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).

  • Patent number: 11140762
    Abstract: 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: Grant
    Filed: April 12, 2019
    Date of Patent: October 5, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Tewe Hiepke Heemstra, Durandus Kornelius Dijken
  • Publication number: 20210243872
    Abstract: 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: Application
    Filed: April 12, 2019
    Publication date: August 5, 2021
    Inventors: TEWE HIEPKE HEEMSTRA, DURANDUS KORNELIUS DIJKEN
  • Patent number: 11035550
    Abstract: 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: Grant
    Filed: March 27, 2018
    Date of Patent: June 15, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventor: Tewe Hiepke Heemstra
  • Publication number: 20210108779
    Abstract: 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: Application
    Filed: March 27, 2018
    Publication date: April 15, 2021
    Inventor: TEWE HIEPKE HEEMSTRA
  • Patent number: 10867490
    Abstract: 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: Grant
    Filed: November 30, 2017
    Date of Patent: December 15, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventor: Tewe Hiepke Heemstra
  • Patent number: 10624186
    Abstract: 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: Grant
    Filed: September 21, 2017
    Date of Patent: April 14, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventor: Tewe Hiepke Heemstra
  • Patent number: 10591151
    Abstract: 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: Grant
    Filed: November 23, 2017
    Date of Patent: March 17, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Simon Eme Kadijk, Tewe Hiepke Heemstra, Vincent Stefan David Gielen, Edwin Petronella Helena Van Lier
  • Patent number: 10544919
    Abstract: 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: Grant
    Filed: September 19, 2017
    Date of Patent: January 28, 2020
    Assignee: SIGNIFY HOLDING B.V
    Inventor: Tewe Hiepke Heemstra
  • Publication number: 20190347913
    Abstract: 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: Application
    Filed: November 30, 2017
    Publication date: November 14, 2019
    Applicant: SIGNIFY HOLDING B.V.
    Inventor: TEWE HIEPKE HEEMSTRA
  • Publication number: 20190346125
    Abstract: 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: Application
    Filed: November 23, 2017
    Publication date: November 14, 2019
    Inventors: SIMON EME KADIJK, TEWE HIEPKE HEEMSTRA, VINCENT STEFAN DAVID GIELEN, EDWIN PETRONELLA HELENA VAN LIER
  • Publication number: 20190230767
    Abstract: 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: Application
    Filed: September 21, 2017
    Publication date: July 25, 2019
    Inventor: TEWE HIEPKE HEEMSTRA
  • Publication number: 20190203909
    Abstract: 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: Application
    Filed: September 19, 2017
    Publication date: July 4, 2019
    Inventor: TEWE HIEPKE HEEMSTRA
  • Patent number: 10222040
    Abstract: 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: Grant
    Filed: May 15, 2014
    Date of Patent: March 5, 2019
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Inge Johanna Tigchelaar, Tewe Hiepke Heemstra
  • Patent number: 9612001
    Abstract: 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: Grant
    Filed: November 13, 2014
    Date of Patent: April 4, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventor: Tewe Hiepke Heemstra
  • Publication number: 20160290572
    Abstract: 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: Application
    Filed: November 13, 2014
    Publication date: October 6, 2016
    Inventor: TEWE HIEPKE HEEMSTRA
  • Publication number: 20160097492
    Abstract: 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: Application
    Filed: May 15, 2014
    Publication date: April 7, 2016
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Inge Johanna TIGCHELAAR, Tewe Hiepke HEEMSTRA
  • Patent number: 6563645
    Abstract: 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: Grant
    Filed: June 25, 2001
    Date of Patent: May 13, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Tewe Hiepke Heemstra, Tiemen Poorter
  • Patent number: 6558860
    Abstract: 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: Grant
    Filed: October 26, 2001
    Date of Patent: May 6, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Tewe Hiepke Heemstra
  • Patent number: 6421187
    Abstract: 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: Grant
    Filed: September 13, 2001
    Date of Patent: July 16, 2002
    Assignee: Koninklijke Philips Electronics N. V.
    Inventors: Tewe Hiepke Heemstra, Geert Jan Van Der Meer
  • Publication number: 20020090559
    Abstract: 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: Application
    Filed: October 26, 2001
    Publication date: July 11, 2002
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Tewe Hiepke Heemstra