WO2000052500A1 - Dispositif pour la projection d'images et appareil de cuisson, appareil electromenager ou domotique et systeme de projection d'image mettant en oeuvre ledit dispositif - Google Patents
Dispositif pour la projection d'images et appareil de cuisson, appareil electromenager ou domotique et systeme de projection d'image mettant en oeuvre ledit dispositif Download PDFInfo
- Publication number
- WO2000052500A1 WO2000052500A1 PCT/FR2000/000500 FR0000500W WO0052500A1 WO 2000052500 A1 WO2000052500 A1 WO 2000052500A1 FR 0000500 W FR0000500 W FR 0000500W WO 0052500 A1 WO0052500 A1 WO 0052500A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lenses
- image
- pair
- fresnel lens
- light rays
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- 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
- G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
- G02B30/52—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels the 3D volume being constructed from a stack or sequence of 2D planes, e.g. depth sampling systems
-
- 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
- G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
- G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
Definitions
- the present invention relates to a device for projecting images. It also relates to a cooking appliance, a household appliance or home automation and an image projection system.
- the device presented here is of the type comprising a Fresnel lens making it possible to form an image of an object placed in its internal volume, said image appearing to be in suspension in the spatial portion in front of the Fresnel lens for an observer placed substantially in the axis of this lens.
- document FR-A-2768822 discloses a device for the optical projection of two-dimensional or three-dimensional images "floating" in front of a screen, visible without special glasses or prostheses.
- the invention relates to a device for forming real three - dimensional images for direct natural vision.
- It comprises a screen (1) made up of a fresnel lens, a mixer (2) and several projectors (7) made up of an image source (6) as well as an objective made up of lenses (3, 4, 5).
- the screen (1) is the only element visible to the observing public.
- Each projector (7) forms an image (11, 12) across the screen.
- the image (10, 11) can be placed at an adjustable distance from the screen (1), at the front or at the rear of the latter.
- Projection systems are also known which are also capable of projecting the desired image onto a screen placed at a given distance from a lens.
- a device according to FR-A-2768822 has the drawback of being of low efficiency as regards the impression of spouting and the definition of the relief obtained since it only comprises a Fresnel lens.
- this device implements several objectives, necessary for each image projection, which heavy considering that many optical elements are necessary.
- the invention makes it possible to remedy the drawbacks of these current techniques and to do this presents a device for projecting images making it possible to produce an image with greater definition of the relief.
- the invention overcomes a constant prejudice according to the current state of the art in that it combines two Fresnel lenses arranged in a contiguous manner, their turns being ace.
- One of the first objects of the invention is to simplify the structure of the image projection devices by making it less complex and less bulky. Another object of the invention is to be adaptable to various applications.
- the invention will apply, for example, to the household appliance or home automation field for viewing data or measurements with an impression of relief and gushing.
- the invention can also be applied to the field of advertising for the promotion of products which it will be possible to present in relief in front of the device.
- the invention will find another application in the field of cooking appliances since it can be associated with an oven to give from the outside a good view of the food present inside the oven, without opening the door of it.
- the invention could also find an application in the field of the projection of large images by associating several devices in a juxtaposed or superimposed manner.
- the present invention relates to a device for projecting images, of the type comprising a Fresnel lens making it possible to form an image of an object placed in its internal volume, said image appearing to be in suspension in the spatial portion located in front of the lens.
- Fresnel for an observer placed substantially in the axis of the Fresnel lens, Characterized by the fact that it has a second Fresnel lens attached to the first so that their turns face each other and correspond in order to produce a pair of lenses giving the image a greater definition of the relief.
- a double Fresnel prism lens making it possible to multiply the image of the object, to widen the angular zone around the axis of the pair of lenses in front of the device from which the image is visible. It has more than one pair of Fresnel lenses following each other on the path of the light rays coming from the object.
- It includes two lateral mirrors placed on either side of the object to widen the angular zone around the axis of the pair of lenses in front of the device from which the image is visible.
- It consists of two parts which are movable with one another, one supporting the object, the other part comprising the pair of lenses, in order to vary the focal distance of the device.
- It comprises at least one mirror capable of reflecting the light rays coming from the object towards the pair of lenses in order to adapt the light trajectory according to the configuration of the device.
- It comprises several object zones which follow one another in a direction perpendicular to the pair of lenses and separated by mirrors capable of reflecting the light rays coming from several objects towards the pair of lenses.
- the mirrors separating the object areas are one-way mirrors capable of transmitting the light rays coming from the object areas further from the pair of lenses. - It comprises, in front of the pair of lenses, a partition consisting of a one-way mirror or of a fine mesh fabric, said partition closing the device while transmitting the light rays to the outside of the device. - It includes means for lighting the object.
- the object is a video monitor screen or a luminous display.
- the invention also relates to a cooking appliance.
- a cooking appliance comprising an interior volume receiving the object to be cooked and a door at least part of which is made of transparent material, characterized in that it incorporates the device according to the invention, the interior volume of the appliance constituting the interior volume of the device and the transparent part of the door receiving the pair of lenses.
- the invention also relates to a household appliance or home automation device having a display of operating or measurement data, such as a scale, characterized by the fact that it comprises a device according to the invention so that the display constitutes the object whose image is formed.
- the present invention relates to an image projection system, characterized in that it comprises several devices according to the invention juxtaposed or superimposed, each device forming a portion of the desired overall image.
- Figure 1 shows schematically the formation of an image with two lenses joined together.
- Figure 2 is a section of a pair of lenses assembled according to the invention.
- Figures 3 to 6 are particular embodiments of the device.
- Figure 7 shows a household appliance or home automation according to the invention.
- FIG. 8 illustrates a system according to the invention. Fresnel lenses are commonly used in the optical field.
- projection systems comprising a Fresnel lens 1 behind which an object 3 is placed and allowing, along the path light rays 6 through the Fresnel lens 1, forming an image 4 in front of the Fresnel lens 1.
- the invention proposes to constitute a pair of Fresnel lenses by attaching a second Fresnel lens 2 to the first Fresnel lens 1.
- this pair of lenses is made in such a way that the two lenses 1 and 2 are placed side by side so that their turns 20 face each other and that they correspond, as illustrated in FIGS. 1 and 2.
- this joining of two lenses 1 and 2 provides the observer placed substantially along the axis 5 of the lenses 1 and 2 with good vision, even if it is not exactly in the axis 5.
- pairs of lenses are used as described above. These pairs of lenses follow one another along the path of the light rays from object 3.
- the two Fresnel lenses opposite one another and chosen to appear within the present description by way of nonlimiting example are necessarily convergent, that is to say positive .
- the two so-called lenses 1 and 2 collect the light from the object to concentrate it through the center of the two lenses, causing it to spring outside. There is therefore a double convergence created by the opposition of the two lenses placed face to face which generates a double optical visual ballooning.
- each lens 1, 2 will be opposite the other.
- the fit of the two lenses should be as good as possible so that the imprints of each one correspond best to the other.
- two positive convergent lenses of 405 mm by 405 mm will be chosen, forming a square with the following optical specifications:
- the present invention has, in a preferred embodiment, a specific lens whose function is to multiply the images from object 3.
- the specific lens used is a lens with a double Fresnel prism also known as a bi-prism lens.
- the angle of the prisms could be 39 °, the separation angle of 42 ° and the spacing of the facets of 0.508mm.
- the double prism lens can also be placed in front of or behind the pair of Fresnel lenses, on path 6 of the light rays coming from object 3.
- the double prism lens will be oriented vertically or horizontally with respect to the long direction of the facets.
- the light rays coming from the object 3 undergo, at the level of the facets of the prisms, a different deviation according to the orientation of the prisms. This is what induces the multiplication of the image and, in particular, its duplication.
- the object 3 is surrounded by two lateral mirrors 10A, 10B making it possible to widen the angular zone around the axis 5 of the pair of lenses 1 and 2 in which the image 4 is visible. This appears in FIG. 3. In fact, it is advantageous that the user can move around the axis 5 while continuing to observe the image 4.
- the device 18 presented here will preferably be produced in the form of a housing, for example of rectangular parallelepiped shape as in FIGS. 3 to 6.
- the inner faces of the walls 8A, 8B, 8C, 8D, 8E are dark colors, for example of matt black color.
- a device 18 consisting of a housing in two parts 11 and 12 as shown in FIG. 6.
- the first part, the part before it, is integral and receives the pair of lenses; the second part, the rear part 12 supports the object 3.
- the rear part 12 has a cross section of dimension slightly smaller than that of the front part 11 so as to fit into it.
- a set of guide rails 21 allows the translation of the part 12 into the part 11.
- the focal length is changed at will.
- the object 3 is not always placed along the axis 5 in front of the Fresnel lens.
- the device may include one or more mirrors 13 allowing the reflection of the light rays coming from the object 3.
- devices can be produced in different ways and in particular illustrated in FIG. 4.
- the device according to the invention allows the projection of images 4 from several object 3.
- the device will comprise several object zones 22 visible in FIG. 5 which follow one another in the direction of the axis 5 of lenses.
- Each object area 22 is separated from the next by a mirror 13, 14 making it possible to reflect the light rays coming from each object 3.
- This reflection is carried out in the direction of the pair of lenses.
- the mirrors 14 separating the object areas 22 are two-way mirrors.
- the mirror of the most distant object area 22 can be a mirror 13 of current design. It may be advantageous to constitute a device whose interior structural elements do not appear to the observer.
- the pair of lenses can be hidden by means of a partition marked 15 in FIG. 3. This partition 15 ensures the closing of the device while allowing the transmission of light rays towards the outside to constitute the image 4.
- the partition 15 may consist of a one-way mirror or of a fine mesh fabric.
- the present device can be used with any type of object 3.
- the object 3 can be a video monitor screen or even a luminous display 16.
- the object 3 is not self-lit, it may be useful to provide the device with lighting means for the object 3.
- the invention also relates to a cooking appliance conventionally consisting of an interior volume receiving the object to be cooked and a folding door at least part of which is made of transparent material in order to monitor cooking.
- the device described above can be combined with such a cooking appliance.
- this device will incorporate a device according to the invention so that the interior volume of the device constitutes or merges with the interior volume of the device.
- the transparent part of the cooking appliance door receives the pair of lenses. In this way, it is possible to view from the outside, without opening the door, the object placed inside the cooking appliance and to monitor its progress.
- the invention also relates to a household appliance or home automation which may be a bathroom scale or even a household appliance comprising a display.
- Such a display 16 may allow, for example, the display of operating data or even measurement data.
- a device is implemented as previously described in such a household appliance or home automation so that the display 16 constitutes the object 3 whose image is informed.
- sensors 17 have been shown diagrammatically capable of transmitting weight information to the display 16 for its repercussion, in front of the scale, in the format of an image appearing to float.
- the invention further relates to an image projection system, which will in particular allow the creation of large images.
- this system includes several devices 18 which will be juxtaposed or even superimposed according to the desired image configuration.
- Each of the devices 18 forms a portion of the desired overall image.
- Figure 8 gives an example.
- each device 18 constituting the system is itself provided to allow the production of a portion 19 of the overall image.
- this system can be implemented with objects 3 in the form of video screens, each of the screens video ensuring the formation of part of the image.
- the entire system and the projection can be ordered by computer means.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Projection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2000231698A AU2000231698A1 (en) | 1999-03-02 | 2000-02-29 | Image projection device and cooking appliance, electric or home automation household appliance and image projection system using said device |
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9902731A FR2790574B3 (fr) | 1999-03-02 | 1999-03-02 | Dispositif destine a faire jaillir en relief et en virtuel des informations electroluminescentes |
| FR99/02731 | 1999-03-02 | ||
| FR9903113A FR2790575B3 (fr) | 1999-03-05 | 1999-03-05 | Dispositif permettant le jaillissement immateriel d'images video dans le vide |
| FR99/03113 | 1999-03-05 | ||
| FR99/08588 | 1999-06-26 | ||
| FR9908588A FR2795829B3 (fr) | 1999-06-29 | 1999-06-29 | Dispositif permettant le relief d'images video et d'informations quelconques luminescentes ou, et electroluminescentes |
| FR9910755A FR2797706B3 (fr) | 1999-08-20 | 1999-08-20 | Balance virtuelle |
| FR99/10755 | 1999-08-20 | ||
| FR9914840A FR2801715A1 (fr) | 1999-11-25 | 1999-11-25 | La pesee en relief |
| FR99/14840 | 1999-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000052500A1 true WO2000052500A1 (fr) | 2000-09-08 |
Family
ID=27515635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2000/000500 Ceased WO2000052500A1 (fr) | 1999-03-02 | 2000-02-29 | Dispositif pour la projection d'images et appareil de cuisson, appareil electromenager ou domotique et systeme de projection d'image mettant en oeuvre ledit dispositif |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2000231698A1 (fr) |
| WO (1) | WO2000052500A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029472A1 (fr) * | 2000-10-05 | 2002-04-11 | Virtual Imagination S.A.R.L. | Procede d'adaptation relief monolithique |
| FR2815137A1 (fr) * | 2000-10-05 | 2002-04-12 | Gwenole Bocquet | Elargissement d'angle pour projection virtuelle |
| DE10259763A1 (de) * | 2002-12-19 | 2004-07-01 | BSH Bosch und Siemens Hausgeräte GmbH | Optische Betriebsanzeige für ein Haushaltgerät sowie Haushaltgerät, insbesondere Einbau-Haushaltgerät |
| DE102004062751A1 (de) * | 2004-12-27 | 2006-07-06 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltgerät |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1076466A (en) * | 1963-08-07 | 1967-07-19 | Minnesota Mining & Mfg | Optical refractors |
| FR2065533A1 (fr) * | 1969-10-27 | 1971-07-30 | Zeiss Jena Veb Carl | |
| US4261657A (en) * | 1978-08-09 | 1981-04-14 | Reiback Earl M | Optical display device |
| US4391495A (en) * | 1981-06-02 | 1983-07-05 | The Austin Company | Image display system |
| FR2582494A1 (fr) * | 1985-05-28 | 1986-12-05 | Bermardaud | Presentoir pour montrer un groupe d'objets ou d'ensemble d'objets identiques repartis selon une configuration circulaire ou polygonale |
| US4671625A (en) * | 1983-08-22 | 1987-06-09 | Noble Lowell A | Optical apparatus for producing a natural, viewable and optically interactive image in free space |
| US5257130A (en) * | 1992-01-30 | 1993-10-26 | The Walt Disney Company | Apparatus and method for creating a real image illusion |
| US5782547A (en) * | 1996-11-08 | 1998-07-21 | Videotronic Systems | Magnified background image spatial object display |
-
2000
- 2000-02-29 WO PCT/FR2000/000500 patent/WO2000052500A1/fr not_active Ceased
- 2000-02-29 AU AU2000231698A patent/AU2000231698A1/en not_active Abandoned
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1076466A (en) * | 1963-08-07 | 1967-07-19 | Minnesota Mining & Mfg | Optical refractors |
| FR2065533A1 (fr) * | 1969-10-27 | 1971-07-30 | Zeiss Jena Veb Carl | |
| US4261657A (en) * | 1978-08-09 | 1981-04-14 | Reiback Earl M | Optical display device |
| US4391495A (en) * | 1981-06-02 | 1983-07-05 | The Austin Company | Image display system |
| US4671625A (en) * | 1983-08-22 | 1987-06-09 | Noble Lowell A | Optical apparatus for producing a natural, viewable and optically interactive image in free space |
| FR2582494A1 (fr) * | 1985-05-28 | 1986-12-05 | Bermardaud | Presentoir pour montrer un groupe d'objets ou d'ensemble d'objets identiques repartis selon une configuration circulaire ou polygonale |
| US5257130A (en) * | 1992-01-30 | 1993-10-26 | The Walt Disney Company | Apparatus and method for creating a real image illusion |
| US5782547A (en) * | 1996-11-08 | 1998-07-21 | Videotronic Systems | Magnified background image spatial object display |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029472A1 (fr) * | 2000-10-05 | 2002-04-11 | Virtual Imagination S.A.R.L. | Procede d'adaptation relief monolithique |
| FR2815137A1 (fr) * | 2000-10-05 | 2002-04-12 | Gwenole Bocquet | Elargissement d'angle pour projection virtuelle |
| DE10259763A1 (de) * | 2002-12-19 | 2004-07-01 | BSH Bosch und Siemens Hausgeräte GmbH | Optische Betriebsanzeige für ein Haushaltgerät sowie Haushaltgerät, insbesondere Einbau-Haushaltgerät |
| DE10259763B4 (de) * | 2002-12-19 | 2017-02-09 | BSH Hausgeräte GmbH | Haushaltgerät, insbesondere Einbau-Haushaltgerät |
| DE102004062751A1 (de) * | 2004-12-27 | 2006-07-06 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltgerät |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2000231698A1 (en) | 2000-09-21 |
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