DE102014217714A1 - Irradiation device with optoelectronic radiation unit - Google Patents

Abstract

The present invention relates to an irradiation device (1) having an optoelectronic radiation unit (2) with a plurality of radiation sources, which are arranged on a support (4, 9) in matrix form, a lens plate (3) with a plurality of lenses (5), which like the Radiation sources are arranged in a matrix shape, a first displacement element (6) for positioning the lens plate (3) relative to the radiation unit (2), and a first adjusting screw (31), wherein the first displacement element (6) on the support (4, 9) displaceable guided and by means of the first adjusting screw (31) relative to the carrier (4, 9) and thus the radiation unit (2) is displaceable, in a first displacement direction (21) perpendicular to a main direction (8) of the radiation unit (2) emitted radiation, wherein the lens plate (3) in a displacement of the first displacement element (6) in the first displacement direction (21) of one of the lens plate (3) supplied turned inside (23) of the first displacement element (6) is taken and the lens plate (3) is held against rotation relative to a rotation about the main direction (8) in this entrainment.

Description

Technical area

The present invention relates to an irradiation device comprising an optoelectronic radiation unit having a plurality of radiation sources and a lens plate having a plurality of lenses.

State of the art

The radiation sources may, for example, be laser diodes, which are provided in a plurality arranged as an array. A corresponding radiation unit can then be used, for example, as a pump radiation source, that is to say for example for exciting a phosphor element arranged at a distance from the irradiation device. This can be based on the excitation with the example. Ultraviolet or blue pump radiation z. B. emit visible conversion light, which can then be used for lighting purposes.

The present invention is based on the technical problem of specifying an advantageous irradiation device.

Presentation of the invention

According to the invention, this object is achieved by an irradiation device having an optoelectronic radiation unit for emitting radiation having a main direction, which radiation unit has a plurality of radiation sources which are arranged in matrix form on a support and thus fixed relative to each other in a relative position to a lens plate having a plurality of lenses, such as the Radiation sources arranged in a matrix shape and fixed in their relative position to each other, a first displacement element for positioning the lens plate relative to the radiation unit and thus the plurality of lenses relative to the plurality of radiation sources, and a first adjusting screw, wherein the first displacement element slidably guided on the support and by means of first adjusting screw relative to the carrier and thus the radiation unit is displaceable, in a first displacement direction which is perpendicular to the main direction, wherein the lens plate at a em moving the first displacement element in the first direction of displacement of a lens plate facing the inside of the first displacement element is taken and the lens plate is held against rotation in this entrainment relative to a rotation about the main direction.

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

Each of the radiation sources of which the radiation unit is constructed emits a beam during operation of the irradiation device; Preferably, the radiation sources emit simultaneously and the beams of the lens plate are brought together downstream, for example in order to achieve a high power density when used as a pump radiation source. Alternatively, it is also possible to operate only subsegments or subarrays of the radiation sources arranged in the form of a matrix, or the subsegments can also be operated intermittently. The subsegments can use the same or different radiation sources, in particular laser diodes.

With the lens plate, the beams are adjusted, so for example. Each of the radiation sources divergently emitted beams collimated (lens plate with Kollimationslinsen), so each bundle of radiation is converted into a bundle of parallel beams. Downstream of the irradiation device, the bundles of rays can then be brought together, for example, with a staircase mirror or a telescope.

In the case of the irradiation device according to the invention, an adjustment possibility is now provided with the displaceability in the first displacement direction which can be adjusted via the first adjusting screw, in order to adapt the relative position of the lens plate and radiation unit (perpendicular to the main direction). Thus, for example, the tilting of the beam can be adjusted, for example to the extent that the beam are then, as far as possible, parallel to an optical axis of the irradiation device downstream optical module.

The adjustment option is advantageously an integral part of the irradiation device, so that, for example, manufacturing tolerances can be compensated individually for the specific irradiation device, for example in the course of a final acceptance. Furthermore, for example, during operation, for example, in regular maintenance intervals, readjusted, and it can, for example, also site specific features (average temperature, humidity) are taken into account or compensated.

The lens plate is taken away by the displacement element, that is then displaced together with this during displacement of the displacement element. The sliding element is on the Carrier "slidably guided", so can be moved in this direction in the direction of displacement, but is held in a direction perpendicular thereto and perpendicular to the main direction, preferably in the two to the direction of displacement and the main direction perpendicular (mutually exactly opposite) directions.

Although in the relative arrangement of the radiation unit and the lens plate, there is possibly an absolute optimum, which could only be achieved if the rotation of the two could also be adjusted to each other (around the main direction). The inventor has found, however, that can be achieved by the adaptability perpendicular to the main direction on the one hand, a sufficiently good optimization; On the other hand, the optimization is also somewhat simplified and thus less error prone. For example, the optimization can be integrated into a production process without excessive effort (eg, in the final acceptance, see above) or by a user of the irradiation device who is not specially trained.

The radiation sources are "matrix-shaped" arranged, a vertical projection of the radiation sources in a plane perpendicular to the main direction thus shows an arrangement in rows and / or columns; particularly preferably, the radiation sources are arranged in a common plane perpendicular to the main direction (in columns and / or rows). The rows and / or columns generally do not necessarily have to be regular and / or perpendicular to each other. Preferred is a regular arrangement, next nearest columns or rows thus each have the same distance from each other. Preferably, the columns and rows are perpendicular to each other.

The lenses of the lens plate are arranged in matrix form in the same sense; Preferably, the lenses lie in a common plane perpendicular to the main direction (and are arranged there in rows and / or columns, see the disclosure in the preceding paragraph). Preferably, the arrangement pattern of the lenses is the same as the arrangement pattern of the radiation sources, so they are at least true to scale; most preferably, the arrangement is the same and are the same distances (scale 1: 1).

The lenses of the lens plate preferably each have an optical axis, wherein these optical axes are more preferably parallel to each other. With the displacement of the lens plate relative to the radiation unit can then, for example, the tilting, which have the beams of the lens plate downstream to the optical axes are set, are minimized approximately.

The "lens plate" is preferably a monolithic part, ie a part without material boundaries between different materials or materials of different production history. This should generally not exclude that a coating may be provided at the entrance and / or exit surface of the lens plate, for example for antireflection coating. Preferably, the monolithic lens plate is a molding made in a mold.

Although the lens plate could generally be made of, for example, a plastic material, such as polycarbonate or polymethylmethacrylate, a glass lens plate is preferred.

The "main direction" results as the average value of all the directional vectors along which the radiation unit radiates (immediately downstream of the radiation unit, ie even in front of the lens plate), ie along which the individual radiation sources radiate. In this averaging, each direction vector is weighted with the light intensity associated with it (a direction in which the radiation unit / one of the radiation sources radiates, ie a vector can be described to which a light intensity can be assigned).

Indications such as "on" / "under" refer to the main direction, indications such as "beside" or "laterally" to directions perpendicular thereto. Indications such as "inside" / "outside" start from a center axis which is parallel to the main direction and extends through a center of the radiation unit, which is formed as a centroid of the light emitting surfaces of the radiation sources.

The "carrier" is preferably in several parts and has a radiation unit part, for example a carrier plate on which the radiation sources are arranged; Furthermore, the carrier then has a housing part on which the radiation unit part is mounted, for example. Screwed. The two are preferably fixed in their relative position to each other. On the radiation unit part, that is to say preferably the carrier plate, the radiation sources can be arranged as components which are unhoused themselves (direct chip mounting) or preferably as components which are in each case housed individually. As already mentioned, the radiation sources are preferably laser diodes.

An alternative approach proposed by the inventor to the present concept is to provide the radiation unit part so that it can be displaced relative to the housing part, wherein the relative position of the housing part and the lens plate can be fixed. A disadvantage compared to the present approach can then, for example, in this respect arise, than then the electrical connections and the thermal connection (heat sink) would have to be shifted.

In a preferred embodiment, the sliding element which is generally displaceable on the carrier is displaceably guided in the carrier, that is, a positive fit between the displacement element and the carrier forming the guide lies within the carrier. Preferably, the displacement element is located with an outer side against an inner wall of the carrier, which extends in the direction of displacement, wherein the displacement element can be displaced in the contact position. Preferably, the displacement element with a likewise extending in the first direction of displacement outer wall is flat against the inner wall of the carrier. Preferably, an opposite outer side of the displacement element abuts another, extending in the direction of displacement inner wall of the carrier; these further and the aforementioned inner wall of the carrier are facing each other and preferably parallel to each other.

In a preferred embodiment, the inner side of the displacement element, which carries the lens plate, lies straight against a side surface of the lens plate, and the lens plate is entrained against rotation by the straight abutment. Preferably, the straight system extends perpendicular to the direction of displacement (and perpendicular to the main direction). In general, for example, the plant could also be linear; However, a flat contact between an inner wall of the displacement element facing the lens plate and the side surface of the lens plate is preferred and this contact surface is flat.

An advantage of the straight / planar system may be, for example, that the lens plate along the system, so preferably perpendicular to the direction of displacement, is still movable; It can then be made in this (second) displacement direction an adjustment, see the comments below in detail.

In general, the lens plate has seen in the main direction, ie facing the main direction or along the main direction looking at an underside, preferably a polygonal, more preferably a rectangular, more preferably a square basic shape. In the case of the preferred rectangle / square, the displacement element then preferably carries the lens plate adjacent to one side of the rectangle and at least partially surrounds the two adjacent sides of the rectangle / square, preferably only partially.

This "encompassing" means that out of the two adjacent (perpendicular to the battered side) sides of the rectangle / square outgoing each followed by a side leg of the sliding element; Preferably, the displacement element is seen in the main direction U-shaped. Between the two side legs, the lens plate is held by a driving portion preferably with play, so that they can therefore be moved in a direction perpendicular to the direction of displacement and the main direction between the two side legs; the side legs represent a stop for this additional displacement.

For example, the lens plate movable with "play" between the side legs may be displaceable by at least 1/30 of its width taken in this direction (the mobility / play), that is, the width taken perpendicular to the direction of displacement. Further preferred lower limits are for example at least 1/25, 1/20, 1/15 or 1/10 (in this order increasingly preferred); possible upper limits are, for example, increasingly preferred in this order at most 1/2, 1/3, 1/4 or 1/5, respectively, in the order in which they are mentioned (an upper limit may also be of interest independently of a lower limit, and vice versa).

In a preferred embodiment, the set screw acts on one of the inside of the displacement element (which carries the lens plate) opposite the outside and the sliding element is pushed when tightening the screw. Although in general an engagement of the screw in a thread on the displacement element is conceivable, acting on the outside and the sliding element sliding adjusting screw is preferred. This can be set accordingly in a thread on the carrier, such as a grub screw. The inner side and the "opposite" outer side of the displacement element are arranged on the same side of the lens plate (that is, in the case of a frame encompassing the lens plate, not on opposite sides of the lens plate).

The acting on the outside of the displacement element screw may be advantageous insofar as the sliding element can then be designed as a comparatively simple part. It may be, for example, an injection molded part or a stamped part. However, an acting directly on the outside of the displacement element, applied to the displacement element adjusting screw could cause a local deformation. In a preferred embodiment, therefore, a metal sheet between the screw and the displacement element is arranged, so presses the screw on the plate and the latter then on the sliding element; the sheet spreads the force transmitted to the sliding element.

A corresponding plate is preferably kinked and has, in addition to the Aufspreizbereich (which is then arranged between the adjusting screw and the displacement element) on a perpendicular thereto extending support area. With the support area, the sheet can then be placed for example when assembling the irradiation device on the support or in the case of a second displacement element (see below in detail) are placed on the other sliding element; in the former case, the Aufspreizbereich would then extend from the support area upwards (along the main direction), in the second case against the main direction down.

In a preferred embodiment, the displacement element takes the lens plate not only in the direction of displacement, but also in a direction exactly opposite displacement direction and keeps it the lens plate in each case against rotation. The displacement element takes the lens plate in the direction of displacement with an inner side and in the exactly opposite displacement direction with another inner side, which is opposite to the former. Each of the inner sides is in each case assigned to an outer side of the lens plate (two mutually opposite outer sides). Also in relation to the exactly opposite direction of displacement is a straight, especially flat contact between the sliding element and lens plate is preferred and reference is made to the extent of the above disclosure.

In general, such a displacement element could also be actuated with a single set screw, for example in combination with a counteracting spring.

In a preferred embodiment, however, a further adjusting screw is provided and act the two screws on mutually opposite outer sides of the sliding element. These mutually "opposite" outer sides refer to the displacement element as a whole and are accordingly on different sides of the lens plate, so are each assigned to a different side surface of the lens plate (which side surfaces are opposite to each other). When tightening the one adjusting screw, the sliding element is thus pushed in the one direction of displacement and when tightening the other screw in exactly the opposite direction of displacement. During the adjustment, one adjusting screw can then be loosened slightly and the other can be tightened accordingly, and vice versa, in order to move the lens plate.

In general, a sliding element is also conceivable, which is provided as an integral part and completely encloses the lens plate in the manner of a frame. However, a multi-piece displacement element of a first and a second displacement element part is preferred. The former takes the lens plate in the direction of displacement, the latter in the opposite direction of displacement. Preferably, the Verschiebelementteile are each U-shaped, a sliding element part in addition to the driving portion so two side legs (see the above description).

Together, the two displacement element parts then enclose the lens plate, preferably not completely; in other words, therefore, the two side legs, which are each assigned to the same side of the lens plate, are spaced a distance from one another. When assembling the irradiation device, the sliding element parts can then be loosely seated on the lens plate and abut each other in the adjusted state in a relative position predefined by the lens plate.

In a preferred embodiment, the lens plate is held in the displacement element with respect to the displacement direction (and preferably also the exact opposite displacement direction), but it is still guided perpendicular thereto and the main direction yet slidably, which preferably via a straight / planar contact between the lens plate and the displacement element is achieved, cf. the above description. So particularly preferred is a sliding element of two U-shaped displacement element parts, held between the driving portions of the lens plate, between the side legs, however, it is guided displaceably.

In a preferred embodiment, a second displacement element is provided for displacement in the direction perpendicular to the first displacement direction, second displacement direction, which is arranged offset to the first displacement element with respect to the main direction, ie either below or above. To move the second displacement element, a second adjusting screw is provided, the screw direction is preferably parallel to the second direction of displacement and thus particularly preferably perpendicular to the helical direction of the first screw.

When moving the second displacement element in the second displacement direction, the lens plate is taken from a facing her inside of the second displacement element and it is held against rotation. Apart from the fact that the first and the second displacement direction are perpendicular to one another, the first and the second displacement element preferably have exactly the same function. It should all the above for a / the displacement element as disclosed embodiments preferably also be disclosed with respect to the second displacement element.

In a preferred embodiment, the two displacement elements adjoin one another successively in the main direction, that is to say that one displacement element rests on the other. A displacement element then rests on the support (and is preferably guided in this, see in front), and the other displacement element rests on the former (and is preferably also guided in the support, see the front).

In a preferred embodiment, the first displacement element is made up of several pieces of first and second displacement element part (see above) and is also the second displacement element in the same sense constructed of several pieces of first and second displacement element. Preferably, the displacement element parts are each U-shaped and then more preferably enclose them per shift element, the lens plate together not completely (see the front). So are preferably each sliding element two U-shaped displacement element parts and the sliding element parts of the first displacement element are rotated by 90 ° relative to the displacement element parts of the second displacement element. For each displacement element, the displacement element parts lie at the same height (in relation to the main direction).

A preferred embodiment of the irradiation device with two displacement elements, which are each constructed of two displacement element parts, relates to the configuration of the displacement element parts. These are preferably identical to each other, so they can for example be injection molded in the same mold or punched with the same punch. "Identical" means insofar that the sliding element parts have the same outer shape. Advantageously, then can be constructed from four equal (preferably U-shaped) parts an arrangement with two displacement elements, with which the lens plate in the first and second displacement direction can be moved (and preferably also in each case in exactly opposite direction).

In a preferred embodiment, a pressure spring is provided which presses the lens plate towards the carrier and thus holds in position with respect to the main direction. The pressure spring can contact the lens plate in corner areas. The contact between the pressure spring and lens plate is preferably punctiform in each case, so the pressure spring may be provided, for example, with (a) bead (s). Preferably, a multi-piece pressure spring from the first and second Andruckfederteil, each Andruckfederteil two corner regions of the lens plate contacted, preferably with one bead.

The provision of a pressure spring may be advantageous, for example, insofar as the lens plate may then be held so far that it does not fall out, but on the other hand it still remains slightly mobile, that is, it can still be displaced under the pressure spring. If, during operation of the irradiation device, heating occurs, for example, and deformation of components of the illumination device occurs as a result of the thermal expansion, the pressure spring can advantageously compensate for a certain deformation, that is to say, for example, excessive pressure on the lens plate is prevented.

In a preferred embodiment, a spacer plate is arranged between the carrier and the lens plate, which creates an approximately greater distance between the irradiation unit and the lens plate. As far as an adjustment perpendicular to the main direction is possible with the move, the position of the lens plate can also be adjusted along the main direction by inserting the spacer plate, at least within certain limits. The displacement element is preferably provided with such a minimum extent in relation to the main direction, that it can be operated even with a certain conditional by the spacer plate / spacer plates offset with the screw, so that the screw still acts on the outer wall. In this context, an abovementioned metal sheet between displacement element and set screw can also offer advantages.

In absolute terms, a displacement element may for example have a thickness taken in the main direction of at least 0.8 mm, preferably at least 1 mm, particularly preferably at least 1.1 mm; Possible upper limits may, for example, be at most 3 mm, preferably at most 2 mm, particularly preferably at most 1.5 mm.

The invention also relates to a set of a plurality of irradiation devices, which differ in the distance between the support and the lens plate in the main direction, but otherwise are identical (considered the minimum distance between the lens plate and the carrier, the same at a resting on the support lens plate Is zero). In an irradiation device of the set, the lens plate can thus rest directly on the carrier, and in another, a spacer between the carrier and the lens plate can be provided. The position of the lens plate relative to the irradiation unit can then, for example, depending on the main direction losdeig for a plurality of irradiation devices are adapted so that, for example, a lot-to-lot variation of the adhesive or solder thickness can be compensated.

The invention also relates to the use of a presently disclosed irradiation device for positioning the lens plate relative to the radiation source, at least in relation to the first displacement direction, preferably also in the exactly opposite displacement direction, more preferably also in the two mutually perpendicular, mutually opposite displacement directions. Furthermore, the invention also relates to the use of a presently disclosed irradiation device as a radiation source, in particular as a pump radiation source for irradiating a phosphor element, that is, for example, as part of a lighting device of a projection device or endoscope. A use as a pump radiation source may also be preferred in the field of vehicle lighting, in particular as part of a motor vehicle headlight.

Brief description of the drawings

In the following, the invention will be explained in more detail with reference to an exemplary embodiment, wherein furthermore no distinction is made in detail between the categories of claims and the features in the context of the independent claims in another combination may be essential to the invention.

In detail shows:

1 an irradiation device according to the invention in an exploded view;

2 a schematic representation of the illustration of the displacement of the lens plate in the carrier of an irradiation device according to 1 ;

3 the composite irradiation device according to 1 in a view from diagonally above;

4 the irradiation device according to 3 in a view from diagonally below.

Preferred embodiment of the invention

1 shows an irradiation device according to the invention 1 with a radiation unit 2 and a lens plate 3 , The radiation unit 2 is made up of an array 20 Laser diodes arranged, which are arranged in five rows and four columns. For clarity, the laser diodes are not shown, but is only a support plate 4 shown, to which the laser diodes are soldered.

The arrangement of the laser diodes on the carrier plate are also the lenses 5 the lens plate 3 arranged; they are also arranged in five rows and four columns. The lens plate 3 is a monolithic glass body.

Each laser diode is thus a lens 5 the lens plate 3 associated with a respective lens 5 then a beam divergently emitted by the respective laser diode collimates. The lens plate 3 upstream therefore there are 20 each divergent beam bundles, which the lens plate 3 are then collapsed separately. With the lenses 5 So these are collimating lenses.

Now to the relative arrangement of lens plate 3 and radiation unit 2 to optimize, has the irradiation device according to the invention 1 a first displacement element 6 and a second displacement element 7 on. With the two sliding elements 6 . 7 can change the position of the lens plate 3 relative to the radiation unit 2 in directions perpendicular to a main direction 8th be adjusted. 2 illustrates this schematically.

The first sliding element 6 is made of two U-shaped sliding element parts 6a , b, wherein the first displacement element part 6a the lens plate 3 in a first direction of displacement 21a entrains and the second displacement element part 6b the lens plate 3 in exactly the opposite direction of displacement 21b entraining. To take the lens plate 3 is the first displacement element part 6a with one of the lens plate 3 facing inner wall surface 23a flat plan on an outer wall surface 24a the lens plate 3 at. At the opposite outer wall surface 24b the lens plate 3 is the second displacement element part 6b flat plan with an inner wall surface 23b on, in both directions 21a , b is the lens plate 3 thus held against rotation.

The sliding element parts 6a , b are in a housing part 9 (see. 1 for illustration) in the two displacement statements 21a , b slidably guided. These are the two displacement element parts 6a , b each with two opposite outer walls 25 each at one of two opposite inner walls 26 of the housing part 9 on, in each case flat and plan. The planar system thus extends in each case in the displacement directions 21a , b. The first sliding element 6 So it's in the first one 21a and the exact opposite direction of displacement 21b slidably guided.

The second displacement element 7 is like the first sliding element 6 from two displacement element parts 7a , b, the first Shifting element part 7a the lens plate 3 in the second direction of displacement 22a entrains and the second displacement element part 7b (the second sliding element 7 ) the lens plate 3 in exactly the opposite direction of displacement 22b entraining. The second displacement element 7 is opposite to the first displacement element 6 rotated by 90 °, by the way, the structure is the same. It is therefore also the second displacement element 7 in the manner just described in the housing part 9 slidably guided (just in the displacement directions 22a , b) and becomes the lens plate 3 each taken with a flat system against rotation.

To move the sliding elements 6 . 7 are each two screws 31a , b (for the first displacement element 6 ) and 32a , b (for the second displacement element 7 ), cf. 1 , By tightening, ie screwing in, the first set screw 31a becomes the first displacement element 6 in the first direction of displacement 21a pushed and takes it while the lens plate 3 With. By tightening the adjusting screw 31b becomes the first displacement element 6 in the first 21a exactly opposite direction of displacement 21b pushed. Similarly, the second displacement element 7 by tightening the second set screw 32a in the second direction of displacement 22a be pushed and by tightening the screw 32b in exactly the opposite direction of displacement 22b ,

The adjusting screws 31a , b, 32a , b act per sliding element 6 . 7 on two with respect to the respective displacement directions 21a , b, 22a , b opposite outer sides 35 . 36 , see. also 2 for illustration.

Here are the screws 31a , b, 32a , not on the sliding elements 6 . 7 itself, but is between each shift element 6 . 7 and adjusting screw 31a , b, 32a , b an angle sheet 37a , b, 38a , b arranged. The angle plates 37a , b, 38a , b spread each of the respective screw 31a , b, 32a , b on the respective displacement element 6 . 7 transmitted force and prevent so that the respective screw 31a , b, 32a , b in the outside 35a , b, 36a , b of the sliding element 6 . 7 digs.

Each of the angle plates 37a , b, 38a , b is divided into a Aufspreizbereich where the respective screw 31a , b, 32a , B, and a vertically extending support area, with which the respective angle plate 37a , b, 38a , b lies or rests. The lower angle plates 38a , b are the second, upper displacement element 7 assigned and lie with their support areas on the housing part 9 on. The upper angle plates 37a , b are the lower, first displacement element 6 assigned and lie with their support areas on the upper displacement element 7 on. At the upper angle plates 37a , b has the spread area down, while the bottom up.

3 illustrates the irradiation device 1 in the assembled state, in a view from above obliquely. When assembling, first the lower angle plates 38a , B in the recess in the housing part 9 inserted, if necessary together with a spacer 39 (see. 1 for illustration). With the spacer 39 can be the distance of the lens plate 3 to the radiation unit 2 in relation to the main direction 8th to be adjusted, the lens plate 3 is thus at inserted spacer 39 on this up; Otherwise, this is not an adjustment in this direction 8th required, lies the lens plate 3 without spacers 39 directly on the housing part 9 on, in the recess for the sliding elements 6 . 7 ,

After insertion of the first sliding element 6 , the second displacement element 7 and the lens plate 3 become the angle plates 37a , b on the second displacement element 7 hung up. Subsequently, two spring elements 40 to the housing part 9 attached and screwed with it.

The two spring elements 40 are each with two beads 41 provided, which in each case at one of the four corners of the rectangular lens plate 3 abut, so that they are contrary to the main direction 8th is pressed. Before adjusting the lens plate 3 with the sliding elements 6 . 7 can the spring elements 40 the lens plate 3 already hold so far that it does not fall out, but on the other hand, just a move is still possible. Subsequently, for the spring elements 40 fully tightened screws.

4 shows the irradiation device 1 in an oblique view from below, so carrier plate 4 and housing part 9 in a rear view. The carrier plate 4 sits in a passage opening of the housing part 9 and is with four screws 51 attached to it. In the figure up and down, three pins each extend 52 the radiation unit 2 , the side of the carrier plate 4 led out.

The upper and lower pins 52 are each with a printed circuit board 53 soldered, which at their respective the pins 52 opposite end with a plug element 54 is provided. About the connector elements 54 can the irradiation device 1 then electrically contacted as part of a lighting device. In operation, a beam is then emitted from each of the laser diodes, each of which is from a lens 5 the lens plate 3 is collimated.

With one of the irradiation device 1 downstream optics, such as a staircase mirror, the beams are then superimposed and fed to a phosphor element. This emits on the excitation with the pump radiation towards longer wavelength conversion light of high luminance; preferred applications are projection devices, automotive headlamps, medical irradiation devices and effect lighting devices. The radiation beams of the radiation sources can be polarized, as is usually the case with laser diodes. The polarization directions of the radiation sources arranged in the form of a matrix can be oriented in the same direction or, alternatively, partial segments of the matrix-shaped laser diode arrangement can have different polarization orientations.

The radiation sources can emit the same or different wavelengths.

The lenses of the lens plate may be suitably provided with anti-reflection coatings. The lenses may be the same or different in their diffractive properties, e.g. For example, all the lenses of one row or one column may be the same, but the lenses of other rows or columns may be the same, or alternatively the inner lenses may be made different than the outer lenses. Instead of lenses and holographic structures can be used.

The radiation sources, in particular laser diodes, can be operated with constant or variable power as well as in continuous wave mode and / or in a clocked switching mode.

Claims (17)

Irradiation device ( 1 ) with an optoelectronic radiation unit ( 2 ) for the emission of radiation having a main direction ( 8th ), which radiation unit ( 2 ) has a plurality of radiation sources mounted on a support ( 4 . 9 ) are arranged in a matrix and are thus fixed in their relative position to each other, a lens plate ( 3 ) with a plurality of lenses ( 5 ), which, like the radiation sources, are arranged in the form of a matrix and fixed in their relative position to one another, a first displacement element ( 6 ) for positioning the lens plate ( 3 ) relative to the radiation unit ( 2 ) and thus the plurality of lenses ( 5 ) relative to the plurality of radiation sources, and a first set screw ( 31 ), wherein the first displacement element ( 6 ) on the carrier ( 4 . 9 ) slidably guided and by means of the first set screw ( 31 ) relative to the carrier ( 4 . 9 ) and thus the radiation unit ( 2 ) is displaceable, in a first direction of displacement ( 21 ) perpendicular to the main direction ( 8th ), wherein the lens plate ( 3 ) during a displacement of the first displacement element ( 6 ) in the first direction of displacement ( 21 ) of one of the lens plate ( 3 ) facing inside ( 23 ) of the first displacement element ( 6 ) and the lens plate ( 3 ) in this entrainment with respect to a rotation about the main direction ( 8th ) is held against rotation. Irradiation device ( 1 ) according to claim 1, wherein the first displacement element ( 6 ) in the carrier ( 4 . 9 ) is guided displaceably, wherein the guide is preferably an outer side ( 25 ) of the first displacement element ( 6 ) at a in the first direction of displacement ( 21 ) extending inner wall ( 26 ) of the carrier. Irradiation device ( 1 ) according to claim 1 or 2, wherein the inside ( 23 ) of the first displacement element ( 6 ) when driving on a side surface ( 24 ) of the lens plate ( 3 ) straight and the lens plate ( 3 ) so that it rests against rotation, the system is preferably flat and flat. Irradiation device ( 1 ) according to one of the preceding claims, in which the lens plate ( 3 ) in the main direction ( 8th ) has a rectangular basic shape, wherein the first displacement element ( 6 ) the lens plate ( 3 ) When moving on one side of the rectangle entraining and preferably at least partially surrounds the two sides of the rectangle perpendicular thereto. Irradiation device ( 1 ) according to one of the preceding claims, in which the first adjusting screw ( 31 ) on one of the inside ( 23 ) of the first displacement element ( 6 ) opposite outside ( 35 ) of the first displacement element ( 6 ) and the first displacement element ( 6 ) when tightening the first set screw ( 31 ) is pushed. Irradiation device ( 1 ) according to claim 5, in which the first displacement element ( 6 ) is a stamped part or injection molded part and between the first displacement element ( 6 ) and the first set screw ( 31 ) a sheet ( 37 ) is arranged to one of the first set screw ( 31 ) on the first displacement element ( 6 ) aufzuspreizen transmitted power. Irradiation device ( 1 ) according to one of the preceding claims, in which the first displacement element ( 6 ) the lens plate ( 3 ) in the first direction of displacement ( 21a ) and an exactly opposite direction of displacement ( 21b ), wherein in each case the lens plate ( 3 ) relative to the rotation about the main direction ( 8th ) is held against rotation. Irradiation device ( 1 ) according to claim 7 in conjunction with claim 5 or 6, with a further adjusting screw ( 31b ), the first set screw ( 31a ) and the further adjusting screw ( 31b ) on opposite outer sides ( 35a , b) the first displacement element ( 6 ), so that the first displacement element ( 6 ) when tightening the first set screw ( 31a ) in the first direction of displacement ( 21a ) is pushed and when tightening the other screw ( 31b ) in the exactly opposite direction of displacement ( 21b ) is pushed. Irradiation device ( 1 ) according to claim 7 or 8, wherein the first displacement element ( 6 ) from a first displacement element part ( 6a ), which the lens plate ( 3 ) in the first direction of displacement ( 21a ) entrains, and to a multi-piece second displacement element part ( 6b ), which the lens plate ( 3 ) in the exactly opposite direction of displacement ( 21b ), is built up. Irradiation device ( 1 ) according to one of the preceding claims, in which the lens plate ( 3 ) in the first displacement element ( 6 ) with respect to the first direction of displacement ( 21 ), the lens plate ( 3 ) in the first displacement element ( 6 ) but in a second direction of displacement ( 22 ) perpendicular to the main direction ( 8th ) and the first shift direction ( 21 ), is slidably guided. Irradiation device ( 1 ) according to claim 10 with a second displacement element ( 7 ) and a second set screw ( 32 ), which second displacement element ( 7 ) in the main direction ( 8th ) to the first displacement element ( 6 ), wherein the second displacement element ( 7 ) with the second set screw ( 32 ) in the second direction of displacement ( 22 ) is displaceable and the lens plate ( 3 ) during a displacement of the second displacement element ( 7 ) in the second direction of displacement ( 22 ) of one of the lens plate ( 3 ) facing the inside of the second displacement element ( 7 ) is taken along and is held against rotation. Irradiation device ( 1 ) according to claim 11, in which the first displacement element ( 6 ) and the second displacement element ( 7 ) in the main direction ( 8th ) adjoin one another consecutively, that is, one displacement element ( 6 . 7 ) on the other displacement element ( 6 . 7 ) rests. Irradiation device ( 1 ) according to claim 11 or 12 in conjunction with claim 9, in which the second displacement element ( 7 ) from a first displacement element part ( 7a ), which the lens plate ( 3 ) in the second direction of displacement ( 22a ) entrains, and to a multi-piece second displacement element part ( 7b ), which the lens plate ( 3 ) in an exactly opposite direction of displacement ( 22b ), is constructed, these two displacement element parts ( 7a , b) the second displacement element ( 7 ) are identical to each other, the two displacement element parts ( 6a , b) the first displacement element ( 6 ) are identical to each other and also the sliding element parts ( 6a , b) the first displacement element ( 6 ) to the sliding element parts ( 7a , b) the second displacement element ( 7 ) are identical. Irradiation device ( 1 ) according to one of the preceding claims with a pressure spring ( 40 ), which the lens plate ( 3 ) in an annex to the carrier ( 4 . 9 ) and holds in position with respect to the main direction. Irradiation device ( 1 ) according to one of the preceding claims with a spacer plate ( 39 ) between the lens plate ( 3 ) and the carrier ( 4 . 9 ) is arranged. Set of several irradiation devices ( 1 ) according to one or more of the preceding claims, in particular according to claim 15, which irradiation devices ( 1 ) with regard to one in the main direction ( 8th ) distance between carriers ( 4 . 9 ) and lens plate ( 3 ), but otherwise are identical. Use of an irradiation device ( 1 ) according to one of claims 1 to 15 for positioning the lens plate ( 3 ) relative to the radiation unit ( 2 ) and / or as a radiation source, in particular for irradiating a phosphor element.

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