• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    System comprising a dispersion and / or conversion facility (50) and a scanning facility (52) controlled to project the light (58) with an output wavelength (λ0) on the plant (50). The light incidence zone is movable on the installation (50). The projection system has a hologram (64) receiving the undispersed light (66), transmitted through the installation (50) and having an output wavelength (λ0) and which can deflect the light (66). dispersed.
    公开号:FR3043754A1
    申请号:FR1660893
    申请日:2016-11-10
    公开日:2017-05-19
    发明作者:Annette Frederiksen；Stefanie Mayer
    申请人:Robert Bosch GmbH；
    IPC主号:
    专利说明:

    Field of the invention
    The subject of the present invention is a projection system for a headlamp and / or a vehicle lighting light comprising a light scattering and / or conversion installation and a scanning installation controlled by a control specific to the projection system. or an external control so as to project the light generated by the projection system or arriving in the projection system with at least one projected output wavelength on the light scattering and / or conversion installation, the area of light incidence for the projected light movable on the light scattering and / or conversion facility by the controlled scanning facility, and the light scattering and / or conversion facility being designed for convert and / or to disperse in space the light projected on the light scattering and / or conversion facility so that the light re emitted in the external environment of the projection system comprises emitted light and / or light dispersed in space with at least one output wavelength. The invention also relates to a projector or a vehicle lighting lamp thus equipped.
    State of the art
    Figure 1 shows a projection system corresponding to the state of the art. This known projection system is, for example, applied to a vehicle headlamp as described in DE 10 2013 021 688 A1.
    The projection system shown diagrammatically in FIG. 1, according to the state of the art, has a light source 10 for emitting a light 12 having an output wavelength Λ0. The light 12 emitted by the light source 10 is projected by a scanning installation 14, such as, for example, a mirror 14 movable around at least one axis of rotation on a light dispersion and / or conversion installation 16. The incident area of the light 12 projected on the light scattering and / or conversion plant 16 can be moved by the scanning facility 14 so that the light scattering and / or conversion plant 16 is ba layed at least partially by the light incident zone. At least one fluorescent material is deposited on the light scattering and / or conversion plant 16; this fluorescent material absorbs the light 12 emitted by the light source 10 and disperses it in space. The light scattering and / or conversion installation 16 thus emits in addition to the light 18 dispersed in space by the fluorescent material and having at least one output wavelength λ, also the light emitted by the fluorescent material whose emission wavelength λ1 is different from the output wavelength λ 0. The light rays 18 and 20 emitted by the light scattering and / or conversion installation 16 having the wavelength AO and λΐ, are emitted by at least one optical unit 22 to the external environment of the known projection system.
    Description and advantages of the invention
    The subject of the present invention is a projection system of the type defined above, characterized by a hologram on which at least one light dispersed in space arrives, transmitted at least once through the light scattering installation and / or conversion and having at least one output wavelength and which can deflect the undispersed light into space. The invention also relates to a projector equipped with such a projection system and a vehicle lighting light also equipped with such a projection system.
    In other words, the present invention develops a projection system having a reliable ability to filter out parasitic radiation from defects / holes in the light scattering and / or conversion facility. This makes it possible to guarantee in a targeted way that, despite the defects or the aging effects of the light scattering and / or conversion installation, the projection system continues to fulfill the desired function and retains the advantage of the light signal emitted by the projection system without creating a risk to the safety of the view of the observer that could be reached by the parasitic radiation.
    According to one development, the projection system can automatically detect faults / holes in the light disruption and / or conversion installation using the detector signal provided by the light detection facility. In particular, the projection system according to the invention makes it possible to automatically and reliably recognize the position of the light incident zone producing this defect / hole. Then, we can manage the projection system to neutralize the emission of parasitic radiation.
    The projection system according to the invention offers the advantages mentioned above thanks to its realization with a hologram and possibly a light detection installation. Such components are relatively compact and as will be described in more detail below, they can be installed with relatively high freedom of geometry in the projection system. Thus, the projection system according to the invention, despite its equipment with a hologram and possibly a light detection system, is realized in a relatively simple manner and has a small footprint.
    Advantageously, the projection system has a light detection facility having at least one detection surface to which the light scattering and / or conversion facility, through the hologram; deviates the non-scattered light into the space and which has at least a first wavelength, the installation emits a detector signal concerning the intensity detected by the light detection installation for the light arriving on the surface of detection or a signal derived therefrom to be supplied to the command. This results in the advantages mentioned above.
    According to an advantageous development, the control specific to the projection system or external thereto takes into account the sensor signal or the signal derived therefrom to determine at least the position of the light output zone on the dispersion installation of light and / or conversion, from the range of possible positions of the light incident area on the light scattering and / or conversion installation, constituting a problematic position; Next, the projection system is managed so that the intensity of the light projected onto the light scattering and / or conversion installation is reduced to at least the fixed problem position and / or to travel more rapidly through this problematic position. fixed, in comparison with the remaining path of the range of possible positions of the light incident area of the light scattering and / or conversion facility. The reliability of detection by a location detector and / or holes in the light scattering and / or conversion installation can thus be used to then selectively cover or selectively jump the respective position of the light incidence zone. . This makes it possible to neutralize the illumination of the location / hole, which is recognized as defective, and thus no light dispersed in space and having the output wavelength, will pass through the defective location or orifice, so that not be projected as a light signal into the eye of an observer of the projection system. Thus, there is no danger of endangering the observer's view.
    Preferably, the projection system has an operating installation for recognizing by means of the detector signal whether the detected intensity exceeds a predefined range of normal values and, if appropriate, providing a deduced signal corresponding to the own control. to the projection system or external control. In this case, the control specific to the projection system or external to it, taking into account the signal deduced, recognizes, if for at least one position of the light incident zone on the light scattering installation and / or conversion, from the range of possible positions, it has been found that the range of the predefined normal values is exceeded by the intensity detected at least once and if necessary, fix at least the respective position as a problem position and then managing the projection system so that the intensity of the light projected onto the light scattering and / or conversion installation is at least reduced for the fixed problem position and / or at least the problematic fixed position is traveled more rapidly than the remaining possible positions of the light incident area on the dispersion and / or conversion facility. The operating installation used according to this example and the command which cooperates, can be realized in the form of electronic circuits, economic and can bulky. The projection system thus equipped provides a very high level of security and allows the emission of an attractive optical signal without the need for electronic circuits or without complicating them. For example, the hologram of the projection system is a transmission hologram. Similarly, the projection system may include as a hologram, a hologram by reflection. For the design of the projection system according to the invention, the very high freedom of geometry results from the possibility of using a choice of a reflection hologram or a transmission hologram.
    In addition, the transmission hologram or reflection hologram may be directly on the lens which projects the light emitted by the projection system into the external environment of the projection system. The functional multiplicity of the projection lens thus developed makes it possible to further reduce the projection system.
    According to another advantageous development, the projection system has a Edge Lit hologram. The use of such an Edge Edge hologram makes it possible to minimize the projection system. All the above mentioned advantages also apply to a headlamp or a vehicle lighting light equipped with such a projection system. drawings
    The present invention will be described hereinafter in more detail with the aid of examples of a projection system shown in the accompanying drawings in which: FIG. 1 shows the diagram of a protection system according to the state of the 2 schematically shows a first embodiment of the projection system, FIG. 3 is a schematic representation of a second embodiment of the projection system, FIG. 4 is a diagrammatic representation of a third embodiment. 5 is a diagrammatic representation of a fourth embodiment of the projection system, FIGS. 6A, 6B show coordinate systems for describing the angular and wavelength selectivity of holograms of the projection system. volume usable by the projection system. Description of embodiments
    FIG. 2 schematically shows a first embodiment of the projection system of the invention comprising a light scattering and / or conversion installation 50 and a scanning installation 52 cooperating therewith. The scanning installation 52 is controlled by a control signal 54 supplied by a control 56 specific to the projection system or external to it, so that a beam of light 58 generated in the projection system or arriving in that it is projected on the light scattering and / or conversion installation 50 with at least one output wavelength AO (and an output intensity). The projected light 58 arrives on a partial surface / partial volume of the light scattering and / or conversion plant 50; this surface or this volume will be called in the following "area of incidence of light". The projected light incident area 58 on the light scattering and / or conversion facility 50 by the scanning facility 52, controlled (by at least one control signal 54), can move. In other words, the scanning installation 52 makes it possible to scan the light scattering and / or conversion installation 50 by the light incidence zone, at least in one dimension and preferably in two dimensions. The scanning device 52 is, for example, composed of at least one mirror / micro-mirror 52 movable about an axis of rotation in the projection system. This mirror / micro-mirror 52 is actuated by an electrostatic, magnetic and / or piezoelectric actuator of the scanning installation 52 (in particular in quasi-static mode and / or in harmonic mode) around at least one axis of rotation. The realization of the scanning installation 52 shown in Figure 2 in the form of a mirror / micro-mirror 52, however, is only one example. The light scattering and / or conversion installation 50 is designed to convert and / or disperse in space, the light 58 projected on the light scattering and / or conversion installation 50. The light / signal light radiated by the light scattering and / or conversion installation 50 in the environment of the projection system thus comprises (at least) an emitted light 60 (with at least one emission wavelength λ 1 which differs from the output wavelength Λ0) and a spatially dispersed light 62 having at least one output wavelength λ 0. This ensures that the light / light signal radiated in the external environment of the projection system is pleasantly perceived by an observer.
    In the example of FIG. 2, the light scattering and / or conversion installation 50 comprises at least one fluorescent material / colored material. The fluorescent material may be deposited on a projection surface used as the light scattering and / or conversion installation 50 or be a body integrated in the light scattering and / or conversion installation 50. The light / signal light beam radiated by the light scattering and / or conversion installation 50 and arriving in the external environment of the projection system thus comprises (at least) the light 60 emitted by at least one fluorescent material having the wavelength d emission A 1 of the fluorescent material (which differs from the output wavelength λ 0 and / or the light 62 dispersed in space by the fluorescent material and having at least the output wavelength Λ 0. the light scattering and / or conversion installation 50 may be designed to "mix" in particular to make a "white mixture" of several output wavelengths Λ0 without using of fluorescent material / coloring matter.
    The light 58 projected on the installation 50 may be a monochromatic or polychromatic light 58. It is often advantageous to use a light 58 having at least one wavelength A 0 in the spectral range of the blue. A large number of fluorescent materials used for the light scattering and / or conversion installation 50 are suitable in this case for absorbing at least the wavelength λ 0. Fluorescent materials excited by absorption of output wavelength λ 0 emit light 60 having at least one emission wavelength λΐ in the yellow spectral range so that the combination of light 60 emitted by the fluorescent material having at least one emission wavelength λΐ and the spatially dispersed light 62 having at least one output wavelength λ 0 gives white light pleasantly perceived by an observer. The use of the projection system is however not limited to a determined spectrum of at least one output wavelength λ 0 and at least one emission wavelength λ ΐ.
    The fluorescent material / coloring material deposited on the installation 50 is, for example phosphorus. Phosphorus absorbs exit wavelengths at around 450 nm to emit A1 wavelengths around 570 nm. Phosphorus is suitable for this advantageously to generate white light. In addition, phosphorus is suitable for dispersion / scattering of light in space. In addition, phosphorus is an economical relative fluorescent material. As will be detailed below, the projection system thus described can continue to operate even after local whitening of the fluorescent material / dyestuff while maintaining a good quality of the light signal and a high degree of security. Therefore, the light 58 projected on the light scattering and / or conversion installation 50 may have a relatively high output intensity / intensity (for example a power greater than 50 W) even if phosphorus as a fluorescent material (as at least one fluorescent material). Instead, and in addition to phosphorus, a large number of other fluorescent materials / dyestuffs can be used for the projection system.
    However, during the deposition / integration of the fluorescent material on / in the light scattering and / or conversion installation 50, it may happen that the fluorescent material is not deposited / integrated or is insufficiently in a partial area called the "defect zone" of the light scattering and / or conversion installation 50. In addition, it may happen that the fluorescent material exhausted in / on at least one other defect area appears due to effects of aging and / or too high powers of the light 58 projected on the light scattering and / or conversion installation 50. This defective area is frequently called a "hole" in / on the light scattering installation and / or conversion 50.
    For all the defects described above, the risk is that light 58 projected on such a defective area is transmitted by the fluorescent material with little or no interaction (modification) and is emitted as a coherent light oriented in the environment 66 projection system. The oriented coherent light 66 that arrives at a defective area of the installation 50 is generally referred to as "spurious radiation". The occurrence of parasitic radiation in the light / light signal radiated to the external environment of the projection system often deteriorates the advantage of light for the observer. In addition, the observer receiving the parasitic radiation in his eye can perceive it in an unpleasant way. In particular, insofar as the light 58 projected by the installation 50 has an intensity (output intensity) sufficient to excite the photochemical processes in the tissue of the human eye, the parasitic radiation may constitute a risk for the eye of the observer. As will be detailed next, the projection system of FIG. 2 ensures that such defects are detected immediately (almost immediately) and that they are neutralized as a result of the operation of the projection system.
    The projection system of FIG. 2 comprises for this purpose a hologram 64 installed in such a way that the light 66 dispersed in space (and which is transmitted at least once through the installation 50) and having at least a length of As for example for the parasitic radiation generated by the defects described above, the output wave A0 arrives on the hologram 64. The hologram 64 deflects the undispattered light 66. On the other hand, the light 60 emitted by a fluorescent material (having an emission wavelength λ 1 of the fluorescent material, which differs from the output wavelength A0) and / or the light 62 dispersed by the material fluorescent (having at least one output wavelength λ 0) may pass the hologram 64 without being substantially deviated. The hologram 64 makes it possible to filter the undispersed light 66 corresponding to the output wavelength λ 0.
    A hologram 64 (holographic optical element HOE) is an optical element for deflecting at least one output wavelength λ 0 (spectrally specific). A type of hologram can be used in the projection system which deflects light in the blue spectrum range. The hologram 64 allows at least one emission wavelength λΐ, which is for example in the spectral range of the yellow, to pass through the hologram 64 (without being deflected / blocked). In addition to such wavelength selectivity, hologram 64 may also have good angular selectivity so that light 62 dispersed by a fluorescent material having an output wavelength Λ0, crosses the hologram 64 (without being deflected / unblocked) while the non-dispersed light 66 having an output wavelength Λ0 will be deflected. To ensure such a function by the hologram 64, it is possible, for example, to produce, by means of the hologram 64, the deflection function of the spherical wave constituting the center of the spherical wave in view of the installation of for example, this is the case of a mirror / micromirror 52. The center of another spherical wave will be located on a detection surface of the photodetector installation 68 which will be described. Advantageously, the hologram 64 is a volume hologram (for example a photo-polymer) because this type of hologram is distinguished by excellent selectivity (angular selectivity and wavelength selectivity).
    Preferably, the projection system further comprises a photodetector installation 68 having a detection surface in which the undisperse light 66 (transmitted at least once through the hologram 64) can be deflected by means of the hologram 64. the installation 50) and having an output wavelength λ 0. As photodetector installation 68, for example at least one photodiode is used. The embodiment of the projection system is however not limited to a certain type of photodetector installation 68. The photodetector installation 68 provides a sensor signal 70 relating to the detected intensity of the light 66 arriving on a surface of detection. The detector signal 70 or a signal 72 derived therefrom (taking into account the detector signal 70) is preferably supplied to the control 56.
    The advantages of the projection system are not limited to the filtering of the undispersed light 66 of the output wavelength λ 0 to avoid spurious radiation in the spatial environment of the projection system. In addition to the filtering of the undispersed light 66, the cooperation between the hologram 64 and the photodetector installation 68 advantageously makes it possible to recognize the overlap of the light output area and a defective area with the aid of the detected intensity. During the scanning of the installation 50 (in one dimension or in two dimensions) using the light incidence zone, it will be possible to detect if, at what frequency and for which incidence zones (within a range of possible positions of the light incidence zone) the undispersed light 66 is emitted by the installation 50.
    Then, the information obtained can be used in a targeted manner to avoid projection of a strong light intensity on the defective area thus detected. After recognizing the existence and the frequency of defective zones in the installation 50 this allows for the operation of the projection system which, in spite of the defective zone or zones, will make it possible to transmit towards the external environment of the projection system, a light / light signal interesting for the observer without risking to endanger his eyes. To avoid the emission of parasitic radiation by the projection system it is not necessary to stop the projection system immediately. Instead, thanks to the design advantageously described above, the projection system and while ensuring the desired security for the eyes of the observer, we can keep a light / light signal of interest to the observer.
    Preferably, the control 56 taking into account the detector signal 70 or the signal 72 which is deduced, manages the projection system so that only the lowest possible light intensity of the light 58 arrives on an area detected as faulty. For example, the control 56 manages the projection system so that the intensity / intensity of light output 58 projected onto the installation 50 when the light incidence zone intersects an area recognized as defective, is reduced and / or that the defective zone, recognized is traveled more quickly / is "skipped" when scanning the installation 50 with the light incident area (compared to the rest of the installation 50).
    For example, taking into account the detector signal 70 or the signal 72 derived therefrom, the control 56 considers as a problem position, the position of the light incidence zone of the installation 50 (among the set of possible positions of the light incident area on the installation 50). Preferably, the control 56 always fixes the position (current position) of the light incidence zone whose detected intensity has been increased as a problem position. Then, the control 56 activates the projection system so that the output intensity / intensity of the light 58 projected on the installation 50 is reduced for the problem position thus fixed in particular so that it is reduced to zero and / or that at least this problem position thus fixed (by comparison with the rest of the set of possible positions of the light incident area on the installation 50) is traveled more quickly / is "skipped". By way of example, the projection system of FIG. 2 has an operating installation 74 which detects with the help of the sensor signal 70 if the detected intensity exceeds a predefined range of normal values and, if appropriate, sends a signal 72 corresponding to the command 56. In this case, the control 56 is preferably designed so that, taking into account the signal 72 it detects a position of the light incident area on the installation 50 (among the all possible positions) for which it has been found at least once that the intensity detected (by the operating installation 74) has exceeded the predefined range of the normal values; this position will be set as the problem position. The operating installation 74 may be an electronic circuit separate from the control 56 or a subset of the control 56.
    According to an embodiment of FIG. 2, the projection system has its own light source 76. As an example of embodiment, the light source 76 is a laser 76. According to a possible development of the projection system it is also possible to having a plurality of light sources 76 that emit at different AO output wavelengths. It should be noted here that the realization of the projection system is not limited to a certain type of system with a light source 76, nor its equipment with its own light source 76. For example, the projection system can also cooperate with at least one external transmitter photo device.
    Preferably, the control 56 activates at least the light source 76 specific to the projection system and at least one external light emitting device by a control signal 77 so as to reduce the intensity / intensity of the output of the light 58 nearby in or on a problem position, detected / fixed. Similarly, one can also have at least one light blocking device between the light source 76 or the external light emitting device and the scanning device 52 to control this device with the command 56 so that close to the problem position detected / fixed, one can cut / block the light 58. Alternatively or additionally, one can also control the scanning installation 52 with the control signal 54 provided by the command 56 to browse / "jump" the detected / fixed problem position or at least one position in proximity (compared with the remaining possible positions of the light incident area on the installation 50).
    According to the embodiment of FIG. 2, the projection system comprises a projection lens 78 for projecting the light 60 and 62 emitted by the projection system into the external environment of the projection system. In addition to the optical components shown, the projection system of FIG. 2 may also include other components.
    By way of example only, the hologram 64 is a transmission hologram 64 installed / realized separately from the projection lens 78. As an alternative to the embodiment of FIG. 2, the transmission hologram 64 can be directly connected to the projection lens 78.
    Figure 3 shows a second embodiment of the projection system.
    The projection system shown schematically in FIG. 3 comprises a hologram 80 (physically separated from the projection lens 78) in the form of a reflection hologram 80. The photodetector installation 68 which cooperates with the hologram is installed from in such a way that the non-dispersed light 66 is reflected by the hologram 80 on at least one detection surface. The other components / other characteristics of the projection system of FIG. 3 correspond to the description already made above.
    Figure 4 schematically shows a third embodiment of the projection system.
    In contrast to the embodiment described above, the reflection hologram 82 of the projection system of FIG. 4 is integrated directly with the projection lens 78. This direct combination of the reflection hologram or the transmission of the projection 78 reduces clutter. This also makes it possible to replace the hologram by reflection or by transmission by a holographic lens. This can be achieved in the form of the stacking of two holograms by reflection or transmission, which has other advantages of space and freedom of design.
    Figure 5 shows schematically a fourth embodiment of the projection system. The hologram 84 of the projection system schematically shown in FIG. 5 is an Edge-Lit hologram 84. The Edge-Lit hologram 84 may be in contact with the light scattering and / or conversion 50 facility. , light 66 deflected to at least one detection surface in the Edge Lit hologram 84 may be directed to the photodetection facility 68 provided at the edge of the Edge Lit hologram 84. The photodetection facility 68 may comprise by a one-pixel detector or a network with lines. The projection system equipment with an Edge 84 hologram makes it considerably easier to achieve.
    All projection systems described above can be used in a laser projector / projector. Likewise, all the projection systems described above can be used in a vehicle fire projector (laser projector). Such a projector also called adaptive projector provides the function of the various traffic lights of the vehicle such as low beam, long range light, fog light, dynamic curve fire, highway fire, urban fire and / or the fire of bad weather, according to the choice made, for example, by the driver. The selection of the light distribution at the projector can also be provided automatically by the vehicle depending on the situation. This is why the projector can be considered as an active projector. It should also be noted that such a headlamp is not limited to a predefined distribution of light, but allows any distribution of light in the vehicle environment. Such a projector thus makes it possible, for example, not to illuminate vehicles traveling upstream in the own cone of long-range lights, which can also be called long-range non-glare lights. This avoids the risks associated with direct lighting.
    All the embodiments described above make it possible to use the hologram 64, 80-84 effectively by the parameters of the material or to have an appropriate illumination with the hologram. The efficiency will be minimized so that for an intact fluorescent material deposited on the plant 50, the fraction of the light 66 diverted to at least one sensing surface is small for the photodetector 68 to fail to detect. intensity or practically no intensity while in case of a fault, the intensity detected will be significantly higher.
    It is also possible to choose a greater efficiency in certain regions of the hologram 64, 80-84 (for example a pixel at the edge) so that the photodetector installation 68 measures the intensity already for a projection system without default. This makes it possible, as an additional function, to calibrate or adjust the projection system by the light 66 diverted towards a detection surface. In addition, it is possible to write by pixel the volume hologram. In such a manufacturing method, each pixel of the hologram 64, 80-84 will have its own optical function. The angles will be precisely adapted for each pixel. One could also consider a combination of a network of lines or a matrix for the photodetector installation 68 (in place of a detector with a pixel). Such a design of the hologram 64, 80-84 makes it possible to detect where a defective zone is located and then to attenuate and / or neutralize the illumination of this defective zone thus detected according to the possibilities described above.
    Figures 6A and 6B show coordinate systems for describing the angular and wavelength selectivity of the volume holograms used in the projection system. On the abscissa of the coordinate system of FIGS. 6A and 6B there is an angle of incidence Φ of the output wavelength light λΟ (in degrees) or the difference between the nanometer wavelength of the light and the output wavelength AO with an angle of incidence Φ = 0. The ordinate axis of the coordinate system of FIGS. 6A and 6B represents the diffraction efficiency e.
    As shown in FIGS. 6A and 6B, the light is only diffracted in an angular range or wavelength defined in the volume hologram to achieve the desired function. For light outside the defined area, the holographic layer is transparent. The width of these areas corresponds to the thickness and modulation of the refractive index specific to the holographic material.
    Despite the possibility of reliable detection of defects, because of the sensitivity to wavelengths or the angular sensitivity of volume holograms, such holograms attenuate only slightly negligibly the light / light signal emitted by the projection system.
    NOMENCLATURE OF MAIN ELEMENTS 10 Light Source 12 Light 14 Scanning Plant 16 Light Dispersing and / or Conversion Facility 18 Scattered Light 20 Light Emitted by Fluorescent Material 22 Optical 50 Light Dispersing and / or Conversion Installation 52 Installation of scanning, mirror, micro-mirror 54 Control 56 Command 58 Beam of light, monochromatic or polychromatic light 60 Emission wavelength light Al 62 Light dispersed by fluorescent material 64 Hologram 66 Light scattered 68 Photo installation -detector 70 Photo-detector signal 72 Signal derived from the photodetector signal 74 Operating system 76 Light source 78 Projection lens 80 Hologram 82 Hologram 84 Hologram
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    1 °) Projection system for a projector and / or a vehicle lighting light having a light scattering and / or conversion facility (50) and a scanning installation (52) controlled by a control (56). ) specific to the projection system or an external control so as to project the light (58) generated by the projection system or arriving in the projection system with at least one output wavelength (Λ0) on the installation of light scattering and / or conversion (50), * the light incidence area for projected light (58) that can be moved to the light scattering and / or conversion facility (50) by the installation scanning (52), and the light scattering and / or conversion facility (50) being adapted to convert and / or to spatially disperse the light (58) projected on the dispersion dispersing device. light and / or convection the light (60, 62) emitted into the external environment of the projection system comprises the emitted light (60) and / or the light scattered in the space (62) with at least one length of light. output wave (Λ0), a projection system characterized by a hologram (64, 80-84) on which at least one non-spatially dispersed light (66) is transmitted at least once through the lightning installation. light scattering and / or conversion (50) and having at least one output wavelength (X0) and which can deflect the undispersed light (66) into space.
    [0002]
    2) projection system according to claim 1, characterized in that it comprises a photodetector installation (68) having at least one detection surface to which the hologram (64, 80-84) deflects the light not dispersed in the space (66), transmitted by the light scattering and / or conversion facility (50), and having at least one output wavelength (Λ0), and a sensor signal (70) relating to a Intensity detected by photodetector setup (68) of light (66) arriving at at least one detection surface or signal (72) derived, supplied to control (56).
    [0003]
    3) projection system according to claim 2, characterized in that the control (56) specific to the projection system or external thereto, taking into account the sensor signal (70) or the signal (72) which in is deduced, sets at least one position of the light incident area on the light scattering and / or conversion facility (50) from a range of possible locations of the incident light incident area. the light scattering and / or conversion installation (50) as a problematic position and then activating the projection system so that the light intensity (58) projected onto the light scattering and / or conversion installation ( 50) is reduced at least in the problematic, fixed position and / or at least one fixed problem position is traveled more rapidly over the light scattering and / or conversion facility (50) than the rest of the range. possible positions of the light incident area on the light scattering and / or conversion facility (50).
    [0004]
    4) projection system according to claim 2 or 3, characterized in that it comprises an operating unit (74) for recognizing, with the help of the detector signal (70) when the detected intensity exceeds a range predefined normal values and if necessary provide a corresponding signal (72) to the command (56) specific to the projection system or external to it.
    [0005]
    5 °) projection system according to claim 4, characterized in that the control (56) specific to the projection system or external thereto is designed to, taking into account the deduced signal (72), recognize if at least one position of the light incident zone on the light scattering and / or conversion installation (50) among the possible positions, has found at least once the exceeding of the range of the predefined normal values by the detected intensity , and if necessary fix at least the respective position as problematic position and then manage the protection system so that the intensity of the light (58) projected on the light scattering and / or conversion installation (50) is reduced to at least the problematic, fixed position and / or that at least the fixed problem position, by comparison with the rest of the range of possible positions of the light incidence zone is street faster on the light scattering and / or conversion facility (50).
    [0006]
    6 °) projection system according to one of claims 1 to 5, characterized in that the hologram (64) is a transmission hologram (64).
    [0007]
    Projection system according to one of claims 1 to 5, characterized in that the hologram (80, 82) is a reflection hologram (80, 82).
    [0008]
    Projection system according to one of claims 6 or 7, characterized in that the transmission hologram or the reflection hologram (82) is directly on a projection lens (78) which projects the light (60). , 62) emitted by the projection system, in the external environment of the projection system.
    [0009]
    Projection system according to one of claims 1 to 5, characterized in that the hologram (4) is an Edge-Lit hologram (84).
    [0010]
    10 °) projector comprising a projection system according to one of claims 1 to 9.
    [0011]
    Vehicle lights having a projection system according to any of claims 1 to 9.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3043754A1|2017-05-19|PROJECTION SYSTEM FOR A PROJECTOR AND / OR A VEHICLE FIRE
    FR3007820A1|2015-01-02|SECURE OPTICAL MODULE FOR MOTOR VEHICLE COMPRISING A LASER SOURCE
    FR3027654A1|2016-04-29|LIGHTING AND / OR SIGNALING SYSTEM COMPRISING TELEMETRY MEANS
    EP2837876A1|2015-02-18|Lighting and/or signalling system with improved shaping of scattered radiation
    EP3342638B1|2019-07-31|Lighting device for a vehicle, combining two light sources
    EP3242079B1|2020-09-02|Light module comprising a laser element
    EP2273303B1|2013-08-21|Head-up display providing protection against solar radiation
    EP2829790A2|2015-01-28|Lighting system associating white light and light of a different colour
    EP3376613A1|2018-09-19|Lighting device having mobile scanning means and optical fibre
    EP0104114B1|1987-05-20|Viewer with holographic mirror and method of manufacturing said mirror
    FR3065818A1|2018-11-02|LUMINOUS MODULE FOR A CONFIGURED MOTOR VEHICLE FOR PROJECTING A LIGHT BEAM FORMING A PIXELIZED IMAGE
    EP2873992B1|2016-07-06|System for displaying an image on a windscreen
    CN110850388A|2020-02-28|Lidar device with at least one scattering disk element
    FR3049333A1|2017-09-29|LIGHT CONVERSION MODULE, IN PARTICULAR FOR A MOTOR VEHICLE
    FR3069332B1|2019-08-30|DIFFRACTIVE ILLUMINATION DEVICE WITH INCREASED DIFFRACTION ANGLE
    FR3052266A1|2017-12-08|DEVICE AND METHOD FOR PROJECTING A LIGHT PATTERN
    WO2020084264A1|2020-04-30|Optical component with filter
    FR3102569A1|2021-04-30|Head-up display
    EP3173685A1|2017-05-31|Device for managing the colour of a light for a motor vehicle
    FR3062195A1|2018-07-27|LASER SOURCE LIGHTING DEVICE FOR A VEHICLE
    FR3051923A1|2017-12-01|DEVICE AND METHOD FOR PROJECTING A LIGHT PATTERN
    EP3241709A1|2017-11-08|Luminous module comprising a laser element
    CA2274148C|2005-12-20|Device for protecting an optical system against excess luminosity
    FR3085738A1|2020-03-13|LIGHT MODULE
    WO2021074257A1|2021-04-22|Optical system
    同族专利:
    公开号 | 公开日
    DE102015222296A1|2017-05-18|
    US20170139096A1|2017-05-18|
    US10042101B2|2018-08-07|
    FR3043754B1|2019-05-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3006072C2|1980-02-19|1984-11-29|Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch|Defect detection device for material webs|
    US4842396A|1984-06-29|1989-06-27|Canon Kabushiki Kaisha|Light modulation element and light modulation apparatus|
    AU6400300A|1999-08-04|2001-03-05|Digilens Inc.|Apparatus for producing a three-dimensional image|
    JP5545076B2|2009-07-22|2014-07-09|ソニー株式会社|Image display device and optical device|
    FR3002023B1|2013-02-14|2015-03-20|Valeo Vision|SECURE ADAPTIVE LIGHTING SYSTEM|
    AT514438B1|2013-07-04|2015-01-15|Zizala Lichtsysteme Gmbh|vehicle headlights|
    DE102013021688A1|2013-12-19|2015-06-25|Audi Ag|Projection system for a motor vehicle headlight|
    DE102014205606A1|2014-03-26|2015-10-01|Osram Gmbh|Lighting device with light mixing element and phosphor volume|
    JP6354116B2|2014-07-18|2018-07-11|スタンレー電気株式会社|Vehicle lighting|JP6504886B2|2015-04-03|2019-04-24|株式会社小糸製作所|Vehicle lamp|
    DE102016207759A1|2016-05-04|2017-11-09|Osram Gmbh|Detecting damage to a converter device|
    JP2021034332A|2019-08-29|2021-03-01|パナソニックＩｐマネジメント株式会社|Illumination system and control method for illumination system|
    JP2021034336A|2019-08-29|2021-03-01|パナソニックＩｐマネジメント株式会社|Illumination system and control method for illumination system|
    RU202946U1|2020-12-01|2021-03-16|Общество с ограниченной ответственностью "Трансмаш Плюс"|White light source|
    法律状态:
    2017-11-24| PLFP| Fee payment|Year of fee payment: 2 |
    2018-08-24| PLSC| Publication of the preliminary search report|Effective date: 20180824 |
    2019-11-21| PLFP| Fee payment|Year of fee payment: 4 |
    2020-11-19| PLFP| Fee payment|Year of fee payment: 5 |
    2021-11-19| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015222296.9|2015-11-12|
    DE102015222296.9A|DE102015222296A1|2015-11-12|2015-11-12|Projection system for a projector and / or a vehicle light|
    [返回顶部]