CN220828782U

CN220828782U - Thick-walled component with visual angle matrix

Info

Publication number: CN220828782U
Application number: CN202322228220.7U
Authority: CN
Inventors: 安林亮
Original assignee: Magneti Marelli Automotive Components Wuhu Co Ltd
Current assignee: Magneti Marelli Automotive Components Wuhu Co Ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-04-23
Anticipated expiration: 2033-08-17

Abstract

The utility model provides a thick-wall piece with a visual angle matrix, which comprises: the light guide device comprises a collimation structure and a light guide section, wherein the collimation structure is arranged at a light inlet end of the light guide section; the light emitting surface of the light guide section is provided with a pattern structure, the pattern structure comprises a scattering pattern and a visual angle pattern, the visual angle pattern comprises a reflecting surface, a refracting surface and a rounded corner surface, and the rounded corner surface is connected between the reflecting surface and the refracting surface; light emitted by the light source enters the light guide section through the collimation structure, and the light entering the light guide section is collimated by the collimation structure: a part of light diffuses through the scattering patterns and exits from the light-emitting surface; the other part of light reaches the reflecting surface, is reflected to the refracting surface by the reflecting surface, is refracted by the refracting surface, and exits from the light-emitting surface. The utility model realizes the reflection and refraction through the reflection surface and the refraction surface simultaneously, and reflects and refracts the light to the angle of visual angle.

Description

Thick-walled component with visual angle matrix

Technical Field

The utility model relates to the technical field of automobile lamps, in particular to a thick-wall part with a visual angle matrix.

Background

Thick-wall parts have been deeply favored by customers, can meet changeable shapes and flexible spaces, have transparent lighting effects, are limited by shapes and regulations, and have the problem of visual angles. Conventional visual angle patterns are typically applied to the outer cover or the front surface of the thick-walled member, and typically require that the visual angle regulations be met by a large angle of light breaking or by making a large step from the front surface of the existing thick-walled member.

The traditional visual angle pattern refracts light to a required place through a refraction principle, is limited by the refraction law, cannot be broken to a large angle, and has high requirements on processing precision. If the refractive surface is uneven or not smooth, efficiency is compromised. Further, this tends to destroy the styling, resulting in a very unsightly appearance that is generally undesirable to customers with strict appearance requirements.

The conventional visual angle pattern is to break off light rays by utilizing a refraction law, as shown in fig. 18, the method has very high processing requirement on the pattern, the light can be better refracted by needing smooth and complete refraction surface, the method is completely dependent on the processing capability of a mold supplier, and meanwhile, the method has low efficiency, and the refraction angle for achieving the visual angle through refraction is very large, so that the light loss is also large. In the critical plane, not only refraction but also reflection exists, and the method has the advantages that the refraction angle is too large, and part of light is reflected in the critical plane, so that the efficiency is also reduced.

Disclosure of utility model

In view of the drawbacks of the prior art, it is an object of the present utility model to provide a thick-walled member with a matrix of visibility angles.

According to the utility model, a thick-wall member with a visual angle matrix is provided, comprising: the light guide device comprises a collimation structure and a light guide section, wherein the collimation structure is arranged at a light inlet end of the light guide section;

the light emitting surface of the light guide section is provided with a pattern structure, the pattern structure comprises a scattering pattern and a visual angle pattern, the visual angle pattern comprises a reflecting surface, a refracting surface and a rounded corner surface, and the rounded corner surface is connected between the reflecting surface and the refracting surface;

Light emitted by the light source enters the light guide section through the collimation structure, and the light entering the light guide section is collimated by the collimation structure: a part of light diffuses through the scattering patterns and exits from the light-emitting surface; the other part of light reaches the reflecting surface, is reflected to the refracting surface by the reflecting surface, is refracted by the refracting surface, and exits from the light-emitting surface.

Preferably, the reflection angle between the light rays collimated by the collimating structure and the reflecting surface is larger than the total reflection critical angle of the thick-wall member.

Preferably, the light enters the refracting surface at an angle of 90 ° to 105 °.

Preferably, the scattering patterns and the visible angle patterns are arranged at intervals.

Preferably, the pattern structure is provided with a plurality of rows or columns.

Preferably, the pattern structure is provided with a plurality of rows, and the pattern structure of a single row adopts any one of the following arrangement modes;

mode a: consists of the scattering pattern or the visual angle pattern;

Mode b: consists of the scattering pattern and the visual angle pattern.

Preferably, when the pattern structure is provided with a plurality of columns, the pattern structure in a single column adopts any one of the following arrangement modes;

Mode c: consists of the scattering pattern or the visual angle pattern;

mode d: consists of the scattering pattern and the visual angle pattern.

Preferably, each row of the pattern structures is arranged in a mode a, and specifically any one of the following arrangement modes are adopted:

Mode a1: the scattering patterns in a plurality of rows and the visual angle patterns in a plurality of rows are staggered;

Mode a2: one side of the most edge line is provided with the visible angle pattern, and the other lines of pattern structures are provided with the scattering patterns;

Mode a3: the pattern structures at the two most edge lines are all arranged as the visible angle patterns, and the pattern structures at the other lines are all arranged as the scattering patterns.

Preferably, each column of the pattern structure adopts a mode c to set the pattern structure, and specifically adopts any one of the following setting modes:

mode c1: the scattering patterns in a plurality of columns and the visual angle patterns in a plurality of columns are staggered;

Mode c2: one column of pattern structures at the most edge of one side is arranged as the visible angle pattern, and the other columns of pattern structures are all arranged as the scattering pattern;

Mode c3: the pattern structures at the two most edge columns are all arranged as visible angle patterns, and the pattern structures at the other columns are all arranged as scattering patterns.

Preferably, the pattern structures on two most edge rows are all arranged in a mode b, and the pattern structures on the other rows are all arranged as the scattering patterns.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model adopts the small-size dot matrix type visible angle pattern array to be added on the thick-wall member, thereby obtaining high-efficiency visible angle regulation and uniform lighting effect, and the visible angle pattern has no strict requirement on processing precision as compared with the transmission type visible angle pattern, so that on one hand, the visible angle regulation can be met efficiently, on the other hand, the integral lighting effect is not influenced on the premise of not damaging the integral modeling, and the high-efficiency and beautiful visible angle array can be obtained.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a front view of a thick-walled member with a matrix of visibility angles;

fig. 2 is a partial enlarged view of a portion a in fig. 1;

fig. 3 is a partial enlarged view of a portion B in fig. 1;

FIG. 4 is a cross-sectional view taken along line F-F in FIG. 1;

FIG. 5 is a top view of a thick-walled member with a matrix of visibility angles;

fig. 6 is a partial enlarged view of a portion C in fig. 5;

FIG. 7 is a bottom view of a thick-walled member with a matrix of visibility angles;

FIG. 8 is a side view of a thick-walled member with a matrix of visibility angles;

FIG. 9 is a cross-sectional view taken along line D-D of FIG. 8;

FIG. 10 is a cross-sectional view taken along line E-E of FIG. 8;

FIG. 11 is a view of one of the concentrators of FIG. 10;

FIG. 12 is a schematic diagram of a visual angle pattern;

FIG. 13 is a front view of a single visual angle pattern;

FIG. 14 is a first view of the light path of the visible pattern;

FIG. 15 is a second view of the light path of the visible pattern;

FIG. 16 is a third view of the light path of the visible angle pattern;

FIG. 17 is a fourth light path diagram of a visual angle pattern;

fig. 18 is a light path diagram of a general refractive pattern.

The figure shows:

Scattering pattern 1 closure surface 204

Collimation structure 3 of pattern 2 with visual angle

Reflection surface 201 light guide section 4

Rounded 202 light exit surface 401

Refractive surface 203

Detailed Description

The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.

Example 1:

as shown in fig. 1 to 16, the present embodiment provides a thick-walled member with a matrix of visibility, comprising: the light-emitting surface 401 of the light guide section 4 is provided with a pattern structure, the pattern structure comprises a scattering pattern 1 and a visual angle pattern 2, the visual angle pattern 2 comprises a reflecting surface 201, a refracting surface 203 and a rounded corner surface 202, and the rounded corner surface 202 is connected between the reflecting surface 201 and the refracting surface 203. The scattering patterns 1 and the visual angle patterns 2 are arranged at intervals.

Light emitted by the light source enters the light guide section 4 through collimation of the collimation structure 3, and the light entering the light guide section 4: a part of light is diffused through the scattering pattern 1 and exits from the light exit surface 401; the other part of the light reaches the reflecting surface 201, is reflected by the reflecting surface 201 to the refracting surface 203, is refracted by the refracting surface 203, and exits from the light exit surface 401.

The angle of reflection of the light collimated by the collimating structure 3 with the reflecting surface 201 is greater than the critical angle of total reflection of the thick-walled member. Light enters the refractive surface 203 at an angle of 90 deg. to 105 deg..

Example 2:

This embodiment differs from embodiment 1 in that the pattern structure is provided with a plurality of rows or columns.

The pattern structure is provided with a plurality of rows, and the single-row pattern structure adopts any one of the following arrangement modes: mode a: consists of a scattering pattern 1 or a visual angle pattern 2; mode b: consists of a scattering pattern 1 and a visual angle pattern 2.

When the pattern structure is provided with a plurality of columns, the single-column pattern structure adopts any one of the following arrangement modes: mode c: consists of a scattering pattern 1 or a visual angle pattern 2; mode d: consists of a scattering pattern 1 and a visual angle pattern 2.

Each row of pattern structures are arranged in a mode a, and specifically any one of the following arrangement modes is adopted: mode a1: the scattering patterns 1 and the visual angle patterns 2 are staggered; mode a2: one line of the most edge at one side is provided with a visual angle pattern 2, and the other lines of pattern structures are provided with scattering patterns 1; mode a3: the pattern structures at the two side edges are all provided with visible angle patterns 2, and the other pattern structures are all provided with scattering patterns 1.

Each column of pattern structures adopts a pattern structure arranged in a mode c, and specifically adopts any one of the following arrangement modes: mode c1: the scattering patterns 1 and the visual angle patterns 2 are staggered; mode c2: the pattern structure of the most edge line at one side is set as a visual angle pattern 2, and the pattern structures of the other lines are all set as scattering patterns 1; mode c3: the pattern structures at the two side edges are all provided with visible angle patterns 2, and the other pattern structures are all provided with scattering patterns 1.

Example 3:

The present embodiment is different from embodiment 2 in that two outermost line pattern structures are each provided in the manner b, the single line pattern structure is composed of the scattering pattern 1 and the visible angle pattern 2, and the remaining line pattern structures are each provided as the scattering pattern 1.

Example 4:

The person skilled in the art will understand this embodiment as a more specific description of embodiment 1, embodiment 2, embodiment 3.

The embodiment provides a thick-walled member with a matrix of visibility, the thick-walled member comprising: the light source comprises a light source, a light guide section and a light emitting surface, wherein the light source is used for emitting light rays, and the light source is used for emitting the light rays from the light emitting surface through the light guide section in parallel.

The light emergent surface is provided with common scattering patterns and visual angle patterns, and the common scattering patterns are used for scattering light rays, so that the emergent light rays are more uniform; the viewing angle pattern includes a reflective surface 201, a refractive surface 203, and a rounded surface 202, the rounded surface 202 being connected between the reflective surface 201 and the refractive surface 203.

Further, the reflection angle θ ₁ between the light and the reflecting surface 201 is larger than the total reflection critical angle C of the thick-wall material, the light can be reflected by the reflecting surface 201, and the light can be transmitted out only when the angle is larger than the total reflection critical angle.

Further, the light rays enter the refractive surface 203 at an angle perpendicular to the refractive surface 203 with an angle of 90 ° to the refractive surface 203.

The visual angle patterns can be arranged at any position of the light-emitting surface of the thick-wall member, can be arranged at intervals with the common scattering patterns, and can be arranged in whole rows or whole columns. In the embodiment, the visual angle patterns are arranged at the uppermost row and the lowermost row of the light emitting surface (as shown in fig. 1), and the common scattering patterns are arranged between the upper row and the lower row of visual angle patterns.

The embodiment also provides a design method of the visible angle pattern, which comprises the following steps:

firstly, a condenser irradiates parallel light to a light-emitting surface;

secondly, determining a total reflection critical angle C according to the material selected by the thick-wall member and the total reflection law, and determining a reflection surface 201 by selecting a reflection angle theta ₁ of the pattern reflection surface with a visual angle to be larger than the critical angle C;

in a third step, the refractive surface 203 is determined such that the angle of incidence of the light ray with respect to the refractive surface 203 is 90 °.

And fourthly, copying the single visual angle pattern, so that the single visual angle pattern can be used as a visual angle matrix, and the visual angle pattern and the common scattering pattern can be arranged on the light-emitting surface of the thick-wall member in any form.

Fig. 1 is a front view of a thick-walled member with a matrix of visibility, fig. 2 is a partially enlarged view of the upper row of patterns, fig. 3 is a partially enlarged view of the lower row of patterns, and fig. 4 is a sectional view of F-F in fig. 1. Fig. 5 is a plan view of the thick-walled member with the matrix of visibility, fig. 6 is an enlarged partial view of the upper row of patterns of fig. 5, and fig. 7 is a bottom view of the thick-walled member with the matrix of visibility.

Fig. 8 is a side view of a thick-walled member with a matrix of visibility angles, fig. 9 is a D-D cross-sectional view of fig. 8, and fig. 10 is a cross-sectional view of fig. 8E-E.

It can be seen from fig. 1 that only the uppermost and lowermost rows of patterns have a matrix of visible angles, but in different embodiments the matrix of visible angles may also be provided with 2 rows, 3 rows, etc., or only one uppermost/lowermost row. With reference to fig. 4 and 10, the uppermost and lowermost patterns of the thick-walled member are selected to increase the viewing angle matrix because the two rows of patterns are relatively far from the center, which does not affect the overall regulations or the overall modeling. As can be seen from fig. 2, 3 and 5, the visual angle pattern is arranged with regular thick-walled member patterns spaced apart, not an entire row of visual angle patterns. The visual angle pattern is very similar to the conventional thick-wall piece pattern in size and appearance, so that the static and lighted appearance can be kept consistent, and the modeling is not influenced.

As shown in fig. 4, the visual angle pattern is not in the center of the front surface of the thick-walled member corresponding to the LED light source, but in the lowermost line of patterns. With reference to fig. 10, fig. 10 is a side view cut-away of the last row of thick-walled members, the LED light sources not being shown in the figure because it is the lowest row. As can be seen in both fig. 5 and 7, the rear surface of the thick-walled member is the condenser, so the rear surface in fig. 10 is also part of the condenser, which also has a converging effect on the light. FIG. 11 is a view taken from one of the concentrators of FIG. 10, with rays L1 and L2 being collimated by the concentrator. It can be seen from fig. 11 that the light is nearly collimated in the thick-walled member before reaching the front surface pattern.

With reference to fig. 6 and 11, a view angle pattern of the front surface pattern is taken, and fig. 12 is a schematic diagram of the view angle design. Fig. 12 is a plan view in the traveling direction, and since the collimator is behind, the light from behind is collimated light L3 in the traveling direction, and L3 is parallel to L1 and L2. Fig. 12 shows a cross-sectional top view of the visible pattern 1, each of the inner sides representing a plane, namely, the reflecting surface 201, the refracting surface 203, and the rounded corner surface 202, as shown in fig. 13. All the perspective matrices can be lofted or further improved or duplicated for use based on fig. 12.

As shown in fig. 12, the reflection surface 201 is a reflection surface, the refraction surface 203 is a transmission surface, X1 is a normal line of the reflection surface 201, and X2 is a normal line of the refraction surface 203. The reflecting surface 201 reflects the collimated light ray L3 from the collimator for the first time to obtain a reflected light ray L4, and the reflected light ray L4 is refracted by the transmissive refraction surface 203 and then is emitted from the visible angle pattern to obtain a light ray L5, wherein the light ray L5 is the visible angle direction light ray meeting the regulations.

The angle of the reflecting surface 201 needs to consider the principle of total reflection, and according to the law of total reflection, when the incident angle of light exceeds a critical angle when light goes from an optically dense medium to an optically sparse medium, the phenomenon of total reflection is reflected at the medium interface. The material medium of the case is PC, and the total reflection critical angle C is calculated to be 42.05 degrees according to the total reflection law C=arcsin (1/n). So angle θ ₁ needs to be greater than 42.05 to allow total reflection of light, in this case angle θ ₁ is chosen to be 48 degrees so that light L3 is almost totally reflected. The angle θ ₁ is the angle between the incident light L3 and the normal X1, and the normal X1 is perpendicular to the reflecting surface 201. From this layer relationship, knowing the angle θ ₁, the angle of the reflecting surface 201 can be obtained, and the position of the reflecting surface 201 can be determined. The position of the reflective surface 201 is determined and the first reflective surface representing the visual angle pattern is determined.

Although the angle θ ₁ is larger than the critical angle C, it is not preferable that the larger the angle θ ₁ is, if the angle θ ₁ is too large, the smaller the included angle between the light ray L4 and the reflecting surface 201 will be, the easier the light ray L4 approaches the position of the rounded corner surface 202, and the rounded corner surface 202 is set for the feasibility of the pattern processing for viewing angle, if the closer the L4 approaches the position, the efficiency is greatly reduced, and the requirement of viewing angle is not met. As shown in fig. 14, θ ₁ is 60 °, the outgoing angle of the light L5 is relatively small, and the light is lost due to the influence of the rounded corners, which is not beneficial to the visual angle effect.

Further, the light ray L4 is a total reflection light ray of the light ray L3, and at this time, the light ray L4 enters the refraction surface 203, the normal direction of the refraction surface 203 is X2, and according to the refraction law, the light ray L5 passes through the refraction surface 203 and then comes out, and the light ray L5 is the view angle light ray. The angle of the light L5 is affected by the refractive surface 203, and the angle of the refractive surface 203 is determined by the draft angle required by the viewing angle engineering, the overall size of the viewing angle, and the efficiency of the outgoing light. Since the visible pattern itself is 1mm by 1mm in size to accommodate the thick-walled pattern, the refractive surface 203 needs to have as high a surface utilization as possible. If on the basis of fig. 12, if the refractive surface 203 is steeper and the angle θ ₄ is an acute angle as shown in fig. 15, then the normal X2 appears below the light ray L4, the outgoing light ray and the incoming light ray lie on both sides of the normal according to the snell theorem, the light ray L5 below the normal X2 is equal to the deflection of the light ray L5 in the opposite direction of the viewing angle, and the opposite direction acts on the light ray L4, which is not reasonable, so the angle between the refractive surface 203 and the light ray L4 cannot be an acute angle.

It is also disadvantageous for the viewing angle design if the angle between the refractive surface 203 and the light ray L4 is a relatively large obtuse angle, as shown in fig. 16. Since the closed surface 204 has a3 degree draft angle for the mold feasibility of the pattern, and since the pattern size is limited to 1mm, the position of the closed surface 204 is fixed, when the refractive surface 203 is too large, the effective area of the refractive surface 203 will be reduced because the refractive surface 203 needs to intersect with the closed surface 204, which is not beneficial to the visual angle design, and the refractive surface 203 cannot be too large. The closure surface 204 is such that it forms a closed solid with no substantial optical effect.

When the angle between the refractive surface 203 and the light L4 is a right angle, as shown in fig. 17, the light L5, the light L4 and the normal X2 are all coincident, and at this time, the energy of the light L5 with the visual angle is strongest and the utilization rate is highest.

When L5 needs to further obtain a larger deflection angle while satisfying the visible pattern size and mold feasibility, the angle θ ₄ between the refractive surface 203 and the light L4 needs to be appropriately larger than 90 °, and the case angle θ ₄ is actually 105 °.

Further, the refraction surface 203 is not a plane but a curved surface with a certain diffusion angle in each direction, so that the visible angle pattern can be further diffused after passing through the refraction surface 203, and the area of the visible angle pattern can be better supplemented. In this case, the refractive surface 203 spreads by 5 ° from side to side and up and down by 5 °.

When one visual angle pattern is designed, all other positions can copy the single visual angle pattern, so that the visual angle pattern can be used as a visual angle matrix, and is very simple and convenient. On the other hand, if the visual angle pattern is not considered in the original design but the visual angle pattern is added after the mold is opened, it is also possible to add the visual angle pattern, because the visual angle pattern is designed by taking the feasibility of mold repair into consideration. For the mould, the material reduction is simpler than the material addition, the mould modification cost is lower, and the feasibility is better.

In the embodiment, reflection and refraction are realized through the reflection surface and the refraction surface simultaneously, and light rays are reflected and then refracted to a visual angle.

This embodiment deflects the light in a desired direction by a combination of reflection and refraction. The first step uses the reflection theorem to reflect light to a certain angle. The second step uses the law of refraction to refract the light of the previous step to the desired viewing angle. The reflection and refraction are realized in one module at the same time, and the module does not need to be split into 2 pieces, so that the module is efficient and practical.

The visual angle of the lamp function is to ensure that the function can be observed by human eyes within a certain range, so that the maximum observation angle exists, and the angle is the visual angle of the function. In optical designs, the angle involved is particularly large, such as an outside viewing angle of 80 ° for position lamps, while 15 ° up and down. The qualified lamp not only needs to meet the light distribution angle, but also meets the visual angle regulation, so that meeting the visual angle of light distribution is also a difficulty in optical design.

The utility model realizes the reflection and refraction through the reflection surface and the refraction surface simultaneously, and reflects and refracts the light to the angle of visual angle.

In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the utility model and the features of the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. A thick-walled member having a matrix of visibility angles, comprising: the light guide device comprises a collimation structure (3) and a light guide section (4), wherein the collimation structure (3) is arranged at the light inlet end of the light guide section (4);

the light emitting surface (401) of the light guide section (4) is provided with a pattern structure, the pattern structure comprises a scattering pattern (1) and a visual angle pattern (2), the visual angle pattern (2) comprises a reflecting surface (201), a refracting surface (203) and a rounded corner surface (202), and the rounded corner surface (202) is connected between the reflecting surface (201) and the refracting surface (203);

Light emitted by the light source is collimated by the collimating structure (3) and enters the light guide section (4), and the light entering the light guide section (4) is collimated by the light source: a part of light is diffused through the scattering patterns (1) and exits from the light-emitting surface (401); the other part of light reaches the reflecting surface (201), is reflected to the refracting surface (203) through the reflecting surface (201), is refracted through the refracting surface (203), and is emitted from the light emitting surface (401).

2. Thick-walled element with a matrix of visibility according to claim 1 characterized in that the angle of reflection of the light collimated by the collimating structure (3) with the reflecting surface (201) is greater than the critical angle for total reflection of the thick-walled element material.

3. Thick-walled element with a matrix of visibility according to claim 1 characterized in that light enters the refractive surface (203) at an angle of 90-105 °.

4. Thick-walled component with a visual angle matrix according to claim 1 characterized in that the scattering pattern (1) and the visual angle pattern (2) are arranged at intervals.

5. Thick-walled element with a matrix of visibility angles according to claim 1 characterized in that the pattern structure is provided with rows or columns.

6. The thick-walled member having a matrix of visual angles according to claim 5 wherein the pattern structures are arranged in rows, a single row of the pattern structures being arranged in any of the following ways;

Mode a: consists of the scattering pattern (1) or the visual angle pattern (2);

mode b: is composed of the scattering pattern (1) and the visual angle pattern (2).

7. The thick-walled member having a matrix of visual angles according to claim 5 wherein when the pattern structure is provided with a plurality of columns, a single column of the pattern structure is provided in any one of the following arrangements;

Mode c: consists of the scattering pattern (1) or the visual angle pattern (2);

mode d: is composed of the scattering pattern (1) and the visual angle pattern (2).

8. A thick-walled member having a matrix of visibility angles as claimed in claim 6 wherein each row of said pattern structures is provided in pattern a, in particular in any of the following patterns:

Mode a1: the scattering patterns (1) and the visual angle patterns (2) are arranged in a staggered manner;

Mode a2: one side of the most edge line is provided with the visible angle pattern (2), and the other lines of pattern structures are provided with the scattering patterns (1);

mode a3: the pattern structures at the two most edge lines are all arranged as visible angle patterns (2), and the pattern structures at the other lines are all arranged as scattering patterns (1).

9. The thick-walled member having a matrix of visibility angles of claim 7 wherein each of said pattern structures is provided in pattern c, in particular in any of the following:

Mode c1: the scattering patterns (1) and the visual angle patterns (2) are arranged in a staggered manner;

Mode c2: one column of pattern structures at the most edge of one side is arranged as the visible angle pattern (2), and the other columns of pattern structures are all arranged as the scattering pattern (1);

Mode c3: the pattern structures at the two most edge columns are all arranged as visible angle patterns (2), and the pattern structures at the other columns are all arranged as scattering patterns (1).

10. Thick-walled element with a matrix of visibility according to claim 6 characterized in that the pattern structures of the two most marginal rows are each arranged in manner b and the pattern structures of the remaining rows are each arranged as scattering pattern (1).