Method for optimizing the operation and controlling a deflection unit - Patents.com

Abstract

To provide a method capable of optimizing operation of an irradiation module.SOLUTION: The invention is related to a method for operation-optimized control of a deflection unit 2 for an irradiation module 1, in which method, a native resolution of the irradiation module 1 can be visually increased by the deflection unit 2, and which method includes the steps of: a) receiving a target operation signal, the target operation signal having to include information on at least one of the following: target energy efficiency; target temperature; target image resolution; target image sharpness; target clarity; and offset correction; and b) manipulating a control variable of the deflection unit 2 depending on the target operation signal, both a deflection range and temporal passage being performed by the deflection unit 2 depending on the control variable and at least two of the following aspects preset by the control variable, being operated in size and / or time length: amplitude; a zero position; a temporal change rate; a signal basic form; and a time length between the zero position passes.SELECTED DRAWING: Figure 1b

Description

[Technical Field]

[0001] (Related Application Description) This application claims priority from European Patent Application No. 22216977.3 (DAS access code: 6574), filed December 28, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a method for optimizing the operation and controlling a deflection unit for an illumination module, the illumination module being configured to emit a segmented light distribution. [Background technology]

[0003] From the prior art, methods are known for controlling motor vehicle lighting modules, which allow the light emission of individual segments of a light distribution to be varied in time. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] European Patent Application Publication No. 3002631 [Patent Document 2] U.S. Patent Application Publication No. 2014 / 293247 [Patent Document 3] U.S. Patent Application Publication No. 2022 / 400238 [Patent Document 4] Patent Publication No. 2019-053128 [Patent Document 5] U.S. Patent Application Publication No. 2018 / 095269 Summary of the Invention [Problem to be solved by the invention]

[0005] To improve light emission, up until now, components of the relevant illumination module have been modified, for example by using components that allow for higher resolution, improved contrast, increased light intensity, increased efficiency, etc.

[0006] The object of the invention is to provide a method by which the operation of an illumination module can be optimized. [Means for solving the problem]

[0007] In a first aspect, the problem is solved by recognizing that a purpose-dependent variable control of a deflection unit offers the possibility of optimizing the operation of an illumination module, and in a second aspect, the problem is solved by providing certain technical features and method steps, in that the illumination module comprises a deflection unit, and by means of the deflection unit, the intrinsic resolution of the illumination module can be visually increased by at least temporary light beam deflection by means of the deflection unit, wherein the method comprises the following steps: a) receiving a target operational signal, wherein the target operational signal includes information regarding at least one of the following criteria: target energy efficiency; target temperature; target image resolution; target image sharpness; target purity; offset correction; b) A step of manipulating the control variable of the deflection unit depending on the target operating signal, whereby both the range of deflection and the time course are carried out by the deflection unit depending on the control variable, and wherein at least two of the following aspects of the deflection preset by the control variable are manipulated in magnitude (or height) and / or time length (or duration): amplitude; zero position; time rate of change; signal basic shape; time length between zero position crossings.

[0008] That is, according to the first aspect of the present invention, 1. A method for optimizing the operation and controlling a deflection unit for an illumination module, comprising: The illumination module is configured to emit a segmented light distribution, the illumination module includes a deflection unit, and by means of the deflection unit, the intrinsic resolution of the illumination module can be visually increased by at least temporary light beam deflection by means of the deflection unit, the method comprising the following steps: a) receiving a target operational signal, wherein the target operational signal includes information regarding at least one of the following criteria: target energy efficiency; target temperature; target image resolution; target image sharpness; target purity; offset correction; b) manipulating a control variable of the deflection unit in dependence on the target operating signal, wherein both the range of deflection and the time course are effected by the deflection unit in dependence on the control variable, wherein at least two of the following aspects of deflection preset by the control variable are manipulated in magnitude and / or time length: amplitude; zero position; time rate of change; time length between zero position crossings; A method is provided that includes: More specifically, in the first aspect, 1. A method for optimizing the operation and controlling a deflection unit for an illumination module, comprising: The illumination module is configured to emit a segmented light distribution, the illumination module includes a deflection unit, and by means of the deflection unit, the intrinsic resolution of the illumination module can be visually increased by at least temporary light beam deflection by means of the deflection unit, the method comprising the following steps: a) receiving a target operational signal, wherein the target operational signal includes information regarding at least one of the following criteria: target energy efficiency; target temperature; target image resolution; target image sharpness; target purity; offset correction; b) manipulating a control variable of the deflection unit in dependence on the target operating signal, wherein both the range of deflection and the time course are effected by the deflection unit in dependence on the control variable, wherein at least two of the following aspects of deflection preset by the control variable are manipulated in magnitude and / or time length: amplitude; zero position; time rate of change; time length between zero position crossings; - manipulating the time length between zero-position crossings in order to achieve the target temperature derived from the target operating signal according to step a), and in such a way that the time length between zero-position crossings is increased if the actual temperature of the deflection unit or the irradiation module is above the target temperature; It is characterized by: Further, according to a second aspect of the present invention, 1. An illumination module for an automotive lamp, comprising: the illumination module is configured to emit a segmented light distribution, the illumination module includes a deflection unit, by means of which a visually perceptible resolution of the light distribution generated by the illumination module can be increased compared to an intrinsic light distribution of the illumination module, and the illumination module is configured to perform the method according to the first aspect; An illumination module is provided, characterized in that: It should be noted that the reference numerals used in the claims of this application are intended solely to facilitate understanding of the present invention and are not intended to limit the present invention to the illustrated forms. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present invention can have the following configurations. (Form 1) 1. A method for optimizing the operation and controlling a deflection unit for an illumination module, comprising: The illumination module is configured to emit a segmented light distribution, the illumination module includes a deflection unit, and by means of the deflection unit, the intrinsic resolution of the illumination module can be visually increased by at least temporary light beam deflection by means of the deflection unit, the method comprising the following steps: a) receiving a target operational signal, wherein the target operational signal includes information regarding at least one of the following criteria: target energy efficiency; target temperature; target image resolution; target image sharpness; target purity; offset correction; b) A step of manipulating the control variable of the deflection unit depending on the target operating signal, wherein both the range of deflection and the time course are carried out by the deflection unit depending on the control variable, and wherein at least two of the following aspects of deflection preset by the control variable are manipulated in magnitude and / or time length: amplitude; zero position; time rate of change; time length between zero position crossings. (Form 2) In the method described in form 1, it is preferable that the time length between zero position crossings is manipulated to achieve the target energy efficiency derived from the target operating signal in accordance with step a), and that if the actual energy efficiency of the deflection unit is lower than the target energy efficiency, the time length between zero position crossings is manipulated so that the time length between zero position crossings is increased. (Form 3) In the method according to aspect 2, it is preferable that the target energy efficiency is preset such that it is determined depending on the detected driving speed of a vehicle including the illumination module together with the deflection unit, and that the required target energy efficiency increases as the vehicle speed decreases. (Form 4) In the method according to any one of the aspects 1 to 3, it is preferred that the time length between zero position crossings is manipulated in order to achieve the target temperature derived from the target operating signal in accordance with step a), and that the time length between zero position crossings is manipulated so that if the actual temperature of the deflection unit or the irradiation module exceeds the target temperature, the time length between zero position crossings is increased. (Form 5) In the method according to any one of the first to fourth aspects, it is preferable that the amplitude of the deflection is manipulated to achieve the target image clarity derived from the target operating signal in accordance with step a), and that the amplitude of the deflection is manipulated so that at the preset maximum clarity, the maximum amplitude is preset and the amplitude is decreased as the target image clarity decreases. (Form 6) In the method according to any one of aspects 1 to 5, it is preferable that the amplitude of the deflection is manipulated to achieve the target image resolution derived from the target operating signal in accordance with step a), and that the amplitude of the deflection is manipulated so that a maximum amplitude is preset at the presetting of the maximum target image resolution and the amplitude is reduced as the target image resolution decreases. (Form 7) In the method according to embodiment 5 or 6, it is preferred that the segmentation of the light distribution is achieved by individually controllable illumination pixels, which are arranged side by side with almost no gaps in a matrix having a resolution of at least 2 rows and 2 columns, and the maximum amplitude of deflection is selected so that the deflected state has a vertical and horizontal offset of half a pixel width compared to the undeflected reference state, so that at the maximum amplitude of deflection, each deflected illumination pixel spatially overlaps with four of the undeflected illumination pixels by 25% each, except for edge pixels. (Form 8) In the method according to any one of the first to seventh aspects, it is preferable that the deflection unit has a neutral position, and that the deflection unit automatically assumes the neutral position when the current supply to the deflection unit is lost or when the control variable provided for controlling the deflection unit is lost. (Form 9) In the method according to any one of aspects 1 to 8, it is preferable that the amplitude of the deflection is manipulated to achieve a target energy efficiency derived from the target operating signal in accordance with step a), and that the amplitude of the deflection is manipulated so that the amplitude of the deflection is reduced if the actual energy efficiency of the deflection unit is lower than the target energy efficiency. (Form 10) In the method according to any one of aspects 1 to 9, it is preferred that a zero position of deflection is manipulated to achieve an offset correction derived from the target operating signal according to step a). (Form 11) In the method according to any one of the first to tenth embodiments, it is preferable that the temporal rate of change of the deflection is manipulated to achieve the target image clarity derived from the target operating signal in accordance with step a), and that if the actual image clarity of the deflection unit is lower than the target image clarity, the temporal rate of change of the deflection is increased. (Form 12) In the method according to any one of the aspects 1 to 11, it is preferred that the temporal rate of change of the deflection is manipulated to achieve a target purity of the deflection unit derived from the target operating signal in accordance with step a), and that if the target purity is below the target purity, the temporal rate of change of the deflection is at least temporarily increased. (Form 13) In the method according to any one of the first to twelfth embodiments, it is preferable that the deflection unit includes a glass plate, and that the glass plate is configured to be rotatable or movable around at least one axis, preferably exactly one axis, or exactly two axes. (Form 14) In the method described in form 13, it is preferable that the glass plate has a flat light entrance surface and a light exit surface that is flat and parallel to the light entrance surface, the deflection unit has at least one electric coil for each axis about which the glass plate can rotate, and the glass plate is provided with magnetic coupling means for each of the coils for magnetically coupling with the respective coils, so that by energizing each of the coils, a force can be applied to the corresponding magnetic coupling means, and further, a force can be applied to the corresponding magnetic coupling means so that the glass plate can rotate around each of the axes depending on the energization of the coils. (Form 15) In the method according to aspect 14, it is preferred that the deflection unit further comprises, for each of the axes along which the glass plate can be pivoted, a mechanical return element, in particular a spring element, for returning the glass plate to a neutral position, and that the glass plate automatically assumes the neutral position in the event of a loss of current supply to the deflection unit or a loss of the control variable provided for controlling the deflection unit. (Form 16) 1. An illumination module for an automotive lamp, comprising: The illumination module is configured to emit a segmented light distribution, the illumination module includes a deflection unit, and by using the deflection unit, the visually perceptible resolution of the light distribution generated by the illumination module can be increased compared to the inherent light distribution of the illumination module, and the illumination module is configured to perform the method described in any one of aspects 1 to 15.

[0010] The deflection unit can be illuminated continuously depending on the desired light intensity, or it can be illuminated at predetermined cycle intervals or for a preset length of time, for example, only when the deflection unit is in the desired position.

[0011] In this case, the expression "native resolution" is understood to mean the resolution given by the sum of the individually controllable segments for light emission. For example, if the segments are arranged in two rows and two columns and are individually controllable, this corresponds to a native resolution of 2x2, and each individually controllable segment can also be called an illumination pixel (light-emitting pixel). The automobile illumination module preferably has a native resolution of at least 2x2, and particularly preferred is a high-resolution automobile illumination module.

[0012] By at least temporary deflection of the light beam by means of a deflection unit, it is possible to increase the resolution perceived by the human eye compared to the intrinsic resolution.

[0013] In particular, the time length between zero position crossings can be manipulated to achieve the target energy efficiency derived from the target operating signal according to step a), and the time length between zero position crossings can be manipulated so that if the actual energy efficiency of the deflection unit is below the target energy efficiency, the time length between zero position crossings is increased. The higher the frequency at which the deflection unit is controlled, the higher the energy consumption and the lower the energy efficiency. A reduction in frequency allows for a more economical operation of the irradiation device, which in turn contributes to energy savings and an increase in the lifespan of the actuator and the deflection device provided therefor.

[0014] In particular, the vehicle illumination module can be configured to emit different light images at a frequency of at least 60 Hz, typically between 60 Hz and 160 Hz, whereby different target images are input at a frequency of at least 30 Hz, converted into individual low-resolution images of each image pair at a frequency of at least 60 Hz, and emitted successively by the vehicle illumination module, whereby the deflection unit can be controlled at a frequency of at least 60 Hz, or the deflection unit is configured to start from any starting position and assume a desired deflection position within a maximum of 1 / 60 seconds.

[0015] Furthermore, the target energy efficiency can be preset such that it is determined depending on the detected driving speed of a vehicle including the illumination module together with the deflection unit, and the target energy efficiency can be preset such that the required target energy efficiency increases as the vehicle speed decreases.

[0016] This can be done, for example, by relying on a speed sensor or an optical image of the vehicle, i.e., for stationary operation, a lower frequency can be selected for the welcome projection than for moving operation, since a lower frequency selection in this case would result in undesired strobe-like effects.

[0017] The deflection unit can be illuminated constantly. Alternatively, however, the deflection unit can be illuminated only within a predetermined time interval, for example in a time-controlled manner, and / or only when the deflection unit reaches a certain position range, for example when it reaches an amplitude of at least 90%. In particular for ground projection or welcome projection, light can be emitted in a time-controlled manner. Visual special effects can also be achieved using time-controlled light sources.

[0018] In particular, the length of time between zero position crossings can be manipulated to achieve the target temperature derived from the target operating signal in accordance with step a), and the length of time between zero position crossings can be manipulated so that if the actual temperature of the deflection unit or irradiation module exceeds the target temperature, the length of time between zero position crossings is increased.

[0019] Furthermore, the amplitude of the deflection can be manipulated to achieve a target image clarity derived from the target operating signal in accordance with step a), and the amplitude of the deflection can be manipulated so that at a preset maximum clarity, a maximum amplitude is preset and the amplitude decreases as the target image clarity decreases.

[0020] For example, in a low beam light distribution, it may be advantageous for the light distribution to have blurring, so that the deflection angle of the deflection unit can be reduced. Bluring may also be advantageous when transitioning from a standard light distribution to another light distribution.

[0021] In particular, the amplitude of the deflection can be manipulated to achieve the target image resolution derived from the target operating signal in accordance with step a), and the amplitude of the deflection can be manipulated so that a maximum amplitude is preset at the preset maximum target image resolution and the amplitude is reduced as the target image resolution decreases.

[0022] Furthermore, the segmentation of the light distribution can be achieved by individually controllable illumination pixels arranged side by side with almost no gaps in a matrix with an intrinsic resolution of at least two rows and two columns, with the maximum amplitude of deflection being selected so that the deflected state is offset vertically and horizontally by half a pixel width compared to the undeflected reference state, so that at the maximum amplitude of deflection, each deflected illumination pixel overlaps spatially with four undeflected illumination pixels by 25% each, except for edge pixels. This allows the perceived resolution to be four times the intrinsic resolution. An edge pixel is understood here to mean an illumination pixel that is not surrounded on all sides by other illumination pixels, but has no adjacent illumination pixels on at least one side. This therefore refers to the edge region of the image to be projected.

[0023] In particular, the deflection unit can have a neutral position, which the deflection unit automatically assumes when the current supply to the deflection unit or the control variable provided for controlling the deflection unit is absent. The neutral position is understood to be the position of the deflection unit when no voltage is applied to the deflection unit. This position can, but does not have to, differ from the zero position, in which the deflection unit does not substantially deflect the light passing through the deflection unit. This ensures that the output of the light function continues even when the actuator is not needed or has to be switched off.

[0024] Furthermore, the amplitude of the deflection can be manipulated to achieve a target energy efficiency derived from the target operating signal according to step a), and the amplitude of the deflection can be manipulated such that if the actual energy efficiency of the deflection unit is below the target energy efficiency, the amplitude of the deflection is reduced, and a smaller deflection can likewise increase the lifespan of the actuator if required.

[0025] In particular, the zero position of the deflection can be manipulated to achieve the offset correction derived from the target operating signal according to step a). This means that slight deviations can occur in the provided optical path due to manufacturing and component tolerances. To configure the optical path in a sufficiently optimal state independent of such tolerances, for example, an offset correction can be performed, i.e., the predetermined deflection angle is adapted so that the optimal deflection angle and the neutral position effect are still achieved.

[0026] Furthermore, the temporal rate of change of the deflection can be manipulated in order to achieve the target image sharpness derived from the target operating signal according to step a), and can be manipulated so that if the actual image sharpness of the deflection unit is below the target image sharpness, the temporal rate of change of the deflection is increased. This does not necessarily mean an increase in frequency, but can be achieved by making the slope connecting two end positions steeper so that these end positions can be held for a longer time period over a constant time span of the entire working cycle. The faster the actuator movement or the position change of the deflection element of the deflection unit is performed, the sharper the image will be; the slower it is performed, the more the transition between the first and second frames will be "blended" together.

[0027] For example, in a low beam light distribution, it can be advantageous for the light distribution to have blurring, i.e. a visually perceptible smoothing between the lights of adjacent pixels, and if necessary, the deviation angle can be reduced. Bluring can also be advantageous when transitioning from a standard light distribution to another light distribution.

[0028] In particular, the time rate of change of the deflection can be manipulated to achieve a target purity of the deflection unit derived from the target operating signal according to step a), and if the target purity is below the target purity, the time rate of change of the deflection can be manipulated so that the time rate of change of the deflection is at least temporarily increased. Contaminant particles are drawn away from the deflection unit by increasing the mechanical movement within the deflection unit.

[0029] The illumination module is preferably configured for use in a motor vehicle lamp, in particular for use in a signal light lamp or a motor vehicle floodlight, and may therefore be part of such a device.

[0030] It should also be noted here that the individual functions or optimization tasks can be weighted or divided hierarchically. For example, if the function of the deflection unit is endangered due to reaching high temperatures, the temperature requirement would be weighted higher than the requirement determined depending on the driving speed. In this case, all safety-related requirements can be weighted highest. For example, if the target temperature is to be reduced (e.g., by reducing the deflection frequency or amplitude) and at the same time dust / dirt exceeding the permissible limit is detected (which can be overcome by increasing the deflection frequency), the requirement for the target temperature will be weighted higher, since in this case a temperature that is too high could lead to an irreparable failure of the deflection unit.

[0031] The target image information may also include information about the target light intensity of each image point (image pixel) of the image, which information can be provided to and realized by the light source of the automotive illumination module.

[0032] Furthermore, the deflection unit may include a glass plate, which is configured to be pivotable or movable about at least one axis, preferably exactly one axis, or exactly two axes.

[0033] In particular, the glass plate can have a flat light entrance surface and a flat light exit surface parallel to the light entrance surface, and the deflection unit has at least one electric coil for each axis along which the glass plate can be rotated, and the glass plate is provided with a magnetic coupling means for each coil, so that when each coil is energized, a force can be applied to the corresponding magnetic coupling means, and a force can be applied to the corresponding magnetic coupling means so that the glass plate can be rotated around the respective axis depending on the energization of the coil. In this case, the glass plate is arranged in the optical path of the illumination module. The light deflection is achieved by light refraction when entering and exiting the glass plate.

[0034] Furthermore, the deflection unit can have, for each axis along which the glass plate can be pivoted, a mechanical return element, in particular a spring element, for returning the glass plate to a neutral position, which the glass plate automatically assumes in the event of a loss of current supply to the deflection unit or of a control variable provided for controlling the deflection unit. Of course, more than one return element can also be provided per axis.

[0035] Furthermore, the present invention relates to an illumination module for a motor vehicle lamp, wherein the illumination module is configured to emit a segmented light distribution, wherein the illumination module comprises a deflection unit, by means of which the inherent resolution of the illumination module can be visually increased by at least temporary light beam deflection by means of the deflection unit, and wherein the illumination module is configured to carry out (or implement) the method according to the present invention.

[0036] All device features (or characteristics) described in the present method may also be part of the illumination module, unless otherwise specified. Conversely, all device features (or characteristics) described in relation to the illumination module may also be part of the above-mentioned method. The illumination module may relate to both a signal light and a vehicle floodlight. The illumination module is preferably configured for use in a vehicle lamp, in particular a signal light or a vehicle floodlight. The illumination module may therefore be part of the above-mentioned device.

[0037] The invention will now be explained in more detail on the basis of illustrative, non-limiting embodiments specifically illustrated in the drawings. [Brief explanation of the drawings]

[0038] [Figure 1a] FIG. 1 shows a schematic diagram of one illumination module in side view for use in connection with the present invention. [Figure 1b] 2 shows a side view of FIG. 1 with the deflection unit in a tilted position; FIG. [Figure 1c] FIG. 1b shows the illumination module in the position shown in FIG. 1b, viewed from above. [Figure 2a] FIG. 2 shows a schematic diagram of a first embodiment of a deflection unit; [Figure 2b] FIG. 2 shows a schematic diagram of a second embodiment of a deflection unit. [Figure 2c] FIG. 10 shows a schematic diagram of a third embodiment of a deflection unit. [Figure 3] FIG. 10 is a graph showing the static relationship between coil current and deflection for a typical deflection unit that can be used for the present invention. [Figure 4] 1 shows two light distributions that can be emitted one after the other in time using an illumination module according to the invention; [Figure 5] FIG. 1 shows a block diagram of possible individual components of the present invention. [Figure 6]3 shows a first time course of the deflection of a deflection unit that can be used in the present invention; FIG. [Figure 7] FIG. 2 shows a second time course of the deflection of a deflection unit that can be used in the present invention. [Figure 8] FIG. 10 shows a third time course of the deflection of a deflection unit that can be used in the present invention. [Example]

[0039] In the accompanying drawings, like reference numerals refer to like elements unless otherwise specified.

[0040] FIG. 1a shows a schematic side view of an illumination module 1 for use in connection with the present invention. The illumination module 1 is configured to emit a segmented light distribution. To this end, the illumination module 1 includes a light source 4, for example, a matrix of individually controllable LEDs, each LED being assigned to one segment of the radiable light distribution and constituting one illumination pixel 3 of the light distribution. Of course, other light sources or light source systems suitable for generating a segmented light distribution can also be used. The light source 4 is typically arranged on a circuit carrier 5, in particular a PCB (printed circuit board). The light emitted from the light source 4 can pass through, for example, optical components 6, such as diverging optics, before entering the deflection unit 2. The number of individually controllable light areas of the light source 4 typically determines the native resolution. If the light source 4 has, for example, 100 individually controllable LEDs arranged in a matrix of 10 rows and 10 columns, this results in 100 segments, or a native resolution of 10 × 10. The deflection unit 2 is configured to deflect the light beam L1 emitted by the light source 4. To this end, the deflection unit 2 can comprise a glass plate 2a, which is configured to be pivotable or movable about at least one axis. More detailed information on this is explained further in the following paragraphs in connection with Figures 2a to 2c.

[0041] In Figures 1a to 1c it can be seen that the deflection of light rays by the deflection unit 2 is achieved, for example, by refraction of light upon entry into and exit from the deflection unit 2. More precisely, the light is refracted at the light entrance surface 2a' of the glass plate 2a as well as at the light exit surface 2a" thereof. As a result, the exiting light is shifted with respect to the optical path of the incident light, i.e., the light ray L1 is deflected. In the present invention, this deflection is used to visually increase the intrinsic resolution of the illumination module 1 by at least temporary deflection of the light ray using the deflection unit 2. This is achieved by temporally variable deflection using the deflection unit 2, i.e., at a speed typically selected such that the light distributions emitted successively, which differ from one another at least in terms of the position of the individual segments due to different positions of the deflection unit 2, are perceived by the human eye as a common light distribution with a correspondingly higher perceptible resolution. The frequency here preferably has a value of at least 60 Hz.

[0042] For the sake of clarity of the drawings, some figures are shown in a Cartesian coordinate system, which is chosen so that the x-axis coincides with the main direction of emission (typically the forward travel direction of the vehicle in the case of a vehicle floodlight), the y-axis is perpendicular thereto and oriented horizontally, and the z-axis is oriented vertically and thereby perpendicular to the plane fixed by the x- and y-axes. In the example shown here according to Figures 1a to 1c, the glass plate 2a is pivotable about two axes, namely the y-axis (see Figure 1b) and the z-axis (see Figure 1c).

[0043] 1a shows the glass plate 2a in an undeflected reference state P0, which in this example corresponds to the neutral position Pn. However, these two positions may also differ from one another. That is, the deflection unit 2 may have a neutral position Pn, which the deflection unit 2 automatically assumes when the current supply of the deflection unit 2 is lost or when the control variable 2_s provided for controlling the deflection unit 2 is lost. The amplitude of deflection 2_A_ist is equal to zero in the position according to FIG. 1a.

[0044] As mentioned above, the segmentation of the light distribution can be achieved by individually controllable illumination pixels 3. Preferably, these illumination pixels 3 are arranged next to each other with almost no gaps in a matrix with an intrinsic resolution of at least 2 rows and 2 columns. The maximum amplitude of the deflection 2_Ay_max (see FIG. 1b) and / or 2_Az_max (see FIG. 1c) is selected so that the deflected state P1 has a vertical and horizontal offset of half a pixel width compared to the undeflected reference state P0, so that at the maximum amplitude of the deflection, each deflected illumination pixel 3 (seen after passing through the deflection unit 2) spatially overlaps with four undeflected illumination pixels by 25% each (except for the edge pixels).

[0045] Figure 1b shows a side view of Figure 1a, with the deflection unit 2 in a tilted position, where the deflection unit 2 or glass plate 2a is tilted around the y-axis at an angle α y 4. The displacement P of one illuminated pixel 3 in the image or the segmented light radiation to be subsequently arranged is then v is the side length P of one illuminated pixel 3 l The displacement of the illuminated pixel 3, P v(both upper and side) is the side length P of one illuminated pixel 3 l Only when values ​​half as large as .gamma. are taken, is the maximum increase in perceptible resolution achieved.

[0046] Figure 1c shows a top view of the illumination module 1 in the position of Figure 1b, where the glass plate 2a is rotated around the z axis at an angle α z 2_Az_max, so that here too the maximum perceptible increase in resolution has not yet occurred.

[0047] 2a shows a schematic diagram of a first embodiment of a deflection unit 2. Here, the deflection unit 2 comprises the glass plate 2a as described above, as well as two mechanical return elements 2d, in particular torsion springs, arranged along (or around) the y-axis, thereby enabling the glass plate 2a to pivot about the y-axis. Two electrical coils 2b are arranged perpendicular to the y-axis, i.e., along the z-axis, and form part of the deflection unit 2. The coils 2b are electrically conductive and are configured to apply a magnetic force to magnetic coupling means 2c, e.g., magnetic means, arranged correspondingly to the glass plate 2a.

[0048] In other words, the glass plate 2a has a flat light incident surface 2a' and a light exit surface 2a" (see FIG. 1a) that is flat and parallel to the light incident surface 2a', and the deflection unit 2 has at least one electric coil 2b for each axis along which the glass plate 2a can be rotated, and the glass plate 2a is provided with magnetic coupling means 2c for each coil 2b, respectively, for magnetically coupling with the respective coil 2b, so that by energizing the respective coil 2b, a force can be applied to the corresponding magnetic coupling means 2c, and the glass plate 2a can be rotated around each axis depending on the energization of the coil 2b. A force can be applied to the corresponding magnetic coupling means 2c so that the glass plate 2a is pivoted, in particular rotated, about an axis. For each axis along which the glass plate 2a can be pivoted, a mechanical return element 2d, in particular a spring element, is provided for returning the glass plate 2a to the neutral position Pn, which the glass plate 2a automatically assumes in the event of a loss of current supply to the deflection unit 2 or of a control variable 2_s (see FIG. 5) provided for controlling the deflection unit 2. In addition to or instead of this type of electromechanical force transmission, suitably coupled piezo actuators can also be used.

[0049] Figure 2b shows a schematic diagram of a second embodiment of the deflection unit 2. In contrast to Figure 2a, the glass plate 2a can now be pivoted around two axes, namely the y-axis and the z-axis. Here too, return elements 2d are arranged along the pivoting axes. Between the return elements 2d (of Figure 2a) are respectively arranged coils 2b and magnetic coupling means 2c. In this embodiment, pivoting with two degrees of freedom is achieved, i.e. deflection around the y-axis is independent of deflection around the z-axis and vice versa. Thus, deflection around both axes also achieves oblique deflection.

[0050] 2c shows a schematic diagram of a third embodiment of the deflection unit 2. Here, the suspension of the glass plate 2a is selected so that the deflection is already oblique to the y-axis and the z-axis, i.e. the deflection axis lies transverse to both of these axes y and z. Despite the fact that the number of degrees of freedom of deflection is now only one, this choice of deflection axis allows for a deflection that allows a visually perceptible increase in resolution relative to the intrinsic resolution by a factor of four.

[0051] 3 shows a graph illustrating the static relationship between the coil current and the deflection (or amplitude) of a typical deflection unit 2 that can be used for the present invention. In this graph, a linear relationship between current and deflection can be seen in the static case. The deflection 2_A_ist is proportional to the current I applied to the coil 2b. In dynamic operation, the mass inertia of the glass plate 2a, the possible inertia of the return element 2d, the inductive effect of the coil 2b, etc., must of course be taken into account. A person skilled in the art can then implement a suitable control algorithm for controlling the coil 2b in order to achieve the desired position of the glass plate 2a of the deflection unit 2 at any given time.

[0052] 4 shows a diagram of two light distributions LV1 and LV2 that can be emitted successively in time using an illumination module 1 according to the invention, each comprising 5x5 pixels arranged vertically and horizontally together to form a square, the square allocated to the second light distribution LV2 being spaced apart by a pixel length P in both the horizontal and vertical directions relative to the square allocated to the first light distribution LV1. l. It can be seen that the illuminated pixels overlap each other and that in the areas where the squares overlap, the impression arises that the number of illuminated pixels has now been increased by a factor of four (quadrate), since each illuminated pixel is divided into four different overlapping areas. The direct, temporally successive emission of the light distributions LV1 and LV2 thereby gives the visual impression of a clearly increased perceptible resolution compared to the intrinsic resolution of the illumination module (here 5x5). The impression of an increased perceptible resolution arises because the offset of the illuminated pixels is proportional to the pixel length P l It is at its maximum when it takes a value of 1 / 2 of .

[0053] FIG. 5 shows a block diagram of possible individual components of the present invention. It can be seen that illumination pixels 3 are assigned to light sources 4, which are controlled by a control unit 7. The control unit 7 includes a calculation unit 7a, which, for example, controls the light source 4 depending on an input image signal S1, so that its segments or illumination pixels 3 correspond to an image preset by the image signal S1, also called a target image Ssol, so that the image preset by the image signal S1 is formed as faithfully as possible. Based on the overlap of different light distributions, a visual impression as similar as possible to the preset target image Ssol can be created by appropriate calculation of different light distributions LV1 and LV2 and the adaptation / calculation of the corresponding deflection positions, e.g., Pn, P0, P1, depending on the different light distributions, especially when the preset image has a resolution exceeding the inherent resolution of the illumination module 1. The image signal S1 can be supplied to the control unit 7 via a data source 8.

[0054] The control of the deflection unit 2 has a certain degree of freedom. Essentially, an increased frequency of deflection of the glass plate 2a, as well as a larger deflection amplitude, entails increased energy consumption and wear of the electromechanical components involved. Depending on how accurately the target image Ssoll should be reproduced and whether additional functions, such as blurring, should possibly be applied to the target image Ssoll, targeted intervention can be performed in the calculation of the deflection using the deflection unit 2, as will be explained in more detail in connection with FIGS. 6 to 8. To this end, the control unit 7 is provided with a target operating signal 2_ss, which provides information on how accurately the target image Ssoll should be imaged, whether other environmental conditions, such as target energy efficiency Esoll, target temperature Tsoll, target image resolution Rsoll, target image sharpness Csoll, target purity Msoll, and / or presets for offset correction Osoll, should be taken into account, and, if so, with what hierarchical weighting the individual presets should be taken into account.

[0055] The present invention relates to a method for optimizing the operation and controlling a deflection unit 2 for an illumination module 1, wherein the illumination module 1 is configured to emit a segmented light distribution, and wherein the illumination module 1 comprises a deflection unit 2, by means of which the intrinsic resolution of the illumination module 1 can be visually increased by at least temporary light beam deflection by means of the deflection unit 2, wherein the method comprises the following steps: a) receiving a target operation signal 2_ss, wherein the target operation signal 2_ss includes information regarding at least one of the following criteria: target energy efficiency Esoll; target temperature Tsoll; target image resolution Rsoll; target image sharpness Csoll; target purity Msoll; offset correction Osoll; b) A step of manipulating the control variable 2_s of the deflection unit 2 depending on the target operating signal, wherein both the degree (range) of deflection and its time course are carried out by the deflection unit 2 depending on the control variable 2_s, wherein at least two of the following deflection aspects preset by the control variable 2_s are manipulated in magnitude (or height) and / or time length (or duration): amplitude 2_A_ist; zero position 2_0_ist; temporal rate of change 2_dt_ist; signal basic shape 2_F_ist; time length between zero position crossings 2_tp_ist.

[0056] Figure 6 shows a first time course of the deflection of the deflection unit 2. More precisely, there (as well as in Figures 7 and 8) the time course of the deflection (or amplitude) 2_Ay_ist can be seen along the course of the rotation of the glass plate 2a about the y-axis. Everything that has been said about the deflection about the y-axis can of course also be done correspondingly in the case of a separate or additional deflection about the z-axis.

[0057] The rotation (swivel) can take values ​​ranging from a few tenths of a degree to several degrees, for example. The deviation or deviation amplitude can then take a maximum value 2_Ay_max, as shown, for example, in Figures 6 and 7. In contrast, in Figure 8, the maximum deviation 2_Ay_max is reduced, as can be seen by comparing the values ​​2_Ay_max_Fig. 6 / 7, also shown in Figure 8.

[0058] In particular, the time length 2_tp_ist between zero-position crossings can be manipulated to achieve the target energy efficiency Esoll derived from the target operating signal 2_ss according to step a), and the time length 2_tp_ist between zero-position crossings can be manipulated so that if the actual energy efficiency Eist of the deflection unit 2 is lower than the target energy efficiency Esoll, the time length 2_tp_ist between the zero-position crossings can be increased. The higher the frequency at which the deflection unit 2 is controlled, the higher the energy consumption and the lower the energy efficiency. A reduction in frequency enables a more economical operation of the illumination module 1, which further contributes to energy savings and an increase in the lifespan of the actuator or coil 2b. In this case, the target energy efficiency Esoll can be preset so that it is determined depending on the detected driving speed Vist of the vehicle including the illumination module 1 together with the deflection unit 2, and the target energy efficiency Esoll can be preset so that the required target energy efficiency increases as the vehicle speed decreases.

[0059] FIG. 7 shows a variation in which the time length 2_tp_ist between zero position crossings is shortened compared to FIG. 6. In particular, both the deflection frequency (Frequenz) and the slope gradient between the deflection positions 2_Ay_max and -2_Ay_max to be achieved are increased. The slope time length 2_tf is thus also shortened in FIG. 7 compared to FIG. 6. The emission of light by the light source 4 can be time-controlled so that this emission occurs only within the time length between the slopes, and thus only outside 2_tf. In this way, for example, blurring of the emission is avoided, and the image clarity can be further increased.

[0060] Furthermore, the time length 2_tp_ist between zero position crossings can be manipulated in order to achieve the target temperature Tsoll derived from the target operating signal 2_ss according to step a), and if the actual temperature Tist of the deflection unit 2 or the irradiation module 1 exceeds the target temperature Tsoll, the time length 2_tp_ist between zero position crossings can be manipulated so that the time length 2_tp_ist between zero position crossings is increased.

[0061] Furthermore, the deflection amplitude 2_A_ist can be manipulated to achieve the target image clarity Csoll derived from the target operating signal 2_ss according to step a), and the deflection amplitude 2_A_ist can be manipulated so that at the preset maximum clarity, the maximum amplitude 2_A_max is preset and the amplitude 2_A_ist is reduced as the target image clarity Csoll decreases.

[0062] Furthermore, the deflection amplitude 2_A_ist can be manipulated to achieve the target image resolution Rsoll derived from the target operating signal 2_ss according to step a), and the deflection amplitude 2_A_ist can be manipulated so that when the maximum target image resolution is preset, the maximum amplitude 2_A_max is preset and the amplitude 2_A_ist is reduced as the target image resolution Rsoll decreases.

[0063] Furthermore, the deflection amplitude 2_A_ist can be manipulated to achieve the target energy efficiency Esoll derived from the target operating signal 2_ss according to step a), and if the actual energy efficiency Eist of the deflection unit 2 is lower than the target energy efficiency Esoll, the deflection amplitude 2_A_ist can be manipulated so that the deflection amplitude 2_A_ist is reduced.

[0064] In particular, the zero position of the deflection 2_0_ist can be manipulated to achieve the offset correction derived from the target operating signal 2_ss according to step a).

[0065] Furthermore, the temporal rate of change of the deflection 2_dt_ist can be manipulated to achieve the target image clarity Csoll derived from the target operating signal 2_ss according to step a), and can be manipulated so that if the actual image clarity Cist of the deflection unit 2 falls below the target image clarity Csoll, the temporal rate of change of the deflection 2_dt_ist is increased. For this increase in the temporal rate of change, for example, only the duration of the slope 2_tf can be taken into account. For example, a steeper slope allows the end position 2_Ay_max to be maintained longer at the same (constant) frequency. Achieving a steeper slope usually entails higher electromechanical demands or loads on the deflection unit 2. In other words, this does not necessarily mean an increase in frequency, but rather means that a steeper slope can be provided between two end positions. The faster the actuator movement towards the desired position is performed, the sharper the image will be, and the slower the desired position is reached, the more the transition between the first and second frames will "blend" together.

[0066] In particular, the temporal rate of change of deflection 2_dt_ist can be manipulated to achieve the target purity M_soll of the deflection unit 2 derived from the target operating signal 2_ss in accordance with step a), and if the target purity M_soll is not achieved, the temporal rate of change of deflection 2_dt_ist can be manipulated so that it is at least temporarily increased.

[0067] Furthermore, the present invention relates to an illumination module 1 for a motor vehicle lamp, the illumination module 1 being configured to emit a segmented light distribution and comprising a deflection unit 2, by means of which the inherent resolution of the illumination module 1 can be visually increased by at least temporary light beam deflection using the deflection unit 2, and the illumination module 1 being configured to perform the method according to the invention. Of course, the illumination module 1 can comprise components such as the above-mentioned control unit 7, light source 4, optical components 6, possible projection optics, etc.

[0068] The present invention is not limited to the illustrated embodiments, but is defined by the entire scope of protection of the claims. Individual features of the invention or embodiments can also be taken and combined with each other. Reference signs added to the claims are exemplary and do not limit the claims, but merely serve to make the claims easier to understand.

[0069] The disclosures of the above-mentioned patent and non-patent documents are incorporated herein by reference. Furthermore, within the scope of the entire disclosure of the present invention (including the scope of the claims), modifications and adjustments to the embodiments are possible based on the basic technical concepts thereof. Furthermore, within the scope of the entire disclosure of the present invention, various combinations and selections of the various disclosed elements (including each element of each claim, each element of each embodiment, each element of each drawing, etc.) are possible. In other words, the present invention naturally includes various modifications and alterations that would be possible by a person skilled in the art in accordance with the entire disclosure and technical concepts, including the scope of the claims. In particular, with regard to the numerical ranges described herein, any numerical value or subrange included within the range should be construed as being specifically described, even if not otherwise specified. [Explanation of symbols]

[0070] 1. Irradiation module 2 deflection units 2a Glass plate 2a' Light incidence surface 2a” light exit surface 2b Electrical Coil 2c Magnetic coupling means 2d return element 3 illuminated pixels 4 light source 5 Circuit support 6 Optical Components 7. Control Unit 7a Computational Unit 8 Data Sources L1 ray xx axis yy axis zz axis P0 reference state P1 Deflected state Pn neutral position α y angle α z angle I coil current LV1 Light Distribution LV2 Light Distribution P l Side length of illuminated pixel 3 P v Displacement of illuminated pixel 3 S1 image signal Ssoll goal image Vist vehicle speed 2_ss Target operation signal Osoll offset correction Tsoll target temperature Csoll target image clarity Esoll Target Energy Efficiency Rsoll target image resolution Msoll target purity 2_s Control amount Oist Offset Correction Test actual temperature Cist Actual image clarity Eist Actual Energy Efficiency Rist actual image resolution Mist Actual Purity t Time (horizontal axis) 2_Ay Amplitude (vertical axis) 2_A_ist amplitude 2_Ay_ist amplitude 2_Az_ist amplitude 2_Ay_max Maximum amplitude 2_Az_max Maximum amplitude 2_0_ist Zero position 2_tp_ist Time length between zero position crossings 2_dt_ist Time rate of change 2_tf Slope time length

Claims

1. 1. A method for optimizing the operation and controlling a deflection unit for an illumination module, comprising: The illumination module (1) is configured to emit a segmented light distribution, the illumination module (1) comprising a deflection unit (2), by means of which the intrinsic resolution of the illumination module (1) can be visually increased by at least temporary light beam deflection using the deflection unit (2), the method comprising the following steps: a) receiving a target operation signal (2_ss), wherein said target operation signal (2_ss) includes information regarding at least one of the following criteria: target energy efficiency (Esoll); target temperature (Tsoll); target image resolution (Rsoll); target image sharpness (Csoll); target purity (Msoll); offset correction (Osoll); b) manipulating a control variable (2_s) of the deflection unit (2) as a function of the desired operating signal, wherein both the extent of the deflection and the time course are effected by the deflection unit (2) as a function of the control variable (2_s), and wherein at least two of the following aspects of the deflection, preset by the control variable (2_s), are manipulated in magnitude and / or time duration: amplitude (2_A_ist); zero position (2_0_ist); temporal rate of change (2_dt_ist); time duration between zero position crossings (2_tp_ist), the time length (2_tp_ist) between zero-position crossings is manipulated in order to achieve the target temperature (Tsoll) derived from the target operating signal (2_ss) according to step a), and the time length (2_tp_ist) between zero-position crossings is manipulated in such a way that if the actual temperature (Tist) of the deflection unit (2) or the irradiation module (1) exceeds the target temperature (Tsoll), the time length (2_tp_ist) between zero-position crossings is increased, A method characterized by:

2. a time length (2_tp_ist) between zero-position crossings is manipulated in order to achieve a target energy efficiency (Esoll) derived from the target operating signal (2_ss) according to step a), and if the actual energy efficiency (Eist) of the deflection unit (2) is lower than the target energy efficiency (Esoll), the time length (2_tp_ist) between zero-position crossings is manipulated so that the time length (2_tp_ist) between zero-position crossings is increased; The method of claim 1 ,

3. the target energy efficiency (Esoll) is preset in such a way that it is determined as a function of the detected driving speed (Vist) of a vehicle including the illumination module (1) together with the deflection unit (2), and the target energy efficiency (Esoll) is preset in such a way that the required target energy efficiency (Esoll) increases with a decrease in the vehicle speed (Vist); The method of claim 2 , wherein

4. the amplitude (2_A_ist) of the deflection is manipulated in order to achieve the target image clarity (Csoll) derived from the target operating signal (2_ss) in accordance with step a), and the amplitude (2_A_ist) of the deflection is manipulated in such a way that, at the preset maximum clarity, maximum amplitudes (2_Ay_max, 2_Az_max) are preset, and as the target image clarity (Csoll) decreases, the amplitude (2_A_ist) is reduced; The method of claim 1 ,

5. the amplitude (2_A_ist) of the deflection is manipulated in order to achieve the target image resolution (Rsoll) derived from the target operating signal (2_ss) in accordance with step a), and the amplitude (2_A_ist) of the deflection is manipulated in such a way that, at the preset maximum target image resolution (Rsoll), a maximum amplitude (2_A_max) is preset, and as the target image resolution (Rsoll) decreases, the amplitude (2_A_ist) is reduced; The method of claim 1 ,

6. the segmentation of the light distribution is realized by individually controllable illumination pixels (3), which are arranged next to each other with almost no gaps in a matrix having a resolution of at least 2 rows and 2 columns, and the maximum amplitude of deflection is selected so that the deflected state (P1) has a vertical and horizontal offset of half a pixel width compared to the non-deflected reference state (P0), so that at the maximum amplitude of deflection, each deflected illumination pixel (3) spatially overlaps with four non-deflected illumination pixels (3) by 25% each, except for edge pixels; 6. The method according to claim 4 or 5, characterized in that

7. the deflection unit (2) has a neutral position (Pn), which the deflection unit (2) automatically assumes in the event of a loss of current supply to the deflection unit (2) or a loss of the control variable (2_s) provided for controlling the deflection unit (2); The method of claim 1 ,

8. the deflection amplitude (2_A_ist) is manipulated in order to achieve a target energy efficiency (Esoll) derived from the target operation signal (2_ss) according to step a), and the deflection amplitude (2_A_ist) is manipulated so that if the actual energy efficiency (Eist) of the deflection unit (2) is lower than the target energy efficiency (Esoll), the deflection amplitude (2_A_ist) is reduced; The method of claim 1 ,

9. the zero position of the deflection (2_0_ist) is manipulated in order to achieve an offset correction (Osoll) derived from the target operating signal (2_ss) according to step a), The method of claim 1 ,

10. the time rate of change of the deflection (2_dt_ist) is manipulated in order to achieve the target image clarity (Csoll) derived from the target operating signal (2_ss) according to step a), and the time rate of change of the deflection (2_dt_ist) is manipulated so that if the actual image clarity (Cist) of the deflection unit (2) is lower than the target image clarity (Csoll), the time rate of change of the deflection (2_dt_ist) is increased; The method of claim 1 ,

11. the time rate of change of the deflection (2_dt_ist) is manipulated in order to achieve a target purity (Msoll) of the deflection unit (2) derived from the target operating signal (2_ss) in accordance with step a), and if the target purity (Msoll) is not achieved, the time rate of change of the deflection (2_dt_ist) is manipulated in such a way that the time rate of change of the deflection (2_dt_ist) is at least temporarily increased, The method of claim 1 ,

12. the deflection unit (2) comprises a glass plate (2a), which is configured to be pivotable or movable about at least one axis, or exactly one axis (y), or exactly two axes (y, z); The method of claim 1 ,

13. the glass plate (2a) has a flat light entrance surface (2a') and a light exit surface (2a") that is flat and parallel to the light entrance surface (2a'); the deflection unit (2) has at least one electric coil (2b) for each axis along which the glass plate (2a) can be rotated; the glass plate (2a) is provided with a magnetic coupling means (2c) for each of the coils (2b) for magnetically coupling with the respective coils (2b), so that by energizing each of the coils (2b), a force can be applied to the corresponding magnetic coupling means (2c); and the glass plate (2a) can be rotated around each of the axes (y, z) depending on the energization of the coils (2b). The method of claim 12, wherein:

14. the deflection unit (2) further comprises, for each of the axes (y, z) along which the glass plate (2a) can be pivoted, a mechanical return element (2d) for returning the glass plate (2a) to a neutral position (Pn), the glass plate (2a) automatically assuming the neutral position (Pn) in the event of a loss of the current supply of the deflection unit (2) or of the control variable (2_s) provided for controlling the deflection unit (2); The method of claim 13, wherein:

15. 1. An illumination module for an automotive lamp, comprising: the illumination module (1) is configured to emit a segmented light distribution, the illumination module (1) comprises a deflection unit (2) by means of which the visually perceptible resolution of the light distribution generated by the illumination module (1) can be increased compared to the intrinsic resolution of the illumination module (1), the illumination module (1) being configured to perform the method according to claim 1; An illumination module characterized by:

Images