FR3082918A1 - < P > LIGHT MODULE OF A MOTOR VEHICLE PRODUCING A PIXEL CROSSING BEAM < / P > - Google Patents

Abstract

The invention relates to a light module (10) for a motor vehicle producing a passing beam (14) capable of illuminating a global zone (18) divided into several rows (32A, 32B, 32C) of transverse pixels (34) juxtaposed, of which each has a quadrilateral shape delimited transversely by two lateral edges (36) and vertically by two horizontal edges (38), the pixels (34) of the same row (32A, 32B, 32C) having an identical transverse width, each pixel (34) which can be activated selectively, characterized in that the pixels (34) of a given row (32B, 32C) are shifted horizontally with respect to the pixels (34) of the row (32A, 32B) directly lower by offset distance (D) such that none of the lateral edges (36) of the pixels (34) of said determined row (32B, 32C) is butted with a lateral edge (36) of a pixel (34) of the row (32A, 32B) directly below.

Description

Motor vehicle light module producing a pixel passing beam

TECHNICAL FIELD OF THE INVENTION

The invention relates to a light module for a motor vehicle producing a passing beam having a cut-off line, a determined portion of the overall area illuminated by the passing beam being formed of several juxtaposed pixels.

TECHNICAL BACKGROUND OF THE INVENTION

To achieve the low beam function, motor vehicles are equipped with optical modules which produce a low beam with a cut-off line. This cut-off line is formed by two storied horizontal sections, a lower horizontal section and an upper horizontal section. An intermediate section connects the two horizontal sections, generally by means of a slope. Ideally, this slope has an angle between 15 ° and 45 ° relative to the horizontal direction.

This cut-off line makes it possible in particular to avoid dazzling the drivers of vehicles traveling in the opposite direction. In right-hand drive countries, the lower horizontal section of the cut-off line is arranged to the left of the main axis of the dipped beam, towards the center of the road, while the upper horizontal section is arranged to the right, down the road. The profile of the cut line is reversed in the countries practicing left-hand drive.

Traditionally, such a cut-off beam is obtained by a light module which is provided with a single light source which emits the crossing light beam. The cut-off line is obtained by a cover which creates a shadow area in the light beam.

To improve the illumination of the road, it is permitted to use a dynamic passing beam which operates in cornering lighting mode. In this operating mode, the intermediate section of the cut-off line can be moved laterally in the turning direction of the vehicle wheels. In general, this operating mode is triggered when the vehicle is traveling at high speed in order to illuminate with greater range the lane on which the vehicle is traveling in a turn, while on the contrary reducing the range of the passing beam on the opposite way. Such a lighting function is better known under the name DBL, which is the acronym of the English expression dynamic bending light.

To produce such a passing beam, it is known to use optical modules implementing arrays of light-emitting diodes. Such optical modules make it possible to produce light beams called pixel beams or else pixel beams. The light-emitting diodes can be controlled individually or in groups between an on and an off state independently of the other light-emitting diodes or groups of light-emitting diodes. Each light-emitting diode or group of light-emitting diodes produces an elementary light beam which is substantially juxtaposed with the adjacent elementary beams. Each of these elementary light beams will thus illuminate a small portion called a pixel. All the lit pixels will thus uniformly illuminate a lighting area.

Thanks to such a pixel light beam, it is possible to create a dynamic crossing beam in which the pixels located in a determined portion of beam located under the upper section of the cut line, and above the level are selectively activated. of the lower section. The pixels located directly above the lower edge are selectively turned off. The transition between the illuminated part and the unlit part of this determined portion is achieved by activating pixels in a rising staircase from the lower section to the upper section. The intermediate section of the cut line is thus discretized into a succession of lateral and / or horizontal edges of the pixels lit at the corresponding end of the determined portion. The intermediate section thus has a crenellated appearance.

However, the pixels that can be obtained at a reasonable cost have relatively large dimensions, in height and in width. Thus the intermediate section which is supposed to follow an inclined slope of approximately 45 ° is only very roughly discretized in vertical and horizontal lines. In certain extreme cases, the intermediate section comes down to a vertical shoulder edge which directly connects the lower section to the upper section. Such an embodiment does not make it possible to obtain comfortable lighting.

It has also been proposed to modify the shape of the pixels so that they have inclined edges, for example in the form of a diamond or of a hexagon, which make it possible to produce the intermediate section in the form of a slope. However, this specific shape does not make it possible to obtain horizontal sections of perfectly straight cut-off line. On the contrary, they appear crenellated, which is likely to disturb the driver of the vehicle.

BRIEF SUMMARY OF THE INVENTION

To solve these problems in particular, the invention provides a light module for a motor vehicle producing a passing beam capable of illuminating a global zone, the passing beam having a cut-off line comprising a lower transverse section extending along a median horizontal axis and a second upper transverse section extending along an upper horizontal axis, connected by an intermediate section, at least a determined portion of the overall area, between the lower horizontal axis and the horizontal axis upper, being divided into at least two transverse rows of several juxtaposed pixels each of which has a quadrilateral shape delimited transversely by two lateral edges and vertically by two horizontal edges, the pixels of the same row having an identical transverse width, each pixel being able to be selectively activated, remarkable in that the p ixels of a given row are shifted horizontally with respect to the pixels of the next lower row by an offset distance such that none of the side edges of the pixels of said determined row are butted with a side edge of one pixel of the directly lower row.

This allows on the one hand to adjust the slope of the intermediate section of the cut line by varying the value of the offset distance. This makes it possible, on the other hand, to obtain a discretized intermediate section with better resolution using only portions of horizontal edges of pixels. In addition, the advantage is retained of having perfectly straight horizontal sections of cut line.

According to another aspect of the invention, the lateral edges of each pixel are vertical. This makes it possible to reduce the manufacturing cost of the light module by using standard light sources and optical elements which are simple to manufacture.

The determined portion extends transversely on either side of a vertical median axis passing through an optical axis of the passing beam. This allows the light module to operate in a bend lighting mode.

The width of each pixel in a row has a width equal to or an integer multiple of the width of the pixels with the smallest width.

The offset distance is equal to half the width of the pixels in the bottom end row. This makes it possible to produce a passing beam both for vehicles intended for right-hand driving and for vehicles intended for left-hand driving.

According to a first aspect of the invention, the determined portion is divided only into two rows of pixels.

Each pixel in the upper row has a width equal to that of each pixel in the lower row. Such an embodiment makes it possible to use identical light sources to produce each row of pixels.

According to a second aspect of the invention, the determined portion is divided only into three rows of pixels.

The pixels of all the rows have the same width. Such an embodiment makes it possible to use identical light sources to produce each row of pixels.

Alternatively, the intermediate row has pixels twice as wide as the pixels of the lower end row.

The upper end row may have pixels of the same width as that of the pixels in the intermediate row.

According to another aspect of the invention, the passing beam comprises a base beam which illuminates a base portion which is bounded upwards by the lower horizontal axis.

According to yet another aspect of the invention, the determined portion comprises a transverse repetition of diagonal patterns, a diagonal pattern of pixels comprising at least one lower pixel of the lower end row, at least one intermediate pixel of the intermediate row which is arranged above said lower pixel and which is offset by the offset distance, and at least one upper pixel in the upper end row which is arranged above said intermediate pixel and which is offset by distance D, each diagonal pattern comprising a single pixel of greater width, the diagonal patterns whose pixel or upper pixels are entirely situated vertically under the upper transverse section of the cut line being selectively activated. This greatly simplifies the management of the light module by controlling groups of light sources rather than individual light sources.

In addition, the light module is capable of operating in a cornering mode of lighting in which the intermediate section is moved laterally as a function of a steering angle of the vehicle by selective activation of diagonal patterns of pixels.

According to another aspect of the invention, each pixel of the determined portion is wider than it is high.

BRIEF DESCRIPTION OF THE FIGURES

Other characteristics and advantages of the invention will appear during the reading of the detailed description which will follow for the understanding of which reference will be made to the appended drawings in which:

- Figure 1 is a side view which schematically shows a motor vehicle equipped with a light module produced according to the teachings of the invention which projects a crossing light beam towards a screen;

- Figure 2 is a front view which shows the screen illuminated by the light beam, the overall area illuminated by the light beam being divided into a base portion and a determined portion;

- Figures 3 to 7 are detailed views of the screen of Figure 2 each of which represents the determined portion of the overall area illuminated by a light module produced according to different embodiments of the invention;

FIG. 8 is a perspective view which represents an exemplary embodiment of a light module capable of producing the lights shown in FIGS. 3, 5 and 6.

DETAILED DESCRIPTION OF THE FIGURES

In the following description, elements having an identical structure or analogous functions will be designated by the same reference.

In the following description, guidelines will be adopted without limitation:

• longitudinal X, directed from back to front;

• vertical Z, directed from bottom to top;

• transverse Y, directed from the center of the road, located on the left of figure 2, towards the side of the road, located on the right in figure 2.

FIG. 1 shows a motor vehicle 10 equipped with a light module 12 produced according to the teachings of the invention. The light module 12 is arranged at the front of the vehicle 10. It is intended to produce a light beam 14 of forward crossing along a longitudinal main emission axis A. The dipped beam 14 is capable of fulfilling a dipped beam function.

For the purposes of the description, a transverse vertical screen 16 is arranged at the front of the vehicle, at a distance of 25 m. FIG. 2 shows the screen 16 illuminated by the light beam 14. The screen 16 is provided with a mark formed by a horizontal median axis H on the abscissa and a median vertical axis V on the ordinate which is substantially intersect at the center of the screen 16 at the point of intersection with the axis A of the light beam 14.

The light beam 14 more particularly illuminates an overall zone 18 delimited upwards by a cut line 20. The cut line 20 is stepped in a first lower transverse section 22 and a second upper transverse section 24. The first lower section 22 s 'extends along the median horizontal axis H while the second upper section 24 extends along an upper horizontal axis 26. The upper horizontal axis 26 is thus arranged parallel and above the horizontal axis median H.

The two proximal ends of lower section 22 and upper section 24 are spaced transversely. The proximal end of the lower section 22 is arranged substantially on the axis A, while the proximal end of the upper section 24 and slightly offset, here to the right, relative to the vertical median axis V. The first lower section 22 is connected to the second upper section 24 by an intermediate section 28, also called an elbow, which generally has a rising slope. The slope has for example an angle taken between 35 and 45 degrees with respect to the median horizontal axis H.

In the case of a motor vehicle designed to roll to the right of the road, the lower section 22 of the cut-off line is here arranged on the left of the screen 16, towards the center of the road, while the upper section 24 is arranged on the right of screen 16, towards the roadside. It will be understood that a vehicle designed to drive to the left of the road will have a symmetrical cutoff with respect to the vertical median axis V.

The light module 12 is here designed to operate in a cornering mode of lighting. In this operating mode, the intermediate section 28 is capable of being moved transversely on either side of its neutral position which is shown in very full in FIG. 2. The direction and the distance of movement of the intermediate section 28 depends a steering angle of the vehicle, generally when the vehicle is traveling at a high speed, for example greater than 70 km / h.

Thus, when the driver of the vehicle makes a turn to the right, the intermediate section 28 is moved transversely to the right, as indicated by the dotted line 28A in FIG. 2. In this case, the lower section 22 is extended to the right beyond the median vertical axis V, while the upper section 24 shortened to the right.

Similarly, when the driver makes a turn to the left, the intermediate section 28 is moved transversely to the left, as indicated by the dotted line 28B in FIG. 2. In this case, the lower section 22 and shortened to the left, while the upper section 24 is extended to the left as indicated by the dotted line by the reference 24B.

Several portions are defined in the global zone 18. A first determined portion 30 of the global zone 18 is vertically comprised between the median horizontal axis H and the upper horizontal axis 26. A second base portion 31 extends below the median horizontal axis H.

In a variant not shown of the invention, the light module 10 is capable of producing a light beam capable of further fulfilling a high beam function or an adaptive high beam function. For this purpose, the passing beam is capable of being supplemented by a complementary beam which illuminates above the upper horizontal axis 26. When it fulfills an adaptive high beam function, the complementary beam is itself divided into pixels that are capable of being activated independently of each other.

To carry out the lighting mode for cornering in a precise and inexpensive manner, the invention proposes to divide the determined portion 30 of the overall area 18 into at least two rows 32A, 32B transverse of several pixels 34 juxtaposed, the light module 10 being fixed relative to the vehicle 10.

Said determined portion 30 extends transversely on either side of the median vertical axis V at least over all the regions of the screen 16 capable of being lit in cornering lighting mode.

In general, the pixels 34 are contiguous, that is to say that they are either juxtaposed or slightly overlapping. This makes it possible to illuminate the determined portion 30 in a homogeneous manner. In addition, when a pixel 34 is extended, its location is no longer lit.

Each pixel 34 has a shape of parallelogram delimited transversely by two lateral edges 36 and delimited vertically by two horizontal edges 38. For the remainder of the description, the width Lp of a pixel 34 is defined as being the transverse dimension of one of its horizontal edges 38 and its height Hp as the distance between its two horizontal edges 38.

Unless otherwise indicated, thereafter the pixels 34 have by default a rectangular shape, and the lateral edges 36 extend vertically.

All the pixels 34 of the same row have an identical width Lp. In the embodiments shown in the figures, all the rows 32A, 32B here have the same height Hp. In general, each pixel 34 of the determined portion 30 is here wider than it is high.

The light module 10 is designed so that each pixel 34 of the determined portion 30 can be activated selectively and independently of the others. The pixels 34 controlled so as to obtain the cut line 20 shown in the figure

2. Thus, the upper horizontal edges 38 of the activated pixels 34 of the upper extreme row 32C are intended to form the upper section 24 of the cut line 20.

To produce the intermediate section 28, the pixels 34 arranged transversely between the two horizontal sections 22, 24 are activated so as to form an ascending staircase according to the desired slope from the lower section 22 to the upper section 24. Thus, the intermediate section 28 is formed by an alternation of lateral edges 36 and horizontal edges 38.

To date, this type of light module does not make it possible to obtain, at a reasonable cost, pixels 34 having dimensions, in particular transverse, sufficiently reduced so that the slope of the intermediate section 28 is produced with good resolution. As a result, the intermediate section 28 of the cut-off line 20 appears crenellated for an outside observer.

The invention provides a simple and inexpensive solution for producing an intermediate section 28 having a discretized slope with better resolution, that is to say formed by a greater number of horizontal and lateral edges relative to the state. of technique.

To this end, the invention proposes that the pixels 34 of a determined row 32B be offset horizontally with respect to the pixels 34 of the row 34A directly lower by a distance D of offset such that none of the lateral edges 36 of the pixels 34 of said determined row 32B is not butted with a lateral edge 36 of a pixel 34 of row 32A directly below.

Thus, the intermediate section 28 is produced by an alternation of entire side edges 36 and portions of horizontal edges 38. The slope of the intermediate section 28 is thus produced with better resolution than when the pixels 34 are aligned vertically. In addition, by adjusting the offset distance D, it is possible to more easily adjust the inclination of the slope.

In general, the width of each pixel 34 in a row has a width equal or multiple to the width of the pixels 34 having the smallest width.

In a first embodiment of the invention shown in FIG. 3, the determined portion 30 of the global area 18 is here vertically divided only into three rows 32A, 32B, 32C of pixels 34. All the pixels 34 here have the same width Lp whatever their row 32A, 32B, 32C.

More particularly, each pixel 34 has a width Lp equal to twice its height Hp. The offset distance D between each row 32A, 32B, 32C is here equal to half the width Lp of a pixel 34, so that the pixels 34 are capable of discretizing a slope of 45 °. Such an arrangement makes it possible in particular to use the same optical module 10 either for a vehicle intended for right-hand driving or for a vehicle intended for left-hand driving.

More specifically, the intermediate row 32B is offset by the distance D transversely to the aisle with respect to the lower end row 32A, and the upper end row 32C is offset by the distance D transversely to the aisle relative to the intermediate row 32B.

A diagonal pattern 40 of pixels 34 is defined here. In this embodiment, a diagonal pattern 40 of pixels comprises a lower pixel 34A of the lower end row 32A, an intermediate pixel 34B of the intermediate row 32B which is arranged at above said lower pixel 34A and which is offset by the distance D towards the roadside with respect to said lower pixel 34A, and an upper pixel 34C of the upper end row 32C which is arranged above said pixel 34B intermediate and which is offset by the distance D towards the aisle with respect to said intermediate pixel 34B. The pixels 34A, 34B, 34C of a diagonal pattern 40 are thus arranged in a staircase. The determined portion 30 thus comprises a transverse repetition of diagonal patterns 40.

In FIG. 3, the pixels 34 which are off are hatched while the pixels 34 which are lit are empty. The cut line 20 is created by selective activation of the diagonal patterns 40 of pixels 34 whose upper pixel 34C is entirely located under the upper transverse section 24 of the cut line 20. The diagonal patterns 40 of pixels 34 including the lower pixel 34A is entirely located on the lower transverse section 22 of the cut line 24 are selectively extinguished. The intermediate section 28 of the cut line 24 is thus formed by the selective activation of the diagonal pattern 40 of pixels 34 located directly at the proximal end of the lower section 22 of the cut line 24. The intermediate section 28 is thus formed the left lateral edge 36 of the lower pixel 34A, by a horizontal edge edge 38 upper of the lower pixel 34A, by the left lateral edge 36 of the intermediate pixel 34B, by a horizontal edge half upper 38 of the intermediate pixel 34B, by the edge lateral 36 left of the upper pixel 34C. The intermediate section 28 thus forms a staircase with two steps which rises on average with a slope of 45 ° from the lower section 22 to the upper section 24.

When the light module 10 operates in cornering mode, the intermediate section 28 is moved laterally as a function of the steering angle of the vehicle by selective activation of the pixels 34 of the determined portion 30.

More precisely, when the vehicle turns to the right, the diagonal patterns 40 are gradually extinguished in order from the neutral position of the intermediate section, referenced 28 in FIG. 3, to its desired position, referenced 28A in FIG. 3 Thus, in the example of FIG. 3, three diagonal patterns 40 are extinguished one after the other from the left to the right.

When the vehicle 10 turns to the left, the diagonal patterns 40 are lit progressively in order from the neutral position of the intermediate section 28 to its desired position referenced 28B in Figure 3. Thus, in the example of Figure 3, two diagonal patterns 40 are lit one after the other from right to left.

A second embodiment of the invention is shown in FIG. 4. This embodiment is identical to the first embodiment with the only difference that the determined portion 30 is here vertically divided only into two transverse rows 32A, 32B of pixels 34.

In this case, a diagonal pattern 40 is formed only of a lower pixel 34A and an upper pixel 34B which is arranged directly above the lower pixel 34A and which is offset by the distance D towards the aisle.

The operation of this embodiment in cornering mode of lighting is identical to that of the first embodiment.

FIG. 5 shows a third embodiment of the invention. In this third embodiment, the determined portion 30 of the screen 16 is divided only into three rows 34A, 34B, 34C of pixels 34.

Unlike the first embodiment, the intermediate row 32B has pixels 34 twice as wide as the pixels 34 of the lower end row 32A. In addition, the upper end row 32C has pixels 34 of the same width as that of the pixels 34 of the intermediate row 32B.

The offset distance D is equal to half the width Lp of the pixels 34 of the lower row 32A.

In this embodiment, a diagonal pattern 40 therefore comprises:

- two adjacent lower pixels 34A,

the intermediate pixel 34B of the intermediate row 32B which is arranged above the said lower pixels 34A and which is offset by the distance D towards the aisle with respect to the lower pixel 34A arranged towards the center of the road,

- And the upper pixel 34C of the upper row 32C which is arranged above said intermediate pixel 34B and which is offset by the distance D towards the aisle.

The diagonal patterns 40 are thus repeated transversely with a pitch which is equal to twice the width Lp of the lower pixels.

The operation in cornering mode of lighting is identical to that which is described in the first embodiment.

In particular, the cut line 20 is created by selective activation of the diagonal patterns 40 of pixels 34 whose upper pixel 34C is entirely located under the upper transverse section 24 of the cut line 20. The diagonal patterns 40 of pixels 34 including the pixels 34A lower are all entirely located on the lower transverse section 22 of the cut line 24 are selectively extinguished.

A fourth embodiment of the invention is shown in FIG. 6. In this embodiment, the determined portion 30 of the area 18 is divided into three rows 32A, 32B, 32C of pixels. The pixels 34 of the two lower rows 32A, 32B have an identical width Lp. On the other hand, the pixels 34 of the upper row 32C have a width which is equal to half the width Lp of the pixels 34 of the lower row 32A.

The offset distance D is here equal to half the width Lp of a pixel 34 of the lower row 32A. Thus, in this embodiment, only the two lower rows 32A, 32B have pixels 34, all of the lateral edges 36 of which are offset from one another.

In this embodiment, a diagonal pattern 40 is formed by:

- a lower pixel 34A of the lower row 32A,

an intermediate pixel 34B of the intermediate row 32B which is arranged above said lower pixel 34A and which is offset by the distance D towards the aisle,

- A first upper pixel 34C of the upper row which is arranged above the right half of the intermediate pixel 34B, as well as a second upper pixel 34C which is arranged directly to the right of the first upper pixel 34C.

The operation in cornering lighting mode is the same as in the first embodiment of the invention.

In particular, the cut line 20 is created by selective activation of the diagonal patterns 40 of pixels 34, all of the upper pixels 34C of which are entirely located under the upper transverse section 24 of the cut line. The diagonal patterns 40 of pixels 34 whose lower pixel 34A is entirely located on the lower transverse section 22 of the cut line 24 are selectively extinguished.

A fifth embodiment of the invention is shown in Figure 7. This embodiment is almost identical to the second embodiment shown in Figure

2. The only difference is that the lateral edges 36 of the pixels 34 of the lower row 32A are inclined in the direction of the aisle so that the upper horizontal edge 38 of the pixel 34 is closer to the aisle than its lower horizontal edge 38. The angle formed between the lateral edge 36 and the transverse direction is equal to the desired slope for the intermediate section 28, that is to say between 35 ° and 45 °, for example 45 °.

We now describe, with reference to FIG. 8, an example of a light module 10 capable of being used to produce a passing beam 14 according to the teachings of the invention.

The light module 10 comprises a first optical module 41. This first optical module 41 is intended to form a partial light beam which is capable of illuminating only the determined portion 30 of the global area 18.

The first optical module 41 comprises a matrix 42 of several transverse rows of light sources 44. Each light source 44 here emits a primary light beam generally longitudinally forward.

Each light source 44 is intended to illuminate only one associated pixel 34 of the determined portion 30. The matrix 42 comprises as many rows of light sources 44 as there does not comprise the determined portion 30. In the example shown in FIG. 8, the matrix 42 comprises three rows of light sources 44. This first optical module 41 can thus be used to carry out any of the first, third or fourth embodiments of the invention.

As a variant, the matrix 42 of light sources 44 only has two rows to allow the second or the fifth embodiment of the invention to be produced.

This is a matrix 42 of light emitting diodes 44. The light emitting diodes 44 are here carried by transverse bars 46. Each row of light emitting diodes 44 is more particularly carried by a strip 46. The light emitting diodes 44 are here arranged on a vertical transverse printed circuit board 48.

The light sources 44 of a row are offset transversely with respect to the light sources 44 of the directly lower row in order to produce pixels 34 offset by the distance D as explained above. Thus, it is the relative offset between two adjacent rows of light sources 44 which creates the offset of the distance D between two adjacent rows 32A, 32B, 32C of pixels 34 after projection.

The first optical module 41 also comprises a primary optical element 50 which is arranged longitudinally in front of the light sources 44. The primary optical element 50 is intended to shape the light rays emitted by each light source 44 to produce pixels 34 contiguous with a required light distribution, for example a homogeneous light distribution.

The primary optical element 50 comprises for example an optical device having at least one lens and / or a set of light guides which are intended to collect the light emitted by each light source 44.

Finally, the first optical module 41 includes a projection device 52 which is intended to project an image of each light source 44 after it has been shaped by the primary optical element 50.

The light module 10 here comprises a second optical module 54 which is intended to produce the basic light beam which illuminates the base portion 31 of the overall area 18 which is delimited upwards by the median horizontal axis H.

The second optical module 54 comprises a light source 56 which emits a primary light beam longitudinally towards the front. It is for example a halogen lamp or at least one light-emitting diode.

A primary optical element 58 is arranged longitudinally in front of the light source 56. The primary optical element 58 is intended to shape the primary light beam. It includes in particular means for producing a horizontal rectilinear cutoff line which is intended to extend along the median horizontal axis H and 5 of which a portion forms the lower horizontal section 22 of the cutoff line 20. For example l the primary optical element 58 includes a cover (not shown) which prevents the light rays from propagating above the cut-off line. Such a primary optical element 58 is well known and will not be described in more detail later.

The second optical module 54 also comprises a projection device 60 which is intended to project an image of the light source 56 after it has been shaped by the primary optical element 58.

Claims (15)

1. Light module (10) for a motor vehicle producing a passing beam (14) capable of illuminating a global area (1 8), the passing beam (14) having a cut line (20) comprising a lower transverse section (22) extending along a median horizontal axis (H) and a second upper transverse section (24) extending along an upper horizontal axis (26), connected by an intermediate section (28), at least a determined portion (30) of the overall zone (18), lying between the lower horizontal axis (H) and the upper horizontal axis (26), being divided into at least two rows (32A, 32B, 32C) transverse of several juxtaposed pixels (34) each of which has a quadrilateral shape delimited transversely by two lateral edges (36) and vertically by two horizontal edges (38), the pixels (34) of the same row (32A, 32B, 32C ) having an identical transverse width, each pixel (34) can be activated selectively, characterized in that the pixels (34) of a given row (32B, 32C) are offset horizontally with respect to the pixels (34) of the row (32A, 32B) directly lower by an offset distance (D) such that none of the lateral edges (36) of the pixels (34) of said determined row (32B, 32C) are abutted with a lateral edge (36) of a pixel (34) of the row (32A, 32B) directly below. 2. Light module (10) according to the preceding claim, characterized in that the lateral edges (36) of each pixel (34) are vertical. 3. Light module (10) according to any one of the preceding claims, characterized in that the determined portion (30) extends transversely on either side of a median vertical axis (V) passing through an optical axis (A) of the passing beam (14). 4. light module (10) according to any one of the preceding claims, characterized in that the width of each pixel (34) of a row (32A, 32B, 32C) has a width equal or integer multiple to the width of pixels (34) having the smallest width. 5. Light module (10) according to the preceding claim, characterized in that the offset distance (D) is equal to half the width (Lp) of the pixels (34) of the lower end row (32A). 6. Light module (10) according to the preceding claim, characterized in that the determined portion (30) is divided only into two rows (32A, 32B) of pixels (34). 7. light module (10) according to the preceding claim, characterized in that each pixel (34) of the upper row (32B) has a width (Lp) equal to that of each pixel (34) of the lower row (32A) . 8. Light module (10) according to any one of claims 1 to 5 characterized in that the determined portion (30) is divided only into three rows (32A, 32B, 32C) of pixels (34). 9. Light module (10) according to the preceding claim, characterized in that the pixels (34) of all the rows (32A, 32B, 32C) have the same width (Lp). 10. Light module (10) according to claim 8, characterized in that the intermediate row (32B) has pixels (34) twice as wide as the pixels (34) of the lower end row (32A). 11. Light module (10) according to the preceding claim, characterized in that the upper end row (32C) comprises pixels (34) of the same width as that of the pixels (34) of the intermediate row (32B). 12. Light module (10) according to any one of the preceding claims, characterized in that the passing beam (14) comprises a base beam which illuminates a base portion (31) which is delimited upwards by the lower horizontal axis (H). 13. light module (10) according to any one of the preceding claims, characterized in that the determined portion (30) comprises a transverse repetition of diagonal patterns (40), a diagonal pattern (40) of pixels comprising at least one pixel (34A) lower of the lower end row (32A), at least one intermediate pixel (34B) of the intermediate row (32B) which is arranged above said lower pixel (34A) and which is offset by the distance from offset (D), and at least one upper pixel (34C) of the upper end row (32C) which is arranged above said intermediate pixel 34B and which is offset by distance D, each diagonal pattern (40) comprising a single pixel (34A, 34B, 34C) of greater width, the diagonal patterns (40) whose pixel or upper pixels (34C) are entirely situated vertically under the upper transverse section (24) of the cut line (20 ) being activated selectively. 5 14. Light module (10) according to the preceding claim, characterized in that the light module is capable of operating in a cornering mode of lighting in which the intermediate section is moved laterally as a function of a steering angle of the vehicle by selective ίο activation of diagonal patterns (40) of pixels (34). 15. Light module (10) according to any one of the preceding claims, characterized in that each pixel (34) of the determined portion (30) is wider than it is high.