Patents by Inventor Kheng Leng Tan
Kheng Leng Tan 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: 20140184096Abstract: An illumination device, system, and method are disclosed. The illumination system includes a first set of light sources and a second set of light sources, driven by a first driver and second driver, respectively. The system further includes a dimming control system that implemented dimming control logic. The dimming control logic coordinates the operation of the first and second drivers such that the first and second sets of light sources are activated and deactivated so as to achieve substantially constant color temperature during dimming operations.Type: ApplicationFiled: January 3, 2013Publication date: July 3, 2014Applicant: Avago Technologies General IP (Singapore) Pte., Ltd.Inventors: Keat Chuan Ng, Choon Guan Ko, Kheng Leng Tan
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Publication number: 20140168975Abstract: A lighting system and lighting fixture cover are disclosed. Specifically, the lighting system can provide an optimum light beam shape for a number of different lighting applications. The lighting system includes a PCB and cover with one or more lenses and one or more snap-fit locking mechanisms to secure the cover to the PCB. The cover enables a narrow beam output without sacrificing beam intensity or brightness. The cover simplifies the assembly process of a lighting fixture.Type: ApplicationFiled: December 14, 2012Publication date: June 19, 2014Applicant: Avago Technologies General IP (Singapore) Pte. LtdInventors: Keat Chuan Ng, Ju Chin Poh, Kheng Leng Tan
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Publication number: 20140160746Abstract: An illumination device, system, and method are disclosed. The illumination device includes an active cooling mechanism and a controller for the same. When the controller activates or deactivates the active cooling mechanism, one or more optical elements on the illumination device are automatically moved, thereby adjusting at least one characteristic of the light emitted by the illumination device.Type: ApplicationFiled: December 10, 2012Publication date: June 12, 2014Applicant: Avago Technologies General IP (Singapore) Pte. LtdInventors: Keat Chuan Ng, Kheng Leng Tan, Ju Chin Poh
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Publication number: 20140153219Abstract: A cooling system utilizing a potential energy that provides cooling with low power consumption is disclosed. The cooling system may comprise a heat dissipating member, a support structure, a movable assembly, and a coil. In one embodiment, the movable assembly may be configured to oscillate above the heat dissipating member by utilizing induction from the coil and the potential energy to generate air flow that provide cooling on the heat dissipating member. In other embodiments, the movable assembly may be configured to oscillate substantially within the recess of the heat dissipating member.Type: ApplicationFiled: December 5, 2012Publication date: June 5, 2014Applicant: Avago Technologies General IP (Singapore) Pte. LtdInventors: Chuan Hoe Chan, Ju Chin Poh, Kheng Leng Tan
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Publication number: 20140146531Abstract: An illumination device, system, and method are disclosed. The illumination device includes one or more first light sources and one or more second light sources. The one or more first light sources may correspond to discrete light sources whereas the one or more second light sources may correspond to sheet or film-type light sources, such as Organic Light Emitting Diode (OLED) sheets.Type: ApplicationFiled: November 27, 2012Publication date: May 29, 2014Applicant: Avago Technologies General IP (Singapore ) Pte. Ltd.Inventors: Keat Chuan Ng, Kheng Leng Tan, Yi Feng Hwang, Ju Chin Poh
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Publication number: 20130215611Abstract: A lighting system and method are disclosed. Specifically, the lighting system includes a hybrid canopy that can provide an optimum light beam shape for a number of different lighting applications. The hybrid canopy is equipped with lighting clusters of different types, thereby enabling a broader beam output without sacrificing beam intensity or brightness.Type: ApplicationFiled: February 22, 2012Publication date: August 22, 2013Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Kum Soon Wong, Kheng Leng Tan, Chuan Hoe Chan
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Publication number: 20130062655Abstract: A package for a light source, a semiconductor device, and methods of manufacturing the same are disclosed. In particular, a Light Emitting Diode (LED) dice is attached to a bonding pad of the light source package by two discrete types of different adhesives. One of the adhesives may be curable under exposure to Ultraviolet (UV) light and the other adhesive may be cured under thermal radiation, but is stable when exposed to UV light.Type: ApplicationFiled: September 9, 2011Publication date: March 14, 2013Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Keat Chuan Ng, Bit Tie Chan, Kheng Leng Tan
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Patent number: 8356917Abstract: An embodiment of a light source comprises a first lead and a second lead. The first lead comprises a first mounting surface wherein a first light emitter is connectable to the first mounting surface, a support member attached to the first mounting surface, a conductor portion attached to the support member, and at least one tab extending from the first mounting surface, the at least one tab being used to hold the first lead during fabrication. The second lead is second lead located adjacent the first lead and comprises a second mounting surface wherein a second light emitter is connectable to the second mounting surface, at least two support members attached to the second mounting surface, and a conductor portion attached to each of the support members.Type: GrantFiled: August 19, 2009Date of Patent: January 22, 2013Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Keat Chuan Ng, Chiau Jin Lee, Kheng Leng Tan, Aizar Abdul Karim Norfidathul
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Patent number: 8299482Abstract: Embodiments of light sources are disclosed herein. An embodiment of the light source comprises a lead frame having a first side and a second side. A hole extends through the lead frame between the first side and the second side. An adhesive is located in the hole and extends beyond the hole, wherein the adhesive extends beyond the diameter of the hole on the first side and the second side of the first lead frame. A light emitter adhered to the adhesive proximate the first side of the first lead frame.Type: GrantFiled: October 5, 2009Date of Patent: October 30, 2012Assignee: Intellectual Discovery Co., Ltd.Inventors: Keat Chuan Ng, Lig Yi Yong, Kheng Leng Tan
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Publication number: 20120211785Abstract: A Plastic Leaded Chip Carrier (PLCC) package is disclosed. The PLCC package includes a lead frame with an integrated reflector cup. The reflector cup is directly connected to a heat sink, which improves the ability of the PLCC package to distribute heat away from the light source that is provided in the reflector cup.Type: ApplicationFiled: February 23, 2011Publication date: August 23, 2012Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Keat Chuan Ng, Kheng Leng Tan, Chiau Jin Lee
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Patent number: 8232574Abstract: A surface mount light emitting device package with mechanical latching means for locking a lens on to the package is provided. The surface mount light emitting package may include an encapsulation layer or a lens, a lead frame, at least one lead, a body, a die, and a layer of transparent gel encapsulant material. The lead frame may include at least one protrusion which is bent upward to from at least one latch for engaging the lens.Type: GrantFiled: October 28, 2010Date of Patent: July 31, 2012Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Keat Chuan Ng, Chiau Jin Lee, Kheng Leng Tan
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Publication number: 20120162979Abstract: A light-emitting device with at least two light-emitting dies encapsulated with two different types of the wavelength-converting materials is disclosed. Each of the wavelength-converting materials is configured to produce a visible light from a narrow band light near UV region produced by the light-emitting dies, but with different correlated color temperatures (CCT) and different spectral contents. The combination of the two visible light forms the desired visible white light. The Color rendering index of the light-emitting device is tunable by adjusting the supply current to the light-emitting dies. In another embodiment, a light module with tunable CRI for an illumination system is disclosed.Type: ApplicationFiled: December 23, 2010Publication date: June 28, 2012Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Keat Chuan Ng, Bit Tie Chan, Kheng Leng Tan
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Publication number: 20120104436Abstract: A surface mount light emitting device package with mechanical latching means for locking a lens on to the package is provided. The surface mount light emitting package may include an encapsulation layer or a lens, a lead frame, at least one lead, a body, a die, and a layer of transparent gel encapsulant material. The lead frame may include at least one protrusion which is bent upward to from at least one latch for engaging the lens.Type: ApplicationFiled: October 28, 2010Publication date: May 3, 2012Inventors: Keat Chuan Ng, Chiau Jin Lee, Kheng Leng Tan
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Patent number: 8115385Abstract: A light source having a lead frame, a body, and a plurality of dies, each die having an LED thereon is disclosed. The body includes a top surface, a bottom surface and a plurality of side surfaces. The lead frame includes first, second, and third sections, the first section includes a die mounting area having a first protrusion that passes through the body and terminates in a pad on the bottom surface. The second and third sections each include a protrusion that is bent to form first and second leads that run along one of the side surfaces. Each die is bonded to the die mounting area such that a first contact is electrically connected to the die mounting area, and a second contact is connected to one of the second and third sections. The first protrusion of the first section provides improved heat transfer.Type: GrantFiled: August 30, 2010Date of Patent: February 14, 2012Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Aizar Abdul Karim Norfidathul, Chiau Jin Lee, Kheng Leng Tan, Keat Chuan Ng, Kiam Soon Ong
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Publication number: 20110176573Abstract: In an embodiment, the invention provides a SLCC package comprising first and second electrically conductive terminals, a polysiloxane and glass fiber structural body, a light source and a polysiloxane encapsulant. The first and second electrically conductive terminals are attached to the polysiloxane and glass fiber structural body. The light source is electrically connected to the first and second electrically conductive terminals. The polysiloxane and glass fiber structural body has a cavity that contains at least a portion of the polysiloxane encapsulant.Type: ApplicationFiled: March 30, 2011Publication date: July 21, 2011Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Kheng Leng Tan, Keat Chuan Ng, Kee Hon Lee
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Patent number: 7977692Abstract: A method and apparatus is described for a light-emitting diode with high light output. A polymeric cup to reflect light holds a light-emitting diode chip connected to surface-mounting leads and is filled with an optically clear filter. The use of a polymeric cup allows for better bonding between the cup and the filler.Type: GrantFiled: March 31, 2006Date of Patent: July 12, 2011Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Ak Wing Leong, Kheng Leng Tan
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Patent number: 7968899Abstract: A light source and method for making the same are disclosed. The light source includes a substrate, a die, and a cup. The substrate has a plurality of electrical traces thereon and the die includes an LED that is connected to two of the traces. The cup overlies the substrate and is filled with an encapsulant material. The die is located within the cup and is encapsulated by the substrate and the encapsulant material. The cup and encapsulant material have substantially the same coefficient of thermal expansion. The cup can include reflective sidewalls positioned to reflect light leaving the die. The cup, encapsulant and substrate can be constructed from the same material.Type: GrantFiled: August 27, 2007Date of Patent: June 28, 2011Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Norfidathul Aizar Abdul Karim, Siew It Pang, Kheng Leng Tan, Tong Fatt Chew
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Patent number: 7938557Abstract: A light source and a method for operating the same are disclosed. The light source includes a light emitter and a controller. The light emitter generates light in response to a control signal coupled thereto. The light emitter is characterized by an age related to the amount of light that has been cumulatively generated by the light emitter, the generated light for a given control signal changing with the age. The controller measures the age of the light emitter and generates the control signal based on the desired light intensity and the measured age of the light emitter. In one embodiment, the controller stores an age value for the light emitter, and the controller determines the control signal in response to an input signal specifying a desired light intensity from the light emitter, the controller updating the age value each time the control signal is determined.Type: GrantFiled: December 23, 2004Date of Patent: May 10, 2011Assignee: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Sundar Natarajan Yoganandan, Thye Linn Mok, Kian Shin Lee, Norfidathul Aizar Abdul Karim, Su Lin Oon, Siew It Pang, Kheng Leng Tan, Fakhrul Arifin Mohd Afif, Wen Ya Ou, Yew Cheong Kuan
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Publication number: 20110079802Abstract: Embodiments of light sources are disclosed herein. An embodiment of the light source comprises a lead frame having a first side and a second side. A hole extends through the lead frame between the first side and the second side. An adhesive is located in the hole and extends beyond the hole, wherein the adhesive extends beyond the diameter of the hole on the first side and the second side of the first lead frame. A light emitter adhered to the adhesive proximate the first side of the first lead frame.Type: ApplicationFiled: October 5, 2009Publication date: April 7, 2011Applicant: Avago Technologies ECBU IP (Singapore) Pte. Ltd.Inventors: Keat Chuan Ng, Lig Yi Yong, Kheng Leng Tan
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Publication number: 20110044062Abstract: An embodiment of a light source comprises a first lead and a second lead. The first lead comprises a first mounting surface wherein a first light emitter is connectable to the first mounting surface, a support member attached to the first mounting surface, a conductor portion attached to the support member, and at least one tab extending from the first mounting surface, the at least one tab being used to hold the first lead during fabrication. The second lead is second lead located adjacent the first lead and comprises a second mounting surface wherein a second light emitter is connectable to the second mounting surface, at least two support members attached to the second mounting surface, and a conductor portion attached to each of the support members.Type: ApplicationFiled: August 19, 2009Publication date: February 24, 2011Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.Inventors: Keat Chuan Ng, Chiau Jin Lee, Kheng Leng Tan, Aizar Abdul Karim Norfidathul