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1. KR1020090051103 - METHOD AND APPARATUS FOR ENCODING COMPUTER-GENERATED HOLOGRAMS IN PIXELATED LIGHT MODULATORS

Amt
Republik Korea
Aktenzeichen/Anmeldenummer 1020097006251
Anmeldedatum 26.03.2009
Veröffentlichungsnummer 1020090051103
Veröffentlichungsdatum 20.05.2009
Veröffentlichungsart A
IPC
G03H 1/02
GSektion G Physik
03Fotografie; Kinematografie; vergleichbare Techniken unter Verwendung von nicht optischen Wellen; Elektrografie; Holografie
HHolografische Verfahren oder Vorrichtungen
1Holografische Verfahren oder Vorrichtungen, die sichtbares Licht, infrarote oder ultraviolette Wellen zur Erzeugung von Hologrammen oder von Bildern aus den Hologrammen verwenden; besondere Einzelheiten dazu
02Einzelheiten
G06T 1/00
GSektion G Physik
06Datenverarbeitung; Rechnen oder Zählen
TBilddatenverarbeitung oder Bilddatenerzeugung allgemein
1Universelle Bilddatenverarbeitung
G06F 17/50
GSektion G Physik
06Datenverarbeitung; Rechnen oder Zählen
FElektrische digitale Datenverarbeitung
17Digitale Rechen- oder Datenverarbeitungsanlagen oder –verfahren, besonders ausgebildet für spezielle Funktionen
50Computergestütztes Entwurfsystem
CPC
G03H 1/2294
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
1Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
22Processes or apparatus for obtaining an optical image from holograms
2294Addressing the hologram to an active spatial light modulator
G03H 1/02
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
1Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
02Details ; of features involved during the holographic process; Replication of holograms without interference recording
G03H 1/0808
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
1Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
04Processes or apparatus for producing holograms
08Synthesising holograms, ; i.e. holograms synthesized from objects or objects from holograms
0808Methods of numerical synthesis, e.g. coherent ray tracing [CRT], diffraction specific
G03H2001/0224
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
1Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
02Details ; of features involved during the holographic process; Replication of holograms without interference recording
0208Individual components other than the hologram
0224Active addressable light modulator, i.e. Spatial Light Modulator [SLM]
G03H2210/441
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
2210Object characteristics
40Synthetic representation, i.e. digital or optical object decomposition
44Digital representation
441Numerical processing applied to the object data other than numerical propagation
G03H2210/454
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
HHOLOGRAPHIC PROCESSES OR APPARATUS
2210Object characteristics
40Synthetic representation, i.e. digital or optical object decomposition
45Representation of the decomposed object
454into planes
Anmelder SEEREAL TECHNOLOGIES S.A.
시리얼 테크놀로지즈 에스.에이.
Erfinder LEISTER NORBERT
레이스터 노베르트
Vertreter 김태홍
신정건
Prioritätsdaten 102006042467 09.09.2006 DE
Titel
(EN) METHOD AND APPARATUS FOR ENCODING COMPUTER-GENERATED HOLOGRAMS IN PIXELATED LIGHT MODULATORS
(KO) 픽셀 광 변조기에서 컴퓨터 제작 홀로그램의 코딩 방법 및 장치
Zusammenfassung
(EN) The object is to largely eliminate the errors which arise in the reconstruction of a hologram, calculated point by point, as a result of the encoding of said hologram into pixels of finite extent. The invention achieves the object by means of a method in which the common wavefront calculated from the object sectional planes (6, 7, 8) is multiplied by the inverse transform of the pixel shape and pixel transparency in the viewer's window (11) before the wavefront modified by the multiplication is transformed to the hologram plane (14) and encoded as an amplitude and/or phase distribution of the hologram in the pixels of the light modulator (9, 91). This method is implemented in a corresponding apparatus which contains an additional memory unit for providing a Fourier transform or its inverse Fourier transform and also a multiplication unit. ©KIPO&WIPO 2009
(KO) 본 발명의 과제는 점마다 계산된 홀로그램의 재구성하는 동안 상기 홀로그램을 유한 크기의 픽셀로 코딩함으로 인해 나타나는 에러를 광범위하게 없애는 것이다. 상기 과제는 본 발명에 따라, 물체 단면들(6, 7, 8)로부터 계산된, 관찰자 윈도우(11)에서의 공통 파면이 픽셀 형상 및 픽셀 투명도의 역변환과 승산된 후에, 상기 승산에 의해 변형된 파면이 홀로그램 면(14)으로 변환되며, 광 변조기(9, 9')의 픽셀에서 홀로그램의 진폭 및/또는 위상 분포로서 코딩되는 방법에 의해 해결된다. 상기 방법은 푸리에 변환 또는 역 푸리에 변환을 제공하기 위한 추가 메모리 유닛 및 승산 유닛을 포함하는 상응하는 장치에서 실시된다.