EP2232305A1 - Optical system comprising a device for displaying information relative to the implementation of an automobile accessory - Google Patents

Optical system comprising a device for displaying information relative to the implementation of an automobile accessory

Info

Publication number
EP2232305A1
EP2232305A1 EP08862793A EP08862793A EP2232305A1 EP 2232305 A1 EP2232305 A1 EP 2232305A1 EP 08862793 A EP08862793 A EP 08862793A EP 08862793 A EP08862793 A EP 08862793A EP 2232305 A1 EP2232305 A1 EP 2232305A1
Authority
EP
European Patent Office
Prior art keywords
group
lenses
optical system
lens
facade
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
Application number
EP08862793A
Other languages
German (de)
French (fr)
Inventor
Maryline Thorailler
Pierre Louis Tassy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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 Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP2232305A1 publication Critical patent/EP2232305A1/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G02B27/0961—Lens arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • G02B3/0068—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements

Definitions

  • Optical system participating in an information display device relating to the implementation of an accessory of a motor vehicle.
  • the present invention is in the field of information display devices relating to the implementation of an accessory of a motor vehicle, such as a ventilation system, heating and / or air conditioning. It relates to an optical system participating in such a display device as well as said display device.
  • a motor vehicle is commonly equipped with an accessory, such as a ventilation, heating and / or air conditioning installation inside the vehicle interior, a mobile phone, a board computer , a satellite tracking system or other similar accessory.
  • the accessory is relatively any equipment, such as an optional device that is not essential to a primary and essential function of the vehicle, namely its displacement. More particularly, such an accessory does not participate in the implementation of the vehicle engine but is likely to control the latter.
  • the equipment may be a dashboard or even a speedometer.
  • Such an accessory commonly comprises a device for displaying at least one piece of information, such as information relating to the implementation of the accessory.
  • said information is for example a digital data, such as the temperature of the air contained inside the passenger compartment and / or the desired temperature of said air, or a symbol of the pictogram or icon type, of the kind representing the outline of the passenger compartment of the vehicle.
  • said information is for example information of the type telephone number and / or name of a correspondent.
  • said information is for example an alphanumeric character, an icon or a pictogram.
  • the display device comprises means for displaying said information.
  • the display means is in particular a display screen with transmissive lighting, reflective lighting and / or transflective lighting.
  • the display means is likely to be a liquid crystal screen, commonly defined by the acronym “LCD”, a screen comprising a matrix of thin film transistors, commonly defined by the acronym “TFT ", A vacuum fluorescent screen, commonly defined by the acronym” VFD “or a light emitting organic diode screen, commonly defined by the acronym” OLED ", or even a fixed symbol.
  • the display device also comprises a facade to indifferently protect the display means and / or act as a projection surface of said information.
  • the facade is for example a decorative pane for protecting the display means from the external environment to the display device.
  • the facade is likely to have an irregular surface and / or granular with asperities, especially in the case where it is not polished.
  • the display means and the facade are arranged facing each other, providing between them a space which is filled with air, whose refractive index is equal to 1.
  • the display means is for rendering visible to a user the information that is generated on the surface of the display means.
  • the display means is an LCD type screen
  • the latter is associated with at least one light source for backlighting, to make said information visible to the user through the facade.
  • the display means is shaped as a planar surface which extends along a general extension plane.
  • a general problem lies in the fact that the information displayed on the display means is capable of generating a projected image on the facade which is blurred for a user looking at said screen through the facade.
  • the document US 2006/0139759 proposes to arrange between the display means and the facade an optical imaging system which consists of a plurality of identical lenses divided into two groups. .
  • the lenses of a first group are arranged in a first plane placed vis-à-vis the screen, and the lenses of a second group are arranged in a second plane placed vis-à-vis the facade, the second plane being parallel to the foreground.
  • Each lens of the first group has an entrance face through which incoming light rays enter from the display means and each lens of the second group has an exit face of light rays towards the facade, the incoming light rays traversing said system up to the corresponding exit face to finally reach the facade.
  • Each lens has an optical axis and two apices formed at a respective end of the optical axis of said lens.
  • the optical axes of the lenses are oriented parallel to each other; being also oriented orthogonally on the one hand to the general extension plane of the display means and on the other hand to the first and second planes.
  • each lens of the first group is placed in line with a corresponding lens of the second group.
  • each lens of the first group is placed vis-à-vis a corresponding lens of the second group, so that their respective optical axes are coincident and one of the vertices of the lens of the first group is in contact with one of the vertices of the corresponding lens of the second group.
  • the use of a display device equipped with such an optical imaging system has drawbacks that must be remedied.
  • the image of the said information seen by the user through the facade is likely to consist of a plurality of partial images of said information, which is particularly unsatisfactory for the user.
  • the angle of view of a sharp image for the user is likely to be restricted. More precisely, a user located in a peripheral zone of the display device can not clearly visualize the information, which is restrictive or even dangerous for a user who is driving the vehicle.
  • one or more parasitic images of said information are likely to be projected on the facade and / or near the latter. These parasitic images induce visual nuisances for the user that it is desirable to reduce to a maximum.
  • the object of the present invention is to provide an optical system comprising a plurality of lenses distributed in at least a first group comprising at least two lenses and a second group comprising at least two lenses, at least one lens of the first group being disposed at least one lens. plumb with a corresponding lens of the second group, said optical system being able to focus an image on a façade of relatively any conformation, without generating parasitic images, the said image being clear, precise and integrated.
  • Another object of the present invention is to provide a display device comprising such an optical system, such a display device being intended to display information relating to the implementation of an accessory of a motor vehicle and being efficient, compact and reliable to be able to deliver a user said information without distorting the latter, nor alter it and without entertaining the user by the creation of visual artifacts.
  • the optical system of the present invention is an optical system comprising a plurality of lenses distributed in at least a first group comprising at least two lenses and a second group comprising at least two lenses. At least one lens of the first group is disposed in line with a corresponding lens of the second group.
  • said optical system is provided with means for channeling incoming light rays inside any lens of the first group to the corresponding lens of the second group.
  • These provisions are intended to prohibit the passage of incoming light rays inside any lens of the first group to a lens of the second group other than that arranged in line with said lens of the first group.
  • the incoming light rays inside a lens of the first group are oriented via the channeling means to the corresponding lens of the second group placed in line with the lens of the first group, to avoid a dispersion of these incoming light rays towards another lens of the second group than that located opposite the lens considered of the first group.
  • Said channeling means advantageously comprise a main gate which is interposed between the lenses of the first group and the lenses of the second group, the main gate having a distal edge bearing against the lenses of the first group and a proximal edge bearing against the lenses of the first group.
  • the main gate preferably comprises a plurality of main channels which extend between the distal edge and the proximal edge of said main gate.
  • Each main channel is advantageously arranged in line with a corresponding pair of lenses of the first group and the second group arranged in alignment with one another.
  • each main channel extends longitudinally between a first orifice which caps a lens of the first group and a second orifice which caps the corresponding lens of the second group.
  • the lenses of the first group are arranged in particular on a surface S1 while the lenses of the second group are in particular arranged along a surface S2.
  • the surface S1 is for example formed in a first plane P1.
  • Each lens of the first group preferably comprises a first optical axis A1 which is oriented orthogonally to said first plane P1 and in that each lens of the second group comprises a second optical axis A2 which is also oriented orthogonally to said first plane P1.
  • the first A1 and second A2 respective optical axes of lenses of the first group and the second group of the same pair are especially confused.
  • Each main channel advantageously comprises an axis of symmetry A which coincides with the first A1 and second A2 optical axes.
  • the main gate is for example arranged in a grid plane P 'which is formed parallel to said first plane P1.
  • the main gate is in particular made from an optically opaque material.
  • Each main channel advantageously houses a lens of a third group which is identical to the lenses of the first and second groups.
  • Each lens of the third group preferably comprises a third optical axis A3 which coincides with the first A1 and second A2 optical axes.
  • Each lens of the third group is preferably placed at an equal distance X of the lenses of the first and second group between which the lens of the third group is interposed.
  • the lenses of the third group are advantageously arranged in a third plane P3 which is arranged parallel to the first plane P1.
  • the channeling means preferably comprise at least one secondary grid provided with secondary channels.
  • Each secondary channel advantageously accommodates a respective lens of the first group.
  • Each secondary channel preferably houses a respective lens of the second group.
  • Each lens of the first group is for example disposed vertically above a respective pixel that comprises the display means.
  • the display device of the present invention is mainly recognizable in that it is a device for displaying at least one piece of information comprising a display means, a facade and such a system. optical, said display means generating said information in the form of light rays and being disposed opposite the facade, said optical system being interposed between the display means and the facade for projecting said information on the facade .
  • Said surface S1 has for example a conformation similar to a conformation C, P "of the facade.
  • Said surface S1 for example still has a conformation symmetrical to a conformation C, P "of the facade with respect to a plane of symmetry interposed between the facade and the surface S1.
  • the lenses of the first group are optically different from each other for focusing an image of said information on the facade.
  • the lenses of the second group are optically different from each other for focusing an image of said information on the facade.
  • the facade is for example arranged along a curved line C whose radius of curvature is indifferently directed towards the inside of the display device or towards the outside of the latter.
  • the first plane P1 is preferably arranged parallel to a general extension plane P of the display means.
  • Fig.1 is a schematic illustration of an information display device according to the present invention.
  • Fig.2 is a schematic illustration of a first alternative embodiment of the device shown in the previous figure.
  • FIG. 3 is a schematic illustration of a second alternative embodiment of the device illustrated in FIG. Fig.4 is a schematic illustration of a third alternative embodiment of the device shown in Fig.1.
  • FIG. 5 is a schematic illustration of a fourth variant embodiment of the device illustrated in FIG.
  • FIG. 6 is a schematic illustration of a fifth variant embodiment of the device illustrated in FIG.
  • FIG. 7 is a schematic illustration of a sixth variant embodiment of the device illustrated in FIG.
  • FIG. 8 is a schematic illustration of a seventh variant embodiment of the device illustrated in FIG.
  • a display device 1 of information 2 relating to the implementation of an accessory 3 is intended to equip a motor vehicle.
  • the accessory 3 consists in particular of a ventilation, heating and / or air conditioning installation but may similarly consist of a mobile phone, a satellite positioning system, a computer on board or any other apparatus that is not essential to the primary function of the motor vehicle, namely its movement.
  • the display device 1 is intended to be arranged inside the passenger compartment of the vehicle so as to deliver a user of the vehicle said information 2.
  • the latter 2 is for example a digital data, such as the temperature of the vehicle. air contained inside the passenger compartment, or a pictogram representing schematically the vehicle.
  • the display device 1 may be an interactive device allowing the user to control the implementation of the accessory 3. In this case, the display device 1 is for example organized in a touch device equipped electronic elements necessary for a controlled implementation of the accessory 3.
  • the display device 1 comprises a display means 4 for displaying the information 2 and a facade 5 on which the user views an image 6 of said information 2.
  • the display means 4 is currently a flat screen which is conformed according to a general extension plane P.
  • the display means 4 is a screen of relatively arbitrary nature, for example of the "LCD”, “TFT”, “OLED”, “VFD” or similar type, and is capable of being equipped with several light sources 7, especially in the case where the screen is of the "LCD” or "TFT” type; the light sources 7 being arranged facing a rear face 8 of the display means 4, to allow a backlighting of the latter 4 and consecutively allow the display of the information 2.
  • the front panel 5 is arranged vis-à-vis a front face 9 of the display means 4.
  • the front 5 covers the display means 4 to hide it when it is off, especially for aesthetic reasons.
  • Said facade 5 is disposed at a distance D from the display means 4, a space E being arranged between the display means 4 and the facade 5.
  • the facade 5 be granular and has irregularities, such as asperities and / or depressions.
  • An imaging optical system 10 is interposed between the display means 4 and the facade 5 to focus the image 6 of the information 2 on the facade 5.
  • the optical imaging system 10 is a system of any relatively arbitrary nature capable of converging at a point of the facade 5 of the incoming light rays 11 inside the imaging optical system 10.
  • the last 10 comprises at least a plurality of optical lenses 12 which are distributed in a first group 13 of lenses 12 and a second group 14 of lenses 12, a lens 12 of the first group 13 being arranged facing a lens 12 of the second group 14.
  • the lenses 12 are arranged in pairs of lenses 12 superimposed formed of a lens 12 of the first group 13 and a lens 12 of the second group 14.
  • Each lens 12 of the first group 13 has an optical axis A1 which is oriented orthogonally to the general extension plane P of the display means 4 and each lens 12 of the second group 14 comprises a second optical axis A2 which is also oriented orthogonally general extension plane P of the display means 4.
  • the axes A1 and A2 optics of a pair of lenses 12 superimposed of the first group 13 and the second group 14 are combined.
  • the lenses 12 of the first group 13 are arranged in a first plane P1 which is arranged parallel to the general plane of extension P of the display means 4.
  • the lenses 12 of the first group 13 are for example arranged in line with a respective pixel 16 of the display means 4.
  • the lenses 12 of the first group 13 are likely to be arranged differently with respect to the pixels 16 that comprises the display means 4. It will be understood that in the plane P1, the lenses 12 of the first group 13 may be arranged relative to each other in a relatively arbitrary tiling, preferably hexagonal, or even square or rectangular, in an order of the most effective optically at least effective.
  • Each lens 12 has an input face 17 through which the incoming light rays 11 penetrate and an exit face 18 through which light rays emanate from the lens 12.
  • the lens 18 comprise a respective apex 19 defined as a point on the surface of the lens 12 through which the optical axis A1, A2 of the lens 12 passes.
  • the latter 12 has a thickness L defined as the distance between the two vertices
  • each lens 12 of the first group 13 is located at a distance L1 from the display means 4 while each lens 12 of the second group 14 is located at a distance L2 from the projection surface 5. Finally, a lens 12 of the first group 13 is placed at a distance H from the lens 12 of the second group 14 with which it constitutes the pair of lenses 12 superimposed.
  • the lenses 12 of the first 13 and the second 14 group are indifferently made from glass by means of a photolithography process or a machining method, or from a plastic material from a injection or pressing process.
  • Such an optical imaging system 10 has the disadvantage of delivering to the user an image 6 of the information 2 which is fuzzy and / or truncated. In addition, parasitic images at the desired image of the information 2 appear on and / or near the facade 5. Finally, such an optical imaging system 10 is not suitable for a facade 5 relatively conformation any.
  • the channeling means 10 comprise a main gate 24 which is interposed between the lenses 12 of the first group 13 and the lenses 12 of the second group 14 taking support against each other. More specifically, the main gate 24 extends in a grid plane P 'parallel to the general plane of extension P of the display means 4.
  • the main gate 24 On either side of the plane P', the main gate 24 comprises a distal edge 25 which abuts against the lenses 12 of the first group 13 and a proximal edge 26 which bears against the lenses 12 of the second group 14. According to these variants, the distal 25 and proximal edges 26 are flat and parallel.
  • the main gate 24 is provided with main channels 27 which pass right through from the distal edge 25 to the proximal edge 26 of said main gate 24.
  • the main channels 27 are parallel to each other and extend longitudinally along an axis of symmetry A which is confused with the first A1 and second A2 optical axes of the lenses 12 of the first 13 and second 14 group of the pair 15 of lenses 12 corresponding.
  • Each main channel 27 is arranged in line with a corresponding pair of lenses 12 of the first 13 and the second 14 group. More specifically, each main channel 27 is delimited longitudinally by a first orifice 28 which caps a lens 12 of the first group 13 and a second orifice 29 which caps the corresponding lens 12 of the second group 14.
  • the main gate 24 is made from an optically opaque material, so that light rays penetrating inside a main channel 27 through the first orifice 28 can only exit from said main channel 27 by through the second port 29 of the main channel considered 27.
  • These arrangements are such that from a styling of the exit face 18 of the lenses 12 of the first group 13 and the input face 17 of the lenses 12 of the second group 14, the incoming light rays 11 inside a lens 12 of the first group 13 can only propagate towards the corresponding lens 12 of the second group 14 with which it forms a pair of lenses 12 superimposed.
  • the information 2 displayed on the display means 4 is reproduced identically on the facade 5, without appearance of parasitic images.
  • each main channel 27 of the main gate 24 houses a lens 12 of a third group 30 which have a pitch identical to the lenses 12 of the first 13 and second 14 group, and which are convergent.
  • the lenses 12 of the third group 30 are arranged in a third plane P3 which is arranged parallel to the first plane P1. Preferentially, the lenses
  • Each lens 12 of the third group 30 has a third optical axis A3 which coincides with the first A1 and second A2 optical axes.
  • Each lens 12 of the third group 30 is placed at an equal distance X from the lenses 12 of the first 13 and second 14 groups between which the lens 12 of the third group 30 is interposed.
  • the channeling means 10 comprise, in addition to the main gate 24, two secondary grids 31, 32 each provided with secondary channels 33.
  • Each secondary channel 33 of a first secondary grid 31 houses. a respective lens 12 of the first group 13 while each secondary channel 33 of a second secondary grid 32 houses a respective lens 12 of the second group 14.
  • the channeling means 10 may also comprise, in addition to the main grid 24, only one 31 or the other 32 secondary grids 31, 32.
  • the secondary grids 31, 32 are more particularly necessary if the thickness L of the lenses 12 is not much less than the distance H, especially when the H / L ratio is of the order of 3 or less.
  • the channeling means 10 consist solely of two secondary grids 31, 32 as defined above. This variant is particularly suitable in the case where the two groups 13,14 of lenses 12 are almost touching.
  • the lenses 12 of the second group 14 are arranged in a second plane P2 which is formed parallel to said first plane P1 and to a plane P "of general conformation of the facade 5.
  • the facade 5 is arranged in a curve C whose radius of curvature 22 is directed towards the display means 4 and whose center Bending 23 is indifferently located between the display means 4 and the projection front 5 or disposed vis-à-vis the rear face 8 of the display means 4.
  • the radius of curvature is oriented towards the outside of said display device.
  • the lenses 12 of the second group 14 are arranged in a curved surface S2 having a radius of curvature 21 directed towards the display means
  • the distribution of the lenses 12 of the second group 14 is similar to the conformation of the facade 5, each pair of lenses 12 providing a magnification equal to 1.
  • an intermediate image 34 of the information 2 by the intermediate of the lenses of the first group 13 is flat.
  • the lenses 12, regardless of the first group 13 and the second group 14 are identical to each other.
  • the lenses 12 of the second group 14 are adapted so as to curve said intermediate image 34 projected on the facade 5. To do this, the lenses 12 of the second group 14 are different from each other, a pair of lenses 12 of the first 13 and second 14 group, such that each pair of lenses 12 operates with a magnification equal to 1.
  • the lenses 12 of the first group 13 are arranged in a curved surface S1, in which case the curvature of the latter S1 is reversed with respect to the case where only the lenses 12 of the second group 14 are arranged according to the surface S2. It is also conceivable to simultaneously arrange the lenses 12 of the first group 13 in a curved surface S1 and the lenses 12 of the second group 14 in a curved surface S2, in which case the curvature of the surface S2 is similar in conformation, but less accentuated. , that the curvature of the facade 5 while the curvature of the surface S1 is of opposite conformation, but more accentuated, than that of the facade 5. The effect of the curvatures of the surfaces S1 and S2 is added to adapt to the curvature of the facade 5.
  • the curvatures of the surfaces S1 and S2 satisfy a rule which advocates that all the lens couples 12 provide a magnification of 1.

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

Abstract

The invention relates to an optical system (10) that comprises a plurality of lenses (12) distributed into a first group (13) including at least two lenses (12) and a second group (14) including at least two lenses (12), wherein at least one lens (12) of the first group (13) is provided over a corresponding lens (12) of the second group (14). The optical system (10) is provided with a means (20) for guiding the light rays (11) entering inside any lens (12) of the first group (13) towards the corresponding lens (12) of the second group (14).

Description

Système optique participant d'un dispositif d'affichage d'informations relatives à la mise en œuvre d'un accessoire d'un véhicule automobile. Optical system participating in an information display device relating to the implementation of an accessory of a motor vehicle.
Domaine technique de l'invention.Technical Field of the Invention
La présente invention est du domaine des dispositifs d'affichage d'informations relatives à la mise en œuvre d'un accessoire d'un véhicule automobile, tel qu'une installation de ventilation, de chauffage et/ou de climatisation. Elle a pour objet un système optique participant d'un tel dispositif d'affichage ainsi que ledit dispositif d'affichage.The present invention is in the field of information display devices relating to the implementation of an accessory of a motor vehicle, such as a ventilation system, heating and / or air conditioning. It relates to an optical system participating in such a display device as well as said display device.
Etat de la technique.State of the art
Un véhicule automobile est couramment équipé d'un accessoire, tel qu'une installation de ventilation, de chauffage et/ou de climatisation de l'air contenu à l'intérieur de l'habitacle du véhicule, un téléphone portable, un ordinateur de bord, un système de localisation par satellites ou autre accessoire analogue. L'accessoire est un équipement relativement quelconque, tel qu'un appareil optionnel qui n'est pas indispensable à une fonction première et primordiale du véhicule, à savoir son déplacement. Plus particulièrement, un tel accessoire ne participe pas à la mise en œuvre du moteur du véhicule mais est susceptible de contrôler cette dernière. A titre d'exemple, l'équipement peut être un tableau de bord, voire un compteur de vitesse.A motor vehicle is commonly equipped with an accessory, such as a ventilation, heating and / or air conditioning installation inside the vehicle interior, a mobile phone, a board computer , a satellite tracking system or other similar accessory. The accessory is relatively any equipment, such as an optional device that is not essential to a primary and essential function of the vehicle, namely its displacement. More particularly, such an accessory does not participate in the implementation of the vehicle engine but is likely to control the latter. By way of example, the equipment may be a dashboard or even a speedometer.
Un tel accessoire comprend couramment un dispositif d'affichage d'au moins une information, telle qu'une information relative à la mise en œuvre de l'accessoire. Dans le cas où l'accessoire est une installation du genre susvisé, ladite information est par exemple une donnée numérique, telle que la température de l'air contenu à l'intérieur de l'habitacle et/ou la température souhaitée dudit air, voire un symbole du type pictogramme ou icône, du genre représentant le contour de l'habitacle du véhicule. Dans le cas où l'accessoire est un téléphone portable, ladite information est par exemple une information du genre numéro de téléphone et/ou nom d'un correspondant. Dans le cas où l'accessoire est un ordinateur de bord ou un système de localisation par satellite, ladite information est par exemple un caractère alphanumérique, une icône ou un pictogramme.Such an accessory commonly comprises a device for displaying at least one piece of information, such as information relating to the implementation of the accessory. In the case where the accessory is an installation of the aforementioned kind, said information is for example a digital data, such as the temperature of the air contained inside the passenger compartment and / or the desired temperature of said air, or a symbol of the pictogram or icon type, of the kind representing the outline of the passenger compartment of the vehicle. In the case where the accessory is a mobile phone, said information is for example information of the type telephone number and / or name of a correspondent. In the case where the accessory is an on-board computer or a satellite tracking system, said information is for example an alphanumeric character, an icon or a pictogram.
Le dispositif d'affichage comprend un moyen d'affichage de ladite information. Le moyen d'affichage est notamment un écran d'affichage à éclairage transmissif, à éclairage réflectif et/ou à éclairage transflectif. Par exemple, le moyen d'affichage est susceptible d'être un écran à cristaux liquides, communément défini par l'acronyme anglais « LCD », un écran comportant une matrice de transistors en film mince, communément défini par l'acronyme anglais « TFT », un écran fluorescent à vide, communément défini par l'acronyme anglais « VFD » ou un écran à diode organique émettrice de lumière, communément défini par l'acronyme anglais « OLED », voire un symbole fixe.The display device comprises means for displaying said information. The display means is in particular a display screen with transmissive lighting, reflective lighting and / or transflective lighting. For example, the display means is likely to be a liquid crystal screen, commonly defined by the acronym "LCD", a screen comprising a matrix of thin film transistors, commonly defined by the acronym "TFT ", A vacuum fluorescent screen, commonly defined by the acronym" VFD "or a light emitting organic diode screen, commonly defined by the acronym" OLED ", or even a fixed symbol.
Le dispositif d'affichage comprend aussi une façade pour indifféremment protéger le moyen d'affichage et/ou faire office de surface de projection de ladite information. La façade est par exemple une vitre décorative destinée à protéger le moyen d'affichage de l'environnement extérieur au dispositif d'affichage. La façade est susceptible de présenter une surface irrégulière et/ou granuleuse comportant des aspérités, notamment dans le cas où elle n'est pas polie. Le moyen d'affichage et la façade sont disposés en vis-à-vis l'un de l'autre, en ménageant entre eux un espace qui est empli d'air, dont l'indice de réfraction est égal à 1.The display device also comprises a facade to indifferently protect the display means and / or act as a projection surface of said information. The facade is for example a decorative pane for protecting the display means from the external environment to the display device. The facade is likely to have an irregular surface and / or granular with asperities, especially in the case where it is not polished. The display means and the facade are arranged facing each other, providing between them a space which is filled with air, whose refractive index is equal to 1.
Le moyen d'affichage est destiné à rendre visible à un utilisateur ladite information qui est générée à la surface du moyen d'affichage. Dans le cas où le moyen d'affichage est un écran du type « LCD », ce dernier est associé à au moins une source de lumière destinée à le rétro-éclairer, pour rendre ladite information visible à l'utilisateur à travers la façade. Le moyen d'affichage est conformé en une surface plane qui s'étend selon un plan d'extension générale. Un problème général posé réside dans le fait que l'information affichée sur le moyen d'affichage est susceptible de générer une image projetée sur la façade qui est floue pour un utilisateur regardant ledit écran à travers la façade. Pour tenter de résoudre ce problème, le document US 2006/0139759 (HASHIMOTO et al) propose de disposer entre le moyen d'affichage et la façade un système optique d'imagerie qui est constitué d'une pluralité de lentilles identiques réparties en deux groupes. Les lentilles d'un premier groupe sont disposées selon un premier plan placé en vis-à-vis de l'écran, et les lentilles d'un deuxième groupe sont disposées selon un deuxième plan placé en vis-à-vis de la façade, le deuxième plan étant parallèle au premier plan. Chaque lentille du premier groupe comporte une face d'entrée à travers laquelle pénètrent des rayons lumineux entrants en provenance du moyen d'affichage et chaque lentille du deuxième groupe comporte une face de sortie de rayons lumineux vers la façade, les rayons lumineux entrants parcourant ledit système jusqu'à la face de sortie correspondante pour atteindre finalement la façade.The display means is for rendering visible to a user the information that is generated on the surface of the display means. In the case where the display means is an LCD type screen, the latter is associated with at least one light source for backlighting, to make said information visible to the user through the facade. The display means is shaped as a planar surface which extends along a general extension plane. A general problem lies in the fact that the information displayed on the display means is capable of generating a projected image on the facade which is blurred for a user looking at said screen through the facade. In an attempt to solve this problem, the document US 2006/0139759 (HASHIMOTO et al) proposes to arrange between the display means and the facade an optical imaging system which consists of a plurality of identical lenses divided into two groups. . The lenses of a first group are arranged in a first plane placed vis-à-vis the screen, and the lenses of a second group are arranged in a second plane placed vis-à-vis the facade, the second plane being parallel to the foreground. Each lens of the first group has an entrance face through which incoming light rays enter from the display means and each lens of the second group has an exit face of light rays towards the facade, the incoming light rays traversing said system up to the corresponding exit face to finally reach the facade.
Chaque lentille comporte un axe optique et deux sommets ménagés à une extrémité respective de l'axe optique de ladite lentille. Les axes optiques des lentilles sont orientés parallèlement les uns aux autres; en étant également orientés orthogonalement d'une part au plan d'extension générale du moyen d'affichage et d'autre part au premier et au deuxième plan. Par ailleurs, chaque lentille du premier groupe est placée à l'aplomb d'une lentille correspondante du deuxième groupe. Autrement dit, chaque lentille du premier groupe est placée en vis-à-vis d'une lentille correspondante du deuxième groupe, de telle sorte que leurs axes optiques respectifs sont confondus et qu'un des sommets de la lentille du premier groupe est en contact avec un des sommets de la lentille correspondante du deuxième groupe.Each lens has an optical axis and two apices formed at a respective end of the optical axis of said lens. The optical axes of the lenses are oriented parallel to each other; being also oriented orthogonally on the one hand to the general extension plane of the display means and on the other hand to the first and second planes. Moreover, each lens of the first group is placed in line with a corresponding lens of the second group. In other words, each lens of the first group is placed vis-à-vis a corresponding lens of the second group, so that their respective optical axes are coincident and one of the vertices of the lens of the first group is in contact with one of the vertices of the corresponding lens of the second group.
L'utilisation d'un dispositif d'affichage équipé d'un tel système optique d'imagerie présente des inconvénients auxquels il convient de remédier. En premier lieu, dans le cas où le dispositif d'affichage comporte une pluralité de sources lumineuses, l'image de ladite information vue par l'utilisateur à travers la façade est susceptible d'être constituée d'une pluralité d'images partielles de ladite information, ce qui est particulièrement insatisfaisant pour l'utilisateur.The use of a display device equipped with such an optical imaging system has drawbacks that must be remedied. In the first place, in the case where the display device comprises a plurality of light sources, the image of the said information seen by the user through the facade is likely to consist of a plurality of partial images of said information, which is particularly unsatisfactory for the user.
De plus, l'angle de vue d'une image nette pour l'utilisateur est susceptible d'être restreint. Plus précisément, un utilisateur situé dans une zone périphérique du dispositif d'affichage ne peut visualiser clairement l'information, ce qui est contraignant, voire dangereux pour un utilisateur conducteur du véhicule.In addition, the angle of view of a sharp image for the user is likely to be restricted. More precisely, a user located in a peripheral zone of the display device can not clearly visualize the information, which is restrictive or even dangerous for a user who is driving the vehicle.
Enfin, une ou plusieurs images parasites de ladite information sont susceptibles d'être projetées sur la façade et/ou à proximité de cette dernière. Ces images parasites induisent des nuisances visuelles pour l'utilisateur qu'il est souhaitable de réduire au maximum.Finally, one or more parasitic images of said information are likely to be projected on the facade and / or near the latter. These parasitic images induce visual nuisances for the user that it is desirable to reduce to a maximum.
Objet de l'invention.Object of the invention
Le but de la présente invention est de proposer un système optique comprenant une pluralité de lentilles réparties en au moins un premier groupe comprenant au moins deux lentilles et un deuxième groupe comprenant au moins deux lentilles, au moins une lentille du premier groupe étant disposée à l'aplomb d'une lentille correspondante du deuxième groupe, ledit système optique étant apte à focaliser une image sur une façade de conformation relativement quelconque, sans générer d'images parasites, la dite image étant nette, précise et intègre. Un autre but de la présente invention est de proposer un dispositif d'affichage comprenant un tel système optique, un tel dispositif d'affichage étant destiné à afficher une information relative à la mise en œuvre d'un accessoire d'un véhicule automobile et étant efficace, peu encombrant et fiable pour être à même de délivrer à un utilisateur ladite information sans distordre cette dernière, ni l'altérer et sans divertir l'utilisateur par la création d'artefacts visuels. Le système optique de la présente invention est un système optique comprenant une pluralité de lentilles réparties en au moins un premier groupe comprenant au moins deux lentilles et un deuxième groupe comprenant au moins deux lentilles. Au moins une lentille du premier groupe est disposée à l'aplomb d'une lentille correspondante du deuxième groupe.The object of the present invention is to provide an optical system comprising a plurality of lenses distributed in at least a first group comprising at least two lenses and a second group comprising at least two lenses, at least one lens of the first group being disposed at least one lens. plumb with a corresponding lens of the second group, said optical system being able to focus an image on a façade of relatively any conformation, without generating parasitic images, the said image being clear, precise and integrated. Another object of the present invention is to provide a display device comprising such an optical system, such a display device being intended to display information relating to the implementation of an accessory of a motor vehicle and being efficient, compact and reliable to be able to deliver a user said information without distorting the latter, nor alter it and without entertaining the user by the creation of visual artifacts. The optical system of the present invention is an optical system comprising a plurality of lenses distributed in at least a first group comprising at least two lenses and a second group comprising at least two lenses. At least one lens of the first group is disposed in line with a corresponding lens of the second group.
Selon la présente invention, ledit système optique est équipé de moyens de canalisation de rayons lumineux entrants à l'intérieur d'une quelconque lentille du premier groupe vers la lentille correspondante du deuxième groupe.According to the present invention, said optical system is provided with means for channeling incoming light rays inside any lens of the first group to the corresponding lens of the second group.
Ces dispositions visent à interdire le passage de rayons lumineux entrants à l'intérieur d'une quelconque lentille du premier groupe vers une lentille du deuxième groupe autre que celle disposée à l'aplomb de ladite lentille du premier groupe. Les rayons lumineux entrants à l'intérieur d'une lentille du premier groupe sont orientés par l'intermédiaire des moyens de canalisation vers la lentille correspondante du deuxième groupe placée à l'aplomb de la lentille du premier groupe, pour éviter une dispersion de ces rayons lumineux entrants vers une autre lentille du deuxième groupe que celle située en regard de la lentille considérée du premier groupe.These provisions are intended to prohibit the passage of incoming light rays inside any lens of the first group to a lens of the second group other than that arranged in line with said lens of the first group. The incoming light rays inside a lens of the first group are oriented via the channeling means to the corresponding lens of the second group placed in line with the lens of the first group, to avoid a dispersion of these incoming light rays towards another lens of the second group than that located opposite the lens considered of the first group.
Il en découle qu'une image de ladite information, projetée sur une façade est nette, précise et intègre. Il en découle aussi une absence d'image parasite projetée sur ladite façade.It follows that an image of said information, projected on a facade is clear, precise and honest. It also results in an absence of parasitic image projected on said facade.
Lesdits moyens de canalisation comprennent avantageusement une grille principale qui est interposée entre les lentilles du premier groupe et les lentilles du deuxième groupe, la grille principale comportant un bord distal en appui contre les lentilles du premier groupe et un bord proximal en appui contre les lentilles du deuxième groupe. La grille principale comporte préférentiellement une pluralité de canaux principaux qui s'étendent entre le bord distal et le bord proximal de ladite grille principale.Said channeling means advantageously comprise a main gate which is interposed between the lenses of the first group and the lenses of the second group, the main gate having a distal edge bearing against the lenses of the first group and a proximal edge bearing against the lenses of the first group. second group. The main gate preferably comprises a plurality of main channels which extend between the distal edge and the proximal edge of said main gate.
Chaque canal principal est avantageusement ménagé à l'aplomb d'un couple correspondant de lentilles du premier groupe et du deuxième groupe disposées à l'aplomb l'une de l'autre.Each main channel is advantageously arranged in line with a corresponding pair of lenses of the first group and the second group arranged in alignment with one another.
De préférence, chaque canal principal s'étend longitudinalement entre un premier orifice qui coiffe une lentille du premier groupe et un deuxième orifice qui coiffe la lentille correspondante du deuxième groupe.Preferably, each main channel extends longitudinally between a first orifice which caps a lens of the first group and a second orifice which caps the corresponding lens of the second group.
Les lentilles du premier groupe sont notamment disposées selon une surface S1 tandis que les lentilles du deuxième groupe sont notamment disposées selon une surface S2.The lenses of the first group are arranged in particular on a surface S1 while the lenses of the second group are in particular arranged along a surface S2.
La surface S1 est par exemple conformée en un premier plan P1.The surface S1 is for example formed in a first plane P1.
Chaque lentille du premier groupe comporte préférentiellement un premier axe optique A1 qui est orienté orthogonalement audit premier plan P1 et en ce que chaque lentille du deuxième groupe comporte un deuxième axe optique A2 qui est également orienté orthogonalement audit premier plan P1.Each lens of the first group preferably comprises a first optical axis A1 which is oriented orthogonally to said first plane P1 and in that each lens of the second group comprises a second optical axis A2 which is also oriented orthogonally to said first plane P1.
Les premier A1 et deuxième A2 axes optiques respectifs de lentilles du premier groupe et du deuxième groupe d'un même couple sont notamment confondus.The first A1 and second A2 respective optical axes of lenses of the first group and the second group of the same pair are especially confused.
Chaque canal principal comporte avantageusement un axe de symétrie A qui est confondu aux premier A1 et deuxième A2 axes optiques.Each main channel advantageously comprises an axis of symmetry A which coincides with the first A1 and second A2 optical axes.
La grille principale est par exemple agencée selon un plan de grille P' qui est ménagé parallèlement au dit premier plan P1. La grille principale est notamment réalisée à partir d'un matériau optiquement opaque.The main gate is for example arranged in a grid plane P 'which is formed parallel to said first plane P1. The main gate is in particular made from an optically opaque material.
Chaque canal principal loge avantageusement une lentille d'un troisième groupe qui est identique aux lentilles du premier et deuxième groupe.Each main channel advantageously houses a lens of a third group which is identical to the lenses of the first and second groups.
Chaque lentille du troisième groupe comporte préférentiellement un troisième axe optique A3 qui est confondu avec les premier A1 et deuxième A2 axes optiques.Each lens of the third group preferably comprises a third optical axis A3 which coincides with the first A1 and second A2 optical axes.
Chaque lentille du troisième groupe est de préférence placée à une égale distance X des lentilles du premier et deuxième groupe entre lesquelles la lentille du troisième groupe est interposée.Each lens of the third group is preferably placed at an equal distance X of the lenses of the first and second group between which the lens of the third group is interposed.
Les lentilles du troisième groupe sont avantageusement disposées selon un troisième plan P3 qui est ménagé parallèlement au premier plan P1.The lenses of the third group are advantageously arranged in a third plane P3 which is arranged parallel to the first plane P1.
Les moyens de canalisation comprennent préférentiellement au moins une grille secondaire munie de canaux secondaires.The channeling means preferably comprise at least one secondary grid provided with secondary channels.
Chaque canal secondaire loge avantageusement une lentille respective du premier groupe.Each secondary channel advantageously accommodates a respective lens of the first group.
Chaque canal secondaire loge de préférence une lentille respective du deuxième groupe.Each secondary channel preferably houses a respective lens of the second group.
Chaque lentille du premier groupe est par exemple disposée à l'aplomb d'un pixel respectif que comporte le moyen d'affichage.Each lens of the first group is for example disposed vertically above a respective pixel that comprises the display means.
Le dispositif d'affichage de la présente invention est principalement reconnaissable en ce qu'il s'agit d'un dispositif d'affichage d'au moins une information comprenant un moyen d'affichage, une façade et un tel système optique, ledit moyen d'affichage générant ladite information sous la forme de rayons lumineux et étant disposé en vis-à-vis de la façade, ledit système optique étant interposé entre le moyen d'affichage et la façade pour projeter ladite information sur la façade.The display device of the present invention is mainly recognizable in that it is a device for displaying at least one piece of information comprising a display means, a facade and such a system. optical, said display means generating said information in the form of light rays and being disposed opposite the facade, said optical system being interposed between the display means and the facade for projecting said information on the facade .
Ladite surface S1 présente par exemple une conformation similaire à une conformation C, P" de la façade.Said surface S1 has for example a conformation similar to a conformation C, P "of the facade.
Ladite surface S1 présente par exemple encore une conformation symétrique à une conformation C, P" de la façade par rapport à un plan de symétrie interposé entre la façade et la surface S1.Said surface S1 for example still has a conformation symmetrical to a conformation C, P "of the facade with respect to a plane of symmetry interposed between the facade and the surface S1.
Selon une première forme de réalisation, les lentilles du premier groupe sont optiquement différentes les unes des autres pour focaliser une image de ladite information sur la façade.According to a first embodiment, the lenses of the first group are optically different from each other for focusing an image of said information on the facade.
Selon une deuxième forme de réalisation, les lentilles du deuxième groupe sont optiquement différentes les unes des autres pour focaliser une image de ladite information sur la façade.According to a second embodiment, the lenses of the second group are optically different from each other for focusing an image of said information on the facade.
La façade est par exemple agencée selon une ligne incurvée C dont le rayon de courbure est indifféremment dirigé vers l'intérieur du dispositif d'affichage ou vers l'extérieur de ce dernier.The facade is for example arranged along a curved line C whose radius of curvature is indifferently directed towards the inside of the display device or towards the outside of the latter.
Le premier plan P1 est de préférence ménagé parallèlement à un plan d'extension générale P du moyen d'affichage.The first plane P1 is preferably arranged parallel to a general extension plane P of the display means.
Description des figures. La présente invention sera mieux comprise, et des détails en relevant apparaîtront, à la lecture de la description qui va être faite de variantes de réalisation en relation avec les figures des planches annexées, dans lesquelles :Description of the figures. The present invention will be better understood, and details will arise from reading the description which will be made of variants in connection with the figures of the attached plates, in which:
La fig.1 est une illustration schématique d'un dispositif d'affichage d'informations selon la présente invention.Fig.1 is a schematic illustration of an information display device according to the present invention.
La fig.2 est une illustration schématique d'une première variante de réalisation du dispositif illustré sur la figure précédente.Fig.2 is a schematic illustration of a first alternative embodiment of the device shown in the previous figure.
La fig.3 est une illustration schématique d'une deuxième variante de réalisation du dispositif illustré sur la fig.1. La fig.4 est une illustration schématique d'une troisième variante de réalisation du dispositif illustré sur la fig.1.FIG. 3 is a schematic illustration of a second alternative embodiment of the device illustrated in FIG. Fig.4 is a schematic illustration of a third alternative embodiment of the device shown in Fig.1.
La fig.5 est une illustration schématique d'une quatrième variante de réalisation du dispositif illustré sur la fig.1.FIG. 5 is a schematic illustration of a fourth variant embodiment of the device illustrated in FIG.
La fig.6 est une illustration schématique d'une cinquième variante de réalisation du dispositif illustré sur la fig.1.FIG. 6 is a schematic illustration of a fifth variant embodiment of the device illustrated in FIG.
La fig.7 est une illustration schématique d'une sixième variante de réalisation du dispositif illustré sur la fig.1.FIG. 7 is a schematic illustration of a sixth variant embodiment of the device illustrated in FIG.
La fig.8 est une illustration schématique d'une septième variante de réalisation du dispositif illustré sur la fig.1.FIG. 8 is a schematic illustration of a seventh variant embodiment of the device illustrated in FIG.
Sur la fig.1 , un dispositif d'affichage 1 d'une information 2 relative à la mise en œuvre d'un accessoire 3 est destiné à équiper un véhicule automobile.In Fig.1, a display device 1 of information 2 relating to the implementation of an accessory 3 is intended to equip a motor vehicle.
L'accessoire 3 est notamment constitué d'une installation de ventilation, de chauffage et/ou de climatisation mais peut être de manière analogue constitué d'un téléphone portable, d'un système de localisation par satellite, d'un ordinateur de bord ou de tout autre appareil qui n'est pas indispensable à la fonction première procurée par le véhicule automobile, à savoir son déplacement. Le dispositif d'affichage 1 est prévu pour être disposé à l'intérieur de l'habitacle du véhicule de manière à délivrer à un utilisateur du véhicule ladite information 2. Cette dernière 2 est par exemple une donnée numérique, telle que la température de l'air contenu à l'intérieur de l'habitacle, ou un pictogramme représentant schématiquement le véhicule. Le dispositif d'affichage 1 est susceptible d'être un dispositif interactif permettant à l'utilisateur de commander la mise en œuvre de l'accessoire 3. Dans ce cas, le dispositif d'affichage 1 est par exemple organisé en un dispositif tactile équipé des éléments électroniques nécessaires à une mise en œuvre contrôlée de l'accessoire 3.The accessory 3 consists in particular of a ventilation, heating and / or air conditioning installation but may similarly consist of a mobile phone, a satellite positioning system, a computer on board or any other apparatus that is not essential to the primary function of the motor vehicle, namely its movement. The display device 1 is intended to be arranged inside the passenger compartment of the vehicle so as to deliver a user of the vehicle said information 2. The latter 2 is for example a digital data, such as the temperature of the vehicle. air contained inside the passenger compartment, or a pictogram representing schematically the vehicle. The display device 1 may be an interactive device allowing the user to control the implementation of the accessory 3. In this case, the display device 1 is for example organized in a touch device equipped electronic elements necessary for a controlled implementation of the accessory 3.
Le dispositif d'affichage 1 comprend un moyen d'affichage 4 pour afficher l'information 2 et une façade 5 sur laquelle l'utilisateur visualise une image 6 de ladite l'information 2. Le moyen d'affichage 4 est couramment un écran plat qui est conformé selon un plan d'extension générale P. Le moyen d'affichage 4 est un écran de nature relativement quelconque, par exemple du type « LCD », « TFT » , « OLED », « VFD » ou analogue, et est susceptible d'être équipé de plusieurs sources lumineuses 7, notamment dans le cas où l'écran est de type « LCD » ou « TFT » ; les sources lumineuses 7 étant disposées en regard d'une face arrière 8 du moyen d'affichage 4, pour permettre un retro-éclairage de ce dernier 4 et consécutivement autoriser l'affichage de l'information 2.The display device 1 comprises a display means 4 for displaying the information 2 and a facade 5 on which the user views an image 6 of said information 2. The display means 4 is currently a flat screen which is conformed according to a general extension plane P. The display means 4 is a screen of relatively arbitrary nature, for example of the "LCD", "TFT", "OLED", "VFD" or similar type, and is capable of being equipped with several light sources 7, especially in the case where the screen is of the "LCD" or "TFT" type; the light sources 7 being arranged facing a rear face 8 of the display means 4, to allow a backlighting of the latter 4 and consecutively allow the display of the information 2.
Notamment pour protéger le moyen d'affichage 4, la façade 5 est disposée en vis- à-vis d'une face avant 9 du moyen d'affichage 4. Généralement, la façade 5 recouvre le moyen d'affichage 4 pour le masquer lorsqu'il est éteint, notamment pour des raisons esthétiques. Ladite façade 5 est disposée à une distance D du moyen d'affichage 4, un espace E étant ménagé entre le moyen d'affichage 4 et la façade 5. Par ailleurs, pour des raisons esthétiques notamment, il est souhaité que la façade 5 soit granuleuse et présente des irrégularités, telles que des aspérités et/ou des creux.In particular to protect the display means 4, the front panel 5 is arranged vis-à-vis a front face 9 of the display means 4. Generally, the front 5 covers the display means 4 to hide it when it is off, especially for aesthetic reasons. Said facade 5 is disposed at a distance D from the display means 4, a space E being arranged between the display means 4 and the facade 5. Furthermore, for aesthetic reasons in particular, it is desired that the facade 5 be granular and has irregularities, such as asperities and / or depressions.
Un système optique d'imagerie 10 est interposé entre le moyen d'affichage 4 et la façade 5 pour focaliser l'image 6 de l'information 2 sur la façade 5. Dans sa généralité, le système optique d'imagerie 10 est un système de nature relativement quelconque apte à faire converger en un point de la façade 5 des rayons lumineux entrants 11 à l'intérieur du système optique d'imagerie 10. Ce dernier 10 comprend au moins une pluralité de lentilles optiques 12 qui sont réparties en un premier groupe 13 de lentilles 12 et un deuxième groupe 14 de lentilles 12, une lentille 12 du premier groupe 13 étant disposée en regard d'une lentille 12 du deuxième groupe 14. Ainsi, les lentilles 12 sont agencées en couple 15 de lentilles 12 superposées formé d'une lentille 12 du premier groupe 13 et d'une lentille 12 du deuxième groupe 14. Chaque lentille 12 du premier groupe 13 comporte un axe optique A1 qui est orienté orthogonalement au plan d'extension générale P du moyen d'affichage 4 et chaque lentille 12 du deuxième groupe 14 comporte un deuxième axe optique A2 qui est également orienté orthogonalement plan général d'extension P du moyen d'affichage 4. Les axes optiques A1 et A2 d'un couple 15 de lentilles 12 superposées du premier groupe 13 et du deuxième groupe 14 sont confondus.An imaging optical system 10 is interposed between the display means 4 and the facade 5 to focus the image 6 of the information 2 on the facade 5. In general, the optical imaging system 10 is a system of any relatively arbitrary nature capable of converging at a point of the facade 5 of the incoming light rays 11 inside the imaging optical system 10. the last 10 comprises at least a plurality of optical lenses 12 which are distributed in a first group 13 of lenses 12 and a second group 14 of lenses 12, a lens 12 of the first group 13 being arranged facing a lens 12 of the second group 14. Thus, the lenses 12 are arranged in pairs of lenses 12 superimposed formed of a lens 12 of the first group 13 and a lens 12 of the second group 14. Each lens 12 of the first group 13 has an optical axis A1 which is oriented orthogonally to the general extension plane P of the display means 4 and each lens 12 of the second group 14 comprises a second optical axis A2 which is also oriented orthogonally general extension plane P of the display means 4. The axes A1 and A2 optics of a pair of lenses 12 superimposed of the first group 13 and the second group 14 are combined.
Les lentilles 12 du premier groupe 13 sont disposées selon un premier plan P1 qui est ménagé parallèlement au plan d'extension générale P du moyen d'affichage 4. Les lentilles 12 du premier groupe 13 sont par exemple disposées à l'aplomb d'un pixel 16 respectif que comporte le moyen d'affichage 4. Toutefois, les lentilles 12 du premier groupe 13 sont susceptibles d'être disposées différemment par rapport aux pixels 16 que comporte le moyen d'affichage 4. On comprendra que dans le plan P1 , les lentilles 12 du premier groupe 13 sont susceptibles d'être agencées les unes par rapport aux autres selon un pavage relativement quelconque, préférentiellement hexagonal, voire carré ou rectangulaire, selon un ordre du plus efficace optiquement au moins efficace.The lenses 12 of the first group 13 are arranged in a first plane P1 which is arranged parallel to the general plane of extension P of the display means 4. The lenses 12 of the first group 13 are for example arranged in line with a respective pixel 16 of the display means 4. However, the lenses 12 of the first group 13 are likely to be arranged differently with respect to the pixels 16 that comprises the display means 4. It will be understood that in the plane P1, the lenses 12 of the first group 13 may be arranged relative to each other in a relatively arbitrary tiling, preferably hexagonal, or even square or rectangular, in an order of the most effective optically at least effective.
Chaque lentille 12 comporte une face d'entrée 17 à travers laquelle pénètrent les rayons lumineux entrants 11 et une face de sortie 18 à travers laquelle des rayons lumineux sortent de la lentille 12. La face d'entrée 17 et la face de sortieEach lens 12 has an input face 17 through which the incoming light rays 11 penetrate and an exit face 18 through which light rays emanate from the lens 12. The input face 17 and the exit face
18 comportent un sommet 19 respectif défini comme un point de la surface de la lentille 12 par lequel passe l'axe optique A1 , A2 de la lentille 12. Cette dernière 12 présente une épaisseur L définie comme la distance entre les deux sommets18 comprise a respective apex 19 defined as a point on the surface of the lens 12 through which the optical axis A1, A2 of the lens 12 passes. The latter 12 has a thickness L defined as the distance between the two vertices
19 de la lentille 12. Par ailleurs, chaque lentille 12 du premier groupe 13 est située à une distance L1 du moyen d'affichage 4 tandis que chaque lentille 12 du deuxième groupe 14 est située à une distance L2 de la surface de projection 5. Enfin, une lentille 12 du premier groupe 13 est placée à une distance H de la lentille 12 du deuxième groupe 14 avec laquelle elle constitue le couple 15 de lentilles 12 superposées.19 of the lens 12. Furthermore, each lens 12 of the first group 13 is located at a distance L1 from the display means 4 while each lens 12 of the second group 14 is located at a distance L2 from the projection surface 5. Finally, a lens 12 of the first group 13 is placed at a distance H from the lens 12 of the second group 14 with which it constitutes the pair of lenses 12 superimposed.
Les lentilles 12 du premier 13 et du deuxième 14 groupe sont indifféremment réalisées à partir de verre par l'intermédiaire d'un procédé de photolithographie ou d'un procédé d'usinage, ou à partir d'une matière plastique à partir d'un procédé d'injection ou de pressage.The lenses 12 of the first 13 and the second 14 group are indifferently made from glass by means of a photolithography process or a machining method, or from a plastic material from a injection or pressing process.
Un tel système optique d'imagerie 10 présente l'inconvénient de délivrer à l'utilisateur une image 6 de l'information 2 qui est floue et/ou tronquée. De plus, des images parasites à l'image souhaitée de l'information 2 apparaissent sur et/ou à proximité de la façade 5. Enfin, un tel système optique d'imagerie 10 n'est pas adapté pour une façade 5 de conformation relativement quelconque.Such an optical imaging system 10 has the disadvantage of delivering to the user an image 6 of the information 2 which is fuzzy and / or truncated. In addition, parasitic images at the desired image of the information 2 appear on and / or near the facade 5. Finally, such an optical imaging system 10 is not suitable for a facade 5 relatively conformation any.
C'est pourquoi il est avantageusement proposé par la présente invention d'équiper le système optique d'imagerie 10 de moyens de canalisation 20 de rayons lumineux entrants 11 à l'intérieur d'une quelconque lentille 12 du premier groupe 13 vers la lentille 12 correspondante du deuxième groupe 14 avec laquelle ladite lentille 12 du premier groupe 13 forme un couple 15 de lentilles 12 en regard l'une de l'autre, c'est-à-dire la lentille 12 du deuxième groupe 14 dont le deuxième axe optique A2 est confondu avec le premier axe optique A1 de la lentille 12 considérée du premier groupe 13.That is why it is advantageously proposed by the present invention to equip the optical imaging system 10 of channeling means 20 of incoming light rays 11 inside any lens 12 of the first group 13 towards the lens 12 corresponding of the second group 14 with which said lens 12 of the first group 13 forms a pair 15 of lenses 12 facing one another, that is to say the lens 12 of the second group 14 whose second optical axis A2 is coincident with the first optical axis A1 of the lens 12 considered of the first group 13.
Ces dispositions sont telles que le système optique d'imagerie 10 est apte à délivrer à l'utilisateur une image 6 nette et précise, quelque soit la forme et la taille de l'information 2. Ces dispositions visent également à permettre une visualisation homogène et intègre de l'image 6 par l'utilisateur. Selon une première, une deuxième et une troisième variante de réalisation de la présente invention respectivement représentées sur les fig.2 à fig.4, les moyens de canalisation 10 comprennent une grille principale 24 qui est interposée entre les lentilles 12 du premier groupe 13 et les lentilles 12 du deuxième groupe 14 en prenant appui contre les unes et les autres. Plus précisément, la grille principale 24 s'étend selon un plan de grille P' parallèle au plan général d'extension P de le moyen d'affichage 4. De part et d'autre du plan P', la grille principale 24 comporte un bord distal 25 qui est en appui contre les lentilles 12 du premier groupe 13 et un bord proximal 26 qui est en appui contre les lentilles 12 du deuxième groupe 14. Selon ces variantes, les bords distal 25 et proximal 26 sont plans et parallèles.These arrangements are such that the optical imaging system 10 is capable of delivering to the user a clear and precise image 6, whatever the shape and size of the information 2. These provisions are also intended to allow a homogeneous visualization and integrates image 6 by the user. According to a first, a second and a third embodiment of the present invention respectively shown in Fig.2 to Fig.4, the channeling means 10 comprise a main gate 24 which is interposed between the lenses 12 of the first group 13 and the lenses 12 of the second group 14 taking support against each other. More specifically, the main gate 24 extends in a grid plane P 'parallel to the general plane of extension P of the display means 4. On either side of the plane P', the main gate 24 comprises a distal edge 25 which abuts against the lenses 12 of the first group 13 and a proximal edge 26 which bears against the lenses 12 of the second group 14. According to these variants, the distal 25 and proximal edges 26 are flat and parallel.
La grille principale 24 est munie de canaux principaux 27 qui la traversent de part en part du bord distal 25 au bord proximal 26 de ladite grille principale 24. Les canaux principaux 27 sont parallèles les uns aux autres et s'étendent longitudinalement selon un axe de symétrie A qui est confondu aux premier A1 et deuxième A2 axes optiques des lentilles 12 du premier 13 et deuxième 14 groupe du couple 15 de lentilles 12 correspondantes.The main gate 24 is provided with main channels 27 which pass right through from the distal edge 25 to the proximal edge 26 of said main gate 24. The main channels 27 are parallel to each other and extend longitudinally along an axis of symmetry A which is confused with the first A1 and second A2 optical axes of the lenses 12 of the first 13 and second 14 group of the pair 15 of lenses 12 corresponding.
Chaque canal principal 27 est ménagé à l'aplomb d'un couple 15 correspondant de lentilles 12 du premier 13 et du deuxième 14 groupe. Plus précisément, chaque canal principal 27 est délimité longitudinalement par un premier orifice 28 qui coiffe une lentille 12 du premier groupe 13 et un deuxième orifice 29 qui coiffe la lentille 12 correspondante du deuxième groupe 14.Each main channel 27 is arranged in line with a corresponding pair of lenses 12 of the first 13 and the second 14 group. More specifically, each main channel 27 is delimited longitudinally by a first orifice 28 which caps a lens 12 of the first group 13 and a second orifice 29 which caps the corresponding lens 12 of the second group 14.
La grille principale 24 est réalisée à partir d'un matériau optiquement opaque, de telle sorte que des rayons lumineux pénétrant à l'intérieur d'un canal principal 27 par l'intermédiaire du premier orifice 28 ne puissent sortir dudit canal principal 27 que par l'intermédiaire du deuxième orifice 29 du canal principal considéré 27. Ces dispositions sont telles qu'à partir d'un coiffage de la face de sortie 18 des lentilles 12 du premier groupe 13 et de la face d'entrée 17 des lentilles 12 du deuxième groupe 14, les rayons lumineux entrants 11 à l'intérieur d'une lentille 12 du premier groupe 13 ne peuvent se propager que vers la lentille correspondante 12 du deuxième groupe 14 avec laquelle elle forme un couple 15 de lentilles 12 superposées. Ainsi, l'information 2 affichée sur le moyen d'affichage 4 est reproduite à l'identique sur la façade 5, sans apparition d'images parasites.The main gate 24 is made from an optically opaque material, so that light rays penetrating inside a main channel 27 through the first orifice 28 can only exit from said main channel 27 by through the second port 29 of the main channel considered 27. These arrangements are such that from a styling of the exit face 18 of the lenses 12 of the first group 13 and the input face 17 of the lenses 12 of the second group 14, the incoming light rays 11 inside a lens 12 of the first group 13 can only propagate towards the corresponding lens 12 of the second group 14 with which it forms a pair of lenses 12 superimposed. Thus, the information 2 displayed on the display means 4 is reproduced identically on the facade 5, without appearance of parasitic images.
Plus particulièrement sur la fig.3, chaque canal principal 27 de la grille principale 24 loge une lentille 12 d'un troisième groupe 30 qui présentent un pas identique aux lentilles 12 des premier 13 et deuxième 14 groupe, et qui sont convergentes.More particularly in Fig.3, each main channel 27 of the main gate 24 houses a lens 12 of a third group 30 which have a pitch identical to the lenses 12 of the first 13 and second 14 group, and which are convergent.
Les lentilles 12 du troisième groupe 30 sont disposées selon un troisième plan P3 qui est ménagé parallèlement au premier plan P1. Préférentiellement, les lentillesThe lenses 12 of the third group 30 are arranged in a third plane P3 which is arranged parallel to the first plane P1. Preferentially, the lenses
12 du troisième groupe 30 sont identiques aux lentilles 12 des premier 13 et deuxième 14 groupe.12 of the third group 30 are identical to the lenses 12 of the first 13 and second 14 group.
Chaque lentille 12 du troisième groupe 30 comporte un troisième axe optique A3 qui est confondu avec les premier A1 et deuxième A2 axes optiques. Chaque lentille 12 du troisième groupe 30 est placée à une égale distance X des lentilles 12 du premier 13 et deuxième 14 groupe entre lesquelles la lentille 12 du troisième groupe 30 est interposée.Each lens 12 of the third group 30 has a third optical axis A3 which coincides with the first A1 and second A2 optical axes. Each lens 12 of the third group 30 is placed at an equal distance X from the lenses 12 of the first 13 and second 14 groups between which the lens 12 of the third group 30 is interposed.
Selon la variante de réalisation représentée sur la fig.4, les moyens de canalisation 10 comprennent, outre la grille principale 24, deux grilles secondaires 31 ,32 chacune munie de canaux secondaires 33. Chaque canal secondaire 33 d'une première grille secondaire 31 loge une lentille respective 12 du premier groupe 13 tandis que chaque canal secondaire 33 d'une deuxième grille secondaire 32 loge une lentille respective 12 du deuxième groupe 14. Selon une forme de réalisation non représentée, les moyens de canalisation 10 peuvent aussi comprendre, outre la grille principale 24, exclusivement l'une 31 ou l'autre 32 des grilles secondaires 31 ,32. Les grilles secondaires 31 ,32 sont plus particulièrement nécessaires si l'épaisseur L des lentilles 12 n'est plus très inférieure à la distance H, notamment lorsque le rapport H/L est de l'ordre de 3 ou moins.According to the alternative embodiment shown in FIG. 4, the channeling means 10 comprise, in addition to the main gate 24, two secondary grids 31, 32 each provided with secondary channels 33. Each secondary channel 33 of a first secondary grid 31 houses. a respective lens 12 of the first group 13 while each secondary channel 33 of a second secondary grid 32 houses a respective lens 12 of the second group 14. According to an embodiment not shown, the channeling means 10 may also comprise, in addition to the main grid 24, only one 31 or the other 32 secondary grids 31, 32. The secondary grids 31, 32 are more particularly necessary if the thickness L of the lenses 12 is not much less than the distance H, especially when the H / L ratio is of the order of 3 or less.
Selon une quatrième variante de réalisation illustrée sur la fig.5, les moyens de canalisation 10 sont uniquement constitués de deux grilles secondaires 31 ,32 telles que définies ci-dessus. Cette variante est particulièrement adaptée dans le cas où les deux groupes 13,14 de lentilles 12 se touchent quasiment.According to a fourth variant embodiment illustrated in FIG. 5, the channeling means 10 consist solely of two secondary grids 31, 32 as defined above. This variant is particularly suitable in the case where the two groups 13,14 of lenses 12 are almost touching.
On remarquera que selon les première, deuxième, troisième et quatrième variantes de réalisation respectivement illustrées sur les fig.2 à fig.5, les lentilles 12 du deuxième groupe 14 sont disposées selon un deuxième plan P2 qui est ménagé parallèlement audit premier plan P1 et à un plan P" de conformation générale de la façade 5.It will be noted that according to the first, second, third and fourth embodiments respectively illustrated in Fig.2 to Fig.5, the lenses 12 of the second group 14 are arranged in a second plane P2 which is formed parallel to said first plane P1 and to a plane P "of general conformation of the facade 5.
Selon une cinquième et une sixième variante de réalisation respectivement illustrées sur les fig.6 et fig.7, la façade 5 est agencée selon une courbe C. dont le rayon de courbure 22 est dirigé vers le moyen d'affichage 4 et dont le centre de courbure 23 est indifféremment situé entre le moyen d'affichage 4 et la façade de projection 5 ou disposé en vis-à-vis de la face arrière 8 du moyen d'affichage 4. Selon une autre forme de réalisation, le rayon de courbure est orienté vers l'extérieur dudit dispositif d'affichage.According to a fifth and a sixth embodiment respectively illustrated in FIGS. 6 and 7, the facade 5 is arranged in a curve C whose radius of curvature 22 is directed towards the display means 4 and whose center Bending 23 is indifferently located between the display means 4 and the projection front 5 or disposed vis-à-vis the rear face 8 of the display means 4. According to another embodiment, the radius of curvature is oriented towards the outside of said display device.
Plus particulièrement selon la cinquième variante de réalisation illustrée sur la fig.6, les lentilles 12 du deuxième groupe 14 sont disposées selon une surface incurvée S2 présentant un rayon de courbure 21 dirigé vers le moyen d'affichageMore particularly according to the fifth embodiment shown in FIG. 6, the lenses 12 of the second group 14 are arranged in a curved surface S2 having a radius of curvature 21 directed towards the display means
4. La distribution des lentilles 12 du deuxième groupe 14 est similaire à la conformation de la façade 5, chaque couple 15 de lentilles 12 fournissant un grandissement égal à 1. Dans ce cas, une image intermédiaire 34 de l'information 2 par l'intermédiaire des lentilles du premier groupe 13 est plane. On notera à ce stade de la description que, selon les variantes illustrées précédemment, les lentilles 12, indifféremment du premier groupe 13 et du deuxième groupe 14 sont identiques les unes aux autres. A contrario, selon la sixième variante de réalisation illustrée sur la fig.7, les lentilles 12 du deuxième groupe 14 sont adaptées de manière à rendre courbe ladite image intermédiaire 34 projetée sur la façade 5. Pour ce faire, les lentilles 12 du deuxième groupe 14 sont différentes les unes des autres, d'un couple 15 de lentilles 12 du premier 13 et deuxième 14 groupe, de telle sorte que chaque couple 15 de lentilles 12 travaille avec un grandissement égal à 1.4. The distribution of the lenses 12 of the second group 14 is similar to the conformation of the facade 5, each pair of lenses 12 providing a magnification equal to 1. In this case, an intermediate image 34 of the information 2 by the intermediate of the lenses of the first group 13 is flat. It will be noted at this stage of the description that, according to the variants illustrated above, the lenses 12, regardless of the first group 13 and the second group 14 are identical to each other. In contrast, according to the sixth embodiment illustrated in FIG. 7, the lenses 12 of the second group 14 are adapted so as to curve said intermediate image 34 projected on the facade 5. To do this, the lenses 12 of the second group 14 are different from each other, a pair of lenses 12 of the first 13 and second 14 group, such that each pair of lenses 12 operates with a magnification equal to 1.
Selon une septième variante de réalisation illustrée sur la fig.8, les lentilles 12 du premier groupe 13 sont agencées selon une surface courbe S1 , auquel cas la courbure de cette dernière S1 est inversée par rapport au cas où seules les lentilles 12 du deuxième groupe 14 sont agencées selon la surface S2. Il est également envisageable d'agencer simultanément les lentilles 12 du premier groupe 13 selon une surface incurvée S1 et les lentilles 12 du deuxième groupe 14 selon une surface incurvée S2, auquel cas la courbure de la surface S2 est de même conformation, mais moins accentuée, que la courbure de la façade 5 alors que la courbure de la surface S1 est de conformation opposée, mais plus accentuée, que celle de la façade 5. L'effet des courbures des surfaces S1 et S2 s'additionne pour s'adapter à la courbure de la façade 5. Les courbures des surfaces S1 et S2 satisfont à une règle qui préconise que tous les couples 15 de lentilles 12 fournissent un grandissement de 1. According to a seventh variant embodiment illustrated in FIG. 8, the lenses 12 of the first group 13 are arranged in a curved surface S1, in which case the curvature of the latter S1 is reversed with respect to the case where only the lenses 12 of the second group 14 are arranged according to the surface S2. It is also conceivable to simultaneously arrange the lenses 12 of the first group 13 in a curved surface S1 and the lenses 12 of the second group 14 in a curved surface S2, in which case the curvature of the surface S2 is similar in conformation, but less accentuated. , that the curvature of the facade 5 while the curvature of the surface S1 is of opposite conformation, but more accentuated, than that of the facade 5. The effect of the curvatures of the surfaces S1 and S2 is added to adapt to the curvature of the facade 5. The curvatures of the surfaces S1 and S2 satisfy a rule which advocates that all the lens couples 12 provide a magnification of 1.

Claims

Revendications claims
1.- Système optique (10) comprenant une pluralité de lentilles (12) réparties en au moins un premier groupe (13) comprenant au moins deux lentilles (12) et un deuxième groupe (14) comprenant au moins deux lentilles (12), au moins une lentille (12) du premier groupe (13) étant disposée à l'aplomb d'une lentille correspondante (12) du deuxième groupe (14), caractérisé en ce que ledit système optique (10) est équipé de moyens de canalisation (20) de rayons lumineux (11 ) entrants à l'intérieur d'une quelconque lentille (12) du premier groupe (13) vers la lentille correspondante (12) du deuxième groupeAn optical system comprising a plurality of lenses distributed in at least a first group comprising at least two lenses and a second group comprising at least two lenses. at least one lens (12) of the first group (13) being disposed in line with a corresponding lens (12) of the second group (14), characterized in that said optical system (10) is equipped with channeling means (20) incoming light rays (11) within any lens (12) of the first group (13) to the corresponding lens (12) of the second group
(14).(14).
2.- Système optique (10) selon la revendication précédente, caractérisé en ce que lesdits moyens de canalisation (20) comprennent une grille principale (24) qui est interposée entre les lentilles (12) du premier groupe (13) et les lentilles (12) du deuxième groupe (14), la grille principale (24) comportant un bord distal (25) en appui contre les lentilles (12) du premier groupe (13) et un bord proximal (26) en appui contre les lentilles (12) du deuxième groupe (14).2. Optical system (10) according to the preceding claim, characterized in that said channeling means (20) comprise a main gate (24) which is interposed between the lenses (12) of the first group (13) and the lenses ( 12) of the second group (14), the main gate (24) having a distal edge (25) bearing against the lenses (12) of the first group (13) and a proximal edge (26) bearing against the lenses (12). ) of the second group (14).
3.- Système optique (10) selon la revendication 2, caractérisé en ce que la grille principale (24) comporte une pluralité de canaux principaux (27) qui s'étendent entre le bord distal (25) et le bord proximal (26) de ladite grille principale (24).Optical system (10) according to claim 2, characterized in that the main gate (24) has a plurality of main channels (27) which extend between the distal edge (25) and the proximal edge (26). of said main gate (24).
4.- Système optique (10) selon la revendication 3, caractérisé en ce que chaque canal principal (27) est ménagé à l'aplomb d'un couple (15) correspondant de lentilles (12) du premier groupe (13) et du deuxième groupe (14) disposées à l'aplomb l'une de l'autre. 4. Optical system (10) according to claim 3, characterized in that each main channel (27) is formed in line with a corresponding pair (15) of lenses (12) of the first group (13) and the second group (14) arranged in alignment with one another.
5.- Système optique (10) selon l'une quelconque des revendications 3 et 4, caractérisé en ce que chaque canal principal (27) s'étend longitudinalement entre un premier orifice (28) qui coiffe une lentille (12) du premier groupe5.- optical system (10) according to any one of claims 3 and 4, characterized in that each main channel (27) extends longitudinally between a first hole (28) which caps a lens (12) of the first group
(13) et un deuxième orifice (29) qui coiffe la lentille correspondante (12) du deuxième groupe (14).(13) and a second orifice (29) which caps the corresponding lens (12) of the second group (14).
6.- Système optique (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que les lentilles (12) du premier groupe (13) sont disposées selon une surface S1 tandis que les lentilles (12) du deuxième groupe (14) sont disposées selon une surface S2.6. Optical system (10) according to any one of the preceding claims, characterized in that the lenses (12) of the first group (13) are arranged on a surface S1 while the lenses (12) of the second group (14) ) are arranged on a surface S2.
7.- Système optique (10) selon la revendication 6, caractérisé en ce que la surface S1 est conformée en un premier plan P1.7.- optical system (10) according to claim 6, characterized in that the surface S1 is shaped in a first plane P1.
8.- Système optique (10) selon la revendication 7, caractérisé en ce que chaque lentille (12) du premier groupe (13) comporte un premier axe optique A1 qui est orienté orthogonalement audit premier plan P1 et en ce que chaque lentille (12) du deuxième groupe (14) comporte un deuxième axe optique A2 qui est également orienté orthogonalement audit premier plan P1.8. Optical system (10) according to claim 7, characterized in that each lens (12) of the first group (13) comprises a first optical axis A1 which is oriented orthogonally to said first plane P1 and in that each lens (12) ) of the second group (14) has a second optical axis A2 which is also oriented orthogonally to said first plane P1.
9.- Système optique (10) selon la revendication 8, caractérisé en ce que les premier A1 et deuxième A2 axes optiques respectifs de lentilles (12) du premier groupe (13) et du deuxième groupe (14) d'un même couple (15) sont confondus.9. Optical system (10) according to claim 8, characterized in that the first A1 and second A2 respective optical axes of lenses (12) of the first group (13) and the second group (14) of the same pair ( 15) are merged.
10.- Système optique (10) selon l'une quelconque des revendications 2 à 9, caractérisé en ce que la grille principale (24) est réalisée à partir d'un matériau optiquement opaque.10. Optical system (10) according to any one of claims 2 to 9, characterized in that the main gate (24) is made from an optically opaque material.
11.- Système optique (10) selon l'une quelconque des revendications 3 à 10, caractérisé en ce que chaque canal principal (27) loge une lentille (12) d'un troisième groupe (30) qui est une lentille (12) convergente et qui est de même pas que les lentilles (12) du premier (13) et deuxième (14) groupe.11. Optical system (10) according to any one of claims 3 to 10, characterized in that each main channel (27) houses a lens (12) of a third group (30) which is a lens (12) convergent and which is likewise not the lenses (12) of the first (13) and second (14) group.
12.- Système optique (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de canalisation (20) comprennent au moins une grille secondaire (31 ,32) munie de canaux secondaires (33).12.- optical system (10) according to any one of the preceding claims, characterized in that the channeling means (20) comprise at least one secondary grid (31, 32) provided with secondary channels (33).
13.- Système optique (10) selon la revendication 12, caractérisé en ce que chaque canal secondaire (33) loge une lentille respective (12) du premier groupe (13).13.- optical system (10) according to claim 12, characterized in that each secondary channel (33) houses a respective lens (12) of the first group (13).
14.- Système optique (10) selon l'une quelconque des revendications 12 et 13, caractérisé en ce que chaque canal secondaire (33) loge une lentille respective (12) du deuxième groupe (14).14.- optical system (10) according to any one of claims 12 and 13, characterized in that each secondary channel (33) houses a respective lens (12) of the second group (14).
15.- Système optique (10) selon l'une quelconque des revendications 7 à 14, caractérisé en ce que les lentilles (12) du deuxième groupe (14) sont disposées selon un deuxième plan P2 qui est ménagé parallèlement au dit premier plan P1.15.- optical system (10) according to any one of claims 7 to 14, characterized in that the lenses (12) of the second group (14) are arranged in a second plane P2 which is formed parallel to said first plane P1 .
16.- Dispositif d'affichage (1 ) d'au moins une information (2), ledit dispositif (1 ) comprenant un moyen d'affichage (4), une façade (5) et un système optique (10) selon l'une quelconque des revendications précédentes, ledit moyen d'affichage (4) générant ladite information (2) sous la forme de rayons lumineux (11 ) et étant disposé en vis-à-vis de la façade (5), ledit système optique (10) étant interposé entre le moyen d'affichage (4) et la façade (5) pour projeter ladite information (2) sur la façade.16.- Display device (1) for at least one information item (2), said device (1) comprising a display means (4), a facade (5) and an optical system (10) according to the any one of the preceding claims, said display means (4) generating said information (2) in the form of light rays (11) and disposed opposite the facade (5), said optical system (10) ) being interposed between the display means (4) and the front (5) for projecting said information (2) on the facade.
17- Dispositif d'affichage selon la revendication 16 comprenant un système optique selon l'une quelconque des revendications 6 à 15, caractérisé en ce que ladite surface S1 présente une conformation similaire à une conformation (C1P") de la façade (5).17- A display device according to claim 16 comprising an optical system according to any one of claims 6 to 15, characterized in that that said surface S1 has a conformation similar to a conformation (C 1 P ") of the facade (5).
18- Dispositif d'affichage selon la revendication 16 comprenant un système optique selon l'une quelconque des revendications 6 à 15, caractérisé en ce que ladite surface S1 présente une conformation symétrique à une conformation (C) de la façade (5) par rapport à un plan de symétrie interposé entre la façade (5) et la surface S1.18- A display device according to claim 16 comprising an optical system according to any one of claims 6 to 15, characterized in that said surface S1 has a symmetrical conformation to a conformation (C) of the facade (5) relative to a plane of symmetry interposed between the facade (5) and the surface S1.
19.- Dispositif d'affichage selon l'une quelconque des revendications 16 à 18, caractérisé en ce que les lentilles (12) du premier groupe (13) sont optiquement différentes les unes des autres pour focaliser une image (6) de ladite information (2) sur la façade (5).19.- Display device according to any one of claims 16 to 18, characterized in that the lenses (12) of the first group (13) are optically different from each other to focus an image (6) of said information (2) on the facade (5).
20.- Dispositif d'affichage selon l'une quelconque des revendications 16 à 19, caractérisé en ce que les lentilles (12) du deuxième groupe (14) sont optiquement différentes les unes des autres pour focaliser une image (6) de ladite information (2) sur la façade (5).20.- Display device according to any one of claims 16 to 19, characterized in that the lenses (12) of the second group (14) are optically different from each other to focus an image (6) of said information (2) on the facade (5).
21.- Dispositif d'affichage selon l'une quelconque des revendications 16 à 20 comprenant un système optique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le premier plan P1 est ménagé parallèlement à un plan d'extension générale P du moyen d'affichage (4). 21. Display device according to any one of claims 16 to 20 comprising an optical system according to any one of claims 1 to 7, characterized in that the first plane P1 is formed parallel to a general plane of extension P of the display means (4).
EP08862793A 2007-12-18 2008-12-16 Optical system comprising a device for displaying information relative to the implementation of an automobile accessory Ceased EP2232305A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0708807A FR2925178A1 (en) 2007-12-18 2007-12-18 OPTICAL SYSTEM PARTICIPATING IN A DEVICE FOR DISPLAYING INFORMATION RELATING TO THE IMPLEMENTATION OF AN ACCESSORY OF A MOTOR VEHICLE
PCT/EP2008/067675 WO2009077543A1 (en) 2007-12-18 2008-12-16 Optical system comprising a device for displaying information relative to the implementation of an automobile accessory

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EP2232305A1 true EP2232305A1 (en) 2010-09-29

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EP (1) EP2232305A1 (en)
JP (1) JP2011507048A (en)
KR (1) KR20100094518A (en)
CN (1) CN101971058A (en)
BR (1) BRPI0820728A2 (en)
FR (1) FR2925178A1 (en)
WO (1) WO2009077543A1 (en)

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FR2925178A1 (en) 2009-06-19
JP2011507048A (en) 2011-03-03
CN101971058A (en) 2011-02-09
KR20100094518A (en) 2010-08-26
WO2009077543A1 (en) 2009-06-25
US20110090577A1 (en) 2011-04-21
BRPI0820728A2 (en) 2015-06-16

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