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公开(公告)号：US11698550B2
公开(公告)日：2023-07-11
申请号：US17329774
申请日：2021-05-25
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Andrew Acreman , Nathan James Smith , David James Montgomery
IPC: G02F1/1335 , G02F1/13363
CPC classification number: G02F1/133526 , G02F1/133541 , G02F1/133638
Abstract: A composite lens system may include one or more first optical elements configured to provide a first focal length selected from a first continuous range of focal lengths, as well as one or more second optical elements configured to provide a discrete focal length selected from a plurality of discrete focal lengths. The one or more first optical elements and the one or more second optical elements may be configured in series such that the composite lens system provides an output focal length based on a combination of the selected first focal length and the selected discrete focal length.
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公开(公告)号：US20210234132A1
公开(公告)日：2021-07-29
申请号：US16775600
申请日：2020-01-29
Applicant: Sharp Kabushiki Kaisha
Inventor： David James Montgomery
Abstract: A light-emitting device has enhanced light output by shaping as non-planar an emitting side surface of the filler material layer to improve light extraction. The light-emitting device includes a bank structure; an emissive cavity disposed within the bank structure; and a filler material layer disposed within the bank structure and on a light-emitting side of the emissive cavity. An emitting side surface of the filler material layer opposite from the emissive cavity is a non-planar emitting side surface. The emitting side surface is shaped such that the filler material layer includes a first region of positive curvature and a second region of negative curvature. The second region of negative curvature may be located adjacent to the bank structure, and the first region of positive curvature may be located centrally relative to the second region of negative curvature. The first region of positive curvature may be configured as a single element of positive curvature, or as a plurality of positive curvature elements such as a micro-lens array or a prism array.
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公开(公告)号：US20210041698A1
公开(公告)日：2021-02-11
申请号：US16535800
申请日：2019-08-08
Applicant: Sharp Kabushiki Kaisha
Inventor： Chengze Song , William Frederick Smith , David James Montgomery
Abstract: A head-mounted display (HMD) has an enhanced optical arrangement that permits high-resolution imaging in a compact device. The HMD system includes an optical arrangement; a first image panel, wherein the optical arrangement directs image light from the first image panel along a first optical pathway having a first length; and a second image panel arranged orthogonal to the first image panel, wherein the optical arrangement directs image light from the second image panel along a second optical pathway different from the first optical pathway having a second length. The first length is equal to the second length, and the optical arrangement is configured such that light from the first image panel and the second image panel are emitted from the HMD system in a combined fashion in a first eye direction. The optical arrangement may include a plurality of mirror components and a plurality of lens components, wherein the plurality of mirror components are configured to direct image light from the first and second image panels along respective optical pathways to the plurality of lens components.
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公开(公告)号：US20200161585A1
公开(公告)日：2020-05-21
申请号：US16193183
申请日：2018-11-16
Applicant: Sharp Kabushiki Kaisha
Inventor： James Andrew Robert Palles-Dimmock , Tim Michael Smeeton , David James Montgomery , Nathan James Smith
Abstract: A light-emitting device for use in a display device has enhanced directional light emission, and enhanced on-axis light emission in particular. A light-emitting device includes a layer structure that includes from a non-emitting side: a first electrode layer; a first charge transport layer; an emissive layer; a second charge transport layer; a second electrode layer; an optically transparent layer; and a partially transmitting reflector layer. The light-emitting device comprises a plurality of regions and each region emits light of a different wavelength, such as for example red, green, and blue light-emitting regions. The optically transparent layer is present in at least one of the plurality of regions. The optically transparent layer may be present in more than one of the plurality of regions, and a thickness of the optically transparent layer may differ in different regions to optimize light emission at different wavelengths. The light-emitting device may include a scattering layer that scatters the emitted light, which may be switchable to permit different viewing angle display modes.
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公开(公告)号：US10522787B1
公开(公告)日：2019-12-31
申请号：US16200817
申请日：2018-11-27
Applicant: Sharp Kabushiki Kaisha
Inventor： David James Montgomery , Edward Andrew Boardman , James Andrew Robert Palles-Dimmock , Tim Michael Smeeton
Abstract: A light-emitting device maximizes optical efficiency when the emissive layer is high refractive index material. Said device includes an emissive layer; a first electrode and a second electrode from which charges are generated; a first charge transport layer that injects charges from the first electrode into the emissive layer; and a second charge transport layer that injects charges from the second electrode into the emissive layer. A Fresnel reflection value at boundaries between the emissive layer and at least one of the first and second charge transport layers is from 5% through 30%, and at least one of the charge transport layers satisfies a half wavelength condition of having a thickness that is equal to within twenty percent of ½ of one wavelength of an integer multiple of ½ of one wavelength in the charge transport layer material within a bandwidth of emission of the emissive layer.
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Patent Agency Ranking
公开(公告)号：US10451936B1
公开(公告)日：2019-10-22
申请号：US15951297
申请日：2018-04-12
Applicant: Sharp Kabushiki Kaisha
Inventor： David James Montgomery , Hywel Hopkin , Jiyun Yu
IPC: G02F1/1347 , G02F1/1343 , F21V8/00
Abstract: A passive matrix display has corrugated electrode edges to reduce zone visibility within a display system. A passive matrix display includes a first substrate and a second substrate; a liquid crystal layer positioned between the first and second substrates; a patterned electrode layer formed on the first substrate comprising a plurality of individual electrodes, wherein adjacent individual electrodes are separated by an electrode gap; and a second electrode layer formed on the second substrate. At least a portion of opposing edges of adjacent individual electrodes at the electrode gap include corrugations. The elements of the corrugations may be any suitable shapes and/or sizes as may be suitable for any particular application. The corrugations may be uniformly shaped or varying, symmetric or asymmetric about a horizontal axis, and/or may have a regular or irregular pattern. Another aspect is a display system including the enhanced passive matrix display that reduces zone visibility.
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公开(公告)号：US20190317364A1
公开(公告)日：2019-10-17
申请号：US15953686
申请日：2018-04-16
Applicant: Sharp Kabushiki Kaisha
Inventor： David James Montgomery , Takeshi Ishida
IPC: G02F1/1335 , F21V8/00 , G02F1/1343 , H05B33/08 , G09G3/32 , G09G3/36
Abstract: A backlight assembly includes a light source, a light guide optically coupled to the light source that receives light from the light source, a substrate including an electrode layer and a hydrophobic surface located on the electrode layer, wherein the hydrophobic surface of the substrate is spaced apart from a surface of the light guide to define a cell gap, and a plurality of conductive liquid beads located within the cell gap. Liquid beads that are subject to an actuation voltage applied to the electrode layer are in an actuated state, and liquid beads that are not subject to an actuation voltage applied to the electrode layer are in a non-actuated state. When the liquid beads are in the non-actuated state, the liquid beads are in contact with the surface of the light guide for extracting light from the light guide, and when the liquid beads are in the actuated state, the liquid beads deform such that contact of the liquid beads with the surface of the light guide is reduced relative to the non-actuated state to reduce extraction of light from the lightguide, thereby dimming the backlight assembly.
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8.发明申请公开(公告)号：US20190285880A1
公开(公告)日：2019-09-19
申请号：US15923046
申请日：2018-03-16
Applicant: Sharp Kabushiki Kaisha
Inventor： Ka Ho Tam , David James Montgomery , Scott Wells
Abstract: A head-mounted display (HMD) system includes an optical arrangement; at least one moveable image panel, wherein the optical arrangement directs image light from the moveable image panel along a first optical pathway; a fixed image panel, wherein a portion of image light emitted from the fixed image panel is combined with image light of the at least one moveable image panel by the optical arrangement; and an adjustment mechanism that is configured to adjust an interpupillary distance (IPD) of the HMD system by moving the optical arrangement and the moveable image panel relative to the fixed image panel between a first position and a second position corresponding to different IPDs. The adjustment to the IPD maintains the first optical pathway. The HMD system further may include a sensing module that measures an adjustment position of the optical arrangement, and control electronics configured that determines the IPD based on the measured adjustment position, and updates image light emitted by the fixed image panel based on the IPD.
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公开(公告)号：US09946070B2
公开(公告)日：2018-04-17
申请号：US15063850
申请日：2016-03-08
Applicant: Sharp Kabushiki Kaisha
Inventor： Ka Ho Tam , David James Montgomery
CPC classification number: G02B27/0101 , G02B2027/0118 , G06T19/006 , G09G3/002 , H04N13/156 , H04N13/332 , H04N13/344 , H04N2213/001
Abstract: A head-up-display (HUD) system includes at least one scanning laser projector operative to generate laser light, and a stacked array of multiple-switchable screens arranged relative to the projector to receive laser light generated by the projector, each screen of the stacked array of multiple-switchable screens spaced apart from one another and operative to switch between a transparent state and a diffusive state. A controller is operatively coupled to the stacked array of multiple-switchable screens, the controller configured to time sequentially switch each screen of the array from a transparent state to a diffusive state, wherein only one screen is switched to the diffusive state at any given time. An output of the projector is arranged at an angle or a distance from imaging optics succeeding the array of screens to prevent a specular beam emitted by the at least one scanning laser projector from intercepting the imaging optics succeeding the array of screens when all screens are in the transparent state.
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公开(公告)号：US09377169B2
公开(公告)日：2016-06-28
申请号：US13948724
申请日：2013-07-23
Applicant: SHARP KABUSHIKI KAISHA
CPC classification number: F21S41/60 , F21S41/14 , F21S41/147 , F21S41/16 , F21S41/24 , F21S41/255 , F21S41/29 , F21S41/663
Abstract: A light source system comprising a projection lens, which is capable of producing a far-field image of a light source. The light source comprises a photoluminescent material that when illuminated by light from laser emitters of a first waveband emits light of a second or more wavebands of longer wavelength. The resulting light emission produces a color perceived as white. The light source is illuminated by a plurality of laser emitters arranged to illuminate the light source in an array-like manner from the front side. Control of the output of one or more of the laser emitters results in a variation of the spatial emission distribution from the light source and hence a variation of the far-field beam spot distribution via non-mechanical means. An optical system is arranged to image light emitted from the photoluminescent material into the far-field, which optical system comprises a converging lens.
Abstract translation: 一种光源系统，包括能够产生光源的远场图像的投影透镜。 光源包括光致发光材料，当被来自第一波段的激光发射器的光照射时，其发射具有较长波长的第二或更多个波段的光。 所得到的发光产生感觉为白色的颜色。 由多个激光发射器照射光源，该多个激光发射器从前侧以阵列状的方式照射光源。 对一个或多个激光发射器的输出的控制导致从光源的空间发射分布的变化，并且因此导致通过非机械装置的远场束斑分布的变化。 光学系统被布置成将从光致发光材料发射的光成像到远场，该光学系统包括会聚透镜。
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