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公开(公告)号：US20230280692A1
公开(公告)日：2023-09-07
申请号：US17587561
申请日：2022-01-28
发明人： Okan Ersoy
CPC分类号： G03H1/0808 , G03H1/16 , G03H1/0443 , G03H2001/0816 , G03H2223/13 , G03H2223/19 , G03H2240/51
摘要： A totagram is produced by an iterative spectral phase recovery process resulting in complete information recovery using special masks and using a reference beam. Using these special masking systems reduce computation time, number of masks, and number of iterations. Adding a reference wave to the iterative process provides better phase recovery systems and aid in the preventing of phase wrapping. The reference wave is added on-axis to provide a well-controlled amplitude. The reference wave is added after the physical or digital transformation system and subtracted before recording the initial amplitude. An additional camera at the input plane records the amplitudes of the original input wave which are used during the iterative process.
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公开(公告)号：US09135847B2
公开(公告)日：2015-09-15
申请号：US13988197
申请日：2012-10-18
CPC分类号： G09G3/02 , G02B5/1842 , G02B26/0808 , G02B27/2271 , G03H1/2286 , G03H1/2294 , G03H2222/18 , G03H2240/51 , G09G3/3611 , G09G2320/0233 , G09G2320/0626 , G09G2320/0646 , G09G2360/16
摘要： An image display apparatus, including: a light source which emits coherent light; a spatial modulation element which diffracts the coherent light by displaying a diffraction grating pattern corresponding to an input image and which displays a virtual image by the diffracted light; and a control unit which calculates a total brightness representing a sum total of brightnesses of all pixels of the input image, and controls at least one of the light source and the spatial modulation element in such a manner that, if the total brightness has decreased, the virtual image is displayed at a lower brightness than a reference virtual image displayed when the input image is used directly.
摘要翻译： 一种图像显示装置，包括：发出相干光的光源; 空间调制元件，其通过显示与输入图像相对应的衍射光栅图案衍射相干光，并且通过衍射光显示虚像; 以及控制单元，其计算表示输入图像的所有像素的亮度的总和的总亮度，并且以这样的方式控制光源和空间调制元件中的至少一个，使得如果总亮度降低， 虚拟图像以比直接使用输入图像时显示的参考虚拟图像低的亮度显示。
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公开(公告)号：US08654048B2
公开(公告)日：2014-02-18
申请号：US11453332
申请日：2006-06-14
申请人： Neil Collings , Timothy Wilkinson , William Crossland , Edward Buckley , Adrian Cable , Nicholas Lawrence , Peter Mash
发明人： Neil Collings , Timothy Wilkinson , William Crossland , Edward Buckley , Adrian Cable , Nicholas Lawrence , Peter Mash
IPC分类号： G09G3/36 , G09G3/18 , G02F1/1335 , G03H1/08 , G02B5/32
CPC分类号： G03H1/2645 , G03H1/0808 , G03H1/0841 , G03H1/2205 , G03H1/2249 , G03H1/2286 , G03H1/2294 , G03H2001/0816 , G03H2001/085 , G03H2001/2215 , G03H2001/2218 , G03H2001/2231 , G03H2001/2255 , G03H2001/2271 , G03H2001/2297 , G03H2001/261 , G03H2001/306 , G03H2210/20 , G03H2210/30 , G03H2210/40 , G03H2210/454 , G03H2222/35 , G03H2223/13 , G03H2223/55 , G03H2225/25 , G03H2225/31 , G03H2225/32 , G03H2225/52 , G03H2225/55 , G03H2225/60 , G03H2225/61 , G03H2226/02 , G03H2240/41 , G03H2240/42 , G03H2240/51
摘要： A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam.
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4.发明授权Hologram recording medium, hologram recording apparatus and method, and computer program 失效全息记录介质，全息记录装置和方法以及计算机程序公开(公告)号：US08254003B2
公开(公告)日：2012-08-28
申请号：US13079813
申请日：2011-04-05
申请人： Takeshi Koda , Nobuyuki Takakuwa , Yasuko Fukuda , Kazuo Kuroda
发明人： Takeshi Koda , Nobuyuki Takakuwa , Yasuko Fukuda , Kazuo Kuroda
IPC分类号： G03H1/28
CPC分类号： G11B7/0065 , G03H1/26 , G03H2001/2655 , G03H2240/51 , G03H2260/12 , G11B7/00781 , G11B7/083 , G11B7/24044
摘要： A hologram recording apparatus (300) is provided with: a recording device (100) for recording record information into a hologram recording medium (1); a measuring device (325) for measuring a time elapsed from when the recording of the record information is stopped to when the recording of the record information is restarted; a first controlling device (354) for controlling the recording device to multiplex-record the record information, if the measured elapsed time is shorter than a time length in which the record information can be multiplex-recorded; and a second controlling device (354) for controlling the recording device not to multiplex-record the record information, if the measured elapsed time is longer than the time length in which the record information can be multiplex-recorded.
摘要翻译： 全息记录装置（300）具备：将记录信息记录到全息记录介质（1）中的记录装置（100）。 测量装置（325），用于测量从记录信息停止的记录到重新开始记录信息的记录时间; 如果所测量的经过时间短于记录信息可被多路复用记录的时间长度，则控制记录装置多路复用记录信息的第一控制装置（354） 以及第二控制装置（354），用于控制记录装置不复用记录记录信息，如果所测量的经过时间长于可记录记录信息的时间长度。
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公开(公告)号：US08072488B2
公开(公告)日：2011-12-06
申请号：US10582678
申请日：2004-12-15
申请人： Adrian James Cable , Edward Buckley
发明人： Adrian James Cable , Edward Buckley
CPC分类号： G03H1/2645 , G03H1/0808 , G03H1/0841 , G03H1/2205 , G03H1/2249 , G03H1/2286 , G03H1/2294 , G03H2001/0816 , G03H2001/085 , G03H2001/2215 , G03H2001/2218 , G03H2001/2231 , G03H2001/2255 , G03H2001/2271 , G03H2001/2297 , G03H2001/261 , G03H2001/306 , G03H2210/20 , G03H2210/30 , G03H2210/40 , G03H2210/454 , G03H2222/35 , G03H2223/13 , G03H2223/55 , G03H2225/25 , G03H2225/31 , G03H2225/32 , G03H2225/52 , G03H2225/55 , G03H2225/60 , G03H2225/61 , G03H2226/02 , G03H2240/41 , G03H2240/42 , G03H2240/51
摘要： The invention relates to a method of and apparatus for displaying a holographically generated video image having plural video frames. For each frame there is provided and computed (20) a respective sequential plurality of holograms. Each said sequential plurality of holograms of the plural video frames are sequentially displayed on a diffractive element (12) for viewing the replay field thereof, and the noise variance of each frame is perceived as attenuated by averaging across said plurality of holograms.
摘要翻译： 本发明涉及用于显示具有多个视频帧的全息产生的视频图像的方法和装置。 对于每个帧，提供并计算（20）相应的顺序多个全息图。 多个视频帧中的每个所述顺序多个全息图被顺序地显示在用于观看其重放场的衍射元件（12）上，并且通过在所述多个全息图之间平均化，每个帧的噪声方差被感知为衰减。
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6.发明授权Hologram recording medium, hologram recording apparatus and method, and computer program 失效全息记录介质，全息记录装置和方法以及计算机程序公开(公告)号：US07936491B2
公开(公告)日：2011-05-03
申请号：US12091154
申请日：2006-10-24
申请人： Takeshi Koda , Nobuyuki Takakuwa , Yasuko Fukuda , Kazuo Kuroda
发明人： Takeshi Koda , Nobuyuki Takakuwa , Yasuko Fukuda , Kazuo Kuroda
IPC分类号： G03H1/28
CPC分类号： G11B7/0065 , G03H1/26 , G03H2001/2655 , G03H2240/51 , G03H2260/12 , G11B7/00781 , G11B7/083 , G11B7/24044
摘要： A hologram recording apparatus (300) is provided with: a recording device (100) for recording record information into a hologram recording medium (1); a measuring device (325) for measuring a time elapsed from when the recording of the record information is stopped to when the recording of the record information is restarted; a first controlling device (354) for controlling the recording device to multiplex-record the record information, if the measured elapsed time is shorter than a time length in which the record information can be multiplex-recorded; and a second controlling device (354) for controlling the recording device not to multiplex-record the record information, if the measured elapsed time is longer than the time length in which the record information can be multiplex-recorded.
摘要翻译： 全息记录装置（300）具备：将记录信息记录到全息记录介质（1）中的记录装置（100）。 测量装置（325），用于测量从记录信息停止的记录到重新开始记录信息的记录时间; 如果所测量的经过时间短于记录信息可被多路复用记录的时间长度，则控制记录装置多路复用记录信息的第一控制装置（354） 以及第二控制装置（354），用于控制记录装置不复用记录记录信息，如果所测量的经过时间长于可记录记录信息的时间长度。
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7.发明授权公开(公告)号：US07859972B2
公开(公告)日：2010-12-28
申请号：US11885259
申请日：2006-03-01
IPC分类号： G11B7/00
CPC分类号： G11B7/0065 , G03H1/22 , G03H1/2286 , G03H2240/51 , G11B7/005 , G11B7/00772 , G11B7/126
摘要： A holographic optical information recording/reproducing device is provided with a laser light source 1 and a polarizing beam splitter 8 for splitting a light from the laser light source 1. At the time of recording information, one of light beams split by the polarizing beam splitter 8 is modulated by a spatial light modulating element 2 to form a beam array, which becomes a signal light 25, whereas the other split light beam becomes a reference light 22. Interference fringes generated by the signal light 25 and the reference light 22 are recorded as holograms in a holographic disc 5. At the time of reproducing the information, only the reference light 22 is irradiated to the holographic disc 5 and its diffracted light is detected. At this time, the holographic optical information recording/reproducing device makes the power of the reference light 22 in the holographic disc 5 for information reproduction larger than a sum of the power of the reference light 22 and the power of the signal light 25 in the holographic disc 5 for information recording.
摘要翻译： 全息光信息记录/再现装置设置有用于分离来自激光光源1的光的激光光源1和偏振光束分离器8.在记录信息时，由偏振分束器 8被空间光调制元件2调制以形成成为信号光25的光束阵列，而另一个分束光束变为参考光22.由信号光25和参考光22产生的干涉条纹被记录 作为全息光盘5中的全息图。在再现信息时，仅将参考光22照射到全息光盘5，并检测其衍射光。 此时，全息光信息记录/再现装置使信息再现的全息光盘5中的参考光22的功率大于参考光22的功率和信号光25的功率之和 全息光盘5用于信息记录。
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公开(公告)号：US20090128876A1
公开(公告)日：2009-05-21
申请号：US12356992
申请日：2009-01-21
申请人： Kazushi Uno , Koichi Tezuka , Hiroyasu Yoshikawa
发明人： Kazushi Uno , Koichi Tezuka , Hiroyasu Yoshikawa
IPC分类号： G03H1/04
CPC分类号： G11B7/1374 , G03H1/04 , G03H2240/51 , G03H2240/52 , G11B7/0065 , G11B7/1392
摘要： A hologram recording device records holograms by interference between an recording beam and a reference beam. The device includes an objective lens exhibiting a predetermined aberration. It is supposed that the laser beam applied to the beam splitter has an light intensity of 1, the recording beam and the reference beam emitted from the beam splitter have light intensities of P and 1−P, respectively, the optical magnification for the recording beam traveling from the beam splitter to the objective lens is a, and N pixels are used for modulation of the recording beam in the spatial light modulator. When the recording beam at the predetermined region has an amplitude 1/k times the amplitude of the reference beam, and the amplitude of the recording beam is X times as great as when there is no aberration, the predetermined aberration of the objective lens is determined to satisfy the formula: 0
摘要翻译： 全息记录装置通过记录光束和参考光束之间的干涉来记录全息图。 该装置包括具有预定像差的物镜。 假设施加到分束器的激光束的光强度为1，从分束器发射的记录光束和参考光束分别具有P和1-P的光强度，记录光束的光学倍率 从分束器传播到物镜是a，并且N个像素用于调制空间光调制器中的记录光束。 当预定区域的记录光束具有参考光束的振幅的1 / k倍的幅度，并且记录光束的幅度是当不存在像差时的X倍，所以确定物镜的预定像差 满足以下公式：
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公开(公告)号：US20020097457A1
公开(公告)日：2002-07-25
申请号：US10079371
申请日：2002-02-20
发明人： Tomoyuki Kanda , Kazutoshi Koie , Katsuyoshi Nishii , Masahiro Shiozawa , Katsumi Kamiya , Atsuo Ishizuka , Kenichiro Takada
IPC分类号： G02B005/32
CPC分类号： G02B5/32 , G03H1/0256 , G03H1/04 , G03H1/0404 , G03H1/0486 , G03H1/22 , G03H1/265 , G03H1/28 , G03H2001/2239 , G03H2001/306 , G03H2223/14 , G03H2240/51 , G03H2240/53 , G03H2250/32 , G03H2260/10 , H04N7/144
摘要： A method for producing a hologram recording an interference fringe formed by an object light and a reference light on a photosensitive dry plate, and the object light either having diffusing and scattering characteristics or being passed through an optical diffusion body, mainly includes the following steps: In a first step, a ratio nullR0/null00 of a first diffraction efficiency null00 and a second diffraction efficiency nullR0, is calculated. The diffraction efficiency null00 is dependent on two object light beams. The efficiency nullR0 is dependent on the object light and the reference light. In a second step, the intensity E0 of the object light and the intensity ER of the reference light is adjusted in such a way that the ratio nullR0/null00 is set to at least 10 and the efficiency null00 does not exceed 5%. A display device using the above hologram is structured by a display unit for generating a signal light; a hologram screen formed by either reflection or transmission hologram, and a projecting unit for projecting the signal light to the hologram screen. According to the present invention, it is possible to easily produce a hologram, for example, a screen hologram, having no cloudiness or cloudy state when an observer observes an image displayed on the screen, and to a display device using the above hologram screen.
摘要翻译： 一种用于产生记录由感光干板上的物体光和参考光形成的干涉条纹的全息图的方法以及具有漫射和散射特性或通过光漫射体的目标光主要包括以下步骤： 在第一步骤中，计算第一衍射效率eta00和第二衍射效率etaR0的等于etaR0 / eta00。 衍射效率eta00取决于两个物体光束。 效率etaR0取决于物体光和参考光。 在第二步骤中，调节对象光的强度E0和参考光的强度ER，使得etaR0 / eta00的比率设定为至少10，效率eta00不超过5％。 使用上述全息图的显示装置由用于产生信号光的显示单元构成; 通过反射或透射全息图形成的全息屏幕和用于将信号光投影到全息屏幕的投影单元。 根据本发明，当观察者观察屏幕上显示的图像以及使用上述全息图的显示装置时，可以容易地制造全息图，例如不具有混浊状态的屏幕全息图。
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公开(公告)号：US20240184245A1
公开(公告)日：2024-06-06
申请号：US18550117
申请日：2022-02-14
发明人： KENJI OHKI , MASAHIRO TAKADA , KUNIYA ABE
CPC分类号： G03H1/2202 , G03H2001/0088 , G03H2223/16 , G03H2240/51
摘要： To provide a display device capable of further improving reliability of the display device with respect to manufacturing variations, wavelength variations of light sources, and active variations (variations due to external factors). There is provided a display device including at least a light source, a first hologram, and a second hologram, in which the first hologram compensates for dispersion of light emitted from the light source and diffracts and emits the light, the second hologram diffracts the light diffracted with compensated dispersion, and emits the light in a direction of a pupil of a user, and the first hologram has an intensity distribution of different diffraction efficiency with respect to a wavelength of the light emitted from the light source depending on a position in a plane of the first hologram.
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