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公开(公告)号：US20180081085A1
公开(公告)日：2018-03-22
申请号：US15484888
申请日：2017-04-11
Applicant: Apple Inc.
Inventor： Zhenbin Ge , Xianwei Zhao , Wookyung Bae , Sunggu Kang , Ligang Wang , Avery P. Yuen , Stephen C. Cool , John Z. Zhong
Abstract: 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.
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公开(公告)号：US20170201657A1
公开(公告)日：2017-07-13
申请号：US14991960
申请日：2016-01-10
Applicant: APPLE INC.
Inventor： Ligang Wang
Abstract: 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.
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公开(公告)号：US11714212B1
公开(公告)日：2023-08-01
申请号：US17472454
申请日：2021-09-10
Applicant: Apple Inc.
Inventor： Timothy M. Gustafson , Isamu Konishiike , Ligang Wang , Ryozo Fukuzaki , Andrej Halabica
CPC classification number: G02B1/113 , C23C16/0272 , C23C16/402 , C23C16/403 , C23C16/45536 , C23C16/56 , G02B1/118
Abstract: Optical coatings for curved or non-planar substrates are disclosed. Optical coatings may include AR (antireflection) coatings or absorbing (“black” optical) coatings. The optical coatings may include a nanostructure layer formed on top of a stack of one or more materials. Both the nanostructure layer and the stack may be deposited on a curved or non-planar substrate using plasma-enhanced atomic layer deposition (PEALD) to provide conformal coating of the substrate. The nanostructure layer may include a mixture of aluminum hydroxide and aluminum oxide hydroxide that is formed by placing a PEALD-deposited aluminum oxide layer in heated deionized water for a predetermined time period. The materials in the stack may be alternated to provide tuning of the optical properties in the optical coating.
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公开(公告)号：US20220268976A1
公开(公告)日：2022-08-25
申请号：US17677882
申请日：2022-02-22
Applicant: Apple Inc.
Inventor： Yoshikazu Shinohara , Takeyoshi Saiga , Ligang Wang
Abstract: A device may include a light-folded projector that may include an infrared (IR) light emitter and a light folding element. The light folding element may receive IR light emitted from the IR light emitter and fold the IR light one or more times to guide the IR light passing through the light folding element to exit the device to an environment. The device may also include a detector that may detect and/or recognize an object in the environment using the IR light from the light-folded projector, and a front-facing camera to capture images of the environment in front of the device.
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公开(公告)号：US10334184B2
公开(公告)日：2019-06-25
申请号：US15268116
申请日：2016-09-16
Applicant: Apple Inc.
Inventor： Ligang Wang , Miodrag Scepanovic , Neil MacKinnon , Zhenbin Ge
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US10145999B2
公开(公告)日：2018-12-04
申请号：US15008467
申请日：2016-01-28
Applicant: APPLE INC.
Inventor： Ligang Wang
Abstract: 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.
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公开(公告)号：US20190094069A1
公开(公告)日：2019-03-28
申请号：US16038916
申请日：2018-07-18
Applicant: Apple Inc.
Inventor： Tingjun Xu , Avery P. Yuen , James W. Hillendahl , Ligang Wang , Ove Lyngnes , Sunggu Kang , Xianwei Zhao , Xingxing Cai
Abstract: An electronic device may be provided with a display. An opaque layer may be formed on an inner surface of a display cover layer in an inactive area of the display. An optical component window may be formed from the opening. A light guide may be aligned with the optical component window and may be used to guide light from the optical component window to an optical component such as an ambient light sensor. The light guide may have a core surrounded by a cladding. The core may be formed from a material such as blue glass that absorbs infrared light and that transmits visible light. Particles of titanium dioxide or other high-refractive-index material may be incorporated into the core to enhance the refractive index of the core. Thin-film interference filters may be formed on the light guide to enhance infrared light blocking.
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公开(公告)号：US20180081093A1
公开(公告)日：2018-03-22
申请号：US15268116
申请日：2016-09-16
Applicant: Apple Inc.
Inventor： Ligang Wang , Miodrag Scepanovic , Neil MacKinnon , Zhenbin Ge
CPC classification number: H04N5/33 , G02B5/0231 , G02B5/0294
Abstract: 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.
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公开(公告)号：US20180081086A1
公开(公告)日：2018-03-22
申请号：US15484979
申请日：2017-04-11
Applicant: Apple Inc.
Inventor： Ligang Wang , Zhenbin Ge , Xianwei Zhao , Avery P. Yuen , Stephen C. Cool
Abstract: 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.
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公开(公告)号：US20180067245A1
公开(公告)日：2018-03-08
申请号：US15483974
申请日：2017-04-10
Applicant: Apple Inc.
Inventor： Marta M. Giachino , Naoto Matsuyuki , Matthew S. Rogers , Xianwei Zhao , Ligang Wang
CPC classification number: G02B5/281 , G02B1/115 , G02B5/285 , H01L27/1462 , H01L27/14649 , H01S5/4025
Abstract: 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.
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