Including Selected Wavelength Modifier (e.g., Filter) Patents (Class 362/293)
-
Publication number: 20120127725Abstract: A transparent lateral-light-source structure comprises an invisible light source; and a plate body, comprising a transparent plate, having a rear end face being disposed with a plurality of convex-concave structures; a coating layer, capable of reflecting invisible light, allowing visible light, to pass through, and one end face of the coating layer being coupled to the rear end face; and a transparent material layer, coupled to another end face of the coating layer, and the transparent material layer filling and leveling up the plurality of convex-concave structures; wherein, when invisible light emitted from the invisible light source is projected into the transparent plate, the incident invisible light is reflected by the plurality of convex-concave structures and the coating layer, and further projected out of a front end of the transparent plate, and visible light can pass through the plate body.Type: ApplicationFiled: September 24, 2011Publication date: May 24, 2012Applicant: Era Optoelectronics Inc.Inventors: CHIH-HSIUNG LIN, Shih-Yuan Chang
-
Publication number: 20120127715Abstract: [Objective] To prevent change in a direction of an optical axis of a split light within a plane parallel to a surface on which the beam splitter is installed. [Means] A laser module including a laser light source that emits a laser light and a beam splitter that splits a portion of the laser light emitted from the laser light source. The beam splitter includes a first reflective surface and a second reflective surface that are parallel to each other. The first reflective surface transmits a first portion of the laser light and reflects a second portion of the laser light to the second reflective surface. The second reflective surface receives the second portion of the laser light from the first reflective surface and reflects received laser light in a direction parallel to the laser light emitted from the laser light source.Type: ApplicationFiled: May 6, 2011Publication date: May 24, 2012Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Maiko Ariga, Toshio Sugaya, Toshio Kimura
-
Patent number: 8182115Abstract: Disclosed is a light source device that has lower costs and lower power consumption compared to a halogen lamp, and has the same spectral characteristics as the halogen lamp. The light source device includes a white LED that emits White light having an emission peak in a blue range and an optical filter that partially reduces the quantity of light in the blue range in the white light emitted from the white LED such that the spectral characteristics of the white light emitted from the white LED are close to those of light emitted from a halogen lamp.Type: GrantFiled: August 14, 2009Date of Patent: May 22, 2012Assignee: Fujinon CorporationInventors: Hidenori Takahashi, Noriyoshi Kumazawa
-
Publication number: 20120120672Abstract: Light assembly having reflector (17), a light source (22), an outer light cover (12) having a first color zone (15) and a second, different color or clear zone (16), and an inner lens (19) with a transflective surface. Embodiments of light assemblies described herein are useful, for example, as signs, backlights, displays, task lighting, luminaire, and vehicle (e.g., cars, trucks, airplanes, etc.) components. Vehicle comprising light assemblies include those where the light assembly is a vehicle tail light assembly.Type: ApplicationFiled: July 20, 2010Publication date: May 17, 2012Inventors: Timothy V. Stagg, David A. Ender, Mark E. Napierala, Barry S. Carpenter
-
Patent number: 8177407Abstract: A light unit which includes a plurality of light-emitting diode (LED) light sources arranged in parallel, a light-guiding member arranged on said LED light sources, a light reflecting part for reflecting light from said LED light sources forward, a light diffusion part for outgoing light from the surface of said light-guiding member to outside, and an optical path changing part arranged above said light-diffusion part, wherein a side of said light-guiding member that faces said light diffusion part is flat.Type: GrantFiled: December 6, 2011Date of Patent: May 15, 2012Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Masaya Adachi, Ikuo Hiyama, Makoto Tsumura, Shusuke Endo
-
Patent number: 8172428Abstract: An optical system, light fixture and method are provided that include a light source, a non-circular aperture, a filter apparatus, and a lens. The light source produces a first beam of light, a portion of which is passed by the non-circular aperture. The filter apparatus is positioned proximate to the non-circular aperture and is operable to selectively position a desired portion of a variable density filter in the portion of the first beam of light passed by the non-circular aperture. The lens collects the portion of the first beam of light passed by the non-circular aperture to produce a second beam of light.Type: GrantFiled: May 25, 2007Date of Patent: May 8, 2012Assignee: Whiterock Design, LLCInventor: Thomas A. Hough
-
Publication number: 20120106145Abstract: An operating light (36) and a process are provided for lighting an operating table via an operating light (36). The operating light (36) includes at least one first radiation source (1), which is suitable for producing light (12) with locally different, especially radially outwardly decreasing color temperature distribution (18) in a plane extending at right angles to the work area.Type: ApplicationFiled: July 15, 2011Publication date: May 3, 2012Applicant: Drager Medical GmbHInventors: Hanno Kretschmann, Christian Elsenbach, Patrick Wegner
-
Publication number: 20120106185Abstract: A headlamp of the present invention includes: a laser diode for emitting a laser beam with coherence; and a light emitting section which, upon irradiation with the laser beam from the laser diode, emits light so that the light is outputted from the light emitting device. The headlamp further includes an excitation light output prevention member for preventing the laser beam from the laser diode from being outputted from the headlamp while the laser beam maintains coherence.Type: ApplicationFiled: October 25, 2011Publication date: May 3, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Katsuhiko KISHIMOTO, Yoshitaka Tomomura, Hidenori Kawanishi
-
Patent number: 8167458Abstract: A portable device having within it a multicolour illumination arrangement comprising: a surface; a plurality of light sources, at least one of the plurality of light sources being capable of generating two or more emission colors; and drive means for causing the emission color of the at least one light source to vary; whereby the illumination arrangement can produce a varying illumination through at least part of the surface.Type: GrantFiled: June 28, 2005Date of Patent: May 1, 2012Assignee: Core Wireless Licensing S.a.r.l.Inventor: Gary Wingett
-
Publication number: 20120099312Abstract: A light emitting element includes a resonator structure which has a first reflecting member, a second reflecting member, and a light emission layer placed between the first reflecting member and the second reflecting member, part of light resonated between the first reflecting member and the second reflecting member being transmitted through the first reflecting member or the second reflecting member in the resonator structure, and a band absorption filter transmitting the part of the light transmitted through the first reflecting member or the second reflecting member, wherein a wavelength at which the transmission of the band absorption filter has a minimum value is located between a wavelength at which a resonator output spectrum from the resonator structure has a maximum value and a wavelength at which relative luminous efficiency has a maximum value.Type: ApplicationFiled: June 11, 2009Publication date: April 26, 2012Applicant: PIONEER CORPORATIONInventors: Toshihiro Yoshioka, Toshiharu Uchida
-
Patent number: 8162498Abstract: A solid state lighting device, such as a lamp or light fixture, includes a solid state source and one or more semiconductor nanophosphors dispersed in a light transmissive material in the element. The material is of a type and the nanophosphor(s) are dispersed therein in such a manner that the material bearing the semiconductor nanophosphor(s) is at least substantially color-neutral to the human observer, when the solid state lighting device is off. In some examples, the material appears relatively clear or transparent when the device is off. In other examples, the material appears translucent, e.g. white, when the device is off.Type: GrantFiled: March 23, 2010Date of Patent: April 24, 2012Assignee: ABL IP Holding LLCInventors: David P. Ramer, Jack C. Rains, Jr.
-
Publication number: 20120092872Abstract: A light emitting element includes a resonator structure which has a first reflecting member, a second reflecting member, and a light emission layer placed between the first reflecting member and the second reflecting member, and part of light resonated between the first reflecting member and the second reflecting member is transmitted through the first reflecting member or the second reflecting member in the resonator structure. A wavelength at which a resonator output spectrum from the resonator structure has a maximum value is located between a wavelength at which an inner light emission spectrum of the light emission layer has a maximum value and a wavelength at which relative luminous efficiency has a maximum value.Type: ApplicationFiled: June 11, 2009Publication date: April 19, 2012Applicant: PIONEER CORPORATIONInventors: Toshihiro Yoshioka, Toshiharu Uchida
-
Publication number: 20120092852Abstract: A LLB bulb includes a base, a LED light source configured to emit electromagnetic radiation, and a lens/cover having a light extracting rough surface pattern (LERSP) configured to reduce glare and reflection in the LLB bulb without light loss. A method for fabricating the LLB bulb includes the steps of providing the lens/cover, and forming the light extracting rough surface pattern (LERSP) on the lens/cover. The lens/cover can be fabricated with the light extracting rough surface pattern (LERSP) using a process such as bead blasting, sand blasting, etching (chemical or plasma), or molding.Type: ApplicationFiled: December 28, 2011Publication date: April 19, 2012Applicant: SemilLEDS Optoelectronics Co., LtdInventors: Trung Tri Doan, Jui-Kang Yen
-
Publication number: 20120087106Abstract: The invention relates to a light emitting device (2) comprising a primary light source (10), a light converting medium (14) and an optical structure (16). The primary light source is disposed on a substrate (11). The light converting medium comprising phosphors (14) is arranged for converting at least a part of the primary light to secondary light (II) of a different wavelength. The light converting medium is in a remote phosphor configuration. The optical structure is arranged for receiving a part of the secondary light (II) from the light converting medium and is configured for redirecting the part of the secondary light in a direction towards the first plane but away for the primary light source (10). By providing an optical structure redirecting the secondary light away from the primary light source, absorption of the secondary light by the primary light source can be substantially reduced or eliminated.Type: ApplicationFiled: May 27, 2010Publication date: April 12, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Erno Fancsali, Willem Hendrik Smits, Pascal Jean Henri Bloemen
-
Publication number: 20120081880Abstract: A light emitting apparatus includes a lamp base, a light-transmissive bulb envelope, a light source for emitting light, and a heat sink coupled to the light source. A solid state LED light bulb may further include a down conversion material. The down conversion material is disposed within the bulb envelope, remote from the light source and between the light source and the lamp base. The heat sink may include at least one metal fin and, additionally or alternatively, include a mesh disposed over at least an outer portion of the bulb envelope. A solid state light bulb may include a light guide for directing the light emitted by the light source. The solid state light bulb configurations place the light source and heat sink at the apex of the light bulb envelope, distant from the lamp base, in order to dissipate heat produced by the light source into the environment. In addition, at least part of the heat sink is outside the light bulb envelope to maximize the heat dissipation.Type: ApplicationFiled: June 9, 2010Publication date: April 5, 2012Applicant: Rensselaer Polytechnic InstituteInventors: Nadarajah Narendran, Jean Paul Freyssinier, Yiting Zhu
-
Patent number: 8147092Abstract: An illuminating device comprises a base, a light source and at least one first layer, wherein said light source is assembled on said base to emit a first color temperature light, while first layer is located on the base along the first light irradiation path. The first light is passed through the first layer to react with said first layer to form a second color temperature light for emission, wherein said first color temperature is ranged from 2800K to 20000K, while excitation wavelength range of said first layer is mainly beyond the wavelength of ultraviolet lights for further adjusting the second color temperature range.Type: GrantFiled: March 18, 2008Date of Patent: April 3, 2012Assignee: Lextar Electronics Corp.Inventors: Meng-Chai Wu, Chien-Lung Lee
-
Publication number: 20120069250Abstract: A lighting device achieves power saving and a moderate illumination brightness distribution without having local dark portions. A lighting device 12 includes a light source 17, a chassis 14 and an optical member 15a. The optical member 15a includes a light source overlapping portion DA that overlaps a light source installation area LA where the light source 17 is arranged. A light reflecting portion 50 is formed on at least the light source overlapping portion DA. The optical member 50 has maximum light reflectance Rmax and minimum light reflectance Rmin, and the maximum light reflectance Rmax is 40% or higher in the light source overlapping portion DA and an entire half-value width H having light reflectance of (Rmax+Rmin)/2 occupies 25% to 80% in a transmission area TA of the optical member 15a through which the light from the light source transmits.Type: ApplicationFiled: March 12, 2010Publication date: March 22, 2012Applicant: SHARP KABUSHIKI KAISHAInventor: Yasumori Kuromizu
-
Publication number: 20120065006Abstract: An apparatus has a housing, a connector, and a light source connected to the housing. The light source projects lines that define an area for an activity, such as playing a game. The connector connects the housing to a structure used in the activity or game.Type: ApplicationFiled: August 31, 2011Publication date: March 15, 2012Inventor: Steven D. Vogt
-
Publication number: 20120063145Abstract: A transparent sheet for use with a light emitting body with one of surfaces of the transparent sheet being adjacent to the light emitting body, wherein the other surface of the sheet is divided into a plurality of minute regions ?, a largest inscribed circle of the minute regions ? having a diameter from 0.2 ?m to 1.5 ?m, each of the minute regions ? being adjoined by and surrounded by two or more other ones of the plurality of minute regions ?, the plurality of minute regions ? include a plurality of minute regions ?b which are randomly selected from the plurality of minute regions ? so as to constitute 40% to 98% of the minute regions ? and a plurality of minute regions ?a which constitute the remaining portion of the minute regions ?, the minute regions ?a are provided with a first tiny element which has thickness d and effective refractive index na, and the minute regions ?b are provided with a second tiny element which has thickness d and effective refractive index nb, nb being greater than na.Type: ApplicationFiled: April 27, 2010Publication date: March 15, 2012Applicant: PANASONIC CORPORATIONInventors: Jyunpei Matsuzaki, Shin-ichi Wakabayashi, Seiji Nishiwaki, Tatsuya Nakamura
-
Publication number: 20120063144Abstract: A rainbow wheel that colors light that is passed therethrough. The wheel can be formed using a photolithographic process. Another supermagenta wheel can be used to increase the number of colors that can be obtained.Type: ApplicationFiled: November 22, 2011Publication date: March 15, 2012Applicant: PRODUCTION RESOURCE GROUP, L.L.C.Inventor: James Bornhorst
-
Patent number: 8132939Abstract: An LED module with a blue LED chip, over which is arranged a conversion layer, which has a luminous material mixture mixing a further proportion of greater wavelength into the blue light, so that a reddish or greenish or yellowish white light is emitted from the LED module, the emitted light of the LED module having a peak or secondary peak in the red or green or yellow range.Type: GrantFiled: February 13, 2009Date of Patent: March 13, 2012Assignee: Ledon Lighting Jennersdorf GmbHInventors: Christoph Platzer, Bernd Skopec
-
Publication number: 20120057327Abstract: Solid state lamps and bulbs comprising different combinations and arrangements of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffuser. These are arranged on a heat sink in a manner that allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of a co-planar arrangement of LEDs. Additionally, this arrangement allows aesthetic masking or concealment of the appearance of the conversion regions or layers when the lamp is not illuminated. Various embodiments of the invention may be used to address many of the difficulties associated with utilizing efficient solid state light sources such as LEDs in the fabrication of lamps or bulbs suitable for direct replacement of traditional incandescent bulbs.Type: ApplicationFiled: February 24, 2011Publication date: March 8, 2012Inventors: LONG LARRY LE, Ronan Letoquin, Bernd Keller, Eric Tarsa, Paul Pickard, James Michael Lay, Tao Tong, Mark Youmans, Theodore Lowes, Nicholas W. Medendorp, JR., Antony Van de Ven, Gerald Negley
-
Patent number: 8128247Abstract: The invention relates to an illumination device for flashlight photography comprising at least one reflector chamber which, in use, can be arranged in the direction of an object being photographed, having at least one reflector and at least one flash element arranged in the reflector chamber as first light source, as well as at least one UV filter element which, in use, covers the reflector chamber on a radially extending outer face in the direction of the object being photographed, the filter element having at least one ventilation opening. By means of the arrangement, an illumination device suitable for all fields of application is to be provided, a particular objective being to generate flash series of any desired length and at the same time to provide optimum UV protection on the illumination device. Uses of such an illumination device are also defined.Type: GrantFiled: July 17, 2008Date of Patent: March 6, 2012Assignee: Bron Elektronik AGInventors: Francois Portmann, Marcel Griessman
-
Publication number: 20120044439Abstract: A lighting device 12 includes a light source 17, a chassis 14 housing the light source 17 and an optical member 15a provided to face the light source 17. The optical member 15a includes a light source overlapping portion DN that overlaps a light source installation area of the chassis 14 where the light source 17 is arranged and an empty area overlapping portion DN that overlaps an empty area LN of the chassis 14 where no light source 17 is arranged. A light reflecting portion 40 is formed on at least the light source overlapping portion DA such that light reflectance of the light source overlapping portion DA is relatively higher than that of the empty area overlapping portion DN. A color adjustment portion 50 is formed on the optical member 15a to adjust color of the light source overlapping portion DA and the empty area overlapping portion DN.Type: ApplicationFiled: December 21, 2009Publication date: February 23, 2012Applicant: SHARP KABUSHIKI KAISHAInventor: Yoshiki Takata
-
Patent number: 8118454Abstract: The present teachings relate to semiconductor-based lighting systems and fixtures which process electromagnetic energy from light emitting diodes or the like. A disclosed exemplary system includes at least one occluded remote phosphor and produces substantially white light of desired characteristics. The remote phosphor extends over at least a portion of a surface of a macro optic at an occluded location such that none of the remote phosphor is directly visible through an optical aperture. The phosphor is responsive to electromagnetic energy from a semiconductor device to emit visible light for the emission through the optical aperture.Type: GrantFiled: December 2, 2009Date of Patent: February 21, 2012Assignee: ABL IP Holding LLCInventors: Jack C. Rains, Jr., David P. Ramer
-
Patent number: 8113691Abstract: The present invention provides a drive system for an optical light modulation system employing multiple light modulation element pairs. The each pair is driven by a single motor which drives one axis around which one element of the first pair rotates while the other element of the first pair free floats and rotates about a second axis. While the second axis drives the rotation of the first element of the second pair and the first axis provides a rotation pivot for the second element of the second pair. Thus the two pairs share the two axises providing a more compact drive system that can be used more flexibly in an optical train of an automated multiparameter lighting system.Type: GrantFiled: March 11, 2008Date of Patent: February 14, 2012Assignee: ROBE Lighting s.r.o.Inventor: Pavel Jurik
-
Patent number: 8109656Abstract: A bulb adapted to fit over and around a light-emitting diode emitting a light of a first hue in a predetermined radiation pattern defines an inner cavity for housing the light-emitting diode with a cross-sectional geometry based on the predetermined radiation pattern of the light-emitting diode. The bulb is composed of a light-transmitting material and a light color-converting material, with the light color-converting material converting the light of the first hue into light of a desired hue, which is then viewed over a light-emitting surface of the bulb.Type: GrantFiled: February 4, 2008Date of Patent: February 7, 2012Assignee: Ilight Technologies, Inc.Inventor: George R. Hulse
-
Publication number: 20120026503Abstract: A swept wavelength light source is provided, the light source includes a semiconductor gain device operable to provide amplification, an optical retarding device, the retarding device having a block of material, a beam path with a well-defined beam path length being defined for light within the block of material produced by the gain device, a wavelength selector, and the gain device, the retarding device and wavelength selector being mutually arranged on the base so that a resonator is established for light portions emitted by the gain device and selected by wavelength selector; this does not exclude the presence of further elements contributing to the resonator, such as additional mirrors (including resonator end mirrors), lenses, polarization selective elements, other passive optical components, etc.; wherein the beam path in the retarding device is a part of a beam path of the resonator.Type: ApplicationFiled: January 22, 2010Publication date: February 2, 2012Applicant: EXALOS AGInventors: Jan Lewandowski, Marcus Duelk, Christian Velez
-
Publication number: 20120020080Abstract: A sheet switch module of the present invention includes: a light source; a light guide that guides light from the light source; a sheet switch disposed on the back side of the light guide in a thickness direction of the light guide; and a groove formed in the thickness direction of the light guide in at least one of a surface and the back of the light guide.Type: ApplicationFiled: September 28, 2011Publication date: January 26, 2012Applicant: FUJIKURA LTD.Inventors: Shimpei SATO, Kenji NISHIWAKI, Tomosada INADA, Katsunori HIRATA
-
Publication number: 20120014106Abstract: A light source includes a light source unit which supplies first wavelength light, a wavelength converting unit which converts the first wavelength light into second wavelength light different from the first wavelength light, and a leakage preventing unit which prevents leakage of the first wavelength light out of the light source. The area where the light source unit and the wavelength converting unit are disposed is optically separated from the area where the leakage preventing unit is disposed.Type: ApplicationFiled: September 23, 2011Publication date: January 19, 2012Applicant: Seiko Epson CorporationInventor: Shunji Kamijima
-
Patent number: 8096676Abstract: A high-intensity light source configuration has a long lifetime and can be modulated at a high rate. The configuration includes a movable member mounted to an actuator; a light-emitting phosphor region associated with the movable member; an input light source that illuminates the light-emitting phosphor region at a spot that is fixed relative to an emitted light output region; and a light source controller controlling the movable member actuator and the input light source. The input light source (e.g., laser) provides high-intensity input light to the illuminated spot, causing the light-emitting phosphor region to emit high-intensity output light. The light-emitting phosphor region is moved relative to the illuminated spot so as to reduce optical quenching and photobleaching, to thereby extend the life of the light source configuration. The phosphor region may emit broadband light and/or may include respective sub-regions having phosphors that emit respective peak wavelengths.Type: GrantFiled: April 21, 2010Date of Patent: January 17, 2012Assignee: Mitutoyo CorporationInventors: Paul Gladnick, Yuhua Ding
-
Publication number: 20120008326Abstract: According to research, it found that blue light may cause significant effects on suppressing melatonin. For this reason, a lighting device capable of reducing the phenomenon of melatonin suppression is disclosed in the present invention, the lighting device comprises: a light-emitting device being able to emit a visible light; and a light-filtering device being close to the light-emitting device, wherein when the light-emitting device emits the visible light, the light-filtering device is able to filter a blue light component of the visible light, so as to reduce the blue light component within the visible light emitted by the light-emitting device, then the effects on suppressing the melatonin caused by the visible light are reduced.Type: ApplicationFiled: April 1, 2011Publication date: January 12, 2012Applicant: NATIONAL TSING HUA UNIVERSITY (TAIWAN)Inventor: Jwo-Huei Jou
-
Publication number: 20120008065Abstract: A white light emitting diode includes a blue light emitting diode (“LED”) light source, and a light conversion layer which converts incident light from the blue LED light source into white light. The light conversion layer includes a green light emitting semiconductor nanocrystal and a red light emitting semiconductor nanocrystal. The white light emitting diode has a red, green and blue color (“RGB”) color locus which is within a chrominance error range (±4?E*ab) locus from the constant hue locus of each of sRGB color coordinates, or within a chrominance error range (±4?E*ab) locus from the constant hue locus of each of AdobeRGB color coordinates.Type: ApplicationFiled: July 11, 2011Publication date: January 12, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seoung-Jae IM, Seo-Young CHOI, Eun-Joo JANG
-
Patent number: 8083378Abstract: A display device for increasing brightness of an image generation, including a color cluster system, is provided. The system includes a first color LED cluster having at least a first LED of a first wavelength within a first color range and a second LED of a second different wavelength within the first color range. The light from the first LED may be combined at least partially with light from the second LED The system further comprises a second color LED cluster having at least a first LED of a first wavelength within a second color range and a second LED of a second different wavelength within the second color range. In the second color LED cluster, the light from the first LED may be combined at least partially with light from the second LED.Type: GrantFiled: September 18, 2008Date of Patent: December 27, 2011Assignee: Seiko Epson CorporationInventor: David Kerry Kiser
-
Patent number: 8079730Abstract: An array of light-emitting diodes in LED chips, which can be turned on and off individually or in groups by means of a circuit, is provided with a device for homogenizing a light beam emitted by the turned-on LED chips. This device can be a conversion plate, a potting compound comprising a converter material or scattering particles, or a device for beam shaping comprising a plurality of micro-optics. The light source is particularly suited for headlights, for example in AFS applications.Type: GrantFiled: September 24, 2008Date of Patent: December 20, 2011Assignee: Osram Opto Semiconductors GmbHInventor: Alexander Wilm
-
Patent number: 8075148Abstract: An illumination apparatus includes a transparent substrate, a phosphor layer, an optical wavelength selection filter layer, and a light-emitting device. The transparent substrate includes a first surface and a second surface opposing each other. The phosphor layer is disposed on the first surface side of the transparent substrate. The optical wavelength selection filter layer is disposed on the second surface side of the transparent substrate and configured to transmit light of a first wavelength therethrough and reflect light of a second wavelength that is emitted from the phosphor layer by being excited by the light of the first wavelength. The light-emitting device is configured to emit the light of the first wavelength from the optical wavelength selection filter layer side thereof toward the optical wavelength selection filter layer.Type: GrantFiled: December 4, 2008Date of Patent: December 13, 2011Assignee: Sony CorporationInventor: Naoji Nada
-
Patent number: 8075147Abstract: An optical device for coupling the luminous output of a light-emitting diode (LED) to a predominantly spherical pattern comprises a transfer section that receives the LED's light within it and an ejector positioned adjacent the transfer section to receive light from the transfer section and spread the light generally spherically. A base of the transfer section is optically aligned and/or coupled to the LED so that the LED's light enters the transfer section. The transfer section can comprises a compound elliptic concentrator operating via total internal reflection. The ejector section can have a variety of shapes, and can have diffusive features on its surface as well, including a phosphor coating. The transfer section can in some implementations be polygonal, V-grooved, faceted and other configurations.Type: GrantFiled: September 12, 2008Date of Patent: December 13, 2011Assignee: Light Prescriptions Innovators, LLCInventors: Julio Cesar Chaves, Juan Carlos Minano, Pablo Benitez, William A. Parkyn, Jr., Waqidi Falicoff, Fernando Munoz, Yupin Sun, Oliver Dross, Roberto Alvarez
-
Patent number: 8075161Abstract: A lighting system include a point light source, a tubular color adjustment means, and a light-collecting and mixing element. The color adjustment means has a color-converting tubular structure and an adjusting rod. The tubular structure is made of a light-transmitting medium doped with a wavelength-converting material. The adjusting rod is operably connected to and for adjusting the tubular structure. In operation, the point light source emits light of a first wavelength or hue. The color adjustment means adjustably intersects, through the use of the adjusting rod, the light of the first hue and converts at least a portion of the light of a first hue into a light of another hue. The light-collecting and mixing element collects and mixes the light of a first hue and the light of another hue, and directs the mixed light out the open end.Type: GrantFiled: January 5, 2010Date of Patent: December 13, 2011Assignee: Ilight Technologies, Inc.Inventors: George R. Hulse, Lloyd Wilkiel
-
Publication number: 20110299285Abstract: The invention relates to a filter device for an illumination system, especially for the correction of the illumination of the illuminating pupil, including a light source, with the illumination system being passed through by a bundle of illuminating rays from the light source to an object plane, with the bundle of illuminating rays impinging upon the filter device, including at least one filter element which can be introduced into the beam path of the bundle of illuminating rays, with the filter element including an actuating device, so that the filter element can be brought with the help of the actuating device into the bundle of illuminating rays.Type: ApplicationFiled: August 23, 2011Publication date: December 8, 2011Applicant: CARL ZEISS SMT GMBHInventors: Manfred Maul, Damian Fiolka
-
Publication number: 20110299284Abstract: Solid state light sources, lighting devices and lamps arranged to provide emission with a warm temperature and high CRI. One embodiment of a solid state lighting device according to the present invention comprises a light emitting diode (LED) device capable of emitting light in an emission spectrum. A filter arranged so that at least some light from the LED light source passes through it, with the filter filtering at least some of one or more portions of the light source emission spectrum. The resulting light source light has a different temperature but substantially the same CRI after passing through the filter.Type: ApplicationFiled: June 4, 2010Publication date: December 8, 2011Inventors: ANTONY VAN DE VEN, Gerald Negley, Paul Kenneth Pickard
-
Patent number: 8066409Abstract: A light source device includes a light-condensing device that condenses an illumination light that is emitted from a light source lamp. The light-condensing device includes at least one lens, a lens holder in which a lens is fixedly provided, and a lens holding member. The lens holding member is a member for fixing a lens to the lens holder. The lens holding member causes at least one circumferential portion of the lens to protrude to the lens holder side, and causes the optical axis of the lens to match the optical axis of the illumination light.Type: GrantFiled: August 8, 2008Date of Patent: November 29, 2011Assignee: Olympus Medical Systems Corp.Inventors: Seiki Toriyama, Mutsumi Oshima, Shinji Yamashita, Keiichi Tsuchida, Tomoya Takahashi, Atsushi Shimada, Yusuke Yabe, Kyosuke Mizuno
-
Patent number: 8067884Abstract: A lighting arrangement comprising: a light reflective enclosure; at least one radiation source housed within the enclosure and operable to generate excitation light of a first wavelength range; a substantially spherical optical component mounted over the enclosure opening and at least one phosphor operable to absorb at least a portion of the excitation light and to emit light of a second wavelength range, wherein light generated by the arrangement comprises the combined light of the first and second wavelength ranges and wherein the at least one phosphor material is provided as a layer on at least a part of the surface of the optical component that is enclosed within the volume of the enclosure when the component is mounted to the enclosure.Type: GrantFiled: November 24, 2009Date of Patent: November 29, 2011Assignee: Intematrix CorporationInventor: Yi-Qun Li
-
Publication number: 20110286218Abstract: A system and methods for broad area visual obscuration around a platform. In one embodiment the system comprises a source of visible light, shaping optics and projecting optics. The system projects a light beam onto an illumination area in a sweeping pattern to repetitively illuminate all portions of the illumination area, such that a stationary observer within the illumination area receives repeating pulses of the light at a power, intensity, frequency and duration sufficient to visually impair the observer so as to substantially prevent the observer from discerning the platform between pulses. The light pulses are capable of temporarily blinding human eyes but incapable of causing permanent vision loss.Type: ApplicationFiled: November 16, 2007Publication date: November 24, 2011Inventors: Alan Z. Ullman, Joel E. Anspach, Jeffrey J. Voelker
-
Patent number: 8061874Abstract: A rainbow wheel that colors light that is passed therethrough. The wheel can be formed using a photolithographic process. Another supermagenta wheel can be used to increase the number of colors that can be obtained.Type: GrantFiled: May 20, 2008Date of Patent: November 22, 2011Assignee: Production Resource Group, L.L.C.Inventor: James Bornhorst
-
Patent number: 8057072Abstract: A light-emitting module includes at least one light-emitting element provided on a mount surface of a substratum. A translucent member is provided so as to face the mount surface of the substratum. The translucent member is separated from the light-emitting element and contains a phosphor material that converts a wavelength of light emitted by the light-emitting element. A frame having heat conducting properties is interposed between the substratum and the translucent member. The frame surrounds the light-emitting element. The frame includes an opening that leads light emitted by the light-emitting element to the translucent member, and a heat conductor thermally connected to the translucent member. The heat conductor includes a heat radiator exposed outside of the translucent member.Type: GrantFiled: December 10, 2009Date of Patent: November 15, 2011Assignee: Toshiba Lighting & Technology CorporationInventors: Erika Takenaka, Kozo Ogawa, Keiichi Shimizu, Hiroaki Watanabe, Akimichi Takahashi, Shinji Nogi, Shinichi Kumashiro
-
Patent number: 8052308Abstract: A light source includes a light source unit which supplies first wavelength light, a wavelength converting unit which converts the first wavelength light into second wavelength light different from the first wavelength light, and a leakage preventing unit which prevents leakage of the first wavelength light out of the light source. The area where the light source unit and the wavelength converting unit are disposed is optically separated from the area where the leakage preventing unit is disposed.Type: GrantFiled: April 1, 2008Date of Patent: November 8, 2011Assignee: Seiko Epson CorporationInventor: Shunji Kamijima
-
Patent number: 8052320Abstract: To provide a backlight device with which a color hue and a color purity of a display panel can be improved while suppressing the lowering of the brightness of the display panel. A backlight device (20) comprises a pseudo white LED (21), a light guide plate (22), and a dichroic filter (25) which reflects a light with a predetermined wavelength among the light emitted from the pseudo white LED at a predetermined ratio. The dichroic filter is configured so that the light reflectance changes when the incident angle of the light is changed and a tilt angle to a light emitting surface (21e) of the pseudo white LED can be adjusted.Type: GrantFiled: October 3, 2008Date of Patent: November 8, 2011Assignee: Sharp Kabushiki KaishaInventor: Tetsuya Hamada
-
Publication number: 20110267800Abstract: An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The diffuser dome can disperse the light passing through it into the desired emission pattern, such as omnidirection. In one embodiment, the light source can be blue emitting LED and the phosphor carrier can include a yellow phosphor, with the LED lamp or bulb emitting a white light combination of LED and phosphor light.Type: ApplicationFiled: January 31, 2011Publication date: November 3, 2011Inventors: Tao Tong, Ronan Le Toquin, Bernd Keller, Eric Tarsa, Mark Youmans, Theodore Lowes, Nicholas W. Medendorp, JR., Antony Van de Ven, Gerald Negley
-
LED LAMP OR BULB WITH REMOTE PHOSPHOR AND DIFFUSER CONFIGURATION WITH ENHANCED SCATTERING PROPERTIES
Publication number: 20110267801Abstract: An LED lamp or bulb is disclosed that comprises a light source, a heat sink structure and an optical cavity. The optical cavity comprises a phosphor carrier having a conversions material and arranged over an opening to the cavity. The phosphor carrier comprises a thermally conductive transparent material and is thermally coupled to the heat sink structure. An LED based light source is mounted in the optical cavity remote to the phosphor carrier with light from the light source passing through the phosphor carrier. A diffuser dome is included that is mounted over the optical cavity, with light from the optical cavity passing through the diffuser dome. The properties of the diffuser, such as geometry, scattering properties of the scattering layer, surface roughness or smoothness, and spatial distribution of the scattering layer properties may be used to control various lamp properties such as color uniformity and light intensity distribution as a function of viewing angle.Type: ApplicationFiled: January 31, 2011Publication date: November 3, 2011Inventors: Tao Tong, Ronan Le Toquin, Bernd Keller, Eric Tarsa, Mark Youmans, Theodore Lowes, Nicholas Medendorp, JR., Antony van de Ven, Gerald Negley -
Patent number: RE43321Abstract: A light source lamp unit (10) includes a light source lamp (11), an ellipsoidal reflector (12) and a plate body (19). The plate body (19) is provided behind the reflector (12) with a gap kept therebetween, which has a shape corresponding to the profile of a reflecting portion (122) of the reflector (12). A cooling channel for passing a cooling air is formed between the plate body (19) and the reflector (12). The width of the cooling channel in a direction along an optical axis of the light source lamp (11) is minimized at a part near a neck portion (121) of the reflecting portion (122) and enlarged toward the peripheral edge of the reflecting portion (122) of the reflector (12).Type: GrantFiled: July 12, 2007Date of Patent: April 24, 2012Assignee: Seiko Epson CorporationInventors: Motoyuki Fujimori, Takeshi Takezawa, Hiroyuki Meguro, Masakazu Kitamura