Unitary Plural Refracting Surfaces Patents (Class 353/38)
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Publication number: 20140375963Abstract: A system for vibrating optical components using an airflow device is provided. The system includes: one or more elongated fibers, each of the one or more elongated fibers comprising a respective diameter; one or more optical components for at least one of conveying coherent light and interacting with the coherent light; and, an airflow device arranged to flow air over, and about perpendicular to, the one or more elongated fibers at a velocity, a combination of the respective diameter of each of the one or more elongated fibers and the velocity of the air configured to cause the one or more elongated fibers to produce shedding vortices that cause the one or more elongated fibers and the one or more optical components to each vibrate.Type: ApplicationFiled: June 21, 2013Publication date: December 25, 2014Inventor: Michael BISHOP
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Patent number: 8911093Abstract: A light emitting device includes a first layer that generates light by an injection current, the first layer is provided with a first optical waveguide extending from a first light emitting section disposed on a first side surface to a first light reflecting section disposed on a second side surface, a second optical waveguide extending from the first light reflecting section to a second light reflecting section disposed on a third side surface, and a third optical waveguide extending from the second light reflecting section to a second light emitting section disposed on the first side surface, an element of the group II or the group XII is diffused in the first light reflecting section and the second light reflecting section, and a first light emitted from the first light emitting section and a second light emitted from the second light emitting section are emitted in the same direction.Type: GrantFiled: August 29, 2012Date of Patent: December 16, 2014Assignee: Seiko Epson CorporationInventor: Masamitsu Mochizuki
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Patent number: 8905548Abstract: An image projector includes a light source for displaying light and a diffusing screen coupled to an in-plane vibrator. The diffusing screen is positioned to receive the display light from the light source and generate phase-modulated display light. The image projector also includes a collimating element positioned to receive the phase-modulated display light. The image projector further includes a display panel positioned to receive the phase-modulated display light after being collimated by the collimating element. The display panel is configured to generate a projectable image using the phase-modulated display light.Type: GrantFiled: August 23, 2012Date of Patent: December 9, 2014Assignee: OmniVision Technologies, Inc.Inventor: Chun-Sheng Fan
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Patent number: 8905549Abstract: A projection image display apparatus that enlarges and displays an image includes a case, a laser light source, a cooling mechanism that includes a component that produces vibration during an operation, a diffuser that diffuses light emitted from the laser light source, optics that shape the light that is diffused by the diffuser to light having a uniform luminance distribution and a rectangular cross-section, and an optical modulation element that modulates the light shaped by the optics.Type: GrantFiled: October 2, 2013Date of Patent: December 9, 2014Assignee: NEC Display Solutions, Ltd.Inventor: Motoyasu Utsunomiya
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Patent number: 8894215Abstract: An illumination unit includes one or more light sources and an optical member. The optical member includes an integrator having a first fly-eye lens on which light from a solid-state light-emitting device is incident and a second fly-eye lens on which the light from the first fly-eye lens is incident. The integrator uniformalizes an illuminance distribution of light in a predetermined illumination region illuminated by the light incident from the solid-state light-emitting device. Each of the first fly-eye lens and the second fly-eye lens has a plurality of cells. The cells of the first fly-eye lens are arranged in a first direction and a second direction that intersect each other, and positions of the cells in the second direction are different from one another at least partially among a plurality of cell rows arranged along the first direction in the first fly-eye lens.Type: GrantFiled: March 8, 2012Date of Patent: November 25, 2014Assignee: Sony CorporationInventor: Koji Miura
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Patent number: 8894219Abstract: An optical projection system for projecting an enlarged image on a projection surface is provided. The optical projection system includes an image forming element, a coaxial optical system and a concave mirror. The coaxial optical system and the concave mirror are arranged in this order on an optical path from the image forming element to the projection surface. The coaxial optical system includes lens groups and an aperture stop that share an optical axis. The lens groups include a first lens group and other lens groups. The first lens group has negative refractive power and independently moves in an optical axis direction for adjusting the focus of the optical projection system. The aperture stop is arranged at a position closer to the image forming element than the first lens group that is arranged closest to the concave mirror among the lens groups having the negative refractive power.Type: GrantFiled: April 10, 2014Date of Patent: November 25, 2014Assignee: Ricoh Company, Ltd.Inventor: Hibiki Tatsuno
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Publication number: 20140340651Abstract: A projection apparatus has a hologram recording medium configured to be capable of diffusing coherent light beams, an irradiation unit configured to irradiate coherent light beams to the hologram recording medium so that the coherent light beams scan the hologram recording medium, a light modulator that is illuminated by coherent light beams incident on and diffused at respective points of the hologram recording medium from the irradiation unit, a projection optical system configured to project a modulated image generated by the light modulator onto a scattering plane, and an imaging optical system provided between the hologram recording medium and the light modulator, configured to converge the coherent light beams diffused at respective points of the hologram recording medium to illuminate the light modulator.Type: ApplicationFiled: September 18, 2012Publication date: November 20, 2014Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Makio Kurashige, Yukio Taniguchi, Ryohei Oka, Kazutoshi Ishida
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Publication number: 20140333900Abstract: A beam, expansion unit is configured to expand a beam of laser light emitted from a laser light source into an ellipse. A beam irradiation position moving unit is configured to translate a mirror by a driving unit to sequentially move the laser light expanded into the ellipse on the surface of an integrator in a minor-axis direction of the ellipse. A reflective liquid crystal device is configured to modulate the laser light. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.Type: ApplicationFiled: July 22, 2014Publication date: November 13, 2014Inventors: Kazutaka ABOSHI, Motoshi TOHDA, Tatsuru KOBAYASHI
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Publication number: 20140333903Abstract: The present invention provides a projection type display apparatus for displaying an image by which reduction of contrast is suppressed, including: a light source; a first lens array and a second lens array having a plurality of lens cell areas; a collecting lens; a display element; a projection lens; and a light shielding unit which light-shields the light fluxes from the first lens array to the second lens array, wherein the light shielding unit light-shields at least parts of all the lens cell areas except for the lens cell area in contact with an optical axis among a plurality of rectangular lens cell areas of the second lens array, and a light shielding area in the lens cell area in contact with the optical axis is smaller than that in any of the lens cell areas except for the lens cell area in contact with the optical axis.Type: ApplicationFiled: July 22, 2014Publication date: November 13, 2014Inventor: Nobuyuki KIMURA
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Publication number: 20140333902Abstract: An integrator includes a plurality of rectangular lens cells arranged in a direction x and a direction y. Laser light emitted from a laser source is projected onto an integrator. A beam irradiation position moving unit is configured to cause the laser light to scan the surface of the integrator in the directions x and y so that the laser light is sequentially projected onto a plurality of lens cells. A reflective liquid crystal device is configured to modulate the laser light emitted from the integrator. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.Type: ApplicationFiled: July 22, 2014Publication date: November 13, 2014Inventors: Kazutaka ABOSHI, Motoshi TOHDA, Tatsuru KOBAYASHI
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Patent number: 8870380Abstract: A system and a method for time-multiplexed autostereoscopic display are disclosed, wherein the system includes a projector, an optical relaying device and a slit array. The projector can project a plurality of rays of different directions in different time sequences respectively. The optical relaying device is optically coupled with the projector for relaying the rays. The slit array is optically coupled with the optical relaying device for being illuminated by the rays. The slit array further has a plurality of regions which are illuminated by the rays respectively; and each of the regions has a plurality of slits which are turned on sequentially for a part of the rays to pass therethrough. Therefore, the display system can reduce the light loss of the rays each time when a 3D virtual image is formed.Type: GrantFiled: December 18, 2012Date of Patent: October 28, 2014Assignee: Delta Electronics, Inc.Inventor: Junejei Huang
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Patent number: 8870390Abstract: A low Z-height projection system includes a display panel for displaying a grating pattern that has gratings extended in a first direction. A projection lens system is also included and projects the grating pattern displayed on the display panel onto a surface. The projection lens system is a truncated circular lens system that has a first lens width in the first direction and a second lens width in a second direction. The first lens width is less than the second lens width. The first and second directions are orthogonal.Type: GrantFiled: September 11, 2012Date of Patent: October 28, 2014Assignee: OmniVision Technologies, Inc.Inventor: Iain Davidson
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Patent number: 8864317Abstract: A projection display satisfies formulas {(4FR?)/(W?TphR)}?0.015 and W??0.5, where: F is an F-number of a projection lens; W? is a diagonal size (inch number) of a light modulation element; ph is a pixel count in one side direction of the light modulation element; T is a throw ratio of the projection display (=a projection distance s/a distance L in the one side direction of a projected image on a projection plane); R is a radius of an exit pupil of the projection lens; I is an integrated light quantity obtained by, in a light quantity distribution in the exit pupil, radially integrating the light quantity up to the radius R; and I?(=I/2) is an integrated light quantity obtained by, in the light quantity distribution in the exit pupil, radially integrating the light quantity up to a predetermined radius R? about barycenter of the light quantity distribution.Type: GrantFiled: September 14, 2012Date of Patent: October 21, 2014Assignee: Sony CorporationInventor: Toshifumi Yasui
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Patent number: 8857996Abstract: An illumination optical system include a first lens array including multiple lens cells that split a light beam emitted from a light source into multiple light beams, a second lens array including lens cells that the light beams split by the lens cells of the first lens array are incident thereon, and an optical element configured to illuminate an image display element by superposing light beams emerging from the second lens array on the image display element. At least one of the first lens array and the second lens array includes at least two lens cells each having a curved surface that is formed so as to be continuous with a curved surface of an adjacent lens cell, the at least two lens cells being decentered, and at least two lens cells of the first lens array have different radii of curvature.Type: GrantFiled: April 4, 2012Date of Patent: October 14, 2014Assignee: Canon Kabushiki KaishaInventor: Takehito Kawasumi
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Publication number: 20140300869Abstract: In exemplary implementations of this invention, light from a light field projector is transmitted through an angle-expanding screen to create a glasses-free, 3D display. The display can be horizontal-only parallax or full parallax. In the former case, a vertical diffuser may positioned in the optical stack. The angle-expanding screen may comprise two planar arrays of optical elements (e.g., lenslets or lenticules) separated from each other by the sum of their focal distances. Alternatively, a light field projector may project light rays through a focusing lens onto a diffuse, transmissive screen. In this alternative approach, the light field projector may comprise two spatial light modulators (SLMs). A focused image of the first SLM, and a slightly blurred image of the second SLM, are optically combined on the diffuser, creating a combined image that has a higher spatial resolution and a higher dynamic range than either of two SLMs.Type: ApplicationFiled: April 9, 2014Publication date: October 9, 2014Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Matthew Hirsch, Gordon Wetzstein, Ramesh Raskar, Vincent Lee
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Patent number: 8851682Abstract: A display module includes a light emitting element array and a lens array. The light emitting element array includes a plurality of light emitting elements arranged on a substrate and driven by driving signal to emit light. A lens array is configured to focus light emitted by the respective light emitting elements. The lens array includes a plurality of first lens pillars respectively provided on the light emitting elements, a plurality of second lens pillars respectively provided on the first lens pillars and having curved surfaces at tops thereof, and a plurality of lens portions formed so as to cover the first lens pillars and the second lens pillars, the lens portions having curved surfaces at tops thereof. A driving circuit is provided on the substrate.Type: GrantFiled: June 28, 2012Date of Patent: October 7, 2014Assignee: Oki Data CorporationInventors: Kenichi Tanigawa, Minoru Fujita
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Patent number: 8851681Abstract: An illumination device includes: a light source section having plural kinds of light sources, in which the light sources emits light beams having different wavelengths; a parallelizing optical system parallelizing each of the light beams entered from the light sources, and allowing each of the parallelized light beams to exit therefrom; a light path unifying optical system unifying the parallelized light beams exited from the parallelizing optical system into a single light path; an expanding optical system expanding a beam diameter of each of the parallelized light beams unified into the single light path, and allowing each of the expanded and parallelized light beams to exit therefrom; and a uniformizing optical system uniformizing an in-plane intensity distribution in each of the expanded and parallelized light beams exited from the expanding optical system.Type: GrantFiled: October 5, 2011Date of Patent: October 7, 2014Assignee: Sony CorporationInventors: Tatsuya Oiwa, Kazuyuki Takahashi, Koji Miura
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Patent number: 8845111Abstract: The lens shifting device includes: first plate through which video light passes; second plate connected to first plate via elastic member and having projection lens attached to a position into which the video light that passed through first plate enters; slider disposed to project from second plate and housed in first plate to be movable in a predetermined direction; and guide shaft attached to first plate in the state of being engaged with slider and rotated to move the second plate. Elastic member is disposed between first plate and second plate to connect first plate and second plate in the state of generating an elastic contraction force.Type: GrantFiled: March 2, 2010Date of Patent: September 30, 2014Assignee: NEC Display Solutions, Ltd.Inventors: Kunitaka Furuichi, Takayuki Okada
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Publication number: 20140285774Abstract: There is provided a light source device including at least one light source configured to emit light, a diffusion plate configured to diffuse and reflect the light emitted from the light source, and a partial transmission member which is provided between the light source and the diffusion plate and has a transmission region which allows the light to pass through and a reflection region which reflects the light and is except the transmission region.Type: ApplicationFiled: March 12, 2014Publication date: September 25, 2014Applicant: Sony CorporationInventor: Shinichiro Tajiri
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Patent number: 8837009Abstract: A light guiding member includes an input surface, an output surface, a counter surface, a reflective portion, and a diffusing portion. The light guiding member is a rod-shaped member that guides light in a longitudinal direction thereof. The input surface is one end face of the light guiding member and allows light to be input thereon. The output surface has a belt-like shape, extends in the longitudinal direction, and allows light to be emitted therefrom. The counter surface is located opposite the output surface. The reflective portion is a belt-like portion extending in the longitudinal direction and reflects light toward the output surface. The diffusing portion is a belt-like portion extending in the longitudinal direction and diffuses light emitted from the output surface. The diffusing portion is smaller than the reflective portion in width in a direction orthogonal to the longitudinal direction.Type: GrantFiled: January 30, 2013Date of Patent: September 16, 2014Assignee: Kyocera Document Solutions Inc.Inventor: Kenichiro Kawasaki
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Publication number: 20140253989Abstract: A projection apparatus has an optical device capable of diffusing coherent light beams, an irradiation unit to irradiate coherent light beams to the optical device so that the coherent light beams scan the optical device, a light modulator to generate a modulated image using coherent light beams incident on and diffused at respective points of the optical device from the irradiation unit, and a projection optical system to project a modulated image generated by the light modulator onto a scattering plane. The light modulator has a plurality of micromirrors provided for each pixel, to switch a reflection angle of each coherent light beam from the optical device, and a reflection angle controller to control a timing of switching a reflection angle of each of the plurality of micromirrors so that the timing becomes irregular for each frame period that is a time unit for generating the modulated image.Type: ApplicationFiled: October 12, 2012Publication date: September 11, 2014Applicant: DAI NIPPON PRINTING CO., LTDInventor: Makio Kurashige
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Patent number: 8827464Abstract: A projection display device includes: a light source unit including light sources emitting light in a plurality of colors, condenser lenses and a color combining optical element; a total reflection prism that totally reflects a combined light flux from the color combining optical element so as to be guided to an image forming unit; and a projection lens. At least one of; an entry surface of the color combining optical element through which substantially parallel light fluxes from the condenser lenses enter, an exit surface of the color combining optical element through which the combined light flux exists, and an entry surface of the total reflection prism through which the combined light flux enters, is formed as a free curved surface where a shape of a section of the combined light flux is altered so as to be matched with a shape of an outline of the display area.Type: GrantFiled: February 16, 2012Date of Patent: September 9, 2014Assignee: Nikon CorporationInventor: Aiko Namikawa
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Publication number: 20140247430Abstract: In an image display system, a light distribution forming lens is placed between a laser light source and a spatial light modulator or a MEMS mirror device for adjusting a distribution of light intensity of the laser light so that light intensity at an exit pupil of a projection lens is greater in a radially intermediate part thereof than in a central part thereof. The light distribution lens is provided with a conical incident surface and a convex exit surface so as to function also as a collimator lens. Thereby, the image display system can be constructed as a highly compact unit that is highly efficient in the use of available light and free from the problem of speckle noises.Type: ApplicationFiled: February 3, 2014Publication date: September 4, 2014Applicant: PANASONIC CORPORATIONInventors: Masahiro INOUE, Tetsuro MIZUSHIMA
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Patent number: 8820946Abstract: A projection optical system substantially consists of a first optical system composed of a plurality of lens groups and a second optical system composed of one reflection mirror having a convex aspherical surface arranged in this order from the reduction side, in which all optical surfaces constituting the first and second optical systems are formed so as to have rotationally symmetrical shapes around one common axis, the projection optical system is configured such that focus adjustment is performed by individually moving two lens groups in the first optical system along the common axis, and the lens disposed on the most magnification side in the reduction side lens group of the two lens groups is a lens having a convex surface on the magnification side, thereby magnifying and projecting an image formed on a conjugate plane on the reduction side to a conjugate plane on the magnification side.Type: GrantFiled: September 25, 2013Date of Patent: September 2, 2014Assignee: Fujifilm CorporationInventor: Masaru Amano
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Patent number: 8820944Abstract: A portable image projection device has a housing with first and second members pivotable between device folded and unfolded positions. First lens optics mounted within the first member are configured for projecting light modulated by a spatial light modulator along an optical axis through a first aperture with a first throw ratio with the device in the folded position. A second lens optics element movably mounted within the first member is configured for selective movement between positions of non-intersection and intersection with the optical axis. The second lens optics element is configured for cooperating with at least part of the first lens optics for projecting the light modulated by the spatial light modulator along the optical axis through a second aperture with a second throw ratio less than the first throw ratio with the device in the unfolded position.Type: GrantFiled: October 24, 2012Date of Patent: September 2, 2014Assignee: Texas Instruments IncorporatedInventor: Jose S. Vasquez
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Publication number: 20140232995Abstract: An illumination device includes a light source device, a uniformization optical system which uniformizes the illuminance distribution of light from the light source device on a region to be illuminated, and a diffraction optical element which is provided in an optical path between the light source device and the uniformization optical system, and rotates around a predetermined rotation axis. The diffraction optical element includes a first region which forms a first illuminance distribution, and a second region which is provided at a position different from the first region around the rotation axis, and forms a second illuminance distribution different from the first illuminance distribution.Type: ApplicationFiled: February 6, 2014Publication date: August 21, 2014Applicant: SEIKO EPSON CORPORATIONInventor: Junichi OKAMOTO
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Patent number: 8807759Abstract: A projection apparatus includes an optical engine base, a light source, a light valve, a projection lens, and an array lens module. The light source, the light valve, and the projection lens are installed to the optical engine base. The array lens module includes a frame body fixed to the optical engine base, a first array lens, and a second array lens. One of the first array lens and the frame body has a first positioning hole while the other one has a first positioning pillar inserted into the first positioning hole. One of the second array lens and the frame body has a second positioning hole while the other one has a second positioning pillar inserted into the second positioning hole. A light beam emitted by the light source passes through the first array lens, the second array lens, and the light valve sequentially to reach the projection lens.Type: GrantFiled: March 27, 2012Date of Patent: August 19, 2014Assignee: Coretronic CorporationInventor: Shiuan-Ting Lin
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Patent number: 8801192Abstract: A light source module and a projector using the same are provided. The light source module includes a monochromatic light source emitting a monochromatic light, a rotating wheel having a light transmitting area and a wavelength transforming area, a filter wheel rotating at a same rotation speed with the rotating wheel, and a dichroic mirror disposed between the rotating wheel and the filter wheel. The wavelength transforming area is coated with a first wavelength transforming material capable of transforming the first color light into a second color light. The filter wheel has a first color filter area and a second color filter area respectively corresponding to the light transmitting area and the wavelength transforming area. The dichroic mirror reflects the first color light to the rotating wheel and allows the second color light to transmit therethrough.Type: GrantFiled: July 17, 2012Date of Patent: August 12, 2014Assignee: BenQ CorporationInventors: Hsiu-Tsu Wang, Yung-Yu Chiang
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Patent number: 8801189Abstract: There is provided a laser projector, including: a laser source section for emitting laser beams; a spatial light modulator which modulates the laser beams to generate image light; a projector lens from which the image light is emitted; a beam shaper which shapes the laser beams into a shape of the spatial light modulator; and a pupil uniformizer which makes a light intensity distribution uniform at an exit pupil of the projector lens, wherein the pupil uniformizer is situated between the laser source section and the beam shaper.Type: GrantFiled: June 20, 2011Date of Patent: August 12, 2014Assignee: Panasonic CorporationInventors: Tetsuro Mizushima, Tatsuo Itoh, Kenichi Kasazumi, Kenji Nakayama
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Patent number: 8794764Abstract: Projection systems and methods for providing stereoscopic images viewed through passive polarizing eyewear. The systems relate to projectors that create left and right eye images simultaneously and often as side-by-side images on the image modulator. The systems act to superimpose the spatially separated images on a projection screen with alternate polarization states. The embodiments are best suited to liquid crystal polarization based projection systems and use advanced polarization control.Type: GrantFiled: March 25, 2013Date of Patent: August 5, 2014Assignee: RealD Inc.Inventors: Miller H. Schuck, Michael G. Robinson, Douglas J. McKnight, Gary D. Sharp
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Patent number: 8783878Abstract: An optical system (100) comprises a coherent light source (101) and optical elements for directing light from the source to a target (1001). The optical elements include at least one diffusing element (141, 161) arranged to reduce a coherence volume of light from the source and a variable optical property element (151). A control system (1021) controls the variable optical property element such that different speckle patterns are formed over time at the target (1001) with a temporal frequency greater than a temporal resolution of an illumination sensor or an eye (1011) of an observer so that speckle contrast ratio in the observed illumination is reduced. The variable optical property element (151) may be a deformable mirror with a vibrating thin plate or film.Type: GrantFiled: December 18, 2008Date of Patent: July 22, 2014Assignee: Optyka LimitedInventors: Fergal Patrick Shevlin, Omar Sqalli, Nicolas Descharmes
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Publication number: 20140198303Abstract: An optical system for a projector is provided, which includes a solid-state light source module, an optical module, a phosphor element and a light relay module which are disposed sequentially. The light source module can generate a first beam, while the optical module can relay and uniformize the first beam so that the first beam is uniformly incident on the phosphor element. The optical module also makes the light spot of the first beam incident on the phosphor element into a predetermined shape and area, so that the phosphor element will emit a second beam by an emitting area. The light relay module can receive a part of the second beam, and the part of the second beam has a solid angle. An Etendue defined by the solid angle and the emitting area may be identical to the Etendue of a light modulator of the projector.Type: ApplicationFiled: August 6, 2013Publication date: July 17, 2014Applicant: DELTA ELECTRONICS, INC.Inventor: Bor WANG
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Patent number: 8777419Abstract: A projection apparatus and a location method for determining a position of a light point on a projection image of the projection apparatus are provided. The projection apparatus comprises a lens, a light detector, a light guide module and a processing circuit. The light guide module is configured to receive the light point via the lens, and to guide the light point into the light detector. The light detector outputs a detection signal to the processing circuit according to the light point within a detection period. The processing circuit determines the position of the light point on the projection image according to the detection signal.Type: GrantFiled: March 11, 2011Date of Patent: July 15, 2014Assignee: Delta Electronics, Inc.Inventor: June-jei Huang
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Patent number: 8770763Abstract: A projection display device which displays an image by projecting the image on a screen includes a laser light source for emitting coherent light, a display device for forming an image to be displayed on a screen in an area illuminated by a luminous flux from the laser light source, a first diffusion plate for diffusing a luminous flux, and a second diffusion plate for diffusing a luminous flux. The first diffusion plate is provided in at least one of a conjugate position of the laser light source or the vicinity of the conjugate position in the optical path of the optical system including the laser light source through the screen. The second diffusion plate is provided in at least one of a conjugate position of the display device and the vicinity of the conjugate position.Type: GrantFiled: April 12, 2010Date of Patent: July 8, 2014Assignee: Olympus CorporationInventors: Kazuaki Murayama, Kanto Miyazaki
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Publication number: 20140176916Abstract: There is provided a light source unit having a light source which emits a laser beam, a plurality of diffusing plates on which the laser beam is incident and which emit the laser beam incident thereon as diffuse light, and a driving mechanism which moves the plurality of diffusing plates, wherein the laser beam from the light source is incident on one diffusing plate of the plurality of diffusing plates, and diffuse light emitted from the one diffusing plate is incident on the other diffusing plate of the plurality of diffusing plates.Type: ApplicationFiled: December 19, 2013Publication date: June 26, 2014Applicant: Casio Computer Co., Ltd.Inventor: Hiroki MASUDA
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Publication number: 20140168615Abstract: The present invention provides a microlens array including multiple microlenses arranged axially parallel to one another, wherein entrance surfaces of the microlenses on which light is incident are made of resin, and exit surfaces of the microlenses from which light exits are made of glass.Type: ApplicationFiled: December 16, 2013Publication date: June 19, 2014Applicant: CASIO COMPUTER CO., LTD.Inventors: Makoto SATO, Hideki NAKAMURA, Hiroshi OGINO
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Patent number: 8755059Abstract: A portable multiuse projector is described. The device includes a fiber-optic projection system which allows the portable multiuse projector to have the capability to copy, scan, print and fax. A personal computer or laptop input allows for presentations, copy, scan, print and fax functions from the convenience of a laptop anywhere and anytime. Moreover, the multiuse projector of the invention is supplied with USB and other ports to accommodate tablet or electronic book presentations, external hard drive and/or mouse or input device usage.Type: GrantFiled: November 8, 2012Date of Patent: June 17, 2014Assignee: Taishita LLCInventor: Eugene LeGrande
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Publication number: 20140160442Abstract: An apparatus and method that reduces speckle from continuous-wave lasers by using stimulated Raman scattering in an optical fiber. The fiber core diameter and length are selected to achieve a desired output color and level of despeckling. Single-mode fiber may be utilized to achieve a sufficiently high power density to generate stimulated Raman scattering.Type: ApplicationFiled: February 18, 2014Publication date: June 12, 2014Inventors: Ian Lee, Barret Lippey
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Patent number: 8746897Abstract: An optical projection system for projecting an enlarged image on a projection surface is provided. The optical projection system includes an image forming element, a coaxial optical system and a concave mirror. The coaxial optical system and the concave mirror are arranged in this order on an optical path from the image forming element to the projection surface. The coaxial optical system includes lens groups and an aperture stop that share an optical axis. The lens groups include a first lens group and other lens groups. The first lens group has negative refractive power and independently moves in an optical axis direction for adjusting the focus of the optical projection system. The aperture stop is arranged at a position closer to the image forming element than the first lens group that is arranged closest to the concave mirror among the lens groups having the negative refractive power.Type: GrantFiled: December 9, 2011Date of Patent: June 10, 2014Assignee: Ricoh Company, Ltd.Inventor: Hibiki Tatsuno
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Patent number: 8746892Abstract: An illuminating optical system includes: a substantially rectangular-shaped light source that includes a light emitting surface with a split pattern formed thereat by a splitting line, the splitting line extending along a predetermined direction and splitting the light emitting surface into a plurality of separate areas; an illumination-target member that includes a rectangular radiation-target area; and an optical member in that condenses light departing the light emitting surface and radiates the condensed light toward the radiation-target area, wherein: an extent of uneven illumination attributable to an image of the split pattern at the light emitting surface of the light source, formed at the illumination-target member, is reduced.Type: GrantFiled: February 16, 2012Date of Patent: June 10, 2014Assignee: Nikon CorporationInventor: Takao Goto
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Patent number: 8740387Abstract: An autostereoscopic display apparatus is provided and includes a first lenticular lens array, a second lenticular lens array, an optical diffuser layer, an image projector module and a switch unit. The optical diffuser layer is disposed between the first lenticular lens array and the second lenticular lens array. Multiple image beams generated by the image projector module are projected to a plurality of observing regions on an observing plane through the first lenticular lens array, the optical diffuser layer and the second lenticular lens array. The switch unit rotates the second lenticular lens array in accordance with the autostereoscopic display apparatus operates situated at a three-dimensional (3D) display mode or a two-dimensional (2D) display mode.Type: GrantFiled: April 23, 2012Date of Patent: June 3, 2014Assignee: Delta Electronics, Inc.Inventor: June-Jei Huang
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Patent number: 8740388Abstract: A light source apparatus includes: a light source that emits blue component light; a polarization adjuster that adjusts a polarization state of the blue component light emitted from the light source; a separation optical element that separates the blue component light emitted from the light source into a first optical path and a second optical path according to the polarization state adjusted by the polarization adjuster, the first optical path being for using the blue component light as excitation light, the second optical path being for using the blue component light as reference image light; a luminous body provided on the first optical path and that emits reference image light in response to the excitation light; and a combine optical element that combines the first optical path and the second optical path into a single optical path.Type: GrantFiled: July 29, 2011Date of Patent: June 3, 2014Assignee: SANYO Electric Co., Ltd.Inventors: Michihiro Okuda, Shinya Matsumoto
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Publication number: 20140139811Abstract: A projector includes a power receiving terminal, a light source that emits light based on electric power supplied to the power receiving terminal, a light diffuser that adjusts the degree of diffusion of the light from the light source, a specifying section that alternately specifies one of illumination projection and image projection every time electric power supply to the power receiving terminal is started, and a light diffusion controller that controls the light diffuser so that when the specifying section specifies the illumination projection, the light diffuser diffuses the light from the light source, whereas when the specifying section specifies the image projection, the light diffuser transmits the light without substantially diffusing the light.Type: ApplicationFiled: October 31, 2013Publication date: May 22, 2014Applicant: SEIKO EPSON CORPORATIONInventors: Hiroaki SHINHA, Koichi MIYASAKA, Hirofumi KASUGA, Tadashi KINEBUCHI, Shuji NARIMATSU, Kaoru YAMAGUCHI, Hidehito IISAKA
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Patent number: 8727543Abstract: A laser beam generated by a laser light source is reflected by a light beam scanning device and irradiated onto a hologram recording medium. On the hologram recording medium, an image of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin. The light beam scanning device bends the laser beam at the scanning origin and irradiates the laser beam onto the hologram recording medium. At this time, scanning is carried out by changing a bending mode of the laser beam with time so that an irradiation position of the bent laser beam on the hologram recording medium changes with time. Regardless of an irradiation position of the beam, diffracted light from the hologram recording medium produces a reproduction image of the scatter plate on the spatial light modulator. The modulated image of the spatial light modulator is projected onto a screen.Type: GrantFiled: September 7, 2010Date of Patent: May 20, 2014Assignee: Dai Nippon Printing Co., Ltd.Inventors: Makio Kurashige, Kazutoshi Ishida, Tomoe Takanokura, Yasuyuki Oyagi
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Patent number: 8721089Abstract: The image projection apparatus is disclosed to which plural interchangeable optical units are selectively attachable. The apparatus includes a shift mechanism moving an attached optical unit, which is one of the plural interchangeable optical units that is attached to the apparatus, with respect to a light modulation element in a direction orthogonal to an optical axis, an actuator driving the shift mechanism, and a controller controlling drive of the actuator using a control parameter for moving the attached optical unit by a specific movement amount via the shift mechanism. The controller acquires information on at least one of a weight and an optical characteristic of the attached optical unit from a memory provided in one of the apparatus and the attached optical unit, and to change the control parameter using the acquired information.Type: GrantFiled: February 22, 2012Date of Patent: May 13, 2014Assignee: Canon Kabushiki KaishaInventors: Junichi Hatakeyama, Azusa Sugawara
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Patent number: 8721091Abstract: An optical system having a plane anisotropic retroreflector portion which specularly reflects radiation components in a first plane of incidence, but retroreflects radiation components in a second plane of incidence, a first imaging portion which produces on the retroreflector portion a line-shaped intermediate image of an object point in an object plane in a specified position relative to the system, the image extending along a line in the second plane of incidence, and a second imaging portion by means of which the line-shaped intermediate image is imaged into an image point.Type: GrantFiled: June 17, 2010Date of Patent: May 13, 2014Assignee: Giesecke & Devrient GmbHInventor: Bernd Wunderer
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Patent number: 8721087Abstract: A light source device includes: light sources arranged in a plane; collimator lenses disposed in the vicinities of corresponding each of the light sources, each of the collimator lenses collimating a light beam emitted from the corresponding light source, and a holder that holds the light sources and the collimator lenses. The holder holds the light sources and the collimator lenses so that optical axes of the collimator lenses are respectively shifted parallel to optical axes of the light sources by shift lengths that are set so that light beams emitted from the light sources via the collimator lenses are focused on a certain region of an illumination subject body. The light beams emitted from the light sources are refracted by the collimator lenses and focused on the certain region.Type: GrantFiled: March 30, 2012Date of Patent: May 13, 2014Assignee: Casio Computer Co., Ltd.Inventor: Hideyuki Kurosaki
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Patent number: 8721088Abstract: A lens array module includes a light incident surface, a light emitting surface opposite to the light incident surface, and a plurality of first and second lens surfaces. The first lens surfaces are arranged on the light incident surface to form into an array. The second lens surfaces are arranged on the light emitting surface to form into an array. The center of curvature of each of the first lens surfaces located at two opposite sides of a first reference point on the light incident surface deviates away from the first reference point in a direction parallel to a first reference axis, and the center of curvature of each of the second lens surfaces located at two opposite sides of a second reference point on the light emitting surface deviates toward the second reference point in a direction parallel to the first reference axis. A projection apparatus is also provided.Type: GrantFiled: May 29, 2011Date of Patent: May 13, 2014Assignee: Young Optics Inc.Inventors: Yi-Hao Kang, Jiunn-Lih Lin, Chia-Chang Lee, Chi-Tang Hsieh
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Patent number: 8714748Abstract: A light source system for a projection device and a projection device comprising the same are provided. The light source system comprises an optical component assembly and a first light source module. The first light source module has a first light emitting diode (LED) and a first reflection cover. The first LED is configured to generate beams. The first reflection cover has a curved surface to reflect and collect the beams from the first LED into the optical component assembly.Type: GrantFiled: December 9, 2011Date of Patent: May 6, 2014Assignee: Delta Electronics, Inc.Inventor: Hung-Ying Lin
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Patent number: 8714747Abstract: A projector includes a light source, a first light separation optical system adapted to separate light emitted from the light source into first light and second light, a second light separation optical system adapted to separate the first light into third light and fourth light, separate the second light into fifth light and sixth light, and emit the third light, the fourth light, the fifth light, and the six light in directions intersecting with a plane including a light axis of the light emitted from the light source and a light axis of the first light, and a light modulation element which the third light, the fourth light, the fifth light, and the sixth light enter.Type: GrantFiled: July 19, 2012Date of Patent: May 6, 2014Assignee: Seiko Epson CorporationInventors: Koichi Akiyama, Toshiaki Hashizume