Patents by Inventor Daiyu Hayashi
Daiyu Hayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10501342Abstract: Methods and apparatus are provided for ultraviolet (UV) water purification, comprising UV-C LED modules having improved light extraction efficiency. UV-C LED dies (12) are solidly coupled to associated translucent output windows (14), such that light is transmitted directly from light-emitting surface(s) of the dies (12) to output window(s) (14) of the LED package—without propagation across interstitial air gaps. Gas-to-solid (and solid-to-gas) light transition boundaries are thus eliminated, significantly reducing the amount of light lost through inter-medium boundary reflection, and thereby increasing efficiency of light extraction.Type: GrantFiled: March 10, 2016Date of Patent: December 10, 2019Assignee: SIGNIFY HOLDING B.V.Inventors: Daiyu Hayashi, Jianghong Yu, Paul Dijkstra, Michiel Van Der Meer, Arie Jan Hovestad
-
Patent number: 10113954Abstract: The present invention relates to an absorption spectroscopy device, comprising a light cavity vessel (1) whose inner wall is at least partially coated with a light reflective layer (2), wherein said light reflective layer is a distributed Bragg reflector or is composed of stainless steel or aluminium; a photo-detector; and a light source, wherein said light source is capable of emitting light radiation which passes through said light cavity vessel, wherein said light cavity vessel is capable of reflecting the emitted radiation and wherein said photo-detector is capable of detecting at least a portion of the emitted light.Type: GrantFiled: December 11, 2014Date of Patent: October 30, 2018Assignee: Koninklijke Philips N.V.Inventors: Daiyu Hayashi, Achim Hilgers
-
Patent number: 9987499Abstract: The invention relates to an UV radiation device, comprising an LED comprising a nitridic material which is arranged to emit first UV radiation in a wavelength range of 200 nm-300 nm and a luminescent material doped with at least one of the following activators selected out of the group Eu2+, Ce3+, Pr3+, Nd3+, Gd3+, Tm3+, Sb3+, Tl+, Pb2+ and Bi3+, wherein the luminescent material is configured to convert at least a part of the primary UV radiation into secondary UV radiation, the primary UV radiation and the secondary UV radiation having a different spectral distribution.Type: GrantFiled: May 6, 2014Date of Patent: June 5, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Daiyu Hayashi, Jianghong Yu, Georg Greuel, Thomas Jüstel, Cornelis Reinder Reinder Ronda
-
Publication number: 20180086649Abstract: Abstract: Methods and apparatus are provided for ultraviolet (UV) water purification, comprising UV-C LED modules having improved light extraction efficiency. UV-C LED dies (12) are solidly coupled to associated translucent output windows (14), such that light is transmitted directly from light-emitting surface(s) of the dies (12) to output window(s) (14) of the LED package—without propagation across interstitial air gaps. Gas-to-solid (and solid-to-gas) light transition boundaries are thus eliminated, significantly reducing the amount of light lost through inter-medium boundary reflection, and thereby increasing efficiency of light extraction.Type: ApplicationFiled: March 10, 2016Publication date: March 29, 2018Applicant: PHILIPS LIGHTING HOLDING B.V.Inventors: Daiyu HAYASHI, Jianghong YU, Paul DIJKSTRA, Michiel VAN DER MEER, Arie Jan HOVESTAD
-
Publication number: 20160327475Abstract: The present invention relates to an absorption spectroscopy device, comprising a light cavity vessel (1) whose inner wall is at least partially coated with a light reflective layer (2), wherein said light reflective layer is a distributed Bragg reflector or is composed of stainless steel or aluminium; a photo-detector; and a light source, wherein said light source is capable of emitting light radiation which passes through said light cavity vessel, wherein said light cavity vessel is capable of reflecting the emitted radiation and wherein said photo-detector is capable of detecting at least a portion of the emitted light.Type: ApplicationFiled: December 11, 2014Publication date: November 10, 2016Inventors: DAIYU HAYASHI, ACHIM HILGERS
-
Publication number: 20160303394Abstract: The invention relates to an UV radiation device, comprising an LED comprising a nitridic material which is arranged to emit first UV radiation in a wavelength range of 200 nm-300 nm and a luminescent material doped with at least one of the following activators selected out of the group Eu2+, Ce3+, Pr3+, Nd3+, Gd3+, Tm3+, Sb3+, Tl+, Pb2+ and Bi3+, wherein the luminescent material is configured to convert at least a part of the primary UV radiation into secondary UV radiation, the primary UV radiation and the secondary UV radiation having a different spectral distribution.Type: ApplicationFiled: May 6, 2014Publication date: October 20, 2016Inventors: Daiyu HAYASHI, Jianghong YU, Georg GREUEL, Thomas JÜSTEL, Cornelis Reinder Reinder RONDA
-
DEVICE FOR SUBJECTING A FLUID TO A DISINFECTING TREATMENT BY EXPOSING THE FLUID TO ULTRAVIOLET LIGHT
Publication number: 20130119266Abstract: A device for subjecting a fluid to a disinfecting treatment by exposing the fluid to ultraviolet light comprises a reactor (10) having an inner space (11) in which means (20) for emitting ultraviolet light are arranged, an inlet (12) for letting fluid into the inner space (11), and an outlet for letting out fluid from the inner space (11). The light emission means (20) comprise a single electrode, wherein a wall (14) encompassing the inner space (11) is adapted to function as an electrode and comprises electrically conductive material, and wherein the device further comprises means (30) which also comprise electrically conductive material, and which are arranged for locally enhancing the electrical conductivity in a space between the reactor wall (14) and the light emission means (20).Type: ApplicationFiled: July 11, 2011Publication date: May 16, 2013Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Eva Mondt, Einte Holwerda, Daiyu Hayashi, Georg Greuel -
Publication number: 20110279065Abstract: The invention relates to a mercury-free molecular discharge lamp (30), which comprises: a light-transmitting discharge vessel (32) enclosing, in a gastight manner, a discharge space comprising a gas filling (34). The mercury-free molecular discharge lamp further comprises discharge means (36) for maintaining a discharge (38) in the discharge space, and discharge-variation means (40, 42) for varying, in operation, a position of the discharge within the gas filling relative to each other, and/or for varying a dimension of the discharge within the gas filling over time. An effect of the varying of the position and/or dimension of the discharge over time is that at a specific variation-speed or variation-frequency the output power and/or luminous flux of the mercury-free molecular discharge lamp is substantially increased. This effect is found to be depending on the gas filling and on the variation-speed and/or variation-frequency.Type: ApplicationFiled: January 7, 2010Publication date: November 17, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Rainer Hilbig, Achim Gerhard Rolf Koerber, Stefan Schwan, Daiyu Hayashi
-
Publication number: 20110148305Abstract: It is provided a dielectric barrier discharge lamp with a metal material in the gas discharge vessel. The metal material increases the efficacy of the lamp.Type: ApplicationFiled: August 14, 2009Publication date: June 23, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Daiyu Hayashi, Georg Greuel, Rainer Hilbig, Norbert Braun
-
Publication number: 20100328680Abstract: An optical sensor (600) for detecting the movement of an object relative to the position of the optical sensor (600), using self-mixing interference, is described. The optical sensor (600) comprises a laser (100), a detector (200) and a filter device (500). The filter device (500) suppresses measurement signals generated by means of the detector (200) when movements of the object at a velocity below a defined threshold value cause the measurement signals. The optical sensor (600) may be used in a switch in order to enable selective switching depending on the velocity of the movement of the object.Type: ApplicationFiled: February 3, 2009Publication date: December 30, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Holger Moench, Johannes Baier, Mark Carpaij, Rainer Hilbig, Johanna Sophie Kolb, Stefan Schwan, Alexander Marc Van Der Lee, Ulrich Weichmann, Daiyu Hayashi
-
Publication number: 20100301746Abstract: A gas discharge lamp (1) equipped with a gas discharge vessel (2) enclosing a gas filling, said gas filling comprising a chalcogen selected from the group of sulfur, selenium or tellurium or a compound thereof, and with means for igniting and maintaining a gas discharge, comprising an electrode assembly (6-9) disposed in the discharge vessel, the electron-emissive material (9) of the electrode assembly comprising iridium or an alloy of iridium, providing a long-lived, efficient, compact, and high intensity white light source for applications such as general and professional illumination.Type: ApplicationFiled: May 6, 2008Publication date: December 2, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Achim G.R. Koerber, Johannes Baier, Robert P. Scholl, Daiyu Hayashi, Stefan Schwan, Rainer Hilbig
-
Patent number: 7839068Abstract: The present invention relates to a fluorescent lamp including a visible radiation and/or UV-radiation transmissive discharge vessel, at least one luminescent layer coated onto the inner wall of the discharge vessel for converting UV-radiation to other wavelengths of UV-A, UV-B and/or visible radiation characterized in, that at a section to which no luminescent layer is applied on the inner surface area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel, and/or at least a section to which luminescent layer is applied on the inner surface area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel; whereby said substrate layer comprises at least one volatile organic material being releasable over an extended time period, whereby the volatile organic material is released by UV-radiation and/or thermal heat generated from said fluorescent lamp and, whereby at operation theType: GrantFiled: November 2, 2005Date of Patent: November 23, 2010Assignee: Koninklijke Philips Electronics, N.V.Inventors: Daiyu Hayashi, Michiel Jacobus Van Der Meer, Olaf Mastenbroek
-
Publication number: 20100117533Abstract: The invention relates to a discharge lamp comprising a group IVB monoxide radiation emitting material, which allows to greatly improve the features of the lamp due to the superior light emitting properties of the monoxide compound.Type: ApplicationFiled: April 9, 2008Publication date: May 13, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Achim Gerhard Rolf Koerber, Rainer Hilbig, Daiyu Hayashi, Stefan Schwan
-
Publication number: 20090051263Abstract: The present invention relates to a fluorescent lamp including a visible radiation and/or UV-radiation transmissive discharge vessel, at least one luminescent layer coated onto the inner wall of the discharge vessel for converting UV-radiation to other wavelengths of UV-A, UV-B and/or visible radiation characterized in, that at a section to which no luminescent layer is applied on the inner surface area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel, and/or at least a section to which luminescent layer is applied on the inner surface area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel; whereby said substrate layer comprises at least one volatile organic material being releasable over an extended time period, whereby the volatile organic material is released by UV-radiation and/or thermal heat generated from said fluorescent lamp and, whereby at operation theType: ApplicationFiled: November 2, 2005Publication date: February 26, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Daiyu Hayashi, Michiel Jacobus Van Der Meer, Olaf Mastenbroek