Abrégé

A holographic three-dimensional display system comprising a spatial spectrum parallel focus capturing device, a spatial spectrum holographic encoding device, and a discrete spatial spectrum restoring device. The system utilizes planar pixel information (J*K*M*N) of a flat panel display to convert discrete spatial spectrum image information (Imn) via holographic encoding into a discrete spatial spectrum holographically encoded image (Sjk), utilizes a corresponding lens array to restore a discrete spatial spectrum of the image, and then implements discrete spatial spectrum broadening at a sampling angle of ωmn via a holographic function screen, thus implementing complete spatial spectrum restoration of an original three-dimensional space, and producing true three-dimensional display visible to the human eye. Also provided is a holographic three-dimensional display method.

Classes IPC  ?

• G03H 1/04 - Procédés ou appareils pour produire des hologrammes
• G03H 1/22 - Procédés ou appareils pour obtenir une image optique à partir d'un hologramme
• G03B 35/00 - Photographie stéréoscopique
• G02B 27/22 - Autres systèmes optiques; Autres appareils optiques pour produire des effets stéréoscopiques ou autres effets de relief

Abrégé

Disclosed are a holographic three-dimensional information collecting and restoring device and method, where planar pixel information (J*K*M*N) of a flat panel display is utilized reasonably to convert discrete spatial spectrum image information Imn via holographic encoding into discrete spatial spectrum holographically encoded image Sjk, a discrete spatial spectrum thereof is restored by utilizing a corresponding lens array, and then, by means of a holographic function screen, discrete spatial spectrum broadening at a sampling angle of ωmn is implemented, thus implementing complete spatial spectrum restoration of an original three-dimensional space. By utilizing the lens array and the holographic function screen, the present invention effectively solves an inherent conflict in an integrated photography technique between the image quality of a microlens array and the resolution of a three-dimensional image that can be displayed thereby, and implements holographic encoding and holographic display of three-dimensional spatial information, thus producing perfected true three-dimensional display visible to the human eye.

Classes IPC  ?

• G03B 35/00 - Photographie stéréoscopique

Abrégé

R which is used on discrete spatial spectrum input image information, thereby achieving digital holographic display intended to restore complex wavefronts.

Classes IPC  ?

• H04N 15/00 - Systèmes de télévision stéréoscopique en couleurs; Leurs détails
• H04N 13/04 - Reproducteurs d'images
• H04N 13/02 - Générateurs de signaux d'image
• G03B 35/08 - Photographie stéréoscopique par enregistrement simultané
• G03B 35/18 - Photographie stéréoscopique par examen simultané
• G02B 27/22 - Autres systèmes optiques; Autres appareils optiques pour produire des effets stéréoscopiques ou autres effets de relief
• G03H 1/04 - Procédés ou appareils pour produire des hologrammes
• G03H 1/02 - Procédés ou appareils holographiques utilisant la lumière, les infrarouges ou les ultraviolets pour obtenir des hologrammes ou pour en obtenir une imageLeurs détails spécifiques Détails

Abrégé

A hologram functional screen (1) and its fabrication method are provided. When said hologram functional screen (1) is placed on reference plate PR, the spatial spectrum of the input information of the view information Imn carried by each spatial spectrum can be broadened with respect to spatial sampling angle ωmn. The broadening is made such that the output spatial spectrum of each view Imn reaches each other but does not overlap to make sure the digital holographic spatial spectra of the recovered three-dimensional spatial information are restored continuously and completely. In other words, for each pixel Hjk of said hologram functional screen (1), the broadening angle of the spatially-unidirectional input light happens to be the spatial sampling angle ωmn so as to obtain the holographic three-dimensional display aiming at restoring complex wave front.

Classes IPC  ?

• G03H 1/04 - Procédés ou appareils pour produire des hologrammes
• G03B 35/00 - Photographie stéréoscopique
• G02B 27/22 - Autres systèmes optiques; Autres appareils optiques pour produire des effets stéréoscopiques ou autres effets de relief

Abrégé

A real-time color holographical three-dimension display system and method implemented by using digital holographical display theory and regular camera-projector array system are disclosed, which perform space spectrum sample taking of to-be-displayed object O on its arbitrary space spectrum surface S at a sampling density of space sample angle wmn with M*N cameras array anchored on some reference point R in the space corresponding to object O, and project each obtained space spectrum view image Imn to corresponding reference surface PR which is necessary to rebuild three-dimension information of object O using corresponding M*N projectors array at the directions that each space spectrum is taken; realize complete space spectrum output of object O through the function of the holographical function screen placed on reference surface PR of finitely widening the space spectrum of each discrete space spectrum input image information so as to achieve the holographical digital display that aims at resuming the complex wavefront.

Classes IPC  ?

• G03H 1/06 - Procédés ou appareils pour produire des hologrammes utilisant de la lumière non cohérente
• G02B 3/00 - Lentilles simples ou composées

Abrégé

A hologram three-dimensional image information collecting device and method, a reproducting device and method are disclosed. The collecting device comprises M*N two-dimensional image picking-up units Cｍｎ to obtain M*N spatial spectrum sample images of an object O being three-dimensional displayed on an arbitrary spatial spectrum S (2); each sample point Sｍｎ corresponds to a body pixel Hmn of the object O; the information obtained by each two-dimensional image picking-up units Cｍｎ corresponds to the spatial spectrum image Imn of the body pixel Hmn; thus, M*N sample spatial spectrum images information of the object O in an array is obtained; M*N two-dimensional image picking-up units Cｍｎ are arranged on the spatial spectrum surface S (2) in a predetermined space sample angle ωｍｎ with their light axis focus on one reference point R in a corresponding space of the object O; each two-dimensional image picking-up unit Cｍｎ focuses on a visual surface of the object O in the corresponding spatial spectrum direction to obtain a clear spatial spectrum image Imn in the direction; wherein, M, N, m and n are natural numbers and at least one of M and N is larger than 2.

Classes IPC  ?

• G03B 35/00 - Photographie stéréoscopique
• G02B 27/22 - Autres systèmes optiques; Autres appareils optiques pour produire des effets stéréoscopiques ou autres effets de relief
• G03H 1/04 - Procédés ou appareils pour produire des hologrammes

Abrégé

A method for manufacturing a hologram projection screen includes the steps of: 1) recording hologram lens information on a photoresist plate; 2) metalizing the photoresist plate that has been exposed, to produce a master nickel plate of a hologram lens array through electroforming and joining; and 3) using the master nickel plate to emboss thermoplastic material, to obtain a screen body, on which the information of the hologram lens array is arranged. The hologram projection screen manufactured by this method can provide a variety of display contents.

Classes IPC  ?

• G02B 5/32 - Hologrammes utilisés comme éléments optiques
• G02B 3/00 - Lentilles simples ou composées
• G03H 1/00 - Procédés ou appareils holographiques utilisant la lumière, les infrarouges ou les ultraviolets pour obtenir des hologrammes ou pour en obtenir une imageLeurs détails spécifiques
• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes