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公开(公告)号：US20230032271A1
公开(公告)日：2023-02-02
申请号：US17787936
申请日：2021-03-29
申请人： Envisics Ltd
摘要： A head-up display is described. A spatial light modulator is arranged to display a diffractive pattern of first picture content and/or second picture content. A screen assembly has first and second diffusers arranged in a stepped configuration so that the first diffuser is spatially offset from the second diffuser by a perpendicular distance. A light source is arranged to illuminate the diffractive pattern such that the first picture content is formed on the first diffuser and/or the second picture content is formed on the second diffuser. An optical system comprising at least one optical element having optical power is arranged so that the first and second diffusers have different object distances to the optical system.
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公开(公告)号：US20220283433A1
公开(公告)日：2022-09-08
申请号：US17334009
申请日：2021-05-28
申请人： Envisics Ltd
发明人： Jamieson Christmas , Michael Spurr , Daniel Molina , Gary Mills
摘要： A head-up display arranged to form a virtual image viewable from an eye-box area. The head-up display is arranged to received picture content within a sub-region of a substantially quadrilateral display area. The head-up display further comprises an optical relay system arranged to relay the received picture content to an eye-box of the head-up display such that a virtual image of the picture content is visible therefrom. The optical relay system comprises at least one optical component shaped in correspondence with the shape of the sub-region. The shape of the eye-box area is non-rectangular such as a corner-cropped rectangular shape or elliptical shape.
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公开(公告)号：US20220252879A1
公开(公告)日：2022-08-11
申请号：US17587327
申请日：2022-01-28
申请人： ENVISICS LTD
发明人： Jamieson Christmas , Máté Karner , Ruisheng Lin , Timothy Smeeton
摘要： Display system and methods including a display device arranged to display a hologram and spatially modulate light and a hologram engine arranged to receive contribution information identifying contributory and non-contributory areas of the display device based on the location of an entrance pupil. The contributory areas of the display device propagate light passing through the entrance pupil at the determined location. The non-contributory areas of the display device propagate light stopped by the entrance pupil at the determined location. The contribution information identifies (i) at least one primary contributory area of the display device that contributes to a primary image and (ii) at least one secondary contributory area of the display device that contributes to a secondary image. The hologram engine is arranged to determine a hologram based on the at least one primary contributory area of the display device identified by the processing engine.
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公开(公告)号：US20220146826A1
公开(公告)日：2022-05-12
申请号：US17582732
申请日：2022-01-24
申请人： ENVISICS LTD
发明人： Jamieson Christmas , Alexander Cole , Mate Karner
摘要： There is provided a head-up display for a vehicle, the head-up display comprising: a picture generating unit arranged to generate a picture on a light receiving surface; and an optical system arranged to image the picture, wherein the optical system comprises: an input arranged to receive light of the picture; an output arranged to output light forming an image of the picture; a first mirror and second mirror arranged to guide light from the input to the output along an optical path, wherein the optical path comprises: a first optical path from the input to the second mirror including a transmission through the first mirror; and second optical path from the second mirror to the output including a reflection off the first mirror.
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公开(公告)号：US11307425B2
公开(公告)日：2022-04-19
申请号：US17059935
申请日：2019-08-22
申请人： Envisics Ltd
发明人： Mate Karner , Jamieson Christmas
摘要： A head-up display for a vehicle having a window. The head-up display comprises a picture generating unit and a projection engine. The picture generating unit is arranged to output pictures. Each picture comprises a first picture component and a second picture component. The projection engine is arranged to receive the pictures output by the picture generating unit and project the pictures onto the window of the vehicle in order to form a first virtual image of the first picture component at a first virtual image distance and a second virtual image of the second picture component at a second virtual image distance. Light of the first picture component is polarised in a first polarisation direction and light of the second picture component is polarised in a second polarisation direction perpendicular to the first polarisation direction. The projection engine comprises an optical element having first optical power in the first polarisation direction and second optical power in the second polarisation direction such that the first virtual image distance is not equal to the second virtual image distance. The projection engine is further arranged such that the first virtual image and second virtual image at least partially overlap.
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公开(公告)号：US20210055692A1
公开(公告)日：2021-02-25
申请号：US17092606
申请日：2020-11-09
申请人： Envisics Ltd
发明人： Jamieson Christmas
IPC分类号： G03H1/22
摘要： There is provided a lighting system for a vehicle. The lighting system comprises a holographic projector and a light distribution system. The holographic projector comprises a hologram engine and a spatial light modulator. The hologram engine is arranged to output holograms. The spatial light modulator is arranged to display each hologram and spatially-modulate light in accordance with each hologram. The spatially-modulated light forms a holographic reconstruction, corresponding to each hologram, on a replay plane. The light distribution system comprises a plurality of optical fibres. Each optical fibre comprises an input optically-coupled to respective sub-area of the replay plane and an output optically coupled with an illumination sub-system of the vehicle.
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