WO1996030807A1 - Article de visualisation en trois dimensions et technique d'elaboration - Google Patents

Article de visualisation en trois dimensions et technique d'elaboration Download PDF

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Publication number
WO1996030807A1
WO1996030807A1 PCT/JP1996/000745 JP9600745W WO9630807A1 WO 1996030807 A1 WO1996030807 A1 WO 1996030807A1 JP 9600745 W JP9600745 W JP 9600745W WO 9630807 A1 WO9630807 A1 WO 9630807A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet material
rear surface
points
dimensional
light
Prior art date
Application number
PCT/JP1996/000745
Other languages
English (en)
Japanese (ja)
Inventor
Toru Suzuki
Hideyuki Wakai
Manabu Ando
Hiroyuki Mizukami
Original Assignee
Komatsu Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd. filed Critical Komatsu Ltd.
Publication of WO1996030807A1 publication Critical patent/WO1996030807A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/08—Stereoscopic photography by simultaneous recording
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/24—Stereoscopic photography by simultaneous viewing using apertured or refractive resolving means on screens or between screen and eye
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms

Definitions

  • the present invention relates to a three-dimensional three-dimensional display object capable of displaying a three-dimensional three-dimensional object three-dimensionally without an aid such as glasses, and a method for manufacturing the same.
  • the display hologram method one of these methods, an object to be displayed is prepared, and a light wave from the subject, called object light, and a light wave coming from another direction, called reference light, interfere with each other. Recording: After that, the developed photosensitive material is irradiated with light from the same direction as the reference light to perform 3D stereoscopic display.
  • holographic stereogram method which is another method
  • an image of an object to be displayed is captured by a camera from a plurality of different directions, and the film is developed, so that an original image photograph in which a plurality of frames of object images are recorded.
  • Obtain the row While shifting the original picture row by one frame, irradiating each frame with laser light and projecting the captured object image onto the transmission diffusion screen, a hologram dry plate is placed on the back of the transmission diffusion screen
  • the reference light is applied to the hologram dry plate.Therefore, interference fringes between the object light and the reference light transmitted through the transmission / diffusion screen are recorded on the hologram dry plate.
  • an integral photography method as a technology for three-dimensional stereoscopic display other than holography.
  • a compound eye lens a collection of extremely small lenses such as an insect compound eye lens
  • Place and image the subject As a result, one subject is imaged as a plurality of inverted images on the back side of the dry plate through a fine lens.
  • the stereoscopic image is reproduced as a real image at the original position
  • the present invention has been made in view of such circumstances, and provides a beautiful color three-dimensional three-dimensional display in a short manufacturing time without using an object to be displayed, and without requiring an exposure facility, a development facility, and a light source for reproduction.
  • An object of the present invention is to provide a three-dimensional display material to be realized and a method for manufacturing the same.
  • a three-dimensional three-dimensional display object is provided by using a sheet material that has a diffractive action corresponding to a small lens array and collects the parallel light beams at a plurality of points on the rear surface of the sheet material when the parallel light beams are incident.
  • the surface of the object desired to be displayed is approximated by a set of a plurality of object points, and the point light source light from each of these object points is incident on the sheet material.
  • a diffractive action corresponding to the small lens array is provided, and parallel light is incident.
  • a three-dimensional display object is manufactured using a sheet material that focuses the parallel rays on multiple points on the back surface of the sheet material:
  • the surface of the object desired to be displayed is approximated by a set of a plurality of object points, and the point light source light from each of these object points is assumed to be incident on the sheet material.
  • the color gradation corresponding to each of the object points is directly recorded at each position on the rear surface of the calculated sheet material:
  • the rear surface of the sheet material has a diffractive action corresponding to the small lens array and, when a parallel light beam is incident, condenses the parallel light beam at a plurality of points on the rear surface of the sheet material. Then, the data for three-dimensional display of the three-dimensional object is directly printed to form a three-dimensional display object.
  • FIG. 1 shows an embodiment of the present invention.
  • FIG. 3 is a diagram showing an arrangement of small lenses in a small lens array:
  • Figure 6 Diagram showing the field of view of one lenslet array:
  • FIG. 7 Explanatory diagram when directivity is given to the field of view of the small lenses of the small lens array
  • FIG. 8 Explanatory diagram when directivity is given to the field of view of the small lenses of the small lens array
  • FIG. 9 Cylindrical Figure showing a three-dimensional three-dimensional display object of the present invention.
  • FIG. 1 shows an embodiment of the present invention, where P is a three-dimensional object desired to be displayed.
  • the three-dimensional object P itself is an image pickup process for three-dimensional display.
  • the 3D coordinate values of the object points that make up the surface of this 3D object P are used to produce a 3D display object
  • the surface of the three-dimensional object P desired to be displayed is approximated by a set of a plurality of object points Pl to Pn, and a three-dimensional coordinate data of each of these approximated object points in a predetermined X-YZ coordinate system is prepared in advance.
  • This 3D coordinate data is prepared by actual measurement or calculation based on design data.
  • S is a sheet-like small lens array (also known as a compound eye lens or a bank eye lens) in which a plurality of small lenses L1 to m having the same optical characteristics are densely arranged two-dimensionally.
  • the individual lenses L1 to Lm have a function of converging incident light to respective different points when parallel rays are incident along the optical axis direction.
  • the small lens array S is designed so that the surface formed by the focal point coincides with the rear surface F of the sheet of the small lens array S.
  • the small lenses are arranged in a square as shown in Fig. 3 (a). They may be arranged, or they may be arranged in a hexagonal shape as shown in FIG. 3 (b).
  • a plurality of object points Pl to Pn approximated to the object to be displayed are considered as point light sources, and light emitted from the plurality of point light sources Pl to Pn passes through each of the small lenses of the small lens array S and is rearward of the sheet. Calculate the position when it reaches F using the principle of light wave propagation (Step 100)
  • the light condensing positions Q12 to Qlm of the object point P1 by the other lenses L2 to Lm are calculated, and the respective lenses L1 to Lm of the other object points P2 to Pn are calculated by Lm.
  • the condensing positions Q21 to Q2m, ..., Qnl to Qnm-Next the condensing positions Qll to Qnni on the rear surface of the sheet obtained by the above calculation correspond to the object points Pl to Pn Color gradation is recorded directly (step 110). For example, FIG.
  • each condensing point Qll to Qlm of the object point P1 shows each condensing point Qll to Qlm of the object point P1, but each condensing point Qll to Qlm Color recording of the same color gradation corresponding to the object point PI: That is, the same color gradation corresponding to the corresponding object point is color-recorded at each condensing point of the same object point.
  • a three-dimensional image corresponding to the three-dimensional object P can be obtained.
  • the object P can be visually recognized at the current position, that is, as if it is protruding toward the user.- In the example of FIG. 1, the displayed three-dimensional object P is displayed as if it is protruding toward the user.
  • the Z coordinate of the object P negative and performing the calculations of the above equations (1) and (2), it is possible to display a three-dimensional object also on the back side of the sheet.
  • a hologram, diffraction grating, or Fresnel lens having the same optical characteristics as the small lens array S may be used instead of the small lens array S.
  • a hologram it is equivalent to the small lens array S.
  • the hologram is exposed so that the light diffraction effect of the hologram can be realized. If a hologram is used, the visual field can be easily controlled in any direction.Press technology such as embossed hologram is used as the hologram.
  • the three-dimensional stereoscopic image is made visible by observing from the direction perpendicular to the surface of the sheet S.
  • the field of view may be directional so that the three-dimensional image can be viewed at the same time:
  • the light emitted from the lens has an angle of 20 i determined by the focal length of the lens and the pupil diameter with respect to the optical axis. Because of the limited range (reverse cone), the position at which the displayed stereoscopic image can be observed is limited only when the observer's eyes are within the angular range 20 i: Therefore, as shown in FIG.
  • the optical axis ki of the small lens L i is inclined by an angle ⁇ from the normal direction n of the sheet S, the field of view moves from + ( ⁇ ⁇ + ⁇ ) to 1 (0 i ⁇ ) with respect to the normal direction. Obviously, in this case, as shown in FIG.
  • the sheet S can be formed into a cylindrical shape or a conical shape as shown in FIG. 9, thereby observing a three-dimensional object from a 360 ° direction.
  • 3D display material
  • the surface of an object desired to be displayed is approximated by a set of a plurality of object points, and the point light source light from each of these object points has a diffraction effect corresponding to the small lens array.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention porte sur une technique d'élaboration d'un article de visualisation cubique en trois dimensions à l'aide d'une feuille à diffraction S correspondant à une rangée S constituée de petites lentilles, dans laquelle on fait converger des rayons lumineux parallèles incidents à la feuille sur plusieurs points de la face arrière de celle-ci. La première étape consiste à rapprocher la surface d'un article P que l'on souhaite visualiser d'un ensemble de points de profil, P1 à Pn, et à calculer chaque position de diffraction, Q11 à Qnm, sur la surface arrière de la feuille tout en tenant compte de l'émission d'un faisceau lumineux sur la feuille par chacun des points de profil. La seconde étape consiste à inscrire directement le dégradé de teinte correspondant à chaque point de profil sur chaque position de la face arrière de la feuille calculée lors de la première étape. Il est possible de réaliser une belle présentation en trois dimensions et ce, en peu de temps, sans utiliser de matériel d'exposition, de développement ni une source lumineuse pour la reproduction.
PCT/JP1996/000745 1995-03-24 1996-03-22 Article de visualisation en trois dimensions et technique d'elaboration WO1996030807A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7066490A JPH08262369A (ja) 1995-03-24 1995-03-24 ３次元立体表示物およびその製造方法
JP7/66490 1995-03-24

Publications (1)

Publication Number Publication Date
WO1996030807A1 true WO1996030807A1 (fr) 1996-10-03

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ID=13317301

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1996/000745 WO1996030807A1 (fr) 1995-03-24 1996-03-22 Article de visualisation en trois dimensions et technique d'elaboration

Country Status (2)

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JP (1) JPH08262369A (fr)
WO (1) WO1996030807A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11109287A (ja) * 1997-10-03 1999-04-23 Toppan Printing Co Ltd レンチキュラー・ディスプレイ装置
JP2006259058A (ja) * 2005-03-16 2006-09-28 Matsushita Electric Ind Co Ltd 三次元画像表示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220981U (fr) * 1975-07-31 1977-02-15
JPH0627552A (ja) * 1992-05-11 1994-02-04 Polaroid Corp 三次元像の作成
JPH0667591A (ja) * 1992-08-21 1994-03-11 Fujitsu Ltd ホログラムの作成および立体表示方法並びに立体表示装置
JPH0682612A (ja) * 1992-08-28 1994-03-25 Toppan Printing Co Ltd 回折格子アレイおよびそれを用いた立体像表示装置
JPH0635234B2 (ja) * 1987-07-21 1994-05-11 日本ビクター株式会社 Ｘｙｚプロツタ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220981U (fr) * 1975-07-31 1977-02-15
JPH0635234B2 (ja) * 1987-07-21 1994-05-11 日本ビクター株式会社 Ｘｙｚプロツタ
JPH0627552A (ja) * 1992-05-11 1994-02-04 Polaroid Corp 三次元像の作成
JPH0667591A (ja) * 1992-08-21 1994-03-11 Fujitsu Ltd ホログラムの作成および立体表示方法並びに立体表示装置
JPH0682612A (ja) * 1992-08-28 1994-03-25 Toppan Printing Co Ltd 回折格子アレイおよびそれを用いた立体像表示装置

Also Published As

Publication number Publication date
JPH08262369A (ja) 1996-10-11

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