SAMONJI, KATSUYA, YAMANAKA, KAZUHIKO · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2014
Provided are a light source, a light source unit, and a light source module that have a small size and a high output, have high efficiency in coupling with an optical system, and are capable of causing the heating source to efficiently disperse and discharge heat. This light source unit is characterized in that the light source is a semiconductor laser array. The configuration makes it possible to raise the output of the light source and to increase the output of the light source unit as a whole. The light source is further characterized in comprising lenses for converting emitted light into parallel light, and optical elements having a plurality of optical surfaces that have different micro-tilt angles with respect to the principal surface. The micro-tilt angles of the plurality of optical surfaces that intersect with light beams, the light beams resulting from a plurality of emitted light beams passing through the principal point of the lenses, are opposite each other with respect to the principal surface.
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HU, FEI, YANG, JIAYI · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2018
Disclosed are a light source system and a laser light source (300). The laser light source includes two groups of laser groups (20a, 20b), wherein at least one group of laser groups includes at least two lasers (21a, 21b, 21c, 21d), and the light beams (L1) generated by the two groups of laser groups are in the same direction and parallel to each other. The first projections of the two groups of laser groups on the cross section of the light beams formed by the respective emergent light rays thereof are partially overlapped with the second projections in a first direction, which first direction is the connection direction of at least two laser centres of a group of laser groups. The laser light source has the effects of being able to effectively increase the light power density and at the same time reduce the volume of the light source.
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Katsushi Ikeuchi, Yasuyuki Matsushita, Ryusuke Sagawa et al. · Advances in computer vision and pattern recognition · 2020
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SUGIYAMA SUNAO, RAN MUNEKI · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1990
PURPOSE:To realize a low-cost and compact light source with a stable output in a simple structure by guiding irradiated light from a light-emitting element on a substrate to the other edge surface of the substrate and providing a waveguide path of light irradiated as a parallel light flux or focusing light flux. CONSTITUTION:Irradiated light from a light-emitting element 11 is enclosed into a light waveguide path 12 and one part of it is branched into a light Waveguide path is and is allowed to inside a light-receiving element 14. The remaining large part of light passes through a light waveguide path IG and is irradiated from the edge surface of the substrate. At this time, the light waveguide path itself acts as a lens and thus selecting a diffraction factor distribution and the length of light waveguide path 12 properly enables the irradiated light from the edge surface to be a parallel light flux. Branching of light and conversion (lens operation) into parallel light flux are performed within one substrate by light source configured this way.
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PubMed · 2006
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Yuri Nosochkov, Yunhai Cai, Min-huey Wang et al. · 2010
Design of PEP-X high brightness light source machine is under development at SLAC. The PEP-X is a proposed replacement for the PEP-II in the existing 2.2 km tunnel. Two of the PEP-X six arcs contain DBA type lattice providing 30 dispersion free straights suitable for 3.5 m long undulators. The lattice contains TME cells in the other four arcs and 89.3 m wiggler in a long straight section yielding a horizontal emittance of ~0.1 nm-rad at 4.5 GeV. The recent lattice modifications are aimed at increasing the predicted brightness and improving beam dynamic properties. The standard DBA cells are modified into supercells for providing low- undulator straights. The DBA and TME cell phase advance is better optimized. Harmonic sextupoles are added to minimize the sextupole driven resonance effects and amplitude dependent tune shift. Finally, the injection scheme is changed from vertical to horizontal plane in order to avoid large vertical amplitudes of injected beam within small vertical aperture of undulators.
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NASA Technical Reports Server (NASA)
Research on food growth for long duration spacecraft has resulted in a light source for growing plants indoors known as Qbeam, a solid state light source consisting of a control unit and lamp. The light source, manufactured by Quantum Devices, Inc., is not very hot, although it generates high intensity radiation. When Ron Ignatius, an industrial partner of WCSAR, realized that terrestrial plant research lighting was not energy efficient enough for space use, he and WCSAR began to experiment with light emitting diodes. A line of LED products was developed, and QDI was formed to market the technology. An LED-based cancer treatment device is currently under development.
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Martin H. Weik · 2000
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SpringerReference · 2011
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ERIASU SUNITSUTSUAA, SHIYAOURU EZEKIIRU · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1986
A super-radiant light source having an output with a low temporal coherence well suited, for example, to optical inertial sensor applications, includes a single mode optical waveguide such as an optical fiber having its core doped with an active laser material, such as neodymium. Pump light is coupled into the optical fiber at an intensity sufficient to produce a significant amplification of the spontaneous emission. The reflectivity at the exit end of the fiber is low enough so that even with a high gain for the light in one traverse through the fiber, the fiber is operated well below threshold for laser oscillation. The resulting emission is of high intensity, but has a low temporal coherence. In one form, the pump light is coupled into one end of the fiber and a dichroic filter is interposed in the light path between the pump light and the optical fiber to pass pump light into the core and reflect the spontaneous emission of the active material back into the core and toward the output.
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STOPPEL, KLAUS, NUEBEL, KARL-HEINZ, SCHWARZ, HANS-JOCHEN et al. · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2011
The invention relates to a light source, in particular for optically activating a laser device (11), such as a laser device (11) of a laser ignition system (1) of an internal combustion engine (109), comprising a diode laser (13) and a fibre-optic device (12), wherein the fibre-optic device (12) is arranged relative to the diode laser (13) such that light generated by the diode laser (13) couples into the fibre-optic device (12), characterized in that the light source comprises a photodetector (90) for detecting stray light (111) which is scattered at the transition from the diode laser (13) into the fibre-optic device (12).
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KASHYAP, RAMAN · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2007
In a first broad aspect, the invention provides a light source. The light source includes a semiconductor laser for emitting laser light at a first frequency. The light source also includes an optical fibre that includes a fibre Bragg grating. The fibre Bragg grating is optically coupled to the semiconductor laser for receiving the laser light, reflecting a reflected portion of the laser light towards the laser and allowing the transmitted portion of the laser light to pass through the fibre Bragg grating. The fibre Bragg grating has a temperature-dependant reflection spectrum. A frequency converting optical element is optically coupled to the fibre Bragg grating for receiving the transmitted portion of the laser light and converting at least a fraction of the transmitted portion of the laser light into a converted light having a second frequency different from the first frequency. An output port is optically coupled to the frequency converting optical element for outputting the converted light. A temperature controller is thermally coupled to the fibre Bragg grating for modulating a temperature of the fibre Bragg grating so as to modulate the reflection spectrum.
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2009
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Robert Atwood, Robert C. Atwood, Andrew J. Bodey et al. · 2015
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Oc O, Oc O M, Oc O · 2016
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SUGIYAMA SUNAO, RAN MUNEKI · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1990
PURPOSE:To realize a low-cost and compact light source with a stable output in a simple structure by guiding irradiated light from a light-emitting element on a substrate to the other edge surface of the substrate and providing a waveguide path of light irradiated as a parallel light flux or focusing light flux. CONSTITUTION:Irradiated light from a light-emitting element 11 is enclosed into a light waveguide path 12 and one part of it is branched into a light Waveguide path is and is allowed to inside a light-receiving element 14. The remaining large part of light passes through a light waveguide path IG and is irradiated from the edge surface of the substrate. At this time, the light waveguide path itself acts as a lens and thus selecting a diffraction factor distribution and the length of light waveguide path 12 properly enables the irradiated light from the edge surface to be a parallel light flux. Branching of light and conversion (lens operation) into parallel light flux are performed within one substrate by light source configured this way.
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ITO, TAKESHI, YAMAMOTO, EIJI, NISHIO, MASAHIRO et al. · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 2012
A light source system has a light source unit (10-1) comprising: a semiconductor laser (18-1) emitting a primary light; and a connector (14) for a connection unit (22) disposed on top of an optical path for the primary light, that converts the optical properties of the primary light and from which optical conversion units including an optical conversion element that generates a secondary light are removable. The light source unit also comprises an optical conversion unit group configured from a plurality of optical conversion units (12-1, 12-2, 12-3). All of the optical conversion units (12-1, 12-2, 12-3) belonging to the optical conversion unit group can be connected to the light source unit (10-1) using the connection unit (22). As a result, a variety of illumination lights can be achieved using very few members, by connecting using the compatible connection unit (22), similar to how the optical conversion units (12-1, 12-2, 12-3) can be combined with the light source unit (10-1).
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C. Böhler · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2023
A light source fabrication process to fabricate a customized light source includes attaching a plurality of light emitting diodes to a circuit board, where each light emitting diode is configured to emit light within a same wavelength range. Further, the light source fabrication process includes applying a first phosphor layer to a first set of light emitting diodes of the plurality of light emitting diodes and applying a second phosphor layer to a second set of light emitting diodes of the plurality of light emitting diodes. The phosphor layers are applied to the light emitting diodes using one of a screen printing process and an inkjet printing process. The first phosphor layer is different from and has different optical properties from the second phosphor layer.
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YABUUCHI KOUICHI, TSUNODA YOSHITO, KANEDA NORIYA et al. · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1983
PURPOSE:To output parallel light with high precision by fixing a light source or lens to a fixed frame and fixing a member having a coefficient of thermal expansion different from the fixed frame in the position where the distance between the lens and the light source is more shortened the position where the fixed frame and member are fixed. CONSTITUTION:The light source device consists of a semiconductor laser frame 1 for fixing a semiconductor laser, a heat sink 3 for dissipating heat generated by the semiconductor laser, coupling lens 2 for converting laser light into parallel light, the fixed frame where the semiconductor laser frame 1 and coupling lens 2 are coupled fixedly, thermal-expansion absorbing damper 5 arranged between the coupling lens 2 fixed frame 4 in order to absorb variation in the distance between the coupling lens 2 and and a semiconductor light emission point due to thermal expansion, and adjusting screw 6 for adjusting the position of the coupling lens 2.
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MASUDA HISASHI, OKA MICHIO · Institutional Repository of Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (Xian Institute of Optics and Precision Mechanics) · 1989
PURPOSE:To improve coherency by employing as an output laser beam a laser beam component having a frequency of the sum obtained by coupling an oscillation laser beam of a solid laser and a laser beam for converting the wavelength of a semiconductor laser. CONSTITUTION:When a first laser light LA2 obtained from a solid laser 4 and a second laser light LA1 obtained from a semiconductor laser 1 are coupled by a nonlinear optical crystalline element 6, a composite light containing the sum frequency light component of the first laser light LA2 and the second laser light LA1 from the element 6 is obtained. Accordingly, the sum frequency light component is radiated as the output laser light LA3, and a laser beam having substantially similar to the optical characteristic to that the of the solid laser and a wavelength shorter than that of the laser beam LA2 can be easily generated.
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