Light module for lighting equipment

Abstract

Light module (12) for a lighting device (10) for a motor vehicle (motor vehicle), comprising - at least one laser light source (14) for emitting a primary light beam (16) of laser light having a first wavelength, - a wavelength converter (28) which is arranged such that the primary light beam (16) can be irradiated onto the wavelength converter (28), and which is designed such that a secondary light distribution (30) with at least one further wavelength can be emitted by the irradiated primary light beam (16), wherein a light modulator (20) is arranged in the beam path between the laser light source (14) and the wavelength converter (28), which light modulator has a plurality of modulation zones (44) which can be switched independently of one another into a configuration which is transparent to the primary light beam (16) and an opaque configuration, characterized in that the wavelength converter (28) is arranged such that it can be moved relative to the light modulator (20) such that the distance between the wavelength converter (28) and the light modulator (20) remains constant during the movement.

Description

[0001] The present invention relates to a light module for a lighting device, in particular for a motor vehicle (motor vehicle), according to the preamble of claim 1.

[0002] Laser radiation sources (e.g., semiconductor lasers, laser diodes) can offer advantageous properties for lighting applications, such as a small light-emitting area, high radiation intensities, and the emission of largely collimated light beams. For laser light sources, the product of the beam cross-section and the irradiated solid angle (or the étendue of the emitted radiation) can be comparatively small. This quantity can be considered a conserved quantity when passing through optical systems. Therefore, optical systems with comparatively small focal lengths, reflector diameters, and lens diameters can be constructed for laser light. Lighting systems with laser light sources can thus be realized in a comparatively small installation space.

[0003] When using laser light sources in lighting systems, however, it should be noted that lasers typically emit monochromatic light (e.g., UV light) or light within a very narrow wavelength range. Especially in the automotive sector, however, the emitted light must exhibit a color distribution and / or color temperature, which is sometimes prescribed by law. For example, a white mixed light is desired for the light emitted by a vehicle headlight.

[0004] In principle, monochromatic light can be converted into polychromatic or white light using wavelength converters. Such wavelength converters emit a light distribution with the desired spectral properties upon irradiation with (e.g., essentially monochromatic) laser light. Corresponding wavelength converters utilize conversion mechanisms such as photoluminescence, fluorescence, or phosphorescence. For this purpose, they contain, for example, a luminescent dye. The primary light irradiated onto the luminescence converter (e.g., from a blue-emitting LED or laser) excites the converter to emit light with at least one other, usually longer, wavelength (e.g., yellow). This light can be additively superimposed with components of the primary light scattered in the wavelength converter, so that overall light is emitted in an expanded spectral range.It is also conceivable that the wavelength converter acts directly as a mixed light source due to complex processes resulting from excitation with primary light.

[0005] In the field of lighting systems for motor vehicles (motor vehicles), various types of emitted light distributions are distinguished, which differ in their intensity profile and whose properties are largely regulated by law. Examples include dimmed light distributions, high beam distributions, or additional light distributions such as side illumination or fog lights.

[0006] However, integrating the units emitting the various light distributions into a motor vehicle is often problematic due to installation space constraints or design requirements. One approach, for example, is described in EP 2 318 752 B1. Here, the light from a laser light source can be selectively directed to various phosphor elements for light conversion using an optical switch, each of which is individually assigned an optical element for redirecting the generated light into a light output beam. Therefore, several different light output modules are provided, each of which requires installation space and must be coordinated with each other for reliable operation.

[0007] Various types of adaptive lighting systems (e.g. adaptive headlights) are also known in which specific areas in the emitted light distribution are masked out or darkened. This can ensure reliable illumination when cornering, for example, or avoid dazzling road users when driving ahead or approaching traffic. This can be achieved, for example, with matrix-like, individually controllable light sources and associated optical elements. Another approach is described, for example, in US 2011 / 0 249 460 A1 and US 2013 / 0 058 114 A1. Here, a focal area of ​​the laser beam is guided over a surface of a plate-like wavelength converter by means of a beam steering device in the manner of a dynamic scanning process.The focal area excited by the laser beam then acts on the wavelength converter as a local light source for the useful light with the desired spectral properties. By guiding the laser beam at a sufficiently fast speed, a multitude of different light patterns can be achieved over time. These can be redirected into a variety of different light distributions using an optical emission device. However, one problem with this is that the local irradiation of the laser on the wavelength converter can lead to local oversaturation phenomena and degradation, and subsequently to malfunctions.

[0008] US 7 733 571 B1 discloses a phosphor screen for image formation with a phosphor material that is excitable by light.

[0009] WO 2014 / 095 254 A1 describes a lighting device for a motor vehicle having a light source and a scanning device onto which light from the light source falls and which, during operation of the lighting device, generates a time-varying deflection of the incident light from the light source.

[0010] DE 10 2008 019 118 A1 discloses an infrared illumination system with at least one laser diode and a microlens array. The radiation characteristics of the illumination system are determined by the microlens array.

[0011] DE 10 2011 087 306 A1 discloses a vehicle lighting device with at least one bowl-shaped reflector that can be illuminated by a multicolor light-generating unit, and a lens arranged downstream of the reflector. The reflector is tilted differently toward the lens in a second operating position than in a first operating position.

[0012] JP 2013 - 164 937 A describes a vehicle lamp comprising a light source, a projection lens for projecting light emitted from the light source towards the front of a vehicle.

[0013] US 2013 / 0 010 492 A1 shows a lamp with a phosphor, a radiation source arranged to irradiate the phosphor with optical radiation to excite the phosphor to generate visible light, an optical system arranged to concentrate the light generated by the phosphor, and a heat sink thermally connected to the phosphor and arranged to dissipate the heat generated by the phosphor.

[0014] JP 4 096 897 B2 discloses an optical device having a light modulation element holder that holds a light modulation element so that heat can be transferred to a cooling fluid in its cooling chamber.

[0015] JP H07 - 16 244 Y2 describes a lighting system for the front of a vehicle.

[0016] The invention is based on the object of integrating various lighting functions and / or an adaptive lighting system in a small installation space in a device, while making the advantageous properties of laser light sources reliably and permanently usable.

[0017] This object is achieved by a light module according to claim 1, as can be used for a lighting device in a motor vehicle (car). The light module comprises at least one laser light source, for example a semiconductor laser or laser diode, by means of which a primary light beam of laser light can be emitted, which comprises at least a first wavelength or a first wavelength range. Furthermore, a wavelength converter is provided, which is arranged such that the primary light beam is irradiated onto the wavelength converter. The wavelength converter is designed such that, due to the irradiated primary light beam, a secondary light distribution can be emitted with the spectral properties usable for the purposes of the lighting device. The secondary light distribution therefore comprises at least one further wavelength or a further wavelength range compared to the primary light beam of laser light.

[0018] A light modulator is arranged in the beam path between the laser light source and the wavelength converter. This light modulator has a plurality of modulation zones that can be independently switched between a transparent configuration for the primary light irradiated onto the light modulator and an at least largely opaque configuration, so that a desired primary light pattern can be generated after passing through the light modulator.

[0019] The wavelength converter is positioned in the beam path following the light modulator in such a way that the primary light pattern impinges on an illuminated surface of the wavelength converter, creating a corresponding irradiation pattern there. Due to the effect of the wavelength converter (e.g., photoluminescence), this results in a corresponding luminous pattern on the wavelength converter, which emits the secondary light distribution.

[0020] By appropriately controlling the light modulator, desired modulation zones can be switched to either a transparent or opaque configuration. This allows a desired light pattern to be generated on the wavelength converter. This emits the secondary light distribution usable for automotive lighting purposes. Depending on their configuration, the modulation zones can be used to generate individually controllable luminous zones on the wavelength converter that act as local light sources for the usable secondary light distribution. Unlike the systems with time-dependent guided laser beams explained above, no focal area of ​​the primary light beam is used. This prevents local oversaturation of the wavelength converter.

[0021] In particular, the light modulator does not affect the secondary light distribution actually used, but rather the primary light beam of the laser light source before it reaches the wavelength converter. Thus, the light modulation occurs on a small beam cross-section, while still providing high intensity for the useful light. Furthermore, light modulators often utilize operating principles whose efficiency depends on the polarization of the light to be modulated. Since laser light sources, when appropriately designed, inherently emit polarized light, the laser light source can be configured such that the polarization of the primary light beam leads to optimal efficiency and optimal optical efficiency of the light modulation.

[0022] In this context, the light module refers to a component of the lighting system that actually emits the useful light. The light module can be modular in the sense of a structural unit that is used within the lighting system and can, for example, have its own module housing. However, this modular combination of components is not mandatory. The light module can also be designed as a system of individual, interacting components of a lighting system. The components are spatially distributed in the respective lighting system, for example, to ensure advantageous use of installation space, and in this sense the light module is formed merely by the functional assignment of the components to one another.

[0023] In order to transform or project the luminous pattern of the secondary light distribution into an emitted light distribution of the lighting device, the light module or the lighting device can comprise a corresponding secondary optical device. The secondary optical device is designed in particular such that a focal area (e.g. focal point or focal line) is defined, wherein the focal area lies in a light-emitting surface of the wavelength converter. As a result, the luminous pattern on the wavelength converter can be projected as an emitted light distribution into the area in front of the vehicle. The secondary optical device can be designed, for example, as a projection lens or a converging lens. However, reflectors are also conceivable. The secondary optical device can be designed in one or more stages. Due to the small étendue (see above), ieDue to the typically small beam cross-section and the small solid angle illumination of the laser light source, the secondary optics devices can have smaller dimensions (e.g. apertures, reflector diameters) than for conventional light sources of comparable power.

[0024] The light modulator is fundamentally designed for irradiation with the primary light beam. In particular, the light modulator or a light-emitting surface of the light modulator extends over a large area. It is, for example, plate-shaped. The modulation zones are preferably located adjacent to one another within the light modulator's extension area. In particular, the modulation zones are directly adjacent to one another.

[0025] The modulation zones are preferably arranged regularly, particularly in the manner of an array or matrix of pixels on the light modulator. This allows for the creation of many different light patterns. Known devices, such as those used in digital projectors or beamers, can be used as light modulators. The light modulator can be embodied as a liquid crystal modulator. For example, a design as an LCoS (Liquid Crystal on Silicon) modulator (e.g., in a transmissive or reflective configuration) or as a transmissive liquid crystal modulator (LC modulator) is conceivable.

[0026] For independent control of the various modulation zones, in particular for controlled switching into the transparent or opaque configuration, the light module can have a control device assigned to the light modulator.

[0027] In practice, a transmission of exactly zero through a modulation zone switched to the opaque configuration is often not possible. Therefore, the modulation areas may not be completely opaque to the primary light when the opaque configuration is present. However, the light modulator can be designed in such a way that dark areas (opaque modulation zones) do not cause glare. For this purpose, for example, an intensity ratio of 0.7 to 120 to 0.7 to 30 between adjacent light and dark zones may be sufficient. This contrast is usually sufficient.

[0028] According to an advantageous aspect, the light exit surface of the light modulator and the particularly plate-like wavelength converter are arranged such that they extend parallel to one another. The light exit surface of the light modulator is preferably planar. The light modulator generally has a light entry surface facing the laser light source and a light exit surface opposite this and facing the wavelength converter, wherein the light distribution of the primary light beam modulated by the modulation zones exits through the light exit surface. In particular, the wavelength converter and light modulator are both plate-like and extend parallel to one another. Due to the parallel arrangement, the primary light pattern generated by the modulation zones is transferred to the wavelength converter in a shape-preserving manner, where it results in the corresponding light pattern.

[0029] According to an advantageous embodiment, the wavelength converter is arranged directly on the light exit surface of the light modulator. The wavelength converter is preferably in direct contact with the light exit surface of the light modulator. Such a gap-free arrangement allows the primary light pattern generated by the modulation zones to be transmitted to the wavelength converter in a sharp and high-contrast manner. The wavelength converter can be implemented, for example, by coating a surface of the light modulator with a wavelength conversion material.

[0030] However, it is also conceivable to provide a gap between the light exit surface of the light modulator and the wavelength converter. This allows for improved cooling of the wavelength converter and / or the light modulator.

[0031] The wavelength converter can be mounted on a carrier or a support frame. It is also conceivable for the wavelength converter to be arranged on a particularly transparent substrate (e.g., a platelet) positioned at a distance from the light exit surface of the light modulator.

[0032] The wavelength converter is movable relative to the light modulator, preferably such that, when the two parts move relative to each other, the distance measured perpendicular to the extension surface of the wavelength converter and the light modulator remains constant. For this purpose, the wavelength converter can, for example, be arranged on a correspondingly movable support. In particular, a plate-like wavelength converter is arranged substantially parallel to the light exit surface of the light modulator, wherein the wavelength converter is rotatable about an axis extending perpendicular to the extension surface of the wavelength converter or the light exit surface of the light modulator ("rotating wavelength converter"). This makes it possible to rotate the wavelength converter at given times, so that the light pattern is created in a different area of ​​the wavelength converter.This can prevent local burn-in or oversaturation of the wavelength converter and thus increase the service life of the device.

[0033] The wavelength converter is preferably designed as a transmission element. The primary light pattern generated by the modulation zones is irradiated onto an illuminating surface of the wavelength converter, so that the modulated secondary light distribution is emitted onto the opposite radiating surface or light emission surface of the wavelength converter. In principle, the wavelength converter can also be designed as a backscattering or reflective wavelength converter, in which the light is irradiated onto the same surface from which the secondary light distribution is emitted.

[0034] The wavelength converter preferably has a plurality of scattering centers or scattering particles on its illumination surface and / or its light-emitting surface and / or in the material interior of the wavelength converter. The scattering at these scattering centers or scattering particles results in a softer definition of the sharpness of contrast transitions and the boundaries between different zones of the light pattern. For example, if the light modulator is designed with modulation zones in the manner of a pixel array or pixel matrix, then by appropriately tuning the scattering centers, the associated zones in the light pattern can be smoothly blended or overlapped.

[0035] In principle, the thickness of the wavelength converter and / or the density of the scattering centers or scattering particles can be adjusted to both the sharpness of the luminous zones and the homogeneity of the light distribution. Overlapping or blurred boundaries between light and dark zones on the wavelength converter may be desirable depending on the application, for example, to avoid disturbingly sharp contrasts in a spotlight.

[0036] For further refinement, a primary laser optics system is provided in the beam path between the laser light source and the light modulator. This system is designed, in particular, to guide the primary light beam in a suitable shape to the light modulator and, if necessary, to reshape the primary light beam.

[0037] The primary laser optics are preferably designed such that the primary light beam illuminates the light entry surface of the light modulator as completely as possible. In particular, the primary laser optics are designed so that the primary light beam is directed completely onto the light entry surface, ensuring no light is lost. For example, it is conceivable for the primary light beam to be expanded by the primary laser optics before impinging on the light entry surface in such a way that optimal and, in particular, complete illumination is achieved.

[0038] In principle, the primary laser optics can be designed such that the light entry surface of the light modulator is irradiated homogeneously and / or with a constant intensity profile. However, it is also conceivable that the primary laser optics generate an intensity profile of the primary light beam on the light modulator that is tailored to the desired secondary light distribution. Overall, the luminous intensity of the various regions of the light pattern generated on the wavelength converter is determined by a combination of the control of the light modulator and the effect of the primary laser optics.

[0039] The primary laser optics can be designed, for example, as a lens, in particular a converging lens or a diverging lens. The primary laser optics can also comprise a lens arrangement with multiple lens elements.

[0040] The primary laser optics can be designed to create illuminated areas with locally increased intensity on the wavelength converter. For example, an area on the wavelength converter can be particularly brightly illuminated, which, in the case of a high beam, acts as a spot light distribution, particularly in a central area of ​​the light distribution. Off-center concentrations are also conceivable, of course. For this purpose, the primary laser optics can be designed as a freeform lens.

[0041] According to an advantageous embodiment, the laser primary optics is designed as an optical array or optical matrix with a plurality of optical elements arranged side by side, with each optical element being assigned to a modulation zone and the light modulator in such a way that the portion of the primary light beam guided by the respective optical element impinges on the assigned modulation zone. For example, the optical array can be designed as a microlens array or microlens matrix, with each microlens being assigned to a pixel on the light modulator. Optical efficiency can be increased by assigning optical elements and modulation zones.

[0042] To further shape the secondary light distribution, a movable diaphragm can be provided in the beam path downstream of the wavelength converter. This movable diaphragm can be moved into a first diaphragm configuration and into a second diaphragm configuration, in particular such that a region of the secondary light distribution is shaded in at least one diaphragm configuration. For example, a type of retractable or foldable diaphragm can be provided. Using a suitable diaphragm, for example, a light distribution with an extended cut-off line can be achieved, as is particularly desirable for low beam headlights in the automotive sector.

[0043] To further increase the service life, a cooling device can be provided for cooling the wavelength converter and / or the light modulator. For example, the wavelength converter can be arranged on a carrier and / or substrate, with additional cooling elements (e.g., cooling fins) arranged on the carrier and / or substrate. An active fan can also be provided.

[0044] In principle, the object described above is also achieved by a lighting device containing the components of the light module described above. A lighting device with a light module of the type described above is also conceivable.

[0045] The invention is further explained below with reference to the figures. They show: Fig. 1 shows a lighting device with a light module according to the invention in a sketched representation; Fig. 2 sketched representation of a lighting device to explain further designs; Fig. 3 outlined representation to explain further designs.

[0046] In the following description and in the figures, the same reference symbols are used for identical or corresponding features.

[0047] The Fig. Figure 1 shows a schematic representation of a lighting device 10 for a motor vehicle. The illustrated components of the lighting device 10 can be combined to form a light module 12, for example, in a separate light module housing (not shown).

[0048] The light module comprises a laser light source 14, by means of which a primary light beam 16 of laser light is emitted. The laser light can, for example, be nearly monochromatic with light in a first wavelength range. The primary light beam 16 is directed onto a light modulator 20 by means of a laser primary optics 18. The primary light beam 16 can be pre-shaped, as explained in more detail below.

[0049] The light modulator 20 has a light entry surface 22, which is almost flat in the example shown, onto which the primary light beam 16 (laser light) impinges. The light modulator 20 is designed to spatially vary the transmission of the luminous flux impinging on the light entry surface 22, so that a primary light pattern with light and dark zones emerges through a light exit surface 24 opposite the light entry surface 22. For this purpose, the light modulator 20 (in particular with regard to the light exit surface 24) has a plurality of modulation zones 44, which can be switched independently of one another into a transparent configuration and an opaque configuration. These modulation zones 44 are Fig. 1 only outlined and will be further explained below. Fig. 3 is explained in more detail by way of example. A control device 26 is provided for controlling the individual modulation zones.

[0050] A wavelength converter 28 is provided in the beam path following the light exit surface 24. This converts the laser light of the primary light beam 16, for example, using photoluminescence, into a secondary light distribution 30 that has the spectral properties usable for the purposes of the lighting device (e.g., polychromatic or white light). Since the wavelength converter 28 is irradiated with the primary light pattern modulated by the light modulator 20, a desired light pattern can be achieved on a light-emitting surface 32 of the wavelength converter 28. For this purpose, corresponding modulation zones 44 of the light modulator 20 can be switched to their transparent or opaque configuration.

[0051] In the example shown, the wavelength converter is plate-shaped. It has a substantially flat light-emitting surface 32 and a substantially flat illumination surface facing the light modulator 20. Curved or differently shaped designs are also conceivable.

[0052] In the Fig. In the embodiment shown in Figure 1, the light modulator 20 and the wavelength converter 28 form an assembly, with the wavelength converter 28 being arranged directly adjacent to the light exit surface 24 of the light modulator 20. In particular, the light exit surface 24 and the wavelength converter 28 both extend substantially flat and are parallel to one another. The modulation of the primary light beam 16 generated by the light modulator 20 is thus transmitted directly to the wavelength converter 28.

[0053] The Fig. The sandwich-like combination of light modulator 20 and wavelength converter 28 shown in Figure 1 is not mandatory in principle. It is also conceivable to provide a spacer gap between wavelength converter 28 and light modulator 20. This can, for example, ensure effective cooling of the components.

[0054] A secondary optics device 34 is provided in the beam path following the wavelength converter 28. This can be designed, for example, as a projection lens. The secondary optics device 34 preferably has a focal point 36, which is located in particular in the region of the light-emitting surface 32 of the wavelength converter 28. As a result, the light pattern generated on the light-emitting surface 32 can be projected into a radiated useful light distribution 11, for example, in the area in front of the vehicle.

[0055] In the illustrated example, a movable diaphragm 38 is provided in the beam path of the secondary light distribution 30. This diaphragm can be moved, for example, into a first and a second diaphragm configuration using a pivoting device 40. Preferably, a portion of the secondary light distribution is shaded in one of the two diaphragm configurations, so that the emitted useful light distribution 11 has a corresponding dark area. This makes it possible, for example, to achieve a shaded light distribution with an extended cut-off line.

[0056] Before impinging on the light modulator 20, as already mentioned above, the primary light beam 16 can be pre-shaped by means of the laser primary optics 18. In Fig. 1, the design of the primary laser optics as a lens is indicated. It is also conceivable that the primary laser optics expands the primary light beam 16 such that the entire light entry surface 22 is completely illuminated, but no light from the primary light beam 16 radiates past the light entry surface 22.

[0057] In principle, however, the illumination of the light entry surface 22 of the light modulator 20 does not have to be homogeneous and uniform. It may also be desirable for certain areas of the light entry surface 22 to be irradiated more intensively, so that particularly strong intensities can be achieved in this area. For this purpose, the laser primary optics 18 can be designed as a freeform lens, as shown, for example, in the Fig. 2. Such a configuration may be desirable if, for example, the useful light distribution is to have 11 zones with intensity maxima, as is desired, for example, in a high beam in the manner of a central range spot.

[0058] The modulation zones of the light modulator 20 are preferably arranged in the manner of an array or matrix of pixels 44 on the light modulator 20. This is shown in the Fig. 3. In principle, however, the modulation zones of the light modulator 20 can have different shapes and are not limited to the pixel shape 44. In the Fig. 1 and Fig. 2, the modulation zones 44 are only indicated for reasons of clarity.

[0059] For a further embodiment, an optical array 19 or an optical matrix can be arranged in the beam path between the laser light source 14 and the light modulator 20. The optical array 19 can be a component of a laser primary optics 18 or form it. The optical array 19 comprises a plurality of optical elements 42 arranged side by side. For example, the optical elements 42 can be microlenses combined to form a microlens array as an optical array.

[0060] Preferably, each optical element 42 is assigned to a modulation zone 44 such that the portion of the primary light beam 16 captured by the respective optical element 42 is directed entirely onto the respectively assigned modulation zone 44. The optical elements 42 can, for example, additionally focus the portion of the primary light beam 16 assigned to them onto the assigned modulation zone 44. This can increase the optical efficiency of the system.

[0061] In all embodiments, a cooling device can be provided for cooling the wavelength converter 28 and / or the light modulator 20, for example, with cooling elements on a carrier and / or substrate of the wavelength converter 28. The heat can be dissipated, for example, to separate cooling elements, for which purpose appropriate heat conductors can be provided. These can be integrated, for example, into the carrier or substrate of the wavelength converter 28.

[0062] The Fig. 1 (e.g. aperture 28, control unit 26) can also be used in the Fig. 2 and Fig. 3 outlined facilities should be provided.

Claims

[1] Light module (12) for a lighting device (10) for a motor vehicle (motor vehicle), comprising - at least one laser light source (14) for emitting a primary light beam (16) of laser light having a first wavelength, - a wavelength converter (28) which is arranged such that the primary light beam (16) can be irradiated onto the wavelength converter (28), and which is designed such that a secondary light distribution (30) with at least one further wavelength can be emitted by the irradiated primary light beam (16), wherein a light modulator (20) is arranged in the beam path between the laser light source (14) and the wavelength converter (28), which light modulator has a plurality of modulation zones (44) which can be switched independently of one another into a configuration which is transparent to the primary light beam (16) and an opaque configuration, characterized bythat the wavelength converter (28) is arranged to be movable relative to the light modulator (20) in such a way that the distance between the wavelength converter (28) and the light modulator (20) remains constant during the movement. [2] Light module (12) according to claim 1, characterized by that a secondary optical device (34) is provided, by means of which the secondary light distribution (30) can be converted into a radiated light distribution (11) of the lighting device (10). [3] Light module (12) according to one of the preceding claims, characterized by that the light modulator (20) is designed to extend flatly in an extension area, wherein the modulation zones (44) are arranged next to one another in the extension area. [4] Light module (12) according to one of the preceding claims, characterized by that the modulation zones (44) are arranged regularly, in particular in the manner of a matrix or an array, on the light modulator (20). [5] Light module (12) according to one of the preceding claims, characterized by that the light modulator (20) has a light exit surface (24) and the wavelength converter (28) is plate-shaped and is arranged extending parallel to the light exit surface (24). [6] Light module (12) according to one of the preceding claims, characterized by that the wavelength converter (28) is arranged directly on a light exit surface (24) of the light modulator (20). [7] Light module according to one of claims 1 to 5, characterized by that a spacing gap is provided between a light exit surface (24) of the light modulator (20) and the wavelength converter (28). [8] Light module (12) according to one of the preceding claims, characterized by that the wavelength converter (28) has a plurality of scattering centers (or scattering particles) on its surfaces (32) and / or in the interior of the material. [9] Light module (12) according to one of the preceding claims, characterized by that a laser primary optics (18, 19) is provided in the beam path between the laser light source (14) and the light modulator (20). [10] Light module (12) according to the preceding claim, characterized by that the laser primary optics (18, 19) are designed such that the primary light beam (16) completely illuminates a light entry surface (22) of the light modulator (20). [11] Light module (12) according to at least claim 9, characterized by that the laser primary optics (19) has an optical array (19) with a plurality of optical elements (42) arranged next to one another, wherein one optical element (42) is assigned to each modulation zone (44) of the light modulator (20). [12] Light module (12) according to one of the preceding claims, characterized bythat in the beam path after the wavelength converter (28) a movable diaphragm (38) is provided, which is movable into a first diaphragm configuration and into a second diaphragm configuration. [13] Light module (12) according to one of the preceding claims, characterized by that a cooling device is provided for cooling the wavelength converter (28) and / or the light modulator (20).

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