EP0830631A1 - Method and system for forming and projecting relief images - Google Patents
Method and system for forming and projecting relief imagesInfo
- Publication number
- EP0830631A1 EP0830631A1 EP97908309A EP97908309A EP0830631A1 EP 0830631 A1 EP0830631 A1 EP 0830631A1 EP 97908309 A EP97908309 A EP 97908309A EP 97908309 A EP97908309 A EP 97908309A EP 0830631 A1 EP0830631 A1 EP 0830631A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transparent
- image
- lens
- sphere
- receiver
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
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
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
-
- 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
- G02B30/40—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images giving the observer of a single two-dimensional [2D] image a perception of depth
Definitions
- the present invention relates to a method and a system for forming and projecting images giving relief.
- Various processes are already known which make it possible to produce images in relief and among these we can cite holography and stereoscopy. If these methods give good results, they nevertheless have the drawback of requiring, for their implementation, the use of relatively sophisticated equipment and which is consequently of a very high cost price.
- b) There is also known a process and a system for forming and projecting images giving a perception of the relief, and among these we can cite the Patent of invention, filing date: March 3, 1982, Publication no.
- the present invention provides technical innovations and improvements, while aiming to remedy the aforementioned drawbacks a), by providing a method and a system for forming and projecting images of particularly simple design and at low cost, while providing excellent quality relief images.
- this method of forming and projecting images restoring the relief is characterized in that, when taking a picture, a curved image of the space observed in and on the surface of a solid sphere is formed. in transparent material, this curved image is transformed into an intermediate planar image with circular outline, which is recorded on a photosensitive or magnetic medium or directly transmitted using one or the other of the forms of performances and presentations claimed and among, during the projection, the intermediate planar image with circular outline is projected directly onto a screen incorporated on the back of a Fresnel lens arranged in the plane diametral hemispherical of a transparent hollow receiver and of the same diameter as this one.
- the invention is characterized by an optical system with reflections which can be adapted to the photographic camera, camera or television, making it possible to obtain the reduction and the reproduction of a space with the restitution of the relief.
- the object focus then being on the surface of the plano-convex or doublet entry lens, fig. 2, is focused on the diametral plane of a sphere or spherical diopter which can replace this, fig. 2, by its equivalent made in three parts, that is to say, a plano-convex lens adjoining a blade with two parallel faces and another plano-convex lens.
- the rays continue their paths in a path corresponding to the return, ie from 0 -) "'as indicated above, but that is to say, unlike the first situation of ° o -" 0.
- the sphere representing always proportionally the same real image of space, also reproduces the virtual image of it, by transparency and reflections on its two faces, one anterior, the other posterior, it is respectively inverted, inverted. It is an absolute which includes three dimensions, three directions. In this case, it is used here as a parallel and reducing space.
- the diametral plane of the sphere being the largest dimension of it, we have according to the opening angle of the system and in the extension of the light rays, focused 0 to ⁇ , that is to say, that we took another step back from another space, the second.
- a visualization of the posterior face of the sphere which appears to be in fact the anterior face of the space, with inside a real and virtual image combined at the level of the diametral plane, that is to say the focus.
- the view of space is reversed, but seems real, although still deformed in the sphere, it is seen from ⁇ '- »0', that is to say from the diametral plane to the radius of the sphere .
- the following lenses are used to straighten the image until it no longer has any deformations on the plane, or with respect to the diametral plane of the sphere, the output lens acting as a plane mirror transparent.
- the image obtained is both real and virtual, it is in fact unequivocal, but the perspective view thereof being doubled due to the two paths light rays, such as the image that we would observe on a non-transparent plane mirror, we must therefore be located in an inverse space, reality being two times closer, that is to say it is inside a hemispherical receiver the diameter of the screen. It is therefore seen outside and this by reference to the diametral plane of the sphere or of the mirror representing space up to its radius.
- the virtual image is inverted and diametrically opposite to reality, and this with respect to the plane or just as with respect to the largest dimension of the diametral plane of a sphere or of the mirror according to the invention.
- the screen must be, for example, preferably white, translucent, incorporated or plated, like a thin film applied to the smooth part or the back of a Fresnel lens, positive, developing twice, fig. 3.
- a protruding hemispherical receptor comprising a back formed by a half-sphere and representing the curved space, such as a complete sphere .
- the method according to the invention can be implemented concretely, that is to say by using real physical spheres and lenses, or even by electronic means for calculating the images formed. Successively making it possible to finally reconstruct an image in relief similar to that created on the half-sphere constituting the receiver.
- the subject of the invention is also a system for forming and projecting images giving the relief, characterized in that it comprises, for shooting, an objective comprising successively, on an optical axis, a first input lens , of substantially plano-convex shape or a doublet, then a solid optical sphere made of transparent material, or a spherical diopter made in three parts, and having a radius of curvature greater than that of the convex surface of the first input lens.
- This optical sphere being arranged near the exit face of the first entry lens, then a set of lenses equivalent to a divergent lens of opening substantially of the same order of magnitude as that of the optical sphere and arranged at the exit of the optical sphere, and, for projection, a preferably translucent white screen incorporated or plated on the back of a positive Fresnel lens corresponding to the focal point of the image focused in the material on the diametral plane of the sphere of the objective according to the invention and in terms of the image obtained from it, that is to say, using a shooting device, and among the different designs proposed: - the first, allowing the reduction and reproduction of space is a receiver made up of a hollow, transparent, embedded hemisphere, with a diameter equal to that of the Fresnel lens.
- the circular opening made for viewing the image in space is of a diameter less than the diametral plane of the screen, and this taking account of the perspective view of the sphere, the spectator being outside of it.
- the observer can vary or modify his visual field according to its positioning or its displacement, that is to say with respect to the optical axis of the receiver, by referring to the circular plane located at the radius of the sphere. center 0, which is delimited by a specific two-way mirror, which improves the definition of the image and protects said receiver; and through which we can see the image in relief, and the space ⁇ >. Or also by deviating from the optical axis, one can then notice an effect of rotation of the image which seems to follow the gaze.
- the second comprising a preferably translucent white screen, incorporated or plated on the smooth side of the Fresnel lens arranged in the diametral plane of the half-sphere of the hollow receiver, recessed, specifically shaped as a two-way mirror, to increase the definition of the image by favoring the return path of the light rays projected by the Fresnel lens towards the semi-reflecting surface, the receiver can be protected by a transparent plane glass, also placed parallel to the diametral plane of the hemisphere and substantially to the radius of it.
- the third comprising a translucent white screen preferably, incorporated or plated on the back of the Fresnel lens forming an integral part of the hemispherical receiver, is made up specifically, of a two-way mirror, but it is presented prominently, that is to say not totally recessed.
- the fifth comprising for the projection a screen forming an integral part of the protruding hemispherical receiver or completely embedded, is made of transparent organic material;
- the sixth comprising a translucent screen, preferably white, is pressed against the diametrical flat surface of said full receivers;
- the seventh comprising a frosted or preferably white, translucent screen, incorporated or pressed against the flat surface diametral of a hollow half-sphere made of transparent optical glass or transparent organic material, containing either a transparent liquid or a specific transparent substance, constitutes the recessed or protruding receptor;
- the eighth is a full transparent half-sphere, called a magnifying glass for viewing the relief image obtained on photographic paper.
- the image obtained by means of the objective of the optical system according to the invention can be taken in the form of a slide or be recorded in adequacy, such as for example, in the form of a cinematographic film shot in the direction of the existing technique according to the scrolling horizontal. It can also be formed on a photosensitive target of a video camera in order to be recorded on a magnetic tape or to be transmitted by a television network. On the reception side, in the case of an image recorded on a photosensitive support (slide or cinematographic film), a projector for slides or even ordinary films. In the case of a transmission by television or a recording on magnetic tape, the image reproduced on the screens listed and which all present a circular contour, is transformed into an image in relief when viewed through the optical receivers defined.
- Plate 1/3 is a block diagram illustrating the principle of the process and the system for forming and projecting relief images according to the invention, (fig.l and 3).
- Figure 1 is an axial sectional view of an embodiment of the shooting objective of the system according to the invention.
- Figure 3 is an axial sectional view of a receiver used in conjunction with a slide or film projector.
- Plate 2/3 is an axial section view of the shooting objective of the system according to the invention, presenting two new possibilities or technical improvements (fig. 2), the first replacing the plano-convex input lens by a plano-convex doublet, the second characterized in that the sphere o
- solid optic in transparent material can be replaced by an equivalent spherical diopter, and manufactured in three parts.
- the method and the system for forming and projecting images giving the relief according to the invention implement, on the shooting side, a lens 1 which comprises a first plano-convex input lens, or doublet 2 whose convex face 2a is turned outwards, towards the space whose virtual image is to be formed. Behind this first input lens 2 is arranged a sphere 3 or spherical diopter fig. 2, made of optical glass, made of transparent organic material or with a radius of curvature greater than the radius of curvature of the convex face 2a of the lens d entry 2 or doublet fig. 2. In fact the diameter of the optical sphere 3 is,.
- the input lens 2 the axial position of which, relative to the optical sphere 3, can be adjusted, constitutes an image generator in this optical sphere 3 together with an input diaphragm for the objective.
- the distance separating the planar exit face of the entry lens 2 from the optical sphere 3 is relatively small, of the order of 1 to 9 mm.
- the modification of the axial position of the input lens 2 relative to the optical sphere 3 makes it possible to vary the angle of field.
- This input lens 2 is moved away from the optical sphere 3, that is to say the more it is shifted to the left in the drawing, the more the field angle is reduced.
- the image of the portion of space in front of the objective is inverted compared to the observed space, it must correspond to the object focus of the input lens and be adjusted in order to obtain the image focus at infinity, that is to say on the diametral plane of the sphere, where the virtual and real image are combined, but it is reversed, on the anterior hemispherical surface of the optical sphere 3 according to the invention, c '' i.e. the right hemisphere on the drawing, this image being marked by a reinforced line, plate 3 / 3.fig.5.
- Behind the optical sphere 3 is arranged a set of lenses 4 which is equivalent to a single slightly divergent lens. The function of this set of lenses 4 is to straighten the optical path of the light beam emerging from the optical sphere 3 in order to record the space information in both directions.
- this set of lenses consists of a first diverging lens 5 concave-plane associated with a second converging lens 6 plane-convex whose left convex face 6a has a radius of curvature more larger than that of the right concave outlet face 5a of the plano-concave lens 5.
- the plano-convex converging lens 6 can be axially adjustable by displacement in translation.
- the lens assembly 4 ensures a gradual straightening of the image first formed on the concave face 5a of the plano-concave lens
- the image provided by the objective 1 is projected, by means of a projection device 11, onto a screen incorporated or plated 12 on the back of a Fresnel lens 13; or on a frosted surface 18 of the diametral plane of a solid hemisphere in optical glass, or a screen 20 forming an integral part of the diametral plane of the hemisphere in transparent organic material, or a screen 22 pressed against the planar diametral surface d 'A receiver made up either of optical glass or of organic matter; either the screens 18, 20, 22, of a hollow receiver made up either of optical glass or of organic material and containing a transparent liquid or a specific transparent substance.
- the image is projected onto the screen of the diametrical plane of the receiver according to each of the different designs mentioned above.
- the receivers are particularly and more precisely referenced: - the receiver 14 is constituted by a transparent hollow hemisphere, embedded, in optical glass or in organic material, having before a plane machined in a two-way mirror 15; - The receiver 16 is hollow, hemispherical, recessed and shaped specifically like a one-way mirror, with a transparent glass in front 17;
- the receiver 16 is hollow, hemispherical, protruding not embedded, is shaped specifically like a one-way mirror;
- the receiver 19 is a full hemisphere made of transparent, embedded or protruding optical glass;
- the receiver 21 is a full hemisphere made of transparent, embedded or projecting organic material
- the hollow receiver in transparent optical glass or in transparent organic material contains either a transparent liquid 23 or a transparent substance 24, it can be embedded or protruding;
- magying glass for viewing the image in relief for the photograph whose prints have been made on paper.
- the projection device 11 can be a conventional projector or the like, used for the projection of slides or cinematographic films.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9603250 | 1996-03-11 | ||
FR9603250A FR2741961B1 (en) | 1995-12-05 | 1996-03-11 | METHOD AND SYSTEM FOR FORMING AND PROJECTING IMAGES FOR PROVIDING THE REDUCTION AND REPRODUCTION OF A SPACE BY RESTORING THE FULL VIEW OF RELIEF |
PCT/FR1997/000392 WO1997034183A1 (en) | 1996-03-11 | 1997-03-05 | Method and system for forming and projecting relief images |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0830631A1 true EP0830631A1 (en) | 1998-03-25 |
Family
ID=9490205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97908309A Withdrawn EP0830631A1 (en) | 1996-03-11 | 1997-03-05 | Method and system for forming and projecting relief images |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0830631A1 (en) |
CA (1) | CA2251030A1 (en) |
WO (1) | WO1997034183A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2522832B1 (en) * | 1982-03-03 | 1985-07-05 | Loison Daniel | OPTICAL REFLECTION SYSTEM THAT CAN BE ADAPTED TO THE CAMERA, TELEVISION OR CAMERA, PROVIDING REDUCTION AND REPRODUCTION OF A SPACE WITH PERCEPTION OF RELIEF |
FR2542103B2 (en) * | 1982-03-03 | 1985-10-31 | Loison Daniel | OPTICAL REFLECTION SYSTEM THAT CAN BE ADAPTED TO THE CAMERA, TELEVISION OR CAMERA, PROVIDING REDUCTION AND REPRODUCTION OF A SPACE WITH PERCEPTION OF RELIEF |
DE3310481A1 (en) * | 1983-03-23 | 1984-09-27 | Daniel Paul Joseph Evreux Loison | Lens for generating relief-type images |
FR2557983B1 (en) * | 1984-01-09 | 1987-11-27 | Loison Daniel | METHOD AND SYSTEM FOR FORMING AND PROJECTING IMAGES GIVING A RELIEF IMPRESSION |
-
1997
- 1997-03-05 CA CA002251030A patent/CA2251030A1/en not_active Abandoned
- 1997-03-05 EP EP97908309A patent/EP0830631A1/en not_active Withdrawn
- 1997-03-05 WO PCT/FR1997/000392 patent/WO1997034183A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9734183A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2251030A1 (en) | 1997-09-18 |
WO1997034183A1 (en) | 1997-09-18 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
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17P | Request for examination filed |
Effective date: 19980318 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PREMIUM MEDICAL |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LOISON, DANIEL |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LOISON, DANIEL |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LOISON, DANIEL |
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17Q | First examination report despatched |
Effective date: 20030829 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20040109 |