DE102016224341A1 - Headlamp and headlamp module for a headlamp - Google Patents

Abstract

A headlight generating assembly includes an LED assembly having a support (111) and a plurality of at least 20 LEDs (112) disposed on a front side of the support (111) that are configured to be powered by a power source wherein the LEDs (112) comprise LEDs (1121, 1122, 1123, 1124) of N different LED types, where N is greater than or equal to three and a plurality of each LED type is provided; a plurality of power lines (1111, 1112, 1113) laid in the carrier (111) are provided for powering the LEDs (112), the power lines including power lines of N different power line types configured to supply the different types of LEDs to lead different streams to each other; and the LEDs (112) are arranged according to a regular grid on the front side of the carrier (111), whereafter each raster web (4) of the regular grid comprises a maximum number of different LED types, which result from an optimization rule for a highest LED Packing density on the front of the carrier (111) results.

Description

TECHNICAL AREA

The present invention relates to embodiments of a headlamp for illuminating a film, studio, stage, event and / or theater environment. More particularly, the present invention relates to a light-generating package having a particular LED array and to a light-generating package having a particular primary lens array.

BACKGROUND

For the lighting of a film, studio, stage, event and / or theater environment usually headlamps are used. It is sometimes desirable for a headlamp comprising a light source assembly to provide sufficient luminous efficacy and meet other requirements common to a film, studio, stage, event and / or theater environment. Such requirements include, for example, a continuous operation over several hours, a wide adjustment range of a scattering angle, a homogeneous, soft leaking light field, and / or in a so-called Flood setting a hard light source and in a so-called. Spot setting a soft light source.

Instead of conventional light sources, such as light bulbs or gas discharge lamps, increasingly light-generating assemblies are used with an LED array. In this case, a plurality of LEDs can be arranged on a carrier, and the light produced by these LEDs can be optically processed to provide a headlamp with certain properties.

Usually, it is desirable to build a very compact, color-adjustable light source. This sometimes requires LEDs to be placed close together. However, a high packing density may require a complex implementation of a power supply since each LED must be connected to a power line. The high temperatures that may be due to the power loss may require the use of good heat conducting substrates, but this can lead to restrictions regarding the design and installation of power lines. Packing density, cooling and a good color mixture thus sometimes work against each other.

The object of the present invention is to propose a light-generating assembly in which the above-mentioned target properties are adequately satisfied.

DESCRIPTION

According to one embodiment, a light-emitting assembly for a headlamp for illuminating a film, studio, stage, event and / or theater environment comprises an LED arrangement having a support and a plurality of at least 20 LEDs arranged on a front side of the support adapted to be powered by a power source having electrical power, the LEDs comprising LEDs of N different types of LEDs, where N is greater than or equal to three and a plurality of each type of LED is provided; a plurality of power lines laid in the carrier for powering the LEDs is provided, wherein the power lines comprise power lines of N different types of power lines, which are designed to supply different currents to each other to supply the different types of LEDs; and the LEDs are arranged according to a regular grid on the front side of the carrier, whereafter: on the front side of the carrier there is provided a plurality of grid tracks arranged mutually without overlapping and in a transverse spacing; for each grid path for feeding and discharging of at most N 1 within the respective grid path of laid power line types at a grid line input current inputs and at a grid track output current outputs are provided; each grid path comprises a plurality of grid locations, on each of which an LED can be positioned, wherein the grid locations are arranged one behind the other and in an equidistant longitudinal distance to each other along a fictitious course from the grid path entrance to the grid path exit; in each grid, LEDs of at most N-1 different types are provided.

According to a further embodiment, a light-generating assembly for a headlamp for illuminating a film, studio, stage, event and / or theater environment comprises an LED arrangement comprising a support and a plurality of at least 20 LEDs arranged on a front side of the support which are configured to be supplied with electrical power from a power source, the LEDs comprising LEDs of N different types of LEDs, where N is greater than or equal to three and a plurality of each LED type is provided; a plurality of power lines is provided for powering the LEDs; and the LEDs are arranged according to a regular grid on the front side of the carrier, whereafter: on the front side of the carrier there is provided a plurality of grid tracks arranged mutually without overlapping and in a transverse spacing; each grid path comprises a plurality of grid locations, on each of which an LED can be positioned, wherein the grid locations are arranged one behind the other and in an equidistant longitudinal distance to each other along a fictitious course from the grid path entrance to the grid path exit; for each raster track for supplying and discharging power lines routed within the respective raster track, current inputs are provided at a raster track input and current outputs are provided at a raster track output; and each of the raster lines of the regular raster comprises a maximum number of different LED types resulting from an optimization rule for a highest LED package density on the front side of the carrier.

In yet another embodiment, a headlamp illuminating assembly for illuminating a film, studio, stage, event, and / or theater environment comprises an LED assembly comprising a support and a plurality of at least 20 disposed on a front side of the support LEDs configured to be powered by a power source and one of the LED array of a downstream primary lens array, the primary lens array for each LED having a single lens positioned at a distance of less than 1 cm from the respective LED , wherein the individual lenses are arranged separately.

Other features and advantages will become apparent to those skilled in the art upon review of the following detailed description and upon review of the accompanying drawings.

list of figures

• 1 schematisch und exemplarisch ein Blockschaltbild eines Scheinwerfers gemäß einer oder mehreren Ausführungsformen;
• 2 schematisch und exemplarisch Aspekte einer Rasterbahn eines regelmäßigen Rasters eines LED-Trägers einer lichterzeugenden Baugruppe für einen Scheinwerfer gemäß einer oder mehreren Ausführungsformen;
• 3 schematisch und exemplarisch Aspekte eines regelmäßigen Rasters eines LED-Trägers einer lichterzeugenden Baugruppe für einen Scheinwerfer gemäß einer oder mehreren Ausführungsformen;
• 4 schematisch und exemplarisch Aspekte einer Rasterbahn eines regelmäßigen Rasters eines LED-Trägers einer lichterzeugenden Baugruppe für einen Scheinwerfer gemäß einer oder mehreren Ausführungsformen;
• 5 schematisch und exemplarisch Aspekte einer Rasterbahn eines regelmäßigen Rasters eines LED-Trägers einer lichterzeugenden Baugruppe für einen Scheinwerfer gemäß einer oder mehreren Ausführungsformen;
• 6 schematisch und exemplarisch Aspekte eines regelmäßigen Rasters eines LED-Trägers einer lichterzeugenden Baugruppe für einen Scheinwerfer gemäß einer oder mehreren Ausführungsformen;
• 7 schematisch und exemplarisch unterschiedliche Möglichkeiten der Anordnung von LEDs;
• 8 schematisch und exemplarisch eine perspektivische Ansicht einer Primärlinsenanordnung gemäß einer oder mehreren Ausführungsformen;
• 9 schematisch und exemplarisch eine perspektivische Ansicht einer Unterstützung für eine Primärlinsenanordnung gemäß einer oder mehreren Ausführungsformen;
• 10 schematisch und exemplarisch eine perspektivische Ansicht einer Unterstützung und einer Primärlinsenanordnung gemäß einer oder mehreren Ausführungsformen;
• 11 schematisch und exemplarisch einen Ausschnitt einer Querschnittsansicht einer Unterstützung und einer Primärlinsenanordnung gemäß einer oder mehreren Ausführungsformen; und
• 12 schematisch und exemplarisch eine perspektivische Ansicht einer Reflektoranordnung gemäß einer oder mehreren Ausführungsformen.

The parts shown in the figures are not necessarily to scale; rather, the emphasis is on presenting principles of the invention. Further, like reference numerals designate corresponding parts throughout the figures. In the figures show:

• 1 schematically and exemplarily a block diagram of a headlamp according to one or more embodiments;
• 2 schematically and exemplary aspects of a grid of a regular grid of an LED carrier of a light-generating assembly for a headlamp according to one or more embodiments;
• 3 schematically and exemplary aspects of a regular grid of an LED carrier of a light-generating assembly for a headlight according to one or more embodiments;
• 4 schematically and exemplary aspects of a grid of a regular grid of an LED carrier of a light-generating assembly for a headlamp according to one or more embodiments;
• 5 schematically and exemplary aspects of a grid of a regular grid of an LED carrier of a light-generating assembly for a headlamp according to one or more embodiments;
• 6 schematically and exemplary aspects of a regular grid of an LED carrier of a light-generating assembly for a headlight according to one or more embodiments;
• 7 schematically and exemplarily different ways of arranging LEDs;
• 8th schematically and exemplarily a perspective view of a primary lens arrangement according to one or more embodiments;
• 9 schematically and exemplarily a perspective view of a support for a primary lens arrangement according to one or more embodiments;
• 10 schematically and exemplarily a perspective view of a support and a primary lens arrangement according to one or more embodiments;
• 11 schematically and exemplarily a section of a cross-sectional view of a support and a primary lens arrangement according to one or more embodiments; and
• 12 schematically and exemplarily a perspective view of a reflector assembly according to one or more embodiments.

DETAILED DESCRIPTION

In the following detailed description, reference is made to the accompanying drawings which are incorporated and which, by way of illustrating specific embodiments, illustrate how the invention may be practiced.

In this context, directional terminology, such as "top", "bottom", "back", "front", "behind", "downstream", "upstream", etc., may be used with respect to the orientation of the Figures that are described may be used. Further, terms such as "forward," "behind," or "behind" may refer to the arrangement of components with respect to the direction of the light rays. "After the lens" means, for example, one of the light exit side of the lens facing area. Because portions of embodiments may be positioned in a number of different orientations, the directional terminology may be used for purposes of illustration and is in no way limiting. It should be understood that other embodiments may be practiced and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description is therefore not to be understood in a limiting sense, and the scope of the present invention is defined by the appended claims.

Reference will now be made in detail to various embodiments and to one or more examples illustrated in the figures. Each example is presented in an illustrative manner and should not be construed as limiting the invention. For example, features illustrated or described as part of one embodiment may be applied to or in conjunction with other embodiments to yield yet a further embodiment. That the present invention includes such modifications and variations is intended. The examples are described using a specific language which should not be construed as limiting the scope of the appended claims. The drawings are not true to scale and are for illustrative purposes only. For ease of understanding, unless otherwise indicated, the same elements have been identified by the same references in the several drawings.

The 1 shows a block diagram of a headlight 1 according to one or more embodiments. The headlight 1 includes a base headlamp module 2 and one or more of this module 2 downstream optics modules 3 , The following will always be the "optics module 3", although several optics modules 3 can be provided.

The basic headlamp module 2 may be a light-generating assembly 11 include, in which a plurality of LEDs 112 (on one in the 1 not shown carrier) are arranged. The LEDs 112 can be a primary lens arrangement 114 be downstream. The optics module 3 is on an optical axis A of the light-generating assembly 11 aligned. The optics module 3 may include one or more light processing units, such as thick and thin lenses, Fresnel lenses, diffusers, diffuser disks, reflectors, prisms, light and color mixing assemblies, and the like.

In one embodiment, the headlamp is 1 modular, in such a way that the light-generating assembly 11 with the primary lens arrangement 114 the basic headlamp module 2 forms and the light-shaping optical module 3 is selected from a set of different optical modules, each of which is formed, to the base headlamp module 2 to be coupled.

The basic headlamp module 2 can therefore be designed to serve as a platform for a variety of different optical modules, so that by means of the base headlight module 2 different headlights 1 can be designed for different applications. Thus, in one embodiment, the base headlamp module 2 be configured to output light with a certain strength, in a certain color mixing and / or with a specific emission characteristics, which will be discussed in more detail later.

On some optional aspects of the photogenerating assembly 11 will be discussed in more detail below.

For this purpose, first the 7 which illustrates various theoretical possibilities of arranging LEDs on a support. There, 121 LEDs are positioned on a square carrier, and the LEDs comprise four different types. For example, the empty boxes illustrate white LEDs, the boxes crossed with red LEDs, those with vertical bars green boxes and the boxes with horizontal crossbars blue LEDs. These 121 LEDs are to form a light source arrangement for a headlight according to an intellectual application.

According to the variant ( 3 ), the 121 LEDs are arranged in a regular grid, after which two different color types are provided in each line and two mutually adjacent lines have complementary color types. This can lead to a good color mixture.

According to the variant ( 2 ), the LEDs have been arranged according to a random process, which may also lead to a good mixing of the mix, but at the same time makes it particularly difficult to provide a simple power supply for these randomly arranged LEDs, which different LED types require different currents, and thus for each LED Type is to provide its own power line. For example, it may happen that all four LED types are present in a row, which makes the laying of power lines difficult, especially space consuming.

According to the variant ( 1 ), the LEDs are also arranged according to a regular pattern, such that only one LED color type is provided in the diagonal and along lines parallel to the diagonal, allowing a simple implementation of the power supply and current drain, but a poor one Color mixing leads.

Good color mixing requires not only that the different types of LEDs are distributed as uniformly as possible over the surface of the carrier, but also that they are arranged in the smallest possible distance from each other, so with a high packing density. The greater the distance between the LEDs to each other, the worse the color mixture (or the larger would have to be all the following optical components even with the same beam angle, which would quickly put the practical feasibility of such a headlight practical limits).

Next go with a high packing density the aforementioned problems associated with the cooling.

From the above, it has become clear that it is challenging to meet several desired characteristics of a light-generating package with an LED array, namely, the aspects of high packing density (color mixing), simple power supply, and good cooling. Also the solution of this problem, the present invention turns to:

According to one embodiment, a light-generating assembly 11 for a headlight 1 proposed for lighting a film, studio, stage, event and / or theater environment. The light-generating assembly 11 (hereinafter also referred to simply as "assembly") has an LED assembly comprising a support 111 (S. 2 ) and one on a front side of the carrier 111 arranged plurality of at least 20 LEDs 112 includes. The number of LEDs 112 (S. 3 ) may also be significantly greater than 20, for example, greater than 100, greater than 300, or even greater than 500. The present embodiments involve in terms of the amount of LEDs 112 no upper limits. In practice, however, an upper limit may possibly arise, for example, due to a maximum allowable or possible magnitude of the supply voltage.

The front of the wearer 111 is for example planar. In one embodiment, the carrier is 111 a PCB (also referred to as Printed Circuit Board (PCB)), which / may be, for example, a so-called single-layer PCB, so a PCB, in which only in a single layer of power lines are laid in the form of traces.

In one embodiment, the carrier is 111 formed substantially flat cylindrical, so that its front creates approximately a circular area on which the LEDs 112 can be arranged. Instead of the circular area may according to another embodiment, a polygonal, such as a hexagonal, rectangular, triangular or parallelogram-shaped surface of the front by the carrier 111 be created.

For example, the front of the wearer 111 an area of at least 20 cm ² .

The LEDs 112 can each be implemented as one of the following: As a light emitting diode, for example as a chip-scale package LED and / or flip-chip LED and / or as micro footprint LED, as an organic light emitting diode, as a resonant cavity light emitting diode and / or laser diode ,

In one embodiment, all LEDs are on 112 the same design; For example, it is all LEDs 112 chip-scale package LEDs or flip-chip LEDs or micor-footprint LEDs. For example, in another embodiment, only laser diodes are LEDs 112 intended.

The LEDs 112 however, especially if they all have the same design, may comprise LEDs of N different LED types, where N is greater than or equal to three and a plurality of each type of LED is provided. This may mean, for example, that different LED color types are provided. According to one embodiment, red LEDs (first type) 1121, green LEDs (second type) 1122, blue LEDs (third type) 1123, and white LEDs (fourth type) 1124 are provided, for example, in the embodiment according to FIG 6 is exemplified. The term "LED type" does not necessarily mean in the present case the design of which some examples have been given above, but for example the color or the light intensity or another property in which LEDs of the same design can differ from one another.

In one variant, all LEDs have 112 an equal footprint, which may for example be less than 4 mm ² , less than 2 mm ² or even less than 1 mm ² . By the base of an LED, for example, that area is meant that after mounting the LED to the carrier 111 is claimed by the LED on the front of the carrier at least, for example, an area after mounting the LED to the carrier 111 on the front of the carrier 111 is applied.

In one embodiment, the LEDs are 112 at a density of at least 8 LEDs / cm ² on the front of the carrier 111 arranged. The maximum distance between two adjacent LEDs 112 is for example 3.5 mm, for example measured between the optical centers of the LEDs 112 ,

The LEDs 112 can each be designed as a discrete component, for example as a single LED, which is configured on the support 111 to be arranged, for example by means of bonding, gluing or sintering, which can be done for example manually or by a placement machine.

In particular, each of the LEDs 112 an LED housing, which is part of the respective LED 112 formed.

The LEDs 112 may be configured to be powered by a power source with electrical power. The power source, which is not shown in the accompanying drawings, may, for example, on the carrier 111 be connected, for example, at the rear. For example, the power source is a power source, such as a constant current source or a PWM power source, configured to provide a different current for each type of LED. In particular, the power source can therefore have a plurality of current outputs which are isolated from one another, and output a current adapted to the respective LED type at each of its current outputs. For example, the currents differ in terms of amount.

In one embodiment, the assembly includes 11 to power the LEDs 112 Continue a variety of in the carrier 111 laid power lines, wherein the power lines comprise power lines of N different types of power lines. For example, the power lines are laid without crossing in a single layer of the carrier without crossing. The carrier may be, for example, a single-layer PCB or include, in which the power lines, such as tracks, are laid without crossing.

The power lines are designed to supply the different types of LED, for example, to lead to different currents, for example, different amounts of each other in terms of magnitude. However, the currents may also differ (in addition or as an alternative to the amount) in terms of frequency, phase and / or shape.

In the figures are the power lines with the reference numerals 1111 . 1112 and 1113 characterized. For example, via the first power lines 1111 in each case a first current for the supply of LEDs 1121 of the first type, via the second power lines 1112 in each case a second current for the supply of LEDs 1122 of the second type, over the third power lines 1113 in each case a third current for supply of LEDs 1121 of the third type, etc. Thus, the power lines of different types are arranged, for example, electrically isolated from each other. The first power lines 1111 may be connected to a first current output of the power source, the second power lines 1112 with a second current output of the power source, the third power lines 1113 with a third current output of the power source, etc.

For example, the power lines 1111 to 1113 implemented within the carrier 111 at its front side as printed conductors, for example as printed conductors of a single-layer or multilayer printed circuit board (PCB).

For example, all the power lines have the same width and the same depth. The different types of power lines may differ in particular in that they carry different currents. For example, the difference between the types of power lines is merely the amount of current they carry.

Next, the LEDs can 112 be arranged according to a regular grid on the front of the carrier. The regular grid is defined, for example, at least by the following four specifications, with compliance with these requirements also in the 3 - 5 to which reference is also made below:

First: on the front of the wearer 111 is a plurality of mutually overlapping and arranged at a transverse spacing raster webs 4 intended. For example, the grid paths run 4 parallel to each other. For example, the transverse distance is equidistant, for example both along the longitudinal extent between two adjacent raster webs 4 as well as grid track 4 to grid track 4 ,

Second, for each grid 4 are for the supply and discharge of at most N-1 within the respective grid of misplaced power line types at a grid line input 42 Current inputs (see reference numbers 421 and 422 in 3 ) and at a raster path output 43 Current outputs (see reference numbers 431 and 432 in 3 ) intended.

Third, every grid 4 includes a variety of grid locations 41 , on each one LED 112 is positionable, with the grid locations 41 one after the other and in an equidistant longitudinal distance dH (LED) (s. 5 ) to each other along a fictional course from the grid entrance 42 are arranged to the raster path exit 43.

Fourth: In every grid 4 are LEDs 112 provided by at most N-1 different types.

These four specifications will be explained in more detail below, with the fifth specification optionally being able to provide that the power lines (see reference numbers 1111 and 1112 in 4 ) within the respective grid path 4 thereby in the same layer of the carrier 111 are laid without crossing, that they are arranged horizontally and / or vertically offset from one another. In one embodiment, the power lines are only horizontally offset from each other, so for example along a direction parallel to the front of the carrier 111 ,

For example, in the assembly 11 according to the embodiment in the 2 four LED types provided. The number of LEDs 112 can be over 100, for example. First, on the illustrated front of the wearer 111 a plurality of mutually overlapping and arranged in an equidistant transverse spacing raster webs 4 intended. In the example shown, the transverse spacing is a distance parallel to a horizontal direction, for example parallel to the Y direction of the illustrated coordinate system. The grid tracks 4 extend, for example, perpendicular thereto, for example, parallel to another horizontal direction, for example, parallel to the X direction of the coordinate system shown. Already here, however, it should be noted that the grid tracks 4 not necessarily have a rectilinear course, but could also have a curved extension.

For example, the transverse distance between each two adjacent raster webs 4 always the same and does not change from neighborhood couple to neighborhood couple. Due to the equidistant transverse spacing, it is also impossible for the grid paths to overlap.

For example, all raster webs 4 be arranged in the same plane.

In one embodiment, each of the raster webs opens and / or ends 4 in an edge region of the carrier 111 , The grid entrance 42 and / or the raster path output 43 a respective grid track 4 So it can be in the edge area of the carrier 111 lie. This can be, for example, the supply and discharge of power lines, so ultimately the connection of the raster tracks 4 to the power source.

In each of the grid tracks 4 Proportionately no more than N-1 power lines are provided. In the example according to the 2 , where a total of N = four LED types are provided, there are so per grid track 4 maximum N-1 = three power line types. Thus are also per grid track 4 a maximum of three LED types arranged. The number of power line types in a given grid line 4 can therefore be identical to the number of LED types in the relevant grid path 4 , This aspect is also used in the embodiment according to 3 clearly, which is an exemplary grid 4 , as in the embodiment according to the 2 can be implemented shows. After that are at the entrance 42 the grid track 4 three power inputs 421 . 422 and 423 for the three different power line types 1111 . 1112 and 1113 intended. Accordingly, you will find at the exit 43 the grid track 4 three current outputs 431.432 and 433.

Within the respective grid path 4 For example, the different types of power lines can thereby be in the same layer of the carrier 111 without intersection, that they are offset horizontally and / or vertically (optional fifth specification). This aspect is exemplary in the 4 and 5 shown where the grid track 4 For example, two different types of LEDs, namely first LEDs 1121 and second LEDs 1122 and where the different types of power lines, for example, thereby in the same layer of the carrier 111 laid without crossing that they are only offset horizontally to each other.

According to one embodiment, it is therefore not necessary for the realization of a crossing-free laying of the power lines that the power lines are offset in the vertical direction, ie in the example parallel to the Z direction of the coordinate system shown, but only in the horizontal direction, that is, for example, parallel to X. Direction and / or Y direction of the illustrated coordinate system. The power lines 1111 and 1112 So be within the grid 4 For example, "above" (in the Y direction), "below" (in the Y direction), and / or "next to" (in the X direction) those LEDs that do not power them. For example, the first power line 1111 "Over" the second LEDs 1122 led, and the second power line 1112 "Under" the first LEDs 1121 ,

As in the 3 and 4 illustrates each raster path 4 a variety of raster parking spaces 41 on. On each raster parking space 41 is exactly one of the LEDs 112 positionable. The raster parking spaces 41 are one behind the other and in an equidistant longitudinal distance from each other along a fictitious course of the grid entrance 42 to the grid track exit 43 arranged. The trajectory, ie the longitudinal extent of the grid path 4 , can be straight. However, curved course paths also come into consideration and the present embodiments are not limited to straight course paths.

It should be noted that within a grid 4 the raster parking spaces can adjoin one another directly, and that adjacent raster webs 4 also directly adjacent to each other, as long as a minimum distance between the LEDs both within a grid 4 as well as between the LEDs of adjacent grid tracks 4 is complied with.

As I said in every grid 4 LEDs 112 provided by at most N-1 different types. For example, for a total of four different types of LEDs that each grid 4 no more than three different LED types are provided. For a total of three different LED types are in each grid 4 no more than two different LED types provided, etc.

In one embodiment, the regular grid is the front of the wearer 111 at least five grid tracks 4 in which at least three raster webs 4 in each case at least N-1> 2 LED types are provided.

It can be beneficial in most raster webs 4 to provide exactly two LED types and thus also two types of power line in order to achieve on the one hand good color mixing and on the other hand a high packing density. For example, in one embodiment at least 80% of the raster webs are 4 exactly two LED types and accordingly exactly two power line types provided.

In particular, it can be provided that in an inner region of a respective web 4 , which by at least a first Rasterstellplatz 41 and at least one last screen space 41 the respective train 4 is limited, a maximum of two different LED types are provided.

In one embodiment, the number of different LED types in each of at least 80% of the raster tracks 4 the same, for example, in each interior of at least 80% of the raster webs 4 is equal to, for example, two.

As has been explained above, in one embodiment, each of the grid tracks 4 in an edge region of the carrier 111 start and end there too. For a circular front of the wearer 111 For example, an outer ring may be provided in which all raster webs 4 begin and end. In said outer ring, for example, said first screen locations and last screen locations can be provided. Because of this peripheral position, these screen locations are comparatively easily accessible, and there may be provided, for example, in addition to the maximum two in the interior of a respective grid path arranged LED types, a third LED type.

Within each grid 4 can the LEDs 112 same type in series with each other. Thus, in one embodiment, the LEDs "see" (receive) each other in series with each other 112 same type each same current.

The raster parking spaces 41 all raster webs 4 can be the same size. This can facilitate the programming and operation of a placement machine. Next, all LEDs can 112 have the same footprint, which is less than or equal to the area of a respective Rasterstellplatzes 41 is.

In addition, it can be provided that the grid locations 41 within a respective grid path 4 are not offset from each other in a direction perpendicular to the fictitious gradient. This optional aspect is also in the 3 - 5 exemplified: There run the grid tracks 4 in a first horizontal direction, for example in the X direction of the respective coordinate system shown. The raster parking spaces 41 , and with it the LEDs 112 , within a respective grid 4 are also only along the course path direction of the grid path, so offset in the X direction to each other, but not in the perpendicular Y direction.

In another embodiment, the raster webs form 4 with their grid locations 41 on the front of the carrier 111 a hexagonal tiling out.

With view on 5 should have some exemplary dimensions within one of the grid tracks 4 be explained. The dimensions shown there can be used equally for all other grid paths 4 of the carrier 111 be authoritative.

First, the grid line 4 a perpendicular to its longitudinal extent (for example, in the X direction of the coordinate system shown) width ZH (for example, in the Y direction of the coordinate system shown), which is for example in the range of a few millimeters.

Inside the tracks are the LEDs 112 of which one LED of the second type 1122 and an LED of the first type 1121 are shown, in the equidistant longitudinal distance dH (LED), which is parallel to the longitudinal extent of the grid path 4 extends, side by side at their respective Rasterstellplätzen 41 arranged. Again, the two LEDs 1121 and 1122 not in a direction perpendicular thereto, that is, in the example shown, not offset from one another in the Y direction. The illustrated dashed line in the Y direction marks a separation between the two grid locations 41 ,

As stated above, all LEDs can 112 , as well as the illustrated LED of the first type 1121 and the illustrated LED of the second type 1122 have the same footprint, which is defined for example by a width b (LED) and a length a (LED). For example, the width b (LED) and the length a (LED) are each a few millimeters, for example, such that the footprint of each of the LEDs 112 is less than or equal to 4 mm ² , 2 mm ² or less than 1 mm ² .

Inside the grid tracks 4 are the power lines of three different types 1111 . 1112 and 1113 For example, laid without crossing in the same layer of the carrier 111, for example, by being arranged horizontally, ie offset in the X direction and / or in the Y direction to each other. In the illustrated raster path 4 are therefore LEDs in total 112 provided by three different types, the LEDs of the first type 1121 from the power lines of the first type 1111 be powered, the LEDs of the second type 1122 from the power lines of the second type 1112 etc.

In one embodiment, the power lines are 1111 . 1112 . 1113 are implemented as tracks and only on the front of the carrier 111 educated.

As already explained above, the power lines can be inside the carrier 111 be designed as printed conductors, for example as PCB conductor tracks. For example, they all have the same width b (TRC), which may for example be less than 1 mm, wherein the width b (TRC) can be seen to be parallel to the X direction or parallel to the Y direction, depending on which direction the Power line runs. Their depth in the Z direction of the coordinate system shown is not relevant here, since the power lines are within the same layer of the carrier 111 can be laid without crossing. For example, when laying the power lines within the grid 4 Make sure that the power lines to the LEDs 112 in both horizontal directions (X and Y directions) are spaced apart. For example, the distance in the Y direction must be at least dV (LED-TRC), and in the X-direction at least dH (LED-TRC). Further, it may be required that between the power lines of different types also a minimum distance in both horizontal directions is maintained, the minimum distance in the Y direction and the minimum distance in the X direction may be equal, and in the 5 exemplified by d (TRC).

Regarding 5 explained measures or measures, such as said minimum distances can sometimes be assumed as known, or as input parameters for the formation of the regular grid.

In one embodiment, each grid pattern is found 4 of the regular grid a maximum number of different LED types, resulting from an optimization rule for a highest LED packing density on the front of the carrier 111 results.

An exemplary optimization rule will be explained below.

The example optimization rule includes a first assumption that each raster trajectory 4 at a grid rail entrance 42 Power supplied and at a raster path output 43 Electricity must be dissipated. The number n corresponds to _{TRC, IN of} the current inputs 421 . 422 , ... the number of different power line types and thus the number n _{COL of} the different LED types within the relevant grid line 4 , In addition, the first assumption implies that the number of current inputs is identical to the number n _{TRC, OUT of} the current outputs. The first assumption can be expressed by equation (1): $$n_{TRC.IN}=n_{TRC.OUT}=n_{COL}$$

wobei n_TRC,hor die Anzahl der Stromleitungen angibt, die zwischen zwei benachbarten LEDs 112 zu verlegen sind (bei dem Ausführungsbeispiel gemäß 5: entsprechend einen Versatz in X-Richtung), und n_TRC,ver die Anzahl der Stromleitungen angibt, die „über“ und/oder „unter“ den LEDs 112 zu verlegen sind (bei dem Ausführungsbeispiel gemäß 5: entsprechend einen Versatz in Y-Richtung).The exemplary optimization script includes a second assumption that a certain number of power lines (eg, traces) are "over" and "under" (in the sense of horizontal directions) the LEDs 112 as well as between the LEDs 112 must be passed to ensure a crossing-free installation. This number has a significant influence on the packing density. The second assumption of the exemplary optimization rule can be expressed by equations (2): $$\begin{array}{l}{n}_{TRC.HOr}=n_{COL}\\ n_{TRC.ver}=\left(n_{COL}-1\right)\cdot 2\end{array}$$

where n _{TRC, hor} indicates the number of power lines to be laid between two adjacent LEDs 112 (in the embodiment of FIG 5 : corresponding to an offset in the X direction), and n _{TRC, ver} indicates the number of power lines, the "above" and / or "below" the LEDs 112 to be laid (in the embodiment according to 5 : corresponding to an offset in the Y direction).

wobei:

• - d_hor den äquidistanten Längsabstand der LEDs innerhalb der Rasterbahn 4 angibt (s. Bezugsziffer dH(LED) in 5);
• - d_ver den Mindestabstand in einer Richtung senkrecht zur Rasterbahnerstreckung zwischen zwei LEDs 112 benachbarter Rasterbahnen 4 angibt;
• - b_LED die Länge einer LED 112 angibt (s. Bezugsziffer a(LED) in 5), die maßgeblich für die Grundfläche der LED 112 ist, wobei die Länge b_LED senkrecht zur Breite der Rasterbahn sein kann;
• - h_LED die Breite einer LED 112 angibt (s. Bezugsziffer b(LED) in 5), die maßgeblich für die Grundfläche der LED 112 ist, wobei die Breite der LED parallel zubereitet der Rasterbahn sein kann;
• - d_TRCLED,hor ein erster horizontaler Abstand, der zwischen einer jeweiligen LED 112 und einer benachbarten Stromleitung einzuhalten ist, wobei d_TRCLED,hor parallel zur Längserstreckung der Rasterbahn bzw. senkrecht zur Breite der Rasterbahn sein kann (s. Bezugsziffer dH(LED-TRC) in 5);
• - d_TRCLED,ver ein zweiter horizontaler Abstand, der zwischen einer jeweiligen LED 112 und einer benachbarten Stromleitung einzuhalten ist, wobei d_TRCLED,ver senkrecht zur Längserstreckung der Rasterbahn bzw. parallel zur Breite der Rasterbahn sein kann (s. Bezugsziffer dV(LED-TRC) in 5);
• - b_TRC die Breite einer jeweiligen Stromleitung (s. Bezugsziffer b(TRC) in 5); und
• - d_TRC der Mindestabstand, der zwischen zwei benachbarten Stromleitungen einzuhalten ist (s. Bezugsziffer d(TRC) in 5)

The exemplary optimization font can then determine, for example, at what distance the LEDs 112 one behind the other within the grid 4 are to be arranged, and which distance adjacent Roller coasters must have to each other; the example optimization book may then include, for example, equation (3) below: $$\begin{array}{l}{d}_{HOr}=b_{LeD}+2\cdot d_{TRCLeD.HOr}+n_{TRC.HOr}\cdot b_{TRC}+\left(n_{COL}-1\right)\cdot d_{TRC}\hfill \\ d_{HOr}=b_{LeD}+2\cdot d_{TRCLeD.HOr}+n_{COL}\cdot b_{TRC}+\left(n_{COL}-1\right)\cdot d_{TRC}\hfill \\ \hfill \\ d_{ver}=H_{LeD}+2\cdot d_{TRCLeD.ver}+n_{TRC.ver}\cdot b_{TRC}+\left(n_{TRC}-2\right)\cdot d_{TRC}+d_{TRC}\hfill \\ d_{ver}=H_{LeD}+2\cdot d_{TRCLeD.ver}+2\cdot \left(n_{COL}\cdot -1\right)\cdot b_{TRC}+\left(n_{TRC}-2\right)\cdot d_{TRC}+d_{TRC}\hfill \end{array}$$

in which:

• - d _hor the equidistant longitudinal spacing of the LEDs within the grid path 4 indicates (see reference number dH (LED) in 5 );
• - d _ver the minimum distance in a direction perpendicular to the Rasterbahnerstreckung between two LEDs 112 adjacent grid tracks 4 indicates;
• - b _LED the length of an LED 112 indicates (see reference a (LED) in 5 ), which is relevant to the footprint of the LED 112 is, wherein the length b _{LED can be} perpendicular to the width of the grid path;
• - h _LED the width of an LED 112 indicates (see reference number b (LED) in 5 ), which is relevant to the footprint of the LED 112 is, wherein the width of the LED can be prepared parallel to the grid path;
• - d _{TRCLED, hor} a first horizontal distance between a respective LED 112 and a neighboring power line, where d _{TRCLED, hor} parallel to the longitudinal extent of the grid path or perpendicular to the width of the grid track can be (see reference numeral dH (LED-TRC) in 5 );
• - d _{TRCLED, ver} a second horizontal distance between a respective LED 112 and an adjacent power line, where d _{TRCLED, ver can be} perpendicular to the longitudinal extent of the grid path or parallel to the width of the grid path (see reference numeral dV (LED-TRC) in 5 );
• - b _TRC the width of a respective power line (see reference b (TRC) in 5 ); and
• - d _{TRC is} the minimum distance to be maintained between two adjacent power lines (see reference d (TRC) in 5 )

The exemplary optimization font can be further based on a third assumption that the power lines (which can be implemented, for example, as strip conductors) always have the same width and always, ie whether they run in the X direction or Y direction, the same minimum distance d (FIG. TRC) (= d _TRC ) to each other. However, this boundary condition does not always have to apply; another optimization document can, for example, also take into account that the different types of power lines differ not only in the magnitude of the current, but also in terms of their spatial dimensions.

The example optimization rule may also include a fourth assumption that all LEDs 112 are arranged in an equidistant distance from each other, ie in a fixed grid RM. This grid dimension RM results, for example, from the maximum of the first horizontal distance (for example in the X direction, see reference numeral dH (LED) in FIG 5 ) within a raster path 4 and the second horizontal distance between two LEDs 112 two adjacent grid tracks 4 (eg in the Y direction). The fourth assumption can thus be expressed by the following equation (4) as follows: $$RM=\text{Max}\left(d_{HOr}.d_{ver}\right)$$

By way of example, it can be shown on the basis of the exemplary optimization rule that a highest packing density is possible only when using a certain number of LED types per grid track. For example, at the highest packing density, the above-mentioned two distances between two adjacent LEDs (d _hor (or dH (LED)) and d _ver ) are at least approximately equal and no space is "wasted".

According to one embodiment, the exemplary optimization rule is satisfied only if the absolute difference (I d _hor -d _ver I) between the equidistant longitudinal distance d _hor (or dH (LED)) and the distance d _ver between two LEDs of two adjacent raster webs ( 4 ) has a minimum.

For example, the optimization rule can be laid down in a commercially available calculation program. The input parameters are, for example, the dimensions of the LEDs 112 and the power lines. Then, for example, the number of different LED types can be varied within a grid, and at the same time it can be observed when the above-mentioned difference forms an absolute minimum. At this point, for example, the best packing density is achieved.

The exemplary optimization rule explained above will now be explained with reference to an example:

For the calculation example, the following parameters are used: it is assumed that all LEDs 112 have a square base, with b _LED = h _LED = 2 mm. For example, all power lines have a width of 500 microns, and the minimum distance between two power lines is, for example, also 500 microns, so that applies: b _TRC = D _TRC = 500 microns. The minimum distance between one of the LED 112 and an adjacent power line is, for example, in both horizontal directions 250 μm, so that applies d _{TRCLED, hor} = d _{TRCLED, ver} = 250 μm.

Then, from the above exemplary optimization rule, the values shown in the following table follow: n _COL d _hor d _ver | d _hor d _VER | RM 1 3.0 mm 2.0 mm 1.0 mm 3.0 mm 2 4.0 mm 4.0 mm 0 4.0 mm 3 5.0 mm 6.0 mm 1.0 mm 6.0 mm 4 6.0 mm 8.0 mm 2.0 mm 8.0 mm 5 7.0 mm 10.0 mm 3.0 mm 10.0 mm

It follows that for n _COL = 2 the optimization rule is satisfied, since then the absolute difference between the said distances is zero. The optimization rule therefore specifies that in a respective grid 4 , For example, in said inner region of a respective grid path 4 , a maximum of two different LED types are provided in order to achieve a maximum packing density.

Assuming that all first horizontal distances (in the illustrated embodiment in the X direction) and second horizontal distances (in the illustrated embodiment in the Y direction) are the same, it can generally be seen that it is advantageous in the US Pat Interior of each grid 4 to provide a maximum of two different LED types.

It should be noted that within a grid 4 quite some LEDs of the same type can be arranged side by side, which may imply, for example, that no power lines are to be laid perpendicular to the direction of extension of the grid path between these LEDs. This aspect is for example in the 4 illustrates where two LEDs 1121 of the first type within the same grid 4 are arranged side by side.

It should be emphasized further here that a further LED type can be provided in an edge area of the carrier, so that, per grid line, if the edge area is taken into account, a total of n _COL + 1 different LED types can be provided. This is due to the fact that the edge area is better accessible with regard to the dissipation and supply of power lines than the interior area of the carrier.

In particular, the edge region can be designed such that it allows the operation of the additional LED type without reducing the packing density.

The 6 finally shows an example of a light-generating assembly 11 , which has a total of four different LED types and a total of 439 LEDs 112 on the carrier 111 have been arranged according to the optimization rule explained above by way of example. First, it is recognizable that in the interior of a respective grid path 4 a maximum of two different types of LEDs are provided. In the embodiment, it is different LED color types.

The interior is initiated, for example, by the first LED type change, if one mentally from the edge region of the carrier in the interior of the respective grid path 4 emotional. For example, there are 84 LEDs 1123 of the third type (for example blue LEDs), 104 LEDs 1121 of the first type (for example red LEDs) and 155 LEDs 1122 of the second type (eg green LEDs) and 196 LEDs 1124 of the fourth type (for example, white LEDs).

In one embodiment, the light-generating assembly includes 11 also one in the 12 schematically and exemplarily illustrated reflector assembly, the LEDs 112 is downstream, and that for each of the LEDs 112 a single reflector 1151 having. The individual reflectors 1151 can the LEDs 112 each partially surrounded, as in the 12 schematically in the middle single reflector 1151 is shown. For example, each LED stands out 112 at least partially in the respective individual reflector 1151 into it. Shown are in the 12 only seven individual reflectors 1151 it being understood that this is for illustrative purposes only; in fact, the number of individual reflectors 1151 corresponds to the number of LEDs 112 , which, as I said, for example, greater than 20, but may also be significantly higher, for example, may be greater than 500.

In another - not shown here - embodiment comprises the reflector assembly 115 just a single reflector that is arranged to light all the LEDs 112 to receive reflected. This embodiment is considered, for example, if the LEDs are arranged with a high packing density.

In another embodiment, the light-generating assembly includes 11 also one in the 8th schematic and exemplary primary lens arrangement shown 114 that the LEDs 112 at a distance of less than 1 cm, and which may be formed, for example, that of the LEDs 112 emitted light to receive and α in an emission angle (s. 1 ) in the range of less than 70 °, the range may be greater than 30 ° at the same time. For example, the radiation angle is in the range between 45 ° and 65 °.

In one embodiment, the primary lens arrangement becomes 114 instead of the reflector arrangement 115 used. However, it is also conceivable that in another embodiment, the primary lens arrangement 114 and the reflector assembly can be used.

The primary lens arrangement 114 can be formed in one piece. Next, the primary lens arrangement 114 be made of a glass. In one embodiment, the primary lens assembly is 114 formed for example by a one-piece glass lens array. The primary lens arrangement 114 In another embodiment, it may be fabricated in the manner of a silicone-on-glass (SoG) array.

For example, the primary lens assembly may include a plurality of single lenses 1141, with each of the LEDs 112 at least or exactly one lens 1141 can be provided as in the 8th shown schematically. For example, sits above each LED 112 exactly one lens 1141 the primary lens arrangement 114 ,

The primary lens arrangement 114 can be a support structure 1145 have over all the lenses 1141 connected to each other. This support structure may for example be made at least partially of glass, and the lenses 1141 For example, they may be at least partially made of silicone. Instead of silicone, another plastic is used in another embodiment. For example, the lens elements 1141 not cropped.

The primary lens arrangement 114 can be realized, for example, according to the following manufacturing techniques: as an injection molded part of optical plastic or as an injection molded part of optical silicone; sprayed on a glass slide or on the glass to molded silicone lenses; mounted on a glass slide by so-called sol-gel technique lenses of silica or similar sols; as a cast and / or pressed glass part, optionally with a post-processing, for example by grinding, polishing and / or coating.

In another embodiment (not shown here in the drawing), the primary lens arrangement 114 only a single lens for all LEDs 112 on. This embodiment is particularly then advantageous if the LEDs in a high packing density and in terms of types well mixed on the support 111 are arranged.

Further or other optional features and / or configurations that the primary lens arrangement 114 will now be explained with reference to the remaining drawings.

According to a further embodiment, a light-generating assembly 11 (S. 1 ) for a headlight 1 for illuminating a film, studio, stage, event and / or theater environment, with an LED arrangement comprising a support 111 and one on a front side of the support 111 arranged plurality of at least 20 LEDs 112 which are adapted to be supplied by a power source with electrical power, and one of the LED array downstream primary lens assembly 114 ,

What has been done above for exemplary configurations of the LED array, in particular what the nature and design of the carrier 111 and the arrangement of the plurality of LEDs 112 As far as this embodiment of the light-generating assembly is concerned 11 also apply. In particular, in this embodiment, the LEDs 112 be arranged in the regular grid. In other embodiments, the LEDs are 112 not necessarily arranged in the regular grid described above, but may also have been arranged according to another grid and / or random.

In an embodiment where the LEDs 112 either arranged as described above after the regular grid or not arranged after the regular grid, has the primary lens arrangement 114 for each LED 112, a single lens positioned at a distance of less than 1 cm from the respective LED 112, the individual lenses being arranged separately from each other.

This aspect is exemplary and exemplary in the 11 illustrated, which is a section of a cross section of the light-generating assembly 11 shows. On the carrier 111 is an LED 112 arranged. The illustrated LED 112 forms one LED of the plurality of LEDs 112 the LED arrangement. Above the LED 112 is a single lens 1141 of the primary lens assembly 114 arranged. For example, the distance to the LED is less than 1 cm and more than 0.1 mm. The single lens 1141 the primary lens arrangement 114 Thus, according to one embodiment, it is not in contact with the LED 112 arranged but at the smallest possible distance thereto, for example at a distance of 0.2 mm to 0.5 mm.

The primary lens arrangement 114 can a variety of such individual lenses 1141 exhibit. For example, the number of individual lenses corresponds 1141 the primary lens arrangement 114 exactly the number of LEDs 112 on the front of the wearer 111 are arranged.

In the present case, the term single lens is to be understood in particular as meaning that the individual lenses 1141 the primary lens arrangement 114 are positioned separately from each other. In this embodiment, the primary lens assembly is 114 not in one piece; Rather, all individual lenses 1141 be made separately and placed.

Every single lens 1141 may be formed, the light of the positioned below her LED 112 to collect and spend bundled.

The size of a single lens 1141 can depend on a radiating surface and a radiation characteristic of the LEDs 112 be selected, and in dependence on a desired half-angle and a desired light distribution to the lens. Further boundary conditions may arise from the mechanical and / or electrical construction of the light-generating assembly 11 result. The latter boundary conditions include, for example, a desired diameter of the optics, the packing density of the LEDs 112 , the width of the power lines in the carrier 111 etc.

In one embodiment, the single lenses are 1141 the primary lens arrangement 114 each around a single glass lens 1141 for example, around a micro-glass lens, or around a single-plastic lens, or around a single-silicone lens. The single lenses 1141 can therefore be made of glass, plastic or silicone. For example, the single glass lenses 1141 produced by molding, which can be inexpensive.

In another embodiment, the individual lenses 1141 implemented as single silicone lenses, so made of a silicone. In this embodiment, the individual lenses 1141 for example, on the support 113 be sprayed.

The base area of a respective single lens 1141 For example, it is not and only slightly larger than the footprint of the LED 112 in which it is arranged, which is schematically in the 11 is illustrated. Accordingly, a respective single lens 1141 has, for example, a base area of less than 5 mm ² .

In one embodiment, the photogenerating assembly is 11 between the LEDs 112 and the primary lens assembly 114 no further lens arrangement provided. In particular, the primary lens assembly includes 114 not the parts of the LEDs 112 , such as a housing of an LED 112 , The primary lens arrangement 114 on the one hand and the LEDs 112 On the other hand, according to one embodiment, they are produced separately from one another and, by mutual mechanical coupling, the light-generating assembly 11 form.

In one embodiment, the primary lens assembly is 114 that said the plurality of single lenses 1141 has, over a support 113 , of which a section also in the 11 is shown to the wearer 111 coupled. Support 113 on the one hand on the front of the wearer 111 abutment, wherein for coupling to the carrier 111 for example, an electrically insulating layer 1137 can be provided, for example, ensures that the support 113 as well as the primary lens arrangement arranged thereon 114 from the carrier 111 , in which said power lines are formed, is electrically isolated.

Further aspects of the primary lens arrangement 114 as well as the support 113 will now be with additional reference to the 9 and the 10 explains:

For example, the support points 113 a large number of equal-sized recesses 1131 on, in which the individual LEDs 112 protrude and over which the individual lenses 1141 the primary lens assembly and 14 are placed. For example, the support 113 by means of the recesses 1131 formed sieve-shaped.

The dimensions of a respective recess 1131 are for example the dimensions of an LED 112 adapted, as in the 11 is shown schematically.

Support 113 can be made for example as a milled part or as an injection molded part. In one embodiment, the support is 113 integrally formed.

For example, the support allowed 113 an at least almost loss-free light guide; for example, such that the light of each LED 112 with a high efficiency in the particular single lens 1141 is coupled.

According to another embodiment, which is not shown in the accompanying drawings, the individual lenses 1141 each with its own supports, for example, in the form of small "feet" / "legs" be equipped, and with these own supports on the support 111 can be fastened, above the relevant LED 112 be arranged.

According to one embodiment, the support points 113 for each of the recesses 1131 on one of the LEDs 112 opposite side a respective physically trained centering 1132 on. A respective centering aid 1132 for example, can accommodate a single lens 1141 limit. This aspect is in the 9 - 11 represented, after which the centering aid may be formed, for example in the form of small flat cylinder, each one above the recess 1132 limit lying area and an exact positioning of the Einzellinse 1141 allow above the recess. In another embodiment, a respective centering aid 1132 be formed in a different physical shape, for example by a depression, a pin-shaped element and the like.

For fixing the Einzellinse 1141 at the support 113 For example, an adhesive 1135 be provided. According to another embodiment, the fixation of a respective Einzellinse 1141 additionally or alternatively be accomplished by the Einzellinse 1141 is trapped in the support by means of the centering aids.

Support 113 may further be made of a material having a thermal conductivity greater than 5 W / (mK). Thus, with the support 113, a good heat dissipation can be achieved, which ensures safe and permanent operation of the light-generating assembly 11 can be beneficial.

For example, the support 113 made of aluminum, a ceramic or a high-temperature plastic, such as a plastic with glass fiber content.

With view on 9 and 10 It should be noted that there is a schematic support for illustrative purposes only 113 for a total of seven LEDs 112 So with seven single lenses 141 is shown. The number of recesses 1131 the support 113 However, according to one embodiment, it is identical (or substantially identical) to the number of LEDs 112 which, as stated above, may for example be greater than 20, greater than 50 or even greater than several hundred.

For example, a support 113 with 439 recesses 1131 proposed for the LED array according to the embodiment of 6 can be used. For example, this support may be 113 then automatically from a pick and place machine with 439 individual lenses 1141 be fitted. Such individual lenses 1141 For example, they can be fed to the machine in a belt, as is common for electronic components.

For example, the primary lens arrangement 114 be further provided with an anti-reflection layer, which can improve the light coupling. According to one embodiment, the placement of the support takes place first 113 with the single lenses 1141 and then the coupling of the primary lens assembly 114 assembly and support 113 to the carrier 111 on which the variety of LEDs 112 is arranged.

The primary lens arrangement 114 that the multiplicity of the individual lenses 1141 may be formed that of the LEDs 112 emitted light to receive and α in an emission angle (s. 1 ) in the range between 40 ° and 70 °. For example, the radiation angle is in the range between 45 ° and 65 °.

The above-described embodiments of a light-generating assembly for a headlamp include the following findings:

Headlamps intended for use in a film, studio, stage, event and / or theater environment should generally not only be stably constructed and have high luminous intensity and color rendering, but may also be required be that their light-emitting characteristic is variable in a wide range. For example, sliding reflectors, for example so-called free-form reflectors, and / or zoom and / or projection optics and / or in front of the headlight on tensioned screens or windows can be used for this purpose. Reflectors and optics usually have a so-called half-angle of about 5-60 °, which can be used for operation of the headlight in a so-called "spotlight" setting, while diffusers operate in the range of about 70-120 °, which is an operation of the headlamp can be used in a so-called "soft light" or "Flood" setting.

For certain applications, and also in the course of modularization of the production of headlamps, it may be useful to construct a base headlamp which contains all or at least almost all elements of a light-generating assembly and which is adapted to a selection of different light-shaping elements, for example different optics , Diffusers and the like, depending on the application to be coupled.

As has already been explained above, the light-generating assembly described here according to one or more embodiments can be configured such that it forms such a base headlight.

However, losses can occur by using a plurality of light-shaping elements in a headlamp. It may therefore be desirable to minimize such losses. This can be achieved, for example, by outputting the light-generating assembly, which for example forms the base headlight, with a precisely defined emission characteristic which is designed so that it functions optimally with the intended downstream optics.

To achieve the latter goal, according to one embodiment, said primary lens arrangement 114 be provided, which may be formed either in one piece (for example, according to the embodiment of 8th , eg as SoG array) or said plurality of individual lenses 1141 may have, as in the embodiments according to the 9 - 11 , The latter variant may have the advantage that the individual lenses 1141 individually on the LEDs 112 be adapted, for example, after an exchange of LEDs 112 or other changes in the characteristics of the LEDs 112.

Further, according to one or more embodiments, the light mixture may already be affected by the LED array having the plurality of LEDs 112 take place, for example, by the fact that at least three different types of LEDs, for example, at least three different LED color types, are used and the light generated by them through the primary lens assembly 114 is issued.

• - das mittels der Primärlinsenanordnung 114 eine vorteilhafte Abstrahlcharakteristik aufweist (beispielsweise für ein modulares Spotlight);
• - das für verschiedene LED-Bauformen geeignet ist bzw. anpassbar ist;
• - bei dem die LEDs 112 in einem regelmäßigen Raster angeordnet werden können; und
• - dessen LED-Anordnung eine sehr gute Farbmischung bei einer geringen Baugröße liefert.

One or more embodiments of the photogenerating assembly described herein 11 form a base headlamp module 2 out,

• - By means of the primary lens arrangement 114 has an advantageous emission characteristic (for example for a modular spotlight);
• - Which is suitable for various LED types or is adaptable;
• - where the LEDs 112 can be arranged in a regular grid; and
• - The LED arrangement provides a very good color mixing in a small size.

This basic headlamp module 2 can be used to form a headlamp 1 used, for example, together with a light-shaping optical module 2 as above with particular reference to the 1 has been executed.

Spatially local terms, such as "under," "below," "low," "above," "upper," "upstream," "downstream," and the like, are used to simplify the description of how to position the location of an element to explain to a second element. These terms are intended to include different orientations of the particular device in addition to orientations other than those depicted in the figures. Furthermore, terms such as "first", "second" and the like are also used to describe various elements, regions, portions, etc., and are also understood to be non-limiting. Similar terms refer to similar elements throughout the description.

As used herein, the terms "having," "containing," "including," "comprising," "having," and the like, are open-ended terms that indicate the presence of cited elements or features, but do not preclude additional elements or features. The articles "a / a" and "the" are to be understood as including the plural as well as the singular unless the context clearly indicates otherwise.

In view of the above range of variations and applications, it should be understood that the present invention is not limited by the foregoing description, nor is it limited by the accompanying drawings. Rather, the present invention is limited only by the following claims and their legal equivalents.

Claims (38)

A light-generating assembly (11) for a headlamp (1) for illuminating a film, studio, stage, event and / or theater environment, comprising an LED array comprising a support (111) and a front surface of the support (11). 111) having at least 20 LEDs (112) configured to be powered by a power source, wherein: - the LEDs (112) comprise LEDs (1121, 1122, 1123, 1124) of N different LEDs Types include where N is greater than or equal to three and a plurality of each LED type is provided; a plurality of power lines (1111, 1112, 1113) laid in the carrier (111) are provided for the power supply of the LEDs (112), the power lines comprising power lines of N different types of power lines, which are designed to supply the different LEDs Types of different currents to each other to lead; and - the LEDs (112) according to a regular grid on the front side of the carrier (111) are arranged, according to which: - on the front side of the carrier (111) a plurality of mutually overlap-free and arranged in a transverse spacing raster webs (4) is provided; - Provided for each grid (4) for feeding and discharging of at most N-1 within the respective grid path laid power line types at a grid line input (42) current inputs (421, 422) and at a raster path output (43) current outputs (431, 432) are; - Each grid track (4) comprises a plurality of grid locations (41), on each of which an LED (112) can be positioned, the grid locations (41) individually behind each other and in an equidistant longitudinal distance (d _hor , dH (LED)) to each other along a fictitious course of trajectory from grid grid entrance (42) to the grid path exit (43) are arranged; and - in each grid track (4) LEDs (112) of at most N-1 different types are provided. A light-generating assembly (11) for a headlamp (1) for illuminating a film, studio, stage, event and / or theater environment, comprising an LED array comprising a support (111) and a front surface of the support (11). 111) having at least 20 LEDs (112) configured to be powered by a power source, wherein: - the LEDs (112) comprise LEDs (1121, 1122, 1123, 1124) of N different LEDs Types include where N is greater than or equal to three and a plurality of each LED type is provided; - A plurality of power lines (1111, 1112, 1113) for powering the LEDs (112) is provided; and - the LEDs (112) are arranged on the front side of the carrier (111) according to a regular grid, according to which: - a plurality of raster webs (4) arranged without overlap and arranged at a transverse spacing on the front side of the carrier (111); - Each grid track (4) comprises a plurality of grid locations (41), on each of which an LED (112) is positionable, the grid locations (41) individually behind each other and in an equidistant longitudinal distance (d _hor , dH (LED)) to each other along a fictitious course of trajectory from grid grid entrance (42) to the grid path exit (43) are arranged; - For each raster track (4) for supplying and dissipation of within the respective grid path laid power lines to a grid line input (42) current inputs (421, 422) and at a raster path exit (43) current outputs (431, 432) are provided; and each of the raster trajectories (4) of the regular raster comprises a maximum number of different LED types resulting from an optimization rule for a highest LED packing density on the front side of the carrier (111). Assembly (11) after Claim 2 , wherein the optimization rule is satisfied only if a difference in magnitude between the equidistant longitudinal distance (d _hor , dH (LED)) and a distance (d _ver ) between two LEDs of two adjacent grid tracks (4) has a minimum. Assembly (11) according to one of the preceding claims, wherein within each grid track (4) LEDs (112) of the same type are connected in series with each other. Assembly (11) according to one of the preceding claims, wherein all grid locations (41) of all raster webs (4) are the same size. Assembly (11) according to any one of the preceding claims, wherein the grid locations (41) within a respective grid track (4) are not offset from each other in a direction perpendicular to the fictitious course course. Assembly (11) according to one of the preceding claims, wherein the grid tracks (4) with their grid locations (41) on the front side of the carrier (111) form a hexagonal tiling. An assembly (11) according to any one of the preceding claims, wherein the number of different LED types in each of at least 80% of the raster webs (4) is the same. Assembly (11) according to one of the preceding claims, wherein in an inner region of a respective web (4) which is delimited by at least one first raster parking space (41) and at least one last raster parking space (41) of the respective web (4), a maximum of n _COL = two different types of LEDs are provided. Assembly (11) according to one of the preceding claims, wherein the different LED types are different LED color types. An assembly (11) according to any one of the preceding claims, wherein all the LEDs (112) have an equal footprint that is less than or equal to the area of a respective grid location (41). An assembly (11) according to any one of the preceding claims, wherein the power lines (1111, 1112, 1113) are implemented as tracks. Assembly (11) after Claim 1 wherein each of the raster trajectories (4) of the regular raster comprises a maximum number of different LED types resulting from an optimization rule for a highest LED packing density on the front side of the carrier (111). Assembly (11) after Claim 13 , wherein the optimization rule is satisfied only if a difference in magnitude between the equidistant longitudinal distance (d _hor , dH (LED)) and a distance (d _ver ) between two LEDs of two adjacent grid tracks (4) has a minimum. Assembly (11) according to one of the preceding claims, wherein the transverse distance between the raster webs (4) is equidistant. Assembly (11) according to any one of the preceding claims, wherein the power lines (1111, 1112) within the respective grid track (4) are laid without crossing in a single layer of the carrier (111) that they are arranged horizontally and / or vertically offset from each other An assembly (11) according to any one of the preceding claims, wherein the LEDs (112) are followed by a reflector assembly (115) having a single reflector (1151) for each of the LEDs (112). An assembly (11) according to any one of the preceding claims, wherein the LEDs (112) are located downstream of a primary lens assembly (114) at a distance of less than 1 cm. Assembly (11) after Claim 18 in that the assembly (11) forms a base headlight module (2) designed to further form the headlight (1) for coupling to an optical module (3) receiving and outputting the light output from the primary lens assembly (114) is. Assembly (11) after Claim 18 or 19 wherein the primary lens assembly (114) is integrally formed. Assembly (11) according to one of the preceding Claims 18 to 20 in that the primary lens arrangement (114) comprises either at least one single lens (1141) for each of the LEDs (112) or only a single lens for all the LEDs (112). A light-generating assembly (11) for a headlamp (1) for illuminating a film, studio, stage, event and / or theater environment, comprising an LED array comprising a support (111) and a front surface of the support (11). 111) having at least 20 LEDs (112) adapted to be powered by a power source and a primary array of LEDs (114) downstream of the LED array, wherein: - The primary lens assembly (114) for each LED (112) has a single lens (1141), which is positioned at a distance of less than 1 cm to the respective LED (112), wherein the individual lenses are arranged separately. Assembly (11) after Claim 22 wherein the primary lens arrangement (114) is coupled to the carrier (111) via a support (113). Assembly (11) after Claim 23 in that the support (113) has a multiplicity of identically sized recesses (1131) into which the individual LEDs (112) protrude and over which the individual lenses (1141) of the primary lens arrangement (114) are placed. Assembly (11) after Claim 23 or 24 , wherein the support (113) is made as a milled part or as an injection molded part. Assembly (11) according to one of Claims 23 to 25 wherein the support (113) for each of the recesses (1131) on a side facing away from the LEDs (112) has a respective physically formed centering aid (1132), wherein a respective centering aid (1132) limits the space for a single lens (1141). Assembly (11) according to one of Claims 23 to 26 wherein the support (113) is made of a material having a thermal conductivity greater than 5 W / (mK). Assembly (11) according to one of Claims 22 to 27 wherein the single lenses (1141) are each configured as single glass lenses or single plastic lenses or single silicone lenses. Assembly (11) according to one of Claims 18 to 28 in that the primary lens arrangement (114) is designed to receive the light emitted by the LEDs (112) and to output it at a radiation angle in the range between 40 ° and 70 °. An assembly (11) according to any one of the preceding claims, wherein the LEDs (112) each comprise an LED housing. An assembly (11) according to any one of the preceding claims, wherein the LEDs (112) are each implemented as one of the following: - Light emitting diode, for example as a chip-scale package LED, as a flip-chip LED, or as a micro footprint LED; - Organic light emitting diode; - Resonant Cavity LED; or - Laser diodes. An assembly (11) according to any one of the preceding claims, wherein the support (111) is implemented as a single-layer printed circuit board. An assembly (11) according to any one of the preceding claims, wherein the LEDs (112) are arranged at a density of at least 8 LEDs / cm ² on the front side of the carrier (111). Assembly (11) according to one of the preceding claims, wherein the maximum distance between two mutually adjacent LEDs (112) is 3.5 mm. A headlamp (1) for illuminating a film, studio, stage, event and / or theater environment, comprising a light-generating assembly (11) designed according to any one of the preceding claims. Headlight (1) for illuminating a film, studio, stage, event and / or theater environment, comprising a light-generating assembly (11) according to claims 1 or 2 and according to claims Claim 22 is designed. Headlight (1) to Claim 35 or 36 further comprising a light-shaping optical module (3) disposed downstream of the light-generating assembly (11), the optical module (3) comprising at least one of the following: a field lens; a Fresnel lens; - a diffuser; - a diffuser; - prism; a reflector; a component for light mixing; - A component for color mixing. Headlight after Claim 37 wherein the headlamp (1) is of modular construction, such that - the light-generating assembly (11) with the primary lens arrangement (114) forms a base headlamp module (2); and - the light-shaping optical module (3) is selected from a set of different optical modules, each of which is adapted to be coupled to the base headlamp module (2).

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