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公开(公告)号：US20200326464A1
公开(公告)日：2020-10-15
申请号：US16843544
申请日：2020-04-08
申请人： Dualitas Ltd.
发明人： Ricardo Gomes , Pedro Moreira , Alexander Cole
摘要： There is described herein a diffuser assembly comprising a leaf spring, diffuser and at least one actuator. The leaf spring is arranged as a rectangular frame having a width, x, and height, y. The diffuser is suspended by the frame such as within the frame. The at least one actuator arranged to move, such as translate, the diffuser. The assembly is arranged such that the leaf spring provides in-plane (x-y plane) stiffness, kx and ky, less than the out-of-plane (z-direction) stiffness, kz.
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公开(公告)号：US20190041797A1
公开(公告)日：2019-02-07
申请号：US16051945
申请日：2018-08-01
申请人： Dualitas Ltd.
发明人： Jamieson Christmas , Alexander Cole
摘要： A holographic projector comprises a spatial light modulator, a light receiving member and a driver. The spatial light modulator is arranged to receive and represent a computer-generated hologram and spatially modulate light incident on the spatial light modulator to form a holographic reconstruction in accordance with the computer-generated hologram. The light receiving member is arranged to receive spatially modulated light along an optical axis from the spatial light modulator and the holographic reconstruction is formed on the light receiving member. The driver is coupled to the light receiving member to move the light receiving member in a plane, The driver is configured to move the light receiving member while maintaining an orientation of the light receiving member relative to the spatial light modulator substantially constant,
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公开(公告)号：US11409242B2
公开(公告)日：2022-08-09
申请号：US16051945
申请日：2018-08-01
申请人： Dualitas Ltd.
发明人： Jamieson Christmas , Alexander Cole
摘要： A holographic projector includes a spatial light modulator, a light receiving member and a driver. The spatial light modulator is arranged to receive and represent a computer-generated hologram and spatially modulate light incident on the spatial light modulator to form a holographic reconstruction in accordance with the computer-generated hologram. The light receiving member is arranged to receive spatially modulated light along an optical axis from the spatial light modulator and the holographic reconstruction is formed on the light receiving member. The driver is coupled to the light receiving member to move the light receiving member in a plane. The driver is configured to move the light receiving member while maintaining an orientation of the light receiving member relative to the spatial light modulator substantially constant.
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公开(公告)号：US20190064738A1
公开(公告)日：2019-02-28
申请号：US16112153
申请日：2018-08-24
申请人： Dualitas Ltd
发明人： Alexander Cole , Jamieson Christmas
IPC分类号： G03H1/30
摘要： A display system and a method of adjusting a display system are disclosed. A first plurality of pixels is arranged to display a first hologram, receive light of a first wavelength, and output spatially-modulated light according to the first hologram, along a first optical path. A first Fourier transform lens on the first optical path forms a first holographic reconstruction at a replay plane. A second plurality of pixels is arranged to display a second hologram, receive light of a second wavelength, and output spatially modulated light according to the second hologram, along a second optical path. A second Fourier transform lens on the second optical path forms a second holographic reconstruction at the replay plane. A first optical element on the first optical path is arranged to receive the output light from a first part of the first optical path and direct it along a second part of the first optical path to the replay plane. A second optical element on the second optical path is arranged to receive the output light of the second wavelength from a first part of the second optical path and direct it along a second part of the second optical path to the replay plane. The length of the first part of the first optical path is not equal to the length of the first part of the second optical path. The first part of the first optical path may he substantially collinear with the first part of the second optical path.
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公开(公告)号：US11644793B2
公开(公告)日：2023-05-09
申请号：US16843544
申请日：2020-04-08
申请人： Dualitas Ltd.
发明人： Ricardo Gomes , Pedro Moreira , Alexander Cole
CPC分类号： G03H1/32 , G02B5/02 , G02B7/00 , G02B5/0263 , G03H2223/14
摘要： There is described herein a diffuser assembly comprising a leaf spring, diffuser and at least one actuator. The leaf spring is arranged as a rectangular frame having a width, x, and height, y. The diffuser is suspended by the frame such as within the frame. The at least one actuator arranged to move, such as translate, the diffuser. The assembly is arranged such that the leaf spring provides in-plane (x-y plane) stiffness, kx and ky, less than the out-of-plane (z-direction) stiffness, kz.
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公开(公告)号：US11740456B2
公开(公告)日：2023-08-29
申请号：US16824213
申请日：2020-03-19
申请人： Dualitas Ltd
发明人： Jamieson Christmas , Alexander Cole
CPC分类号： G02B27/0103 , G03H1/16 , G03H1/2205 , G03H1/2294 , G03H2225/32 , G03H2225/52
摘要： There is provided a holographic projector comprising a spatial light modulator, a light source and an assembly. The spatial light modulator is arranged to display a hologram. The light source is arranged to illuminate at least one region of the spatial light modulator with an input beam such that the input beam is spatially modulated by the spatial light modulator in accordance with the hologram to form a holographic reconstruction. The assembly is arranged to move at least one of the input beam and the spatial light modulator relative to the other.
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公开(公告)号：US11256215B2
公开(公告)日：2022-02-22
申请号：US16112153
申请日：2018-08-24
申请人： Dualitas Ltd
发明人： Alexander Cole , Jamieson Christmas
摘要： A display system and a method of adjusting a display system are disclosed. A first plurality of pixels is arranged to display a first hologram, receive light of a first wavelength, and output spatially-modulated light according to the first hologram, along a first optical path. A first Fourier transform lens on the first optical path forms a first holographic reconstruction at a replay plane. A second plurality of pixels is arranged to display a second hologram, receive light of a second wavelength, and output spatially modulated light according to the second hologram, along a second optical path. A second Fourier transform lens on the second optical path forms a second holographic reconstruction at the replay plane. A first optical element on the first optical path is arranged to receive the output light from a first part of the first optical path and direct it along a second part of the first optical path to the replay plane. A second optical element on the second optical path is arranged to receive the output light of the second wavelength from a first part of the second optical path and direct it along a second part of the second optical path to the replay plane. The length of the first part of the first optical path is not equal to the length of the first part of the second optical path. The first part of the first optical path may he substantially collinear with the first part of the second optical path.
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