Patents by Inventor Ligang Wang
Ligang Wang 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: 20180081086Abstract: An electronic device may have transparent members such as display cover layers and camera windows. A transparent member such as a sapphire member may be provided with an antireflection coating. The antireflection coating may have a stack of dielectric thin-film interference filter layers that form a thin-film interference filter that suppresses visible light reflections. The stack of dielectric thin-film interference filter layers may have thicknesses and materials that provide the thin-film interference filter and coating with low light reflection properties while enhancing scratch resistance. An adhesion layer may be used to help adhere the stack of thin-film interference filter layer to the transparent member. An antismudge coating such as a fluoropolymer coating may be used to reduce smudging. Graded layers and layers with elevated hardness values may be used in the coating.Type: ApplicationFiled: April 11, 2017Publication date: March 22, 2018Inventors: Ligang Wang, Zhenbin Ge, Xianwei Zhao, Avery P. Yuen, Stephen C. Cool
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Publication number: 20180081093Abstract: An electronic device may have an optical system that includes one or more light-based components. The light-based components may include light-emitting components such as light-emitting diodes or lasers and may include light-detecting components such as photodiodes or digital image sensors. The optical system may include a light diffuser. The light diffuser may diffuse light that is being detected by a light-detecting component or may diffuse light that is being emitted by a light-emitting component. Light diffusers in optical systems may be formed from patterned light diffuser layers on transparent substrates. Layers of sealant, thin glass layers, antireflection coatings, and other layers may be incorporated into the light diffusers. The light diffuser layers may operate at visible wavelengths and infrared wavelengths. An infrared light diffuser layer may be formed from a patterned silicon layer such as a patterned layer of hydrogenated amorphous silicon.Type: ApplicationFiled: September 16, 2016Publication date: March 22, 2018Inventors: Ligang Wang, Miodrag Scepanovic, Neil MacKinnon, Zhenbin Ge
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Publication number: 20180081100Abstract: An electronic device may be provided with one or more light-sensing components such as a camera and a color ambient light sensor. Optical structures such as camera lenses or a light pipe may be used to convey light from a window in an electronic device to a light-sensing component. One or more infrared-light-blocking-and-visible-light transmitting light filters may be interposed between a light-receiving window in an electronic device and a light-sensing component. The light filters may include infrared-light-blocking glass substrates, silver or other infrared-light-blocking thin films, and/or thin-film interference filters formed from stacks of dielectric layers that serve as infrared light-blocking layers.Type: ApplicationFiled: June 22, 2017Publication date: March 22, 2018Inventors: Ligang Wang, Zhang Jia, Serhan O. Isikman
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Publication number: 20180067245Abstract: An electronic device may be provided with a display. The display may have a display cover layer. The display may have an active area with pixels and an inactive area without pixels. An opaque masking layer such as a layer of black ink may be formed on the underside of the display cover layer in the inactive area. Windows may be formed from openings in the opaque masking layer. Optical components such as infrared-light-based optical components may be aligned with the windows. The windows may include coatings in the openings that block visible light while transmitting infrared light. The window coatings may be formed from polymer layers containing pigments, polymer layers containing dyes that are coated with antireflection layers, thin-film interference filters formed from stacks of thin-film layers, or other coating structures.Type: ApplicationFiled: April 10, 2017Publication date: March 8, 2018Inventors: Marta M. Giachino, Naoto Matsuyuki, Matthew S. Rogers, Xianwei Zhao, Ligang Wang
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Publication number: 20180067212Abstract: An electronic device may be provided with a display. The display may have a display cover layer. The display may have an active area with pixels and an inactive area without pixels. An opaque masking layer such as a layer of black ink may be formed on the underside of the display cover layer in the inactive area. Windows may be formed from openings in the opaque masking layer. Optical components such as infrared-light-based optical components may be aligned with the windows. The windows may include coatings in the openings that block visible light while transmitting infrared light. The window coatings may be formed from polymer layers containing pigments, polymer layers containing dyes that are coated with antireflection layers, thin-film interference filters formed from stacks of thin-film layers, or other coating structures.Type: ApplicationFiled: April 13, 2017Publication date: March 8, 2018Inventors: James R. Wilson, Kenichi Nakajima, Ligang Wang, Mark T. Winkler, Matthew S. Rogers, Naoto Matsuyuki, Xianwei Zhao
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Patent number: 9857511Abstract: The present disclosure relates to thin film optical interference filters. The filters include a substrate and a plurality of alternating material layers deposited on the substrate. When operated at about 45° angle of incidence, the filters exhibit at least one of improved polarization splitting, edge steepness, bandpass bandwidth, and blocking, relative to conventional thin film interference filters.Type: GrantFiled: February 13, 2015Date of Patent: January 2, 2018Assignee: Semrock, Inc.Inventors: Turan Erdogan, Ligang Wang
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Publication number: 20170286072Abstract: Apparatuses, methods and storage media associated with generating a custom class library are disclosed herein. In embodiments, an apparatus may include an analyzer configured to receive a workload for a device and a class library used by the workload, analyze the workload and class library, identify one or more workload full API call chains, and generate information about the one or more workload full API call chains. Further, the apparatus may include a generator to generate from the class library, a custom class library for the workload that is smaller than the class library, based at least in part on the one or more workload full API call chains. Other embodiments may be disclosed or claimed.Type: ApplicationFiled: April 11, 2017Publication date: October 5, 2017Inventors: Lei Luc SHI, Xin WANG, Mingqiu SUN, Ligang WANG, Gopinatth SELVARAJE
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Patent number: 9759984Abstract: A portable electronic device has a device housing, and an electronic camera module in the device housing. The module has a focusing lens to focus light from a scene, an imaging sensor to receive the focused light, and an electro-optic variable aperture to allow different amounts of the light from the scene to reach the imaging sensor. The electro-optic variable aperture may include a first aperture stack placed on a transparent substrate and a second aperture stack placed on the first aperture stack. The first aperture stack defines a first aperture and the second aperture stack defines a second aperture that is larger than the first aperture. Each aperture stack includes a transparent conductive oxide layer that is common with the adjacent aperture stack. Alternatively the electro-optic variable aperture may include an aperture stack that has two transparent conductive oxide layer layers, where one layer is in the form of concentric annuli.Type: GrantFiled: May 31, 2016Date of Patent: September 12, 2017Assignee: APPLE INC.Inventors: Tingjun Xu, Jeffrey Nathan Gleason, Zhenbin Ge, Linsen Bie, Ligang Wang, Wookyung Bae, Sunggu Kang
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Publication number: 20170219752Abstract: An optical element includes a transparent substrate having a planar front surface, and a multilayer structure, which is formed on the front surface of the substrate and includes multiple thin film layers, including an outer layer that is exposed to ambient air. The multilayer structure defines, at a target wavelength, a series of resonant cavities that create, for a beam of light at the target wavelength that is incident on the optical element at a target angle, a passband for an s-polarization component of the beam and a stopband for a p-polarization component of the beam.Type: ApplicationFiled: January 28, 2016Publication date: August 3, 2017Inventor: Ligang Wang
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Publication number: 20170201657Abstract: An optical component includes an absorption-based filter having a selected cut-on wavelength and a multilayer interference filter, arranged in series with the absorption-based filter and having a passband containing the cut-on wavelength of the absorption-based filter.Type: ApplicationFiled: January 10, 2016Publication date: July 13, 2017Inventor: Ligang Wang
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Patent number: 9674141Abstract: Various embodiments are generally directed to implementing a secure mailbox in resource-constrained embedded systems. An apparatus to establish communication with a trusted execution environment includes a processor component, a co-processor component for executing the trusted execution environment, a host operating system component for execution by the processor component and including one or more application components, a mailbox array component for execution by the co-processor to store one or more mailbox components, each mailbox component being associated with a mailbox identification number, and a mailbox firewall component for execution by the co-processor component to facilitate communication between the one or more application components and the one or more mailbox components. Other embodiments are described and claimed.Type: GrantFiled: December 27, 2013Date of Patent: June 6, 2017Assignee: INTEL CORPORATIONInventors: Jiu-Tao Nie, Mingqiu Sun, Chengrui Deng, Xin Wang, Ligang Wang, Gopinatth Selvaraje
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Patent number: 9632757Abstract: Apparatuses, methods and storage media associated with generating a custom class library are disclosed herein. In embodiments, an apparatus may include an analyzer configured to receive a workload for a device and a class library used by the workload, analyze the workload and class library, identify one or more workload full API call chains, and generate information about the one or more workload full API call chains. Further, the apparatus may include a generator to generate from the class library, a custom class library for the workload that is smaller than the class library, based at least in part on the one or more workload full API call chains. Other embodiments may be disclosed or claimed.Type: GrantFiled: September 10, 2014Date of Patent: April 25, 2017Assignee: Intel CorporationInventors: Lei luc Shi, Xin Wang, Mingqiu Sun, Ligang Wang, Gopinatth Selvaraje
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Patent number: 9547178Abstract: An optical image splitter disposed in the path of image-bearing light along an optical axis has a coated dichroic surface disposed at an angle of 15 degrees or less relative to incident light along the optical axis. The coated dichroic surface has a number of layers of material, the of layers including layers having a first refractive index, nL, and layers having a second refractive index, nH, greater than the first refractive index. The coated surface transmits light of at least a first wavelength range to form a first image at an image plane and reflects light of a second wavelength range to form a second image at the image plane.Type: GrantFiled: August 15, 2012Date of Patent: January 17, 2017Assignee: Semrock. Inc.Inventors: Turan Erdogan, Ligang Wang, Prashant Prabhat
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Patent number: 9465599Abstract: The present invention provides a method, a device and a system for installing terminal software. The method comprises: a terminal determining to access a computer host as a driver according to attributes of a current port, and uploading an automatic operating program to the host; the host running the autorun program, and then the automatic operating program obtaining information related to terminal software on the host and feeding the obtained information related to terminal software back to the terminal; the terminal using the information related to terminal software to obtain corresponding terminal software from a server, and uploading the obtained terminal software to the host; and the automatic operating program installing the terminal software on the host.Type: GrantFiled: April 2, 2011Date of Patent: October 11, 2016Assignee: ZTE CorporationInventor: Ligang Wang
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Publication number: 20160291946Abstract: Apparatuses, methods and storage media associated with generating a custom class library are disclosed herein. In embodiments, an apparatus may include an analyzer configured to receive a workload for a device and a class library used by the workload, analyze the workload and class library, identify one or more workload full API call chains, and generate information about the one or more workload full API call chains. Further, the apparatus may include a generator to generate from the class library, a custom class library for the workload that is smaller than the class library, based at least in part on the one or more workload full API call chains. Other embodiments may be disclosed or claimed.Type: ApplicationFiled: September 10, 2014Publication date: October 6, 2016Inventors: Lei Luc SHI, Xin WANG, Mingqiu SUN, Ligang WANG, Gopinatth SELVARAJE
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Patent number: 9423622Abstract: A dichroic beamsplitter has a composite prism that has at least first and second prism elements that are coupled together along facing surfaces, wherein the respective facing surfaces of the first and second prism elements are equidistant from each other. The composite prism has a first flat external surface that lies within a first plane, a second flat external surface that lies within a second plane that is perpendicular to the first plane, a third flat external surface that lies within a third plane that is parallel to the second plane, and a coated surface internal to the composite prism and having a multilayer thin-film dichroic beamsplitter coating, wherein the coated surface lies within a fourth plane that intersects at least one of the first, second, and third planes at an angle that is less than about 25 degrees.Type: GrantFiled: March 13, 2013Date of Patent: August 23, 2016Assignee: Semrock, Inc.Inventors: Turan Erdogan, Ligang Wang, Prashant Prabhat
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Patent number: 9354370Abstract: The present disclosure relates to thin film notch filters having the basic structure of an interference filter. In some embodiments, the filters according to the present disclosure exhibit at least one notch correlating to a pass band defect. The filters of the present disclosure may exhibit at least one of improved pass band bandwidth, improved edge steepness, narrower notch band FWHM, and lower sensitivity to material mismatch, relative to prior known thin film notch filters based on the basic structure of an interference filter. The present disclosure also relates to methods of making the filters described herein, and the use of these filters in optimal measurement systems.Type: GrantFiled: September 25, 2008Date of Patent: May 31, 2016Assignee: SEMROCK, INC.Inventors: Turan Erdogan, Ligang Wang
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Patent number: 9304237Abstract: Optical filters and methods of making optical filters are provided. The optical filter can include a first and second stack of layers. The first stack of layers can be configured to provide a cut-on edge for s-polarized radiation incident at a second wavelength value and a cut-off edge for s-polarized radiation incident at a third wavelength value. The second stack of layers can be configured to provide a cut-off edge for s-polarized radiation incident on the second stack of layers at a fourth wavelength value. Further, the fourth wavelength value can lie between the second wavelength value and the third wavelength value. Furthermore, a curve or line of full-width half-maximum (FWHM) values of the optical filter pass-band can define a first derivative with respect to angle-of-incidence values at at least one angle-of-incidence value that is substantially positive or substantially zero.Type: GrantFiled: December 10, 2012Date of Patent: April 5, 2016Assignee: Semrock, Inc.Inventors: Ligang Wang, Turan Erdogan
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Publication number: 20160011350Abstract: The present disclosure relates to thin film optical interference filters. The filters include a substrate and a plurality of alternating material layers deposited on the substrate. When operated at about 45° angle of incidence, the filters exhibit at least one of improved polarization splitting, edge steepness, bandpass bandwidth, and blocking, relative to conventional thin film interference filters.Type: ApplicationFiled: February 13, 2015Publication date: January 14, 2016Inventors: Turan Erdogan, Ligang Wang
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Publication number: 20150195236Abstract: Various embodiments are generally directed to implementing a secure mailbox in resource-constrained embedded systems. An apparatus to establish communication with a trusted execution environment includes a processor component, a co-processor component for executing the trusted execution environment, a host operating system component for execution by the processor component and including one or more application components, a mailbox array component for execution by the co-processor to store one or more mailbox components, each mailbox component being associated with a mailbox identification number, and a mailbox firewall component for execution by the co-processor component to facilitate communication between the one or more application components and the one or more mailbox components. Other embodiments are described and claimed.Type: ApplicationFiled: December 27, 2013Publication date: July 9, 2015Inventors: Jiu-Tao Nie, Mingqiu Sun, Chengrui Deng, Xin Wang, Ligang Wang, Gopinatth Selvaraje