| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | LIGHTING DEVICE AND PROJECTION IMAGE DISPLAY UNIT | US12509755 | 2009-07-27 | US20100033685A1 | 2010-02-11 | Manabu SEO; Hiroshi AKIYAMA; Shigeru OOUCHIDA; Yukiko HAMANO; Goichi AKANUMA |
| A lighting device, including a first light source emitting light of a first wavelength; a second light source close to the first source, emitting light of a second wavelength in almost a same direction as that of the first source; a third light source located emitting light of a third wavelength in a direction different from that of the first and second sources; a coupling optical system coupling light from the first and second sources; another coupling optical system coupling light from the third source; and a light path synthesizer synthesizing a light path of light from the first, second and third sources, wherein the light path synthesizer includes a first surface reflecting light from the first source and transmitting light from the second and third sources and a second surface unparallel with the first surface, reflecting light from the second source and transmitting light from the third source. | ||||||
| 122 | Mach-Zehnder Light Modulator, Mach-Zehnder Light Modulating Method, Optical Transmitter, Light Modulator, Optical Transmitting Apparatus, and Optical Receiving Apparatus | US12438202 | 2007-05-11 | US20100014862A1 | 2010-01-21 | Akira Suzuki |
| A phase modulator (22) modulates, based on an electrical signal (Sa), the phase of one of optical signals of an input optical signal branched by a light branching circuit (21). Then, a phase modulator (23) performs phase modulation in a smaller amount and opposite polarity as compared to the phase modulator (22) based on an electrical signal (Sc) obtained by delaying the inverse logic signal (Sb) of the electrical signal (Sa) by a predetermined delay time τ shorter than the transient response time of the phase modulator (22) or the rise and fall times of the electrical signal (Sa). A light multiplexing circuit (24) multiplexes the optical signal obtained by the phase modulator (23) with the other optical signal of the input optical signal, thereby outputting a pulse-like output optical signal (36). | ||||||
| 123 | Optical device and producing method thereof | US12385006 | 2009-03-27 | US20090310906A1 | 2009-12-17 | Tetsuya Miyatake |
| An optical device includes: a crystal substrate; an optical waveguide formed in the crystal substrate; and an amorphous area formed in the crystal substrate, adjacent to a curved waveguide of the optical waveguide. The amorphous area is formed by irradiation of an ultrashort pulse laser. | ||||||
| 124 | Optical Modulator | US12085115 | 2006-11-13 | US20090290828A1 | 2009-11-26 | Ryo Shimizu; Takahisa Fujita; Toru Sugamata |
| An optical modulator is provided which suppresses a radiation mode of a microwave generated in a connection substrate or a termination substrate from entering a signal electrode of the optical modulator and suppresses modulation properties from being degraded.The optical modulator includes an optical modulation element (1) having a substrate with an electro-optic effect, an optical waveguide formed on the substrate, and a modulating electrode (or a signal electrode (2)) for modulating light passing through the optical waveguide; and a connection substrate (4), arranged outside the substrate, for supplying the optical modulation element with a microwave signal operating the optical modulation element. A signal input terminal (22) and a signal output terminal (23) are formed on the connection substrate (20). A recombination suppression unit that suppresses a radiation mode (24) of the microwave signal input to the signal input terminal (22) from being recombined with the signal output terminal (23) is provided on the connection substrate. | ||||||
| 125 | WAVELENGTH CONVERSION MODULE, LASER LIGHT SOURCE DEVICE, TWO DIMENSIONAL IMAGE DISPLAY DEVICE, BACKLIGHT LIGHT SOURCE, LIQUID CRYSTAL DISPLAY DEVICE AND LASER PROCESSING DEVICE | US12090064 | 2006-10-11 | US20090279017A1 | 2009-11-12 | Hiroyuki Furuya; Kazuhisa Yamamoto; Kiminori Mizuuchi |
| A wavelength conversion module includes: a first fundamental wave propagation optical fiber for propagating a fundamental wave emitted from a laser light source; a first wavelength conversion element, optically connected to the first fundamental wave propagation optical fiber, for converting the fundamental wave emitted from the first fundamental wave propagation optical fiber into a harmonic wave; and a first harmonic propagation optical fiber, optically connected to the first wavelength conversion element, for propagating the harmonic wave emitted from the first wavelength conversion element, wherein the core diameter of the first harmonic propagation optical fiber is 0.5 to 0.9 times as large as the core diameter of first fundamental wave propagation optical fiber. | ||||||
| 126 | OPTICAL GUIDED MODE SPATIAL SWITCHES AND THEIR FABRICATION | US12400882 | 2009-03-10 | US20090263068A1 | 2009-10-22 | Jamshid Nayyer |
| Optical guided mode fast 1×2 and 2×2 spatial switches are provided that can be used in multimedia communication networks. These switches require a relative refractive index change of only 0.0001˜0.0002 and can be realized using Lithium Niobate, Polymers, semiconductors, etc. Extinction ratios of these switches are made to be better than 45 dB, by introductions of a rear edge adjusted broken electrode and a blocker electrode into their architecture. Optical losses are less than 3 dB, and excellent switching characteristics are achieved by suppressing cross talk to ˜50 dB. The two output ports of the 1×2 (2×2) switch are made to be spatially perpendicular (in opposition) by introduction of air grooves, allowing for two-dimensional integration of unit switches into matrices. System applications of the switch are made flexible due to a discrete drive requirement for each optical input to the 2×2 switch. | ||||||
| 127 | LIGHT SOURCE APPARATUS, IMAGE DISPLAY APPARATUS, AND MONITOR APPARATUS | US12369865 | 2009-02-12 | US20090207618A1 | 2009-08-20 | Akira EGAWA |
| A light source apparatus includes: a light emitting element including a plurality of light emitting modules; a resonator; a transmitting-reflecting module which, being provided in an optical path between the light emitting element and the resonator, reflects one portion of light traveling from the resonator, and transmits another one portion; a current supply module; and at least one wiring module which connects the current supply module and the light emitting element, wherein a normal of a surface of the transmitting-reflecting module on which the light from the resonator falls incident is tilted in a specific direction relative to a main beam of a light flux which travels between the transmitting-reflecting module and the resonator, and at least one of the wiring modules is provided on a side of the light emitting modules opposite to a side of the specific direction. | ||||||
| 128 | Optical modulation element module | US11233573 | 2005-09-23 | US07570843B2 | 2009-08-04 | Norikazu Miyazaki; Masataka Yokozawa |
| The present invention provides an optical modulation element module which is capable of the optical modulation for analog transmission with a low driving voltage and low chirp.An optical modulation element module, in which Mach-Zehnder type optical modulation element 50 having a Mach-Zehnder type waveguide unit having two branched waveguides on a substrate which has electro-optical effect and two modulation electrodes which apply a modulation signal to each branched waveguide, optical input and output units for inputting and outputting a light wave to and from the optical modulation element, and a modulation signal input unit 56 for inputting the modulation signal into the modulation electrodes are placed in a case 51, includes a transformer branching unit 57 in which the modulation signal input unit which corresponds to the two modulation electrodes is formed as one terminal and which divides the modulation signal from the modulation signal input unit into two signals, and applies the divided modulation signals to each modulation electrode. | ||||||
| 129 | Lithium tantalate substrate and method of manufacturing same | US11746211 | 2007-05-09 | US07544247B2 | 2009-06-09 | Tomio Kajigaya; Takashi Kakuta |
| In a process for manufacturing a LT substrate from a LT crystal, after growing the crystal, a LT substrate in ingot form is imbedded in carbon power, or is place in a carbon vessel, and heat treated is conducted at a maintained temperature of between 650° C. and 1650° C. for at least 4 hours, whereby in a lithium tantalate (LT) substrate, sparks are prevented from being generated by the charge up of an electric charge on the substrate surface, and thereby destruction of a comb pattern formed on the substrate surface and breaks or the like in the LT substrate are prevented. | ||||||
| 130 | Low loss bridge electrode with rounded corners for electro-optic modulators | US11855232 | 2007-09-14 | US07426326B2 | 2008-09-16 | Robert P Moeller; James H Cole |
| An electro-optic modulator having a substrate, one or more optical waveguides, at least one active electrode formed on the substrate and aligned over the optical waveguide, the active electrode operating to induce a refractive index change in the optical waveguide. The active electrode has a lower surface arranged facing the substrate, an upper surface arranged away from the substrate, substantially planar side walls, and rounded corners between the side walls and the lower surface of the active electrode. The electrode can be a bridge electrode, with two lower portions and an upper portion connected to the lower portions, the lower portions spaced apart from each other, each of the two lower portions of the active electrode extending over one of the optical waveguides. Each of the lower portions has rounded convex corners. The upper surface of the electrode can also have rounded corners or a completely rounded upper surface. | ||||||
| 131 | Low Loss Bridge Electrode with Rounded Corners for Electro-optic Modulators | US11855232 | 2007-09-14 | US20080089633A1 | 2008-04-17 | Robert Moeller; James Cole |
| An electro-optic modulator having a substrate, one or more optical waveguides, at least one active electrode formed on the substrate and aligned over the optical waveguide, the active electrode operating to induce a refractive index change in the optical waveguide. The active electrode has a lower surface arranged facing the substrate, an upper surface arranged away from the substrate, substantially planar side walls, and rounded corners between the side walls and the lower surface of the active electrode. The electrode can be a bridge electrode, with two lower portions and an upper portion connected to the lower portions, the lower portions spaced apart from each other, each of the two lower portions of the active electrode extending over one of the optical waveguides. Each of the lower portions has rounded convex corners. The upper surface of the electrode can also have rounded corners or a completely rounded upper surface. | ||||||
| 132 | Optical wavelength converter and image forming apparatus using the same | US11474998 | 2006-06-27 | US07330490B2 | 2008-02-12 | Yukio Furukawa; Takashi Yuasa |
| An optical wavelength converter includes a distributed Bragg reflector laser having an active area, a phase area, and a distributed Bragg reflector area in which a distributed Bragg reflector is formed; an optical wavelength conversion device for receiving fundamental wave light emitted from said distributed Bragg reflector laser and outputting second harmonic wave light of the fundamental wave light; and a control circuit for controlling an emission wavelength and a light output by controlling an injection current to be injected into the distributed Bragg reflector laser for each period. The control circuit controls the injection current to be injected into the distributed Bragg reflector laser while satisfying a condition for controlling a light output mode of the distributed Bragg reflector laser so that light energy to be inputted into the optical wavelength conversion device in each period is constant and satisfying a condition for injecting a current into each of an active area, a phase area, and a distributed Bragg reflector area in each of periods in a mode of constant amount of generated heat so that an injection current-emission wavelength characteristic in the distributed Bragg reflector area is constant. | ||||||
| 133 | Lithium niobate coated optical fiber apparatus and method | US11551503 | 2006-10-20 | US07324732B2 | 2008-01-29 | Tracer Jamison; Douglas V. Keller; Philipp Kornreich; James Flattery |
| An optical fiber sensor having a central core, a cladding layer disposed about the central core, and a thin film of lithium niobate positioned between the core and the cladding layer. Each of the cladding layer and the central core are made from glass materials having different indices of refraction. The refractive index of the lithium niobate film changes when stress is applied to the optical fiber sensor. Accordingly, stress may be detected and measured by detecting and measuring the modulation of light passing through the optical fiber sensor while the stress is occurring. | ||||||
| 134 | Optical waveguide, optical device, and manufacturing method of the optical waveguide | US11589183 | 2006-10-30 | US20070297720A1 | 2007-12-27 | Masaki Sugiyama |
| An optical waveguide has a diffusion area (optical waveguide) with a high refractive index formed by diffusing impurities on a substrate. The diffusion area has a bent portion, and the optical waveguide includes: a groove formed by cutting the substrate along the diffusion area on the outside of the bent portion of the diffusion area; and a first buffer layer disposed on the upper portion of the diffusion area, having a refractive index equal to or higher than the refractive index of the substrate. The optical waveguide includes a second buffer layer having a refractive index equal to or lower than the refractive index of the substrate on the upper portion of the first buffer layer, and the second buffer layer is formed including contact with a side face of the groove. | ||||||
| 135 | Method of manufacturing spherical or hemispherical crystal blank and method of manufacturing spherical saw device | US11704125 | 2007-02-08 | US20070200647A1 | 2007-08-30 | Mitsuaki Koyama; Yukihiro Kobayashi |
| A method of manufacturing a spherical crystal blank in which the crystal axis is determined by a simple work with a high degree of accuracy includes the steps of: cutting out a cube from a crystal blank provided with crystal axes including a Z axis, and X and Y axes orthogonal to the Z axis, the cube including the Z axis as a side and being of a size capable of including the spherical crystal blank to be manufactured; then forming a reference hole for Z axis extending along the Z axis direction in reference to the side of the cube in the cube; and thereafter, forming the cube into a sphere so as to include a portion of the reference hole for Z axis. | ||||||
| 136 | Optical functional device and fabrication process of the same | US11644840 | 2006-12-26 | US20070147724A1 | 2007-06-28 | Masashige Ishizaka |
| Arranged for at least one of a pair of branch optical waveguides in a Mach-Zehnder type interference optical system is a ring resonance type phase shifter for modulating a light wave signal propagating through the branch optical waveguide. The ring resonance type phase shifter includes a ring-type optical waveguide arranged so as to be mode-coupled with the corresponding branch optical waveguide, and is configured so that amplitude branching ratio K between the corresponding branch optical waveguide and the ring-type optical waveguide can be varied with a change in refractive index or the like, accompanied by voltage application to a pn junction, for example. As amplitude branching ratio K is varied, the phase difference between the light wave signals propagating through the paired optical waveguides varies, to thereby control the intensity of the light wave signal output from the interference optical system. | ||||||
| 137 | Microwave frequency electro-optical beam deflector and analog to digital conversion | US10949030 | 2004-09-24 | US07233261B2 | 2007-06-19 | William Nunnally; John Gahl; Timothy Renkoski |
| A microwave frequency deflection cell analog to digital converter is provided. The phase velocity of an optical wave is effectively reduced to that of a microwave frequency electro-magnetic signal in an optical deflector. The electro-optic effect is used for a controlled deflection of an optical beam. The angle of beam deflection varies in accordance with an applied voltage, which may be a signal in the microwave frequency range. A device of the invention includes a birefringent crystal having transmission line conductors arranged to create an electric field in the crystal in response to an applied voltage, and mirrors arranged to create a multi-bounce path through the crystal for a light beam directed into the crystal on an entrance path that is non parallel to the mirrors. The multi-bounce path effectively slows the velocity of the optical wave to that of the voltage wave, permitting deflection or modulation of the beam by microwave frequency electrical signals. | ||||||
| 138 | Reciprocating optical modulator | US11094761 | 2005-03-31 | US07212331B2 | 2007-05-01 | Tetsuya Kawanishi; Masayuki Izutsu |
| A reciprocating optical modulator includes a continuous light path fulfilling an amplification function, an optical modulation part formed on the light path, a first optical band-pass filter and a second optical band-pass filter formed to nip the optical modulation part therebetween and a device to introduce exciting light for exciting the light path. The optical modulation part, first and second optical band-pass filters and device are disposed on the light path as formed in a single optical crystal or in a multiplicity of optical crystals. The first optical band-pass filter admits incident light and reflects light having the incident light modulated. The second optical bandpass filter reflects the incident light and emits the light having the incident light modulated. The modulator can also include a third optical band-pass filter disposed between the optical modulation part and the second optical band-pass filter for removing the incident light. | ||||||
| 139 | Lithium tantalate substrate and method of manufacturing same | US11508104 | 2006-08-22 | US20060283375A1 | 2006-12-21 | Tomio Kajigaya; Tokashi Kakuta |
| In a process for manufacturing a LT substrate from a LT crystal, after growing the crystal, a LT substrate in ingot form is imbedded in carbon power, or is place in a carbon vessel, and heat treated is conducted at a maintained temperature of between 650° C. and 1650° C. for at least 4 hours, whereby in a lithium tantalate (LT) substrate, sparks are prevented from being generated by the charge up of an electric charge on the substrate surface, and thereby destruction of a comb pattern formed on the substrate surface and breaks or the like in the LT substrate are prevented. | ||||||
| 140 | PMD emulator | US11087532 | 2005-03-24 | US20050244092A1 | 2005-11-03 | Yu Mimura; Kazuhiro Ikeda |
| A PMD emulator configured by connecting in this order: an input-side optical fiber 71 for receiving light to be measured; a first polarization rotating portion 73 including M DGD sections 76 (M is an integer equal to or more than 2) concatenated by (M−1) polarization rotators 80, one DGD section being arranged at each end of said first polarization rotating portion; an arbitrary-arbitrary polarization controller 75 for changing any state of polarization into any other state of polarization, a second PMD rotating portion 74 configured in the same way as the first polarization rotating portion 73 an output-side optical fiber for outputting the light to be measured. | ||||||
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