherein each tilting mirror matrix has multiple tilting mirrors, the tilting axes of which are positioned in a modulator surface plane. The imaging lens includes a first lens and an imaging mirror, and the imaging mirror forms an aperture stop of the imaging lens, wherein the aperture diaphragm includes an uneven angle of 90° together with the normal of the modulator surface of the first tilting mirror matrix without taking into account any optical path folds.Type: GrantFiled: June 23, 2009Date of Patent: August 6, 2013Assignee: Carl Zeiss AGInventors: Enrico Geissler, Christoph Nieten, Guenter Rudolph, Marco Pretorius
-
Patent number: 8491134Abstract: A light emitting apparatus includes a first rod integrator and a second rod integrator supported by a support substrate and a light emitting device disposed between the first rod integrator and the second rod integrator. The light emitting device emits a plurality of light beams to be incident on the first rod integrator and a plurality of light beams to be incident on the second rod integrator. Each of the rod integrators has a light incident surface on which the plurality of light beams are incident, a bent portion that changes the propagating direction of the plurality of incident light beams, and a light exiting surface through which the plurality of light beams mixed with each other exit.Type: GrantFiled: April 12, 2011Date of Patent: July 23, 2013Assignee: Seiko Epson CorporationInventor: Hiroyasu Kaseya
-
Patent number: 8491133Abstract: A plurality of light source sections each have a reflector and a light source that is a discharge lamp. The plurality of light source sections are in a positional relationship wherein all reflector center axes are orthogonal to each other and at least one reflector center axis is orthogonal to the optical axis of a projection optical system. Interchange means interchanges the locations of the plurality of light source sections when a light source section needs to be replaced. Reflection means guides, to a converging optical system, light from that light source section whose reflector center axis is perpendicular to the direction of gravity.Type: GrantFiled: May 20, 2011Date of Patent: July 23, 2013Assignee: Panasonic CorporationInventor: Shigekazu Yamagishi
-
Patent number: 8485665Abstract: A method and system are described for projecting stereoscopic images using circularly polarized light with at least one polarizer for limiting the amount of light or radiant energy reaching a projection lens system and associated optical elements, and system configurations are discussed with respect to desired performance characteristics.Type: GrantFiled: September 10, 2010Date of Patent: July 16, 2013Assignee: Thomson LicensingInventors: William Gibbens Redmann, Mark J. Huber
-
Patent number: 8480239Abstract: An optical device includes multiple reflective spatial light modulation devices each of which applies an image signal to each of rays of incident light and rotates a polarization direction of each of the rays of incident light for a modulated output, multiple polarization elements each of which causes each polarization component of the rays of incident light in a specific direction to be transmitted and incident upon each of the spatial light modulation devices and reflects the polarization component in a direction rotated by each of the spatial light modulation devices, a light synthesis device which synthesizes multiple rays of reflected light to be output as one ray of image light, and a securing member which simultaneously secures each of the polarization elements in a position corresponding to each of the spatial light modulation devices. The securing member is secured to the light synthesis device.Type: GrantFiled: April 11, 2011Date of Patent: July 9, 2013Assignee: Sony CorporationInventor: Yuji Sato
-
Publication number: 20130162961Abstract: In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis.Type: ApplicationFiled: February 22, 2013Publication date: June 27, 2013Applicant: Hitachi, Ltd.Inventors: Koji HIRATA, Masahiko YATSU, Takanori HISADA
-
Patent number: 8469525Abstract: A projection-type display apparatus that projects an image on a screen and performs image display includes at least one laser source that emits a coherent light beam, an illuminating optics that propagates the light beam emitted from the laser source into a predetermined optical path to guide the light beam to the screen, a reflective optical modulator that forms the image to be displayed on the screen on an illuminated surface illuminated by the light beam guided by the illuminating optics, and a projection optics that magnifies and projects the image formed on the illuminated surface of the reflective optical modulator on the screen. The illuminating optics includes a diffusion device, which diffuses the propagated light beam, and is arranged on a light propagation path near a conjugated position with the reflective optical modulator.Type: GrantFiled: December 22, 2009Date of Patent: June 25, 2013Assignee: Mitsubishi Electric CorporationInventors: Kuniko Kojima, Hayato Takeuchi, Tomohiro Sasagawa
-
Patent number: 8469523Abstract: An illumination apparatus includes: first and second lamps; and a combining mirror configured to combine emitted lights from the first and second lamps The combining mirror includes first and second reflection surfaces opposing the first and second lamps respectively, being abutted vertically with respect to each other, whereby forming an edge. Since optical axes of the first and second lamp are respectively inclined with respect to a reference axis being orthogonal to a system optical axis of the illumination apparatus, central axes of the lights from the first and second lamps are incident on a downstream optical system in a state of being slightly inclined with respect to the system optical axis after being reflected on the first and second reflection surfaces respectively.Type: GrantFiled: January 8, 2010Date of Patent: June 25, 2013Assignee: Seiko Epson CorporationInventors: Kenshi Sakai, Kazuhiro Nishida, Katsumi Tanaka
-
Patent number: 8459798Abstract: An illumination apparatus includes a light source, a polarization splitter disposed facing the light source at about 45 degrees with respect to its light emission direction, a first reflector reflecting and condensing one of the polarization light components polarized and split by the polarization splitter, a quarter wave plate disposed between the polarization splitter and the first reflector, a second reflector reflecting and condensing the other of the polarization light components polarized and split by the polarization splitter, a third reflector disposed around the light source and reflecting the other polarization light reflected by the second reflector and the polarization splitter and proceeding in the light source direction, and a quarter wave plate disposed between the polarization splitter and the third reflector and around the light source, the light reflected at the first reflector and reflected at the polarization splitter being used to illuminate a predetermined surface.Type: GrantFiled: December 19, 2008Date of Patent: June 11, 2013Assignee: Nikon CorporationInventor: Nobuhiro Fujinawa
-
Publication number: 20130141700Abstract: A projector includes: a light emitting device; a light modulation device adapted to modulate a light beam emitted from the light emitting device; and a projection device adapted to project the image formed by the light modulation device, wherein the light emitting device includes a light emitting element formed of a super luminescent diode, and adapted to emit light, and a base supporting the light emitting element with first and second reflecting surfaces to reflect the light emitted from the light emitting element. The light emitting element emits the light from first and second end surfaces. Directions of first and second outgoing light respectively emitted from the first and second end surfaces are opposite to each other. Directions of the first and second reflected light respectively reflected by the first and second reflecting surfaces are the same as each other.Type: ApplicationFiled: January 30, 2013Publication date: June 6, 2013Applicant: SEIKO EPSON CORPORATIONInventor: SEIKO EPSON CORPORATION
-
Patent number: 8454169Abstract: An illumination device includes: a light source which emits a plurality of emission lights; a first condenser lens which stacks the plural emission lights emitted from the light source; a first fly-eye lens which divides lights stacked by the first condenser lens into a plurality of partial lights; a second fly-eye lens which converges the plural partial lights; and a second condenser lens which stacks the plural partial lights converged by the second fly-eye lens, wherein the first condenser lens stacks the plural emission lights emitted from the light source on the first fly-eye lens, and the second fly-eye lens stacks the plural partial lights on an illumination receiving area.Type: GrantFiled: October 4, 2010Date of Patent: June 4, 2013Assignee: Seiko Epson CorporationInventor: Hiroyasu Kaseya
-
Patent number: 8454168Abstract: A stereo display apparatus includes a support member, at least one projector, a screen, first reflectors, and an actuator. The projector is connected to the support member, and includes a battery and an image memory module. The projector is capable of emitting an image beam. The screen is connected to the support member. The first reflectors surround the support member. The actuator is connected to the support member and is capable of driving the support member to rotate. The support member is capable of driving the projector and the screen to rotate. When the projector and the screen rotate, the image beam is projected onto the first reflectors in sequence, and the first reflectors reflect the image beam onto the screen in sequence.Type: GrantFiled: September 27, 2010Date of Patent: June 4, 2013Assignee: Coretronic CorporationInventors: Ming-Hui Cheng, Kun-Rong Chang, Fang-Hsuan Cheng
-
Patent number: 8449121Abstract: An image processing system includes a determination unit that determines a distortion state of a projected image, and a correction unit. The correction unit determines a shape of the image after distortion correction according to the distortion state, moves the determined shape in a display area of an optical modulator in a first direction, performs distortion correction of the image, and moves the image after distortion correction in the display area of the optical modulator in a second direction which is opposite to the first direction.Type: GrantFiled: November 17, 2011Date of Patent: May 28, 2013Assignee: Seiko Epson CorporationInventor: Satoshi Aso
-
Patent number: 8449122Abstract: In accordance with embodiments of the present disclosure, a method for marking an image projected onto a surface includes capturing a second image from the surface, detecting the existence of a marking point in the second image, and modifying the first image by placing a graphic element at a location corresponding to a location of the marking point in the second image.Type: GrantFiled: July 20, 2009Date of Patent: May 28, 2013Assignee: IGRS Engineering Lab Ltd.Inventor: Jia Luo
-
Patent number: 8444276Abstract: A light source device includes: a light source section which comprises plural laser diodes; a pulse driving section which divides the laser diodes of the light source section into plural groups, each group having the same number of the laser diodes, and drives the laser diodes of the each group by a pulse having a predetermined period and a predetermined duty ratio; and a light source driving section which controls a phase of the pulse for the each group so that the same number of the laser diodes are emitted in succession when the laser diodes of the each group are driven by the pulse driving section.Type: GrantFiled: September 30, 2010Date of Patent: May 21, 2013Assignee: Casio Computer Co., Ltd.Inventor: Mamoru Shibasaki
-
Patent number: 8439508Abstract: A projector that projects an image on a screen, includes: plural image generating units that generate an image lights representing the image; a main body housing that houses the plural image generating units; and plural projection optical units that are provided in the main body housing to respectively correspond to the plural image generating units and project the image lights generated by the image generating units on the screen.Type: GrantFiled: November 20, 2009Date of Patent: May 14, 2013Assignee: Seiko Epson CorporationInventors: Shuji Matsuo, Takeshi Ishikawa, Hirofumi Kasuga, Hiroshi Midorikawa, Masahiko Nunokawa
-
Patent number: 8439506Abstract: A reflector mounting structure includes a reflector and a fixing member. The reflector includes: a reflecting surface; a reflector body having the reflecting surface formed thereon; a pair of first connecting units provided respectively at an end face of the reflector body and having a substantially spherical first protrusion at an end thereof; and a second connecting unit provided at an end face of the reflector body. The fixing member which supports the reflector includes a pair of first supporting units respectively having a planar contact portion and bringing the contact portion into contact with an end of the first protrusion, and a second supporting unit. A contact-portion vertical distance is set such that the first protrusion moves while rolling with respect to a contact portion when the reflector deforms.Type: GrantFiled: June 24, 2010Date of Patent: May 14, 2013Assignee: Mitsubishi Electric CorporationInventors: Satoru Okagaki, Norihiro Watanabe, Atsushi Michimori
-
Publication number: 20130114053Abstract: An image display device includes an image display element, a light source, an illumination system, a projector system comprising a refractive optical system including a plurality of lens groups, and a mirror train including a curved mirror, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of the image display element, and a second focus structure configured to move the respective lens groups along the normal line of the image display element by different amounts from those of the first focus structure.Type: ApplicationFiled: November 5, 2012Publication date: May 9, 2013Inventors: Hibiki TATSUNO, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
-
Patent number: 8434872Abstract: A multi-viewpoint floating image display device enabling observation from multiple viewpoints by combining mirror images of objects to be projected and spatially separated from one another as real images in a small region in space. The display device comprises a multi-viewpoint floating image display optical system having real mirror imaging optical systems each of which forms a real image of each of the objects in a plane-symmetric position symmetric to the object with respect to one geometrical plane which is the symmetry plane. All the real mirror imaging optical systems are so arranged that the angle formed by given symmetry planes is less than 180 degrees on the real image side with respect to the symmetry planes. The objects are so arranged as to correspond to the respective real mirror imaging optical systems.Type: GrantFiled: July 29, 2008Date of Patent: May 7, 2013Assignee: National Institute of Information and Communications TechnologyInventor: Satoshi Maekawa
-
Publication number: 20130107234Abstract: Disclosed is an image displaying apparatus including an image displaying element configured to form an image to be projected and a projection optical system having a positive refractive power and configured to project the image to be projected onto a screen, wherein the projection optical system includes a lens optical system and a mirror optical system, the lens optical system including plural lens groups, the mirror optical system including a first mirror and a second mirror, the second mirror being a concave mirror, wherein an intermediate image of a pixel of the image displaying element is formed between the image displaying element and the second mirror, and wherein the first mirror is held to be capable of adjusting a position thereof.Type: ApplicationFiled: October 31, 2012Publication date: May 2, 2013Inventors: Kiichiro NISHINA, Makoto Hirakawa, Hibiki Tatsuno, Yasuyuki Shibayama, Takanobu Osaka
-
Publication number: 20130107232Abstract: A projection optical system that is used for an image display device having an image display element, includes a refractive optical system that includes a plurality of lenses; an aperture that limits a quantity of light led to the refractive optical system from the image display element; a lens group that is arranged between the image display element and the aperture, has a positive refractive power, and has low field curvature with respect to the image display element; and a mirror optical system that has a concave mirror arranged on an opposite side from the image display element across the refractive optical system, the aperture, and the lens group.Type: ApplicationFiled: October 24, 2012Publication date: May 2, 2013Inventor: Hibiki Tatsuno
-
Publication number: 20130107233Abstract: An image displaying apparatus including a light source, an image displaying element configured to control exiting of incident light to display an image, an illumination optical system configured to illuminate the image displaying element with light exiting from the light source, and a projection optical system configured to project an image displayed on a display surface of the image displaying element, to provide an enlarged display. The projection optical system includes a lens optical system, a first mirror configured to reflect light transmitted through the lens optical system, and a second mirror configured to reflect light reflected from the first mirror toward the surface to be projected onto, and one of the mirrors is arranged at a position conjugate to the image displaying element, and wherein an optical surface of the one mirror is arranged to face vertically downward.Type: ApplicationFiled: October 31, 2012Publication date: May 2, 2013Inventors: Makoto Hirakawa, Hibiki Tatsuno, Takanobu Osaka, Yasuyuki Shibayama, Kiichiro Nishina
-
Patent number: 8430514Abstract: In order to produce stress-reduced reflective optical elements (1) for an operating wave length in the soft X-ray and extreme ultraviolet wavelength range, in particular for use in EUV lithography, it is proposed to apply, between substrate (2) and a multilayer system (4) optimized for high reflectivity at the operating wavelength, a stress-reducing multilayer system (6) with the aid of particle-forming particles having an energy of 40 eV or more, preferably 90 eV or more. Resulting reflective optical elements are distinguished by low surface roughness, a low number of periods in the stress-reducing multilayer system and also high values of the stress-reducing multilayer system.Type: GrantFiled: August 20, 2012Date of Patent: April 30, 2013Assignee: Carl Zeiss SMT GmbHInventor: Gisela Von Blanckenhagen
-
Patent number: 8430513Abstract: A projection system comprises an image input element and an optical imaging element. The image input element is configured to input an original image or a processed image. The optical imaging element, an optical system with axisymmetrical structure and specific spherical aberration, is configured to generate an image with extended depth of field on an image projection surface in accordance with the original image or the processed image.Type: GrantFiled: July 7, 2010Date of Patent: April 30, 2013Assignee: Industrial Technology Research InstituteInventors: Chuan Chung Chang, Hsin Yueh Sung, Chir Weei Chang
-
Patent number: 8425056Abstract: An image display apparatus includes: a light source unit which emits axially symmetric polarized light having polarization distribution symmetric with respect to the center axis of light; and a scanning unit which applies the axially symmetric polarized light to a projection surface for scanning to form an image.Type: GrantFiled: March 11, 2010Date of Patent: April 23, 2013Assignee: Seiko Epson CorporationInventor: Fumika Sumiyama
-
Publication number: 20130094003Abstract: A MEMS micro-minor device includes, a single package; a first mirror and second minor, wherein at least one of the minors is configured to oscillate along an oscillation axis; wherein both mirrors are located within the single package and are arranged such that as the at least one mirror oscillates, the light incident on the first micro-minor can be deflected to the second minor.Type: ApplicationFiled: December 5, 2012Publication date: April 18, 2013Applicant: Lemoptix SAInventor: Lemoptix SA
-
Patent number: 8419195Abstract: This projector includes a laser beam emitting portion emitting a laser beam and a projecting portion projecting an image on an arbitrary projection region by scanning the projection region with the laser beam. This projector further includes a control portion controlling the laser beam emitting portion not to emit the laser beam by stopping supplying current to the laser beam emitting portion in a previously set partial scanning section within a scanning section for the laser beam.Type: GrantFiled: June 30, 2010Date of Patent: April 16, 2013Assignee: Funai Electric Co., Ltd.Inventors: Hiroshi Nishigaki, Atsuya Hirano, Atsuhiko Chikaoka, Ken Nishioka
-
Patent number: 8414134Abstract: An illumination apparatus includes first and second light source units. An optical axis converting element has a first surface that reflects a luminous flux emitted from the first light source unit and a second surface that reflects a luminous flux emitted from the second light source unit and is configured to reflect respective luminous fluxes emitted from the respective light source units in substantially one direction. Each of the luminous fluxes entering the optical axis converting element has different dimensions in two directions orthogonal to each other in a plane orthogonal to an emission axis of the each light source unit. The optical axis converting element is arranged such that a cross-sectional shape of the luminous flux entering each optical axis converting element taken along the surface has a short side direction in the same direction as the direction of arrangement of the first and second surfaces.Type: GrantFiled: December 22, 2009Date of Patent: April 9, 2013Assignee: Seiko Epson CorporationInventor: Yoshitaka Itoh
-
Publication number: 20130083301Abstract: A reflection apparatus for a beam projector, and a beam projector including the reflection apparatus are provided. The reflection apparatus reflects and projects incident light from a projection optical system of the beam projector to an external surface, and includes a first mirror for reflecting the incident light from the projection optical system, and a second mirror that receives the light reflected from the first mirror and reflects the received light to the external surface.Type: ApplicationFiled: September 27, 2012Publication date: April 4, 2013Applicant: Samsung Electronics Co., Ltd.Inventor: Samsung Electronics Co., Ltd.
-
Patent number: 8403503Abstract: A freeform optical device is disclosed which has an at least partially curved surface with a surface geometry. Surface normals at multiple locations on the surface geometry can be computed to define the surface geometry with respect to multiple focal points corresponding to the surface normals at the locations in order to correct optical aberrations otherwise occurring at the focal points.Type: GrantFiled: February 10, 2010Date of Patent: March 26, 2013Inventor: Zheng Jason Geng
-
Patent number: 8403504Abstract: In a projection type display apparatus for enabling to display an image, by projecting an image on an image display element(s), enlargedly, upon a nearly horizontal surface, such as, a table, a reflection mirror for reflecting a light from a light source is so disposed that an optical axis of the light source is nearly perpendicular to an optical axis of a lens group having a plural number of lens elements, which are disposed symmetric with respect to the optical axis.Type: GrantFiled: October 8, 2010Date of Patent: March 26, 2013Assignee: Hitachi, Ltd.Inventors: Koji Hirata, Masahiko Yatsu, Takanori Hisada
-
Patent number: 8403502Abstract: A front-projection display system having a screen with improved brightness and/or resolution of an image displayed on outer portions thereof. The screen has a display surface that is generally a convex shape having a curvature of the display surface in the vertical direction of an image projected thereon that is less than a curvature of the display surface in the horizontal direction.Type: GrantFiled: November 18, 2008Date of Patent: March 26, 2013Assignee: Barco N.V.Inventor: Moshe Oren
-
Patent number: 8403492Abstract: A light source device includes: a first light source configured to emit a first source light in a first wavelength range; a source light generator configured to generate, from the first light, a color-varying source light having time varying color; a second light source configured to emit a second source light in a second wavelength range that is different from the first wavelength range; and a light source controller configured to control driving timing for turning on and off each of the first light source and the second light source so as to cyclically select one of the color-varying source light and the second source light to be output as an output source light.Type: GrantFiled: June 28, 2010Date of Patent: March 26, 2013Assignee: Casio Computer Co., Ltd.Inventor: Mamoru Shibasaki
-
Publication number: 20130070217Abstract: A projection optical system for use in an image display apparatus having an illumination optical system applying light from a light source, and an image display device receiving the light from the illumination optical system to form a projection image includes a projector lens composed of plural lenses, a first mirror, and a second mirror formed of a concave mirror. The projection optical system is configured to project the projection image onto a projection surface. A projection luminous flux passing through the projector lens to be incident on the first mirror is a luminous flux exhibiting divergence. The projection luminous flux reflected off the second mirror after having reflected off the first mirror is converged once, and the once converged projection luminous flux is projected onto the projection surface. A lens surface of a lens located closest to the first mirror among the lenses of the projector lens is convex.Type: ApplicationFiled: September 12, 2012Publication date: March 21, 2013Inventor: Hibiki TATSUNO
-
Patent number: 8398244Abstract: A projector includes: a light source that emits light; a first lens array that divides the light emitted from the light source into a plurality of partial light beams; a second lens array that focuses the plurality of partial light beams emitted from the first lens array; condenser lenses that superimpose the plurality of partial light beams emitted from the second lens array on target illumination regions; and liquid crystal panels that modulate the light beams passing through the condenser lenses according to image information, wherein each of the condenser lenses is a single lens that achieves telecentric illumination when superimposing the partial light beams, and only the condenser lenses are arranged as lenses between the second lens array and the liquid crystal panels.Type: GrantFiled: December 18, 2009Date of Patent: March 19, 2013Assignee: Seiko Epson CorporationInventors: Toshihiro Shimizu, Katsumi Tanaka
-
Patent number: 8398249Abstract: A projector for projecting an image includes: a light source for generating a light bundle; a pivotable deflection unit for deflecting the light bundle generated by the light source onto a projection surface; and an imaging device for imaging an aperture of the deflection unit onto the projection surface. The imaging device includes a mirror objective having at least two mirror elements. A method for projecting an image is also provided.Type: GrantFiled: February 25, 2008Date of Patent: March 19, 2013Assignee: Osram Gesellschaft mit beschraenkter HaftungInventor: Henning Rehn
-
Publication number: 20130063706Abstract: A micro-projection system for projecting light on a projection surface, comprising: —at least one coherent light source (101); —optical elements (102, 108, 109) in the optical path between said coherent light source and said projection surface; —said optical elements including at least one reflective member (102) actuated by a drive signal for deviating light from said light source so as to scan a projected image onto said projecting surface; —said optical elements including at least one vibrating element (102) actuated by a vibrating signal so as to reduce speckle onto said projecting surface. The corresponding method for reducing speckle is also provided.Type: ApplicationFiled: April 28, 2010Publication date: March 14, 2013Applicant: LEMOPTIX SAInventors: Lucio Kilcher, Nicolas Abelé, Faouzi Khechana