公开(公告)号：US12013533B2

公开(公告)日：2024-06-18

申请号：US17367703

申请日：2021-07-06

Applicant: Envisics Ltd

Inventor： Jamieson Christmas ,  Dackson Masiyano

IPC: G02B27/01 ,  G03H1/08 ,  G03H1/16 ,  G03H1/22 ,  G03H1/30 ,  G06T5/20 ,  G06T11/60 ,  H04N9/31

CPC classification number: G02B27/0103 ,  G03H1/0808 ,  G03H1/0841 ,  G03H1/16 ,  G03H1/2205 ,  G03H1/2294 ,  G06T5/20 ,  G06T11/60 ,  H04N9/3185 ,  G02B2027/0107 ,  G02B2027/0109 ,  G02B2027/011 ,  G02B2027/013 ,  G02B2027/014 ,  G03H2001/0816 ,  G03H2001/0825 ,  G03H2001/0833 ,  G03H2001/085 ,  G03H2001/221 ,  G03H2001/2218 ,  G03H2001/2242 ,  G03H2001/2271 ,  G03H2001/2284 ,  G03H2001/306 ,  G03H2223/14 ,  G03H2225/32 ,  G03H2225/60 ,  G03H2225/61 ,  G03H2226/05 ,  G06T2207/10016 ,  G06T2207/10024

Abstract: There is provided a method of projection using an optical element (502,602) having spatially variant optical power. The method comprises combining Fourier domain data representative of a 2D image with Fourier domain data having a first lensing effect (604a) to produce first holographic data. Light is spatially modulated (504,603a) with the first holographic data to form a first spatially modulated light beam. The first spatially modulated light beam is redirected using the optical element (502,602) by illuminating a first region (607) of the optical element (602) with the first spatially modulated beam. The first lensing effect (604a) compensates for the optical power of the optical element in the first region (607). Advantageous embodiments relate to a head-up display for a vehicle using the vehicle windscreen (502,602) as an optical element to redirect light to the viewer (505,609).

公开(公告)号：US11914251B2

公开(公告)日：2024-02-27

申请号：US17711207

申请日：2022-04-01

Applicant: SEEREAL TECHNOLOGIES S.A.

Inventor： Bo Kroll ,  Norbert Leister ,  Gerald Futterer ,  Robert Missbach ,  Stephan Reichelt

IPC: G02F1/1343 ,  G02B30/00 ,  G02B30/20 ,  G02F1/1347 ,  G02F1/29 ,  G03H1/02 ,  G03H1/22 ,  G02F1/1335 ,  G03H1/26

CPC classification number: G02F1/134309 ,  G02B30/00 ,  G02B30/20 ,  G02F1/1347 ,  G02F1/292 ,  G03H1/02 ,  G03H1/2205 ,  G03H1/2294 ,  G02F1/133504 ,  G02F1/134318 ,  G02F2203/24 ,  G03H2001/0224 ,  G03H2001/2615 ,  G03H2001/264 ,  G03H2225/11 ,  G03H2225/23 ,  G03H2225/55 ,  G03H2225/60 ,  Y10T29/49155

Abstract: The invention relates to a light modulation device for a display for representing two- and/or three-dimensional image content or image sequences. The light modulation device comprises a light modulator and a controller. The phase and/or the amplitude of a light wave field, which is substantially collimated, can be varied by means of the light modulator depending on the location of the light modulator. The light modulator can be actuated by means of the control device. According to the invention, in the direction of propagation of the light wave field, at least one diffracting unit is arranged downstream of the light modulator. The diffracting unit has a variable diffracting structure. By means of the diffracting structure, the light wave field varied by the light modulator can be diffracted in a variable and predeterminable manner. Further, the present invention relates to a display and a method for producing a light modulation device.

公开(公告)号：US20230384735A1

公开(公告)日：2023-11-30

申请号：US18325706

申请日：2023-05-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jeho NAM

IPC: G03H1/04

CPC classification number: G03H1/0486 ,  G03H2225/34 ,  G03H2225/60 ,  G03H2001/0491

Abstract: There is provided an apparatus and method for generating a hologram through measuring intensity and a phase of a complex light wavefront that is output from a complex modulation spatial light modulator (SLM); determining characteristic information of the complex light wavefront by analyzing the measured intensity and phase of the complex light wavefront; creating distortion correction information for correcting distortion of the complex light wavefront from an artificial neural network by inputting the characteristic information to the artificial neural network; and feeding back the distortion correction information to the complex modulation SLM.

公开(公告)号：US11762334B2

公开(公告)日：2023-09-19

申请号：US17509810

申请日：2021-10-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jungkwuen An ,  Hoon Song ,  Sunil Kim ,  Hongseok Lee ,  Joonyong Park ,  Chilsung Choi

IPC: G03H1/22 ,  G03H1/00 ,  G03H1/08 ,  G03H1/28

CPC classification number: G03H1/2294 ,  G03H1/0005 ,  G03H1/0866 ,  G03H1/2205 ,  G03H1/2286 ,  G03H1/28 ,  G03H2001/0088 ,  G03H2001/0883 ,  G03H2001/221 ,  G03H2001/2223 ,  G03H2001/2292 ,  G03H2223/00 ,  G03H2225/12 ,  G03H2225/60 ,  G03H2226/00

Abstract: Provided are holographic displays and operating methods of the holographic display. The holographic display includes a backlight portion configured to emit light for displaying an image; a deflector configured to control a direction at which the image is displayed; a lens portion configured to control a location where the image to be displayed is formed to match a location that satisfies a diffraction condition; and a panel portion configured to display a 3D image by combining the image to be displayed with an interference pattern generated with respect to an overlapped hologram.

公开(公告)号：US20190219889A1

公开(公告)日：2019-07-18

申请号：US16239286

申请日：2019-01-03

Applicant: Thomas Swan & Co. Ltd.

Inventor： Melanie Holmes

IPC: G02F1/313 ,  G02B26/06 ,  G02B5/32 ,  G02B6/26 ,  G02B6/293 ,  G02B6/35 ,  G02F1/31 ,  G03H1/00 ,  G03H1/08 ,  G03H1/22 ,  H04J14/02 ,  H04J14/08 ,  H04Q11/00 ,  G02F1/13 ,  G03H1/26 ,  G03H1/04 ,  G02F1/01 ,  G02F1/1335 ,  G02F1/29 ,  G02B26/08 ,  G03H1/02

CPC classification number: G02F1/3132 ,  G02B5/32 ,  G02B6/266 ,  G02B6/29311 ,  G02B6/29314 ,  G02B6/2938 ,  G02B6/29391 ,  G02B6/3512 ,  G02B6/3534 ,  G02B6/3548 ,  G02B6/3556 ,  G02B26/06 ,  G02B26/0808 ,  G02B26/0833 ,  G02F1/01 ,  G02F1/1326 ,  G02F1/13342 ,  G02F1/1335 ,  G02F1/29 ,  G02F1/31 ,  G02F2001/291 ,  G02F2201/30 ,  G02F2201/34 ,  G02F2203/12 ,  G02F2203/28 ,  G02F2203/50 ,  G03H1/0005 ,  G03H1/02 ,  G03H1/04 ,  G03H1/08 ,  G03H1/0866 ,  G03H1/0891 ,  G03H1/2286 ,  G03H1/2294 ,  G03H1/26 ,  G03H2001/0224 ,  G03H2001/0491 ,  G03H2001/261 ,  G03H2001/264 ,  G03H2222/13 ,  G03H2222/32 ,  G03H2223/23 ,  G03H2225/32 ,  G03H2225/52 ,  G03H2225/60 ,  G03H2226/02 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/022 ,  H04J14/08 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0028 ,  H04Q2011/0039

Abstract: A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments to compensate for wavelength differences and alignment tolerances in an optical system. An optical device is arranged to receive a multiplex of many optical signals at different wavelengths, to separate the optical signals into at least two groups, and to process at least one of the groups adaptively.

公开(公告)号：US20180181065A1

公开(公告)日：2018-06-28

申请号：US15819485

申请日：2017-11-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jungkwuen An ,  Hoon Song ,  Sunil Kim ,  Hongseok Lee ,  Joonyong Park ,  Chilsung Choi

IPC: G03H1/22 ,  G03H1/00 ,  G03H1/08 ,  G03H1/28

CPC classification number: G03H1/2294 ,  G03H1/0005 ,  G03H1/0866 ,  G03H1/2205 ,  G03H1/2286 ,  G03H1/28 ,  G03H2001/0088 ,  G03H2001/0883 ,  G03H2001/221 ,  G03H2001/2223 ,  G03H2001/2292 ,  G03H2225/12 ,  G03H2225/60

Abstract: Provided are holographic displays and operating methods of the holographic display. The holographic display includes a backlight portion configured to emit light for displaying an image; a deflector configured to control a direction at which the image is displayed; a lens portion configured to control a location where the image to be displayed is formed to match a location that satisfies a diffraction condition; and a panel portion configured to display a 3D image by combining the image to be displayed with an interference pattern generated with respect to an overlapped hologram.

公开(公告)号：US10001748B2

公开(公告)日：2018-06-19

申请号：US14697166

申请日：2015-04-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Wontaek Seo ,  Sunil Kim ,  Hongseok Lee

IPC: G03H1/22 ,  G03H1/02

CPC classification number: G03H1/2294 ,  G03H1/2202 ,  G03H1/2286 ,  G03H2001/0212 ,  G03H2001/0224 ,  G03H2001/2236 ,  G03H2001/2239 ,  G03H2001/2242 ,  G03H2222/50 ,  G03H2225/10 ,  G03H2225/60

Abstract: A holography reproducing apparatus and a holography reproducing method are provided. The holography reproducing apparatus includes: a backlight configured to emit light, and a spatial light modulator configured to modulate light input from the backlight and transmit the modulated light to generate a transmissive hologram image, wherein at least one of a wave front of light emitted from the backlight and the spatial light modulator has a curved surface.

公开(公告)号：US20180095292A1

公开(公告)日：2018-04-05

申请号：US15833393

申请日：2017-12-06

Applicant: Dai Nippon Printing Co., Ltd.

Inventor： Makio Kurashige ,  Kazutoshi Ishida ,  Tomoe Takanokura ,  Yasuyuki Ooyagi

IPC: G02B27/48 ,  H04N9/31 ,  G02B5/32 ,  G02B26/10 ,  G03H1/32 ,  G03H1/22 ,  G03B21/20 ,  G03H1/00

CPC classification number: G02B27/48 ,  G02B5/32 ,  G02B26/10 ,  G02B26/101 ,  G03B21/2013 ,  G03B21/2033 ,  G03B21/2046 ,  G03B21/208 ,  G03H1/0005 ,  G03H1/22 ,  G03H1/2286 ,  G03H1/32 ,  G03H2222/36 ,  G03H2225/60 ,  H04N9/3129 ,  H04N9/3147

Abstract: An illumination device includes an optical element including a hologram recording medium capable of diffusing a coherent light beam, the hologram recording medium comprising a plurality of regions, each region diffusing a coherent light beam to an illuminated region corresponding to that region, and an irradiation device configured to irradiate the optical element with the coherent light beam so as to allow the coherent light beam to scan the hologram recording medium. The coherent light beam incident to a position existing in each region of the hologram recording medium is diffused to an entire region of the illuminated region corresponding to the region in order to illuminate the entire region of the illuminated region.

公开(公告)号：US20180074457A1

公开(公告)日：2018-03-15

申请号：US15658388

申请日：2017-07-24

Applicant: Massachusetts Institute of Technology

Inventor： Sundeep Jolly ,  Nickolaos Savidis ,  V. Michael Bove, JR. ,  Bianca Datta ,  Daniel E. Smalley

IPC: G03H1/02 ,  F21V8/00 ,  G02B27/01 ,  G02F1/33 ,  G02F1/335 ,  G02B5/32 ,  G03H1/00 ,  G03H1/26

CPC classification number: G03H1/0248 ,  G02B5/32 ,  G02B6/0016 ,  G02B6/005 ,  G02B6/0078 ,  G02B6/34 ,  G02B27/0172 ,  G02B2027/0123 ,  G02B2027/014 ,  G02B2027/015 ,  G02B2027/0174 ,  G02F1/332 ,  G02F1/335 ,  G02F2201/124 ,  G02F2201/307 ,  G02F2202/20 ,  G02F2203/07 ,  G03H1/0005 ,  G03H1/2286 ,  G03H1/2645 ,  G03H2001/0088 ,  G03H2223/16 ,  G03H2223/23 ,  G03H2223/24 ,  G03H2225/21 ,  G03H2225/60 ,  G03H2226/02 ,  G03H2227/02

Abstract: A holographic display is comprised of space-multiplexed elemental modulators, each of which consists of a surface acoustic wave transducer atop an anisotropic waveguide. Each “line” of the overall display consists of a single anisotropic waveguide across the display's length with multiple surface acoustic wave transducers spaced along the waveguide length, although for larger displays, the waveguide may be divided into segments, each provided with separate illumination. Light that is undiffracted by a specific transducer is available for diffraction by subsequent transducers. Per transducer, guided-mode light is mode-converted to leaky-mode light, which propagates into the substrate away from the viewer before encountering a volume reflection grating and being reflected and steered towards the viewer. The display is transparent and all reflection volume gratings operate in the Bragg regime, thereby creating no dispersion of ambient light.

公开(公告)号：US20180067456A1

公开(公告)日：2018-03-08

申请号：US15691802

申请日：2017-08-31

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yuxin ZHANG ,  Yongda MA

IPC: G03H1/26

CPC classification number: G03H1/268 ,  G03H1/2286 ,  G03H1/2294 ,  G03H2001/2242 ,  G03H2001/262 ,  G03H2222/13 ,  G03H2222/34 ,  G03H2223/19 ,  G03H2225/60 ,  G03H2226/05

Abstract: The present disclosure provides a hologram display device and a display method thereof. The hologram display device includes an imaging unit including a plurality of imaging regions, wherein each imaging region forms a hologram image independently; a light source unit including a plurality of light sources arranged in an array, wherein each light source provides light to the imaging unit; an eye tracking unit that determines positions of both eyes of a viewer; and a controller that controls at least a part of the light sources and at least a part of the imaging regions to be turned on to perform hologram display according to the positions of both eyes of the viewer, so that light emitted from a turned-on light source passes through a turned-on imaging region and then irradiates towards the positions of both eyes of the viewer.