Patents Issued in July 10, 2014
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Publication number: 20140192524Abstract: An integrated optic lamp assembly includes a rigid mounting structure, a base, a light source, and a reflector. The base, light source, and reflector are supported by the mounting structure. The base is configured to operationally connect to a light source socket. The reflector is configured and positioned relative to the light source to distribute light emitted from said light source in a predetermined light distribution pattern.Type: ApplicationFiled: January 7, 2013Publication date: July 10, 2014Inventors: Ajaypal S. Naruka, Mark J. Duda, Adam Webster
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Publication number: 20140192525Abstract: A light projection device of the present invention includes a flash discharge tube and a reflector into which the flash discharge tube inserted. The reflector is composed of at least a first reflector and a second reflector. At least a joint between the first reflector and the second reflector is fixed with a conductive fixing material. This structure prevents looseness between the first reflector and the second reflector and facilitates positioning between them. Further, the first reflector and the second reflector are reliably fixed at the same electrical potential to prevent sparks, thereby providing a light projection device capable of achieving stable optical performance.Type: ApplicationFiled: September 25, 2012Publication date: July 10, 2014Applicant: Panasonic CorporationInventors: Erika Kawabata, Katsushi Sumisaki
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Publication number: 20140192526Abstract: The invention discloses an self-adaptive LED fluorescent lamp, comprising: a housing comprising a lampshade and a radiator fastened with each other, a Printed Circuit Board (PCB) consisting of one or more LED lamp sets and LED driving control units, and lamp caps sleeved on two sides of the housing; the LED driving control unit comprises a voltage detection module, an intelligent switching module and a linear constant current module; the voltage detection module comprises a first resistor and a second resistor, which are connected between two output ends of the rectifier filter module for voltage division, and a first capacitor connected with the second resistor in parallel; the intelligent switching module is connected with a common end of the first resistor and the second resistor, the output of the intelligent switching module is connected with a plurality of LED lamp sets, and each of the LED lamps is connected with a compensation resistor in series; and the linear constant current module consists of twoType: ApplicationFiled: October 8, 2012Publication date: July 10, 2014Applicant: NINGBO FUTAI ELECTRIC LIMITEDInventor: Fujun Qiu
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Publication number: 20140192527Abstract: Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing.Type: ApplicationFiled: February 4, 2013Publication date: July 10, 2014Applicant: Koninklijke Philips Electronics N.V.Inventors: Kevin J. DOWLING, Ihor A. Lys, Ryan C. Williamson, Brian Roberge, Ron Roberts, Frederick Morgan, Michael Jay Datta, Tomas Jonathan Mollnow
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Publication number: 20140192528Abstract: A light-emitting device and a luminaire that can reduce glare are provided. A light-emitting device according to an embodiment includes a substrate, an LED chip mounted on the lower surface of the substrate, a light reflecting member arranged downward and on one side when viewed from the LED chip and opened on the other side, a surface of the light reflecting member opposed to the LED chip being a light reflecting surface, and an optical member configured to guide light emitted from the LED chip and reflected by the light reflecting member downward.Type: ApplicationFiled: September 26, 2011Publication date: July 10, 2014Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Masaru Inoue, Makoto Kawagoe, Junya Hayashi, Masaru Matsuno
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Publication number: 20140192529Abstract: An LED apparatus of the type including (a) a mounting board having an LED-supporting surface with an LED device thereon and (b) a lens member over the LED device establishing a light path therebetween. The inventive LED apparatus includes a lens-aligning member having front and back surfaces. The lens member includes a lens portion and a flange thereabout, the flange being attached to the front surface of the lens-aligning member such that the lens portion substantially surrounds the protruding LED device. The lens-aligning member has a first mating feature which is positioned and arranged for mating engagement with a second mating feature of the mounting board, thereby accurately aligning the lens member over the LED device by accurately aligning the lens-alignment member with the mounting board. Other aspects of the invention is a method for assembly of an LED apparatus and a method for manufacturing custom high-efficiency LED lensing for LED-array modules.Type: ApplicationFiled: January 7, 2013Publication date: July 10, 2014Applicant: CREE, INC.Inventor: Kurt S. Wilcox
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Publication number: 20140192530Abstract: A freely-foldable flexible LED screen includes multiple LED sub-screens, PCBs disposed inside casings of the LED sub-screens, LEDs disposed on the PCB, and conducting wires electrically connecting the PCBs. Adjacent LED sub-screens are connected using a connection mechanism capable of freely rotating, which includes a rotation rod, and rotation shafts disposed at two ends of the rotation rod; the casing of the LED sub-screen includes a front casing and a rear casing; where grooves are symmetrically disposed at edges of the front and rear casings, the rotation shafts at two ends of the rotation rod are respectively installed in grooves in the casings of two adjacent LED sub-screens, the grooves of the front and rear casings are further provided with close covers connecting the rotation shafts, where the close cover corresponding to the rotation shaft is provided with a rotation shaft groove that is rotatably connected to the rotation shaft.Type: ApplicationFiled: January 22, 2013Publication date: July 10, 2014Inventor: Yanping Liu
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Publication number: 20140192531Abstract: A light unit includes a bulb having a light source with lead wires and a separator, a switch member that includes a support member and a pair of spring terminals, and a socket having two or more conductive terminals and adapted to receive the bulb and the switch member. The switch member is adapted to cause the pair of spring terminals to contact one another to form an electrical short circuit across the pair of conductive terminals and the light source when the bulb is completely or partially removed from the socket. The lead wires form an electrical connection across the conductive terminals and the separator breaks contact between the pair of spring terminals when the bulb is seated in the socket.Type: ApplicationFiled: March 10, 2014Publication date: July 10, 2014Applicant: SEASONAL SPECIALITIES, LLCInventors: Steven J. Altamura, Robert C. Neuman, Dennis Wang
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Publication number: 20140192532Abstract: System and method for fluorescent light excitation and detection from samples to enhance the numerical aperture and/or reduce the cross-talk of the fluorescent light.Type: ApplicationFiled: December 16, 2013Publication date: July 10, 2014Applicant: Applied Biosystems, LLCInventors: Richard Reel, Eric Nordman
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Publication number: 20140192533Abstract: Embodiments described herein provide apparatus and methods for processing semiconductor substrates with uniform laser energy. A laser pulse or beam is directed to a spatial homogenizer, which may be a plurality of lenses arranged along a plane perpendicular to the optical path of the laser energy, an example being a microlens array. The spatially uniformized energy produced by the spatial homogenizer is then directed to a refractive medium that has a plurality of thicknesses. Each thickness of the plurality of thicknesses is different from the other thicknesses by at least the coherence length of the laser energy.Type: ApplicationFiled: February 13, 2014Publication date: July 10, 2014Applicant: Applied Materials, Inc.Inventor: Stephen MOFFATT
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Publication number: 20140192534Abstract: A display device includes: a display panel; a resin layer on the display panel and having a first protrusion having a first style on a surface thereof; a first window on the resin layer and having a second protrusion having a second style on a surface thereof; and a second window on the first window.Type: ApplicationFiled: December 27, 2013Publication date: July 10, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventor: Jong-Hwan Cho
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Publication number: 20140192535Abstract: An indicator light includes at least one segment. Each segment includes a housing forming an interior and an exterior surface with a light source within. A light filter comprises a transparent or translucent stretchable elastomeric ring processed to pass a desired color and dimensioned to fit on the exterior surface of the housing.Type: ApplicationFiled: June 21, 2013Publication date: July 10, 2014Inventor: Brian Riffel
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Publication number: 20140192536Abstract: A modular lighting device includes a base and a lamp head unit. The base includes a base body and a first connecting module disposed at a top end of the base body and having a first connecting portion and a first conductive portion. The lamp head unit includes a bottom seat, a lamp body disposed on the bottom seat, and a lamp shell connected to the bottom seat. The bottom seat includes a second connecting module disposed at a bottom end thereof and having a second connecting portion connected removably to the first connecting portion, and a second conductive portion electrically connected to the first conductive portion. The lamp shell has a maximum width disposed at a position adjacent to a bottom end thereof and smaller than or equal to that of the bottom seat.Type: ApplicationFiled: January 10, 2013Publication date: July 10, 2014Inventor: Pei-Lin HSIEN
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Publication number: 20140192537Abstract: Provided are a heat sink and a lighting apparatus having same, the heat sink including: a heat radiation plate having a mounting region formed on one side surface thereof on which a driving heat radiation element is mounted, and including a heat radiation hole formed in a central portion thereof, and including a heat radiation hole formed in a central portion thereof; and heat radiation fins provided on the other side surface of the heat radiation plate, and including a plurality of first heat radiation fins radially arranged in a circumferential direction and a plurality of second heat radiation fins having a length shorter than that of the first heat radiation fins and radially arranged between the first heat radiation fins.Type: ApplicationFiled: August 23, 2011Publication date: July 10, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kil Yoan Chung, Seung Hwan Yu, Choul Ho Lee, Kwan Soo Lee
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Publication number: 20140192538Abstract: An armature for an illuminant can comprise: walls formed by an armature composition. The armature composition can comprise an armature polymer, 10 wt % to 20 wt % coated titanium dioxide, and greater than zero to 0.001 wt % carbon black, wherein the weight percentages are based upon a total weight of the armature composition. The armature polymer can comprise polycarbonate. At a thickness of greater than or equal to 3 mm, the armature has a reflection at 700 nm of greater than or equal to 93%. A light fixture can comprise a light source in the armature.Type: ApplicationFiled: January 8, 2014Publication date: July 10, 2014Applicant: SABIC Innovative Plastics IP B.V.Inventors: Mark Berix, Nela Stafie, Hendrikus Petrus Cornelis van Heerbeek, Frank Huijs
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Publication number: 20140192539Abstract: An optical element that may be replaceably mounted to an LED based illumination device. The optical element includes a hollow shell reflector and a plurality of annular shell elements disposed within the hollow shell reflector at different distances from the input port of the optical element. An annular shell element that is closer to the input port of the optical element has a radius that is less than the radius of an annular shell element farther from the input port.Type: ApplicationFiled: March 11, 2014Publication date: July 10, 2014Applicant: XICATO, INC.Inventors: JOHN S. YRIBERRI, CHRISTOPHER R. REED, JIM W. LI, GERARD HARBERS
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Publication number: 20140192540Abstract: Disclosed is a lighting device capable of reducing UGR (Unified Glare Rating). in a illuminating member, reflection efficiency of light significantly scattering to the left and right among light applied to the air gap through the diffusion plate is increased using the adhesion material pattern layer of periphery surrounding an air gap, and simultaneously, the UGR may be reduced by removing the process disposing the pattern with a specific structure and increasing the process efficiency.Type: ApplicationFiled: July 26, 2012Publication date: July 10, 2014Applicant: LG INNOTEK CO., LTD.Inventors: Jun Phill Eom, Dong Mug Seong, Dong Hyun Lee, Beom Sun Hong, Yong In Lee
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Publication number: 20140192541Abstract: A lighting device may include: a mount, which is populated with at least one electronic component and with at least one semiconductor light source, a cover for covering at least one electronic component and at least one connecting element for fastening the cover to the mount, wherein the connecting element is connected to the mount by means of a non-latching connection and to the cover by means of a latching connection.Type: ApplicationFiled: May 9, 2012Publication date: July 10, 2014Applicant: OSRAM GMBHInventors: Guenter Hoetzl, Peter Sachsenweger
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Publication number: 20140192542Abstract: A light-emitting apparatus includes a substrate warped as a whole of which a central portion is most highly raised; a light-emitting device mounted on the central portion of the substrate; a support member disposed on the substrate so as to surround the light-emitting device; and a frame body disposed on the support member so as to surround the light-emitting device, the frame body including part connected to the support member and part not connected to the support member, the part not connected to the support member being left spaced from an upper surface of the substrate. Moreover, the light-emitting apparatus is constituted so that a level of a lower surface of the light-emitting device is higher than a level of a lower surface of the frame body.Type: ApplicationFiled: August 22, 2012Publication date: July 10, 2014Applicant: Kyocera CorporationInventor: Daisuke Sakumoto
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Publication number: 20140192543Abstract: A collapsible lighting device has a main body surrounded by a collar whose position is adjustable along the longitudinal axis of the main body. Pivotally connected or hinged legs are attached to the collar and to the main body with struts. When the collar is on one position, the legs deploy outward from the main body to the extent permitted by the struts, thereby allowing the legs to support the collapsible lighting device upright. A lamp head is attached to a member which telescope from the main body. When deployed, the lamp head can be switched on to provide illumination. When the collar is another position, the legs are drawn in toward the main body to form a cylindrical shape. The lam head can be positioned so that when the telescoping member is retracted into the main body, the collar surrounds the exterior of the lamp head, thus protecting the lamp head for transport.Type: ApplicationFiled: February 16, 2014Publication date: July 10, 2014Applicant: Pelican Products, Inc.Inventors: Kevin DEIGHTON, Darren JUDD
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Publication number: 20140192544Abstract: A lighting assembly that includes an outer housing defining an outer housing axis, an inner housing defining an inner housing axis and a light member positioned in the inner housing. The outer housing includes a front surface having a front opening and an inner surface that defines an adjustment cavity having a truncated spherical shape. The inner housing has a truncated spherical shape and is at least partially received within the adjustment cavity. The inner housing defines a light recess therein and includes a front cover having an aperture defined therein. The front cover at least partially defines the light recess. The light member defines a light axis. The light axis and the inner housing axis are not co-axial and not parallel and form an angle therebetween. The inner housing is adjustable between a home position and a plurality of adjustment positions.Type: ApplicationFiled: January 8, 2014Publication date: July 10, 2014Applicant: C&D Zodiac, Inc.Inventors: Ben Orson, Zhao Jin, Christian Mecke
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Publication number: 20140192545Abstract: An aerodynamic spoiler adapted to be mounted on the tailgate of a pickup truck to enhance under certain driving conditions and to reduce turbulence in the cargo box and having LED lights having the functions of brake light, signal turn light, reverse light, and tail light, with power and signals fed from the original lights within the truck.Type: ApplicationFiled: January 9, 2013Publication date: July 10, 2014Inventors: Calvin Cheuen Kam Law, George Lee
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Publication number: 20140192546Abstract: A light guide is provided that includes a light chamber defined by isotropically luminant top, bottom, and back surfaces, and a front surface having a translucent lens. The light guide also includes a reflective diaphragm within the chamber that defines a top gap between the diaphragm and the top surface, and a bottom gap between the diaphragm and the bottom surface. The light guide further includes an LED light source located between the diaphragm and the back surface of the chamber. The light guide may also be configured with a front surface having a partially transmissive lens and no reflective diaphragm. A vehicle lighting assembly is also provided that includes a plurality of interconnected light chamber sections comprising light guides.Type: ApplicationFiled: January 8, 2013Publication date: July 10, 2014Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Arun Kumar, Mahendra Somasara Dassanayake, Steven Darrell Miller
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Publication number: 20140192547Abstract: A vehicle lighting module is provided that includes a lens having a plurality of near-field lens elements, an input surface, and an exit surface. The lighting module also includes an LED light source that directs incident light through the input surface and out of the exit surface. The plurality of lens elements is configured to transmit from the exit surface a collimated light pattern containing at least 60% of the incident light. Further, a vehicle headlamp assembly is provided that includes a plurality of vehicle lighting modules, each module comprising a lens, and an LED light source that directs incident light through the lens. The assembly further includes a case for housing the lighting modules. The lens includes a plurality of lens elements configured to transmit at least 60% of the incident light in a collimated, vehicular light pattern.Type: ApplicationFiled: January 8, 2013Publication date: July 10, 2014Applicant: Ford Global Technologies, LLCInventors: Arun Kumar, Mahendra Somasara Dassanayake, Albert Ekladyous, Bruce Preston Williams
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Publication number: 20140192548Abstract: A reflector configured to receive and reflect illumination from an illumination device across a projector lens of a vehicle headlight assembly. The reflector includes a reflection surface, a curved edge adjacent to the reflection surface and defining a lower illumination aperture, and a wall member extending across the lower illumination aperture to define a gap portion between the wall member and the curved edge. The wall member is configured to reduce illumination reflected from the reflection surface by blocking an amount of illumination passing through the lower illumination aperture.Type: ApplicationFiled: January 2, 2014Publication date: July 10, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Thomas Kracker, Tony Wang, Frank Ramos, Darrin Roberts, Shinichi Todaka, Dean Bowles, Ippei Yamamoto
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Publication number: 20140192549Abstract: A vehicle headlamp assembly includes a first guiding component. Also included is a headlamp housing having a second guiding component for engaging the first guiding component in a sliding relationship for directing of the headlamp housing toward a loaded position. Further included is at least one locating pin integrally formed with and extending from the headlamp housing, the at least one locating pin configured to extend through an aperture of an adjacent vehicle component for providing stable positioning of the headlamp housing during installation of the vehicle headlamp assembly.Type: ApplicationFiled: January 4, 2013Publication date: July 10, 2014Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: James M. Townson, Richard J. Pyszel, Jeffrey K. Ulrich
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Publication number: 20140192550Abstract: The invention relates to a luminaire that enables the use of more sparsely distributed light sources, having a uniform fixture surface brightness and good color mixing. The luminaire comprises first and second light guide layers (10, 11) optically coupled together by at least one optical coupler (12a, 12b), which allows the passage of light from the first (10) to the second light guide layer (11). The luminaire also comprises a plurality of light sources (16a, 16b), each of which being arranged such that light emitted by the light source (16a, 16b) is coupled into the first light guide layer (10) at an interface surface (17)arranged substantially perpendicularly to a longitudinal axis of the first light guide layer (10). The luminaire further comprises a scattering element (14) adapted to cause light to be emitted from an emitting surface of the second light guide layer (11).Type: ApplicationFiled: May 28, 2012Publication date: July 10, 2014Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Siebe Tjerk De Zwart, Jochen Renaat Van Ggeluwe, Wilhelmus Petrus Adrianus Johannus Michiels, Menno Van Baardwijk, Fetze Pijlman, Cornelis Gerardus Maria De Haas
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Publication number: 20140192551Abstract: A light source apparatus includes: a lamp, a diaphragm device, a CPU that causes the diaphragm device to execute adjustment of an emission amount of illumination light on the basis of a target brightness signal generated based on brightness of an image obtained by picking up an image of a subject; a CPU that switches between illumination modes, and a mode switching switch. During a period after an instruction for switching from one of an illumination mode corresponding to normal light observation mode and an illumination mode corresponding to special light observation mode to the other is given until the switching by the CPU is completed, the CPU causes the diaphragm device to execute adjustment of the emission amount of the illumination light based on a correction value obtained by correcting a current diaphragm value at the time when the instruction for switching is given using a predetermined coefficient.Type: ApplicationFiled: January 15, 2014Publication date: July 10, 2014Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventor: Takahiro MASAKI
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Publication number: 20140192552Abstract: The present invention provides a backlight module which contains a collection device for collecting sunlight, an optical fiber cable, at least a light guide device connecting the collection device through the optical fiber cable, and a diffusion device and an optical member fixed at a distance from a side of each light guide device. Sunlight is collected by the collection device and is introduced into each light guide device; and each light guide device then guides and projects the collected sunlight onto the diffusion device and the optical member sequentially. The energy consumption and environmental friendliness of the backlight module of the present invention are greatly enhanced. The illumination efficiency and lighting uniformity are also improved by a simplified structure.Type: ApplicationFiled: January 14, 2013Publication date: July 10, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Hu He
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Publication number: 20140192553Abstract: A backlight module is disclosed. A light guide plate includes a main body and a plurality of light-varying structures. The main body includes a top surface and a bottom surface. The light-varying structures are formed in the main body. A first optical film is formed on the top surface of the main body of the light guide plate. A second optical film is formed on the bottom surface of the main body of the light guide plate. At least one light source is adjacent to the light guide plate, outputting light into the light guide plate.Type: ApplicationFiled: May 16, 2013Publication date: July 10, 2014Applicant: WISTRON CORP.Inventors: Chin-Yung Liu, Ya-Ping Niu
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Publication number: 20140192554Abstract: Provided is an illumination device that can suppress uneven brightness in a member to be illuminated caused by the positioning structure of the light guide plate. An illumination device (10) includes light sources (11), a light guide plate (13) that guides light from the light sources, and positioning members (14) that position the light guide plate. The light guide plate includes a light-exiting surface (13a) where light exits towards a display panel (2), and a rear surface (13b) arranged on the side opposite to the light-exiting surface. Recessed portions (13e) having a depth that does not reach the light-exiting surface are formed in edges of the rear surface of the light guide plate, and the positioning members engage the recessed portions.Type: ApplicationFiled: August 17, 2012Publication date: July 10, 2014Applicant: Sharp KabushikiI KaishaInventor: Masatoshi Tomomasa
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Publication number: 20140192555Abstract: A planar light apparatus is disclosed and includes a reflection part, a secondary optic device, and a light-emitting device. The secondary optic device has a light incident surface, a light emitting surface, and a side surface, which is an elliptic surface, between the light incident surface and the light emitting surface. A reflecting surface of the reflection part and the light emitting surface face a void space formed between the secondary optic device and the reflection part. Light beams emitted by the light-emitting device into the secondary optic device through the light incident surface can be reflected by the side surface to emit out of the secondary optic device through the light emitting surface into the void space to be reflected by the reflecting surface. Thereby, the planar light apparatus without a conventional light-guiding plate still can offer a planar light source with certain uniformity and can be structured thinner.Type: ApplicationFiled: April 16, 2013Publication date: July 10, 2014Applicants: WINTEK CORPORAITON, Dongguan Masstop Liquid Crystal Display Co., Ltd.Inventors: Zhi-Ting Ye, Wen-Chieh Wu, Ming-Chuan Lin
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Publication number: 20140192556Abstract: A back light unit includes a light source and a light guide unit having a first surface emitting light to a display panel, a second surface facing the first surface, and a plurality of connecting surfaces connecting the first surface and the second surface. The connecting surfaces includes a first side surface, a second side surfaces and a third side surface between the first side surface and a second side surface, A first included angle of the first incident surface and the first diffusion surface is equal to or greater than about 90 degree.Type: ApplicationFiled: October 18, 2013Publication date: July 10, 2014Applicant: Samsung Display Co., Ltd.Inventors: Taek-Sun SHIN, Seul-Gi KIM, Yongkyu KANG, Hayoung LEE
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Publication number: 20140192557Abstract: Disclosed is an edge-lit backlight module having a rectangular back panel with a reflective microstructure, and a first light portion with an inclined plane or a camber is provided for reflecting lights emitted from a plurality of LEDs and with a relatively smaller normal included angle, and a second light portion is provided for reflecting a light with a slightly greater included angle, and a third light portion is provided for reflecting the light with the greatest included angle to guide lights of different intensities to different paths and project the lights to every position of a front panel, so as to achieve a light extraction efficiency with a uniform distribution of luminous intensity of an LED light source.Type: ApplicationFiled: February 22, 2013Publication date: July 10, 2014Applicant: UNITY OPTO TECHNOLOGY CO., LTD.Inventors: KO-WEI LU, WEI-CHUNG LIN, CHUN-HUNG CHEN, JONG-WOEI WHANG, SHIH-MIN CHAO, GUAN-WEI CHEN, YU-HAN HO, YING-CHIA CHEN
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Publication number: 20140192558Abstract: Illumination devices are described for illuminating a target area, e.g., floors of a room, using solid-state light sources. In general, an illumination device includes a first light guide extending along a first plane, the first light guide to receive light from first light emitting elements (LEEs) and guide the light in a first direction in the first plane; a second light guide extending along the first plane, the second light guide to receive light from second LEEs and guide the light in a second direction in the first plane opposite to the first direction; a first redirecting optic to receive light from the first light guide and direct the light in first and second angular ranges; and a second redirecting optic to receive light from the second light guide and direct the light in third and fourth angular ranges, where the first, second, third and fourth angular ranges are different.Type: ApplicationFiled: December 24, 2013Publication date: July 10, 2014Applicant: Quarkstar LLCInventors: Wilson Dau, Louis Lerman, Ingo Speier
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Publication number: 20140192559Abstract: Light guide structures that include a transparent plate having a first end and a second end; and a plurality of transparent light guide members, each transparent light guide member extending from the first end to the second end along one surface of the transparent plate and being configured to emit white light in response to light applied thereto are described.Type: ApplicationFiled: June 14, 2012Publication date: July 10, 2014Applicant: Empire Technology Development LLCInventor: Kenichi Hashizume
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Publication number: 20140192560Abstract: A duty cycle balance module (DCBM) for use with a switch mode power converter. One possible half-bridge converter embodiment includes a transformer driven to conduct current in first and second directions by first and second signals during and second half-cycles, respectively. A current limiting mechanism adjusts the duty cycles of the first and second signals when a sensed current exceeds a predetermined limit threshold. The DCBM receives signals representative of the duty cycles which would be used if there were no modification by the current limiting mechanism and signals Dact—1 and Dact—2 representative of the duty cycles that are actually used for the first and second signals, and outputs signals Dbl—1 and Dbl—2 which modify signals Dact—1 and Dact—2 as needed to dynamically balance the duty cycles of the first and second signals and thereby reduce flux imbalance in the transformer that might otherwise arise.Type: ApplicationFiled: January 7, 2013Publication date: July 10, 2014Inventors: YINGYANG OU, RENJIAN XIE, HUAILIANG SHENG
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Publication number: 20140192561Abstract: A control circuit for switching power converters with synchronous rectifiers is disclosed for providing start-up and shut-down protection. The control circuit for switching power converters with synchronous rectifiers includes a means for blocking the driving signals to the synchronous rectifiers, a voltage sampling circuit, a reference voltage, and a comparator. The comparator compares a sample voltage to a reference voltage to determine when to block and when to admit driving signals to the synchronous rectifiers. The control circuit for switching power converters with synchronous rectifiers is particularly useful for minimizing component damage due to start-up and shut-down transients as compared to converters known in the art.Type: ApplicationFiled: January 10, 2013Publication date: July 10, 2014Applicant: Alcatel-Lucent Canada Inc.Inventor: Martin Plesnik
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Publication number: 20140192562Abstract: A single stage AC/DC converter includes a rectifier to rectify an input AC voltage and output the input AC voltage from first and second input nodes to first and second output nodes, an input capacitor connected between the first and second output nodes to store a rectified voltage and output a constant voltage, a transformer unit to transform the voltage received from the input capacitor, and transmit the voltage to a secondary side, and a power factor correction circuit to correct a power factor of a circuit. The power factor correction circuit includes a first auxiliary diode having one terminal connected with the first input node, a second auxiliary diode having one terminal connected with the second input node, and an auxiliary winding inductor connected among opposite terminals of the first and second auxiliary diodes and the first output node or the second output node.Type: ApplicationFiled: January 10, 2014Publication date: July 10, 2014Applicants: JEONJU UNIVERSITY OFFICE OF INDUSTRY UNIVERSITY COOPERATION, LG INNOTEK CO., LTDInventors: Shin CHO, Young Soo LEE, Eun Soo KIM
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Publication number: 20140192563Abstract: A dual-mode switching power control device includes an electric transformer, a PWM driving controller, a switching transistor, an isolation element, an output diode and an output capacitor. The PWM driving controller is connected to the switching transistor coupled to the electric transformer. The first side inductor of the electric transformer and the switching transistor are coupled to an input power, and the second side inductor of the electric transformer is coupled to the output diode. The output capacitor and a load are connected in series. The output power is converted into a feedback signal by the isolation element. The PWM driving controller determines to perform DCM or CCM based on the feedback signal to control the current flowing through the electric transformer, and the output power is generated. Therefore, the efficiency of power conversion is improved and is suitable for high power applications.Type: ApplicationFiled: October 9, 2013Publication date: July 10, 2014Applicant: INNO-TECH CO., LTD.Inventors: Ching-Yuan Lin, Shu-Chia Lin, Chih Feng Lin
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Publication number: 20140192564Abstract: A switching power converting apparatus is capable of converting an input voltage to an output voltage, and includes a transformer, a primary side control module, and a secondary side control module. The secondary side control module utilizes voltage clamping techniques or current-drawing techniques to stop self-excited conversion from the input voltage to the output voltage when the output voltage is greater than a predetermined target voltage, or utilizes a non-self-excited conversion architecture.Type: ApplicationFiled: May 17, 2013Publication date: July 10, 2014Applicant: RICHTEK TECHNOLOGY CORP.Inventors: Chien-Fu TANG, Tzu-Chen LIN, Isaac Y. CHEN
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Publication number: 20140192565Abstract: A control circuit of a power converter and a method for controlling the power converter are provided. The control circuit of the power converter comprises a switching circuit and a temperature-sensing device. The switching circuit generates a switching signal in response to a feedback signal, and the switching circuit generates a current-sensing signal for regulating an output of the power converter. The temperature-sensing device generates a temperature signal in response to temperature of the temperature-sensing device.Type: ApplicationFiled: January 2, 2014Publication date: July 10, 2014Applicant: SYSTEM GENERAL CORP.Inventor: Chou-Sheng Wang
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Publication number: 20140192566Abstract: A circuit for controlling a programmable power converter is provided. The circuit comprises a control circuit, a switching controller, and a first opto-coupler. The control circuit generates a programmable voltage-reference signal for regulating an output voltage of the programmable power converter. A feedback circuit of the control circuit detects the output voltage for generating a feedback signal in response to the programmable voltage-reference signal and the output voltage. The switching controller detects a switching current of a transformer for generating a switching signal coupled to switch the transformer for generating the output voltage and an output current in response to the feedback signal and the switching current of the transformer. The first opto-coupler transfers the feedback signal from the control circuit to the switching controller. The control circuit is at the secondary side of the transformer and the switching controller is at the primary side of the transformer.Type: ApplicationFiled: October 4, 2013Publication date: July 10, 2014Applicant: SYSTEM GENERAL CORPORATIONInventor: Ta-Yung YANG
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Publication number: 20140192567Abstract: A system for generating a duty cycle control signal for controlling an inverter power train providing an output current waveform to a grid operating with a grid voltage waveform compares a reference current waveform shaped to the grid voltage waveform with the output current waveform to generate an error signal. The error signal is used to generate a corrective control action signal, which is combined with a feed-forward signal representing a nominal duty cycle generated with a feed-forward function. The combination of the feed-forward signal and the corrective control action signal provide the duty cycle control signal.Type: ApplicationFiled: December 27, 2013Publication date: July 10, 2014Applicant: AEG Power Solutions BVInventor: Didier Balocco
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Publication number: 20140192568Abstract: Provided is a maximum power point (MPP) tracker for a PV cell inverter, and a PV cell inverter. The MPP tracker decouples output power oscillations from the input power generation and extracts maximum available power from the PV cell. The PV cell inverter uses the MPP tracker and generates a sinusoidal output current from the MPP tracker output. The sinusoidal output current may be fed to a power distribution grid. The PV cell inverter may use a pulse width modulation technique to cancel harmonics in the sinusoidal output current. The circuits use a minimum number of components and avoid use of large electrolytic capacitors.Type: ApplicationFiled: February 5, 2014Publication date: July 10, 2014Applicant: SPARQ Systems Inc.Inventors: Ali Khajehoddin, Praveen K. Jain, Alireza Bakhshai
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Publication number: 20140192569Abstract: Apparatus and methods for generating an overvoltage signal from a bias winding signal of a power converter transformer are disclosed. In one example, an overvoltage protection circuit may include a current augmentation circuit and a detection circuit. The current augmentation circuit may be coupled to receive the bias winding signal, which may be representative of the power converter output. The current augmentation circuit may include a threshold circuit and a filter circuit that may generate a filtered level shifted signal from the bias winding signal. The current augmentation circuit may generate an augmented signal from the filtered level shifted signal. The detection circuit may be coupled to receive the augmented signal and to generate an overvoltage signal by comparing the augmented signal with a reference voltage. When high asserted, the overvoltage signal may indicate a potential overvoltage condition at the output of the power converter.Type: ApplicationFiled: January 8, 2013Publication date: July 10, 2014Inventor: Marvin Cruz ESPINO
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Publication number: 20140192570Abstract: According to an embodiment, a power generation system is provided comprising a power generator; a plurality of converter modules, each converter module having a DC link, wherein the DC link of each converter module is connected to the DC links of the other converter modules of the plurality of converter modules via a fuse associated with the converter module; and a controller configured to, if it is detected that there is a fault in one of the converter modules, disconnect the converter module in which there is a fault from the power generator and connect two or more other converters module of the plurality of converter modules to the power generator and to control the power generation system to supply power to the DC links of the two or more other converter modules such that power is supplied to the converter module in which there is a fault via the fuse associated with the converter module such that the fuse associated with the converter module melts.Type: ApplicationFiled: July 11, 2012Publication date: July 10, 2014Applicant: VESTAS WIND SYSTEMS A/SInventors: John Godsk Nielsen, Ove Styhm
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Publication number: 20140192571Abstract: An under voltage lockout circuit configured to set a minimum turn-on voltage for a load is provided. The circuit includes an input terminal configured to receive an input voltage. The circuit includes a first transistor configured to become conductive to supply the input voltage to the load when an input voltage to the under voltage lockout circuit exceeds a threshold, and a second transistor coupled to the first transistor, the second transistor configured to become conductive to supply the input voltage to a first resistor and not to the load when an input voltage to the under voltage lockout circuit falls below the threshold.Type: ApplicationFiled: January 10, 2013Publication date: July 10, 2014Inventor: Michael Gasperi
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Publication number: 20140192572Abstract: A power converter includes a group of serial three-level inverters including 2n (n=2) three-level inverters connected in series, two switch circuits for selecting an output from either one of two of the three-level inverters in the group of serial three-level inverters, and a switch circuit for selecting an output from either one of the switch circuits. Each three-level inverter includes two switch elements connected in series, two capacitors connected in series, and a switch element for connecting the first node to the second node, the switch elements being connected in parallel to the capacitors.Type: ApplicationFiled: December 23, 2013Publication date: July 10, 2014Applicant: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYS. CORP.Inventor: Shinzo TAMAI
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Publication number: 20140192573Abstract: A power conversion circuit includes a high side switching device connected at its collector to the high potential side of a power supply, a low side switching device connected at its emitter to the lowpotential side of the power supply, a first junction to which the emitter of the high side switching device and the collector of the low side switching device are connected, a first diode connected at its cathode to the collector of the high side switching device, a second diode connected at its anode to the emitter of the low side switching device, a second junction to which the anode of the first diode and the cathode of the second diode are connected, an inductance connected between the first and second junctions, and a snubber circuit connected to the first junction and adapted to absorb stored energy in the inductance when a freewheeling current flows.Type: ApplicationFiled: March 11, 2014Publication date: July 10, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Mitsuharu TABATA