• 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:
    Lighting module (1) for a vehicle headlight (2), wherein the lighting module (1) at least one excitable by illumination with laser light for emitting visible light luminous element (3) and at least one translucent support member (4), wherein the support element (4) at least a light entry surface (4a) and at least one light exit surface (4b) opposite the light entry surface (4a), wherein the at least one luminous element (3) for irradiating light into the light entry surface (4a) at the at least one light entry surface (4a) of the carrier element (4 a) the at least one light exit surface (4b) of the carrier element (4) is delimited by an opaque masking (5) bordering the light exit surface (4b) or b) the at least one light exit surface (4b) extends to side surfaces (6a to 6d) of the carrier element (4), wherein at least one side surface (6b) is adjacent to one another end side portions (6b ', 6b' ') which are inclined to form a light-dark boundary to each other.
    公开号:AT517409A1
    申请号:T50573/2015
    申请日:2015-06-30
    公开日:2017-01-15
    发明作者:Zorn Jürgen；Stein Martin；Edletzberger Thomas；Schragl Martin；Bemmer Christian；Schadenhofer Peter
    申请人:Zkw Group Gmbh；
    IPC主号:
    专利说明:

    Light module for a vehicle headlight
    The invention relates to a lighting module for a vehicle headlight, wherein the lighting module has at least one excitable by illumination with laser light for emitting visible light and at least one light-transmitting carrier element, wherein the carrier element has at least one light entry surface and at least one light entry surface opposite light exit surface.
    Lighting modules according to the prior art which have a light element which can be excited by laser light for emitting visible light have the disadvantage that the light emitted by the luminous element is generally non-directional and has to be positioned or shaped with respect to a downstream optics by means of additional components ,
    An object of the invention is therefore to remedy this disadvantage. This object is achieved with a lighting module of the type mentioned, in which, according to the invention, the at least one luminous element for irradiation of light in the Lichteintrittsflä-che is arranged on the at least one light entry surface of the support element, wherein a) the at least one light exit surface of the support member an opaque masking surrounding the light exit surface is bounded; or b) the at least one light exit surface extends to side surfaces of the carrier element, wherein at least one side surface has two adjoining side sections which are inclined towards each other to form a light-dark boundary.
    In one embodiment according to point b), the inclination of the side surfaces could be between 15 ° and 90 °. For the purposes of this disclosure, the term "laser light" is understood as meaning a light emitted by a laser light source having a wavelength between 550 and 200 nm act.
    Advantageously, it can be provided that the carrier element consists of glass.
    In particular, it can be provided that the at least one light entry surface and the at least one light exit surface are parallel to one another.
    In addition, it can be provided that the ratio of the light entry surface to the light exit surface is between 1: 1 and 1:10, the ratio of the value of the light exit surface measured in mm2 to the value of the distance between the light entrance and exit surface measured in mm smaller is 2: 1, and the ratio of the value of the light entrance surface measured in mm2 to the value of the distance between the light entrance and the light entry surface measured in mm is smaller than 1: 2. In a high-beam application, a light image with an angular width of +/- 5 ° is typically sufficient. At a typical lens focal length of 40mm, this would mean an expansion in the image plane of 10mm. As the focal length decreases, this value also becomes smaller, but also the achievable intensities are reduced. In order to achieve the highest possible intensities for the use of the light module as a high beam, it makes sense, the light spot, so excited by laser light region of the light emitting element, very small (0.1mm <D <1mm) and thus kon-centered design and additional to choose the distance between light entrance and light exit surface large to shade off the disturbing yellowing at the edge of the angle range. In order to implement the function sensibly, the minimum distance between the light entrance and exit surface of 10 mm results; at longer distances, the light utilization efficiency of the system is reduced, but the achievable maximum intensity is increased. In an application for homogeneous illumination, in which no high intensities are required, it makes sense to implement a larger light spot (1mm <D <10mm). Here, the distance between light entrance and light exit can be less than 10mm. But there are also applications where a high distance is used to homogenize the lighting. So-called integrator rods (light entry and exit surfaces typically identical, distance very high) can be used to combine light bundles of different light sources to form a homogenous single-light axis as possible.
    In addition, it can be provided that the carrier element is a plane-parallel plate, which preferably has a thickness of at least 0.2 mm.
    In particular, it can be provided that the masking consists of a lacquer layer, a polymer or a metallic coating. A masking consisting of a metallic coating forms a reflective surface, which has advantages in particular in high-energy applications, since such a coating is particularly robust.
    To image a light-dark boundary directly on the carrier element, it can be provided that the masking delimits the light exit surface to a substantially hexagonal geometric shape, which consists of a rectangular area and a trapezoidal surface seated on one half of the rectangular area a sideline of the trapezoidal surface extends a sideline of the rectangular surface in alignment. The inclination of the side line of the trapezoidal surface, which faces the aligned extending side line is for example between 15 and 90 °.
    Another aspect of the invention relates to a vehicle headlamp comprising a lighting module according to the invention and a laser light source for exciting the lighting module or lighting element.
    In particular, it may be provided that the vehicle headlight further comprises a projection lens, in particular an aspherical projection lens, for imaging the light emitted by the light module onto a region situated in front of the vehicle headlight.
    In this case, it may be favorable if the at least one light exit surface of the lighting module has a course adapted to the field curvature of the projection lens. This makes it possible that each point is imaged on the light exit surface with the same geometric properties through the lens, whereby aberrations can be avoided.
    The invention is explained in more detail below with reference to exemplary and non-limiting embodiments, which is illustrated in the figures. It shows
    1 shows a front view of a first embodiment of a lighting module according to the invention,
    FIG. 2 shows a rear view of the lighting module from FIG. 1,
    FIG. 3 shows a side view of the lighting module according to FIGS. 1 and 2,
    FIG. 4 shows a perspective illustration of a second embodiment of a light-emitting module,
    Figure 5 is a schematic plan view of the light emitting module according to Figure 4 and
    Figure 6 is a schematic representation of a vehicle headlamp with a lighting module according to the invention.
    Unless otherwise indicated, in the following exemplary embodiments reference signs denote identical features.
    FIG. 1 shows a front view of a first embodiment of a lighting module 1 according to the invention. Therein, a lighting module 1 for a vehicle headlight 2 shown in FIG. 6 can be seen, wherein the lighting module 1 has at least one lighting element 3 that can be excited by illumination with laser light to emit visible light. The luminous element 3 is arranged on the rear side, shown in FIG. 2, of a light-transmitting carrier element 4, on which a light entry surface 4a is formed, wherein the luminous element 3 irradiates light into the carrier element 4 via the light entry surface 4a. The front side of the carrier element 4 shown in FIG. 1 has a light exit surface 4b lying opposite the light entry surface 4a, which in the exemplary embodiment shown is surrounded by an opaque masking 5 and thus delimited. The masking 5 may for example consist of a lacquer layer, a polymer or a metallic layer. The masking 5 delimits the light exit surface 4b to a substantially hexagonal geometric shape, which consists of a rectangular surface 4b 'and a trapezium surface 4b "resting on one half of the rectangular surface, one side line of the rectangular surface 4b" being a lateral line of the rectangular surface 4b 'lengthened in alignment. Thus, a light-dark boundary can already be formed directly on the light exit surface 4b of the light module 1 in a simple manner.
    FIG. 3 shows a side view of the lighting module 1 according to FIGS. 1 and 2. The light entry surface 4a and the light exit surface 4b are preferably parallel to one another. The thickness d of the carrier element 4 is preferably at least 0.2 mm.
    FIG. 4 shows a perspective view of a second embodiment of a lighting module 1. In contrast to the first embodiment, the lighting module 1 has no masking 5. The carrier element 4 is shaped so that the light exit surface 4b extends up to the side surfaces 6a to 6d of the carrier element 4, wherein at least one Seitenflä-che 6b adjacent side portions 6b 'and 6b "having to form a light-dark boundary to each other The light exit surface 4b is therefore limited directly by the side surfaces 6a to 6d.
    FIG. 5 shows a schematic plan view of the light-emitting module 1 according to FIG. 4. Similar to the light-emitting module 1 according to FIGS. 1 to 3, the light-emitting module 1 according to the second embodiment likewise has a light-emitting element 3 which irradiates light into the light-entry surface 4 a. This light can also be reflected over the side surfaces 6a to 6d, which are designed to be reflective, toward the light exit surface 4b. Thereby, it is possible to make the light entrance surface 4a smaller than the light exit surface 4b.
    6 shows a schematic illustration of a vehicle headlight 2 with a lighting module 1 according to the invention. The vehicle headlight 2 comprises a lighting module 1 according to the invention, a laser light source 7 for exciting the lighting module 1 and a projection lens 8 for imaging the light emitted by the lighting module 1 a front of the vehicle headlight 2 area. The light exit surface 4b advantageously has a shape adapted to the field curvature E of the projection lens 8, so that each point on the light exit surface 4b is imaged by the projection lens 8 with the same imaging properties.
    In view of this teaching, one skilled in the art will be able to arrive at other, not shown embodiments of the invention without inventive step. The invention is therefore not limited to the embodiments shown. Also, individual aspects of the invention or the embodiments can be taken up and combined with each other. Essential are the ideas underlying the invention, which can be performed by a person skilled in the knowledge of this description in a variety of ways and still remain maintained as such.
    权利要求:
    Claims (10)
    [1]
    1. lighting module (1) for a vehicle headlight (2), wherein the lighting module (1) at least one excitable by illumination with laser light for emitting visible light luminous element (3) and at least one translucent support member (4), wherein the carrier element (4) has at least one light entry surface (4a) and at least one light exit surface (4b) opposite the light entry surface (4a), characterized in that the at least one luminous element (3) for irradiating light into the light entry surface (4a) at the at least one light entry surface (4a) of the Trägerele-element (4) is arranged, wherein a) the at least one light exit surface (4b) of the support element (4) by a light exit surface (4b) bordering opaque masking (5) is limited or b) the at least a light exit surface (4b) extends up to side surfaces (6a to 6d) of the carrier element (4), wherein at least one side surface e (6b) has two adjoining side sections (6b ', 6b ") which are inclined to each other to form a cut-off line.
    [2]
    Second light module (1) according to claim 1, characterized in that the carrier element (4) consists of glass.
    [3]
    3. light module (1) according to claim 1 or 2, characterized in that the at least one light entry surface (4a) and the at least one light exit surface (4b) are parallel to each other.
    [4]
    4. lighting module (1) according to claim 3, characterized in that the ratio of the light entry surface (4a) to the light exit surface (4b) is between 1: 1 and 1:10, the ratio of the value of the light exit surface (4b) measured in mm2 to the Value of the distance between the light entrance and exit surface (4b) measured in mm is smaller than 2: 1 and the ratio of the value of the light entrance surface (4a) measured in mm2 to the value of the distance between the light entrance and light entry surface (4a) measured in mm less than 1: 2 is.
    [5]
    5. light module (1) according to one of claims 1 to 4, characterized in that the carrier element (4) is a plane-parallel plate, which preferably has a thickness of at least 0.2 mm.
    [6]
    6. light module (1) according to one of claims 1 to 5, characterized in that the masking (5) consists of a lacquer layer, a polymer or a metallic coating.
    [7]
    7. lighting module (1) according to one of claims 1 to 6, characterized in that the masking (5) the light exit surface (4b) limited to a substantially hexagonal geometrical shape, which consists of a rectangular area and one on one half of the right consists of a trapezoidal surface, wherein a side line of the trapezoidal surface extends a lateral line of the rectangular surface in alignment.
    [8]
    8. A vehicle headlight (2), in particular a motor vehicle headlight, comprising a lighting module (1) according to one of claims 1 to 7 and a laser light source (7) for exciting the lighting element (3).
    [9]
    9. A vehicle headlamp (2) according to claim 8, wherein the vehicle headlamp (2) further comprises a projection lens (8), in particular an aspherical projection lens for imaging the light emitted by the light module (1) on a front of the vehicle headlight (2) lying area ,
    [10]
    10. Vehicle headlight (2) according to claim 9, characterized in that the at least one light exit surface (4b) of the lighting module (1) has a curvature of the field of view (E) of the projection lens (8) adapted course.
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    同族专利:
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    法律状态:
    2022-02-15| MM01| Lapse because of not paying annual fees|Effective date: 20210630 |
    优先权:
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    ATA50573/2015A|AT517409B1|2015-06-30|2015-06-30|Lighting module for a vehicle headlight and vehicle headlights|ATA50573/2015A| AT517409B1|2015-06-30|2015-06-30|Lighting module for a vehicle headlight and vehicle headlights|
    PCT/AT2016/050189| WO2017000005A1|2015-06-30|2016-06-09|Lighting module for a vehicle headlamp|
    CN201680039048.0A| CN107787426B|2015-06-30|2016-06-09|Light module for a vehicle headlamp|
    US15/738,340| US10371335B2|2015-06-30|2016-06-09|Lighting module for a vehicle headlamp|
    EP16732218.9A| EP3317580B1|2015-06-30|2016-06-09|Lighting module for a vehicle headlamp|
    JP2017568038A| JP2018519641A|2015-06-30|2016-06-09|Light emitting module for vehicle floodlight|
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