DE102015224880A1 - Headlamp for lighting - Google Patents

Abstract

The present invention relates to a headlight for illumination, comprising a pump radiation source (1) for emitting pump radiation and a phosphor element (6) spaced therefrom for at least partial conversion of the pump radiation into a conversion light, wherein a radiation beam (2) with the pump radiation onto an irradiation surface (5) of the phosphor element (6) which, in response to this excitation, emits on a radiating surface (7) a beam (8) with an illuminating light which at least partially contains the conversion light, and wherein one of the radiation beams (2, 8) is a liquid crystal modulator (4) interspersed for beam forming.

Description

Technical area

The present invention relates to a headlamp with a pump radiation source for emitting pump radiation and a phosphor element arranged at a distance therefrom for the at least partial conversion of the pump radiation into a conversion light.

State of the art

With the combination of a pump radiation source of high power density, for example, a UV radiation or blue light emitting laser, and a spaced-apart thereto arranged phosphor element can be realized light sources high luminance. The phosphor element at least partially converts the pump radiation, thus emitting a conversion light in response to the excitation. This can then form the illumination light on its own or as a mixture with an unconverted part of the pump radiation.

Presentation of the invention

The present invention is based on the technical problem of specifying a particularly advantageous headlight with pump radiation source and phosphor element.

According to the invention, this object is achieved by a headlight for illumination, which comprises: a pump radiation source for emitting pump radiation; a phosphor element arranged at a distance from the pump radiation source for the at least partial conversion of the pump radiation into a conversion light; a liquid crystal modulator having a plurality of segments whose transmittance is adjustable in each case, wherein a beam with the pump radiation falls on a Einstrahlfläche the phosphor element which emits to this excitation out at a radiating surface a beam with an illumination light which at least partially contains the conversion light, and wherein one of the beams passes through the liquid crystal modulator for beam shaping.

Preferred embodiments are to be found in the dependent claims and the entire disclosure, wherein the presentation does not always distinguish in detail between device and method or use aspects; In any case, implicitly, the disclosure must be read with regard to all categories of claims.

The headlight according to the invention has a liquid crystal modulator for beam shaping, which is arranged either upstream of the phosphor element for adapting the radiation beam to the pump radiation (pump radiation beam) or downstream for adapting the radiation beam to the illumination light (illumination light beam). Depending on the arrangement, there are different advantages, see below in detail. A general advantage of the penetrated by the corresponding beam, so operated in transmission liquid crystal modulator is, for example, the thus possible, compact overall design. Thus, the liquid crystal modulator can be arranged relatively close to the phosphor element, even without a separate optics in between; If, on the other hand, a reflective area light modulator, such as a micromirror array, were provided, the optical paths would be longer in themselves and an optical system would also be required in order, for example, to guide as much of the divergently emitted illumination light over the reflective area light modulator.

The "liquid crystal modulator" corresponds in structure to a liquid crystal display (LCD), also referred to as an LCD display. It is made up of a plurality of segments, for example at least 100, 500, 1,000, 5,000, 10,000 or 30,000 segments and (independently thereof) not more than 1 × 10 ⁸ , 1 × 10 ⁷ or 1 × 10 ⁶ segments (each in the order of naming increasingly preferred), constructed, wherein the transmittance of the segments is in each case adjustable, for example. Digitally between "transmissive" and "blocking" or even multi-stage or continuously. Despite this seperate adjustability, several segments can be combined in terms of circuitry. The segments are preferably arranged in matrix form in a regular grid. Due to the high pixel density which can be achieved with an LCD panel or display, for example in currently commercially available LCD displays of up to 550 dpi (dots per inch), a high irradiation spot density can be achieved on the phosphor element. Thus, a Nutzlicht radiation pattern can be achieved with high spatial resolution.

A basic principle of liquid crystal displays is that the liquid crystals affect the polarization direction of light and their orientation per segment can be influenced by an applied electrical voltage. For technical implementation, there are then in detail different possibilities, whereby the commercially available LCD designs can be used. As a rule, an exit surface of the liquid-crystal modulator forms a polarizer, which then allows the light or the radiation to pass or block just as a function of the polarization direction set with the liquid crystals.

The liquid crystal modulator is operated in transmission, an entrance surface, at which the respective beam enters the liquid crystal modulator, thus lies opposite an exit surface at which it then emerges again. Operation in transmission is also preferred for the phosphor element, that is to say that the irradiation and the emission surface are preferably opposite to one another.

As already mentioned, a laser is preferably provided as a pumping radiation source which, for example, emits UV radiation or preferably blue light as pumping radiation. "Laser" can be read both on a single laser source as well as on an arrangement with multiple laser sources, as the laser source, a laser diode is preferred. In the case of a plurality of laser sources, these can generally also differ in their dominant wavelength, this is preferably the same for all laser sources, particularly preferably the laser sources are identical.

The conversion is preferably a down-conversion, so the conversion light is longer wavelength than the pump radiation; the conversion light has at least a predominant share in the visible spectral range, preferably it is overall in the visible. In the case of a full conversion, the conversion light alone forms the illumination light, in the preferred case of a partial conversion it proportionally forms the illumination light together with an unconverted part of the pump radiation. The illumination light is preferably white light.

In a preferred embodiment, which concerns just the variant "upstream arrangement", the pump radiation beam passes through the liquid crystal modulator before it hits the phosphor element. An advantage of this arrangement may, for example, be that the pumping radiation is preferably already polarized, that is to say emitted in polarized form, which can help prevent possible losses of efficiency due to a polarization that otherwise precedes the liquid-crystal modulator (cf. 2a , b with accompanying description for illustration).

In a preferred embodiment, the headlamp is then set up so that the pump radiation beam falls immovably on the entrance surface of the liquid crystal modulator, whereby different excitation patterns can be generated on the irradiation surface of the phosphor element by adjusting the transmittance of the segments. By generating an excitation pattern on the irradiation surface, the illuminating light at the emission surface is then also emitted with a corresponding pattern, preferably with an optic (see below in detail) illuminating light emitted at different points of the emission surface being directed in different spatial directions.

As a result, with different excitation patterns different solid angle ranges can be supplied with illumination light, or just not. An example of a preferred field of application are motor vehicle headlights, wherein, for example, illumination light is emitted in a first operating state "high beam" on the entire radiating surface, for which purpose the entire radiating surface is irradiated with pump radiation, ie all segments of the liquid crystal modulator are switched transmissively. In a second operating state "dipped beam" can then be switched off the illumination light output for a portion of the radiating surface by blocking respective segments of the liquid crystal modulator are switched off, which then only a low beam is supplied with illumination light.

As far as a "set up" of the headlamp is generally mentioned, this means, for example, that the pump radiation / illumination light propagates correspondingly during operation of the headlamp and / or the liquid crystal modulator is correspondingly connected. So far as it goes to the beam guide, the individual components are then so arranged relative to each other, that spread the beam accordingly. For the operation of the liquid crystal modulator, the headlight usually has a control unit which controls the wiring of the segments (transmissive / blocking).

In a preferred embodiment, which also relates to the "upstream arrangement", a reflective, adjustable deflecting means is arranged in the path of the pump radiation between the liquid crystal modulator and the phosphor element. This may be, for example, a micromirror array (digital mirror device, DMD), a reflective liquid crystal modulator (LCoS) or a microscanner mirror (scanning mirror). The deflection element is used to generate the actual excitation pattern on the irradiation surface of the phosphor element, for example by moving the pump radiation beam with a microscope scanner mirror as deflection means over the irradiation surface.

The liquid crystal modulator upstream of the deflecting means, in conjunction with the microscanner mirror, on the one hand can switch the pump radiation beam bundle on and off as a function of the respective position on the irradiation surface, so that the excitation pattern then results in the course of the scanning movement. On the other hand, the Liquid crystal modulator, for example, also take over the function of an adaptive diaphragm, that is, differentially delimit the pump radiation beam, for example, as a function of a respective operating state of the deflection means.

In a preferred embodiment, which in turn relates to the "upstream arrangement", the pump radiation beam is moved over the entrance surface of the liquid crystal modulator and its circuitry synchronized at least temporarily with this movement. The pump radiation beam is thus, for example, scanned over the entrance surface moves, with a transmission window in which the segments are connected transmissively moves (outside the transmission window, the segments are blocking). The transmission window is preferably somewhat smaller than a spot generated by the pump radiation beam on the entrance surface, so functionally, this arrangement corresponds to a certain extent to a diaphragm moving along with the spot.

Such a moving diaphragm can, for example, be advantageous insofar as the spot as a rule has no sharply delimited edge, but the intensity drops with a certain course, for example with a Gauss or Lorentz-shaped profile. Illuminated light side, this can figuratively speaking show in a "washed-out" light-dark transition and, for example, have a delivery of illumination light in spatial directions result, which should actually no longer be supplied (see the example "low beam"). The inventors have found that the effect of such "blurring" in a moving pump radiation beam can in particular come to fruition because, in particular, the human eye or human perception integrates over time the radiation of useful light from adjacent illumination spots of the phosphor element Thus, the Gauss or Lorentz-shaped foothills of the moving Nutzlichtabstrahlungsprofile of adjacent illumination points of the phosphor element perceives as a blurred spot and thus as blurring.

The mitbewegte transmission window preferably has a by at least 5%, more preferably at least 10%, smaller average extent than the spot on the entrance surface, with possible upper limits, for example, at most 40% or 30%. The "average extent" is taken in each case as the mean value of the smallest and largest extension over the entry surface and, in the preferred case of a circular geometry, corresponds to the circle diameter.

In a preferred embodiment of the moving over the entrance surface of the liquid crystal modulator pump radiation beam this is the liquid crystal modulator preceded by a microscanner mirror. this is tiltable between different mirror positions, and the pump radiation beam can be moved with this tilting over the entrance surface, for example. Line or matrix-shaped. The mirror surface of the microscanner mirror is tilted as a whole.

So far, the variant "upstream arrangement" was discussed with priority, in which the pump radiation beam passes through the liquid crystal modulator; In the following, the focus will be on the "downstream arrangement". In general, the headlight can also have a plurality of liquid crystal modulators, that is, one can be arranged in front of the phosphor element and another downstream; Preferably, the headlight has exactly one liquid crystal modulator. As an alternative to the transmissive liquid crystal modulator, the inventors have also, as already mentioned, reflected on reflective surface light modulators, for example a DMD or an LCoS. Although these reflective surface light modulators are not the subject of the present invention, corresponding structures with a pump radiation source, a phosphor element spaced apart therefrom and a reflective surface light modulator should nevertheless be expressly disclosed.

In a preferred embodiment, the liquid crystal modulator is disposed downstream of the phosphor element and passes through it the illumination light beam.

In a preferred embodiment, the pump radiation beam thereby falls ortunveränderlich on the Einstrahlfläche of the phosphor element and is accordingly also issued the illumination light beam bundle ortsunveränderlich to the emitting surface of the phosphor element. During operation, the entrance surface of the liquid-crystal modulator is supplied with illuminating light over a large area, and different emission patterns are then produced on the exit surface of the liquid-crystal modulator via the setting (the transmittance) of the segments. As described above for the emission surface of the phosphor element, in this case the spatial distribution on the exit surface of the liquid crystal modulator can then be converted into a solid angle distribution (only the spatial distribution on the exit surface of the liquid crystal modulator instead of that on the emission surface of the phosphor element). As far as a "stationary" incident / emitted beam is mentioned, this means that the respective spot on the respective area in operation is immobile (not moved) and also has a constant size.

In another preferred embodiment of the liquid crystal modulator downstream of the phosphor element, the pump radiation beam (the spot) is moved over the irradiation surface of the phosphor element, and accordingly the illumination light beam (the emission spot) moves over the emission surface. The adjustment of the transmittance of the segments is thereby at least temporarily synchronized with the movement of the illumination light beam, so again a transmission window / aperture is moved along with it (in this case with the illumination light beam, above with the pump radiation beam). , Reference is made to the advantages and preferred aspect ratios given above for the co-moving transmission window.

In the arrangement of the liquid crystal modulator downstream of the phosphor element, an advantage in general (also in the case of static construction) can be that a comparatively large part of the divergently emitted illumination light is "picked up" with a liquid crystal modulator arranged as close as possible to the phosphor element without a separate optic therebetween. can be. Thus, a more efficient, but also compact and cost-effective design is possible. In the case of the liquid crystal modulator downstream of the phosphor element, it is generally preferred that the illumination light beam bundle of optionally a polarizer arranged therebetween (see below) passes directly from the emission surface of the phosphor element to the entrance surface of the liquid crystal modulator, ie no optics interspersed therebetween; "Direct" means in this respect of possibly a polarizer and possibly the transition into a surrounding gas medium (usually air) refraction and reflection-free.

In a preferred embodiment of the liquid crystal modulator downstream of the phosphor element, the pump radiation beam is guided with a microscanner mirror tiltable between different mirror positions to the irradiation surface of the phosphor element and moved over it (see also the above disclosure on "microscanner mirror"). In general, however, a DMD or LCoS could also be provided for moving the pump radiation beam.

As already mentioned, an optic for converting the spatial into a spatial angle distribution is provided in a preferred embodiment, which is assigned in the case of the upstream liquid crystal modulator of the emitting surface of the phosphor element and in the downstream arrangement of the exit surface of the liquid crystal modulator. In the latter case, the illumination light emitted from a respective segment is then directed into a respective solid angle range. If the optics are assigned to the emission surface of the phosphor element, light emitted at different points thereof is directed into different spatial directions; In this case, the modulation made in advance of the phosphor element (movement of the pump radiation beam and / or modulation with the liquid crystal modulator) determines at which points of the emission surface illumination light is emitted and which spatial directions are correspondingly supplied.

In a preferred embodiment, the optics and the respective surface (radiating surface or exit surface) are arranged on one side telecentric to each other, that is, the illuminating light emanating from the different locations of the respective surface is collimated by itself (ie per location). The "optics" can generally be reflective (in particular via total reflection) and / or refractive, preferably it is refractive, particularly preferably constructed from a plurality of individual lenses (spherical or aspherical).

In a preferred embodiment, which relates in particular to the downstream liquid crystal modulator, the radiation beam (preferably the illumination light beam) passes through a polarizer upstream of the liquid crystal modulator. This is then preferably arranged between the emission surface of the phosphor element and the entrance surface of the liquid crystal modulator. With two polarization filters twisted by 90 ° to each other, which is part of the liquid crystal modulator (see above), the respective locked segments can be completely blanked out. In general, such an arrangement is not mandatory, namely, a certain residual transmission in the case of blocking ("gray area") may be of interest. If the liquid crystal modulator is penetrated by the pump radiation beam, preferably no separate polarizer is provided upstream of the liquid crystal modulator because the pump radiation is usually emitted in polarized form anyway. Generally, "polarizer" as used herein means a linear polarizer, with a wire-grid polarizer being preferred. A wire-grid polarizer can also be embedded or integrated in the irradiation and / or emission surface of the phosphor element.

In general, the phosphor element and the pump radiation source are arranged in a preferred embodiment, stationary and rotationally fixed relative to each other, so they are not moved relative to each other.

The invention also relates to the use of a presently disclosed headlamp for lighting, in particular for motor vehicle Lighting, in particular in a motor vehicle headlight, in particular in an automobile headlight. In this case, adaptive illumination may in particular also be preferred in which a solid-angle area that is accessible to the entire headlight is only partially illuminated depending on the situation. A comparatively simple application may be the change between high beam and low beam described above.

As can be seen from the above disclosure, more complex, matrix-shaped emission patterns can also be generated with the structure according to the invention, these spatial distributions then corresponding to solid angle distributions. By adapting the spatial distribution, that is to say switching off the emission from certain areas, it is possible, for example, selectively to exclude an oncoming and / or preceding vehicle. This can take place, for example, as a function of recordings of the illumination area recorded with a camera which, for example, can be mounted in the interior mirror or its suspension. Each partial area of the illumination area can be assigned a solid angle range and therefore just, for example, a segment of the liquid crystal modulator.

Brief description of the drawings

In the following, the invention will be explained in more detail with reference to embodiments, wherein the individual features in the context of the independent claims in another combination may be essential to the invention and continue to distinguish not in detail between the claim categories.

In detail shows

1 a first inventive headlamp in a schematic representation with pump radiation source and phosphor element, wherein the phosphor element is preceded by a liquid crystal modulator;

2a , b the operation of a liquid crystal modulator in a schematic representation;

3 a second headlamp according to the invention in a schematic representation, wherein between the pump radiation source and the liquid crystal modulator additionally a microscanner mirror is arranged;

4 a third headlamp according to the invention with a liquid crystal modulator downstream of the phosphor element, wherein a microscanner mirror is arranged upstream of the phosphor element;

5 a fourth headlamp according to the invention, wherein the liquid crystal modulator of the embodiment according to 4 is disposed downstream of the phosphor element, however, the pump radiation falls stationary on the phosphor element.

Preferred embodiment of the invention

1 shows a first headlamp according to the invention in a schematic view from the side or in section. A laser diode as pump radiation source 1 emits a beam of radiation 2 with pump radiation, namely blue laser light. The pump radiation beam 2 comes with a primary look 3 collimates and passes through a liquid crystal modulator 4 before putting it on a radiating surface 5 a phosphor element 6 (in the present case cerium-doped yttrium-aluminum garnet, YAG: Ce) falls. The phosphor element 6 emits a conversion light in response to this excitation, wherein not the entire pump radiation is converted in the phosphor element (partial conversion).

The result is at one of the Einstrahlfläche 5 opposite radiating surface 7 a ray of light 8th emitted with illumination light (shown are two of different locations of the radiating surface 7 emitted, each for themselves collimated partial beam), which contains proportionally unconverted pump radiation and conversion light. The illumination light is white light. The phosphor element 6 is usually at the Einstrahlfläche 5 provided with a dichroic layer (not shown), which is transmissive to the pump radiation, so that the pump radiation in the phosphor element 6 arrives; however, for the yellow conversion light, for example, the dichroic layer is reflective, which increases the efficiency of the emission for lighting application.

With the liquid crystal modulator 4 can the pump radiation beam 2 that is on the irradiation surface 5 meets, be adapted in its scope or its form. In the in 1 As shown, the segments are in a lower half of the liquid crystal modulator 4 locked, this transmits so only in an upper half and passes accordingly the pump radiation beam 2 only in this upper half on the Einstrahlfläche 5 , Consequently, then only in the upper half of the radiating surface 7 Emitted illumination light, the emission from the lower half is thus switched off.

This situation may, for example, correspond to a "dipped-beam" operating state, whereas a whole "transmissive liquid-crystal modulator and, accordingly, a full-area excitation / emission would correspond to a" high-beam "operating state. One of the radiating surface 7 assigned optics 9 sets the local distribution on the radiating surface 7 in a solid angle distribution, so that leads at different points of the radiating surface 7 emitted light in each case collimated in different spatial directions (one-sided telecentric arrangement).

The 2a , b illustrate the operation of the liquid crystal modulator 4 in a schematic representation. The liquid crystal modulator 4 is divided into one unit 4a with the liquid crystals, which influence the polarization of the light passing through them and whose orientation can be changed by an externally applied electrical voltage ( 2 B ), and a downstream polarizing filter 4b , On the liquid crystal unit 4a meets polarized light. In the case of the embodiment according to the 1 and 3 the pump radiation is already polarized per se, in the embodiments according to the 4 and 5 becomes the liquid crystal modulator 4 upstream of a polarizing filter 20 arranged.

Is in the case of 2a no external voltage is applied to the liquid crystal unit, the liquid crystals rotate the plane of oscillation of the light at the passage of exactly 90 ° (the thickness of the liquid crystal is chosen accordingly), so that the light then fits exactly on the polarizing filter 4b meets and goes through. The liquid crystal modulator 4 is therefore switched transmissive. By applying an external voltage ( 2 B ) align the liquid crystal molecules parallel to the applied electric field and turn the polarization direction of the light no longer. Accordingly, the polarization filter blocks 4b the incident light, the liquid crystal modulator 4 is disabled. In the schematic diagrams, a cell is shown, in fact, the liquid crystal modulator 4 from a plurality of such cells whose transmittance can be adjusted accordingly by applying a voltage accordingly.

In the second embodiment according to 3 is unlike that according to 1 first the primary optics 3 designed to be downstream of a pump radiation beam 2 spreads with a smaller cross-section. This pump radiation beam 2 then does not apply directly to the liquid crystal modulator 4 but is about a microscanner level 30 guided, so about a two mutually perpendicular axes (one of which is inclined) between different mirror positions tiltable mirror.

Depending on the mirror position falls the pump radiation beam 2 the microscanner mirror 30 then downstream to a different location of an entrance area 31 of the liquid crystal modulator 4 , Dashed lines indicated in the schematic representation, the deflection for the two maximum tilt positions of the same axis. With the tilt of the micro scanner mirror 30 can the pump radiation beam 2 line by line over the entrance area 31 of the liquid crystal modulator 4 moved, while a line from line to line are offset, so that there is a matrix-shaped scan pattern. By now the pump radiation source 1 depending on the respective angular position of the microscanner mirror 30 is switched on or off, a two-dimensional excitation pattern can be generated.

This is in the embodiment according to 3 not directly on the irradiation surface 5 of the phosphor element 6 applied, but just first on the entrance surface 31 of the liquid crystal modulator 4 , This then becomes one with the spot, which is the pump radiation beam 2 on the entrance area 31 generated, transmigrating transmission window generated, so to speak so with the spot mitbewegende aperture. Their diameter is slightly smaller than that of the spot, so that the result is a sharply limited excitation area on the irradiation surface 5 of the phosphor element 6 is produced. The excitation pattern on the irradiation surface 5 of the phosphor element 6 again corresponds to an emission pattern on the radiating surface 7 , which with a (in 3 not shown) optics is converted into a solid angle distribution.

In the embodiment according to 4 corresponds to the structure of pump radiation source 1 , Primary optics 3 and microscanner levels 30 according to that 3 , In contrast, the moving pump radiation beam becomes 2 However, directly on the Einstrahlfläche 5 of the phosphor element 6 guided, so it is directly on the Einstrahlfläche 5 generates an excitation pattern. The liquid crystal modulator 4 is in this case the phosphor element 6 arranged downstream, so is from the at the radiating surface 7 of the phosphor element 6 passed through illumination light. With the liquid crystal modulator 4 But then again with the spot on the radiating surface 7 from which illumination light is emitted, generates co-moving transmission window. This in turn forms a diaphragm, the contour of the illumination light beam is sharply defined.

With the optics 9 in this case, the on the exit surface 40 of the liquid crystal modulator 4 converted spatial distribution into an angular distribution, the illumination light beam is not shown for clarity (but in principle that according to 1 corresponds). As that at the radiating surface 7 of the phosphor element 6 emitted illumination light, in contrast to the pump radiation is not already linearly polarized per se, is in the embodiment according to 4 additionally the polarizer 20 the liquid crystal modulator 4 arranged upstream, ie between phosphor element 6 and liquid crystal modulator 4 , see. also the 2a , b.

In the embodiment according to 5 corresponds to the arrangement of pump radiation source 1 and primary optics 3 that according to 1 , is therefore the primary optics 3 downstream of a collimated pump radiation beam 2 with a comparatively large cross section. However, this does not apply to the liquid crystal modulator 4 but directly on the irradiation surface 5 of the phosphor element 6 , Accordingly, large area is at the opposite radiating surface 7 Illuminated light emitted. This first enforces the polarizer 20 and then correspondingly linearly polarized to the liquid crystal modulator 4 , By a corresponding Transmissiv- / Sperrend circuit of the individual segments of the liquid crystal modulator 4 is on its exit surface 40 generates an emission pattern, which in turn is then converted into a solid angle distribution (eg dipped and high beam or even more complex, see the introduction to the description).

LIST OF REFERENCE NUMBERS

1

Pump radiation source

2

Pump radiation beam bundle

3

 primary optics

4

 liquid crystal modulator

4a

 Liquid crystal unit with liquid crystals

4b

 Subordinated polarization filter

5

 irradiation surface

 6

Fluorescent element

7

 radiating

8th

 Illumination light beam bundle

9

 optics

20

 polarizer

30

 Micro Mirror

31

 entry surface

40

 exit area

Claims (15)

Headlamp for illumination, comprising: - a pumping radiation source ( 1 ) for the emission of pump radiation; - one to the pump radiation source ( 1 ) spaced apart fluorescent element ( 6 ) for the at least partial conversion of the pump radiation into a conversion light; A liquid crystal modulator ( 4 ) having a plurality of segments whose transmittance is adjustable in each case, wherein a radiation beam ( 2 ) with the pump radiation on a Einstrahlfläche ( 5 ) of the phosphor element ( 6 ), which at this excitation at a radiating surface ( 7 ) a radiation beam ( 8th ) is emitted with an illumination light which at least partially contains the conversion light, and wherein one of the radiation beams ( 2 . 8th ) the liquid crystal modulator ( 4 ) penetrated to the beam forming. A headlamp according to claim 1, wherein the liquid crystal modulator ( 4 ) the phosphor element ( 6 ) is arranged upstream and the pump radiation beam ( 2 ) the liquid crystal modulator ( 4 ) and then on the Einstrahlfläche ( 5 ) of the phosphor element ( 6 ) meets. A headlamp according to claim 2, which is arranged such that the pump radiation beam ( 2 ) immovably on an entrance surface ( 31 ) of the liquid crystal modulator ( 4 ) and that, depending on a setting of the transmittance of the segments, different excitation patterns on the irradiation surface ( 5 ) of the phosphor element ( 6 ) be generated. Headlamp according to claim 2 with a liquid crystal modulator ( 4 ) downstream and the Einstrahlfläche ( 5 ) of the phosphor element ( 6 ) upstream, reflective and adjustable deflection means, wherein the headlight is arranged so that the pump radiation beam ( 2 ) immovably on an entrance surface ( 31 ) of the liquid crystal modulator ( 4 ) and that with the deflection different excitation patterns on the Einstrahlfläche ( 5 ) of the phosphor element ( 6 ) be generated. A headlamp according to claim 2, which is arranged such that the pump radiation beam ( 2 ) over an entrance surface ( 31 ) of the liquid crystal modulator ( 4 In operation, an adjustment of the transmittance of the segments at least temporarily with the movement of the pump radiation beam (FIG. 2 ) is synchronized. A headlamp according to claim 5, in which the pump radiation beam ( 2 ) via a tiltable between different mirror positions microscanner mirror ( 30 ) to the entrance surface ( 31 ) of the liquid crystal modulator ( 4 ) is guided and in response to the mirror positions on this is movable. A headlamp according to claim 1, wherein the liquid crystal modulator ( 4 ) the phosphor element ( 6 ) is arranged downstream and the illumination light beam ( 8th ) the liquid crystal modulator ( 4 ) interspersed. A headlamp according to claim 7, which is arranged such that the pump radiation beam ( 2 ) stationary on the irradiation surface ( 5 ) of the phosphor element ( 6 ), whereby the illumination light beam ( 8th ) according to stationary on the radiating surface ( 7 ) of the phosphor element ( 6 ), depending on a setting of the transmittance of the segments different emission patterns on an exit surface ( 40 ) of the liquid crystal modulator ( 4 ) be generated. Headlamp according to Claim 7, which is set up such that the pump radiation beam over the radiation surface ( 5 ) of the phosphor element ( 6 ) is moved, with which the illumination light beam ( 8th ) according to the radiating surface ( 7 ) of the phosphor element ( 6 In operation, an adjustment of the transmittance of the segments at least temporarily with the movement of the illumination light beam (FIG. 8th ) is synchronized. A headlamp according to claim 9, in which the pump radiation beam ( 2 ) via a tiltable between different mirror positions microscanner mirror ( 30 ) to the Einstrahlfläche ( 5 ) of the phosphor element ( 6 ) is guided and in response to the mirror positions on this is movable. Headlamp according to one of the preceding claims with an optic ( 9 ), which in the case of claims 2 to 6 of the radiating surface ( 7 ) of the phosphor element ( 6 ) and in the case of claims 7 to 10 an exit surface ( 40 ) of the liquid crystal modulator ( 4 ), the optics ( 9 ) of different locations of the respective assigned area ( 7 . 40 ) outgoing illumination light in different directions. Headlamp according to Claim 11, in which the optics ( 9 ) and the respectively assigned area ( 7 . 40 ) are arranged one-sided telecentric to each other, that is, from the different locations of the respective associated surface ( 7 . 40 ) outgoing illumination light are each collimated by itself. Headlamp according to one of the preceding claims, in which the liquid crystal modulator ( 4 ) penetrating beams ( 2 . 8th ) the liquid crystal modulator ( 4 ) upstream a polarizer ( 20 ) interspersed. Headlamp according to one of the preceding claims, in which the phosphor element ( 6 ) relative to the pump radiation source ( 1 ) is arranged stationary and rotationally fixed. Use of a headlamp according to one of the preceding claims for illumination, in particular for motor vehicle lighting, in particular in a motor vehicle headlight, in particular in an automobile headlight.

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