| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Nanotube-based optical fuse device and method of blocking light transmission by means of this device | EP13173011.1 | 2013-06-20 | EP2677362A3 | 2014-01-22 | Donval, Ariela; Nevo, Doron; Oron, Moshe; Masliah, Tali Fisher |
An optical fuse or energy-switching-off device (2) includes an optical waveguide (6, 8) having an input section (10) and an output section (12), the two sections (10, 12) forming a pair of opposed surfaces extending transversely through the axes of the waveguide sections. A substantially transparent material (14) is disposed between the opposed surfaces and comprises an electrically conductive nanotube web immersed in a dielectric material, where the nanotubes are not in electrical contact with each other. The substantially transparent material (14) forms a plasma when exposed to optical signals (In) propagating within the optical waveguide (6, 8) with an optical power level above a predetermined threshold, and the plasma damages the opposed surfaces sufficiently to render them substantially opaque to light propagating within the input section (10) of the optical waveguide (6, 8) so as to prevent the transmission of such light.
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| 22 | Nanotube-based optical fuse device and method of blocking light transmission by means of this device | EP13173011.1 | 2013-06-20 | EP2677362A2 | 2013-12-25 | Donval, Ariela; Nevo, Doron; Oron, Moshe; Masliah, Tali Fisher |
An optical fuse or energy-switching-off device (2) includes an optical waveguide (6, 8) having an input section (10) and an output section (12), the two sections (10, 12) forming a pair of opposed surfaces extending transversely through the axes of the waveguide sections. A substantially transparent material (14) is disposed between the opposed surfaces and comprises an electrically conductive nanotube web immersed in a dielectric material, where the nanotubes are not in electrical contact with each other. The substantially transparent material (14) forms a plasma when exposed to optical signals (In) propagating within the optical waveguide (6, 8) with an optical power level above a predetermined threshold, and the plasma damages the opposed surfaces sufficiently to render them substantially opaque to light propagating within the input section (10) of the optical waveguide (6, 8) so as to prevent the transmission of such light.
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| 23 | LIGHT LIMITING WINDOW | EP09769629.8 | 2009-06-18 | EP2307796A1 | 2011-04-13 | DONVAL, Ariela; NEMET, Boaz; NEVO, Doron; ORON, Moshe |
| A passive optical power limiting window comprising a transparent optical input element, a transparent optical output element, and a power-limiting element disposed between these input and output elements for transmitting optical light from these input elements to these output elements, these optical power-limiting elements comprising an optical-limiting solid mixture containing particles of at least one material that produces reversible thermal changes in response to light above a predetermined optical power level, thereby changing the optical transmission properties of these power-limiting elements. | ||||||
| 24 | GRATING LIKE OPTICAL LIMITER | EP08709743.2 | 2008-01-31 | EP2118695A2 | 2009-11-18 | ORON, Ram; DONVAL, Ariela; NEMET, Boaz; NEVO, Doron; ORON, Moshe |
| A reversible optical energy limiting device comprises a waveguide forming an optical path between an input end and an output end, and an optical energy responsive material located in the optical path for reflecting at least a portion of optical energy received from the input end back toward the input end when the optical energy exceeds a predetermined threshold. The optical energy responsive material does not reflect optical energy when it drops below the predetermined threshold, and thus propagation of optical energy from the input end to the output end is automatically resumed when the optical energy drops below the predetermined threshold. The optical energy responsive material may extend across the optical path an acute angle relative to the longitudinal axis of the optical path so that back-reflected light does not re-enter the optical system. | ||||||
| 25 | OPTICAL ENERGY SWITCHING DEVICE AND METHOD | EP03743961.9 | 2003-03-13 | EP1483612A2 | 2004-12-08 | DONVAL, Ariela; NEVO, Doron; ORON, Moshe; ORON, Ram |
| An optical power or energy-switching device (2) comprises an optical waveguide (4') having an input section (10) and output section (12), the two sections foiming a pair of opposed surfaces extending transversely through the axes of the waveguide sections. A thin, substantially transparent layer (14) of electrically conductive material disposed between the opposed surfaces forms a plasma when exposed to optical signals propagating within the optical waveguide with an optical power level above a predetermined threshold. The plasma damages the opposed surfaces sufficiently to render those surfaces substantially opaque to light propagating within the optical waveguide so as to prevent the transmission of such light. | ||||||
| 26 | TRANSPARENT DISPLAY WITH EYE PROTECTION | US15052154 | 2016-02-24 | US20170242244A1 | 2017-08-24 | Danny J. O'CONNELL; Daniel L. MCDAVITT; James S. PARKER; Sanjay TRIPATHI |
| A transparent display provides eye protection from lasers and other high intensity light sources. The transparent display allows users to view objects clearly through the display while also presenting text, graphics or video on the display surface. Simultaneously, the display assembly comprises a component that provides eye protection against high power radiation sources. The transparent display with eye protection provides both protection from high power light sources and an additional cockpit display surface for presentation of information including graphical images, symbology, video, text, and other data. | ||||||
| 27 | Broadband optical limiter based on nano-graphene and method of fabricating same | US12766309 | 2010-04-23 | US09529129B2 | 2016-12-27 | Wei Zhao; Boshan Zhao |
| The present invention in one aspect relates to a low-cost, nano-graphene based broadband optical limiter with limiting properties superior to current standards, carbon fullerenes (C60) solutions and carbon black suspensions. The broadband optical limiter includes a plurality of graphene nano-sheets, and a base material in which the plurality of graphene nano-sheets is distributed. The base material can be liquid or gel matrix. | ||||||
| 28 | Broadband graphene-based optical limiter for the protection of backside illuminated CMOS detectors | US14104472 | 2013-12-12 | US09397237B2 | 2016-07-19 | Michael Ushinsky; Mitchell Haeri |
| An optical device may include a sacrificial limiter filter including at least one layer of graphene disposed on a substrate. The at least one layer of graphene may be configured to absorb and scatter at least a portion of electromagnetic radiation incident on the at least one layer of graphene. | ||||||
| 29 | Reflective optical limiter | US14343922 | 2012-09-12 | US09223157B2 | 2015-12-29 | Ariela Donval; Yuval Ofir; Doron Nevo; Moshe Oron |
| An optical limiter comprises a glass backing, a glass cover, and a layer of a phase changing material placed between said glass backing and said glass cover, the phase changing material comprising a transparent matrix having embedded particles of material that changes its optical properties due to temperature induced phase change of said material. The optical properties may change from transparent to reflective, from transparent to refractive or from transparent to scattering. The phase changing material is preferably at least one material selected from the group consisting of the elements Antimony, Bismuth, Cadmium, Lead, Tin and Indium and low-melting-point alloys of two or more of these elements. Two or more layers of phase changing materials may be used in a stack configuration, with each of the phase changing materials having a unique melting temperature. | ||||||
| 30 | Photon detector with a paralyzable photon-sensitive element, in particular SPAD, and distance measuring device comprising said type of photon detector | US13395425 | 2010-07-15 | US09201138B2 | 2015-12-01 | Andreas Eisele; Oliver Wolst; Bernd Schmidtke |
| A photon detector is disclosed that includes, in addition to an immobilizable photon-sensitive element, a photon transmission element. The photon detector is configured such that it can vary photon intensities impacting upon the photon-sensitive element and transmitted by the photon transmission element, for example, by modifying an absorption property or a defocusing property of the photon transmission element. Also, the immobile photon-sensitive element, which can be, for example a SPAD (Single Photon Avalanche Diode), always operates close to the optimal operating range and below an immobilization range. A distancing device that includes this type of photo detector is also disclosed. | ||||||
| 31 | OPTICAL LIMITER, OPTICAL LOGIC CIRCUIT, COMPARATOR, DIGITAL CONVERTER, OPTICAL TRANSMISSION APPARATUS AND OPTICAL PROCESSING METHOD | US14561778 | 2014-12-05 | US20150168804A1 | 2015-06-18 | Futoshi IZUMI |
| An optical limiter includes a nonlinear medium that changes its own refractive index in accordance with an intensity of incident light, and outputs the incident light in a different direction depending on the refractive index, a first incident section by which reference light with a predetermined intensity and an optical signal with a modulated intensity is made incident on the nonlinear medium, a second incident section by which auxiliary light is made incident on a portion in the nonlinear medium through which the reference light and the optical signal pass, and an inverse output section that is provided at an incident position of the reference light outputted from the nonlinear medium when the optical signal is off, and outputs an optical signal obtained by inversion of the intensity of the incident light. | ||||||
| 32 | Wavelength-specific wide impinging angle limiter | US13468220 | 2012-05-10 | US08736992B2 | 2014-05-27 | Yuval Ofir; Ariela Donval; Moshe Oron; Doron Nevo |
| An impingement angle-independent wavelength-specific limiter includes a stack of wavelength-specific limiters configured to limit impinging light having a plurality of different wavelengths. The stack includes a plurality of wavelength-specific limiters. Each one of the plurality of wavelength-specific limiters is activated by a corresponding wavelength of the impinging light and is configured to limit the corresponding wavelength of the impinging light. | ||||||
| 33 | SACRIFICIAL LIMITER FILTER | US13563081 | 2012-07-31 | US20140036369A1 | 2014-02-06 | Michael Ushinsky; Mitchell Haeri |
| A sacrificial limiter filter may include a substrate and a metal nano-coating and/or a polymer/carbon allotrope coating. The sacrificial limited filter may transmit optical radiation having desired frequencies and/or intensities while blocking optical radiation having undesired frequencies and/or intensities. | ||||||
| 34 | DEVICE AND METHOD FOR REDUCING AMPLITUDE NOISE OF A LIGHT RADIATION | US13942569 | 2013-07-15 | US20140014811A1 | 2014-01-16 | Eckhard Zanger |
| The invention relates to a device for reducing amplitude noise of a light radiation, comprising a first birefringent crystal, which has a first length along a direction of light propagation as well as a first optical axis; a polarization device; a light sensitive element, arranged in such a way that at least a part of a beam of light radiating through the first crystal and the polarization device when the device is in operation strikes the light sensitive element; and a control appliance which stands in operative connection with the first crystal and which is provided and arranged for using a signal generated by the light sensitive element as input variable and for applying a voltage signal as output signal to the first crystal to compensate for the amplitude noise. For the temperature control of the first crystal a temperature control appliance is provided which stands in operative connection with the control appliance and which is provided and arranged for using the voltage signal of the control appliance as input variable and for setting the temperature of the first crystal depending on the input variable of the temperature control appliance. | ||||||
| 35 | Methods for optical restricting including a photorestrictor for producing and transferring photoexcitations(as amended) | US13018272 | 2011-01-31 | US08461504B1 | 2013-06-11 | Sergey V. Frolov; Michael Cyrus; Allan J. Bruce |
| Methods for optical restricting are described. An example of the invention relates to a method of restricting the brightness of a light source. The method can include: absorbing, in absorber material of a photo-restrictor, at least a portion of a primary emission produced by the light source; producing first photoexcitations in the absorber material characterized by a first excitation density; transferring the first photoexcitations from the absorber material to an emitter material of the photo-restrictor thereby producing second photoexcitations characterized by a second excitation density; and producing a secondary emission from the emitter material. | ||||||
| 36 | WAVELENGTH-SPECIFIC WIDE IMPINGING ANGLE LIMITER | US13468220 | 2012-05-10 | US20120287522A1 | 2012-11-15 | Yuval Ofir; Ariela Donval; Moshe Oron; Doron Nevo |
| An impingement angle-independent wavelength-specific limiter includes a stack of wavelength-specific limiters configured to limit impinging light having a plurality of different wavelengths. The stack includes a plurality of wavelength-specific limiters. Each one of the plurality of wavelength-specific limiters is activated by a corresponding wavelength of the impinging light and is configured to limit the corresponding wavelength of the impinging light. | ||||||
| 37 | Photon Detector with a Paralyzable Photon-Sensitive Element, in particular SPAD, and Distance Measuring Device Comprising said type of Photon Detector | US13395425 | 2010-07-15 | US20120261547A1 | 2012-10-18 | Andreas Eisele; Oliver Wolst; Bernd Schmidtke |
| A photon detector is disclosed that includes, in addition to an immobilisable photon-sensitive element, a photon transmission element. The photon detector is configured such that it can vary photon intensities impacting upon the photon-sensitive element and transmitted by the photon transmission element, for example, by modifying an absorption property or a defocussing property of the photon transmission element. Also, the immobile photon-sensitive element, which can be, for example a SPAD (Single Photon Avalanche Diode), always operates close to the optimal operating range and below an immobilisation range. A distancing device that includes this type of photo detector is also disclosed. | ||||||
| 38 | Passive optical limiter having nonlinear material | US12706930 | 2010-02-17 | US08228584B2 | 2012-07-24 | Gerard Berginc; Patrick Feneyrou; Pierre-Antoine Bouit; Olivier Maury; Marie-Chantal Andraud |
| The invention relates to a passive optical limiter having a nonlinear material capable of switching in a predetermined optical band from a transparent state to an opaque state as a function of the power of an incident laser beam. The nonlinear material is an organic dye which comprises molecules derived from 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene into which a nitrogen atom is inserted at the meso position, referred to as aza-bodipy molecules, and which have conjugated π chains functionalized so as to exhibit absorption for two photons around an incident beam wavelength lying between 1.45 μm and 1.6 μm. | ||||||
| 39 | Field generating nanoparticles doped in light valves | US12483934 | 2009-06-12 | US07889413B1 | 2011-02-15 | Gary Cook; Dean R. Evans |
| The present invention provides a method for automatically activating an optical light valve. The method includes providing a photorefractive cell having a birefringent medium which is doped with nanoparticles and transmitting light through the photorefractive cell to create an electric field in the photorefractive cell such that the alignment state of the birefringent medium and nanoparticles is changed to thereby reduce the intensity of the light being transmitted therethrough, wherein the intensity of light is reduces without an external power source. | ||||||
| 40 | OPTICAL SIGNAL PROCESSING DEVICE AND METHOD OF PROCESSING OPTICAL SIGNAL | US12639964 | 2009-12-16 | US20100220997A1 | 2010-09-02 | Fumio FUTAMI |
| An optical signal processing device for shaping a waveform of an optical signal, including: an intensity inversion wavelength converter configured to generate an intensity-modulated optical signal of a second wavelength obtained by inverting a signal intensity of an input intensity-modulated optical signal of a first wavelength; an optical coupler configured to multiplex the intensity-modulated optical signal of the first wavelength and the intensity-modulated optical signal of the second wavelength at a timing at which signal intensities of those signals become opposite; and an optical limiter configured to input coupled light output from the optical coupler, and suppress gain as power of the coupled light becomes higher. | ||||||
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