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公开(公告)号：EP4435531A1
公开(公告)日：2024-09-25
申请号：EP24153128.4
申请日：2024-01-22
申请人： Envisics Ltd.
发明人： LIN, Ruisheng , CHRISTMAS, Jamieson , SMEETON, Tim
CPC分类号： G03H1/2294 , G03H1/0808 , G03H2210/45220130101 , G03H1/16 , G03H1/2205 , G03H2001/224220130101 , G03H2001/225220130101 , G03H2001/225520130101 , G03H2001/22120130101 , G03H2223/1620130101 , G02B2027/012520130101 , G02B27/0172 , G02B2027/017420130101 , G02B27/0103
摘要： There is provided a driver for a display device comprising a plurality of pixels. The driver is arranged to drive the display device to display a hologram of a picture on the plurality of pixels such that, when the display device is suitably illuminated, a holographic reconstruction of the picture is formed downstream of the display device. The holographic reconstruction comprises a plurality of image points. The hologram is arranged such that each image point of the holographic reconstruction is formed using a contiguous group of pixels of the display device. Each contiguous group of pixels comprises less than 5% of a total number of pixels of the display device.
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公开(公告)号：EP4425271A1
公开(公告)日：2024-09-04
申请号：EP23210071.9
申请日：2023-11-15
申请人： Envisics Ltd.
发明人： CHRISTMAS, Jamieson
CPC分类号： G02B2027/012520130101 , G02B27/0081 , G03H2001/22120130101 , G03H1/2205 , G03H2001/22620130101 , G03H2001/224220130101 , G03H2001/225520130101 , G03H1/0808 , G03H1/2294 , G03H2223/1620130101 , G02B27/0172 , G02B2027/017420130101 , G02B27/0103
摘要： There is provided an optical system having a viewing window. The optical system comprises a display device arranged to spatially modulated light in accordance with a hologram displayed thereon to form a holographic wavefront. The holographic wavefront forms a holographic reconstruction of an image downstream of the display device. The optical system further comprises a waveguide arranged to receive the holographic wavefront and waveguide the holographic wavefront between a pair of reflective surfaces thereof. One surface of the pair of reflective surfaces is partially transmissive such that a plurality of replicas of the holographic wavefront are emitted therefrom. The optical system further comprises an optical component between the holographic reconstruction and the waveguide, wherein the optical component is arranged to (a) form a virtual image of the holographic reconstruction upstream of the display device and (b) form an image of the displayed hologram at infinity or downstream of the waveguide.
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公开(公告)号：EP4435532A1
公开(公告)日：2024-09-25
申请号：EP24153217.5
申请日：2024-01-22
申请人： Envisics Ltd
发明人： SMEETON, Timothy , LIN, Ruisheng
CPC分类号： G03H2223/1620130101 , G03H1/0808 , G03H1/16 , G03H1/2205 , G03H2001/22120130101 , G03H2001/224220130101 , G03H1/2294 , G03H2001/225220130101 , G03H2001/225520130101 , G03H2210/45220130101
摘要： There is provided a driver for a display device comprising a plurality of pixels. The driver is arranged to drive the display device to display a hologram of a picture on the plurality of pixels such that, when the display device is suitably illuminated, a holographic reconstruction of the picture is formed. The holographic reconstruction comprises a plurality of image points. The hologram is arranged such that each image point of the holographic reconstruction is formed using a contiguous group of pixels of the display device. Each contiguous group of pixels has a first shape comprising a first side and a second side. The first and second sides are arranged such that, if the first shape is replicated, a respective first side of a first replica of the first shape is suitable for cooperating with a respective second side of a second replica of the first shape.
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公开(公告)号：EP4398043A1
公开(公告)日：2024-07-10
申请号：EP23214514.4
申请日：2023-12-06
申请人： Envisics Ltd.
发明人： COLE, Alexander
IPC分类号： G03H1/22
CPC分类号： G03H1/2294 , G03H2227/0320130101 , G03H1/2205 , G03H2001/22120130101 , G03H2001/220720130101 , G03H2001/221520130101 , G03H2001/224720130101 , G03H1/22
摘要： A method of calibrating a picture generating unit. The method comprises displaying a pattern corresponding to a picture on a spatial light modulator. The method further comprises propagating light along a propagation axis wherein the light illuminates the spatial light modulator so as to spatially modulate the light. A first portion of the propagation axis passes through a first lens of the picture generating unit. The method further comprises changing the position of the first portion of the propagation axis with respect to an optical axis of the first lens. In some embodiments, the first portion of the propagation axis is substantially parallel to the optical axis of the first lens.
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