• 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:
    The invention relates to a light module (10) comprising: - a semiconductor laser element (12) emitting a laser beam (14) in a first cone (16) of light; a photoluminescent element (18); an optical means (22) for transforming the light coming from the photoluminescent element (18) into an outgoing light beam (24), the optical means (22) comprising a guide portion (26B) arranged to guide at least a portion light emitted into said first cone (16) of light in a second cone (28) of light; a device (30) for detecting an incident light; characterized in that the light module (10) comprises a deflection means (32) arranged to deflect the light from the second cone (28) of light towards a third light cone (34) directed towards the arranged detection device (30) outside the second cone (28) of light.
    公开号:FR3051535A1
    申请号:FR1654056
    申请日:2016-05-04
    公开日:2017-11-24
    发明作者:Pierre Renaud
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    "Light module with a laser element"
    TECHNICAL FIELD OF THE INVENTION The invention relates to a light module for emitting a light beam comprising a semiconductor laser element. The invention more particularly relates to a light module, in particular for a motor vehicle, intended to emit an outgoing light beam and comprising: - at least one semiconductor laser element configured to emit a laser beam into a first cone of light; a photoluminescent element configured to convert at least a portion of said laser beam; an optical means for transforming the light coming from the photoluminescent element into said outgoing light beam oriented in a transmission direction, the optical means comprising a guide portion arranged to guide at least a portion of the light emitted in said first cone of light in a second cone of light; at least one device for detecting an incident light exceeding a predetermined threshold of luminous intensity.
    BACKGROUND ART OF THE INVENTION
    The semiconductor laser elements have very advantageous properties, for example a very small light emitting surface, a very intense and very collimated laser beam. Optical systems for laser light can therefore be designed with much shorter focal lengths than systems using less collimated light sources, such as incandescent lamps and light emitting diodes (LEDs). Optical systems for laser light thus have a particularly small footprint.
    The laser sources used in the automobile generally comprise a semiconductor laser element able to emit a generally monochromatic laser beam of given wavelength and a photoluminescent element capable of converting a part of the monochromatic laser beam into a beam of light having a wavelength spectrum wider than that of the laser beam.
    However, the use of a semiconductor laser element for such a light source for motor vehicle light modules poses certain problems due in particular to the fact that such a light source emits a substantially monochromatic coherent light beam when the light source photoluminescent element is deteriorated or when moved out of the path of the laser source. Thus, the type of laser used for lighting or signaling applications on a motor vehicle emits a laser beam that is likely to pose certain safety problems in the event of failure of the photoluminescent element. Such a laser beam is particularly harmful to the eyes of an observer, or at least dazzles a user of the road.
    In addition, the lighting or signaling functions of motor vehicles require light beams having a light having a spectrum greater than that of a laser beam, for example a white light.
    To solve security problems while transforming the laser beam into a light radiation suitable for lighting or signaling functions, it is known to interpose a photoluminescent element in the path of the laser beam. Such a photoluminescent element comprises a photoluminescent substance which is excited by light whose wavelength range comprises that of the laser beam, for example blue. As a result, the photoluminescent element emits light whose wavelength spectrum extends in a range of wavelengths excluding that of the laser beam or off-center with respect to that of the laser beam, for example yellow. Thus, at least a portion of the incident light of a given wavelength is converted into light of other wavelengths that is emitted in all directions.
    In addition, at least one other portion of the incident light is dispersed by the photoluminescent element. In this way, the scattered light and the converted light additively overlap, for example to form a white light.
    For the security reasons mentioned above, the photoluminescent element thus takes on particular importance. If the photoluminescent element were to be damaged or removed from the path of the laser beam, for example following a shock, the unconverted and concentrated laser beam may be emitted by the light module in the direction initially intended for the outgoing light beam. . In these cases, safety measures should be considered to avoid endangering road users.
    One solution envisaged is to place a device for detecting the wavelength of the laser on the path of the laser beam downstream of the photoluminescent element. Thus, when the photoluminescent element no longer fulfills its role, the laser beam directly affects the detection device. If this is the case, the power supply of the laser element is interrupted by means for controlling the laser element, for example an electronic control unit.
    However, such devices are generally bulky.
    In addition, such devices require a precise arrangement of the detection device. This requires in particular a very low positioning tolerance of the light guiding means with respect to the optical means.
    BRIEF SUMMARY OF THE INVENTION
    The present invention proposes a light module of the type described above, characterized in that the detection device is arranged outside the second cone of light and in that the light module comprises a deflection means arranged across the second cone of light for deflect the incident light into a third cone of light directed towards the detection device.
    The outgoing light beam is directed towards the outside of the vehicle, for example towards the front, to carry out a lighting or signaling function.
    Advantageously, the third cone is oriented in a direction distinct from the direction of orientation of the second cone and / or has an opening angle greater than that of the second cone.
    According to other features of the invention: the deflection means comprises at least one optical element which is traversed by the light and which has a light entry face of the second cone of light and an exit face of the light light according to the third cone of light; the optical element deflects the light by refraction; the optical element is formed by a prism; the optical element is formed by a lens; the deflection means comprises means for spreading the light so that the third cone of light has an opening angle greater than that of the second cone of light; at least one of the faces of the input face and the output face of the optical element is structured to spread the light; at least one of the faces of the input face and the output face of the optical element has a surface state diffusing the light; the deflection means being for example a plate made of a transparent or translucent material and of which at least one of the inlet or outlet faces, or both, is grained, - the optical element is made of a diffusing material the light ; the light module comprises at least two detection devices which are each arranged in the third cone of light; each detection device is arranged outside the second cone of light; the optical means comprises a reflection surface of which a main portion reflects light coming from the photoluminescent element to form said outgoing light beam; the guide portion is formed by a secondary portion of the reflection surface which reflects the light coming from the first cone of light in the second cone of light; - The guide portion is formed by an orifice which passes through a secondary portion of the reflection surface; the detection device comprises a photodiode; the detection device and the laser element are carried by a common support, in particular by a common electronic card; the light module comprises means for controlling the laser element which is intended to interrupt the emission of the laser beam when the detection device detects an intensity greater than the predetermined threshold; - The guide portion of the optical means guides at least a portion of the light emitted into said first cone of light in a second light cone oriented to a second determined direction which is different from the first direction of emission of the outgoing light beam; - The deflection means is formed of at least one optical element separate from the element carrying the guide portion; the guide portion is fixedly supported by the optical means.
    BRIEF DESCRIPTION OF THE FIGURES Other features and advantages of the invention will become apparent upon reading the following detailed description for the understanding of which reference will be made to the appended drawings, in which: FIG. 1 is a diagrammatic view of FIG. axial section which represents a light module with a laser element made according to a first embodiment of the invention, the light module emitting an outgoing light beam; - Figure 2 is a view similar to that of Figure 1 which shows the light module of Figure 1 in case of malfunction, the laser beam being guided and then deflected to a detection device; FIG. 3 is a view similar to that of FIG. 2, which shows a second embodiment of the invention in which the means of deflecting the light beam comprises two optical elements; FIG. 4 is a view similar to that of FIG. 3, which shows a third embodiment of the invention in which the deflection means comprises an optical element which spreads the light; FIG. 5 is a detail view showing the optical element of FIG. 1 equipped with structured faces for spreading the light; - Figure 6 is a view similar to that of Figure 5 which shows an alternative embodiment of the optical element equipped with light diffusing faces; - Figure 7 is a view similar to that of Figure 4 which shows a fourth embodiment of the invention wherein the light module comprises two detection devices; FIG. 8 is a view similar to that of FIG. 7, which shows an alternative embodiment of the invention in which the deflection means comprises a first optical element for refractive deflection and a second optical element for spreading the light. ; - Figure 9 is a view similar to that of Figure 6 which shows a deflection means which is equipped with an optical element adapted to deflect the overall direction of propagation of light by refraction and spread the light.
    DETAILED DESCRIPTION OF THE FIGURES
    In the remainder of the description of elements having identical structure or similar functions will be designated by the same references.
    In the description and the claims, the term "light cone" applies to the envelope of a light beam. Such a cone of light is not limited to only cones of revolution. Thus it will be understood that a cone of light may have sections of various shapes, for example round, ovoid, rectangular ...
    FIG. 1 shows a light module 10 comprising a semiconductor laser element 12. The laser element 12 is configured to emit a laser beam 14 whose envelope is delimited by a first cone 16 of light, said emission cone 16, with a very small aperture angle constricted around a global direction d 'program. In this respect, in the drawings, the laser beam 14 will be represented by a single line. This is for example a blue laser beam 14.
    When the light module is operating normally, as illustrated in FIG. 1, the laser beam 14 is intercepted by a photoluminescent element 18 which is arranged in the path of the laser beam 14. The photoluminescent element 18 is configured to convert the wavelength of at least a portion of said laser beam into an incoherent light of a wavelength different from that of the laser beam.
    In addition, the photoluminescent element 18 is designed to disperse the light passing through it.
    This is for example an optical element comprising a phosphor.
    Under the effect of the laser beam 14, the photoluminescent element 18 emits light distributed in a secondary light beam having a very wide aperture angle compared to that of the laser beam 14. The light emitted into the secondary light beam is preferably incoherent, polychromatic or white. Its light intensity is reduced compared to that of the laser beam 14. This light is no longer dangerous for road users.
    The light module 10 also has an optical means 22 for transforming the light from the photoluminescent element 18 into an outgoing light beam 24 oriented in a transmission direction "A". This outgoing light beam 24 is oriented towards the outside of the vehicle, for example towards the front, to carry out a lighting or signaling function.
    In the example shown in Figure 1, the optical means 22 has a reflection surface 26 of which a main portion 26A is substantially parabolic. The main portion 26A of the reflection surface 26 is designed to transform, by reflection, the secondary beam into a collimated outgoing beam 24 in the emission direction "A". For this purpose, the photoluminescent element 18 is arranged substantially at a focus of the main portion 26A of the reflection surface 26.
    When the photoluminescent element 18 is no longer capable of fulfilling its function, the laser beam passing near the focus of the main portion 26A of the reflection surface 26 may be returned by the latter in the direction A "emission.
    To avoid such a situation, the optical means 22 comprises a guide portion which is arranged to guide at least a portion of the light emitted into said emission cone 16 to form a light beam taken off which is delimited by a second cone 28 of light directed towards a determined direction "B" of sampling, hereinafter referred to as "sampling cone 28".
    The guide portion is fixedly supported by the optical means.
    According to the first embodiment shown in FIG. 2, the guide portion is formed by a secondary portion 26B of the reflection surface 26 which reflects the light coming from the emission cone 16 in the sampling cone 28. Since the secondary portion 26B has a substantially smooth surface state, the opening angle of the sampling cone 28 remains substantially unchanged from that of the emission cone 16. For this reason, the laser beam 14 reflected towards the sampling direction "B" is also represented by a line in FIG.
    Said second determined "B" direction of sampling is different from the first "A" direction of emission of the outgoing light beam 24. For this purpose, the secondary guiding portion 26B is formed by a substantially flat face forming an asperity in the main portion 26A of the reflection surface 26.
    Advantageously, the guide portion 26B is arranged at a downstream end of the reflection surface 26 in the direction of projection of the outgoing light beam 24, so as not to impinge on the effective surface of the reflection surface 26.
    In addition, the light module 10 is also equipped with at least one device 30 for detecting an incident light exceeding a predetermined threshold of light intensity, referred to as the "security threshold" thereafter. For this purpose, the detection device 30 has a light-sensitive surface. The detection device 30 is designed to detect a variation in the intensity of the light radiation beyond said safety threshold. This safety threshold is determined to ensure that the light radiation is safe for the safety of road users.
    In a variant, the detection device is designed to measure absolutely the light intensity of the detected light radiation.
    The detection device 30 is arranged to detect the light which is deflected in the sampling cone 28. Nevertheless, to give a freedom of arrangement of the detection device 30, for example to make it possible to obtain a light module that is more compact and easier to adjust, it is advantageous to be able to precisely deflect the light taken from the detector device 30. . For this purpose, the detection device 30 is arranged outside the sampling cone 28. The light module 10 comprises a deflection means 32 arranged across the sampling cone 28 for deflecting incident light into a measurement beam delimited by a third cone 34 of light, called measuring cone 34, directed towards the sensitive surface of the device. 30 of detection.
    The deflection means 32 comprises at least one optical element 36 which is traversed by the light and which has a light-beam entry face 37 included in the sampling cone 28 and an exit face 38 of the light distributed in the cone. 34 of measurement.
    The deflection means 32 is formed of at least one element separated from the optical means 22.
    In this first embodiment, the deflection means 32 comprises a single optical element 36.
    In a non-represented variant of this embodiment, the deflection means comprises a plurality of optical elements. The optical element 36 deflects the light by refraction. The optical element 36 is here formed by a prism.
    In variant not shown of the invention, the optical element is formed by a lens.
    Since, after refraction, the opening angle of the measurement cone 34 remains substantially unchanged from that of the sampling cone 28, the third cone 34 of light has been represented by a solid line in FIG. has represented in dashed lines the sampling cone 28 in which the light rays continue their journey in the absence of the deflection means 32. It can be seen that the sensitive surface of the detection device 30 is arranged outside the sampling cone 28.
    The light module 10 further comprises a control means 40, for example an electronic control unit, which is able to control the deactivation of the laser element 12, for example by cutting off the power supply to the laser element 12.
    The monitoring of the light intensity of the light rays included in the measuring cone 34 makes it possible to control that the photoluminescent element 18 fulfills its role correctly.
    When the light module is operating normally, as shown in FIG. 1, the light from the laser beam 14 has been converted and dispersed by the photoluminescent element 18 before being emitted towards the reflecting surface 26 to form the light beam 24 outgoing. The guide portion 26B removes a portion of the light rays, which thus have the same properties as the light rays forming the outgoing light beam 24. These light rays taken are then deflected by the deflection means 32 into the measurement cone 34 in a direction of propagation directed towards the sensitive surface of the detection device 30. Thus, the light incident on the detection device 30 has a moderate light intensity which is below the safety threshold, guaranteeing a secure use of the light module.
    On the other hand, the control means 40 is designed to deactivate the laser element 12 when the luminous intensity of the light rays contained in the measuring cone 34 exceeds the safety threshold.
    FIG. 2 shows the light module 10 when the photoluminescent element 18 no longer fulfills its function. The photoluminescent element 18 has for example been dislodged from its location following an impact, it is thus no longer arranged in the path of the laser beam 14. In the absence of the photoluminescent element 18, the laser beam 14, the light intensity of which is potentially dangerous, strikes directly the guide portion 26B which is arranged in the emission cone 16.
    At least a portion of the laser beam 14 is reflected in the sampling cone 28. Then the light guided in the sampling cone 28 is deflected by the optical element 36 into the measuring cone 34 in a direction of propagation directed directly towards the sensitive surface of the detection device 30. The light rays reaching the sensitive surface of the detection device 30 then have a light intensity which has not been substantially attenuated with respect to the output of the laser beam 14. Thus, the light intensity of the light rays deflected by the optical element 36 towards the detection device 30 exceeds the safety threshold.
    The exceeding of the security threshold is communicated by the detection device 30 to the control means 40. In response, the control means 40 disables the laser element 12. In this way, the control means 40 interrupts the production of the laser beam 14, preventing any harmful light radiation from coming out of the light module.
    As shown in FIGS. 1 and 2, the laser element 12 and the photodiode here forming the detection device 30 are carried by a common support 42. The common support 42 simultaneously ensures the mechanical attachment and the electrical connection of the laser element 12 and the detection device 30. The common support 42 is here formed by a common electronic card.
    The deflection means 32 advantageously makes it possible to shift the detection device 30 towards the laser element 12 on the support 42 common with respect to the sampling cone 28. This allows for a more compact support 42.
    In addition, the position of the optical element 36 forming the deflection means 32 can be adjusted independently of the position of the guide portion 26B. This makes it possible to precisely adjust the direction of propagation of the measuring cone 34 towards the sensitive surface of the detection device 30, independently of the positioning tolerances of the light guiding means.
    A second embodiment of the invention has been shown in FIG. 3. This second embodiment has many similarities with the first embodiment. Only the differences will be detailed later.
    In the light module 10 made according to this second embodiment, the guiding portion 26B deflects the light rays coming from the emission cone 16 in the same general direction as the outgoing light beam 24. In this regard, the guide portion 26B is formed by a portion of the reflection surface 26 which completes the main portion 26B of the reflection surface 26. Thus, the sampling cone 28 is oriented generally in the "A" direction of emission of the outgoing light beam 24.
    To enable the light rays of the sampling cone 28 to be deflected towards the detection device 30, the deflection means 32 here comprise a first upstream optical element 36A and a second downstream optical element 36B. The optical elements both deflect light by refraction, for example, prisms. The upstream optical element 36A is arranged across the sampling cone 28 to thereby deflect the light rays entering via its input face 37 to the downstream optical element 36B for the first time. Then the downstream optical element 36B deflects said light rays deflected by the upstream optical element 36A into the measuring cone 34 in a direction of propagation directed directly towards the detection device 30.
    The series of optical elements 36A, 36B forming the deflection means 32 thus makes it possible to deflect the light rays coming from the sampling cone 28 by a very large angle. The geometry of the reflection surface 26 is thus simplified with respect to that of the first embodiment while maintaining a very compact common support 42 for the laser element 12 and the detection device 30.
    In addition, at least one of the optical elements 36A, 36B is a separate element of the optical means 22 to allow adjustment of the direction of propagation of the measurement cone 34 independently of the positioning tolerances of the guide portion 26B.
    A third embodiment of the invention is shown in Figure 4. This embodiment is similar to that described in the first embodiment. Only the differences will be described later.
    In this third embodiment, the deflection means 32 comprises means for spreading the light so that the measurement cone 34 has an opening angle greater than that of the second sampling cone 28. Thus the measuring light beam is very divergent with respect to the beam taken.
    In the embodiment shown in Figure 4, the measuring cone 34 is directed substantially in the same direction as the cone 28 sampling. Nevertheless, part of the light rays coming from the sampling cone 28 are deflected outwards from the sampling cone 28 because of the greater opening angle of the measurement cone 34.
    The deflection means 32 here comprises a single optical element 36 designed to be traversed by the light. At least one of the input face 37 and the output face 38 of the optical element 36 is structured to spread the outgoing light into the measuring cone 34. The optical element 36 has been shown in more detail in FIG. 5. The input face 37 and the output face 38 of the optical element 36 are both structured to spread the outgoing light into the measuring cone 34. by refraction. Each face 37, 38 thus comprises ridges for spreading the light at least in a plane with an opening angle a which is substantially greater than the almost zero opening angle of the sampling cone 28. Thus, at equal distance downstream of the optical element 36, the area illuminated by the measuring cone 34 is much larger than the surface illuminated by the sampling cone 28 at the height of the support 42 of the detection device 30.
    As shown in FIG. 4, the detection device 30 is offset outside the sampling cone 28 at the periphery and inside the measuring cone 34. Thus, the detection device 30 is exposed only to the light rays deflected by the deflection means 32 and not to the light rays continuing their path in the sampling cone 28.
    Such an embodiment advantageously makes it possible to homogenize the light incident on the detection device 30.
    In addition, the measuring cone 34 has an opening angle sufficient to illuminate the entire sensitive surface of the detection device 30. This makes it possible to greatly simplify the adjustment of the saturation of the detection device.
    According to a variant of this third embodiment which is represented in FIG. 6, the optical element 36 of the deflection means 32 deflects the light by diffusion. In the example shown in Figure 6, at least one of the faces of the input face 37 and the output face 38 of the optical element has a surface state promoting light diffusion. The inlet face 37 and / or the exit face 38 is for example grained.
    Alternatively, the material constituting the optical element 36 promotes the diffusion of light.
    A fourth embodiment of the invention is shown in FIG. 7. This fourth embodiment of the invention is identical in all respects to the third embodiment except that the light module here comprises several detection devices. of the luminous intensity. At least one of the detection devices is arranged outside the sampling cone 28.
    In the example shown in FIG. 7, it comprises two detection devices 30A, 30B. Each detection device 30A, 30B is able to communicate with the control means 40 to enable the laser element 12 to be deactivated when the safety threshold is detected by one and / or the other of the devices 30A. 30B of detection.
    Each of these detection devices 30A, 30B is arranged in the measuring cone 34. The two devices 30A, 30B are here arranged outside the sampling cone 28.
    As a variant, only one of the detection devices is arranged outside the sampling cone.
    The two devices 30A, 30B are carried by the common support 42. This makes it possible to obtain a more compact light module 10.
    The presence of the two detection devices 30A, 30B makes it possible to redundantly detect the intensity of the light rays of the measuring cone 34. It is thus possible to diagnose the malfunction of one of the detection devices 30A, 30B when the detection devices 30A, 30B communicate contradictory information to the control means 40.
    As explained above, the first two embodiments make it possible to deviate the overall direction of propagation of the measuring cone 34, for example by refraction, with respect to that of the sampling cone 28, whereas the third and fourth embodiments allow deflect the light rays to obtain a measuring cone 34 having an opening angle greater than that of the sampling cone 28 without modifying the overall direction of propagation.
    Of course, as shown in FIG. 8, it is possible to combine the various embodiments described above to obtain a measuring cone 34 which simultaneously has a larger opening angle and a different overall direction of propagation relative to to that of the sampling cone 28.
    In the example shown in FIG. 8, the deflection means 32 comprises an upstream optical element 36A and a downstream optical element 36B. The function of the upstream optical element 36A here is to deflect the overall direction of propagation of the cone 28 of the refraction sample. This is a prism. An intermediate beam thus emerges from this upstream optical element 36A towards the downstream optical element 36B. This intermediate beam is included in an intermediate cone 44 having a global direction of propagation different from that of the second cone 28 of light, but their opening angles are substantially equivalent. The downstream optical element 36B here serves to deflect a portion of the light rays of the intermediate cone 44 to spread the light in the measuring cone 34. The measurement cone 34 thus has a global propagation direction identical to that of the intermediate cone 44 but an upper opening angle.
    According to an alternative embodiment shown in Figure 9, the deflection functions of the overall direction of propagation and widening of the opening angle of the measuring cone 34 are filled by a single optical element 36. This is a prism whose exit face is grained or structured to spread the light.
    It will of course be possible to envisage variant embodiments of each of the embodiments described above.
    For example, with reference to FIG. 10, the guide portion 26B is formed by an orifice which passes through a secondary portion of reflection surface 26. The light beam picked up by this orifice 26B is thus comprised in a sampling cone 28 which is directed towards the deflection means 32, here similar to that described in the second embodiment, to be conveyed to the device 30 of FIG. detection.
    This embodiment thus advantageously makes it possible to arrange the detection device 30 on the same support 42 as the laser element 14.
    Of course, such a variant is applicable to any of the previously described embodiments.
    According to another variant embodiment shown in FIG. 11, the optical means 22 transforming the light coming from the photoluminescent element 18 into an outgoing light beam 24 comprises a lens 46. The lens 46 has an incident face 48 which receives the light coming from the photoluminescent element 18.
    Said incident face 48 comprises a guide portion 48B which is for example formed by a metallized portion which is able to reflect the incident light rays of the laser beam 14 to form a sampling cone 28. As in the first embodiment, a deflection means 32, here a prism 36, deflects the light rays of the sampling cone 28 into a measuring cone 34 towards the detection device 30.
    Of course, this variant can be combined with any one of the previously described embodiments.
    The light module 10 made according to the teachings of the invention thus makes it possible to give freedom in the positioning tolerance of the detection device 30 with respect to the guide portion. Indeed, the deflection means comprises a separate optical element which is capable of being adjusted in position relative to the guide portion and with respect to the detection device 30 for precisely adjusting the direction of propagation of the measuring cone 34.
    In addition, the possibility of obtaining a measuring beam having a wider opening angle makes it possible to illuminate the entire sensitive surface of the detection device 30, thus facilitating the adjustment of its saturation.
    In addition, when the opening angle is designed to be sufficiently wide, it is possible to arrange two detection devices 30 in the same measurement beam. Thus, the light module 10 operates much more securely.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    A light module (10), in particular for a motor vehicle, intended to emit an outgoing light beam (24) and comprising: at least one semiconductor laser element (12) configured to emit a laser beam (14) in a first cone (16) of light; a photoluminescent element (18) configured to convert at least a portion of said laser beam (14); an optical means (22) for transforming the light coming from the photoluminescent element (18) into said outgoing light beam (24) oriented in a transmission direction (A), the optical means (22) comprising a portion (26B) ) arranged to guide at least a portion of the light emitted into said first cone (16) of light into a second cone (28) of light; at least one device (30) for detecting an incident light exceeding a predetermined threshold of luminous intensity; characterized in that the detection device (30) is arranged outside the second cone (28) of light and in that the light module (10) comprises deflection means (32) arranged across the second cone (28). of light to deflect incident light into a third cone (34) of light directed toward the detection device (30).
    [2" id="c-fr-0002]
    2. module (10) luminous according to the preceding claim, characterized in that the means (32) of deflection comprises at least one element (36, 36A, 36B) optical which is traversed by the light and which has a face (37). input of the light of the second cone (28) of light and a face (38) of light output according to the third cone (34) of light.
    [3" id="c-fr-0003]
    3. Module (10) light according to the preceding claim, characterized in that the element (36, 36A) optics deflects the light by refraction.
    [4" id="c-fr-0004]
    4. Module (10) light according to any one of the preceding claims, characterized in that the means (32) of deflection comprises means for spreading the light so that the third cone (34) of light has an angle of opening greater than that of the second cone (28) of light.
    [5" id="c-fr-0005]
    5. Module (10) light according to claim 4, characterized in that at least one of the faces of the face (37) of input and the face (38) of the output element (36) optical present a surface state diffusing the light.
    [6" id="c-fr-0006]
    6. Module (10) light according to any one of claims 4 or 5, characterized in that it comprises at least two detection devices (30A, 30B) which are each arranged in the third cone (34) of light.
    [7" id="c-fr-0007]
    7. Module (10) light according to the preceding claim, characterized in that each device (30A, 30B) of detection is arranged outside the second cone (28) of light.
    [8" id="c-fr-0008]
    8. Module (10) light according to any one of the preceding claims, characterized in that the means (22) comprises a optical surface (26) of reflection of which a portion (26A) reflects principal light from the element (18) photoluminescent to form said outgoing light beam (24).
    [9" id="c-fr-0009]
    9. Module (10) luminous according to the preceding claim, characterized in that the guide portion is formed by a portion (26B) of the secondary surface (26) of reflection which reflects light from the first cone (16) of light in the second cone (28) of light.
    [10" id="c-fr-0010]
    10. Module (10) light according to claim 8, characterized in that the guide portion is formed by an orifice (26B) which passes through a secondary portion of the surface (26) of reflection.
    [11" id="c-fr-0011]
    11. Module (10) light according to any one of the preceding claims, characterized in that the device (30) of detection and the element (12) laser are carried by a common support (42), in particular by an electronic card common.
    [12" id="c-fr-0012]
    12. Module (10) light according to any one of the preceding claims, characterized in that it comprises means (40) for controlling the element (12) laser which is intended to interrupt the emission of the beam (14). ) laser when the detection device (30) detects an intensity greater than the predetermined threshold.
    [13" id="c-fr-0013]
    13. Module (10) light according to any one of the preceding claims, characterized in that the portion (26B) for guiding the means (22) optical guide at least a portion of the light emitted in said first cone (16) of light in a second cone (28) of light directed towards a second direction (B) determined which is different from the first direction of emission (A) of the light beam (24) outgoing.
    [14" id="c-fr-0014]
    14. module (10) luminous according to any one of the preceding claims, characterized in that the means (32) of deflection is formed of at least one element (36, 36A, 36B) optical separated from the element bearing the guide portion.
    [15" id="c-fr-0015]
    15. Module (10) light according to any one of the preceding claims, characterized in that the portion (26B) of guide is carried fixedly by the means (22) optical.
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    同族专利:
    公开号 | 公开日
    EP3242079B1|2020-09-02|
    JP2017208331A|2017-11-24|
    CN107388152A|2017-11-24|
    US20180337511A1|2018-11-22|
    CN107388152B|2021-05-04|
    US10090635B2|2018-10-02|
    US10511136B2|2019-12-17|
    US20170324214A1|2017-11-09|
    KR20170125743A|2017-11-15|
    FR3051535B1|2018-06-29|
    EP3242079A1|2017-11-08|
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    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102012220481A1|2012-11-09|2014-05-15|Automotive Lighting Reutlingen Gmbh|light module|
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    DE102014205606A1|2014-03-26|2015-10-01|Osram Gmbh|Lighting device with light mixing element and phosphor volume|
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    US6975465B1|2002-04-03|2005-12-13|University Of Central Florida Research Foundation, Inc.|Method and apparatus for use of beam control prisms with diode laser arrays|
    FR3051535B1|2016-05-04|2018-06-29|Valeo Vision|LUMINOUS MODULE COMPRISING A LASER ELEMENT|FR3051534B1|2016-05-04|2020-10-02|Valeo Vision|LIGHT MODULE CONTAINING A LASER ELEMENT|
    FR3051535B1|2016-05-04|2018-06-29|Valeo Vision|LUMINOUS MODULE COMPRISING A LASER ELEMENT|
    DE102016117411B4|2016-09-15|2020-03-26|Varroc Lighting Systems, s.r.o.|Lighting system for a motor vehicle with a laser light source|
    法律状态:
    2017-05-30| PLFP| Fee payment|Year of fee payment: 2 |
    2017-11-24| PLSC| Publication of the preliminary search report|Effective date: 20171124 |
    2018-05-28| PLFP| Fee payment|Year of fee payment: 3 |
    2019-05-31| PLFP| Fee payment|Year of fee payment: 4 |
    2020-05-30| PLFP| Fee payment|Year of fee payment: 5 |
    2021-05-31| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1654056A|FR3051535B1|2016-05-04|2016-05-04|LUMINOUS MODULE COMPRISING A LASER ELEMENT|
    FR1654056|2016-05-04|FR1654056A| FR3051535B1|2016-05-04|2016-05-04|LUMINOUS MODULE COMPRISING A LASER ELEMENT|
    JP2017091856A| JP2017208331A|2016-05-04|2017-05-02|Optical module provided with laser element|
    EP17169330.2A| EP3242079B1|2016-05-04|2017-05-03|Light module comprising a laser element|
    KR1020170056879A| KR20170125743A|2016-05-04|2017-05-04|Light module comprising a laser element|
    CN201710310287.1A| CN107388152B|2016-05-04|2017-05-04|Lamp module comprising a laser element|
    US15/586,883| US10090635B2|2016-05-04|2017-05-04|Light module comprising a laser element|
    US16/050,677| US10511136B2|2016-05-04|2018-07-31|Light module comprising a laser element|
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