WO1998057215A1 - Optical adaptor couplable to any diffusing screen pertaining to a single conventional reproduction device, capable of producing tridimensional effects - Google Patents

Optical adaptor couplable to any diffusing screen pertaining to a single conventional reproduction device, capable of producing tridimensional effects

Info

Publication number
WO1998057215A1
WO1998057215A1 PCT/ES1997/000148 ES9700148W WO9857215A1 WO 1998057215 A1 WO1998057215 A1 WO 1998057215A1 ES 9700148 W ES9700148 W ES 9700148W WO 9857215 A1 WO9857215 A1 WO 9857215A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
mirror
device
image
semitransparent
plate
Prior art date
Application number
PCT/ES1997/000148
Other languages
Spanish (es)
French (fr)
Inventor
Juan Dominguez-Montes
Original Assignee
Dominguez Montes Juan
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

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/22Other optical systems; Other optical apparatus for producing stereoscopic or other three dimensional effects
    • G02B27/2228Stereoscopes or similar systems based on providing first and second images situated at first and second locations, said images corresponding to parallactically displaced views of the same object, and presenting the first and second images to an observer's left and right eyes respectively
    • G02B27/225Stereoscopes or similar systems based on providing first and second images situated at first and second locations, said images corresponding to parallactically displaced views of the same object, and presenting the first and second images to an observer's left and right eyes respectively of the autostereoscopic type, i.e. left and right images projected to the left and right eyes of an observer who is not required to view the images through optical systems placed adjacent to the eyes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B27/00Other optical systems; Other optical apparatus
    • G02B27/22Other optical systems; Other optical apparatus for producing stereoscopic or other three dimensional effects
    • G02B27/2271Other optical systems; Other optical apparatus for producing stereoscopic or other three dimensional effects the image being built up from image elements distributed over a three dimensional volume, e.g. by scanning the volume with modulated beams of radiation
    • G02B27/2292Other optical systems; Other optical apparatus for producing stereoscopic or other three dimensional effects the image being built up from image elements distributed over a three dimensional volume, e.g. by scanning the volume with modulated beams of radiation involving projecting an aerial or floating image

Abstract

The optical adaptor is comprised of a semi-transparent sheet of glass or plastic material (5), a planar mirror of total reflexion (6) and a spherical convergent mirror (3). Said adaptor can be coupled to any image reproduction screen such as a T.V. or computer cathode ray tube (7) or a film, T.V. or computer back projecting device, whether it is based on liquid crystal or any other type of support; on such screen two images are reproduced (1.4 and 2.4), one next to the other, and the optical adaptor of this invention produces the resultant optical effect that one of the images which is reproduced on such screen is viewed really where it is (1.4) and the other one is formed in front of the device, at a distance therefrom and floating in the air (4.4). Although the images are only in two differents planes, the observer has the impression that he sees a tridimensional complete scene between both images.

Description

Optical adapter attachable to any screen

BELONGING TO A SINGLE DEVICE DIFUSORA

CONVENTIONAL REPRODUCTION, CAPABLE OF PRODUCING EFFECTS

DIMENSIONAL.

DESCRIPTION N

FIELD OF THE INVENTION

This invention relates to the reproduction of two separate images of each other in space. A first form in the air in front of and separated from the device and the second within the device itself.

BACKGROUND OF THE INVENTION

The mixture of two different three-dimensional scenes using a semitransparent plate of glass or plastic is a technique known for years.

The application of this technique to play two flat images, separated in space, has also been made modern.

Dolfoff and Tullo described in the journal Laser Focus World, March 1997, a device capable of mixing the two images generated in the same diffusing surface of a single playback device. The resulting optical effect is that both images are formed spaced apart one in front of another and the two inside the playback device.

The use of lenses or convergent for generating images in space is also a technique mirrors formerly known.

Taking advantage of this property, Summer and others in EP-0739497 describes a device in which from two images each generated in a different screen belonging to a player device other shape as end result two images before another spaced apart in the space. It differs from that described by Dolfoff and Tulio in that one of the images is formed in the air, separate front and the player device.

The system described in this invention also differs from that described by Dolfoff and Tulio because one of the images is formed outside the device and the system described by Summer.

The system described herein differs from that described by Summer because, first, both images are generated in a single device player, secondly, the optical device is simpler because it uses a single converging mirror and third is cheaper because when using a single player device does not require additional elements synchronism between players devices.

DESCRIPTION OF THE INVENTION

The present invention is based on two physical phenomena known time ago; the ability of a single mirror or converging lens to generate three-dimensional images in space and the possibility of a semitransparent plate mixing together two dimensional images. In this invention is selected for its construction the mirror to the lens because it lacks chromatic aberration, its construction is simple, has better coefficient of light transfer and may have larger front focal length allowing reproductions more vision angle.

Here a single converging mirror is used to generate three-dimensional images in real space with rays, reflected upon it, from a real object.

In this invention the light rays from an image generated on a diffuser surface located at an optical distance equal to twice the focal length of the converging mirror after reflected form an image in space, separated from the mirror at the same distance anterior optic, ie twice the focal distance and have the same size as said image.

The semitransparent plate used in this invention to mix the image produced in the space by the converging mirror with another image also generated on the front surface but diffusing it elsewhere.

To achieve this effect, the diffusing surface on a DVD conventional images, two images are generated one on top of another. If it is decided that the upper image display furthest from the observer, the semitransparent plate in front of said image and covering totally be located at 45 ° with it. Since this film is semitransparent, the observer will see the image of transparency and where it is actually located.

The second image is created at the bottom of the diffusion surface. This image will suffer three thoughts along the optical path that will make you get from where it is actually located, to where they will form again after passing through the optical system.

The first reflection occurs in a plane rectangular mirror in front of the second image, covering it completely, and at 45 ° and 90 ° with it the semitransparent plate.

The lower image formed on the diffusing surface acts as subject to this plane mirror. The image of the object formed by the plane mirror is perpendicular to the diffusing surface that generated it.

The second reflection occurs on a perpendicular to the diffusing surface of the player and therefore parallel to the converging mirror image generated after the first reflection, placed on top of the diffusion surface reproduction.

The optical distance from the converging mirror to its object is twice the focal length of said mirror.

Rays ranging from the object before reaching the converging mirror will cross the semitransparent film without suffering any deformation. After the converging mirror reflected light rays again encounter the semitransparent plate where they undergo a third reflection.

As a result of this third reflection it will definitely form an image in space, floating away in front of the optical device and an optical path converging mirror equal to twice the focal length thereof.

The resulting effect is that the observer facing the device sees a first image floating in space located between it and the player device identical to that reproduced at the bottom of the diffusion surface. Away from him and anterior see a second amount of the reproduced at the top of the shower screen.

If the observer is in a strongly lit room, the light rays from this space may be reflected first at the semitransparent plate; second in the convergent and back through a third reflection in the eyes of the beholder mirror, producing some very disturbing reflections.

To avoid this inconvenience can semitransparent sheet capable of circularly polarize light used. This sheet polarize eg light passing through levógiramente (dextrógiramente) and light reflecting dextrógiramente (levógiramente).

Thus ambient light after reflected first in the semitransparent plate is polarized for example dextrógiramente (or levógiramente) in total reflection in the converging mirror rotates its polarization that is almost polarized levógiramente (or dextrógivamente) and can not be reflected again in the semitransparent plate because it polarizes the light dextrógivamente (or levógiramente). Thus it is eliminated the reflection of ambient light in the optical device.

The device of this invention can also position the image to be observed far, at the bottom of the diffusion surface reproduction. There will also reverse the placement of the semitransparent plate with the plane mirror, and locate the converging mirror on the bottom of said diffuser surface.

Similarly images can be placed left and right instead of up and down.

In short, the device of this invention is an attachable optical adapter to any diffusing screen belonging to a single device ordinary reproduction, such as a cathode ray tube, a device backprojection, a liquid crystal or any other display on the two images are generated next to one another such that upon coupling of the adapter on the screen produces the optical effect resulting from these images in front of each other are, being closest to the observer floating in the air and I separate player device, characterized by:

. a single playback device in playback diffusing surface whose two different images will be generated. a semitransparent film in front of one of the images and forming 45 ° with it, the image will be seen by the viewer in the same place where it is generated through this semitransparent plate, and

. a first flat mirror in front of the second image forming 45 ° and 90 ° with it prior semitransparent plate that sent the rays from the second image through the semitransparent plate to

. one second converging mirror, perpendicular to the diffusing surface reproduction and located on the opposite side of the baffle plate to the first plane mirror, which acts so that the light rays reflected in this second converging mirror after reflection in the semitransparent plate form an image in the air, situated between the playback device and the observer will be an exact replica of the second image generated on the diffusing surface.

DESCRIPTION OF THE FIGURES

To complement the description being made and in order to aid a better understanding of the invention characteristics, the present descriptive specification is accompanied, as an integral part thereof, a set of drawings where in an illustrative and non-limiting , it is represented as follows:

Figure 1 represents schematically the formation of an image by a converging mirror. Figure 2. - Represents the behavior of a semitransparent plate.

Figure 3. - represents schematically the behavior of a semitransparent plate with a converging mirror.

Figure 4. - It shows schematically the device of this invention composed of a single player device capable of generating on the diffusing surface of two different images, a plane mirror to one of these images at 45 ° therewith, a semitransparent plate against the other image forming 45 ° with it 90 ° with the plane mirror above, and perpendicular to the converging mirror diffusing surface.

PREFERRED EMBODIMENT OF THE INVENTION

Figure 1 shows schematically the formation in the air 2.1 image produced by the converging mirror 3, the light rays generated by the object 1.1

When used for this purpose, the distance that normally the object of converging mirror lies is twice their focal length. Being this distance the object mirror, the Gauss formula tells us that the distance from the mirror to form the image will be the same, ie also twice the focal length. In this distance it coincides spherical mirrors for paraxial rays with its radius of curvature. Ie the object is placed near the center of curvature of the spherical mirror and the image will be formed in the vicinity of this center. In these circumstances the sizes of the object and image will be approximately equal and deformations resulting from optical aberrations in the mirror, will be minimized. The observer 0 usually placed before the image 2/1 and the object 1.1 can hide his eyes through a baffle boxlike 4. Said observer 0 will see the image 2/1 floating in space and separated from the mirror by a distance approximately equal to the radius of curvature.

2 shows schematically the behavior of a semitransparent plate 5. situated opposite the observer 0 1.2 a first object that it can view directly through the semitransparent plate. 1.2 perpendicular to said object other object at a distance of 2.2 the semitransparent plate 5 different in the upper case to the distance to the object of the same sheet 1.2 is located is situated.

The semitransparent plate 5 forms 45 ° each of the objects 1.2 and 2.2.

Rays from the object reach the observer 2.2 0 after being deflected by the semitransparent plate 5 which this time acts as a mirror. The observer will see the image 0 3.2 2.2 object formed by the mirror 5 behind 1.2.

As a final result the observer will see pictures 1.2 and 3.2 a front of another with a distance between them which depends on the difference of distances of objects and 2.2 to 1.2 semitransparent plate 5.

3 shows the schematic behavior of an optical system composed of a converging mirror which works as described in figure 1 and a semitransparent plate working as described in Figure 2.

In this Figure 3 against the converging mirror 3 is placed the object 2.3 near its center of curvature, ie, a distance approximately equal to twice its focal length. The light rays from the object are directed to 2.3 and converging mirror 3 cross the semitransparent plate 5 since this by acting transparency allows passage without changing its trajectory. After reflected in the converging mirror 3 light rays forming the image to an optical distance 3.3 approximately equal to twice the focal length. In its optical path these light rays are again the semitransparent plate 5 which acts as a mirror this time. The end result is that the viewer sees the image 0 3.3 2.3 object in front of the player device separate from it and floating in space.

Separate from this, the observer will also see the object 0 1.3 since the film 5 can also act transparency as explained in figure 2.

As explained above in detail environmental reflections can be eliminated if the semitransparent plate 5 is a plate capable of polarizing the circularly light.

Figure 4 shows schematically the device of this invention. This Figure 4 is the result of adding a new optical element, a plane mirror 6, the system shown in Figure 3. In this Figure 3 the objects from where the rays are called 1.3 and 2.3 which are in mutually perpendicular planes which prevents both can be generated in the diffusion surface in a single playback device. To avoid this difficulty, a new plane mirror 6 total reflection forming 90 ° with the semitransparent plate is added. Objects 1.4 and 2.4 are formed on the same surface of a single diffuser playback device 7. The plane mirror 6 forms the image of the object 3.4 2.4 in the same place as that occupied in Figure 3 the object 2.3. The remaining operation is similar to that explained for Figure 3.

As a final result the observer 0 sees two images, the first 4.4 front device to an intermediate distance between the player device and the observer and floating in the air, and the second 1.4 separated from the previous and inside the device.

4.4 image corresponds in size and color in order 2.4. Both the 1.4 and the 2.4 object are generated in the diffusing surface of a single player regular images; screen cathode ray tube, computer monitor or overhead projector TV or cinema.

Claims

What is claimed
I Optical adapter attachable to .- any diffusing screen belonging to a single conventional reproducing device, capable of producing three - dimensional effects, such as a cathode ray tube, a projection device, a liquid crystal or any other display on the that two images are generated next to one another such that upon coupling of the adapter on the screen this produces the optical effect resulting from these images in front of each other are, being closest to the observer floating in the air and separate player, device characterized in that it comprises:
. a single playback device in playback diffusing surface whose two different images are generated,
. a semitransparent film in front of one of the images and forming 45 ° with it, the image will be seen by the viewer in the same place where it is generated through this semitransparent plate, and
. a first flat mirror in front of the second image forming 45 ° and 90 ° with it prior semitransparent plate that sent the rays from the second image through the semitransparent plate to
. one second converging mirror, perpendicular to the diffusing surface reproduction and located on the opposite side of the baffle plate to the first plane mirror, which acts so that the light rays reflected in this second converging mirror after reflection in the semitransparent plate form an image in the air, situated between the playback device and the observer will be an exact replica of the second image generated on the diffusing surface.
2 .- optical adapter attachable to any diffusing screen belonging to a single conventional reproducing device, capable of producing three - dimensional effects, according to claim I, wherein the two generated images on the diffusing surface is on top of the other.
3 .- optical adapter attachable to any diffusing screen belonging to a single conventional reproducing device, capable of producing three - dimensional effects, according to claim I, wherein the two generated images on the diffusing surface is one on the left of the other.
4 .- optical adapter attachable to any diffusing screen belonging to a single conventional reproducing device, capable of producing three - dimensional effects, according to previous claims, characterized in that the semitransparent plate operates unpolarized light.
5 .- optical adapter attachable to any diffusing screen belonging to a single conventional device capable of producing three - dimensional effects reproduction according to claims I to 3, characterized in that the semitransparent plate polarizes light circulates rmente.
PCT/ES1997/000148 1997-06-09 1997-06-09 Optical adaptor couplable to any diffusing screen pertaining to a single conventional reproduction device, capable of producing tridimensional effects WO1998057215A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES1997/000148 WO1998057215A1 (en) 1997-06-09 1997-06-09 Optical adaptor couplable to any diffusing screen pertaining to a single conventional reproduction device, capable of producing tridimensional effects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES1997/000148 WO1998057215A1 (en) 1997-06-09 1997-06-09 Optical adaptor couplable to any diffusing screen pertaining to a single conventional reproduction device, capable of producing tridimensional effects

Publications (1)

Publication Number Publication Date
WO1998057215A1 true true WO1998057215A1 (en) 1998-12-17

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PCT/ES1997/000148 WO1998057215A1 (en) 1997-06-09 1997-06-09 Optical adaptor couplable to any diffusing screen pertaining to a single conventional reproduction device, capable of producing tridimensional effects

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001035154A1 (en) * 1999-11-11 2001-05-17 4D-Vision Gmbh Method and device for effecting a three-dimensional display
US6560027B2 (en) * 2000-12-21 2003-05-06 Hewlett-Packard Development Company System and method for displaying information on a mirror

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447854A (en) * 1965-08-18 1969-06-03 Kollsman Instr Corp Three-dimensional viewer
US4623223A (en) * 1982-12-27 1986-11-18 Kempf Paul S Stereo image display using a concave mirror and two contiguous reflecting mirrors
US4799763A (en) * 1987-03-27 1989-01-24 Canaby Technologies Corporation Paraxial stereoscopic projection system
US4840455A (en) * 1985-03-20 1989-06-20 Paul Stuart Kempf And Pilar Moreno Family Trust 3-dimensional optical viewing system
EP0646823A2 (en) * 1993-09-30 1995-04-05 Hughes Aircraft Company Automotive instrument 3-d virtual image display
EP0656555A1 (en) * 1993-12-01 1995-06-07 Sharp Kabushiki Kaisha Display for 3D images
WO1996006371A1 (en) * 1994-08-18 1996-02-29 Friedman, Mark, M. Three-dimensional display
DE29618319U1 (en) * 1996-10-22 1997-01-02 Maas Uwe Apparatus for displaying moving images in successive levels

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447854A (en) * 1965-08-18 1969-06-03 Kollsman Instr Corp Three-dimensional viewer
US4623223A (en) * 1982-12-27 1986-11-18 Kempf Paul S Stereo image display using a concave mirror and two contiguous reflecting mirrors
US4840455A (en) * 1985-03-20 1989-06-20 Paul Stuart Kempf And Pilar Moreno Family Trust 3-dimensional optical viewing system
US4799763A (en) * 1987-03-27 1989-01-24 Canaby Technologies Corporation Paraxial stereoscopic projection system
EP0646823A2 (en) * 1993-09-30 1995-04-05 Hughes Aircraft Company Automotive instrument 3-d virtual image display
EP0656555A1 (en) * 1993-12-01 1995-06-07 Sharp Kabushiki Kaisha Display for 3D images
WO1996006371A1 (en) * 1994-08-18 1996-02-29 Friedman, Mark, M. Three-dimensional display
DE29618319U1 (en) * 1996-10-22 1997-01-02 Maas Uwe Apparatus for displaying moving images in successive levels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001035154A1 (en) * 1999-11-11 2001-05-17 4D-Vision Gmbh Method and device for effecting a three-dimensional display
US6560027B2 (en) * 2000-12-21 2003-05-06 Hewlett-Packard Development Company System and method for displaying information on a mirror

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