Patents by Inventor David Pelka
David Pelka 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: 10983394Abstract: A light-emitting apparatus including a light-emitting element and a lens covering the light-emitting element. The lens includes an upper surface having a convex shape and a lower surface including a cavity to which light emitted from the light-emitting elements is incident, in which the cavity includes an apex facing an upper surface of the light-emitting element and configured to reduce Fresnel reflections emitted vertically.Type: GrantFiled: December 5, 2019Date of Patent: April 20, 2021Assignees: Seoul Semiconductor Co., Ltd., InteLED Corp.Inventors: Mark Jongewaard, William A. Parkyn, David Pelka
-
Publication number: 20200103707Abstract: A light-emitting apparatus including a light-emitting element and a lens covering the light-emitting element. The lens includes an upper surface having a convex shape and a lower surface including a cavity to which light emitted from the light-emitting elements is incident, in which the cavity includes an apex facing an upper surface of the light-emitting element and configured to reduce Fresnel reflections emitted vertically.Type: ApplicationFiled: December 5, 2019Publication date: April 2, 2020Inventors: Mark JONGEWAARD, William A. Parkyn, David Pelka
-
Patent number: 10503010Abstract: A light-emitting apparatus including a light-emitting element and a lens covering the light-emitting element. The lens includes an upper surface having a convex shape and a lower surface including a cavity to which light emitted from the light-emitting elements is incident, in which the cavity includes an apex facing an upper surface of the light-emitting element and configured to reduce Fresnel reflections emitted vertically.Type: GrantFiled: May 12, 2017Date of Patent: December 10, 2019Assignees: Seoul Semiconductor Co., Ltd., InteLED Corp.Inventor: David Pelka
-
Patent number: 9880417Abstract: A light-emitting apparatus having a 16:9 geometry includes light-emitting elements disposed on a first substrate or a second substrate, light flux control members respectively disposed on the light-emitting elements and on the first or second substrate, and a film stack disposed above the light flux control members. Each light flux control member includes a bottom surface section disposed on the first or second substrate, a non-rotationally symmetric input surface section having an inward recess disposed in the bottom surface section at a position directly above one of the light-emitting elements, and a non-rotationally symmetric output surface configured to refract light passing through the input surface section, and to transmit light outside. The light flux control members disposed on the first substrate are spaced 100 mm apart from each other in a first direction, and the light-emitting elements are spaced 23 mm away from the film stack.Type: GrantFiled: November 17, 2015Date of Patent: January 30, 2018Assignees: Seoul Semiconductor Co., Ltd., InteLED Corp.Inventors: Mark Jongewaard, William A. Parkyn, David Pelka
-
Publication number: 20170248822Abstract: A light-emitting apparatus including a light-emitting element and a lens covering the light-emitting element. The lens includes an upper surface having a convex shape and a lower surface including a cavity to which light emitted from the light-emitting elements is incident, in which the cavity includes an apex facing an upper surface of the light-emitting element and configured to reduce Fresnel reflections emitted vertically.Type: ApplicationFiled: May 12, 2017Publication date: August 31, 2017Inventor: David PELKA
-
Publication number: 20160070141Abstract: A light-emitting apparatus having a 16:9 geometry includes light-emitting elements disposed on a first substrate or a second substrate, light flux control members respectively disposed on the light-emitting elements and on the first or second substrate, and a film stack disposed above the light flux control members. Each light flux control member includes a bottom surface section disposed on the first or second substrate, a non-rotationally symmetric input surface section having an inward recess disposed in the bottom surface section at a position directly above one of the light-emitting elements, and a non-rotationally symmetric output surface configured to refract light passing through the input surface section, and to transmit light outside. The light flux control members disposed on the first substrate are spaced 100 mm apart from each other in a first direction, and the light-emitting elements are spaced 23 mm away from the film stack.Type: ApplicationFiled: November 17, 2015Publication date: March 10, 2016Inventors: Mark JONGEWAARD, William A. PARKYN, David PELKA
-
Patent number: 9255695Abstract: Exemplary embodiments of the present invention relate to an illumination lens disposed over a light-emitting diode (LED). The illumination lens includes an internal surface surrounding the LED and configured to intercept light emitted by the LED, wherein the internal surface comprises an arch-shaped non-rotationally symmetric, elongated horizontal cross-section. The illumination lens also includes an external surface comprising a central cusp, the external surface extending laterally with non-axially-symmetrical profiles in different horizontal directions, the non-axially-symmetric profiles being elliptical with respect to a tilted major axis of the illumination lens, wherein the light-emitting device is configured to produce an elongated illumination pattern.Type: GrantFiled: August 22, 2013Date of Patent: February 9, 2016Assignees: Seoul Semiconductor Co., Ltd., InteLED Corp.Inventors: Mark Jongewaard, William A. Parkyn, David Pelka
-
Publication number: 20140056006Abstract: Exemplary embodiments of the present invention relate to an illumination lens disposed over a light-emitting diode (LED). The illumination lens includes an internal surface surrounding the LED and configured to intercept light emitted by the LED, wherein the internal surface comprises an arch-shaped non-rotationally symmetric, elongated horizontal cross-section. The illumination lens also includes an external surface comprising a central cusp, the external surface extending laterally with non-axially-symmetrical profiles in different horizontal directions, the non-axially-symmetric profiles being elliptical with respect to a tilted major axis of the illumination lens, wherein the light-emitting device is configured to produce an elongated illumination pattern.Type: ApplicationFiled: August 22, 2013Publication date: February 27, 2014Applicants: InteLED Corp., Seoul Semiconductor Co., Ltd.Inventors: Mark JONGEWAARD, William A. Parkyn, David Pelka
-
Publication number: 20070086197Abstract: An apparatus includes a lens having a light entrance end forming a recess defining a concave surface, a heat sink having an end portion facing the recess and a light source positioned to transmit light having a predetermined wavelength via the concave surface of the recess into the lens. The lens may be a non-imaging lens or a total internal reflection lens (TIR) configured to radiate optical radiation received at the concave surface. The light source is in thermal communication with the heat sink to conduct heat generated by the light source to the heat sink.Type: ApplicationFiled: December 4, 2006Publication date: April 19, 2007Inventors: George Panagotacos, David Pelka, Roland Winston
-
Publication number: 20070058369Abstract: Various embodiments described herein comprise array of light emitting diodes and a cylindrical lens having front and rear curved surfaces. The cylindrical lens is disposed to receive light from the light emitting diodes and to redistribute the light. The cylindrical lens is located no more than about 8 inches distance from the front an illumination target, which may for example, comprise products on shelves in a refrigerator. The front and rear surfaces of the cylindrical lens are shaped to provide substantially uniform illumination across the target.Type: ApplicationFiled: July 26, 2006Publication date: March 15, 2007Inventors: William Parkyn, David Pelka
-
Publication number: 20060164833Abstract: A cylindrical irradiance-redistribution lens is positioned over a line of LEDs, and is shaped to redistribute their light for uniformly illuminating a nearby planar target, such as shelves, signs, or walls. The lens shape is calculated via matching the cumulative lateral flux functions of the line of LEDs with that of the uniformly illuminated planar target. Numerous preferred embodiments are disclosed for a variety of illumination geometries.Type: ApplicationFiled: January 17, 2006Publication date: July 27, 2006Inventors: William Parkyn, David Pelka