Adaptive front lighting using a pixelated laser-bank for pixelated pumping of a phosphor

Abstract

The invention provides a light generating system (1000) comprising a laser bank (1300), a luminescent material (200), optics (500), and a control system (300); wherein: the laser bank (1300) comprises (a) a first subset (1310) comprising nl first solid state lasers (10) configured to generate first laser light (11), (b) a second subset (1320) comprising n2 second solid state lasers (20) configured to generate second laser light (21), and (c) a third subset (1330) comprising n3 third solid state lasers (30) configured to generate third laser light (31); the luminescent material (200) is configured to convert at least part of the first laser light (11) received by the luminescent material (200) into first luminescent material light (201 '), at least part of the second laser light (21) received by the luminescent material (200) into second luminescent material light (201"), and at least part of the third laser light (31) received by the luminescent material (200) into third luminescent material light (201"'); the laser bank (1300), the luminescent material (200), and the optics (500) are configured to generate (i) a first beam of first light (1011) comprising at least part of the first luminescent material light (201 '), wherein the first beam of first light (1011) has a first optical axis (01), (ii) a second beam of second light (1021) comprising at least part of the second luminescent material light (201"), wherein the second beam of second light (1021) has a second optical axis (02), and (iii) a third beam of third light (1031) comprising at least part of the third luminescent material light (201"'), wherein the third beam of third light (1031) has a third optical axis (03); wherein the first optical axis (01), the second optical axis (02), and the third optical axis (03) are configured mutually diverging; and the control system (300) is configured to control the first subset (1310), the second subset (1320), and the third subset (1330).

Description

[0001] Adaptive front lighting using a pixelated laser-bank for pixelated pumping of a phosphor

[0002] FIELD OF THE INVENTION

[0003] The invention relates to a light generating system comprising a laser bank, a luminescent material, optics, and a control system. The invention further relates to a vehicle comprising the light generating system.

[0004] BACKGROUND OF THE INVENTION

[0005] Light sources comprising a first light source, a reflecting wavelength converting element, and a beam shaping element are known in the art. For example, US2018017219A1 describes a white light source comprising a first light source adapted to emit first light, a reflecting wavelength converting element arranged to receive first light from the first light source and at least partly convert it to converted light, and a second light source adapted to emit blue light which in use combines with the converted light to generate white light. The white light source further comprises a beam shaping element adapted to adjust the intensity profile of the blue light emitted by the second light source to match the intensity profile of the converted light.

[0006] US2013 / 265561 Al discloses a light-emitting device that includes a plurality of laser elements, a light-emitting section for emitting light in response to a laser beam, and an emission control section for controlling whether each of the plurality of laser elements emits light or not. At least a part of the plurality of laser elements is positioned in such a manner that irradiation regions of the light-emitting section are positioned at least partially differently.

[0007] US2020 / 088374A1 discloses a vehicular headlight that for generating a clear light distribution pattern using a monolithic array light source of surface emitting lasers. The vehicular headlight includes a VCSEL array, an image generation unit including a lens array which outputs incident light from the VCSEL array as collimated light so that an image of a light distribution pattern as an illuminance distribution is generated on an output side, a light distribution pattern forming unit having an image forming surface on which the image is formed by the incident light from the image generation unit, and a projection unit outputting the incident light from the light distribution pattern forming unit to an irradiation region in front of the vehicle.

[0008] DEI 02017222632A1 discloses a lighting device with a pump radiation unit with several pump radiation sources, a phosphor arrangement with several areas, optics, and a tilting unit. The tilting unit tilts at least one pump radiation beam relative to the phosphor arrangement. A first region of the phosphor arrangement has a first phosphor for at least partial pump radiation conversion and a second region differs in its conversion properties from the first area. The at least one pump radiation beam is positioned being in a first position of the tilting unit relative to the first area and in a second position relative to the second area. The lighting device is set up for operation in such a way that pump radiation is simultaneously supplied to the first and the second area at least temporarily, whereupon a first light beam is emitted from the first area and a second light bundle also propagates out of the second region, which has a different spectral composition than the first light bundle, and furthermore, downstream of the phosphor arrangement, the first light bundle and that second light bundle is superimposed with the optics.

[0009] CN106152000A discloses a laser light module comprising a laser illumination source and a lens. The laser illumination source comprises an array of six blue laser diodes and these input their light into respective optical fibers. The optical fibers taper towards a luminescent element that converts a part of the blue laser light into yellow light to form white light that is collimated by the lens.

[0010] SUMMARY OF THE INVENTION

[0011] Adaptive lighting systems are able to dynamically adjust the brightness, direction, or color of light in response to changing conditions or specific requirements. Adaptive lighting systems can be used in various lighting applications, especially automotive lighting for vehicles. Especially, an adaptive front lighting system (AFS) for a vehicle may utilize sensors, e.g., for speed, steering, or outdoor light conditions, to selectively alter the projected light beam pattern, intensity, and direction, to anticipate for the direction and speed of the vehicle, as well as road and weather conditions. Such an adaptive approach may improve road safety and nighttime visibility by ensuring that the front light is optimally directed. Thereby, the vehicle driver's ability to see the road, obstacles, and potential hazards may be enhanced, and glare for oncoming traffic may be reduced. Furthermore, lighting efficiency may be improved while minimizing light pollution and energy consumption. Light generating systems used for AFS may be laser based. However, laserbased light generating systems for AFS may be prone to failure, may have a short lifespan, and may be costly to manufacture and install. Hence, it is an aspect of the invention to provide an alternative light generating system, which preferably further at least partly obviates one or more of above-described drawbacks. The present invention may have as object to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.

[0012] According to a first aspect, the invention provides a light generating system (“system”). Herein, the light generating system may comprise a laser bank, a luminescent material, optics, and a control system. In embodiments, the laser bank may comprise lasers (also: “laser light sources”). The lasers may especially be solid state lasers. The lasers may herein be configured to generate light (or: “radiation”). Especially, the laser bank may comprise a first subset comprising first solid state lasers (also: “first lasers”). The first solid state lasers may especially be configured to generate first laser light (or: “first light”). The first subset may comprise nl first solid state lasers. Herein, the following may apply: nl>2. Further, the laser bank may comprise a second subset comprising second solid state lasers (also: “second lasers”). The second solid state lasers may especially be configured to generate second laser light (or: “second light”). The second subset may comprise n2 second solid state lasers. Herein, the following may apply: n2>2. Furthermore, the laser bank may comprise a third subset comprising third solid state lasers (also: “third lasers”). The third solid state lasers may especially be configured to generate third laser light (or: “third light”). The third subset may comprise n3 third solid state lasers. Herein, the following may apply: n3>2. In embodiments, the laser bank may comprise a two-dimensional (“2D”) array. The array may especially comprise the nl first solid state lasers, the n2 second solid state lasers, and the n3 third solid state lasers. Further, the array may comprise a plurality of positions (for these solid state lasers). The plurality of positions may especially have a (primary) subset of np positions. The number of np positions may be equal to the number of n2 laser light sources. The subset of np positions may be configured in a sub array. The sub array may herein be configured centrally in the array. Furthermore, at least a part of the total number of n2 second solid state lasers may not be configured in the sub array. Additionally, the laser bank may be configured in thermal contact with a first thermally conductive body. Alternatively, the laser bank may comprise such a first thermally conductive body. In embodiments, the luminescent material may be configured to receive at least part of the first laser light, at least part of the second laser light, and at least part of the third laser light. Especially, the luminescent material may be configured to convert at least part of the first laser light received by the luminescent material into first luminescent material light. Further, the luminescent material may be configured to convert at least part of the second laser light received by the luminescent material into second luminescent material light. Furthermore, the luminescent material may be configured to convert at least part of the third laser light received by the luminescent material into third luminescent material light. Additionally, the luminescent material may be configured in thermal contact with a second thermally conductive body. In embodiments, the laser bank, the luminescent material, and the optics may be configured to generate a first beam of first light. The first beam of first light may especially comprise at least part of the first luminescent material light. The first beam of first light may herein have a first optical axis 01. Further, the laser bank, the luminescent material, and the optics may be configured to generate a second beam of second light. The second beam of second light may especially comprise at least part of the second luminescent material light. The second beam of second light may herein have a second optical axis 02. Furthermore, the laser bank, the luminescent material, and the optics may be configured to generate a third beam of third light. The third beam of third light may especially comprise at least part of the third luminescent material light. The third beam of third light may herein have a third optical axis 03. In embodiments, the first optical axis 01, the second optical axis 02, and the third optical axis 03 may be configured mutually diverging. Moreover, each of the first light, the second light, and the third light may be white light. Especially, each of the first light, the second light, and the third light may have a correlated color temperature (“CCT”) of at least 2000 K. Each of the first light, the second light, and the third light may further have a color rendering index (“CRI”) of at least 70. In embodiments, the light generating system may be configured to generate one or more of the first light, the second light, and the third light. Further, the control system may be configured to control the first subset, the second subset, and the third subset (individually). Hence, in embodiments the invention may provide a light generating system comprising a laser bank, a luminescent material, optics, and a control system; wherein: (1) the laser bank comprises (a) a first subset comprising nl first solid state lasers configured to generate first laser light, (b) a second subset comprising n2 second solid state lasers configured to generate second laser light, and (c) a third subset comprising n3 third solid state lasers configured to generate third laser light; wherein nl>2, n2>2, and n3>2; wherein the laser bank comprises a 2D array comprising the nl first solid state lasers, the n2 second solid state lasers, and the n3 third solid state lasers; wherein the laser bank is configured in thermal contact with a first thermally conductive body or comprises such thermally conductive body; at least a subset of the second solid state lasers is configured peripherally in the array and at least partially surrounding the sub array; (2) the luminescent material is configured to convert at least part of the first laser light received by the luminescent material into first luminescent material light, at least part of the second laser light received by the luminescent material into second luminescent material light, and at least part of the third laser light received by the luminescent material into third luminescent material light; wherein the luminescent material is configured in thermal contact with a second thermally conductive body; the optics is configured downstream of the laser bank and upstream of the luminescent material, wherein the optics comprise one or more of (i) a lens array, (ii) an array of specular mirrors and (iii) an array of refractive elements; (3) the laser bank, the luminescent material, and the optics are configured to generate (i) a first beam of first light comprising at least part of the first luminescent material light, wherein the first beam of first light has a first optical axis, (ii) a second beam of second light comprising at least part of the second luminescent material light, wherein the second beam of second light has a second optical axis, and (iii) a third beam of third light comprising at least part of the third luminescent material light, wherein the third beam of third light has a third optical axis; wherein the first optical axis, the second optical axis, and the third optical axis are configured mutually diverging; wherein each of the first light, the second light, and the third light is white light having a correlated color temperature of at least 2000 K and a color rendering index of at least 70; and (4) the light generating system is configured to generate one or more of the first light, the second light, and the third light; and the control system is configured to control the first subset, the second subset, and the third subset (individually). In yet more specific embodiments, the invention may provide a light generating system comprising a laser bank, a luminescent material, optics, and a control system; wherein: (1) the laser bank comprises (a) a first subset comprising nl first solid state lasers configured to generate first laser light, (b) a second subset comprising n2 second solid state lasers configured to generate second laser light, and (c) a third subset comprising n3 third solid state lasers configured to generate third laser light; wherein nl>2, n2>2, and n3>2; wherein the laser bank comprises a 2D array comprising the nl first solid state lasers, the n2 second solid state lasers, and the n3 third solid state lasers; wherein the array comprises a plurality of positions with a subset of np positions configured in a sub array configured centrally in the array, wherein np=n2; wherein at least a part of the total number of n2 second solid state lasers is not configured in the sub array, such as at least 50 % of the total number n2 second solid state lasers not being configured in the sub array, preferably at least 70 %, more preferably at least 80 %, even more preferably at least 90 %. The laser bank is configured in thermal contact with a first thermally conductive body or comprises such thermally conductive body; (2) the luminescent material is configured to convert at least part of the first laser light received by the luminescent material into first luminescent material light, at least part of the second laser light received by the luminescent material into second luminescent material light, and at least part of the third laser light received by the luminescent material into third luminescent material light; wherein the luminescent material is configured in thermal contact with a second thermally conductive body; (3) the laser bank, the luminescent material, and the optics are configured to generate (i) a first beam of first light comprising at least part of the first luminescent material light, wherein the first beam of first light has a first optical axis, (ii) a second beam of second light comprising at least part of the second luminescent material light, wherein the second beam of second light has a second optical axis, and (iii) a third beam of third light comprising at least part of the third luminescent material light, wherein the third beam of third light has a third optical axis; wherein the first optical axis, the second optical axis, and the third optical axis are configured mutually diverging; wherein each of the first light, the second light, and the third light is white light having a correlated color temperature of at least 2000 K and a color rendering index of at least 70; and (4) the light generating system is configured to generate one or more of the first light, the second light, and the third light; and the control system is configured to control the first subset, the second subset, and the third subset (individually).

[0013] With the present invention, a light generating system may be provided configured to generate beams of light. Especially, the light generating system may be configured to generate one or more of first light, second light, and third light (as beams of light). The beams of light may diverge. Hence, the light generating system may e.g. be used in automotive applications, or other applications, wherein beams of light may be provided in different directions. The control system may control which beam(s) are provided. For instance, the light generating system may be used as or in a headlight, allowing adaptation of the beam e.g. in dependence of driving straight or taking a turn (i.e. as or in an adaptive front lighting system).

[0014] The laser bank may in embodiments be configured to generate first laser light, second laser light, and third laser light. Especially, the first laser light, the second laser light, and the third laser light may be provided in a pattern (on the luminescent material). Further, the luminescent material may be configured to convert at least part of the first laser light into first luminescent material light, at least part of the second laser light into second luminescent material light, and at least part of the third laser light into third luminescent material light. Furthermore, the optics may be configured to shape at least part of the first laser light and / or at least part of the first luminescent material light into a first beam of first light, at least part of the second laser light and / or at least part of the second luminescent material light into a second beam of second light, and at least part of the third laser light and / or at least part of the third luminescent material light into a third beam of third light. Thereby, the laser bank, the luminescent material, and the optics may herein be configured to generate first light, second light, and third light (as beams of light with diverging directions). Especially, in embodiments a laser bank and optics may create at least three (e.g., four) laser spots that are directed towards the luminescent material. The at least three light beams from the luminescent material may then be converted by further optics to a main beam having relative high intensity and at least two side emitting beams with a relatively lower intensity. Thereby, the main beam and at least two side emitting beams may be applied in an adaptive front lighting system (AFS) for automotive applications. As such, the invention may provide a light generating system using an (advanced) pixelated laser-bank configured for pixelated pumping of a luminescent material. The laser bank may comprise a plurality of lasers arranged in an array (or: “matrix”). The array may comprise a sub array (comprising a plurality of lasers) in a central laser-bank region. Furthermore, in embodiments the sub array may comprise another plurality of lasers in an outer laser-bank region. The outer laser-bank region may at least partly surround the sub array in the central laser-bank region. The luminescent material may comprise comprises a central region and an outer region at least partly surrounding the central region. Therefore, in embodiments the plurality of lasers in the sub array may generate laser light for the central region of the luminescent material and / or the plurality of lasers in the outer laser-bank region may generate laser light for the outer region of the luminescent material.

[0015] Hence, the system may be configured such that the luminescent material converts part of the light received by the luminescent material (i.e. “partial conversion”). The remaining light source light in combination with the luminescent material light generated by the light source light may especially from in embodiments white light (comprising the luminescent material light and the remaining light source light). This may apply for the first light, the second light, and the third light.

[0016] Herein, during operation of the light generating system, the control system may control the different subsets of laser light sources. Especially, one or more of the subsets of lasers may be turned on for longer durations and / or more often than other subsets of lasers, e.g., the second lasers providing the main beam may be turned on while the first lasers and third lasers are turned off. Furthermore, one or more of the subsets of lasers may provide laser light having a higher intensity than other subsets of lasers, e.g., the second lasers providing the main beam may provide laser light having a higher intensity than other subsets of lasers. Therefore, the one or more laser subsets may generate more heat than other laser subsets during operation of the light generating system. The present invention may provide improved thermal management of the light generating system. For example, the one or more laser subsets may be arranged across the 2D array in a pattern (e.g., a checkerboard-like pattern) so that the lasers are not positioned adjacent to each other. In such embodiments, optics may facilitate guiding the laser light of different subsets so that the pattern on the 2D array is resolved into diverging beams of light from each of the subsets of lasers. Furthermore, a thermally conductive body may be provided to the laser bank and the luminescent material. Optionally, the light generating system may comprise optics (e.g., refractive structures, polarized beam splitters, and dichroic beam splitters) configured to (further) shape the beams of light and / or (further) enhance the intensity of light. Thereby, a light generating system with improved thermal management may be provided, thereby improving the performance and / or lifespan of the light generating device.

[0017] As such, the invention described herein provides a light generating system. Especially, the light generating system may comprise a laser bank, a luminescent material, optics, and a control system. In embodiments, the laser bank may be configured to generate laser light. The light generating system may comprise elements configured downstream of the laser bank, especially a luminescent material and optics. Such downstream elements may convert laser light into beams of light with (adaptable) properties that may be applied as adaptive lighting system. The terms “upstream” and “downstream” relate to an arrangement of items or features relative to the propagation of the light from a light generating means (here the especially the light source), wherein relative to a first position within a beam of light from the light generating means, a second position in the beam of light closer to the light generating means is “upstream”, and a third position within the beam of light further away from the light generating means is “downstream”.

[0018] Herein, the light generating system may comprise a luminescent material configured downstream of the laser bank. Hence, the luminescent material may especially be configured in a light receiving relationship with the laser bank(s). The luminescent material may especially be configured to receive at least part of the laser light and convert it into luminescent material light having properties that may be applied in the adaptive lighting system. Further, the light generating system may comprise optics configured downstream of the laser bank and upstream of the luminescent material and / or the light generating system may comprise optics configured downstream of the laser bank and downstream of the luminescent material. Especially, the optics may be configured downstream of the luminescent material. Hence, the laser bank, the luminescent material, and especially the optics may be configured to generate beams of light with adaptable properties. Such beams of light may be applied in automotive lighting, especially in an adaptive front lighting system (AFS). Thereby, in embodiments, the invention may provide an adaptive front lighting system using an advanced pixelated laser-bank configured for pixelated pumping of a phosphor. Here below, general features of the light generating system will be described.

[0019] As indicated above, the light generating system may comprise a laser bank. The laser bank may especially comprise multiple subsets of solid state lasers. These subsets of solid state lasers may be configured to generate laser light. The laser light may facilitate providing (adaptable) beams of light. Therefore, such laser light may be especially applicable for use in adaptive automotive lighting. In the following section, general features of the laser bank will be described. Especially, the spectral properties of the laser light of the subsets of lasers are essentially identical. For instance, the solid state lasers may be of the same bin. In embodiments, the peak wavelengths of the first laser light, the second laser light, and the third laser light may (all) be within a range of 15 nm, such as within a range of about 10 mm.

[0020] Herein, the light generating system may comprise a laser bank (or “laser array bank”). In embodiments, the laser bank comprises lasers (also: “laser light sources”). Hence, the term “laser bank” herein refers to a device comprising laser light sources. The laser light sources may especially be arranged on the laser bank, such as in a two-dimensional array (described further below). Laser banks may e.g. be used to boast the input power. Therefore, in embodiments the system may comprise a plurality of light generating devices configured in a laser bank. A laser bank may comprise a light emitting arrangement comprising an (2D) array of a plurality of laser diodes arranged on a thermally conductive carrier and a (lens array having a) plurality of collimator lenses corresponding to the laser diodes such that each laser diode of the plurality of laser diodes comprises a collimator lens for collimating laser light emitted by the laser diode. The arrangement may comprise a package architecture or a canned architecture. In case of the package architecture a laser diode chip array is arranged on the thermally conductive carrier. A plurality of electrodes may be present for electrically connecting the plurality of laser diodes. The term “laser bank” may in embodiments herein refer to a single laser bank, but may also refer, in other embodiments, to two a plurality of laser banks. The term “laser” especially refers to a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Especially, in embodiments the term “laser” may refer to a solid state laser. In specific embodiments, the terms “laser” or “laser light source”, or similar terms, may refer to a laser diode (or diode laser). The lasers may herein be configured to generate light (or: “radiation”), especially laser light. The term “laser” or “laser light source” may also relate to a plurality of (essentially identical (or different)) laser light sources, such as 2-200 (solid state) laser light sources. Hence, the term laser may herein also refer to a plurality of lasers.

[0021] Hence, in embodiments the laser comprises a laser light source. In embodiments, the terms “laser” or “solid state laser” may refer to one or more of cerium doped lithium strontium (or calcium) aluminum fluoride (Ce:LiSAF, Ce:LiCAF), chromium doped chrysoberyl (alexandrite) laser, chromium ZnSe (Cr:ZnSe) laser, divalent samarium doped calcium fluoride (Sm:CaF2) laser, Er:YAG laser, erbium doped and erbium-ytterbium codoped glass lasers, F-Center laser, holmium YAG (Ho:YAG) laser, Nd:YAG laser, NdCrYAG laser, neodymium doped yttrium calcium oxoborate Nd:YCa4O(BO3)s or Nd:YCOB, neodymium doped yttrium orthovanadate (Nd:YVO4) laser, neodymium glass (Nd:glass) laser, neodymium YLF (Nd:YLF) solid-state laser, promethium 147 doped phosphate glass (147Pm3+:glass) solid-state laser, ruby laser (AhO3:Cr3+), thulium YAG (Tm:YAG) laser, titanium sapphire (Ti:sapphire; AhO3:Ti3+) laser, trivalent uranium doped calcium fluoride (U:CaF2) solid-state laser, Ytterbium doped glass laser (rod, plate / chip, and fiber), Ytterbium YAG (Yb:YAG) laser, YbiO? (glass or ceramics) laser, etc. In embodiments, the terms “laser” or “solid state laser” may refer to one or more of a semiconductor laser diode, such as GaN, InGaN, AlGalnP, AlGaAs, InGaAsP, lead salt, vertical cavity surface emitting laser (VCSEL), quantum cascade laser, hybrid silicon laser, etc. A laser may be combined with an upconverter in order to arrive at shorter (laser) wavelengths. For instance, with some (trivalent) rare earth ions up-conversion may be obtained or with non-linear crystals up-conversion can be obtained. Alternatively, a laser can be combined with a downconverter, such as a dye laser, to arrive at longer (laser) wavelengths. Especially, the laser(s) may comprise semiconductor lasers.

[0022] The laser light source may be configured to generate laser light source light (or “laser light”). The laser bank light may essentially consist of the laser light source light. The laser may especially be configured to generate laser light source light having one or more wavelengths in the ultraviolet (UV), visible, or infrared (IR) wavelength spectrum, especially having a wavelength selected from the spectral wavelength range of 200-2000 nm, such as 300-1500 nm. The terms “light” and “radiation” are herein interchangeably used, unless clear from the context that the term “light” only refers to visible light. The terms “light” and “radiation” may thus refer to UV light, visible light, and IR light. The terms “visible”, “visible light” or “visible emission” and similar terms refer to light having one or more wavelengths in the range of about 380-780 nm. Herein, UV may especially refer to a wavelength selected from the range of 190-380 nm, such as 200-380 nm. Further, IR (infrared) may especially refer to radiation having a wavelength selected from the range of 780-3000 nm, such as 780-2000 nm. Especially, the first laser light, the second laser light and the third laser light are violet light or blue light, especially blue light. The terms “violet light” or “violet emission” especially relates to light having a wavelength in the range of about 380- 440 nm. The terms “blue light” or “blue emission” especially relates to light having a wavelength in the range of about 440-495 nm (including some violet and cyan hues).

[0023] The laser light may in embodiments comprise one or more bands, having band widths as known for lasers. In specific embodiments, the band(s) may be relatively sharp line(s), such as having full width half maximum (FWHM) in the range of less than 20 nm at RT, such as equal to or less than 10 nm. Hence, the light source light has a spectral power distribution (intensity on an energy scale as function of the wavelength) which may comprise one or more (narrow) bands. The light source light may also comprise laser light source light of two or more (different or identical) laser light sources. The phrases “different light sources” or “a plurality of different light sources”, and similar phrases, may in embodiments refer to a plurality of solid-state light sources selected from at least two different bins. Likewise, the phrases “identical light sources” or “a plurality of same light sources”, and similar phrases, may in embodiments refer to a plurality of solid-state light sources selected from the same bin.

[0024] In specific embodiments, the laser light may comprise linear polarized light. Linear polarized light may herein refer to light having oscillations predominantly aligned in a single plane. Linear polarized light may be generated by optical elements of the solid state lasers, e.g., polarizing filters and / or intracavity elements. Linear polarized light may be filtered from non-polarized light and / or light having a different polarization by specific optics (described further below).

[0025] Herein, the laser bank may comprise subsets of solid state lasers. The laser bank may in embodiments comprise at least a first subset, a second subset, and a third subset. However, specific embodiments may comprise one or more further subsets, e.g., one further subset, two further subsets, or three further subsets. Thereby, the first subset may comprise first solid state lasers (also: “first lasers”). Further, the laser bank may comprise a second subset comprising second solid state lasers (or: “second lasers”). Furthermore, the laser bank may comprise a third subset comprising third solid state lasers (also: “third lasers”). Moreover, the laser bank may optionally comprise one or more further subsets comprising further solid state lasers (or: “further lasers”). Each of the solid state lasers comprised by the subsets may be configured to generate laser light. Therefore, the first lasers may be configured to generate first laser light. Further, the second lasers may be configured to generate second laser light. Furthermore, the third lasers may be configured to generate third laser light. Moreover, the optional further lasers may be configured to generate further laser light.

[0026] Each of the subsets may comprise n solid state lasers. Therefore, the first subset may comprise nl first lasers. In embodiments, the following may apply: nl>l, such as nl>2, especially nl>3. In further embodiments, the following may apply: nl>5, such as nl>8, especially nl>10. Further, the second subset may comprise n2 second lasers. In embodiments, the following may apply: n2>l, such as n2>2, especially n2>3. In further embodiments, the following may apply: n2>5, such as n2>8, especially n2>10. Furthermore, the third subset may comprise n3 third lasers. In embodiments, the following may apply: n3>l, such as n3>2, especially n3>3. In further embodiments, the following may apply: n3>5, such as n3>8, especially n3>10. Moreover, the optional one or more further subsets may comprise nx further lasers. In embodiments, the following may apply: nx>l, such as nx>2, especially nx>3. In further embodiments, the following may apply: nx>5, such as nx>8, especially nx>10.

[0027] In certain embodiments, the subsets may comprise an identical number of lasers, i.e., nl=n2=n3. However, in other embodiments, the subsets may comprise different number of lasers, i.e., n I i2 i3. In yet other embodiments, two of the subsets may have the same number of lasers, differing from one (or more) other subset(s). Thereby, in embodiments the laser bank may comprise at least a first subset, a second subset, and a third subset, comprising nl first lasers, n2 second lasers, and n3 third lasers, configured to generate at least first laser light, second laser light, and third laser light. Optionally, further embodiments may comprise a further subset comprising nx further lasers configured to generate further laser light. Thereby, the laser bank may comprise subsets of lasers providing laser light.

[0028] In embodiments, the laser bank may comprise a two-dimensional (“2D”) array, i.e., the lasers may be arranged on the laser bank in a 2D array. The array may comprise at least the nl first solid state lasers, the n2 second solid state lasers, and the n3 third solid state lasers. Optionally, the array may comprise the further solid state lasers. Further, the array may comprise a plurality of positions of the solid state lasers on the 2D array. In general, the plurality of positions may define a matrix of positions, i.e., a rectangular (or hexagonal) array of rows and columns of positions. However, other 2D arrays are herein not excluded. Further, the plurality of positions may comprise nl positions (defined by the first subset of first lasers), n2 positions (defined by the second subset of second lasers), and n3 positions (defined by the third subset of third lasers) (and optionally nx positions when further subsets are available). The positions of the subsets of lasers may be arranged in the plurality of positions in a pattern, e.g., in rows, in columns, in diagonal lines, in a checkerboard-like pattern, in a spiral pattern, or in a quasi -randomized pattern. However, other subset patterns along the plurality of positions are herein not excluded.

[0029] Especially, in embodiments, the plurality of positions may comprise a (primary) subset of positions. The (primary) subset of positions may comprise a number of np positions. The number of np positions may especially be equal to the number of n2 laser light sources. Therefore, in embodiments, the following may apply: np=n2. The (primary) subset of positions may comprise one or more from a primary subset of nl positions and a primary subset of n3 positions. Especially, the (primary) subset of positions may comprise a primary subset of nl positions and a primary subset of n3 positions. As such, the (primary) subset of positions may comprise a primary subset of nl positions. The primary subset of nl positions may comprise at least 25% of nl positions, such as at least 50%, especially at least 75%, up to all of the nl positions. Further, the (primary) subset of positions may comprise a primary subset of n3 positions. The primary subset of n3 positions may comprise at least 25% of n3 positions, such as at least 50%, especially at least 75%, up to all of the n3 positions. Furthermore, at least a part of the total number of n2 second solid state lasers may not be comprised by the (primary) subset of positions. As such, in some embodiments, the (primary) subset of positions may comprise a primary subset of n2 positions. However, in further embodiments, the (primary) subset may comprise none of the n2 positions. Should the (primary) subset of positions comprise a primary subset of n2 positions, the primary subset of n2 positions may comprise at maximum 75% of n2 positions, such as at maximum 50%, especially at maximum 25%.

[0030] The (primary) subset of positions may especially be configured in a sub array. The sub array may comprise a plurality of positions (defined by comprised by primary subsets of positions). The sub array may especially be defined by the pattern of the (primary) subset of positions on the 2D array. Most especially, the sub array may be configured centrally in the array. Thereby, the sub array may be at least partially surrounded by other positions from the plurality of positions that are not comprised by the (primary) subset of positions. In specific embodiments, the (primary) subset may comprise none of the n2 positions, i.e., none of the total number of n2 second solid state lasers may be configured in the sub array.

[0031] Therefore, in embodiments, the plurality of positions may comprise a secondary subset of positions (that are not included in the primary subset of positions). The secondary subset of positions may at least comprise a secondary subset of n2 positions. The secondary subset of n2 positions may comprise at least 25% of n2 positions, such as at least 50%, especially at least 75%, up to all of the n2 positions. Furthermore, the secondary subset of positions may in some embodiments comprise one or more of a secondary subset of nl positions and a secondary subset of n3 positions. In specific embodiments, the secondary subset of positions may comprise a secondary subset of nl positions and a secondary subset of n3 positions. However, in other embodiments, the secondary subset may comprise none of the nl positions and the n3 positions. Should the secondary subset of positions comprise a secondary subset of nl positions, the secondary subset of nl positions may be at maximum 75% of nl positions, such as at maximum 50%, especially at maximum 25%. Furthermore, should the secondary subset of positions comprise a secondary subset of n3 positions, the secondary subset of n3 positions may be at maximum 75% of n3 positions, such as at maximum 50%, especially at maximum 25%.

[0032] The secondary subset of positions may especially be defined by the pattern of the secondary subset of positions on the 2D array. Most especially, the secondary subset of positions may be configured peripherally in the array. Thereby, the secondary subset of positions may at least partially at least partially surround the sub array, such as entirely surround the sub array. Hence, a subset of the second lasers may be configured peripherally in the array, i.e., at least partially surrounding the sub array. In specific embodiments, the secondary subset may comprise all of the n2 positions, i.e., all of the total number of n2 second solid state lasers may be configured at least partially surrounding the sub array.

[0033] As such, in embodiments, the (primary) subset of positions may especially comprise one or more of primary subset of nl positions and a primary subset of n3 positions. Further, the secondary subset of positions may comprise at least a secondary subset of n2 positions. Thereby, a secondary subset of n2 positions may in embodiments at least partially surround one or more of a primary subset of nl positions and a primary subset of n3 positions. Hence, a subset of second lasers may be spatially configured to provide laser light at least partially surrounding the laser light provided by one or more of a subset of first lasers and a subset of third lasers.

[0034] Especially, in specific embodiments, the secondary subset of n2 positions may comprise a series of n2 positions. Herein, the term “series” may especially refer to a sequence or arrangement of positions within the array. The series of n2 positions may especially be configured peripherally in the array, such as in an outer laser-bank region. Therefore, the series of n2 positions may surround the sub array configured centrally in the array. Especially, the series of n2 positions may surround the sub array comprising the subset of nl positions and the subset of n3 positions. Therefore, in certain embodiments, a series of positions of second solid state lasers may surround positions of first solid state lasers and third solid state lasers. Hence, the second lasers may be configured to provide laser light surrounding the laser light provided by the first lasers and third lasers. Especially, the optics may be arranged to provide the first beam of first light, the second beam of second light, and the third beam of third light as diverging beams of light.

[0035] In other specific embodiments, the plurality of positions may be configured in a checkerboard-like pattern. A “checkerboard-like pattern” may herein refer to a geometric arrangement where the plurality of positions alternate between at least two different positions, typically in a grid-like fashion, thereby resembling the pattern found on a checkerboard. Especially, the nl positions, the n2 positions, and the n3 positions may be configured in a checkerboard-like pattern. Therefore, the plurality of positions may alternate between at least three different positions to form the checkerboard-like pattern. In such embodiments, the (primary) subset of positions may comprise a primary subset of nl positions, a primary subset of n2 positions, and a primary subset of n3 positions. Further, in such embodiments, the secondary subset of positions may comprise a secondary subset of n2 positions, a secondary subset of n2 positions, and a secondary subset of n3 positions. Therefore, the plurality of positions comprising nl positions, n2 positions, and n3 positions may be configured to provide laser light from all (different) laser subsets in a checkerboardlike pattern. Especially, the laser light from all (different) laser subsets may be provided in a pixelated pattern. Especially, the optics may be arranged to provide the first beam of first light, the second beam of second light, and the third beam of third light as diverging beams of light. For embodiments having a checkerboard-like pattern, the optics may be configured downstream of each individual laser light source to direct the laser light in a direction with laser light of the same type, e.g., the optics may be arranged such that first laser light source light is shaped into a first beam of first light.

[0036] As described above, the laser banks are configured to generate laser light in a pattern for automotive lighting. In embodiments, the light generating system may comprise a luminescent material configured downstream of the laser bank. The luminescent material may especially be configured to receive at least part of the laser light and convert it into luminescent material light. The luminescent material light may have (adaptable) properties. Hence, the luminescent material light may provide adaptable light properties in an adaptive lighting system. In the following section, general features of the luminescent material and the luminescent material light will be described.

[0037] The general term “luminescent material” may especially refer to a material that can convert primary light, especially the laser light, into secondary light (also “luminescent material light”). In general, the first light and second light have different spectral power distributions. Hence, instead of the term “luminescent material”, also the terms “luminescent converter” or “converter” may be applied. In general, the luminescent material light has a spectral power distribution at larger wavelengths than the laser light, which is the case in so-called down-conversion. In specific embodiments, however the luminescent material light has a spectral power distribution with intensity at smaller wavelengths than the laser light, which is the case in so-called up-conversion. In embodiments, the “luminescent material” may especially refer to a material that can convert light into e.g. visible and / or infrared light. In embodiments, the term “luminescence” may refer to phosphorescence. In embodiments, the term “luminescence” may also refer to fluorescence. Instead of the term “luminescence”, also the term “luminescent material light” or “emission” may be applied. Hence, the terms “primary light” and “secondary light” may refer to excitation light and emission (light), respectively. Likewise, the term “luminescent material” may in embodiments refer to phosphorescence and / or fluorescence. The term “luminescent material” may also refer to a plurality of different luminescent materials. Examples of possible luminescent materials are indicated below. Hence, the term “luminescent material” may in specific embodiments also refer to a luminescent material composition. Instead of the term “luminescent material” also the term “phosphor” may be applied. These terms are known to the person skilled in the art. In embodiments, luminescent materials are selected from garnets and nitrides, especially doped with trivalent cerium or divalent europium, respectively. The term “nitride” may also refer to oxynitride or nitridosilicate, etc. Alternatively or additionally, the luminescent material(s) may be selected from silicates, especially doped with divalent europium.

[0038] In embodiments, the luminescent material may be configured to receive at least part of the first laser light, such as (essentially) all of the first laser light. Further, the luminescent material may be configured to receive at least part of the second laser light, such as (essentially) all of the second laser light. Furthermore, the luminescent material may be configured to receive at least part of the third laser light, such as (essentially) all of the third laser light. In embodiments, the luminescent material may be configured to receive one or more of the first laser light, the second laser light, the third laser light, and optionally further laser light. In specific embodiments, the luminescent material may be configured to receive all three of the first laser light, the second laser light, and the third laser light. As indicated above, the first laser light, the second laser light, and the third laser light may be provided in a patterned radiant flux distribution on the luminescent material.

[0039] Especially, the luminescent material may be configured to convert at least part of the first laser light received by the luminescent material into first luminescent material light, such as (essentially) all of the first laser light received by the luminescent material. Further, the luminescent material may be configured to convert at least part of the second laser light received by the luminescent material into second luminescent material light, such as (essentially) all of the second laser light received by the luminescent material. Furthermore, the luminescent material may be configured to convert at least part of the third laser light received by the luminescent material into third luminescent material light, such as (essentially) all of the first laser light received by the luminescent material.

[0040] In embodiments, the luminescent material may be configured to convert one or more of the first laser light, the second laser light, the third laser light, and optionally further laser light (e.g., fourth laser light, or fifth laser light) into luminescent material light. In specific embodiments, the luminescent material may be configured to convert all three of the first laser light, the second laser light, and the third laser light into luminescent material light. In specific embodiments, the luminescent material may be configured to convert (at least part of) the first laser light, (at least part ol) the second laser light, and (at least part ol) the third laser light received by the luminescent material at spatially different positions into luminescent material light. To distinguish the luminescent material light generated by the different subsets of lasers, it is herein indicated that the luminescent material may be configured to convert (a) the first laser light into first luminescent material light, (b) the second laser light into second luminescent material light, and (c) the third laser light into third luminescent material light. However, the luminescent material light generated may in all three (or more) options have the same spectral power distribution.

[0041] Moreover, the luminescent material light may comprise white light. Especially, one or more selected from the first luminescent material light, second luminescent material light, and third luminescent material light may comprise white light. In specific embodiments, each of the first luminescent material light, second luminescent material light, and third luminescent material light may comprise white light. The term “white light”, and similar terms, herein, is known to the person skilled in the art. It may especially relate to light having a correlated color temperature (CCT) between about 1800 K and 20000 K, for automotive lighting especially at least 2000 K, such as in the range of about 2000-20000 K, especially in the range of 2700 K and 15000 K. Yet further, in embodiments the correlated color temperature (CCT) is especially within about 15 SDCM (standard deviation of color matching) from the BBL (black body locus), especially within about 10 SDCM from the BBL, even more especially within about 5 SDCM from the BBL. Further, in embodiments, the color rendering index (CRI) of white light may be at least 65, such as at least 70, especially at least 75. Thereby, in certain embodiments, the luminescent material may be configured to provide luminescent material light having desirable (adaptable) spectral power distribution. Especially, the luminescent material may be configured to provide luminescent material light comprising white light having a CCT of at least 2000 K and a CRI of at least 70. Hence, such white light may be especially applicable for use in the beams of light for automotive lighting.

[0042] Especially, the first lasers, the second lasers, and the third lasers may be configured on the array such that the first laser light, the second laser light, and the third laser light is received by the luminescent material at spatially different positions. Further, in specific such embodiments, optics (further described below) may be configured downstream of the laser bank and upstream of the luminescent material. The optics may be configured such that the first laser light, the second laser light, and the third laser light are received by the luminescent material at spatially different positions.

[0043] In specific embodiments, the laser bank, the luminescent material, and the optics may be configured such that when during operation of the light generating system, a radiant flux of the second laser light may be lower at a central area of the luminescent material than at a peripheral area. Especially, in embodiments with a secondary subset of n2 positions at least partially surrounding the sub array, the radiant flux of the second laser light may be lower at a central area of the luminescent material than at a peripheral area as a result of a higher proportion of second layers in a peripheral area of the array (surrounding the sub array). Furthermore, in embodiments having optics (described further below) configured downstream of the laser bank and upstream of the luminescent material, the optics may be configured such that a radiant flux of the second laser light may be lower at a central area of the luminescent material than at a peripheral area. Especially, the optics may be configured such that a radiant flux of the second laser light may be lower at a central area of the luminescent material compared to the radiant flux of the second laser light at a peripheral area by at least 25%, such as at least 33%, especially at least 50%.

[0044] When a part of the second light generating devices is not configured centrally, thermal dissipation from the second laser light sources may be higher than when all second laser light sources are configured centrally. When the second laser light substantially irradiates a peripheral area, thermal dissipation from the luminescent material may be higher than when all second laser light irradiates the central area of the luminescent material.

[0045] In specific (other) embodiments, the laser bank, the luminescent material, and the optics may be configured such that when during operation of the light generating system, a radiant flux of the second laser light may be higher at a central area of the luminescent material than at a peripheral area. Especially, in embodiments with a secondary subset of n2 positions at least partially surrounding the sub array, the radiant flux of the second laser light may be higher at a central area of the luminescent material than at a peripheral area as a result of redirecting second laser light (from the peripheral area of the array (surrounding the sub array) to the central area of the luminescent material. In embodiments having optics (described further below) configured downstream of the laser bank and upstream of the luminescent material, the optics may (thus) be configured such that a radiant flux of the second laser light may be higher at a central area of the luminescent material than at a peripheral area. Especially, the optics may be configured such that a radiant flux of the second laser light may be higher at a central area of the luminescent material compared to the radiant flux of the second laser light at a peripheral area by at least 25%, such as at least 33%, especially at least 50%.

[0046] When a part of the second light generating devices is not configured centrally, thermal dissipation from the second laser light sources may be higher than when all second laser light sources are configured centrally. When the second laser light substantially irradiates a central area, (optional) downstream optics may be simpler than when all second laser light irradiates the central area of the luminescent material. During operation of the light generating system, the laser bank and the luminescent material may generate heat (as a result of generating and converting light). The solid state lasers and / or the luminescent material may be sensitive to heat, i.e., the performance and / or the lifespan of the solid state lasers and the luminescent material may decrease due to high temperatures. Therefore, the light generating system may comprise a thermally conductive body. The term “thermally conductive body” may herein refer to an element having high thermal conductivity. The thermally conductive body may especially be configured to direct heat away from other elements having a high temperature, e.g., the laser bank and / or the luminescent material. Therefore, the thermally conductive body may be configured in thermal contact with other elements having a high temperature. Especially, the thermally conductive body may be configured in direct thermal contact with other elements having a high temperature. In embodiments, the laser bank may be configured in thermal contact with a first thermally conductive body. In a specific embodiment, the laser bank may comprise such a first thermally conductive body. Additionally, the luminescent material may be configured in thermal contact with a second thermally conductive body. In specific embodiments, the first thermally conductive body and the second thermally conductive body may comprise a single thermally conductive body. Such a single thermally conductive body may be in direct thermal contact with both the laser bank and the luminescent material. Hence, the invention may provide thermal management for the laser bank and the luminescent material. Thereby, the performance and / or the lifespan of the light generating system may be improved.

[0047] In embodiments, the light generating system may further comprise optics configured downstream of the laser bank. Herein, the optics may especially be configured to shape the laser light and / or luminescent material light into (adaptable) beams of light. Hence, such beams of light may be especially applicable in adaptive automotive lighting. In the following section, general features of the optics and the beams of light will be described.

[0048] As described above, the laser light source may be configured to generate laser light, and the luminescent material may be configured to generate luminescent material light. Such light may be shaped by optics into beams of light having an optical axis (O) and a beam shape. In embodiments, the optics may be selected from one or more of a lens, a specular mirror, a polarizing beam splitter, a polarization changing element, a dichroic beam splitter, a parabolic mirror, a refractive element (other than a lens). However, further optics are known to the skilled person and are herein not excluded. Further, the term “optics” may also refer to a plurality of the same optics and / or to a plurality of different optics. For instance, the optics may comprise a lens array, or an array of specular mirrors, or an array of refractive elements (other than lenses), etc., and also combinations of two or more of these.

[0049] The beams (of laser light and / or luminescent material light) may be focused or collimated beams of light. The term “focused” may especially refer to converging to a small spot. This small spot may be at the discrete converter region, or (slightly) upstream thereof or (slightly) downstream thereof. Especially, focusing and / or collimation may be such that the cross-sectional shape (perpendicular to the optical axis) of the beam at the discrete converter region (at the side face) is essentially not larger than the cross-section shape (perpendicular to the optical axis) of the discrete converter region (where the light source light irradiates the discrete converter region). Focusing may be executed with one or more optics. In embodiments, the optics may especially perform the function of beam shaping i.e., they may transform a beam of light incident upon them. Therefore, focusing may be executed by one or more optics, such as (focusing) lenses. Especially, two lenses may be applied to focus the laser light source light. Collimation may be executed with one or more (other) optics, like collimation elements, such as lenses and / or parabolic mirrors. In embodiments, the optics may comprise a collimator and hence, may especially provide a parallel beam of light. In embodiments, the beam of (laser) light source light may be relatively highly collimated, such as in embodiments <2° (FWHM), more especially <1° (FWHM), most especially <0.5° (FWHM). Hence, <2° (FWHM) may be considered (highly) collimated light source light. Optics may therefore be used to provide (high) collimation.

[0050] In embodiments, the optics may be configured downstream of the laser bank. Especially, the optics may be configured downstream of the luminescent material. Yet in other embodiments, the luminescent material may be configured downstream of the optics. Hence, the laser bank, the luminescent material, and especially the optics may be configured to generate beams of light. Especially, the first lasers, the luminescent material, and the optics may be configured to generate a first beam comprising first light. Further, the second lasers, the luminescent material, and the optics may be configured to generate a second beam comprising second light. Furthermore, the third lasers, the luminescent material, and the optics may be configured to generate a third beam comprising third light. Therefore, the laser bank, the luminescent material, and the optics may be configured to generate beams comprising first light, second light, and third light. Hence, the beams of light may be adapted and applied for automotive lighting.

[0051] In embodiments, the laser bank, the luminescent material, and the optics may be configured to generate a first beam of first light. The first beam of first light may especially comprise at least part of the first luminescent material light, such as (essentially) all of the first luminescent material light. In specific embodiments, the first beam of light may comprise at least part of the (unconverted) first laser light, such as (essentially) all of the (unconverted) first laser light. Further, the laser bank, the luminescent material, and the optics may be configured to generate a second beam of second light. The second beam of second light may especially comprise at least part of the luminescent material light. In specific embodiments, the second beam of light may comprise at least part of the (unconverted) second laser light, such as (essentially) all of the (unconverted) second laser light. Furthermore, the laser bank, the luminescent material, and the optics may be configured to generate a third beam of third light. The third beam of third light may especially comprise at least part of the luminescent material light. In specific embodiments, the third beam of light may comprise at least part of the (unconverted) third laser light, such as (essentially) all of the (unconverted) third laser light.

[0052] Therefore, in embodiments, the beams of light may comprise at least luminescent material light (comprising white light with desired spectral wavelength properties). As such, each of the first light, the second light, and the third light may comprise white light. Therefore, each of the first light, the second light, and the third light may have a CCT of at least 2000 K, and each of the first light, the second light, and the third light may have a color rendering index CRI of at least 70. Further, in specific embodiments, the laser bank, the luminescent material, and the optics may be configured to generate (i) the first beam of first light comprising at least part of the first laser light and at least part of the luminescent material light generated by part of the first laser light, (ii) the second beam of second light comprising at least part of the second laser light and at least part of the luminescent material light generated by part of the second laser light, and (iii) the third beam of third light comprising at least part of the third laser light and at least part of the luminescent material light generated by part of the third laser light. Hence, the first light, the second light, and the third light may all have the same spectral power distribution.

[0053] The beams of light may especially have optical axes. The first beam of first light may herein have a first optical axis 01. The second beam of second light may herein have a second optical axis 02. The third beam of third light may herein have a third optical axis 03. In embodiments, the first optical axis 01, the second optical axis 02, and the third optical axis 03 may be configured mutually diverging, i.e., the first optical axis 01, the second optical axis 02, and the third optical axis 03 may be configured such that the first beam, the second beam and the third beam are not parallel beams. Therefore, the first beam, the second beam, and the third beam may have mutual angles between the first optical axis 01, the second optical axis 02 and the third optical axis 03. In embodiments, the first optical axis 01 and the second optical axis 02 may have a first mutual angle al. Further, the third optical axis 03 and the second optical axis 02 may have a second mutual angle a2. Furthermore, the first optical axis 01 and the third optical axis 03 may have a third mutual angle al.

[0054] In specific embodiments, the second optical axis 02 may especially be configured in between the first optical axis 01 and the third optical axis 03 (especially as a result of the positioning of the second lasers on the sub array and / or the positioning of the optics). Therefore, the first angle al and the second angle a2 may together approximate the third angle a3. In such embodiments, the following may apply: 0.8 < (al+a2) / a3 < 1.2, such as 0.9 < (al+a2) / a3 < 1.1, especially 0.95 < (al+a2) / a3 < 1.05. Most especially, in such embodiments, (al+a2) / a3 ~ 1.0. In further embodiments, the first mutual angle al and the second mutual angle a2 may be selected from the range of 1 - 45°, such as from the range of 1.5 - 30°, especially from the range of 2 - 15°. Therefore, the third mutual angle a3 may be selected from the range of 2 - 90°, such as from the range of 3 - 60°, especially from the range of 4 - 30°. Hence, in embodiments the first optical axis 01 and the third optical axis 03 may be configured essentially symmetric relative to the second optical axis 02. In embodiments, 0.8 < al / a2< 1.2, such as 0.9 < al / a2 < 1.1, especially 0.95 < al / a2 < 1.05. Hence, in embodiments the first beam of first light and the third beam of third light may propagate in diverging directions, but essentially symmetrical to the second beam of second light. Thus, in embodiments there may be relatively small differences in angles between the beams. Therefore, in embodiments the invention provides pixelated projection.

[0055] The first beam and third beam may converge from the second beam. The second beam may also be indicated as “main beam”. The main beam may e.g. be parallel to a main axis (or axis of elongation) of a vehicle. The first beam and third beam may also be indicated as “outer beams” or “ side beams” .

[0056] In certain embodiments, the optics may comprise an arrangement of optical components. The term “optical component” may herein refer to optical elements able to convert received light into a beam of light. The optical component may have optical properties through which the optical component may convert received light into a beam of light. The optical component may convert received light into a beam of light through one or more of focusing, diffusing, shaping, or directing received light. Such optical components and optical properties are known to the skilled person. In specific embodiments, the optical component may comprise a lens and / or a specular mirror.

[0057] Therefore, the optical component may be comprised by an arrangement of optical components. In specific embodiments, the arrangement of optical components may comprise a lens array, i.e., the optical component may comprise a lens (further described below). In further embodiments, the arrangement of optical embodiments may comprise a plurality of specular mirrors, i.e., the optical component may comprise a specular mirror (further described below). In certain embodiments, the light generating system may comprise a plurality of arrangements of optical components, such as a lens array and a plurality of specular mirrors. Hence, the optical element or arrangement of optical elements, like a lens array or a mirror array, etc., may be configured to redirect the light received by the optical element or arrangement of optical elements.

[0058] Especially, the arrangement of optical components may comprise at least nl+n2+n3 optical components, though more (or less) optical components may be possible. In specific embodiments, the arrangement of optical components may comprise nl+n2+n3+nx optical components,.

[0059] Moreover, an individual optical component may be configured downstream of each of the individual solid state lasers comprised by one or more of the first subset, the second subset, and the third subset. In embodiments having at least nl+n2+n3 optical components, an individual optical component may be configured downstream of each individual solid state laser comprised by the first subset, second subset, and third subset. Especially, in such embodiments, an individual optical component may be configured downstream of each individual solid state laser. Thereby, the arrangement of optical components may be configured to convert received laser light into at least three beams of light. Especially, the arrangement of optical components may be configured to direct the laser light in at least three respective directions, to provide at least three beams of light. These three beams of light may especially provide three (adaptable) beams to be applied in adaptive automotive lighting.

[0060] However, in other embodiments, an individual optical component may be configured downstream of a plurality of solid state lasers. For instance, an individual component may be configured downstream of one or more of the first lasers, the second lasers, and the third lasers. In a certain embodiment, an individual optical component may be configured downstream of the (primary) subset of positions, especially downstream of the sub array. In further embodiments, an individual optical component may be configured downstream of one or more of the primary subset of nl positions, the primary subset of n2 positions, and the primary subset of n3 positions. Further, an individual optical component may be configured downstream of the secondary subset of positions, especially downstream of a peripheral area of the array. In further embodiments, an individual optical component may be configured downstream of one or more of the secondary subset of nl positions, the secondary subset of n2 positions, and the secondary subset of n3 positions.

[0061] In specific embodiments, the arrangement of optical components may comprise a lens array. The lens array may especially comprise a plurality of lenses. The term “lens” may herein refer to a light transmissive optical component able to convert received light into a beam of light. The lens may convert received light into a beam of light through one or more of focusing, diffusing, shaping, or directing received light. Herein, a lens may especially convert received light into a beam of light through directing received light. A lens may provide a beam of light via optical properties of the lens shape and lens material. Such optical properties of the lens shape and lens material are known to the skilled person. In specific embodiments, the lens may comprise a wedge-shaped refractive structure. Hence, the lens array may facilitate focusing, diffusing, shaping, and directing received light to provide at least three (adaptable) beams to be applied in adaptive automotive lighting.

[0062] In certain embodiments, the arrangement of optical components may comprise a plurality of specular mirrors. The term “specular mirror” may herein refer to light transmissive optics comprising a (highly) reflective surface able to convert received light into a (focused) beam of light. The specular mirror may convert received light into a beam of light through focusing or directing received light. Herein, a specular mirror may especially convert received light into a (focused) beam of light through focusing and directing received light with minimal scattering. A specular mirror may provide a beam of light via optical properties of a (highly) reflective surface. Such specular mirrors comprising (highly) reflective surfaces are known to the skilled person. Hence, the plurality of specular mirrors may facilitate focusing and directing received light to provide at least three (adaptable) beams to be applied in adaptive automotive lighting.

[0063] As indicated above, in certain embodiments at least part of the laser light may comprise linear polarized light. In such embodiments, the optics may comprise a polarizing beam splitter. Optionally, in such embodiments, the optics may comprise a polarization changing element. The polarizing beam splitter, and / or the polarization changing element may especially be configured downstream of the laser bank. For instance, they may be used to diffuse at least part of the laser light into diffused laser light. Further, a dichroic beam splitter may be configured downstream of the luminescent material, and may be configured to combine luminescent material light and (diffused) laser light propagating to the dichroic beam splitter from different directions, and directed by the dichroic beam splitter into a mutual direction

[0064] A dichroic beam splitter may herein refer to an optical element able to selectively transmit or reflect light having different spectral power distributions. For instance, laser light may be transmitted and luminescent material light may be reflected, or laser light may be reflected and luminescent material light may be transmitted.

[0065] In some embodiments, the dichroic beam splitter may be configured to reflect at least part of the laser light, such as (essentially) all of the laser light. In further embodiments, the dichroic beam splitter may be configured to reflect one or more of at least part of the first laser light, the second laser light, and the third laser light. Moreover, the dichroic beam splitter may be configured to reflect one or more of (essentially) all of the first laser light, the second laser light, and the third laser light. Furthermore, the dichroic beam splitter may be configured to transmit at least part of the luminescent material light, such as (essentially) all of the luminescent material light. Thereby, the dichroic beam splitter may reflect at least part of the laser light and transmit at least part of the luminescent material light. Hence, the laser light may be directed in a different direction then the luminescent material light.

[0066] In other embodiments, the dichroic beam splitter may be configured to transmit at least part of the laser light, such as (essentially) all of the laser light. In further embodiments, the dichroic beam splitter may be configured to transmit one or more of (part of) the first laser light, (part ol) the second laser light, and (part ol) the third laser light. Moreover, the dichroic beam splitter may be configured to transmit one or more of (essentially) all of the first laser light, the second laser light, and the third laser light. Furthermore, the dichroic beam splitter may be configured to reflect at least part of the luminescent material light, such as (essentially) all of the luminescent material light. Thereby, the dichroic beam splitter may transmit at least part of the laser light and reflect at least part of the luminescent material light. Herein, one or more dichroic beam splitters may be applied. The term “dichroic beam splitter” may in specific embodiments refer to a plurality of dichroic beam splitters.

[0067] A polarizing beam splitter may herein refer to an optical element able to selectively transmit or reflect light having different linear polarizations. As indicated above, the solid state lasers may be configured to generate laser light having (different) linear polarization. Especially, the solid state lasers may be configured to generate laser light having a first linear polarization and laser light having a second linear polarization. For example, the lasers in the sub array may be configured to generate laser light having a first linear polarization, and the lasers in a peripheral area of the array may be configured to generate laser light having a second linear polarization. However, light having further (linear) polarization may herein not be excluded. For example, the first subset may be configured to generate first laser light having a first linear polarization, the second subset may be configured to generate second laser light having a second linear polarization, and the third subset may be configured to generate non-polarized third laser light (or alternatively, third laser light having a third linear polarization). Therefore, the polarizing beam splitter herein facilitate selectively transmitting or reflecting laser light having a linear polarization. Hence, the polarizing beam splitter may be configured to direct laser light having a linear polarization in a different direction from other laser light.

[0068] In some embodiments, the polarizing beam splitter may be configured to reflect at least part of light comprising a first linear polarization, such as (essentially) all of the light comprising a first linear polarization. Furthermore, the polarizing beam splitter may be configured to transmit at least part of the light comprising a second linear polarization, such as (essentially) all of the light comprising a second linear polarization. Thereby, the dichroic beam splitter may reflect at least part of the light comprising a first linear polarization and transmit at least part of the light comprising a second linear polarization. Hence, the light comprising different linear polarization may be directed in different directions. Herein, one or more polarizing beam splitters may be applied. The term “polarizing beam splitter” may in specific embodiments refer to a plurality of polarizing beam splitters.

[0069] In specific embodiments, the optics may comprise a polarization changing element. The polarization changing element may especially be configured to change the polarization of light. The polarization changing element may be configured to convert (nonpolarized) laser light into light having a first linear polarization or light having a second linear polarization. Further, the polarization changing element may be configured to convert light having a first linear polarization into light having a second linear polarization. Furthermore, the polarization changing element may be configured to convert light having a second linear polarization into light having a first linear polarization. Moreover, the polarization changing element may be configured to convert light having a first or second linear polarization into non-polarized light. Especially, the polarization changing element may be configured downstream of the laser bank and the polarizing beam splitter and upstream of the luminescent material. However, in specific embodiments, the polarization changing element may be configured downstream of the laser bank and upstream of the polarizing beam splitter and the luminescent material.

[0070] In specific embodiments, the light generating system may further comprise a diffuser arrangement. A diffuser arrangement may herein refer to an optical element able to diffuse (also: “spread” or “scatter”) light in a controlled manner. Thereby, a (beam of) light having homogenous diffused light may be provided. The diffuser arrangement may herein be configured to convert at least part of the laser light into diffused light, such as (essentially) all of the laser light. The diffuser arrangement may be configured to convert at least part of the first laser light received by the diffuser element into first diffused light, such as (essentially) all of the first laser light. Further, the diffuser arrangement may be configured to convert at least part of the second laser light received by the diffuser element into second diffused light, such as (essentially) all of the second laser light. Furthermore, the diffuser arrangement may be configured to convert at least part of the third laser light received by the diffuser arrangement into third diffused light, such as (essentially) all of the third laser light. In embodiments, the diffuser arrangement may comprise an at least partially polarization maintaining diffuser.

[0071] In embodiments having a diffuser arrangement, the luminescent material may especially be configured in the reflective mode. Additionally, the diffuser arrangement may be configured in the reflective mode. In such embodiments, the diffuser arrangement may especially be configured to diffuse at least part of laser light (and optionally part of the luminescent material light) towards the luminescent material.

[0072] Summarizing, the light generating system may herein be configured to generate beams of light. Especially, the light generating system may be configured to generate one or more of first light, second light, and third light (as beams of light). The laser bank may in embodiments be configured to generate first laser light, second laser light, and third laser light. Especially, the first laser light, the second laser light, and the third laser light may be provided in a pattern. Further, the luminescent material may be configured to convert at least part of the first laser light into first luminescent material light, at least part of the second laser light into second luminescent material light, and at least part of the third laser light into third luminescent material light. Furthermore, the optics may be configured to shape at least part of the first laser light and / or at least part of the first luminescent material light into a first beam of first light, at least part of the second laser light and / or at least part of the second luminescent material light into a second beam of second light, and at least part of the third laser light and / or at least part of the third luminescent material light into a third beam of third light. Thereby, the laser bank, the luminescent material, and the optics may herein be configured to generate first light, second light, and third light (as beams of light). Most especially, the light generating system may be configured to generate a main beam having relative high intensity and at least two side emitting beams with a relatively lower intensity.

[0073] Basically, two options can be chosen to create embodiments wherein non- centrally arranged solid state lasers provide contribute to a central beam and / or wherein centrally arranged solid state laser provide to side beams. In a first line of embodiments, optics may be configured downstream of the laser light sources and upstream of the luminescent material, such that non-centrally arranged solid state lasers provide contribute to a central beam and / or wherein centrally arranged solid state laser provide to side beams. In a second line of embodiments, optics may be configured downstream of the luminescent material, such that non-centrally arranged solid state lasers provide contribute to a central beam and / or wherein centrally arranged solid state laser provide to side beams. A combination of these lines of embodiments may also be possible.

[0074] In specific (other) embodiments, the laser bank, the luminescent material, and the optics, including optics configured downstream of the luminescent material, may be configured such that the luminescent material light may escape in multiple directions, essentially dependent upon which part of the luminescent material is irradiated by the solid state lasers. In this way, (a) a first subset of solid state lasers may address part of the luminescent material, such that the luminescent material light generated by the first laser light, escapes via the downstream optics essentially as first beam of first light, (b) a second subset of solid state lasers may address part of the luminescent material, such that the luminescent material light generated by the second laser light, escapes via the downstream optics essentially as second beam of second light, and (c) a third subset of solid state lasers may address part of the luminescent material, such that the luminescent material light generated by the third laser light, escapes via the downstream optics essentially as third beam of third light.

[0075] For the sake of completeness, it is indicated that the downstream optics may (thus) be selected from one or more of a lens, a specular mirror, a polarizing beam splitter, a polarization changing element, a dichroic beam splitter, a parabolic mirror, a refractive element (other than a lens). However, further downstream optics are known to the skilled person and are herein not excluded. Further, the term “downstream optics” may also refer to a plurality of the same downstream optics and / or to a plurality of different downstream optics. For instance, the downstream optics may comprise a lens array, or an array of specular mirrors, or an array of refractive elements (other than lenses), etc., and also combinations of two or more of these. The term “downstream optics” especially refers to optics that are configured in a light-receiving relationship with the luminescent material. Or, in other words, at least part of the luminescent material light escaping from the luminescent material will propagate to these downstream optics (and will be reflected, refracted, etc., thereby, as known to a person skilled in the art).

[0076] As indicated above, the light generating system may comprise a control system. The control system may especially be configured to control the light generated by the light generating system. The term “controlling” and similar terms especially refer at least to determining the behavior or supervising the running of an element. Hence, herein “controlling” and similar terms may e.g. refer to imposing behavior to the element (determining the behavior or supervising the running of an element), etc., such as e.g. measuring, displaying, actuating, opening, shifting, changing temperature, etc.. Beyond that, the term “controlling” and similar terms may additionally include monitoring. Hence, the term “controlling” and similar terms may include imposing behavior on an element and also imposing behavior on an element and monitoring the element. The controlling of the element can be done with a control system, which may also be indicated as “controller”. The control system and the element may thus at least temporarily, or permanently, functionally be coupled. The element may comprise the control system. In embodiments, the control system and element may not be physically coupled. Control can be done via wired and / or wireless control. The term “control system” may also refer to a plurality of different control systems, which especially are functionally coupled, and of which e.g. one control system may be a master control system and one or more others may be slave control systems. A control system may comprise or may be functionally coupled to a user interface.

[0077] The control system may also be configured to receive and execute instructions from a remote control. In embodiments, the control system may be controlled via an App on a device, such as a portable device, like a Smartphone or I-phone, a tablet, etc.. The device is thus not necessarily coupled to the lighting system, but may be (temporarily) functionally coupled to the lighting system. Hence, in embodiments the control system may (also) be configured to be controlled by an App on a remote device. In such embodiments the control system of the lighting system may be a slave control system or control in a slave mode. For instance, the lighting system may be identifiable with a code, especially a unique code for the respective lighting system. The control system of the lighting system may be configured to be controlled by an external control system which has access to the lighting system on the basis of knowledge (input by a user interface of with an optical sensor (e.g. QR code reader) of the (unique) code. The lighting system may also comprise means for communicating with other systems or devices, such as on the basis of Bluetooth, Thread, WIFI, LiFi, ZigBee, BLE or WiMAX, or another wireless technology.

[0078] The system, or apparatus, or device may execute an action in a “mode” or “operation mode” or “mode of operation” or “operational mode”. The term “operational mode may also be indicated as “controlling mode”. Likewise, in a method an action or stage, or step may be executed in a “mode” or “operation mode” or “mode of operation” or “operational mode”. This does not exclude that the system, or apparatus, or device may also be adapted for providing another controlling mode, or a plurality of other controlling modes. Likewise, this may not exclude that before executing the mode and / or after executing the mode one or more other modes may be executed.

[0079] However, in embodiments a control system may be available, that is adapted to provide at least the controlling mode. Would other modes be available, the choice of such modes may especially be executed via a user interface, though other options, like executing a mode in dependence of a sensor signal or a (time) scheme, may also be possible. The operation mode may in embodiments also refer to a system, or apparatus, or device, that can only operate in a single operation mode (i.e. “on”, without further tunability). Hence, in embodiments, the control system may control in dependence of one or more of an input signal of a user interface, a sensor signal (of a sensor), and a timer. The term “timer” may refer to a clock and / or a predetermined time scheme.

[0080] Herein, the control system may be configured to control one or more of the first subset of lasers, the second subset of lasers, and the third subset of lasers. Especially, the control system may be configured to control the first subset of lasers, the second subset of lasers, and the third subset of lasers. Most especially, the control system may be configured to control the first subset of lasers, the second subset of lasers, and the third subset of lasers (individually). Thereby, the control system may be especially configured to control the first beam of first light, the second beam of second light, and the third beam of third light (individually). Hence, the control system may be able to adjust the first beam of first light, the second beam of second light, and the third beam of third light (individually). Especially, the beams of light may be adjusted by the control system in response to a signal provided sensors, e.g., for speed, steering, or outdoor light conditions, to selectively alter the projected light beam pattern, intensity and direction, to anticipate for the direction and speed of the vehicle, as well as road and weather conditions.

[0081] In specific embodiments, the invention provides a vehicle comprising the light generating system according to any one of the preceding claims as adaptive front lighting system (AFS). The vehicle may be selected from the group comprising passenger cars, sedans, electric cars, hybrid cars, sports cars, sport utility cars, luxury cars, compact cars, motorcycles, electric bicycles, retrofitted cars, vans, and transport trucks. The vehicle may also be selected from the group comprising ships and planes. The vehicle equipped with an AFS may comprise the light generating system to enhance nighttime driving safety and visibility. The vehicle may further comprises sensors that monitor various parameters. The sensors may collect information (or: “data”) on the vehicle's speed, steering angle, ambient lighting conditions, and nearby vehicles. The sensors may provide a signal related to the light generating system, especially to the control system. The control system of the light generating system may process information in real-time and (individually) adjust the first beam of first light, the second beam of second light, and the third beam of third light. Thereby, the light generating system may dynamically adapt the lighting based on the vehicle's speed and steering angle, swiveling the headlamps to illuminate the road around curves and comers. The light generating system may also incorporate features such as high- beam assist, adaptive beam shaping, and cornering lights to optimize visibility while minimizing glare for other drivers. Hence, an AFS may improve road safety and driver comfort by providing a suitable amount of light having a suitable type of wavelength in a suitable direction at a suitable time.

[0082] Moreover, in another aspect of the invention, the invention provides a lighting device. The lighting device may in embodiments be selected from the group of a lamp, a luminaire, a projector device, a disinfection device, a photochemical reactor, and an optical wireless communication device. The light generating system may be part of or may be applied in e.g. office lighting systems, household application systems, shop lighting systems, home lighting systems, accent lighting systems, spot lighting systems, theater lighting systems, fiber-optics application systems, projection systems, self-lit display systems, pixelated display systems, segmented display systems, warning sign systems, medical lighting application systems, indicator sign systems, decorative lighting systems, portable systems, automotive applications, (outdoor) road lighting systems, urban lighting systems, green house lighting systems, horticulture lighting, digital projection, or LCD backlighting. The light generating system (or luminaire) may be part of or may be applied in e.g. optical communication systems or disinfection systems.

[0083] BRIEF DESCRIPTION OF THE DRAWINGS

[0084] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:

[0085] Fig. 1 schematically depicts embodiments of a laser bank 1300 and optics 500.

[0086] Fig. 2 schematically depicts embodiments of a light generating system 1000.

[0087] Fig. 3 schematically depicts further embodiments of the laser bank 1300 and optics 500.

[0088] Figs. 4A-D schematically depicts further embodiments of a light generating system 1000.

[0089] Fig. 5 schematically depicts other embodiments of the light generating system 1000.

[0090] Fig. 6 schematically depicts embodiments of the light generating system 1000 focusing on the path of light through various elements.

[0091] Figs. 7 and 8A-C schematically depict some (explanatory) embodiments.

[0092] Figs. 9A-B schematically depict embodiments of the array 2000 on the laser bank 1300 and the luminescent material 200.

[0093] Figs. 10A-B schematically depict use of the light generating system 1000 in a lighting device 1200 or a vehicle 3000.

[0094] The schematic drawings are not necessarily to scale.

[0095] DETAILED DESCRIPTION OF THE EMBODIMENTS

[0096] Fig. 1-9 schematically depict (aspects ol) embodiments of the light generating system 1000. In embodiments, the invention provides a light generating system 1000 comprising a laser bank 1300, a luminescent material 200, optics 500, and a control system 300. The laser bank 1300 may comprise (a) a first subset 1310 comprising nl first solid state lasers 10 configured to generate first laser light 11, (b) a second subset 1320 comprising n2 second solid state lasers 20 configured to generate second laser light 21, and (c) a third subset 1330 comprising n3 third solid state lasers 30 configured to generate third laser light 31. In embodiments, the following may apply: nl>2, n2>2, and n3>2. Further, the laser bank 1300 may comprise a 2D array 2000 comprising the nl first solid state lasers 10, the n2 second solid state lasers 20, and the n3 third solid state lasers 30. Furthermore, the array 2000 may comprise a plurality of positions 2005 with a subset of positions 2005 configured in a sub array 2004 configured centrally in the array 2000. The array 2000 comprises a plurality of positions 2005. Here, schematically 16 positions 2005 are depicted.

[0097] Additionally, the laser bank 1300 may be configured in thermal contact with a first thermally conductive body 610 or may comprise such thermally conductive body 610. In embodiments, the luminescent material 200 may be configured to convert at least part of the first laser light 11 received by the luminescent material 200 into first luminescent material light 201’, at least part of the second laser light 21 received by the luminescent material 200 into second luminescent material light 201”, and at least part of the third laser light 31 received by the luminescent material 200 into third luminescent material light 201”’. Additionally, the luminescent material 200 may be configured in thermal contact with a second thermally conductive body 620. In embodiments, the laser bank 1300, the luminescent material 200, and the optics 500 may be configured to generate (i) a first beam of first light 1011 comprising at least part of the luminescent material light 201’, (ii) a second beam of second light 1021 comprising at least part of the luminescent material light 201”, and (iii) a third beam of third light 1031 comprising at least part of the luminescent material light 201’”. Especially, the first beam of first light 1011 may have a first optical axis 01, the second beam of second light 1021 may have a second optical axis 02, and the third beam of third light 1031 may have a third optical axis 03. Further, the first optical axis 01, the second optical axis 02, and the third optical axis 03 may be configured mutually diverging. Additionally, each of the first light 1011, the second light 1021, and the third light 1031 may be white light having a correlated color temperature of at least 2000 K and a color rendering index of at least 70. In embodiments, the light generating system 1000 may be configured to generate one or more of the first light 1011, the second light 1021, and the third light 1031. Especially, the control system 300 may be configured to control the first subset 1310, the second subset 1320, and the third subset 1330 (individually).

[0098] Fig. 1 schematically depicts embodiments of a laser bank 1300 and optics 500. Herein, a series of positions of second solid state lasers 20 surround positions of first solid state lasers 10 and third solid state lasers 30. This embodiment is depicted with rows of lasers 10,20,30 arranged in rows. Rows A and B in the sub array 2004 and rows Ml and M2 in the peripheral area of the array 2000 of the laser bank 1300 may be addressed separately. Using such a laser-bank 1300 in combination with optics 500, it may be possible to generate four laser spots as depicted. Fig. 2 schematically depicts embodiments of a light generating system 1000 using the laser bank 1300 depicted in Fig. 1. Herein, the first optical axis 01 and the second optical axis 02 may have a first mutual angle al, the third optical axis 03 and the second optical axis 02 may have a second mutual angle a2, the first optical axis 01 and the third optical axis 03 may have a third mutual angle al. In embodiments, the following may apply: 0.9< (al+a2) / a3<l.l. Furthermore, the first mutual angle al and the second mutual angle a2 may be selected from the range of 2-15°.

[0099] Especially, the first beam of first light 1011 may further comprise at least part of the first laser light 11. Further, the second beam of second light 1021 may further comprise at least part of the second laser light 21. Furthermore, the third beam of third light 1031 may further comprise at least part of the third laser light 31.

[0100] Moreover, the laser bank 1300, the luminescent material 200, and the optics 500 may be configured to generate (i) the first beam of first light 1011 comprising at least part of the first laser light 11 and at least part of the luminescent material light 201 generated by part of the first laser light 11, (ii) the second beam of second light 1021 comprising at least part of the second laser light 21 and at least part of the luminescent material light 201 generated by part of the second laser light 21, and (iii) the third beam of third light 1031 comprising at least part of the third laser light 31 and at least part of the luminescent material light 201 generated by part of the third laser light 31.

[0101] In embodiments, the optics 500 may comprise a polarizing beam splitter 525 and a dichroic beam splitter 515. Especially, at least part of the laser light 11,21,31 may comprise linear polarized light. As depicted the dichroic beam splitter 515 may be configured to reflect at least part of the laser light 11,21,31 and to transmit at least part of the luminescent material light 201, or may be configured to transmit at least part of the laser light 11,21,31 and to reflect at least part of the luminescent material light 201. Additionally, the polarizing beam splitter 525 may be configured to reflect at least part of light comprising a first linear polarization and to transmit at least part of light comprising a second linear polarization, different from the first linear polarization, or may be configured to transmit at least part of light comprising the first linear polarization and to reflect at least part of light comprising the second linear polarization. Furthermore, the polarizing beam splitter 525 and the dichroic beam splitter 515 may be configured downstream of the laser bank 1300 and upstream of the luminescent material 200. Further, the optics 500 may comprise a polarization changing element 810, configured downstream of the polarizing beam splitter 525 and upstream of the luminescent material 200.

[0102] As depicted in Fig. 2, four laser spot laser spots may be imaged onto the luminescent material 200. Luminescent material light 201 in combination with beams of light 1011,1021,1031 may produce 3 beams of white light. The second laser light 21 may be combined with luminescent material light 201 to produce the second beam of second light 1021, the first laser light 11 may be used to generate the first beam of first light 1011 (to be used when to turn left) and the third laser light 31 may be used to generate the third beam of third light 1031 (to be used when to turn left).

[0103] Fig. 2 schematically depicts an embodiment wherein downstream optics may be used to create three different beams of light 1011,1021,1031. By controlling the laser light sources 10,20,30 in the laser bank 1300, the different beams of light 1011,1021,1031 (in three different directions) may be created.

[0104] Fig. 3 schematically depicts further embodiments of the laser bank 1300 and optics 500 depicted in Fig. 1. In embodiments, at least a part of the total number of n2 second solid state lasers 20 may not be configured in the sub array 2004. Especially, the optics 500 may comprise a plurality of specular mirrors 540, with a specular mirror 540 configured downstream of each solid state laser 10,20,30 (configured to direct the laser light 11,21,31 in at least three respective directions).

[0105] Thereby, in a laser bank 1300 using series (as depicted in Fig. 1) and specular mirrors 540 may focus the 4 depicted beams of light (Ml, A, B, M2) on optics 500 and provide three laser spots on a luminescent material (the luminescent material is not depicted). The spots on the luminescent material are schematically indicated with (again) Ml, M2 and A and B. As can be derived from Fig. 3, there is a kind of “mismatch” between the positions of the solid state lasers 10,20,30 in the laser bank 1300 and the positions of the spots A, Ml, M2, B of their laser light on the luminescent material. Whereas the first solid state lasers 10 and the third solid state lasers 30 are configured centrally, they generate non-central spots A,B; the second solid state lasers 20 are configured peripherally, but they generate central spots Ml, M2. This can be achieved with optics 500 configured downstream of the laser bank 1300 and upstream of the luminescent material.

[0106] Figs. 4A-4D schematically depicts a further embodiment of a light generating system 1000. Especially, the light generating system 1000 as depicted in Fig. 2 may be combined with a laser bank 1300 and specular mirrors 540. In contrast to Fig. 3, the optics 500, more especially the specular mirrors 540, are configured such that first solid state lasers 10 and the third solid state lasers 30 are configured centrally, but also essentially generate non-central beams 1011,1031 (A,B); the second solid state lasers 20 are configured peripherally, but they generate central spots Ml, M2.

[0107] Hence, as depicted in Fig. 4, four laser spot laser spots are imaged onto the luminescent material 200. Luminescent material light 201 in combination with beams of light 1011,1021,1031 may produce 3 beams of white light. The second laser light 21 may be combined with luminescent material light 201 to produce the second beam of second light 1021, the first laser light 11 may be used to generate the first beam of first light 1011 (to be used when to turn left) and the third laser light 31 may be used to generate the third beam of third light 1031 (to be used when to turn right). Fig. 4A schematically depict all beams 1011,1021,1031, and Figs. 4B-4D schematically how the different beams 1011,1021,1031 can be generated.

[0108] Of course, the principle of Fig. 3 could be applied to the embodiment schematically depicted in Fig. 4. Then, the central beam indicated with reference 1021 in Fig. 4 could be generated by the sold state lasers configured peripheral (in the embodiment Fig. 4, schematically the two outer laser light sources, there indicated with references 10,30, are configured peripherally), and the side beams indicated with references 1011,1031 in Fig. 4 could be generated by the sold state lasers configured centrally (in the embodiment Fig. 4, schematically the two central laser light sources, there indicated with references 20, are configured centrally).

[0109] Fig. 5 schematically depicts other embodiments of the light generating system 1000. Especially, the light generating system 1000 may herein be a color-controllable light generating system 1000. The laser bank 1300 may be used to generate color temperature controllable white beam using the first subset 1310 for a left beam comprising first light 1011 and the third subset 1330 for producing a right beam comprising third light 1031. The second subset 1320 may be used for generating the color temperature controllable main beam comprising second light 1021. Using the first subset 1310 and the third subset 1330 yellow light 1011,1031 may be generated. Using the second subset 1320 blue light 1021 may be generated.

[0110] Fig. 6 schematically depicts embodiments of the light generating system 1000 focusing on the path of light through various elements.

[0111] Especially, the laser bank 1300, the luminescent material 200, and the optics 500 may be configured such that when during operation of the light generating system 1000, a radiant flux of the second laser light 21 may be lower at a central area 204 of the luminescent material 200 than at a peripheral area 207 of the luminescent material 200.

[0112] In embodiment (I), the luminescent material 200 may be configured to convert at least part of the first laser light 11, at least part of the second laser light 21, and at least part of the third laser light 31 received by the luminescent material 200 at spatially different positions into first luminescent material light 201’, second luminescent material light 201”, and third luminescent material light 201’”. Here, upstream optics, configured upstream of the luminescent material 200, may be used to direct the laser light 11,21,23 into different directions. These optics 500, are here schematically depicted as lenses. However, other optics may also be possible (see elsewhere herein). Optics 500 downstream of the luminescent material 200 may optionally further be applied to beam shape and / or direct the luminescent material light 201 and the laser light 11,21,23 into three different beams 1011,1021,1031, respectively.

[0113] In embodiment (II), the luminescent material 200 may be configured to convert at least part of the first laser light 11, at least part of the second laser light 21, and at least part of the third laser light 31 received by the luminescent material 200 at spatially different positions into luminescent material light 201.

[0114] Here, downstream optics, configured downstream of the luminescent material 200, may be used to direct the laser light 11,21,23 into different directions. These optics 500, are here (also) schematically depicted as lenses. However, other optics may also be possible (see elsewhere herein). Optics 500 upstream of the luminescent material 200 may optionally further be applied to beam shape (and / or direct) the luminescent material light 201 and the laser light 11,21,23 (into three different beams 1011,1021,1031), respectively.

[0115] Fig. 7 schematically depicts different embodiments of the light generating system 1000. The optics 500 directly downstream of the solid state lasers 10,20,30 may e.g. comprise collimators. Further downstream thereof, but still downstream of the solid state lasers 10,20,30 and upstream of the luminescent material 200, further optics, here thus upstream optics, also indicated with reference 500, may be to direct the laser light 11,21,31 to different portions of the luminescent material 200. Further optics 500 may be available downstream of the luminescent material 200, but these optics are herein not schematically depicted.

[0116] Embodiment I schematically depicts a reference embodiment. In such reference embodiment, the light generating system 1000 does not comprise optics 500 for redirecting the laser light 11,21,31, neither upstream of the luminescent material 200 nor downstream thereof, into three different beams which may have a kind of mismatch between the position of the solid state lasers 10,20,30 and / or the partitions of the luminescent material 200 that are irradiated. Therefore, the second lasers 20 are configured adjacent to each other on the laser bank 1300. Hence, the heat management of the light generating system 1000 may be less efficient when only the main beam (M1+M2) provided by the second lasers 20 is turned on during operation.

[0117] Herein, embodiment II is an alternative embodiment, and embodiments III, IV, and V essentially depict modes of embodiment II. Here, the light generating system 1000 does comprise optics 500 for redirecting the laser light 11,21,31. Therefore, the second lasers 20 may be configured peripherally on the laser bank 1300, especially in a peripheral area 2007 of the laser bank 1300 (see also Fig. . Hence, the heat management of the light generating system 1000, especially of the solid state lasers 20, may be improved. Embodiment III schematically depicts the mode wherein only the main beam (M1+M2) provided by the second lasers 20 is turned on during operation.. Embodiment IV schematically depicts the mode wherein only the left beam provided by the first lasers 10 is turned on during operation. Embodiment V schematically depicts the mode wherein only the right beam provided by the third lasers 30 is turned on during operation.

[0118] Fig. 8A-C schematically depict embodiments of a light generating system 1000 comprising different optics 500. Here, schematically embodiments are depicted with downstream optics 500, configured downstream of the luminescent material 200 (not depicted). For each of the embodiments, from the left side beams comprising laser light and luminescent material light propagates to the - depicted - optics 500. In all three embodiments, laser light and luminescent material light approaching more peripherally of a central beam comprising laser light and luminescent material light, is redirected to form a central beam (Ml, M2), whereas laser light and luminescent material light approaching more centrally, is redirected to form side beams (A,B).

[0119] Fig. 8A schematically depicts embodiments of a light generating system 1000 comprising wedge-shaped refractive structures 513 configured in a light receiving relationship with the first lasers 10 and third lasers 30 (not depicted) and (partitions ol) the luminescent material 200 (not depicted). As depicted, the wedge-shaped refractive structures 513 may especially comprise glass prisms. Thereby, the wedge-shaped refractive structures 513 may re-direct the received light into a first beam of first light 1011 and a third beam of third light 1031. A lens 512 may be configured ((further) downstream) to provide the beams (A, M1+M2, B), and may especially redirect at least part of the light received into the second beam 1021.

[0120] Fig. 8B schematically depicts embodiments of a light generating system 1000 comprising wedge-shaped refractive structures 513 configured in a light receiving relationship with the first lasers 10 and third lasers 30 (not depicted) and (partitions of) the luminescent material 200 (not depicted). As depicted, the wedge-shaped refractive structures 513 may comprise a plurality of wedge-shaped refractive structures 513, e.g. facing each other. Thereby, the wedge-shaped refractive structures 513 may re-direct the received light into a first beam of first light 1011 and a third beam of third light 1031 and a second beam of second light 1021. A plurality of lens 512 may be configured further downstream to further beam shape and / or redirect the beams (A, Ml, M2, B).

[0121] Fig. 8C schematically depicts embodiments of a light generating system 1000 comprising optical grating structures 514 configured in a light receiving relationship with the first lasers 10 and third lasers 30 (not depicted) and (partitions ol) the luminescent material 200 (not depicted). Thereby, the optical grating structures 514 may re-direct the received light into a first beam of first light 1011 and a third beam of third light 1031. A lens 512 may be configured ((further) downstream) to provide the beams (A, M1+M2, B), and may especially redirect at least part of the light received into the second beam 1021.

[0122] Fig. 9A schematically depicts embodiments of the array 2000 on the laser bank 1300. In embodiment (I), the subsets 1310,1320,1330 are patterned in series. In embodiment (II) and (III), positions of first solid state lasers 10, second solid state lasers 20, and 10 and third solid state lasers 30 may be configured in a checkerboard-like pattern. In embodiment (IV), none of the total number of n2 second solid state lasers 20 may be configured in the sub array 2004. In embodiment (V), a series of positions of second solid state lasers 20 surround positions of first solid state lasers 10 and third solid state lasers 30. The array 2000 comprises a plurality of positions 2005. Here, schematically 16 positions 2005 are depicted.

[0123] Fig. 9B schematically depicts embodiments of the luminescent material 200. Especially, the laser bank 1300, the luminescent material 200, and the optics 500 may be configured such that when during operation of the light generating system 1000, a radiant flux of the second laser light 21 may be lower at a central area 204 of the luminescent material 200 than at a peripheral area 207 of the luminescent material 200. Especially, the peripheral area 2007 of the array 2000, see e.g. Fig. 9A, may comprise an outer laser-bank region. Fig. 10A depicts use of the light generating system 1000 in a lighting device 1200 selected from the group of a lamp 1, a luminaire 2, a projector device 3, a disinfection device, a photochemical reactor, and an optical wireless communication device.

[0124] Fig. 10B schematically depicts use of the light generating system 1000 in a vehicle 3000 comprising the light generating system 1000 according to any one of the preceding claims as adaptive front lighting system (AFS).

[0125] In embodiments (not depicted herein), the optics 500 may comprise a lens array 510 comprising a plurality of lenses 515, with a lens 515 configured downstream of each solid state laser 10,20,30 (configured to direct the laser light 11,21,31 in the three respective directions).

[0126] In further embodiments (not depicted herein), the optics 500 may comprise wedge-shaped refractive structures 516, with a wedge-shaped refractive structure 516 configured downstream of each solid state laser 10,20,30 (configured to direct the laser light 11,21,31 in the three respective directions).

[0127] In other embodiments (not depicted herein), the light generating system 1000 may further comprise a diffuser arrangement 400. Especially, the diffuser arrangement 400 may be configured to convert at least part of the first laser light 11 received by the diffuser element 400 into first diffused light 401’, at least part of the second laser light 21 received by the diffuser element 400 into second diffused light 401”, and at least part of the third laser light 31 received by the diffuser arrangement 400 into third diffused light 401’”. Further, the luminescent material 200 may be configured in the reflective mode. Additionally, the diffuser arrangement 400 may be configured in the reflective mode.

[0128] Hence, amongst others, the invention herein proposes an adaptive front lighting system using an advanced pixelated laser-bank configured for pixelated pumping of a phosphor. The laser-bank may comprise a plurality of lasers arranged in a matrix. In embodiments, the matrix may comprise a plurality of lasers in a central laser-bank region and a plurality of lasers in an outer laser-bank region at least partly surrounding said plurality of lasers in said central laser-bank region. The phosphor may comprise a central phosphor region and an outer phosphor region at least partly surrounding the central phosphor region. Especially, in embodiments the plurality of lasers in the central laser-bank region may (essentially only) be used to pump the phosphor in the outer phosphor region, while the plurality of lasers in said outer laser-bank region may (essentially only) be used to pump said phosphor in the central phosphor region. Note that the terms “central laser-bank region” and “outer laser-bank region”, and similar terms, may essentially only refer to different parts of the laser bank, with the solid state lasers in these region being essentially the same (i.e. essentially all having essentially the same peak wavelengths and / or the same centroid wavelengths). However, as the solid state lasers in an outer laser-bank region may better be cooled, there may be small differences between peak wavelengths (or centroid wavelengths) of the solid state lasers in the central laser-bank region and in the outer laser-bank region. The peak wavelengths (or centroid wavelengths), however may essentially all be within a range of about 20 nm, or even within a range of about 15 nm, such as within a range of about 10 nm (like between 450 and 460 nm).

[0129] Further, note that the terms “central phosphor region” and “outer phosphor region”, and similar terms, may essentially only refer to different parts of a layer of luminescent material having an essentially homogeneous distribution of the luminescent material. In other words, luminescent material light only originating from the central phosphor region and luminescent material light only originating from the outer phosphor region may essentially have the same spectral power distributions and / or the same centroid wavelengths.

[0130] However, as the luminescent material in the outer phosphor region may better be cooled than in a central phosphor region, there may be small differences between spectral power distributions (or centroid wavelengths) of the luminescent material in the outer phosphor region and the inner phosphor region. The centroid wavelengths, however may essentially all be within a range of 30 nm, or even within a range of about 20 nm, such as within a range of about 15 nm (like between 570 and 585 nm), or even within a range of about 10 nm.

[0131] The term “plurality” refers to two or more. The terms “substantially” or “essentially” herein, and similar terms, will be understood by the person skilled in the art. The terms “substantially” or “essentially” may also include embodiments with “entirely”, “completely”, “all”, etc. Hence, in embodiments the adjective substantially or essentially may also be removed. Where applicable, the term “substantially” or the term “essentially” may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term “comprise” also includes embodiments wherein the term “comprises” means “consists of’. The term “and / or” especially relates to one or more of the items mentioned before and after “and / or”. For instance, a phrase “item 1 and / or item 2” and similar phrases may relate to one or more of item 1 and item 2. The term "comprising" may in an embodiment refer to "consisting of but may in another embodiment also refer to "containing at least the defined species and optionally one or more other species". Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise”, “comprising”, and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to”. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0132] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0133] The devices, apparatus, or systems may herein amongst others be described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation, or devices, apparatus, or systems in operation.

[0134] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.

[0135] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

[0136] The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a device claim, or an apparatus claim, or a system claim, enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. In yet a further aspect, the invention (thus) provides a software product, which, when running on a computer is capable of bringing about (one or more embodiments ol) the method as described herein.

[0137] The invention also provides a control system that may control the device, apparatus, or system, or that may execute the herein described method or process. Yet further, the invention also provides a computer program product, when running on a computer which is functionally coupled to or comprised by the device, apparatus, or system, controls one or more controllable elements of such device, apparatus, or system.

[0138] The invention further applies to a device, apparatus, or system comprising one or more of the characterizing features described in the description and / or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterizing features described in the description and / or shown in the attached drawings.

[0139] The various aspects discussed in this patent can be combined in order to provide additional advantages. Further, the person skilled in the art will understand that embodiments can be combined, and that also more than two embodiments can be combined. Furthermore, some of the features can form the basis for one or more divisional applications.

Claims

CLAIMS:

1. A light generating system (1000) comprising a laser bank (1300), a luminescent material (200), optics (500), and a control system (300); wherein: the laser bank (1300) comprises (a) a first subset (1310) comprising nl first solid state lasers (10) configured to generate first laser light (11), (b) a second subset (1320) comprising n2 second solid state lasers (20) configured to generate second laser light (21), and (c) a third subset (1330) comprising n3 third solid state lasers (30) configured to generate third laser light (31); wherein nl>2, n2>2, and n3>2; wherein the laser bank (1300) comprises a 2D array (2000) comprising the nl first solid state lasers (10), the n2 second solid state lasers (20), and the n3 third solid state lasers (30); wherein the array (2000) comprises a plurality of positions (2005) with a subset of np positions (2005) configured in a sub array (2004) configured centrally in the array (2000), wherein np=n2; wherein at least a part of the total number of n2 second solid state lasers (20) is not configured in the sub array (2004); wherein the laser bank (1300) is configured in thermal contact with a first thermally conductive body (610) or comprises such first thermally conductive body (610); at least a subset of the second solid state lasers (20) is configured peripherally in the array (2000) and at least partially surrounding the sub array (2004); the luminescent material (200) is configured to convert at least part of the first laser light (11) received by the luminescent material (200) into first luminescent material light (201 ’), at least part of the second laser light (21) received by the luminescent material (200) into second luminescent material light (201”), and at least part of the third laser light (31) received by the luminescent material (200) into third luminescent material light (201”’); wherein the luminescent material (200) is configured in thermal contact with a second thermally conductive body (620); the optics (500) is configured downstream of the laser bank (1300) and upstream of the luminescent material (200), wherein the optics (500) comprise one or more of (i) a lens array, (ii) an array of specular mirrors and (iii) an array of refractive elements; the laser bank (1300), the luminescent material (200), and the optics (500) are configured to generate (i) a first beam of first light (1011) comprising at least part of the first luminescent material light (201 ’), wherein the first beam of first light (1011) has a firstoptical axis (01), (ii) a second beam of second light (1021) comprising at least part of the second luminescent material light (201”), wherein the second beam of second light (1021) has a second optical axis (02), and (iii) a third beam of third light (1031) comprising at least part of the third luminescent material light (201”’), wherein the third beam of third light (1031) has a third optical axis (03); wherein the first optical axis (01), the second optical axis (02), and the third optical axis (03) are configured mutually diverging; wherein each of the first light (1011), the second light (1021), and the third light (1031) is white light having a correlated color temperature of at least 2000 K and a color rendering index of at least 70; and the light generating system (1000) is configured to generate one or more of the first light (1011), the second light (1021), and the third light (1031); and the control system (300) is configured to control the first subset (1310), the second subset (1320), and the third subset (1330).

2. The light generating system (1000) according to claim 1, wherein (i) the first optical axis (01) and the second optical axis (02) have a first mutual angle (al), (ii) the third optical axis (03) and the second optical axis (02) have a second mutual angle (a2), and (iii) the first optical axis (01) and the third optical axis (03) have a third mutual angle (a3); and wherein 0.9< (al+a2) / a3<l.l.

3. The light generating system (1000) according to claim 2, wherein the first mutual angle (al) and the second mutual angle (a2) are selected from the range of 2-15°.

4. The light generating system (1000) according to any one of the preceding claims, wherein the first beam of first light (1011) comprises at least part of the first laser light (11), wherein the second beam of second light (1021) comprises at least part of the second laser light (21), and wherein the third beam of third light (1031) comprises at least part of the third laser light (31).

5. The light generating system (1000) according to any one of the preceding claims, wherein the optics (500) comprise a lens array (510) comprising a plurality of lenses (512), with a lens (512) configured downstream of each solid state laser (10,20,30).

6. The light generating system (1000) according to any one of the preceding claims, wherein the optics (500) comprise a plurality of specular mirrors (540), with a specular mirror (540) configured downstream of each solid state laser (10,20,30).

7. The light generating system (1000) according to any one of the preceding claims, wherein the laser bank (1300), the luminescent material (200), and the optics (500) are configured such that when during operation of the light generating system (1000) the second beam of second light (1021) is generated, a radiant flux of the second laser light (21) is higher at a central area (204) of the luminescent material (200) than at a peripheral area (207).

8. The light generating system (1000) according to any one of the preceding claims, wherein the light generating system (1000) further comprises a diffuser arrangement (400); wherein the diffuser arrangement (400) is configured to convert at least part of the first laser light (11) received by the diffuser element (400) into first diffused light (401’), at least part of the second laser light (21) received by the diffuser element (400) into second diffused light (401”), and at least part of the third laser light (31) received by the diffuser arrangement (400) into third diffused light (401’”); wherein the luminescent material (200) is configured in the reflective mode, and wherein the diffuser arrangement (400) is configured in the reflective mode.

9. The light generating system (1000) according to any one of the preceding claims, wherein the laser bank (1300), the luminescent material (200), and the optics (500) are configured to generate (i) the first beam of first light (1011) comprising at least part of the first laser light (11) and at least part of the first luminescent material light (201’) generated by part of the first laser light (11), (ii) the second beam of second light (1021) comprising at least part of the second laser light (21) and at least part of the second luminescent material light (201 ”) generated by part of the second laser light (21), and (iii) the third beam of third light (1031) comprising at least part of the third laser light (31) and at least part of the third luminescent material light (201’”) generated by part of the third laser light (31).

10. The light generating system (1000) according to any one of the preceding claims, wherein the optics (500) comprise a polarizing beam splitter (525) and a dichroic beam splitter (515), wherein at least part of the laser light (11,21,31) comprises linearpolarized light, wherein (i) the dichroic beam splitter (515) is configured to reflect at least part of the laser light (11,21,31) and to transmit at least part of the luminescent material light (201), or is configured to transmit at least part of the laser light (11,21,31) and to reflect at least part of the luminescent material light (201), (ii) the polarizing beam splitter (525) is configured to reflect at least part of light comprising a first linear polarization and to transmit at least part of light comprising a second linear polarization, different from the first linear polarization, or is configured to transmit at least part of light comprising the first linear polarization and to reflect at least part of light comprising the second linear polarization; and wherein the polarizing beam splitter (525) and the dichroic beam splitter (515) are configured downstream of the laser bank (1300), wherein the polarizing beam splitter (525) is configured upstream of the luminescent material (200), and wherein the dichroic beam splitter (515) is configured downstream of the luminescent material (200).

11. The light generating system (1000) according to claim 10, wherein the optics (500) comprise a polarization changing element (810), configured downstream of the polarizing beam splitter (525) and upstream of the luminescent material (200).

12. The light generating system (1000) according to any one of the preceding claims 1-11, wherein a series of positions of second solid state lasers (20) surround positions of first solid state lasers (10) and third solid state lasers (30).

13. The light generating system (1000) according to any one of the preceding claims 1-11, wherein positions of first solid state lasers (10), second solid state lasers (20), and (10) and third solid state lasers (30), are configured in a checkerboard-like pattern.

14. The light generating system (1000) according to any one of the preceding claims 1-11, wherein none of the total number of n2 second solid state lasers (20) is configured in the sub array (2004).

15. A vehicle (3000) comprising the light generating system (1000) according to any one of the preceding claims as adaptive front lighting system.

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