Patents by Inventor Sait Izmit
Sait Izmit 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: 10172202Abstract: A circuit arrangement for controlling the brightness of at least one LED unit is described by the disclosure. The circuit arrangement, in one example, includes an input for receiving a phase-cut operating voltage from a power supply, a signal processor, connected with the input and adapted to provide a dimming signal for the at least one LED unit from the operating voltage. To allow an efficient reduction of noise in the dimming signal but simultaneously to allow an improved dimming of the LED unit, the signal processor are configured to operate at least in a noise suppression mode and a dimming mode. A control device is provided, connected with the signal processor and configured to set the mode of the signal processor in dependence of the variation in the operating voltage.Type: GrantFiled: August 29, 2012Date of Patent: January 1, 2019Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Dennis Johannes Antonius Claessens, Jascha Van Pommeren, Jan Wojciech Obrebski, Yi Wang, Philip Louis Zulma Vael, Sait Izmit
-
Patent number: 10070488Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: GrantFiled: March 22, 2017Date of Patent: September 4, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Kumar Arulandu, Georg Sauerlander, Sait Izmit, Dennis Johannes Antonius Claessens, Philip Louis Zulma Vael, Yi Wang, Dalibor Cvoric, Ronald Hans Van Der Voort, Patrick Alouisius Martina De Bruycker, Robertus Leonardus Tousain
-
Patent number: 9890942Abstract: A lamp comprising a driver assembly, the driver assembly including a driver board with driver electronics, at least one point light source and a heat sink, the heat sink including a top side and a bottom side, a central space extending from the bottom side to the top side and adapted for receiving the driver board of the driver assembly, a zone provided at the top side and adapted for receiving the at least one point light source, wherein a plurality of fins adapted for dissipating heat are extending on opposite sides of the central space, and an extension of the central space in at least one radial direction of the heat sink is larger than an extension of the zone in the radial direction of the heat sink such that the central space is provided with at least one section arranged offset from and radially adjacent to the zone.Type: GrantFiled: September 17, 2013Date of Patent: February 13, 2018Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Lihua Lin, Aldo Tralli, Theodoor Cornelis Treurniet, Aldegonda Lucia Weijers, Martijn Evert Paul Jansen, Sait Izmit
-
Publication number: 20170196059Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: ApplicationFiled: March 22, 2017Publication date: July 6, 2017Inventors: KUMAR ARULANDU, GEORG SAUERLANDER, SAIT IZMIT, DENNIS JOHANNES ANTONIUS CLAESSENS, PHILIP LOUIS ZULMA VAEL, YI WANG, DALIBOR CVORIC, RONALD HANS VAN DER VOORT, PATRICK ALOUISIUS MARTINA DE BRUYCKER, ROBERTUS LEONARDUS TOUSAIN
-
Patent number: 9629208Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: GrantFiled: November 4, 2013Date of Patent: April 18, 2017Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Kumar Arulandu, Georg Sauerländer, Sait Izmit, Dennis Claessens, Philip Louis Zulma Vael, Yi Wang, Dalibor Cvoric, Ronald Hans Van Der Voort, Patrick Alouisius Martina De Bruycker, Robertus Leonardus Tousain
-
Patent number: 9450481Abstract: Circuits (1) for receiving output signals from transformers (2) comprise filters (11) and switches (12). In the case of magnetic/electronic transformers, the filters (11) are activated/deactivated, for example for filtering/not filtering unwanted signals coming from converters (4). The filters (11) may comprise capacitors. The switches (12) may comprise fuses. Output signals of magnetic/electronic transformers comprise relatively low/high frequency signals that result in relatively small/large currents flowing through the capacitors, which currents will not blow/blow the fuses. The capacitors, when activated, form, together with leakage inductances of the magnetic transformers, electromagnetic interference filters. Alternatively, the circuits (1) may further comprise detectors (13) for detecting transformer types and for controlling the switches (12) in response to detection results.Type: GrantFiled: June 17, 2013Date of Patent: September 20, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Dennis Johannes Antonius Claessens, Philip Louis Zulma Vael, Patrick Alouisius Martina De Bruycker, Yi Wang, Sait Izmit
-
Publication number: 20160044756Abstract: A circuit arrangement (3, 3?) for controlling the brightness of at least one LED unit (2) is provided, comprising an input (8) for receiving a phase-cut operating voltage from a power supply (4), a signal processor (14, 14?), connected with said input (8) and adapted to provide a dimming signal (12) for said at least one LED unit (2) from said operating voltage. To allow an efficient reduction of noise in the dimming signal (12) but simultaneously to allow an improved dimming of said LED unit (2), said signal processor (14, 14?) is being configured to operate at least in a noise suppression mode (30) and a dimming mode (31). A control device (15, 15?) is provided, connected with said signal processor (14, 14?) and configured to set the mode of said signal processor (14, 14?) in dependence of the variation in said operating voltage.Type: ApplicationFiled: August 29, 2012Publication date: February 11, 2016Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Dennis Johannes Antonius CLAESSENS, Jascha VAN POMMEREN, Jan Wojciech OBREBSKI, Yi WANG, Philip Louis Zulma VAEL, Sait IZMIT
-
Publication number: 20160010829Abstract: The present invention relates to an optical arrangement (1) having an optical axis (X) and comprising a base member (70), a cup shaped reflector (10) having an inner surface (12) facing towards the optical axis, at least one solid state light source (40, 42) arranged at the optical axis on the base member, and a lens comprising a center lens portion (20) and an annular lens portion (30), and arranged in front of the at least one solid state light source in a light exit direction. The center lens portion has a dome shaped outer surface (22) and the annular lens portion has an outer surface (32) with a convex shape facing the inner surface of the reflector. The reflector and the lens are formed together as one solid piece of material.Type: ApplicationFiled: March 6, 2014Publication date: January 14, 2016Inventors: Vincent Stefan David GIELEN, Sait IZMIT, Ferry ZIJP, Oliver DROSS, Peter Adrianus Albert KEMPS, Olena IVANOVA
-
Publication number: 20150305104Abstract: Control circuits (1) bring power converters (4) in different modes in response to detection results. The power converters (4) exchange possibly rectified first voltage/current signals with electronic halogen transformers (2) and supply second voltage/current signals to light emitting diode circuits (5). The first current signals have, in different modes, different amplitudes. The different amplitudes have different constant values and/or different derivative values. As a result, the first current signal has become a relatively varying first current signal. Then, the halogen transformers (2) no longer experience problems that occur when smaller amounts of power need to be provided than designed to. The detections may comprise polarity detections of and/or zero-crossing detections in the first voltage signals. The halogen transformers (2) comprise self-oscillating switched mode power supplies designed to provide first amounts of power at their outputs.Type: ApplicationFiled: November 4, 2013Publication date: October 22, 2015Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Kumar ARULANDU, Georg SAUERLĂ„NDER, Sait IZMIT, DENNIS CLAESSENS, Philip Louis Zulma VAEL, Yi WANG, Dalibor CVORIC, Ronald Hans VAN DER VOORT, Patrick Alouisius Martina DE BRUYCKER, Robertus Leonardus TOUSAIN
-
Publication number: 20150233568Abstract: A lamp comprising a driver assembly (1), said driver assembly comprising a driver board (11) with driver electronics, at least one point light source (31) and a heat sink (2), the heat sink comprising a top side (25) and a bottom side (24), a central space (20) extending from said bottom side to said top side and adapted for receiving said driver board of said driver assembly, a zone (23) provided at said top side and adapted for receiving said at least one point light source (31), wherein a plurality of fins (21) adapted for dissipating heat are extending on opposite sides of said central space, and an extension of said central space in at least one radial direction (y) of said heat sink is larger than an extension of said zone in said radial direction (y) of said heat sink such that said central space is provided with at least one section (22a, 22b) arranged offset from and radially adjacent to said zone.Type: ApplicationFiled: September 17, 2013Publication date: August 20, 2015Inventors: Lihua Lin, Aldo Tralli, Theodoor Cornelis Treurniet, Aldegonda Lucia Weijers, Martijn Evert Paul Jansen, Sait Izmit
-
Publication number: 20150200585Abstract: Circuits (1) for receiving output signals from transformers (2) comprise filters (11) and switches (12). In the case of magnetic/electronic transformers, the filters (11) are activated/deactivated, for example for filtering/not filtering unwanted signals coming from converters (4). The filters (11) may comprise capacitors. The switches (12) may comprise fuses. Output signals of magnetic/electronic transformers comprise relatively low/high frequency signals that result in relatively small/large currents flowing through the capacitors, which currents will not blow/blow the fuses. The capacitors, when activated, form, together with leakage inductances of the magnetic transformers, electromagnetic interference filters. Alternatively, the circuits (1) may further comprise detectors (13) for detecting transformer types and for controlling the switches (12) in response to detection results.Type: ApplicationFiled: June 17, 2013Publication date: July 16, 2015Inventors: Dennis Johannes Antonius Claessens, Philip Louis Zulma Vael, Patrick Alouisius Martina De Bruycker, Yi Wang, Sait Izmit
-
Patent number: 8870815Abstract: A steering system (30) comprises two radially oppositely arranged drive wheels (1; 3) for steering a tubular object (5) positioned between the drive wheels (1; 3). The drive wheels (1; 3) each have a wheel rotation axis (40; 42) and each include a plurality of rollers (7) distributed around the wheel rotation axis (40; 42). The rollers (7) are rotatably arranged, each roller having a roller rotation axis (44) and an outer drive face (58) concavely vaulted in a direction corresponding to its roller rotation axis (44). The roller rotation axis (44) is obliquely oriented in relation to the wheel rotation axis (40; 42) and the rollers (7) of each drive wheel (1; 3) form together a steering periphery for the tubular object (5). The steering system enables continues rotation of a tubular object without danger that the object will lose the contact with the rollers. The steering system (30) may be incorporated in a catheter system which comprises a catheter (5).Type: GrantFiled: November 8, 2010Date of Patent: October 28, 2014Assignee: Koninklijke Philips N.V.Inventors: Ravindra Bhat, Dennis Erwin Bos, Antonius Maria Rijken, Michel Gerardus Pardoel, Sait Izmit
-
Publication number: 20120232476Abstract: A steering system (30) comprises two radially oppositely arranged drive wheels (1; 3) for steering a tubular object (5) positioned between the drive wheels (1; 3). The drive wheels (1; 3) each have a wheel rotation axis (40; 42) and each include a plurality of rollers (7) distributed around the wheel rotation axis (40; 42). The rollers (7) are rotatably arranged, each roller having a roller rotation axis (44) and an outer drive face (58) concavely vaulted in a direction corresponding to its roller rotation axis (44). The roller rotation axis (44) is obliquely oriented in relation to the wheel rotation axis (40; 42) and the rollers (7) of each drive wheel (1; 3) form together a steering periphery for the tubular object (5). The steering system enables continues rotation of a tubular object without danger that the object will lose the contact with the rollers. The steering system (30) may be incorporated in a catheter system which comprises a catheter (5).Type: ApplicationFiled: November 8, 2010Publication date: September 13, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Ravindra Bhat, Dennis Erwin Bos, Antonius Maria Rijken, Michel Gerardus Pardoel, Sait Izmit