Patents by Inventor Rifat Ata Mustafa

Rifat Ata Mustafa 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).

  • Publication number: 20210325021
    Abstract: Starting sheet material (1) adapted for forming a reflector (2) for a lighting device (40), the starting sheet material (1) comprising a flat reflective sheet material (14) shaped as a sector of an annulus bendable into a parabolic reflector or a truncated cone reflector, the flat reflective sheet material (1) comprising a first surface (3), a second surface (4), a first edge (5) shaped as a segment of a circle with a first radius and a second edge (6) shaped as a segment of a circle with a second radius, the second radius being smaller than the first radius, a third edge (7) and a fourth edge (8), the third edge (7) and the fourth edge (8) extending between said first edge (5) and said second edge (6), wherein optical structures (9) are provided on at least a part of one of the first surface (3) and the second surface (4), said optical structures (9) enabling collimation and beam shaping of incident light, said optical structures (9) being applied to the flat reflective sheet material (14) along a direction
    Type: Application
    Filed: August 19, 2019
    Publication date: October 21, 2021
    Inventors: RIFAT ATA MUSTAFA HIKMET, TIES VAN BOMMEL, JOHANNES PETRUS MARIA ANSEMS
  • Patent number: 11143386
    Abstract: The invention provides a collimator device for a lighting application which comprises a collimator panel having a first end face which receives input light and a second end face which provides collimated light. The second end face is opposite to the first end face. The collimator panel comprises a plurality of walls which extend between the first end face and the second end face to obtain a grid of cells. The cells extend between the first end face and the second end face to obtain the collimated light. At least the plurality of the walls are arranged to obtain cross-sections of the associated cells which form an auxetic structure. The collimator panel is deformable from a first structure into a second structure by changing the cross-section of the associated cells to change the collimated light from a first spatial distribution into collimated light having a second spatial distribution. The first spatial distribution is different from the second spatial distribution.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: October 12, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet
  • Publication number: 20210310617
    Abstract: There is provided a light emitting diode, LED, filament lamp (100) which provides LED filament lamp light (101). The LED filament lamp comprises at least one LED filament (102), at least one further LED (105), an at least partly transmissive envelope (107), and an optical element (108). The at least one LED filament (102) comprises a carrier (103) which has an elongated body and a plurality of LEDs (104) mechanically coupled to the carrier (103). The at least one LED filament (102) is configured to emit LED filament light (104?). The LED filament light (104?) has a first spectral distribution S1 with a first color point x1,y1 and a first correlated color temperature T1. The at least one further LED (105) is configured to emit further LED light (106) which has a second spectral distribution S2 with a second color point x2,y2. The at least one LED filament (102) and the at least one further LED (105) are at least partly enclosed by the at least partly transmissive envelope (107).
    Type: Application
    Filed: July 9, 2019
    Publication date: October 7, 2021
    Inventors: TIES VAN BOMMEL, RIFAT ATA MUSTAFA HIKMET, ROBERT JACOB PET
  • Patent number: 11112085
    Abstract: A housing (10) for a lighting device is disclosed. The housing comprises an elongate base region (21) and opposing elongate sidewalls (23) extending from opposite elongate sides of the elongate base region towards respective terminal ends (24), wherein each of the opposing elongate sidewalls (23) has an optically transmissive inner surface (11) separated from an outer surface (13) by a distance of 5 millimeters or less to form a cavity (15) for housing a reflective foil or a thermally conductive member. The inner surface (11) extends across the elongate base region (21), and it comprises a recess (25) in the elongate base region (21) for housing a light engine (31). Also disclosed is a luminaire (1) including such a housing (10) and a method of manufacturing such an optically transmissive housing (10).
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: September 7, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Rifat Ata Mustafa Hikmet, Bert Wouters, Paulus Albertus Van Hal, Johannes Petrus Maria Ansems
  • Patent number: 11085602
    Abstract: A light emitting diode, LED, filament lamp (100), comprising at least one filament (120, 120a, 120b) extending over a length, L, along a longitudinal axis, A, wherein the LED filament comprises an array of a plurality of LEDs (140) extending along the longitudinal axis, and an encapsulant (145) at least partially enclosing the plurality of LEDs, wherein the encapsulant comprises a luminescent material (150), and wherein at least one of the thickness, TL, of the encapsulant along a transverse axis, B, perpendicular to the longitudinal axis, and the concentration, CL, of the luminescent material in the encapsulant, varies over at least a portion of the length, L, of the at least one filament along the longitudinal axis, whereby the color temperature, CTL, of the light emitted from the at least one LED filament varies over the length of the at least one LED filament at least along the portion thereof.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: August 10, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet, Robert Jacob Pet
  • Publication number: 20210231301
    Abstract: The invention provides a method for 3D printing a heat sink (100) by means of fused deposition modelling, the method comprising layer-wise depositing a 3D printable material to provide a plurality of layers (322) of a 3D printed material (202) whereby a heat receiving face (101) of the heat sink (100) is created, the plurality of layers (322) of 3D printed material (202) being configured parallel to planes (325) perpendicular to the heat receiving face (101), wherein the 3D printable material comprises particles embedded in the 3D printable material, wherein the particles have an anisotropic thermal conductivity, wherein the particles are available in the 3D printable material in an amount selected from the range of 5-40 vol. % relative to the total volume of the 3D printable material, and wherein the layers (322) of 3D printed material (202) have layer heights (H) selected from the range of at maximum 800 ?m.
    Type: Application
    Filed: May 15, 2019
    Publication date: July 29, 2021
    Inventors: Rifat Ata Mustafa HIKMET, Patrick ZUIDEMA, Paulus Albertus VAN HAL
  • Patent number: 11072110
    Abstract: A method for 3D printing an object with at least one wall (2) having a first surface and a second, opposite surface, wherein the first surface is intended to serve as an optical functional surface, wherein the wall is formed by printing one track (16) on top of another track (17). An orientation of the object during printing is selected such that the wall has a tangent (or tangent surface) non-parallel to the z-axis, such that the first surface faces away from the x-y plane and the second surface faces the x-y plane. According to the invention, the 3D object is thus oriented during printing such that the first surface, intended to be used as an optical functional surface, faces away from the x-y plane, i.e. typically away from the support or platform on which the 3D object is printed upon. By ensuring this orientation during printing, the first surface becomes smoother than the second, opposite surface of the wall.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: July 27, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Rifat Ata Mustafa Hikmet, Coen Theodorus Hubertus Fransiscus Liedenbaum
  • Patent number: 11067229
    Abstract: Disclosed is a LED strip for providing indirect light emission. The LED strip comprises a plurality of LEDs arranged on an upper surface, wherein the LED strip has an unfolded state and a folded state, the LED strip being substantially planar in the unfolded state. The LED strip comprises a first side and a second side opposite to the first side, the first and second side being parallel to a central longitudinal axis in the unfolded state. The LED strip in the folded state has a plurality of first loops comprising at least one opening and being provided with at least one of the plurality of LEDs, which is configured to emit light towards a reflective interior surface of the loop, whereby at least a portion of the light reflected from the reflective interior surface may exit the at least one opening of each loop.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: July 20, 2021
    Assignee: Signify Holding B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet
  • Publication number: 20210207785
    Abstract: A housing (10) for a lighting device is disclosed. The housing comprises an elongate base region (21) and opposing elongate sidewalls (23) extending from opposite elongate sides of the elongate base region towards respective terminal ends (24), wherein each of the opposing elongate sidewalls (23) has an optically transmissive inner surface (11) separated from an outer surface (13) by a distance of 5 millimeters or less to form a cavity (15) for housing a reflective foil or a thermally conductive member. The inner surface (11) extends across the elongate base region (21), and it comprises a recess (25) in the elongate base region (21) for housing a light engine (31). Also disclosed is a luminaire (1) including such a housing (10) and a method of manufacturing such an optically transmissive housing (10).
    Type: Application
    Filed: December 4, 2018
    Publication date: July 8, 2021
    Inventors: RIFAT ATA MUSTAFA HIKMET, BERT WOUTERS, PAULUS ALBERTUS VAN HAL, JOHANNES PETRUS MARIA ANSEMS
  • Publication number: 20210197444
    Abstract: The invention provides a method comprising 3D printing a 3D item (1) by means of fused deposition modelling, the method comprising a 3D printing stage comprising layer-wise depositing an extrudate (321) comprising 3D printable material (201) to provide the 3D item (1) comprising 3D printed material (202), wherein during at least part of the 3D printing stage the extrudate (321) comprises a core-shell extrudate (1321) comprising a core (2321) comprising a core material (2011), and a shell (2322) comprising a shell material (2012), wherein the core material (2011) comprises a first thermoplastic material (111) and the shell material (2012) comprises a second thermoplastic material (112) different from the first thermoplastic material (111), or vice versa, wherein the first thermoplastic material (111) is an elastomeric material having a Young's modulus in the range of 2 to 200 MPa, a first low glass transition temperature TLG1 of at maximum 0° C.
    Type: Application
    Filed: August 22, 2019
    Publication date: July 1, 2021
    Inventors: PAULUS ALBERTUS VAN HAL, V, PATRICK ZUIDEMA, BERT WOUTERS, RIFAT ATA MUSTAFA HIKMET
  • Patent number: 11047537
    Abstract: The present disclosure provides a light-emitting diode, LED, module (100) which may include a plurality of LEDs (110) assembled on a flexible substrate (120). The LED module (110) may include a cover (130) which at least partially covers the plurality of LEDs (110) and include a first constituent having elastic properties. The cover (130) may include a transformable second constituent inserted within the first constituent and adapted to, after transformation, form an interpenetrating polymer network to fix the shape of the LED module. The present disclosure also provides a method for fixing the shape of a LED module, a method of fabricating a lighting device including a LED module, and a lighting device including a LED module.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: June 29, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet
  • Publication number: 20210195148
    Abstract: The invention provides a full color projection system (1000) comprising a lighting system (100) configured to provide first light (111) including blue light, second light (121) including one or more of green and yellow light, third light (131) including red light, wherein the first light (111), the second light (121), and the third light (131) include light having a wavelength of 430 nm or larger; a further light source (140) configured to provide further light source light (141) including one or more of UV light and short wavelength blue light having a wavelength of 420 nm or smaller, wherein the first light (111), second light (121), third light (131) and the further light source light (141) have mutually differing spectral power distributions; a spatial light modulator system (200) configured to receive the first light (111), the second light (121), the third light (131), and the further light source light (141), wherein the spatial light modulator system (200) is configured to provide a plurality of pixel
    Type: Application
    Filed: October 18, 2018
    Publication date: June 24, 2021
    Inventors: TIES VAN BOMMEL, RIFAT ATA MUSTAFA HIKMET
  • Publication number: 20210154913
    Abstract: A method for 3D printing a 3D item (10), the method comprising (i) providing 3D printable material (201) comprising particles (410) embedded in the 3D printable material (201), wherein the particles (410) have a longest dimension length (L1), a shortest dimension length (L2), and an aspect ratio AR defined as the ratio of the longest dimension length (L1) and the shortest dimension length (L2), and (ii) depositing during a printing stage 3D printable material (201) to provide the 3D item (10) to provide layers (230) of the 3D printed material (202) with a layer height (H), wherein: (i) 1<AR<4 and 1<H/L2<100.
    Type: Application
    Filed: June 22, 2018
    Publication date: May 27, 2021
    Inventors: RIFAT ATA MUSTAFA HIKMET, LOES JOHANNA MATHILDA KOOPMANS, STEFAN WILLI JULIUS GRUHLKE
  • Publication number: 20210154912
    Abstract: A printer head (100) for a 3D-printing apparatus, comprising a nozzle (110) arranged to extrude a printing material along a principal axis (A) of the nozzle. The nozzle comprises an opening (120) having a first area (130) for allowing a flow of printing material there through, and an element (140) arranged centrally with respect to the opening in a plane perpendicular to the principal axis of the nozzle. The element has a cross-sectional second area (150) parallel to the first area, wherein the second area, in a projection on the first area in a direction along the principal axis, is defined by the first area, such that the nozzle, during operation of the printer head, allows a flow of printing material through the opening and around the element.
    Type: Application
    Filed: June 19, 2018
    Publication date: May 27, 2021
    Inventors: RIFAT ATA MUSTAFA HIKMET, UWE CHITTKA
  • Patent number: 11015765
    Abstract: A lighting device (100) for use in a luminaire (200) comprising: —a base (101) having a longitudinal axis (LA) and comprising an electrical connector (102) for connecting the lighting device (100) to a luminaire socket (201) of the luminaire (200), —at least one LED-filament (103) comprising a substrate (104) having an elongated body and a plurality of light sources (105) mechanically coupled to the substrate (104), the plurality of light sources (105) configured for emitting light (106) in a first spatial light distribution, —at least one light guide (107) having an elongated body, comprising at least one light in-coupling portion (108) at at least on the external periphery of the at least one light guide (107) for coupling light (106) into the at least one light guide (107), a plurality of light out-coupling portions (109) for coupling light (106) out of the at least one light guide (107) in a second spatial light distribution, —an at least in part light-transmissive envelope (110) at least partly encapsula
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: May 25, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet, Alexander Henricus Waltherus Van Eeuwijk
  • Publication number: 20210148533
    Abstract: A light emitting diode, LED, filament lamp (100), comprising at least one filament (120, 120a, 120b) extending over a length, L, along a longitudinal axis, A, wherein the LED filament comprises an array of a plurality of LEDs (140) extending along the longitudinal axis, and an encapsulant (145) at least partially enclosing the plurality of LEDs, wherein the encapsulant comprises a luminescent material (150), and wherein at least one of the thickness, TL, of the encapsulant along a transverse axis, B, perpendicular to the longitudinal axis, and the concentration, CL, of the luminescent material in the encapsulant, varies over at least a portion of the length, L, of the at least one filament along the longitudinal axis, whereby the color temperature, CTL, of the light emitted from the at least one LED filament varies over the length of the at least one LED filament at least along the portion thereof.
    Type: Application
    Filed: April 9, 2019
    Publication date: May 20, 2021
    Inventors: TIES VAN BOMMEL, RIFAT ATA MUSTAFA HIKMET, ROBERT JACOB PET
  • Patent number: 11007707
    Abstract: The invention provides a method for manufacturing a 3D item (1) by means of 3D printing. The method comprises the step of depositing, during a printing stage, 3D printable material (201) to provide 3D printed material (202), wherein the 3D printable material (201) comprises a core-shell filament (320) comprising (i) a core (321) comprising a core material (1321) having one or more of a core glass temperature Tg1 and a core melting temperature Tm1 and (ii) a shell (322) comprising a shell material (1322) having one or more of a shell glass temperature Tg2 and a shell melting temperature Tm2, wherein one or more of the shell glass temperature Tg2 and the shell melting temperature Tm2 is lower than one or more of the core glass temperature Tg1 and the core melting temperature Tm1.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 18, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Rifat Ata Mustafa Hikmet, Paulus Albertus Van Hal
  • Publication number: 20210141143
    Abstract: A light guide (1) is presented. The light guide (1) comprises a body (2) made of a transparent polymer with nanoparticles (3) arranged therein, said body (2) comprising at least one locally deformed section (4) forming a local light out-coupling portion (6) of the light guide (1), wherein the local light out-coupling portion (6) comprises crazes (5) at, or in vicinity of, at least a portion of the nanoparticles (3) arranged in the at least one portion of the light guide (1), the crazes (5) are acting as light scatterers. Also a method for introducing a local light out-coupling portion (6) in a light guide (1) is presented.
    Type: Application
    Filed: June 4, 2018
    Publication date: May 13, 2021
    Inventors: RIFAT ATA MUSTAFA HIKMET, TIES VAN BOMMEL
  • Publication number: 20210138721
    Abstract: The invention provides a method for 3D printing a 3D item (1), the method comprising (i) providing 3D printable material (201) comprising particles (410) embedded in the 3D printable material (201), wherein the particles (410) are reflective for at least part of the visible light, wherein the particles (410) have a particle length (L1), a particle height (L2), and an aspect ratio AR defined as the ratio of the particle length (L1) and the particle height (L2), wherein AR>5, and (ii) layer-wise depositing the 3D printable material (201) to provide the 3D item (10) with layers (322) of the 3D printed material (202) with a layer height (H) and a layer width (W), and wherein the 3D printable material (201) has a particle concentration C selected from the range of 0.001-30 vol. % of the particles (410) relative to the total volume of the 3D printable material (201).
    Type: Application
    Filed: April 9, 2019
    Publication date: May 13, 2021
    Inventors: RIFAT ATA MUSTAFA HIKMET, STEFAN WILLI JULIUS GRUHLKE, LOES JOHANNA MATHILDA KOOPMANS
  • Publication number: 20210131643
    Abstract: The invention provides a collimator device for a lighting application which comprises a collimator panel having a first end face which receives input light and a second end face which provides collimated light. The second end face is opposite to the first end face. The collimator panel comprises a plurality of walls which extend between the first end face and the second end face to obtain a grid of cells. The cells extend between the first end face and the second end face to obtain the collimated light. At least the plurality of the walls are arranged to obtain cross-sections of the associated cells which form an auxetic structure. The collimator panel is deformable from a first structure into a second structure by changing the cross-section of the associated cells to change the collimated light from a first spatial distribution into collimated light having a second spatial distribution. The first spatial distribution is different from the second spatial distribution.
    Type: Application
    Filed: May 23, 2018
    Publication date: May 6, 2021
    Inventors: TIES VAN BOMMEL, Rifat Ata Mustafa HIKMET