CN110945402A

CN110945402A - Optical module for a radiation device, radiation device and use of an optical monoblock

Info

Publication number: CN110945402A
Application number: CN201880048835.0A
Authority: CN
Inventors: 丹尼斯·奥什; 迈克尔·德格尔
Original assignee: Jenoptik Optical Systems GmbH
Current assignee: Jenoptik Optical Systems GmbH
Priority date: 2017-06-23
Filing date: 2018-06-22
Publication date: 2020-03-31
Also published as: WO2018234531A1; EP3642658A1; DE102018115045A1

Abstract

A light module (100) for a radiation device, the light module comprising at least one light source (102) and at least one projection device (112) formed for imaging light (106) emitted from the light source (102) into an area in front of the radiation device with at least one light distribution (108). The projection device (104) has an entry optics (110), a projection optics (112) and an exit optics (114), wherein the projection optics (112) is arranged in the beam path between the entry optics (110) and the exit optics (114) and is designed to modulate an image onto a light beam (120). The entry optics (110) and/or the exit optics (114) comprise an optical monolithic body with at least one free face.

Description

Optical module for a radiation device, radiation device and use of an optical monoblock

Technical Field

The invention relates to an optical module for a radiation device, the use of an optical module, and the use of an optical monoblock (Monolithen).

Background

Light modules, which are used, for example, in vehicles or for illuminating streets or rooms, often have a plurality of optical elements which have to be calibrated with high effort.

Disclosure of Invention

The object of the present invention is to create an improved light module for a radiation device, an improved radiation device, and the use of an optical monoblock.

This object is achieved by the use of a light module, a radiation device and an optical monoblock according to the main claims.

Advantageously, the projection device of a light module can be realized using an optical monoblock, wherein the optical monoblock has at least one free facet.

The light module may be used for a lighting unit and/or an imaging unit. The optical module can be configured by suitable, simplified optics in such a way that the number of optical boundary surfaces is reduced and assembly and alignment costs are also reduced. At the same time, the illumination unit paired with the projection unit can thus be exploited as a new field of application. The optical path can be folded in such a way that the optically effective area is thereby kept small. This can be achieved by a light module (also referred to as projection light module) comprising at least one free facet realized by at least one optical monoblock.

A corresponding light module for a radiation device comprises at least one light source and at least one projection device, which can image light emitted from the light source into an area in front of the radiation device with at least one light distribution. The projection device has an entry optics, a projection optics and an exit optics. The projection optics are arranged in the optical path between the entry optics and the exit optics and are designed to modulate an image onto a light beam. The entry optics and/or the exit optics comprise an optical monolithic block with at least one free facet.

At least one light module can also be integrated in the radiation device, which directly emits the light of the further light source without modulating the image. The radiation device is formed, for example, as a lamp, a headlight, a display screen or a headlight. The light source comprises, for example, at least one light emitting diode, a laser, a halogen lamp or another suitable means for emitting light. The projection device may be shaped for generating a light distribution using the light of the light source, which light distribution is visible, for example, to an observer in the area illuminated by the radiation device. The light distribution may image an image modulated onto the light of the light source by the projection optics. For this purpose, the projection optics may be designed for modulating the image using a suitable modulation method. The projection optics can be designed, for example, for reflecting the light of the light source either into or out of the light path to the exit optics, if a movable optics assembly is used. To this end, an image in the form of a digital image or a control signal representing the digital image may be provided to the projection optics and modulated onto the light beam by the projection optics. An optical monolith can be understood as a matrix formed by refractive structuring elements, which matrix has a plurality of functional facets. Light may be input into the monolith, for example, through a first refractive surface, reflected at a second refractive surface, and output from the monolith through the second refractive surface. The entry optics may be shaped as the optical monolith or may comprise at least one further element, for example a further optical element, in addition to the optical monolith. Correspondingly, the exit optics may be shaped as the optical monolith or may comprise at least one further element, for example a further optical element, in addition to the optical monolith.

Advantageously, instead of a multi-lens system, an optical member in the form of a single block may be used. For example, applications relate to projection technology based on so-called digital light processing systems for HD matrix headlights (high resolution headlights). The assembly process and the calibration process can be reduced compared to a multi-lens system. Alternative optical and mechanical designs can also be achieved by designing the single block as an innovative optical construction unit. Advantageously, in contrast to multi-lens optical systems, it is not necessary to align the lenses with one another in a very costly alignment process in such a way that the preset "ideal" imaging is achieved as accurately as possible. This calibration procedure, which is now avoidable, is very long lasting on the one hand and very expensive on the other hand.

The monoliths used (for example in the form of monolithic construction units, in which the optical elements do not have to be calibrated to one another) make it possible to carry out calibration processes without the imaging system and therefore also without calibration costs. Furthermore, these components can be kept small throughout the system.

According to one embodiment, the optical monoblock may have two aspheric surfaces and one free surface. Light can be input into and output from the monolith through the non-spherical surfaces. The free face can be used to reflect light inside the monolith. Such a monobloc can be realized very cost-effectively.

Alternatively, the optical monolith may have two aspheric surfaces and two free facets. The two free facets may cause light to be reflected twice in the monolith. This provides, for example, the possibility of an expansion of the radiation direction of the light. Optical monoliths having more than two free faces may also be used.

An optical element may be arranged in the optical path. The optical element may be arranged, for example, in a section of the input side of the optical path. Additionally or alternatively, the optical element or a further optical element may be arranged in a section of the light path on the output side. Corresponding optical elements may also be integrated in the projection optics. The optical element can be used to optimize the beam profile inside the projection device. According to one embodiment, the optical element is shaped and arranged such that it is located in the optical path of the input side and the output side with respect to the projection optics.

The light module may comprise at least one further entry optic and additionally or alternatively at least one further exit optic. The corresponding optical device may comprise a further optical monoblock. A plurality of optical monoliths may also be arranged in series.

The light module may comprise a control device, which may be designed for controlling a function of the light module and/or the projection device. The control means may enable an operator to operate the light module and additionally or alternatively operate the projection means. The control device can, for example, be designed to define an image which is modulated onto the light beam and to control the modulation process, for example using a control signal.

The control device may have an interface to the environment detection device and be designed for controlling a control signal for controlling a function of the light module and/or the projection device in response to an environment signal received via the interface. The environment detection means may be, for example, a camera or a grating. The light module can be activated in this way, for example, when an object approaches an area that can be illuminated by the radiation device, or the digital image modulated onto the light beam using the control signal can be selected depending on the situation detected using the environment detection device.

A plurality of uses of the so-called optical module can be realized. Thus, the light module may be used for the front and/or rear lights of a vehicle (e.g. a motor vehicle, a rail vehicle, a water vehicle or an aircraft). The light module may also be used for interior lighting or display screens in the interior space of a vehicle. In addition to use in vehicles, use is also possible, for example in headlights, street lights, traffic lights, interior headlights or stadium headlights.

Thus, the use of an optical monolith having at least one free facet may also be generally used to image light emitted from a light source with at least one light distribution.

Drawings

The invention is described in detail below by way of example with the aid of the accompanying drawings. In the drawings:

fig. 1 shows a schematic illustration of a light module according to an embodiment;

fig. 2 shows a schematic illustration of a light module according to an embodiment;

fig. 3 shows a schematic illustration of exit optics according to an embodiment;

fig. 4 shows a schematic illustration of exit optics according to an embodiment;

fig. 5 shows a schematic illustration of a radiation device according to an embodiment; and

fig. 6 shows schematic representations of different uses of a radiation device according to an embodiment.

Detailed Description

In the following description of the preferred embodiments of the present invention, the same or similar reference numerals are used for elements shown in different drawings and functioning similarly, and a repetitive description of these elements is omitted.

Fig. 1 shows a schematic illustration of a light module 100 according to an embodiment. The light module 100 may be applied to a radiation device of a vehicle (e.g., a headlight), or to a street lamp, for example.

The light module 100 includes a light source 102 and a projection device 104. The light source 102 is designed for emitting light, in particular light 106 in the visible range. The light source 102 can generally be understood as a lighting device, for example at least one LED. The projection device 104 is designed for generating and emitting a light distribution 108 using light 106. The projection device 104 is designed, for example, to project the light distribution 108 onto a surface illuminated by the radiation device and thus to make an image imaged by the light distribution 108 appear on the surface to an observer. The light distribution 108 may thus be understood as a bundle of light beams or alternatively as a moved light beam.

The projection device 104 has entrance optics 110, projection optics 112, and exit optics 114. The entry optics 110 are formed as an input interface via which the light 106 of the light source can be input into the projection device 104. The exit optics 114 are formed as an output interface via which the light distribution 108 can be output from the projection device 104. The projection optics 112 are arranged here in an optical path extending from the entry optics 110 to the exit optics 114, wherein a section 116 of the input side of the optical path extends from the entry optics 110 to the projection optics 112 and a section 118 of the output side of the optical path extends from the projection optics 112 to the exit optics 114.

The entry optics 110 are designed to deflect the input light 106 along a section 116 of the input side of the light path to the projection optics 112. The projection optics 112 are designed for modulating a digital image onto a light beam 120, which is schematically shown here. According to this embodiment, the light beam 120 is light or a portion of light directed from the entrance optics 110 to the projection optics 112 along the section 116 of the input side of the optical path. For modulating the image, the projection optics 112 have at least one movable mirror 122 according to this embodiment. The mirror 122 is movable at an angle 124. If the mirror 122 is in the first position (here the left position), the light beam 120 is deflected according to one embodiment from the section 116 on the input side of the light path to the section 118 on the output side of the light path as far as the exit optics 114. If the mirror 122 is in the second position (here the right-hand position), the light beam 120 is deflected out of the section 116 on the input side of the light path from the section 118 on the output side of the light path and therefore does not touch the exit optics 114. Therefore, an image is optically generated in the beam path of the projection device 104. For moving the mirror 122, for example, a control signal of a control device is used. The mirror 122 may represent, in a representative manner, a mirror assembly formed by a plurality of mirrors, in particular by a plurality of micromirrors. The projection optics 112 are embodied, for example, as a so-called DLP (Digital Light Processing) Device or as a DMD (Digital Micromirror Device) Device.

According to different embodiments, the entrance optics 110 or the exit optics 114 are either implemented as an optical monolithic block or comprise such an optical monolithic block. Alternatively, the entry optics 110 and the exit optics 114 are each implemented as an optical monolith, or each comprise such an optical monolith. The optical monolith here accordingly comprises at least one free surface, at which light within the monolith can be reflected. Optionally, the entrance face is also (refractively/refractively) free-form.

According to an embodiment, the light module 100 may comprise at least one further entrance optics 110 and additionally or alternatively at least one further exit optics 114.

The light module 100 is used, for example, in an illumination and/or imaging beam path, as it is used, for example, in motor vehicle headlights, motor vehicle interiors and/or motor vehicle backlights, or, for example, in lighting lamps for illuminating streets, squares, stadiums or interiors, or as machine lights or interior lighting lamps of machine buildings. The light module 100 comprises at least one light source 102 and at least one projection device 104 which projects light 106 emitted from the at least one light source 102 into an area in front of, behind and/or inside the motor vehicle or projects light emitted by an illumination lamp onto a surface such as a lane, or a runway surface of a stadium, or a floor of a warehouse of a sports facility or a floor in a machine building or storage warehouse. To this end, the light is imaged with at least one light distribution 108. The projection device 104 comprises an entry optic 110, an exit optic 114, which in turn may have one, two or more exit optics.

The optical module 100 is designed with suitable, simplified optics such that the number of optical boundary surfaces is kept small and the assembly and alignment effort is also low. At the same time, the illumination unit paired with the projection unit can thus be exploited as a new field of application.

The beam path is folded in the projection device 104 in such a way that the optically effective area is kept small thereby. This is achieved by a light module 100 (also referred to as a projection light module) comprising at least one free facet realized by at least one optical monoblock.

Thus, a light module 100 for a radiation device comprises at least one light source 102 and at least one projection device 104 which can image light 106 emitted from the light source 102 with at least one light distribution 108 into an area in front of the radiation device. Here, according to an embodiment, the projection device 104 includes: an entrance optic 110 having one, two, or more entrance optics; projection optics 112 that modulate the digital image onto a light beam 120; and exit optics 114 having one, two, or more exit optics. Here, at least one optical monolithic having at least one free-form optical component is integrated into the entry optics 110 and/or the exit optics 114.

In accordance with one embodiment, a simplified implementation of a light module 100 is illustrated in FIG. 1, where the exit optics 114 is an optical monolithic block. The optical monoblock is configured such that the imaging quality, which is necessary due to the conventionally known lens system of the imaging optics, meets the requirements. The single piece may be formed of glass or plastic. In a preferred embodiment, the single piece is a PMMA plastic. The plastic can be specially designed in a manner corresponding to the purpose of application. Depending on the purpose, the monoblock may be fixed or may also be movable (e.g. tilted, turned, rotated, etc.), for example to compensate for adaptations such as spacing to the projection surface, etc. Such measures enabling colored representation of the projected image projected by the light distribution 108 may also be integrated into the optical path.

In one embodiment, the entry optic 110 and exit optic 114 are characterized by the use of at least one monolithic optic, preferably having a free-form optic or free-form optics.

In a particular embodiment, the entry optics 110 and the exit optics 114 are each provided with at least one optical monolithic block.

The single piece may be, for example, input optics 110 formed of glass and/or output optics 114 formed of plastic. These individual pieces allow mass production in a cost-effective manner by injection molding.

Fig. 2 shows a schematic illustration of a light module 100 according to an embodiment. The light module 100 corresponds to the light module described with the aid of fig. 1, with the difference that the light module shown has an optical element 230. According to this embodiment, the optical element 230 is arranged in the section 116 on the input side of the optical path and in the section 118 on the output side of the optical path. Alternatively, the corresponding optical element is arranged only in the section 116 on the input side of the optical path or only in the section 118 on the output side of the optical path. Alternatively, the corresponding first optical element is arranged in a section 116 on the input side of the optical path and the corresponding second optical element is arranged in a section 118 on the output side of the optical path. According to one embodiment, the corresponding optical elements or functionalities thereof are integrated into the input optics 110 or the output optics 114.

Fig. 3 thus shows a simplified representation of the beam profile, as has been illustrated with reference to fig. 1, according to an embodiment, wherein, however, suitable optical elements are arranged for optimizing the beam profile, which optical elements can be located in the beam path of the projection optics 112 and/or of the imaging optics (in front of the exit optics 114). According to one embodiment, the optical element 230 in the form of a field lens is arranged such that it is located in two optical paths. In this way, the beam profile is influenced in a targeted manner. Thus, for example, the pupil of the illumination device or of the entrance optics can be imaged on the pupil of the exit optics 114 by means of a suitable field lens. Thus, the size of the exit optics 114 can be kept small without losing light or beam intensity here.

An optional control device 232 is shown purely schematically in fig. 2, which is designed to provide an interface on the projection optics 112 with a control signal 234 for controlling the projection optics 112. The control means 232 are for example designed for providing a control signal 234 in case a digital image is used, so that the mirror 122 is moved such that an image corresponding to the digital image is modulated into the light beam 120 and thus the light distribution 108 is imaged as an image corresponding to the digital image.

According to one embodiment, the control device 232 has an interface to an environment detection device 236. The environment detection means 236 is designed for monitoring the environment of the light module 100, in particular the area to which the light distribution 108 is directed. For example, the environment detection device 236 is designed to identify a person approaching the area and to provide an environment signal 238 to the control device 232 via the interface in response to the identification of the approaching person. The control means 232 are designed to provide a control signal 234 in the case of use of the ambient signal 238. The control device 232 is designed, for example, to select a digital image, which is modulated onto the light beam 120, in a manner dependent on the ambient signal 238. The environment detection device 236 may be arranged in a manner separated from a part of the light module 100, a part of the radiation device, or locally from the radiation device.

Fig. 3 shows a schematic illustration of the exit optics 114 according to an embodiment. The exit optics 114 for the light module can be mentioned here, as is shown with the aid of fig. 1 or fig. 2. Downstream of the projection optics 112, an exit optics 114 is connected, as described for example with reference to fig. 1.

Exit optic 114 includes an optical monolith 340 having an aspherical first face 342, an aspherical second face 344, and a free face 346.

Fig. 3 shows an exit optic 114 formed from a monolithic block 340 formed from a PMMA lens having two

aspheric faces

342, 344 and one free face 346, according to one embodiment.

According to one embodiment, face 342 is realized as an entrance face in the form of a further free-form face, and additionally or alternatively face 344 is realized as an exit face in the form of a further free-form face.

Fig. 4 shows a schematic illustration of the exit optics 114 according to an embodiment. In this case, the exit optics 114 for the light module can be provided, as is shown with the aid of fig. 1 or fig. 2. Downstream of the projection optics 112, an exit optics 114 is connected, as described for example with reference to fig. 1.

The exit optic 114 includes an optical monolith 340 having a first aspheric surface 342, a second aspheric surface 344, a first free surface 346, and a second free surface 446.

According to one embodiment, the exit optics 114 is shaped from a single block 340 formed from a PMMA lens having two

aspheric faces

342, 344 and two free-form faces 346, 446. By this embodiment, it is possible to replace the multi-lens system with the exit optics 114, wherein the projection sensor is shown by way of example, and possible beam guidance at an angle of 90 degrees is possible.

According to one embodiment, the exit optics 114 comprise a monolithic objective lens in the form of a monolith 340 as a central construction element. The base of the individual piece 340 is formed here by a refractive construction element having a plurality of

functional surfaces

342, 344, 346, 446. In the example detailed here, four

functional surfaces

342, 344, 346, 446 are involved. Light is input into the monoblock 340 through the first light-folding face 342 and then reflected at the

faces

346, 446. And finally outputs the light through the second refraction surface 344. By the functional configuration of the four faces 342, 344, 346, 446, a system with high imaging quality can be designed.

The area between the light source 102 and the projection optics 112 is also referred to as the illumination path, and the area connected to the projection optics 112 and comprising the monoblock 340 is also referred to as the imaging path.

Thus, the light 106 can be imaged with the light distribution 108 if the optical monolith 340 is used.

Fig. 5 shows a schematic illustration of a radiation device 500 in the form of a street lamp according to an embodiment. The radiation device 500 has a light module 100, which is also referred to as a projection module. The light module 100 is designed to emit a light distribution 108, by means of which a beam trace (stratlabdrive) 508 is projected onto a surface 560. Optionally, the radiation device 500 also has a first and a second

light module

562, 564, which are designed for illuminating at least one region of the face 560 adjoining the beam trace 508. The

light emitting modules

562, 564 may also be referred to as lighting modules or lighting units. The light-emitting

modules

562, 564 can each have a light source whose light is emitted directly (i.e. without projection optics and, where appropriate, without exit optics) by the radiation device 500.

Fig. 5 thus shows an example of a street light, according to one embodiment, in which a light module 100 for projecting an image in the form of a beam trace 508, and at least one light emitting

module

562, 564 are integrated. The combined light emitting module and light module can also be realized in a unit which is mutually adjusted by means of at least one control device in the form of a control unit, such as a movement control unit, a light control unit, a projection surface observation unit, etc. Here, the

light modules

562, 564 illuminating the surface 560 to be illuminated can be configured to be switched on and off. Further, to project images and/or information onto surface 560, light module 100 can be configured to be on and off. In this example, the light module 100 can identify the projection surface on which the light distribution 108 is projected as a crosswalk in the dark by the beam trace 508 and turn on temporarily or as needed at certain times. A colored illustration of the beam trace 508 (e.g., for the green phase) is possible.

For such applications, for example in storage warehouses for projecting hazards (for example fork trucks coming behind the shelves), it is therefore possible to project information into further aisles of the warehouse. In this case, a symbolic or colored configuration can be realized. The size of the projection optics can also be minimized here by using suitable optical elements, such as the optical element 230 described with reference to fig. 2. By means of the movable (e.g. rotatable, tiltable, pivotable) configuration of the light module 100 and/or of the

light modules

562, 564 or, where appropriate, of the integrated or separate radiation device 500 in the form of a lighting system, imaging and/or information can be positioned very specifically on a very limited projection surface. This may be necessary, for example, in order to illuminate a road or the ground in a concomitant manner for a person or a group of persons. In this case, a signal is sent by the environment detection device (for example by a camera or a light barrier) to the light module 100, which temporarily illuminates or projects on a defined ground or a certain road section by means of at least one control device.

In the case of larger projection surfaces, it can be expedient to couple a plurality of beam sources or projection systems (i.e. for example a plurality of light modules 100) to one another in order to project optimal illumination or to project information in a targeted manner.

The described solution can be applied in general to lighting lamps, traffic lights, indoor lighting lamps or stadium lighting lamps, corresponding to street lamps.

Thus, a lighting device with at least one light module 100 can be realized, which is also suitable for use in, for example, a vehicle headlight, a backlight or a display screen in the interior space of a vehicle or an interior lighting device.

The projection means of the light module can also be used in an optics unit, such as a street lamp, for example, in order to project information in the form of images or text onto a surface, such as a lane of a street.

Thus, information can be transmitted to the vehicle driver or the pedestrian in a targeted manner, for example by temporarily projecting a crosswalk onto a roadway, or coloring the intersection with the color of a traffic light, or carrying out danger indications, speed limits or other traffic information or evacuation devices.

In one embodiment, for generating a light distribution (as it is understood to be a light distribution produced according to the relevant standard), at least one projection technique is arranged between the entrance optics and the exit optics according to the UN/ECE regulatory standards of the countries of the european union or the relevant standards of other regions of the world. The projection technique implemented by the projection optics is a technique for producing an image by modulating a digital image onto a light beam.

Fig. 6 shows a schematic illustration of different uses of a radiation device 500 according to an embodiment. The radiation device 500 accordingly has a light module, as described with the aid of the above-described figures. The radiation device 500 may be used, for example, in combination with: headlights 601, rear lights 603, interior lighting 605, display 607, street lights 611, traffic lights 613 of the vehicle 609, or also interior lighting, stadium lighting, machine lighting or machine shop interior lighting.

In a particular embodiment, the radiation device 500 may furthermore be combined with an optical unit having at least one fresnel optics. In this case, an optical unit with at least one fresnel optic on the light input side and an associated at least one optical unit formed by one or more aspherical lenses are mounted behind the radiation device 500 (not shown in the figures). These optical units ideally constitute a compact unit.

The aspherical lens/lenses are preferably equipped in this case in a honeycomb-like embodiment, for example, with definable hexagonal optics/lenses. It is thereby possible that the information and/or the image to be projected can be changed in addition. Accordingly, the size and chromaticity of the image can be changed or a filter function can be performed. These projected edges are imaged more clearly in an advantageous manner. By means of the control unit, these functions can be specifically influenced and adapted to requirements and to the external environment, such as the creation of projection surfaces, weather influences, stray light effects.

Claims

1. A light module (100) for a radiation device (500), comprising at least one light source (102) and at least one projection device (112) which is shaped for imaging light (106) emitted from the light source (102) in the form of at least one light distribution (108) into an area in front of the radiation device (500), wherein the projection device (104) has an entry optic (110), a projection optic (112) and an exit optic (114), wherein the projection optic (112) is arranged in the light path between the entry optic (110) and the exit optic (114) and is designed for modulating an image onto a light beam (120), characterized in that the entry optic (110) and/or the exit optic (114) comprises a lens with at least one freeform face (342), 344, 346; 446) the optical monolith (340).

2. The light module (100) for a radiation device (500) according to claim 1, characterized in that the optical monoblock (340) has two non-spherical faces (342, 344) and a free face (346).

3. A light module (100) for a radiation device (500) according to claim 1, characterized in that the optical monoblock (340) has two non-spherical faces (342, 344) and two free faces (346; 446).

4. The light module (100) for a radiation device (500) according to at least one of the preceding claims, characterized in that an optical element (230) is arranged in a section (116) on the input side of the light path and/or in a section (118) on the output side of the light path.

5. The light module (100) for a radiation device (500) according to at least one of the preceding claims, characterized in that the light module (100) comprises at least one further entry optics and/or at least one further exit optics.

6. Light module (100) for a radiation device (500) according to at least one of the preceding claims, characterized in that the light module (100) comprises a control device (232) which can be designed for controlling the function of the light module (100) and/or the projection device (104).

7. Light module (100) for a radiation device (500) according to claim 6, characterized in that the control device (232) has an interface to an environment detection device (236) and is designed for controlling a control signal (234) for controlling a function of the light module (100) and/or the projection device (104) in response to an environment signal (238) received via the interface.

8. Light module (100) for a radiation device (500) according to at least one of the preceding claims, characterized in that an optical unit formed by at least one fresnel optics and at least one non-spherical lens is mounted behind the radiation device (500).

9. Use of a light module (100) according to one of claims 1 to 8 in a headlight (601) and/or a backlight (603) of a vehicle (609).

10. Use of a light module (100) according to one of claims 1 to 8 in an interior lighting (605) or a display screen (607) in an interior space of a vehicle (609).

11. Use of a light module (100) according to one of claims 1 to 8 in a lamp, a street light (611), a traffic signal light (613), an indoor lighting lamp or a stadium lighting lamp.

12. Use of an optical monolith (340) having at least one free face (342, 344, 346; 446) for imaging light (106) emitted from a light source (102) with at least one light distribution (108).

13. A radiating device (500) with a light module (100) according to one of claims 1 to 8, in particular a front light (601) or a rear light (603) or an interior lighting device (605) or a display screen (607) of a vehicle (609), a street light (611), a traffic light (613), an interior lighting lamp, a stadium lighting lamp, a machine lighting lamp or a machine shop lighting lamp.