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公开(公告)号：EP4433877A1
公开(公告)日：2024-09-25
申请号：EP22813544.8
申请日：2022-11-07
Applicant: Opticalp, SCOP SAS
Inventor： RENAUD-GOUD, Philippe
IPC: G03H1/22 , G03H1/00 , G02F1/1347
CPC classification number: G03H2225/1220130101 , G03H2225/3220130101 , G03H2223/1720130101 , G03H1/2294 , G03H2225/2120130101 , G03H2225/2420130101 , G03H2225/5220130101 , G03H2225/6020130101 , G03H2225/2220130101 , G02F1/13471
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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
Applicant: Envisics Ltd.
Inventor： CHRISTMAS, Jamieson
CPC classification number: 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
Abstract: 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：EP4413425A1
公开(公告)日：2024-08-14
申请号：EP22793438.7
申请日：2022-10-06
Applicant: VividQ Limited
Inventor： NEWMAN, Alfred James , SULLIVAN, Darius Martin
CPC classification number: G03H2001/223920130101 , G03H2001/224220130101 , G03H1/2294 , G03H2223/1620130101 , G03H1/0808 , G03H1/2205 , G02B27/0172 , G02B27/0081 , G03H2001/228420130101 , G02B2027/012720130101 , G02B27/4272
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公开(公告)号：EP4411488A1
公开(公告)日：2024-08-07
申请号：EP23214536.7
申请日：2023-12-06
Applicant: Envisics Ltd.
Inventor： DE ECHANIZ, Sebastian
CPC classification number: G03H1/0808 , G03H1/2294 , G03H2001/220720130101 , G03H2001/224720130101 , G03H2001/081620130101 , G03H1/2202
Abstract: There is provided a method of calibrating a holographic projector. The method comprises displaying a primary diffractive pattern on a display device, wherein the primary diffractive pattern comprises a first hologram of a first target image and a phase-ramp function. The method further comprises illuminating the primary diffractive pattern to form a first holographic reconstruction of the first target image on a replay plane. The first target image comprises a picture area and a non-picture area. The phase-ramp function is arranged to translate the first holographic reconstruction. The method further comprises blocking at least a portion of the first holographic reconstruction using a mask, wherein the mask is arranged to block the non-picture area in the absence of the phase-ramp function. The method further comprises measuring a property of a boundary between the picture area and the non-picture area. There is further provided a holographic projection system.
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公开(公告)号：EP4398044A1
公开(公告)日：2024-07-10
申请号：EP23214528.4
申请日：2023-12-06
Applicant: Envisics Ltd.
Inventor： XIA, Yiren , SMEETON, Timothy
CPC classification number: G02B27/0103 , G02B2027/012520130101 , G03H1/2205 , G03H2001/220720130101 , G03H2001/228420130101 , G03H1/2294 , G03H2223/1620130101 , G03H2223/2320130101 , G03H2223/1220130101 , G03H2001/224220130101
Abstract: A holographic projector comprising a waveguide comprising a pair of opposing reflective surfaces arranged to receive and waveguide a hologram/holographic wavefront therebetween. A first surface of the pair of complementary surfaces is partially reflective-partially transmissive such that a plurality of replicas of the hologram/holographic wavefront are emitted therefrom. The holographic projector further comprises a diffractive optical element arranged to receive the plurality of replicas of the hologram/holographic wavefront from the first surface of the waveguide and principally redirect each replica into a respective non-zero diffractive order defined by a diffraction angle. The holographic projector further comprises an array of louvres arranged to receive the hologram/holographic wavefront from the diffractive optical element, wherein the array of louvres is substantially transmissive at the non-zero diffraction angle and substantially non-transmissive at a zeroth diffraction angle of the diffractive optical element.
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6.发明公开
公开(公告)号：EP4370061A1
公开(公告)日：2024-05-22
申请号：EP22746982.2
申请日：2022-07-06
Applicant: Carl Zeiss Meditec AG
Inventor： SCHARSICH, Christina , GERLACH, Mario
CPC classification number: A61F2/1659 , A61F2250/000120130101 , A61F2250/000220130101 , G03H1/2294 , G03H2001/228420130101 , G02B27/0172 , G03H2226/0520130101 , G03H2226/0420130101 , G03H2223/1620130101 , G03H2223/1720130101 , G03H2223/1220130101 , G02F1/13324
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公开(公告)号：EP3400472A1
公开(公告)日：2018-11-14
申请号：EP17736516.0
申请日：2017-01-09
Applicant: Magic Leap, Inc.
Inventor： GRATA, Jeremy A. , JIA, Zhiheng
CPC classification number: G03H1/2294 , G02B27/017 , G02B27/0944 , G02B2027/0127 , G02B2027/014 , G02B2027/0178 , G03H1/08 , G03H1/2205 , G03H2001/2297 , G03H2001/2655 , G03H2210/452 , G03H2223/16 , G03H2223/23 , G03H2225/32 , G03H2225/61 , H04N9/3138 , H04N13/344 , H04N13/395
Abstract: A system for generating multi-depth image sequence comprising a modulation array. The modulation array comprising a plurality of light modulators which may shift light incident upon the modulators by a number of degrees. The plurality of light modulators may shift light in concert according to a modulation shift pattern. The modulation shift pattern can be configured to focus incident light to a voxel or to form a 3-D image. One or more modulation shift patterns can be changed or cycled through to raster one or more image objects in one or more image depth planes.
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公开(公告)号：EP2562595B1
公开(公告)日：2018-10-31
申请号：EP12181226.7
申请日：2012-08-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Han, Seung-hoon , Maeng, Wan-joo
CPC classification number: G02F1/335 , G02B27/225 , G02F2202/32 , G03H1/02 , G03H1/2294 , G03H2001/2292 , G03H2225/21
Abstract: An acousto-optic device (10) having a wide range of diffraction angles and an optical scanner, a light modulator, and a display apparatus using the acousto-optic device are provided. The acousto-optic device (10) includes a core layer (11) having a periodic photonic crystal structure in which unit cells of predetermined patterns are repeated, a first clad layer (12) on a first surface of the core layer (11), the first clad layer (12) having a refractive index that is different from the refractive index of the core layer, a second clad layer (13) on a second surface of the core layer (11), the second surface being opposite the first surface, the second clad layer (13) having a refractive index that is different from the refractive index of the core layer, and a sound wave generator (14, 15, 16) configured to apply surface acoustic waves (SAW) to the core layer, the first clad layer, the second clad layer, or any combination thereof.
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9.发明公开
公开(公告)号：EP3327513A1
公开(公告)日：2018-05-30
申请号：EP16787707.5
申请日：2016-01-14
Applicant: BOE Technology Group Co., Ltd.
Inventor： WU, Naifu , NIU, Bei , WANG, Tao , WEI, Wei , WU, Kun , LIN, Chia Chiang , ZHOU, Chunmiao
CPC classification number: G03H1/2294 , G02B26/0833 , G03H1/02 , G03H1/0841 , G03H2001/0224 , G03H2001/0858 , G03H2001/2297 , G03H2223/19 , G03H2223/50 , G03H2225/24 , G03H2225/32 , G03H2225/33 , G03H2227/03
Abstract: A spatial light modulator and a method for displaying a computer generated hologram using the spatial light modulator and configured for displaying a dynamic computer generated hologram in a large area are disclosed. The spatial light modulator includes a plurality of MEMS units (20) arranged in an array, each of the MEMS units (20) corresponds to a pixel of a computer generated hologram and includes a sensing device (201), a light shielding portion (202) and a driving device (203). The sensing device (201) is configured for receiving position information that is obtained through Roman encoding a pixel corresponding to an MEMS unit including the sensing device (201) by a computer, the position information is position information of the light shielding portion (202) when a present frame is displayed, and the position information is transmitted to the driving device (203) by the sensing device (201). The driving device (203) is configured for controlling the light shielding portion (202) to move to a position corresponding to the position information of the light shielding portion (202) when the present frame is displayed in response to the received position information of the light shielding portion (202) when the present frame is displayed.
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公开(公告)号：EP3314324A1
公开(公告)日：2018-05-02
申请号：EP16745234.1
申请日：2016-06-24
Applicant: Microsoft Technology Licensing, LLC
Inventor： KOLLIN, Joel S. , GEORGIOU, Andreas , TRAVIS, Adrian , BURGER, Douglas Christopher
IPC: G02B27/01
CPC classification number: G09G5/391 , G02B27/0093 , G02B27/0172 , G02B2027/0123 , G02B2027/0174 , G02B2027/0178 , G03H1/0005 , G03H1/2294 , G03H2225/32 , G03H2225/52 , G03H2225/60 , G03H2226/05 , G03H2227/02 , G03H2270/55 , G06T3/4038 , G09G2340/0407 , G09G2354/00
Abstract: Embodiments are disclosed for display devices including holographic optical elements for directing light toward image producing panels. An example display device includes a phase modulating image producing panel, and a holographic optical element configured to receive collimated light and to output converging light toward the phase modulating image producing panel, the phase modulating image producing panel being configured to use at least a portion of the converging light to produce an image with collimated or diverging light.
