WO1993025930A1 - Procede et dispositif pour creer un effet tridimensionnel - Google Patents

Procede et dispositif pour creer un effet tridimensionnel Download PDF

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Publication number
WO1993025930A1
WO1993025930A1 PCT/FI1993/000264 FI9300264W WO9325930A1 WO 1993025930 A1 WO1993025930 A1 WO 1993025930A1 FI 9300264 W FI9300264 W FI 9300264W WO 9325930 A1 WO9325930 A1 WO 9325930A1
Authority
WO
WIPO (PCT)
Prior art keywords
eye
image
aid
optical aid
viewing
Prior art date
Application number
PCT/FI1993/000264
Other languages
English (en)
Inventor
Lasse Aalto
Esa Honkaneva
Original Assignee
Suvitie, Juhani
Nummi, Immo
Reijonen, Pekka, Olavi
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 Suvitie, Juhani, Nummi, Immo, Reijonen, Pekka, Olavi filed Critical Suvitie, Juhani
Priority to AU43292/93A priority Critical patent/AU4329293A/en
Priority to DE4392651T priority patent/DE4392651T1/de
Publication of WO1993025930A1 publication Critical patent/WO1993025930A1/fr
Priority to FI945942A priority patent/FI945942A/fi

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/06—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of fluids in transparent cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
    • G02B26/0883—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements the refracting element being a prism
    • 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
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
    • G02B30/36—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using refractive optical elements, e.g. prisms, in the optical path between the images and the observer

Definitions

  • the invention relates to a method for creating a three-dimensional effect, in which method the three-dimensional effect is created by viewing an object, for instance two disparate images, by means of an optical aid.
  • the invention relates further to an arrangement for creating a three-dimensional ef- feet.
  • Previously known stereoscopic viewing devices are similar to a binocle or spectacles, i.e. devices intended for a viewer's both eyes.
  • the devices may be unsuitable for the viewer's sight, and therefore, they are often provided with adjusting means to adapt them to the viewer's sight.
  • adjusting means are often very unhandy and suitable for use within certain limits only.
  • Blinders of many kinds have also often been used in previously known devices for li ⁇ miting the viewing area. The blinders are to be ad- justed according to the distance between the eyes as well as according to image size and viewing distance.
  • the in ⁇ vention which is characterized in that the first image is viewed with one eye in a normal manner with ⁇ out impediment and that the second image is viewed simultaneously with the other eye by means of a sepa ⁇ rate optical aid freely displaceable between the eye and the second image.
  • the arrangement according to the invention is in turn characterized in that the optical aid is an instrument to be arranged only be ⁇ fore one eye, freely displaceable between the eye and the image and not influencing the other eye, which instrument is arranged to guide information from the second image to the eye before which .the aid is posi- tioned.
  • a primary advantage of the invention is that a three-dimensional effect is created in a very simple manner.
  • the viewer can keep his normal usual field of vision almost entirely and view the object quite nor ⁇ mally irrespective of his power of seeing, which means that the viewer may wear spectacles when view ⁇ ing the object if he wears such normally etc.
  • the invention does not necessarily require blinders of any kind, because a human being has an ability to choose from the information existing in the visual field the object he desires to view. This ability is a very dominant property one does not often even think of.
  • a further advantage of the arrangement ac- cording to the invention is that the arrangement can be made very small and light, which means that it may be a portable device, a table device etc.
  • Still an advantage of the invention is that images deviating from the horizontal plane can also be viewed.
  • the invention will be ex ⁇ plained in greater detail by means of preferred em ⁇ bodiments shown in the attached drawing, whereby
  • Figure 1 shows a general view of the operating principle of a first embodiment of the invention from above
  • Figure 2 shows a general view of the operating principle of a second embodiment of the invention from above
  • Figure 3 shows a general view of a preferred embodiment of an arrangement according to the inven ⁇ tion from the side
  • Figures 4 and 5 show an embodiment of the ar ⁇ rangement according to the invention provided with a housing
  • Figure 6 shows an embodiment of the •arrangement according to the invention provided with another kind of housing
  • FIG. 7 shows a general view of the operating principle of the embodiments according to Figures 4 5 to 6 from above
  • Figure 8 and 9 show general views of a double- sided embodiment of the arrangement according to the invention seen in different directions and
  • Figures 10 and 11 show the embodiment according 0 to the Figures 8 and 9 provided with a protective casing.
  • Figure 1 shows by means of reference numerals 1 and 2 a pair of images, from which a 5 three-dimensional effect is created.
  • Reference numer ⁇ als 3 and 4 of Figure 1 indicate a viewer's eyes in principle.
  • Reference numeral 5 again indicates an optical aid, by means of which the three-dimensional effect is created.
  • Reference numeral 6 indicates a 0 three-dimensional virtual image, which i ⁇ produced by means of the pair of images 1, 2 and tne aid 5.
  • a solid line with arrows illustrates how information goes from the image 1 to the eye 3 and from the image 2 to the eye 4, respectively.
  • the object to be viewed ' consists of two slightly different images or figures of the same object.
  • the optical aid i.e. a viewing device
  • the optical aid is placed before one eye so as to guide information from that image of the image pair that faces this eye to this eye.
  • the other eye gets the information without im ⁇ pediment from the second image.
  • This third image which has depth, is not a real one, but a vir ⁇ tual image created by the brain from two real images.
  • the viewing device may be removed from before the eye when the images are sufficiently close to each other 5 and have a suitable size, whereby the three-dimen ⁇ sional effect remains. Some training is needed, how ⁇ ever, to make the three-dimensional effect last.
  • the first image 1 is viewed with one eye 3 in a
  • optical aid 5 freely displaceable between the eye and the second image. It is essential that the optical aid 5 is an instrument to be arranged
  • the viewing takes place in natural surround ⁇ ings.
  • the image visible through the aid can be moved closer to or farther off the second image.
  • the fact is that the images have to-be suffi ⁇ ciently superimposed on each other to provide a three-dimensional effect and to make the viewing com- fortable.
  • One substantial advantage of the invention is disclosed here; it is not necessary to change the distance for accurate viewing, but the image seen is sharp. When using previously known devices fixed to the spectacles, one must move closer to or farther off the image, which makes the sharpness disappear.
  • Figure 2 shows another embodiment of the inven ⁇ tion.
  • Reference numerals 11 and 12 indicate a pair of disparate images and reference numerals 13 and 14 the viewer's eyes.
  • Reference numeral 15 indicates an op- tical aid, in this embodiment consisting of mirror means 15a and 15b.
  • Reference numeral 16 indicates a three-dimensional virtual image produced by means of the images 11 and 12 as well as the optical means 15. The course of information from the images to the eyes and the production of the virtual image, respective ⁇ ly, are presented in the same way as in Figure 1.
  • the embodiment of Figure 2 differs from the embodiment of Figure 1 only therein that the embodiment of Figure 2 utilizes mirror means instead of the prism of the em- bodiment of Figure 1.
  • the optical aid 25 comprises an optical part 25a, the angle of which guiding the information may be changed according to the viewing distance.
  • the aid comprises an elastic receptacle part 25b.
  • Surfaces 25c are made of transparent plastic or glass, for instance.
  • the surfaces 25c and the receptacle part 25b form an en ⁇ closed space filled with transparent liquid.
  • the angle ' guiding the information may be adjusted ' by squeezing e.g. with fingers according to arrows F, as a consequence of which a part of the liquid moves into the elastic receptacle part and said angle changes in the desired way.
  • the size, low manufacturing costs and easy use of the viewing -device make it possible to begin using three- dimensional material almost everywhere, and so can three-dimensional effect finally be brought into everyday life.
  • the unhandiness and complicatedness of the present viewing devices have up till now prevent ⁇ ed an introduction of tridimensionality into everyday life.
  • the information of the second image 2 for instance, can be easily guided to the eye 4 by this arrangement, while the other eye 3 receives its information without impedi ⁇ ment from the first image 1, the image pairs being positioned in the horizontal plane or in a plane de ⁇ viating from the horizontal plane.
  • the image pairs may be close to or far from each other and the size of the image pairs may vary.
  • the optical aid may be e.g. a prism, a lens, a semi-lens, a lens with planar surface or a viewing device having a surface or sur ⁇ faces deviating from the planar surface, by means of which it is possible to provide the virtual image produced e.g.
  • the optical aid may also be a device similar to a periscope with a mirror or prism struc ⁇ ture or a combination of prism and lens, by means of which the second original image can be magnified or reduced for saving space, for instance.
  • the optical aid i.e. the viewing device, can also be a Fresnel lens or a Fresnel prism structure.
  • an optical fibre provided with a certain lens and/or prism structure. It is also possible to use a viewing device the angle of which may be changed as per viewing distance, as stated above.
  • the material of the viewing device may be e.g. transparent plastic, such as acrylic plastic, or glass.
  • a mirror viewing device similar to a periscope presented in Figure 2 may consist of two mirrors, for instance. It is naturally also possible to use sever ⁇ al, e.g. four mirrors. When a mirror device is used, the images may be close to or very far from each other.
  • a further advan ⁇ tage of a mirror viewing device is that no coloured streaks appear at the edges of a three-dimensional image; such streaks turn up when a lens and prism device is used.
  • the mirror device has a better image contrast.
  • Figures 4 and 5 show a version of the embodi ⁇ ment of the invention provided with a housing 26.
  • the housing is detachable and may be arranged in two positions shown in the Figures 4 and 5.
  • the housing 26 protects the optical aid 5, which is a prism in this embodiment.
  • the housing 26 prevents the information of both images 1 and 2 from reaching one eye.
  • This fact ap ⁇ pears clearly from Figure 7 presenting the embodiment provided with the housing in a viewing situation.
  • the reference numerals of Figure 7 correspond substanti- ally to the reference numerals of Figure 1.
  • the hous- ing 26 may be fastened to the position according to Figure 5 by means of a mounting slot 28.
  • Figure 6 shows a version provided with a hous ⁇ ing 27 of another kind.
  • the hous- ing consists of two cover parts turnable from the position protecting the optical aid to the position shown by broken lines in Figure 6, in which position the housing 27 prevents an access of information from both images to the other eye, as shown in Figure 7.
  • the housing prevents the left eye 3 from seeing the right image 2 and the right eye from seeing the left image 1.
  • the right eye 4 sees a refracted image of the right image 2, which creates a three-dimensional effect together with the left image 1.
  • the three-dimensional image is a vir ⁇ tual image.
  • Figures 8 to 11 show a double-sided embodiment of the arrangement according to the invention.
  • the optical aid is generally indicated by reference nu- meral 35.
  • the optical aid com ⁇ prises two prisms 35a, 35b, having different angles.
  • the prism provided with the sharper angle may be used when viewing the image pair at a close distance.
  • the other prism is used when viewing the image pair at a normal distance.
  • Reference numeral 36 indicates a roughening for seizing and reference numeral 37 a protective casing.
  • the direction of motion of the device is marked on Figure 11 by means of an arrow.
  • the embodiment of the Figures 8 to 11 suits especial- ly well for shortsighted people.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

Dans le procédé décrit, l'effet tridimensionnel est crée par l'observation d'un objet, par exemple de deux images disparates (1, 2), au moyen d'un correcteur optique. Pour permettre une mise en ÷uvre simple, la première image (1) est observée avec un ÷il (3) de manière normale sans obstacle et la deuxième image (2) est observée simultanément avec l'autre ÷il (4) à l'aide d'un correcteur optique séparé (5) se déplaçant librement entre l'÷il et la deuxième image.
PCT/FI1993/000264 1992-06-17 1993-06-16 Procede et dispositif pour creer un effet tridimensionnel WO1993025930A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU43292/93A AU4329293A (en) 1992-06-17 1993-06-16 Method and arrangement for creating a three-dimensional effect
DE4392651T DE4392651T1 (de) 1992-06-17 1993-06-16 Verfahren und Anordnung zum Schaffen eines dreidimensionalen Effekts
FI945942A FI945942A (fi) 1992-06-17 1994-12-16 Menetelmä ja sovitelma kolmiulotteisen vaikutelman aikaansaamiseksi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI922838 1992-06-17
FI922838A FI922838A0 (fi) 1992-06-17 1992-06-17 Foerfarande och anordning foer aostad- kommande av tredimensionell effekt.

Publications (1)

Publication Number Publication Date
WO1993025930A1 true WO1993025930A1 (fr) 1993-12-23

Family

ID=8535495

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1993/000264 WO1993025930A1 (fr) 1992-06-17 1993-06-16 Procede et dispositif pour creer un effet tridimensionnel

Country Status (4)

Country Link
AU (1) AU4329293A (fr)
DE (1) DE4392651T1 (fr)
FI (1) FI922838A0 (fr)
WO (1) WO1993025930A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2743901A1 (fr) * 1996-01-22 1997-07-25 Drouard Gabriel Systeme monoculaire optique pour vision d'images stereoscopiques
FR2747480A1 (fr) * 1996-01-22 1997-10-17 Drouard Gabriel Intermediaire optique monoscopique pour vison d'image stereoscopique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3305444A1 (de) * 1983-02-17 1984-08-23 Arnold 2850 Bremerhaven Adam Anordnung zur erzielung eines dreidimensionalen effektes durch eine brille
EP0204867A1 (fr) * 1985-05-09 1986-12-17 Blaupunkt-Werke GmbH Dispositif pour regarder des images stéréoscopiques
US5119234A (en) * 1989-07-18 1992-06-02 Walt Petrus J V D Camera for stereoscopic images

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3305444A1 (de) * 1983-02-17 1984-08-23 Arnold 2850 Bremerhaven Adam Anordnung zur erzielung eines dreidimensionalen effektes durch eine brille
EP0204867A1 (fr) * 1985-05-09 1986-12-17 Blaupunkt-Werke GmbH Dispositif pour regarder des images stéréoscopiques
US5119234A (en) * 1989-07-18 1992-06-02 Walt Petrus J V D Camera for stereoscopic images

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2743901A1 (fr) * 1996-01-22 1997-07-25 Drouard Gabriel Systeme monoculaire optique pour vision d'images stereoscopiques
FR2747480A1 (fr) * 1996-01-22 1997-10-17 Drouard Gabriel Intermediaire optique monoscopique pour vison d'image stereoscopique

Also Published As

Publication number Publication date
DE4392651T1 (de) 1995-05-11
FI922838A0 (fi) 1992-06-17
AU4329293A (en) 1994-01-04

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