Patents by Inventor Junwon Lee
Junwon Lee 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: 9589077Abstract: A method for designing a lens of a lighting device having a first spherical surface refracting light generated from an LED device that is a light source and a second spherical surface refracting the light passing through the first spherical surface includes determining an irradiation surface that is an area onto which light passing through the second spherical surface is irradiated, forming a reference circle disposed within the irradiation surface; designing a free curved surface of the first spherical surface by using light emitted from the LED device as an input direction vector and a coordinate within the reference circle as an output direction vector to calculate normal vectors, and designing a free curved surface of the second spherical surface by using light refracted by the first spherical surface as an input direction vector and a coordinate within the irradiation surface as an output direction vector to calculate normal vectors.Type: GrantFiled: June 19, 2015Date of Patent: March 7, 2017Assignee: LG ELECTRONICS INC.Inventors: Sunjung Park, Chunji Hong, Junwon Lee
-
Publication number: 20150370925Abstract: A method for designing a lens of a lighting device having a first spherical surface refracting light generated from an LED device that is a light source and a second spherical surface refracting the light passing through the first spherical surface includes determining an irradiation surface that is an area onto which light passing through the second spherical surface is irradiated, forming a reference circle disposed within the irradiation surface; designing a free curved surface of the first spherical surface by using light emitted from the LED device as an input direction vector and a coordinate within the reference circle as an output direction vector to calculate normal vectors, and designing a free curved surface of the second spherical surface by using light refracted by the first spherical surface as an input direction vector and a coordinate within the irradiation surface as an output direction vector to calculate normal vectors.Type: ApplicationFiled: June 19, 2015Publication date: December 24, 2015Applicant: LG ELECTRONICS INC.Inventors: Sunjung Park, Chunji Hong, Junwon Lee
-
Patent number: 8860310Abstract: A lamp including a two-sided source plate, a plurality of light sources, a lens, a diffuser plate, and a driver insulator is disclosed. One set of the light sources generates white light and is attached to one side of the source plate. Another set of the light sources generates colored light and is attached to the source plate's other side. The lens encapsulates the white light-generating set, and redirects that white light. The driver insulator and the diffuser plate are each in contact with the source plate's other side. The driver insulator, diffuser plate, and that side of the source plate define a light box region that contains the colored light-generating set of light sources. The driver insulator acts as a reflector, and the diffuser plate acts as a diffuser, such that colored light is dispersed from the light box region through the diffuser plate.Type: GrantFiled: November 19, 2012Date of Patent: October 14, 2014Assignee: OSRAM SYLVANIA Inc.Inventors: Michelle Kun Huang, Glenn Freeman, Junwon Lee
-
Patent number: 8851734Abstract: A light-guiding article has a film substrate that has at least one patterned surface having a plurality of discrete surface features and an incident edge that is substantially orthogonal to the at least one patterned surface. Each surface feature in the plurality of discrete surface features extends along a length direction that is substantially parallel to the incident edge. Taken in cross-section along the length direction, each surface feature has a positively sloped portion, a substantially flat portion, and a negatively sloped portion. A first widthwise cross-section taken at a first position through the positively sloped portion has the same shape as a second widthwise cross-section taken at a second position through the negatively sloped portion.Type: GrantFiled: March 27, 2008Date of Patent: October 7, 2014Assignee: SKC Haas Display Films Co., Ltd.Inventor: Junwon Lee
-
Patent number: 8785453Abstract: A novel arylpiperazine-containing purine derivatives and a pharmaceutical composition comprising the same as an active ingredient, which are useful for preventing or treating depressive disorders, are provided.Type: GrantFiled: November 5, 2010Date of Patent: July 22, 2014Assignee: Green Cross CorporationInventors: Jinhwa Lee, Eun-Jung Park, Suk Youn Kang, Younggyu Kong, Junwon Lee, Hyun Jung Kim, Myung Eun Jung, Ki-Nam Lee, Jeongmin Kim, Ae Nim Pae, Woo-Kyu Park
-
Publication number: 20130335961Abstract: A lamp including a two-sided source plate, a plurality of light sources, a lens, a diffuser plate, and a driver insulator is disclosed. One set of the light sources generates white light and is attached to one side of the source plate. Another set of the light sources generates colored light and is attached to the source plate's other side. The lens encapsulates the white light-generating set, and redirects that white light. The driver insulator and the diffuser plate are each in contact with the source plate's other side. The driver insulator, diffuser plate, and that side of the source plate define a light box region that contains the colored light-generating set of light sources. The driver insulator acts as a reflector, and the diffuser plate acts as a diffuser, such that colored light is dispersed from the light box region through the diffuser plate.Type: ApplicationFiled: November 19, 2012Publication date: December 19, 2013Applicant: OSRAM SYLVANIA INC.Inventors: Michelle Kun Huang, Glenn Freeman, Junwon Lee
-
Patent number: 8602591Abstract: A light fixture, such as for an overhead street light, is disclosed. A light redirection device (1) may have a central axis (CA), a front-back plane (FB) through the central axis (CA) that separates a front volume (FV) from a back volume (BV), and a left-right plane (LR) through the central axis (CA) and perpendicular to the front-back plane (FB). The light redirection device (1) may include a lens (10) for producing output light (9) skewed toward the front volume (FV). The lens (10) may have a recessed inner face (11) facing the hemisphere (3) that is generally symmetric with respect to the left-right plane (LR) and is asymmetric with respect to the front-back plane (FB). The inner face (11) may have a concave central region (CR), a convex peripheral region (PR) and an inflection zone (IZ) between the central region (CR) and the peripheral region (PR).Type: GrantFiled: May 19, 2011Date of Patent: December 10, 2013Assignee: OSRAM SYLVANIA Inc.Inventor: Junwon Lee
-
Patent number: 8586550Abstract: The present invention relates to a novel compound with thiazole ring having an inhibitory activity against sodium-dependent glucose cotransporter 2 (SGLT2) being present in the intestine and kidney, and a pharmaceutical composition comprising the same as an active ingredient, which is useful for preventing or treating metabolic disorders, particularly diabetes.Type: GrantFiled: June 10, 2011Date of Patent: November 19, 2013Assignee: Green Cross CorporationInventors: Jinhwa Lee, Jeongmin Kim, Suk Ho Lee, Junwon Lee, Kwang-Seop Song, Eun-Jung Park, Min Ju Kim, Hee Jeong Seo, Sung-Han Lee, Eun Jung Son, Jong Yup Kim, Suk Youn Kang, Younggyu Kong
-
Publication number: 20130090298Abstract: The present invention relates to a novel compound with thiazole ring having an inhibitory activity against sodium-dependent glucose cotransporter 2 (SGLT2) being present in the intestine and kidney, and a pharmaceutical composition comprising the same as an active ingredient, which is useful for preventing or treating metabolic disorders, particularly diabetes.Type: ApplicationFiled: June 10, 2011Publication date: April 11, 2013Applicant: GREEN CROSS CORPORATIONInventors: Jinhwa Lee, Jeongmin Kim, Suk Ho Lee, Junwon Lee, Kwang-Seop Song, Eun-Jung Park, Min Ju Kim, Hee Jeong Seo, Sung-Han Lee, Eun Jung Son, Jong Yup Kim, Suk Youn Kang, Younggyu Kong
-
Patent number: 8314555Abstract: A lamp including a two-sided source plate, a plurality of light sources, a lens, a diffuser plate, and a driver insulator is disclosed. One set of the light sources generates white light and is attached to one side of the source plate. Another set of the light sources generates colored light and is attached to the source plate's other side. The lens encapsulates the white light-generating set, and redirects that white light. The driver insulator and the diffuser plate are each in contact with the source plate's other side. The driver insulator, diffuser plate, and that side of the source plate define a light box region that contains the colored light-generating set of light sources. The driver insulator acts as a reflector, and the diffuser plate acts as a diffuser, such that colored light is dispersed from the light box region through the diffuser plate.Type: GrantFiled: December 2, 2009Date of Patent: November 20, 2012Assignee: Osram Sylvania Inc.Inventors: Michelle Kun Huang, Glenn Freeman, Junwon Lee
-
Publication number: 20120232090Abstract: A novel arylpiperazine-containing purine derivatives and a pharmaceutical composition comprising the same as an active ingredient, which are useful for preventing or treating depressive disorders, are provided.Type: ApplicationFiled: November 5, 2010Publication date: September 13, 2012Applicant: GREEN CROSS CORPORATIONInventors: Jinhwa Lee, Eun-Jung Park, Suk Youn Kang, Younggyu Kong, Junwon Lee, Hyun Jung Kim, Myung Eun Jung, Ki-Nam Lee, Jeongmin Kim, Ae Nim Pae, Woo-Kyu Park
-
Publication number: 20120147611Abstract: A lamp having a candle-like appearance and using one or more light-emitting diodes (LEDs) as its light source is presented. The candle-like appearance arises because light is emitted from only a small volume at or near the center of the bulb. The heat sink and control electronics are located outside the bulb of the lamp. Inside the bulb is a set of secondary optics that guide the light from one or more LEDs to an emission point at a prescribed location in the interior of the bulb. The secondary optics include a light pipe that guides light away from the LED chip, and a volume scattering element that receives the light from the light pipe and scatters it into various directions. The volume scattering element is made from a transparent base material, and includes transparent particles of a predetermined size and refractive index.Type: ApplicationFiled: January 31, 2012Publication date: June 14, 2012Applicant: OSRAM SYLVANIA, INC.Inventors: Michelle Huang, Junwon Lee, Tom Spehalski, Fernando Ulloa
-
Publication number: 20110317413Abstract: A light fixture, such as for an overhead street light, is disclosed. A light redirection device (1) may have a central axis (CA), a front-back plane (FB) through the central axis (CA) that separates a front volume (FV) from a back volume (BV), and a left-right plane (LR) through the central axis (CA) and perpendicular to the front-back plane (FB). The light redirection device (1) may include a lens (10) for producing output light (9) skewed toward the front volume (FV). The lens (10) may have a recessed inner face (11) facing the hemisphere (3) that is generally symmetric with respect to the left-right plane (LR) and is asymmetric with respect to the front-back plane (FB). The inner face (11) may have a concave central region (CR), a convex peripheral region (PR) and an inflection zone (IZ) between the central region (CR) and the peripheral region (PR).Type: ApplicationFiled: May 19, 2011Publication date: December 29, 2011Applicant: OSRAM SYLVANIA Inc.Inventor: Junwon Lee
-
Patent number: 8070326Abstract: A lens that angularly redistributes light from an LED is disclosed. The desired illuminance (power per area) pattern for an LED/lens combination has a relatively flat center, a knee, and a gradual tail. By overlapping adjacent combinations' tails, the resulting illuminance pattern may be generally uniform, with relatively loose tolerances on LED/lens placement and performance. The lens has a proximal face with a concave spherical indentation with its center at the light source. The lens's distal face has a “center thickness” (CT) on-axis, a peak thickness away from a longitudinal axis of about 1.0 to 1.2 times the CT, a radius at which the peak thickness occurs of about 0.5 to 1.0 times the CT, a radius at which the thickness returns to the CT of about 1.1 to 1.5 times the CT, and a radius (maximum lateral extent) of the lens of about 1.6 to 1.9 times the CT.Type: GrantFiled: February 25, 2010Date of Patent: December 6, 2011Assignee: Osram Sylvania Inc.Inventor: Junwon Lee
-
Publication number: 20110164426Abstract: A lens that angularly redistributes light from an LED is disclosed. The desired illuminance (power per area) pattern for an LED/lens combination has a relatively flat center, a knee, and a gradual tail. By overlapping adjacent combinations' tails, the resulting illuminance pattern may be generally uniform, with relatively loose tolerances on LED/lens placement and performance. The lens has a proximal face with a concave spherical indentation with its center at the light source. The lens's distal face has a “center thickness” (CT) on-axis, a peak thickness away from a longitudinal axis of about 1.0 to 1.2 times the CT, a radius at which the peak thickness occurs of about 0.5 to 1.0 times the CT, a radius at which the thickness returns to the CT of about 1.1 to 1.5 times the CT, and a radius (maximum lateral extent) of the lens of about 1.6 to 1.9 times the CT.Type: ApplicationFiled: February 25, 2010Publication date: July 7, 2011Applicant: OSRAM SYLVANIA INC.Inventor: Junwon Lee
-
Publication number: 20110095442Abstract: The present invention provides a composite light guiding plate comprising a light guiding layer comprising an incident face for receiving light from at least one light source, a light guiding output surface that is also generally orthogonal to the incident face, a featured surface, opposite the light-guiding output surface and generally orthogonal to the input face for redirecting light through the light guiding output surface. Further, the featured surface comprises a plurality of rows of linear prismatic structures extended in a length direction that is substantially perpendicular to the incident face and having height and width dimensions of 10 to 200 microns and wherein the length-to-width aspect ratio of the linear prismatic structures is greater than 100:1 the thickness of the light guiding layer is less than 1 mm.Type: ApplicationFiled: January 3, 2011Publication date: April 28, 2011Applicant: SKC Haas Display Films Co., Ltd.Inventors: Jehuda GREENER, Charles C. Anderson, Junwon Lee, Herong Lei, Michael R. Landry, Tseng-En Hu, Peter T. Aylward
-
Publication number: 20100301747Abstract: A lamp including a two-sided source plate, a plurality of light sources, a lens, a diffuser plate, and a driver insulator is disclosed. One set of the light sources generates white light and is attached to one side of the source plate. Another set of the light sources generates colored light and is attached to the source plate's other side. The lens encapsulates the white light-generating set, and redirects that white light. The driver insulator and the diffuser plate are each in contact with the source plate's other side. The driver insulator, diffuser plate, and that side of the source plate define a light box region that contains the colored light-generating set of light sources. The driver insulator acts as a reflector, and the diffuser plate acts as a diffuser, such that colored light is dispersed from the light box region through the diffuser plate.Type: ApplicationFiled: December 2, 2009Publication date: December 2, 2010Applicant: OSRAM SYLVANIA INC.Inventors: Michelle Kun Huang, Glenn Freeman, Junwon Lee
-
Patent number: 7775700Abstract: The invention generally relates to an optical turning film for providing light redirection, comprising: (a) an input surface for accepting incident light comprising a plurality of roof prism structures arranged in a two-dimensional array; and, (b) a substantially planar output surface.Type: GrantFiled: October 1, 2004Date of Patent: August 17, 2010Assignee: Rohm and Haas Electronics Materials LLCInventor: Junwon Lee
-
Publication number: 20100097821Abstract: A lamp having a candle-like appearance and using one or more light-emitting diodes (LEDs) as its light source is presented. The candle-like appearance arises because light is emitted from only a small volume at or near the center of the bulb. The heat sink and control electronics are located outside the bulb of the lamp. Inside the bulb is a set of secondary optics that guide the light from one or more LEDs to an emission point at a prescribed location in the interior of the bulb. The secondary optics include a light pipe that guides light away from the LED chip, and a volume scattering element that receives the light from the light pipe and scatters it into various directions. The volume scattering element is made from a transparent base material, and includes transparent particles of a predetermined size and refractive index.Type: ApplicationFiled: January 9, 2009Publication date: April 22, 2010Applicant: OSRAM SYLVANIA, INC.Inventors: Michelle Huang, Junwon Lee, Tom Spehalski, Fernando Ulloa
-
Patent number: 7663712Abstract: This invention relates to a display apparatus comprising: a) a light source; b) a light guiding plate for transmitting light from the light source outward from a two-dimensional light-providing surface, one dimension of the light-providing surface defined in a width direction orthogonal to the path of incident light from the light source defined in a width direction orthogonal to the path of incident light from the light source and the other dimension of the light-providing surface defined in a length direction, orthogonal to the width direction; c) a linear divergence reduction surface for reducing the divergence of light from the light providing surface predominantly with respect to the width direction, to provide a linearly divergence-reduced illumination, whereby divergence along the width direction at full-width half-maximum is less than about 50% of divergence at full-width half-maximum along the length direction; d) a liquid crystal display component for modulating the linearly divergence-reduced lightType: GrantFiled: October 10, 2005Date of Patent: February 16, 2010Assignee: SKC Haas Display Films Co., Ltd.Inventor: Junwon Lee