Patents by Inventor Tewe Hiepke Heemstra
Tewe Hiepke Heemstra 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).
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Publication number: 20230389162Abstract: A mechanism for detecting user presence. A computing system generates a sound wave having a predetermined pattern responsive to the existence of user activity with the computing system, the predetermined pattern being located in an inaudible part of the sound wave and/or being formed of an imperceptible audio watermark. A user presence sensor receives the sound wave and detects the presence or existence of the predetermined pattern. An output signal, responsive to this detection, is output to a light control system which controls the operation of one or more lighting units responsive to the output signal. The operation of one or more lighting units is thereby responsive to a user interaction with a computing system.Type: ApplicationFiled: October 15, 2021Publication date: November 30, 2023Inventor: TEWE HIEPKE HEEMSTRA
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Patent number: 11140762Abstract: A method 600 of selecting a lighting device from a plurality of lighting devices 120, 122, 124 in a physical space 160 is disclosed.Type: GrantFiled: April 12, 2019Date of Patent: October 5, 2021Assignee: SIGNIFY HOLDING B.V.Inventors: Tewe Hiepke Heemstra, Durandus Kornelius Dijken
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Publication number: 20210243872Abstract: A method 600 of selecting a lighting device from a plurality of lighting devices 120, 122, 124 in a physical space 160 is disclosed.Type: ApplicationFiled: April 12, 2019Publication date: August 5, 2021Inventors: TEWE HIEPKE HEEMSTRA, DURANDUS KORNELIUS DIJKEN
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Patent number: 11035550Abstract: The invention provides a lens comprising a plurality of imaging regions, each adapted to image a light source to generate a plurality of virtual light sources common to all imaging regions and distributed along a spatial path extending in a direction generally away from the lens. Each imaging region comprises a plurality of sub-regions for focussing the input light source to a corresponding plurality of focal points common to the imaging regions. The focussed light directed to the focal points sub-regions of each imaging region combines so as to form at each focal point a virtual light source. An optical deglaring plate comprising an array of conical optical structures is used with the lens.Type: GrantFiled: March 27, 2018Date of Patent: June 15, 2021Assignee: SIGNIFY HOLDING B.V.Inventor: Tewe Hiepke Heemstra
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Publication number: 20210108779Abstract: The invention provides a lens comprising a plurality of imaging regions, each adapted to image a light source to generate a plurality of virtual light sources common to all imaging regions and distributed along a spatial path extending in a direction generally away from the lens. Each imaging region comprises a plurality of sub-regions for focusing the input light source to a corresponding plurality of focal points common to the imaging regions. The focused light directed to the focal points sub-regions of each imaging region combines so as to form at each focal point a virtual light source. An optical deglaring plate comprising an array of conical optical structures is used with the lens.Type: ApplicationFiled: March 27, 2018Publication date: April 15, 2021Inventor: TEWE HIEPKE HEEMSTRA
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Patent number: 10867490Abstract: The invention provides a first object (100) for theft detection of a second object (200), the second object (200) being in pair with a third object (300) for securing the second object (200), the first object (100) comprising: a detector (101) for detecting a second signal (201) of the second object (200) and a third signal (301) of the third object (300) when transmitted within a detection area (103) of the detector (101), and providing a detector output (104); a controller (102) for identifying, by processing the detector output (104), a condition (105) indicating both (i) a pairing of the second signal (201) and the third signal (301), and (ii) the second signal (201) moving out of the detection area (103) while the third signal (301) is not being detected within the detection area (103), and performing a theft detection action (106) when the condition (105) is identified.Type: GrantFiled: November 30, 2017Date of Patent: December 15, 2020Assignee: SIGNIFY HOLDING B.V.Inventor: Tewe Hiepke Heemstra
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Patent number: 10624186Abstract: A lighting device comprises an optical deglaring plate and a lighting assembly arranged in optical communication with the plate and comprising a plurality of light sources for projecting a plurality of luminous outputs onto an incident surface of the deglaring plate. The projected luminous outputs together generate a luminous pattern on the incident surface of the plate. The optical deglaring plate comprises an array of conical optical structures for optically processing the generated luminous pattern in order thereby to produce a corresponding lighting display on a reverse side of the plate. A controller is provided to control a configuration of the lighting assembly so as to vary the generated luminous pattern in dependence upon one or more variables, and thereby correspondingly vary the produced visible lighting display. The variables may, in particular examples, include a time variable and/or may include a tracked position of an observer relative to the device.Type: GrantFiled: September 21, 2017Date of Patent: April 14, 2020Assignee: SIGNIFY HOLDING B.V.Inventor: Tewe Hiepke Heemstra
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Patent number: 10591151Abstract: A light emitting device (1) comprising a luminescent element (2) comprising a first surface (21), at least one cooling element (3) arranged at the first surface of the luminescent element, and a plurality of spacer elements (5) arranged between the cooling element (3) and the first surface (21) of the luminescent element such that the cooling element is arranged spaced apart from the first surface of the luminescent element with a distance, d. The at least one cooling element (3) comprises a compliance such as to be adapted for following warpage of the luminescent element (2) induced by any one or more of clamping forces, forces inflicted by production processes and light and/or heat propagating within the luminescent element, and a force (F) is applied to force the at least one cooling element (3) and the luminescent element (2) together in such a way that no part of the at least one cooling element and the luminescent element are in direct mutual contact.Type: GrantFiled: November 23, 2017Date of Patent: March 17, 2020Assignee: SIGNIFY HOLDING B.V.Inventors: Simon Eme Kadijk, Tewe Hiepke Heemstra, Vincent Stefan David Gielen, Edwin Petronella Helena Van Lier
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Patent number: 10544919Abstract: An optical arrangement for illuminating a region within a space comprises a reflector array and lens array having adjustable relative displacement. Each lens of the lens array is arranged to receive light from a first location within the space and to direct it onto one of the reflectors of the reflector array. Each lens is further configured to receive light reflected back from the reflector array and redirect it toward a second location within the space. By adjusting the relative displacement between the two arrays, the position of the second location can be configured.Type: GrantFiled: September 19, 2017Date of Patent: January 28, 2020Assignee: SIGNIFY HOLDING B.VInventor: Tewe Hiepke Heemstra
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Publication number: 20190346125Abstract: A light emitting device (1) comprising a luminescent element (2) comprising a first surface (21), at least one cooling element (3) arranged at the first surface of the luminescent element, and a plurality of spacer elements (5) arranged between the cooling element (3) and the first surface (21) of the luminescent element such that the cooling element is arranged spaced apart from the first surface of the luminescent element with a distance, d. The at least one cooling element (3) comprises a compliance such as to be adapted for following warpage of the luminescent element (2) induced by any one or more of clamping forces, forces inflicted by production processes and light and/or heat propagating within the luminescent element, and a force (F) is applied to force the at least one cooling element (3) and the luminescent element (2) together in such a way that no part of the at least one cooling element and the luminescent element are in direct mutual contact.Type: ApplicationFiled: November 23, 2017Publication date: November 14, 2019Inventors: SIMON EME KADIJK, TEWE HIEPKE HEEMSTRA, VINCENT STEFAN DAVID GIELEN, EDWIN PETRONELLA HELENA VAN LIER
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Publication number: 20190347913Abstract: The invention provides a first object (100) for theft detection of a second object (200), the second object (200) being in pair with a third object (300) for securing the second object (200), the first object (100) comprising: a detector (101) for detecting a second signal (201) of the second object (200) and a third signal (301) of the third object (300) when transmitted within a detection area (103) of the detector (101), and providing a detector output (104); a controller (102) for identifying, by processing the detector output (104), a condition (105) indicating both (i) a pairing of the second signal (201) and the third signal (301), and (ii) the second signal (201) moving out of the detection area (103) while the third signal (301) is not being detected within the detection area (103), and performing a theft detection action (106) when the condition (105) is identified.Type: ApplicationFiled: November 30, 2017Publication date: November 14, 2019Applicant: SIGNIFY HOLDING B.V.Inventor: TEWE HIEPKE HEEMSTRA
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Publication number: 20190230767Abstract: A lighting device comprises an optical deglaring plate and a lighting assembly arranged in optical communication with the plate and comprising a plurality of light sources for projecting a plurality of luminous outputs onto an incident surface of the deglaring plate. The projected luminous outputs together generate a luminous pattern on the incident surface of the plate. The optical deglaring plate comprises an array of conical optical structures for optically processing the generated luminous pattern in order thereby to produce a corresponding lighting display on a reverse side of the plate. A controller is provided to control a configuration of the lighting assembly so as to vary the generated luminous pattern in dependence upon one or more variables, and thereby correspondingly vary the produced visible lighting display. The variables may, in particular examples, include a time variable and/or may include a tracked position of an observer relative to the device.Type: ApplicationFiled: September 21, 2017Publication date: July 25, 2019Inventor: TEWE HIEPKE HEEMSTRA
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Publication number: 20190203909Abstract: An optical arrangement for illuminating a region within a space comprises a reflector array and lens array having adjustable relative displacement. Each lens of the lens array is arranged to receive light from a first location within the space and to direct it onto one of the reflectors of the reflector array. Each lens is further configured to receive light reflected back from the reflector array and redirect it toward a second location within the space. By adjusting the relative displacement between the two arrays, the position of the second location can be configured.Type: ApplicationFiled: September 19, 2017Publication date: July 4, 2019Inventor: TEWE HIEPKE HEEMSTRA
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Patent number: 10222040Abstract: A lighting device assembly comprising an elongate base member (3) having a wall portion (9) on which several light emitting diodes (11) are mounted along the length of the base member, and an end cap (15) including an electrical terminal (17) at each respective end of the base member. The lighting device assembly further has an elongate light transmissive optical member (5) configured to be assembled with the base member, thereby enclosing the light emitting diodes. The base member is provided with at least one switch (55) configured to close an electric circuit connecting the light emitting diodes with the electrical terminals. The optical member is provided with at least one switching portion (59), configured to close said at least one switch in conjunction with the assembly of the base member and the optical member, said at least one switch being opened when the base member and the optical member are disassembled.Type: GrantFiled: May 15, 2014Date of Patent: March 5, 2019Assignee: PHILIPS LIGHTING HOLDING B.V.Inventors: Inge Johanna Tigchelaar, Tewe Hiepke Heemstra
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Patent number: 9612001Abstract: A lighting arrangement (1) is disclosed. The lighting arrangement (1) comprises at least two light sources (2) which are arranged in a pattern along a longitudinal axis (L) and adapted to emit light in a first wavelength range. The lighting arrangement (1) also comprises a wavelength converting layer (5) arranged at a distance from the at least two light sources (2). The wavelength converting layer (5) is arranged to receive light emitted from the at least two light sources (2) and adapted to convert light in the first wavelength range to light in a second wavelength range. A spectrally selective layer (6) is arranged between the at least two light sources (2) and the wavelength converting layer (5). The spectrally selective layer (6) is adapted to reflect light in the first wavelength range having an angle of incidence smaller than a predefined angle and to transmit light in the first wavelength range having an angle of incidence larger than a predefined angle.Type: GrantFiled: November 13, 2014Date of Patent: April 4, 2017Assignee: PHILIPS LIGHTING HOLDING B.V.Inventor: Tewe Hiepke Heemstra
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Publication number: 20160290572Abstract: A lighting arrangement (1) is disclosed. The lighting arrangement (1) comprises at least two light sources (2) which are arranged in a pattern along a longitudinal axis (L) and adapted to emit light in a first wavelength range. The lighting arrangement (1) also comprises a wavelength converting layer (5) arranged at a distance from the at least two light sources (2). The wavelength converting layer (5) is arranged to receive light emitted from the at least two light sources (2) and adapted to convert light in the first wavelength range to light in a second wavelength range. A spectrally selective layer (6) is arranged between the at least two light sources (2) and the wavelength converting layer (5). The spectrally selective layer (6) is adapted to reflect light in the first wavelength range having an angle of incidence smaller than a predefined angle and to transmit light in the first wavelength range having an angle of incidence larger than a predefined angle.Type: ApplicationFiled: November 13, 2014Publication date: October 6, 2016Inventor: TEWE HIEPKE HEEMSTRA
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Publication number: 20160097492Abstract: A lighting device assembly comprising an elongate base member (3) having a wall portion (9) on which several light emitting diodes (11) are mounted along the length of the base member, and an end cap (15) including an electrical terminal (17) at each respective end of the base member. The lighting device assembly further has an elongate light transmissive optical member (5) configured to be assembled with the base member, thereby enclosing the light emitting diodes. The base member is provided with at least one switch (55) configured to close an electric circuit connecting the light emitting diodes with the electrical terminals. The optical member is provided with at least one switching portion (59), configured to close said at least one switch in conjunction with the assembly of the base member and the optical member, said at least one switch being opened when the base member and the optical member are disassembled.Type: ApplicationFiled: May 15, 2014Publication date: April 7, 2016Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Inge Johanna TIGCHELAAR, Tewe Hiepke HEEMSTRA
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Patent number: 6563645Abstract: In the manufacturing process of color display tubes with a dotted screen pattern, to form the screen (11), a segmented lens (3) is used for exposing the display window (4) in order to apply a structure of a black matrix layer and a layer with electroluminescent material to it. Principally, a segmented lens (3) gives rise to a phenomenon that is called facet marking; this is a result of the fact that the images of consecutive facets (12) of the lens on the screen (11) are disjunct or partly overlap, giving dark lines (42) or bright lines (44). In present day color display tubes—especially for use as computer monitors—it is getting more and more important to reduce facet marking as far as possible. It is proposed to manufacture the segmented lens (3) according to a new process in which the mold (30) for the manufacture of said segmented lens is significantly changed.Type: GrantFiled: June 25, 2001Date of Patent: May 13, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Tewe Hiepke Heemstra, Tiemen Poorter
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Patent number: 6558860Abstract: The invention relates to a method of producing a screen (6) having a striped structure of electroluminescent material on a display window (3) of a color display tube (1). In present day color display tubes (1), this screen (6) is produced using a photochemical process for exposing a photosensitive material which is applied to the display window (3). Normally, the exposure device used for this process comprises two lenses, a first lens (28) for correcting the rotation of the image of the elongated light source (22) and a second lens (27) for taking care that the landing position of the light on the display window (3) will be representative of the landing position of the electron beams (7), (8), (9) in the color display tube (1) when it is operated. Unfortunately, the prior art system has the disadvantage that the line-growth factor is not constant over the entire screen (6).Type: GrantFiled: October 26, 2001Date of Patent: May 6, 2003Assignee: Koninklijke Philips Electronics N.V.Inventor: Tewe Hiepke Heemstra
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Patent number: 6421187Abstract: A photosensitive layer of or for a cathode ray tube is illuminated by means of a laser illumination arrangement. The laser illumination arrangement comprises a homogenizer which serves to reduce the coherence of the laser beam.Type: GrantFiled: September 13, 2001Date of Patent: July 16, 2002Assignee: Koninklijke Philips Electronics N. V.Inventors: Tewe Hiepke Heemstra, Geert Jan Van Der Meer