公开(公告)号：EP1484651B1

公开(公告)日：2013-12-11

申请号：EP02028430.3

申请日：2002-12-18

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Kitamura, Mitsuru

IPC: G03H1/08 ,  G03H1/26

CPC classification number: G03H1/0841 ,  G03H1/028 ,  G03H1/0808 ,  G03H2001/0478 ,  G03H2001/085 ,  G03H2001/2242 ,  G03H2210/30 ,  G03H2210/32 ,  G03H2210/33 ,  G03H2210/36 ,  G03H2210/441 ,  G03H2210/452 ,  G03H2210/55 ,  G03H2210/56 ,  G03H2240/41 ,  G03H2240/62

公开(公告)号：EP1777597A3

公开(公告)日：2012-11-21

申请号：EP05026518.0

申请日：2002-12-18

Applicant: DAI NIPPON PRINTING CO., LTD.

Inventor： Kitamura, Mitsuru Dai Nippon Print. Co., Ltd. ,  Hamano, Tomohisa Dai Nippon Print. Co., Ltd.

IPC: G03H1/08

CPC classification number: G03H1/0808 ,  G03H1/028 ,  G03H1/0841 ,  G03H1/0891 ,  G03H1/30 ,  G03H2001/0016 ,  G03H2001/0204 ,  G03H2001/0858 ,  G03H2001/2236 ,  G03H2001/2242 ,  G03H2001/226 ,  G03H2001/2605 ,  G03H2001/306 ,  G03H2210/30 ,  G03H2210/32 ,  G03H2210/36 ,  G03H2210/40 ,  G03H2210/452 ,  G03H2210/454 ,  G03H2210/52 ,  G03H2210/55 ,  G03H2210/56 ,  G03H2224/04 ,  G03H2240/13 ,  G03H2240/56 ,  G03H2240/62

Abstract: The invention relates to a computer-generated hologram fabrication process that can reduce loads on computation of interference fringes for an original image including micro-characters. A visually perceivable original image 11 and a visually unperceivable original image 12 (micro-characters) are defined, and sample point sources of light P are defined at a low density on the original image 11 and at a high density on the original image 12. Interference fringes of object light coming from the point light sources on the original image 11 and reference light R are found on each computation point within an area α1 on a recording surface 20, and interference fringes of object light coming from point light sources on the original image 12 and reference light R are found on each computation point within an area α2 on the recording surface 20. The light sources that become samples are defined at a given pitch on sectional lines obtained by cutting the original images 11 and 12 by a multiplicity of sections (parallel with an XZ plane) located at a given spacing. The section-to-section spacing for the original image 12 is made narrows than that for the original image 11.

Abstract translation: 本发明涉及一种计算机生成的全息图制作工艺，其能够减少包括微型字符在内的原始图像的干涉条纹计算的负担。 定义视觉可感知的原始图像11和视觉上不可理解的原始图像12（微字符），并且在原始图像11上以低密度限定光P的采样点光源，并且以原始图像12上的高密度定义。 在记录表面20上的区域α1内的每个计算点上找到来自原始图像11上的点光源的对象光的干涉条纹和参考光R，以及来自点光源的对象光的干涉条纹 原始图像12和参考光R被发现在记录表面20上的区域α2内的每个计算点上。成为样本的光源在以原始图像11和12切割得到的截面线上以给定的间距被限定 位于给定间隔的多个部分（与XZ平面平行）。 原始图像12的部分间隔间隔比原始图像11窄

公开(公告)号：EP1287400A1

公开(公告)日：2003-03-05

申请号：EP01936615.2

申请日：2001-05-24

Applicant: Holographic Imaging LLC

Inventor： PAYNE, Douglas, Alan ,  BLANCHARD, Paul, Michael,c/o Plasmon Data Systems

IPC: G02B27/22

CPC classification number: G03H1/0808 ,  G02B27/225 ,  G03H1/2294 ,  G03H2001/221 ,  G03H2001/2236 ,  G03H2001/2242 ,  G03H2210/30 ,  G03H2210/452 ,  G03H2226/02 ,  G03H2226/05

Abstract: A reconfigurable, three-dimensional display (1) wherein knowledge of the viewer's (4) eyes is used to enable the effective exit pupil(s) of the display system to be optimised. The system utilises this knowledge to identify contributing regions (5) within the display (1) that contribute light to the viewer (4). Priority is given to calculating and displaying the part of the display corresponding to the contributing region (5), thereby allowing the system computation requirements to be minimised. Further computation savings are achievable by recognising that only light travelling in a limited range of angles need to be considered.

公开(公告)号：EP0590828A3

公开(公告)日：1996-05-29

申请号：EP93307272.0

申请日：1993-09-15

Applicant: FUJITSU LIMITED

Inventor： Ishimoto, Manabu, c/o FUJITSU Limited ,  Kato, Masayuki, c/o FUJITSU Limited ,  Aritake, Hirokazu, c/o FUJITSU Limited ,  Sato, Noriko, c/o FUJITSU Limited

IPC: G02B27/22 ,  H04N13/00 ,  G03H1/26

CPC classification number: G03H1/0808 ,  G03H1/2294 ,  G03H1/268 ,  G03H2001/085 ,  G03H2001/2281 ,  G03H2210/20 ,  G03H2210/30 ,  G03H2210/441 ,  G03H2210/45 ,  G03H2210/452 ,  G03H2240/62

Abstract: A stereoscopic display method whereby a hologram phase distribution is calculated and the calculated phase distribution is converted into a wave front of the light, thereby displaying a solid image. Further, a feature portion in a display target specified by 3-dimensional information is detected. Sampling points are set at a high density into the detected feature portion. Sampling points are set at a low density with respect to a non-feature portion as a portion other than the feature portion. In the phase calculation, a hologram phase distribution is calculated with respect to the set sampling points.

公开(公告)号：EP0589558A3

公开(公告)日：1994-06-08

申请号：EP93306161.6

申请日：1993-08-04

Applicant: FUJITSU LIMITED

Inventor： Kato, Masayuki, c/o Fujitsu Limited ,  Aritake, Hirokazu, c/o Fujitsu Limited ,  Ishimoto, Manabu, c/o FUJITSU LTD., ,  Sato, Noriko, c/o FUJITSU LIMITED ,  Nakashima, Masato, c/o FUJITSU LIMITED

IPC: G03H1/26 ,  G03H1/08 ,  G03H1/28 ,  G03H1/30

CPC classification number: G03H1/268 ,  G03H1/0406 ,  G03H1/0408 ,  G03H1/08 ,  G03H1/0808 ,  G03H1/2294 ,  G03H1/28 ,  G03H2210/33 ,  G03H2210/36 ,  G03H2210/452 ,  G03H2225/25 ,  G03H2225/32 ,  Y10S359/90

Abstract: A hologram of a virtual object or an object which actually exists is formed and a solid image is displayed. Three-dimensional information of the object to be displayed is divided into zones in the depth direction. Depth images are formed as 2-dimensional images which are seen from a plurality of points which are obtained by finely dividing the hologram forming surface every zone. AS an electronic hologram, a phase distribution at the hologram forming surface is calculated from the depth images and displayed on a liquid crystal display or the like. A reference light is irradiated to the display and is converted into an optical wave front, thereby displaying a solid image. In case of formation on a hologram recording medium, a zone image corresponding to each of the finely divided exposure regions of a dry plate is multiple exposed.

公开(公告)号：EP0593300A1

公开(公告)日：1994-04-20

申请号：EP93308211.7

申请日：1993-10-14

Applicant: FUJITSU LIMITED

Inventor： Ueda, Akihiko, c/o FUJITSU Limited ,  Monzen, Hirokuni, c/o FUJITSU Limited ,  Aritake, Hirokazu, c/o FUJITSU Limited ,  Kato, Masayuki, c/o FUJITSU Limited ,  Nakashima, Masato, c/o FUJITSU Limited

IPC: G03H1/08

CPC classification number: G03H1/08 ,  G03H1/2294 ,  G03H2001/0423 ,  G03H2001/085 ,  G03H2210/36 ,  G03H2210/452 ,  G03H2210/454 ,  G03H2225/32 ,  G03H2240/62

Abstract: A hologram surface to express a phase distribution, a visual field in which a solid image can be seen; and a stereoscopic display limit are set in a virtual space. A target to be stereoscopically displayed is subsequently expressed in the virtual space by a set of micro polygons. A plurality of slice planes which are parallel with the horizontal plane are set into the virtual space including the target. The line segments which intersect the polygons are obtained every slice plane. The detected line segment is divided or clipped as necessary and is finally divided into the portion which can be always seen from the whole region of the visual field and a portion which is obstructed by another line segment and can be seen from only a part of the visual field, thereby extracting the line segment. In the calculation of a phase distribution, sampling points are set onto the extracted line segment, a 1-dimensional hologram phase distribution on the hologram surface is calculated every sampling points, and the calculated 1-dimensional hologram phase distributions are added every same slice plane.

Abstract translation: 表示相位分布的全息图表面，可以看到实心图像的视野; 并且在虚拟空间中设置立体显示限制。 立体显示的目标随后通过一组微多边形在虚拟空间中表示。 将与水平面平行的多个切片平面设置在包括目标的虚拟空间中。 每个切片平面获得与多边形相交的线段。 检测出的线段根据需要进行分割或剪辑，最后分为从视野的整个区域总是可以看到的部分和被另一个线段阻挡的部分，只能从 视野，从而提取线段。 在相位分布的计算中，将采样点设置在提取的线段上，在每个采样点计算全息图表面上的一维全息图相位分布，并将计算出的一维全息图相位分布与每个相同的切片平面相加 。

公开(公告)号：EP3138654B1

公开(公告)日：2018-03-14

申请号：EP16185966.5

申请日：2009-08-24

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： MATSUMOTO, Naoya ,  INOUE, Takashi ,  FUKUCHI, Norihiro ,  ITO, Haruyasu

IPC: B23K26/00 ,  B23K26/06 ,  B23K26/067 ,  B23K26/073 ,  G02F1/061 ,  B41M5/26 ,  B23K26/03 ,  B23K26/064

CPC classification number: G02B5/32 ,  B23K26/032 ,  B23K26/064 ,  B23K26/0643 ,  B23K26/066 ,  G03H1/2294 ,  G03H2001/0094 ,  G03H2210/452 ,  G03H2225/32 ,  G03H2240/51

Abstract: A laser processing device 1 includes a laser light source 10, a spatial light modulator 20, a control section 22, and a condensing optical system 30. The spatial light modulator 20 is input with a laser light output from the laser light source 10, presents a hologram for modulating the phase of the laser light in each of a plurality of two-dimensionally arrayed pixels, and outputs the phase-modulated laser light. The control section 22 causes a part of the phase-modulated laser light (incident light) to be condensed at a condensing position existing in a processing region as a laser light (contribution light) having a constant energy not less than a predetermined threshold X. On the other hand, the control section 22 causes a laser light (unnecessary light) other than the contribution light condensed to the condensing position existing in the processing region to be dispersed and condensed at a condensing position existing in a non-processing region as a plurality of laser lights (non-contribution lights) having an energy less than the predetermined threshold X.

公开(公告)号：EP3138654A1

公开(公告)日：2017-03-08

申请号：EP16185966.5

申请日：2009-08-24

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： MATSUMOTO, Naoya ,  INOUE, Takashi ,  FUKUCHI, Norihiro ,  ITO, Haruyasu

IPC: B23K26/00 ,  B23K26/06 ,  B23K26/067 ,  B23K26/073 ,  G02F1/061 ,  B41M5/26 ,  B23K26/03 ,  B23K26/064

CPC classification number: G02B5/32 ,  B23K26/032 ,  B23K26/064 ,  B23K26/0643 ,  B23K26/066 ,  G03H1/2294 ,  G03H2001/0094 ,  G03H2210/452 ,  G03H2225/32 ,  G03H2240/51

Abstract: A laser processing device 1 includes a laser light source 10, a spatial light modulator 20, a control section 22, and a condensing optical system 30. The spatial light modulator 20 is input with a laser light output from the laser light source 10, presents a hologram for modulating the phase of the laser light in each of a plurality of two-dimensionally arrayed pixels, and outputs the phase-modulated laser light. The control section 22 causes a part of the phase-modulated laser light (incident light) to be condensed at a condensing position existing in a processing region as a laser light (contribution light) having a constant energy not less than a predetermined threshold X. On the other hand, the control section 22 causes a laser light (unnecessary light) other than the contribution light condensed to the condensing position existing in the processing region to be dispersed and condensed at a condensing position existing in a non-processing region as a plurality of laser lights (non-contribution lights) having an energy less than the predetermined threshold X.

公开(公告)号：EP2553531A2

公开(公告)日：2013-02-06

申请号：EP11716192.7

申请日：2011-04-01

Applicant: SeeReal Technologies S.A.

Inventor： ZSCHAU, Enrico ,  PFEIFER, Nils

IPC: G03H1/08 ,  G03H3/00 ,  H04S5/00 ,  H04S7/00

CPC classification number: G03H1/0808 ,  G03H1/2202 ,  G03H1/2249 ,  G03H1/2294 ,  G03H1/26 ,  G03H3/00 ,  G03H2001/2242 ,  G03H2001/2625 ,  G03H2210/12 ,  G03H2210/30 ,  G03H2210/36 ,  G03H2210/452 ,  G03H2210/63 ,  G03H2226/02 ,  G03H2226/05 ,  G03H2240/51 ,  G03H2240/56

Abstract: Method for computing the code for the reconstruction of three-dimensional scenes which include objects which partly absorb light or sound. The method can be implemented in a computing unit. In order to reconstruct a three-dimensional scene as realistic as possible, the diffraction patterns are computed separately at their point of origin considering the instances of absorption in the scene. The method can be used for the representation of three-dimensional scenes in a holographic display or volumetric display. Further, it can be carried out to achieve a reconstruction of sound fields in an array of sound sources.

Abstract translation: 用于计算的代码三维场景其中包括部分地吸收光或声音对象的重建方法。 该方法可以在计算单元中实现。 为了重构三维场景尽可能的真实，衍射图案分别计算在它们的原点考虑在场景中的吸收的实例。 该方法可用于在全息显示器或体积显示三维场景的表示。 此外，它可以进行的声源的阵列中来实现的声场的重建。

公开(公告)号：EP2160655B1

公开(公告)日：2011-03-23

申请号：EP08759668.0

申请日：2008-05-16

Applicant: SeeReal Technologies S.A.

Inventor： SCHWERDTNER, Alexander

IPC: G03H1/08

CPC classification number: G03H1/0808 ,  G03H1/2294 ,  G03H2001/0833 ,  G03H2210/36 ,  G03H2210/452 ,  G03H2226/02

Abstract: The invention relates to a method for generating video holograms, which functions principally for a holographic reproduction device (HAE), having at least one light modulator means (SLM) in which a scene (3D-S) which is deconstructed into object points (OP) is encoded as a complete hologram (H∑SLM) and can be viewed as a reconstruction from a visibility region (VR). A 3D-rendering graphic pipeline (RGP) determines color and depth information for the object points of the scene (3D-S), from which a holographic pipeline (HGP) determines the complex hologram values, by - for every visible object point (OPN) for which depth and color information are already present or are currently updated - A) immediately determining the subhologram (SHN) associated with this visible object point (OPN) and the associated difference subhologram (SD), wherein the difference subhologram (SD) is determined with (SD = SHN-SHX) as the difference of the associated subhologram (SHN) of the visible object point (OPN) and the subhologram (SHX) of a now obsolete, i.e., no longer visible, object point (OPX), B) adding the difference subhologram (SD) to the complete hologram (H∑SLM), and C) making the information linkage of the object point (OPN) and the subhologram (SHN) thereof callable in at least one subhologram memory (SH-MEM).