Projection lamp assembly and vehicle

Abstract

The invention provides a projection lamp assembly and a vehicle, and belongs to the technical field of automobile parts, the projection lamp assembly comprises at least two projection lamp modules arranged adjacently, and each projection lamp module is sequentially provided with a light source, an illumination lens group, a film assembly and an imaging lens group in the optical axis direction; optical axes of the light sources are arranged in parallel; the deflection lens is arranged at the downstream of the imaging lens group along the optical axis direction; light beams of each projection lamp module can form a projection pattern on a projected surface, and light beams of at least one projection lamp module can penetrate through the deflection lens and irradiate on the projected surface to form a projection pattern which is integrally deflected; and the optical axis corresponding to any offset projection pattern on the projected surface is not parallel to the optical axes corresponding to other projection patterns. According to the projection lamp assembly, the coverage area of the projection pattern projected by the whole projection lamp assembly is enlarged, so that the problem that the visual effect of projection is affected due to small projection pattern in the prior art is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive parts, and relates to a projection lamp assembly, in particular to a projection lamp assembly and a vehicle. Background Art

[0002] Currently, in-vehicle projection lamps are widely used. When installed outside the vehicle, they can be used as dynamic welcome lamps or ground indicator lamps, projecting various patterns, texts, or logos on the ground. At the same time, they can also illuminate the area around the car door to help drivers and passengers get on and off the vehicle safely at night or in low-light environments. When installed inside the vehicle, they can be used as ambient lamps to add an ambient atmosphere to the vehicle interior.

[0003] Generally speaking, given the installation position and installation space, there is an upper limit to the size of the projection pattern produced by a projection lamp assembly composed of a single projection lamp module on the projection surface. At this time, if you still want to increase the size of the projection pattern, the following methods are available in the prior art:

[0004] First, install one or more additional projection lamps at other positions on the vehicle. Each projection lamp irradiates different positions in the projection area, and finally, multiple projection patterns are combined to form a complete projection pattern. Obviously, the defect of this solution is that additional projection lamps are added at other positions, which not only requires additional space at other positions on the vehicle but also directly doubles the cost.

[0005] Second, use multiple projection lamp modules. The multiple projection lamp modules are relatively inclined to stagger the patterns and irradiate different positions in the projection area respectively. Finally, multiple projection patterns are combined to form a complete projection pattern. The defect of this solution is that in order to adapt to the inclination of the projection lamp module, the respective PCB substrates and light sources also need to be relatively inclined, which will undoubtedly make the structure of the projection lamp more complex and increase a lot of redundant space, and the requirement for assembly accuracy is relatively increased a lot. Summary of the Invention

[0006] The object of the present invention is to address the above problems existing in the prior art and propose a projection lamp assembly with a larger projection area and less occupied space.

[0007] The object of the present invention can be achieved by the following technical solutions: A projection lamp assembly, comprising:

[0008] At least two adjacent projection lamp modules, the projection lamp modules are sequentially provided with a light source, an illumination lens group, a film component, and an imaging lens group along the optical axis direction; the optical axes of the respective light sources are arranged in parallel;

[0009] A deflection lens, the deflection lens is arranged downstream of the imaging lens group along the optical axis direction;

[0010] The light beams of each projection lamp module can form a projection pattern on the projection surface. Among them,

[0011] The light beam of at least one projection lamp module can pass through the deflection lens and irradiate on the projection surface to form an overall offset projection pattern, and make the optical axis corresponding to any offset projection pattern on the projection surface not parallel to the optical axes corresponding to other projection patterns.

[0012] In the above projection lamp assembly,

[0013] The incident light cone of the projection lamp module is deflected by the deflection lens by a first deflection angle (β) relative to the incident optical axis (AA') and forms an outgoing light cone with an outgoing optical axis (BB');

[0014] The deflection lens includes an incident surface and an outgoing surface. The light rays at the incident optical axis (AA') in the incident light cone are deflected by one angle respectively when passing through the incident surface refraction and the outgoing surface refraction, and the deflection directions of the two angles are the same as the deflection direction of the first deflection angle.

[0015] In the above projection lamp assembly, both the incident surface and the outgoing surface of the deflection lens are planes; a first bevel angle (θ1) is formed between the incident surface of the deflection lens and the incident optical axis (AA'), and a second bevel angle (θ2) is formed between the outgoing surface of the deflection lens and the outgoing optical axis (BB');

[0016] In the above projection lamp assembly, in a preferred solution, the ratio between the second bevel angle (θ2) and the first bevel angle (θ1) is greater than or equal to 0.98 and less than or equal to 1.2.

[0017] Further, the ratio between the second bevel angle (θ2) and the first bevel angle (θ1) is greater than or equal to 1 and less than or equal to 1.1.

[0018] In the above projection lamp assembly, in another preferred solution, the first bevel angle (θ1) = 90° - A1 ± 4°, and the second bevel angle (θ2) = 90° - B1 - β ± 4°;

[0019] Among them, A1 and B1 are the least squares solutions of the following overdetermined equations,

[0020]

[0021] In the equations, A is the acute angle formed between the perpendicular line (LL') and the incident surface, B is the acute angle formed between the perpendicular line (LL') and the outgoing surface, the perpendicular line (LL') is the line on the deflection lens perpendicular to the incident optical axis (AA'); n is the refractive index of the deflection lens, α is the light cone angle of the incident light cone, and β is the angle between the incident optical axis (AA') and the outgoing optical axis (BB'), that is, the first deflection angle.

[0022] In the above projection lamp assembly, in another preferred solution, the first inclined plane angle (θ1) = 90° - A2 ± 4°, and the second inclined plane angle (θ2) = 90° - B2 - β ± 4°;

[0023] wherein, A2 and B2 are the solutions of the following system of equations,

[0024]

[0025] In the system of equations, A is the acute angle formed between the perpendicular line (LL') and the incident surface, B is the acute angle formed between the perpendicular line (LL') and the exit surface, and the perpendicular line (LL') is the line on the deflection lens that is perpendicular to the incident optical axis (AA'); n is the refractive index of the deflection lens, α is the light cone angle of the incident light cone, and β is the angle between the incident optical axis (AA') and the exit optical axis (BB'), that is, the first deflection angle.

[0026] In the above projection lamp assembly, the number of light sources and imaging lens groups is multiple, and the multiple light sources correspond to the multiple imaging lens groups one by one. Among them, the multiple light sources are located in the same plane, and the incident optical axes (AA') of the light cones formed after the light generated by each light source passes through the corresponding imaging lens group are parallel to each other.

[0027] In the above projection lamp assembly, the diameter size of the imaging lens group is greater than 2 mm; the deflection lens is made of glass or plastic.

[0028] The present invention also provides a vehicle, including the above projection lamp assembly.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] (1) By deviating the projection pattern projected by one of the multiple projection lamp modules from the projection patterns projected by other projection lamp modules, the coverage area of the projection pattern projected by the entire projection lamp assembly is expanded;

[0031] (2) When the light rays at the incident optical axis (AA') in the incident light cone are refracted by the incident surface and the exit surface respectively, they are deflected by an angle once, and the deflection directions of the two angles are the same as the deflection direction of the first deflection angle. On the one hand, the propagation direction of the light rays can be effectively controlled, so that the light rays are finally focused or diverged in the expected direction. On the other hand, the aberration is reduced, the imaging quality is guaranteed, and the degree of distortion is reduced;

[0032] (3) The incident surface and the exit surface of the deflection lens are both flat surfaces, with a simple structure and convenient processing. By controlling the angles between the incident surface and the exit surface and the optical axis, the degree of distortion is controlled, and the influence of errors is small;

[0033] (4) By setting the number of multiple light sources and multiple imaging lens groups, with the multiple light sources corresponding to the imaging lens groups one by one and the incident optical axes of the light cones being parallel to each other, the light efficiency, uniformity, and accuracy of the optical system can be significantly improved, while reducing optical interference, simplifying the design, and enhancing the flexibility of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of a projection lamp assembly according to the present invention.

[0035] Figure 2 is a schematic optical path diagram of a deflection lens structure with missing patterns.

[0036] Figure 3 is a simulation diagram of the projection pattern of a projection lamp assembly without a deflection lens.

[0037] Figure 4 is Figure 3 a simulation diagram of the projection pattern of the projection lamp assembly in

[0038] Figure 5 is Figure 3 a simulation diagram of the projection pattern of the projection lamp assembly in

[0039] In the figures, 10 is a light source; 20 is an illumination lens group; 30 is a film component; 40 is an imaging lens group; 50 is a deflection lens. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following are specific embodiments of the present invention and, in conjunction with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] Embodiment: As Figures 1-5 shown, a projection lamp assembly includes:

[0043] At least two adjacent projection lamp modules, and the projection lamp modules are sequentially provided with a light source 10, an illumination lens group 20, a film component 30, and an imaging lens group 40 along the optical axis direction; the optical axes of the light sources 10 are arranged in parallel;

[0044] A deflection lens 50, and the deflection lens 50 is arranged downstream of the imaging lens group 40 along the optical axis direction;

[0045] The light beams of each projection lamp module can form a projection pattern on the projection surface, wherein:

[0046] The light beam of at least one projection lamp module can pass through the deflection lens 50 and illuminate the projection surface to form an overall offset projection pattern, and make the optical axis corresponding to any offset projection pattern on the projection surface non-parallel to the optical axes corresponding to other projection patterns.

[0047] In this embodiment, the projection pattern projected by one of the multiple projection lamp modules is deviated from the projection patterns projected by other projection lamp modules, thereby expanding the coverage area of the projection pattern projected by the entire projection lamp assembly, thereby expanding the field of view of the projection lamp assembly in disguise.

[0048] Generally speaking, by deflecting the optical axis of the light beam of the projection lamp module through the deflection lens 50, the projection pattern can be deflected as a whole in theory. However, in the actual research process, it was found that when the light cone angle and the deflection angle of the projection lamp module are large, only the deflection angle of the optical axis is paid attention to without considering the shape and angle of the incident surface and the output surface of the deflection lens 50. In the best case, the projection pattern on the projected surface will be obviously distorted, and in the worst case, part of the projection pattern will be missing. The core reason is related to the law of refraction and the fact that the projection lamp module emits a light beam with a light cone angle.

[0049] Assume that the direction of the light is air → lens (if the direction of the light is lens → air, the incident angle and the refraction angle in the table below can be swapped). According to the law of refraction, sin (incident angle) = n*sin (refraction angle), where n is the refractive index of the deflection lens (assuming n = 1.5). According to different incident angles, the corresponding refraction angle and deflection angle can be converted as shown in the following table:

[0050]

[0051] It can be seen from the above table that the deflection angle is not fixed. The larger the incident angle, the larger the deflection angle.

[0052] The light beam of the projection lamp module actually undergoes two refractions when passing through the deflection lens 50. The first refraction is from the air with lower density into the lens with higher density, and the second refraction is from the lens into the air in reverse.

[0053] by Figure 2 For example, in this example, the incident surface and the exit surface of the deflection lens 50 are perpendicular to the optical axis and the oblique surface, respectively. Assume that the horizontal rightward light in the light beam, that is, the light at the optical axis, does not change its angle after passing through the incident surface of the deflection lens 50, but can be deflected by a preset angle after passing through the exit surface. Since the light beam is actually a light cone, the light beam includes oblique upward light and oblique downward light. Figure 2It can be seen that after the upward oblique light undergoes the first refraction, the incident angle at the second refraction is larger than the incident angle at the optical axis, resulting in a larger deflection angle after the second refraction than the deflection angle after the second refraction at the optical axis. It is precisely because the deflection angles of light at different angles in the light beam are inconsistent that the projection pattern is distorted.

[0054] In general, if the upper and lower limits of the deflection angles of the light rays in the beam are large, the projection pattern will be obviously distorted, such as Figure 4 Shown relative Figure 3 If the upper and lower limits of the deflection angle of each light beam in the beam are small, the deformation of the projection pattern is also small, such as Figure 5 As shown, the slight deformation does not even affect the projection pattern effect. However, when the incident angle of the second refraction of the light beam obliquely upward is greater than 41.81°, the light will be totally reflected when it contacts the exit surface inside the deflection lens 50, resulting in the aforementioned projection pattern being partially missing.

[0055] In order to avoid partial pattern loss and reduce projection pattern distortion as much as possible, in the present embodiment, the incident light cone of the projection lamp module is deflected by the deflection lens 50 relative to the incident light axis AA' by a first deflection angle β to form an output light cone of the output light axis BB'; the deflection lens 50 includes an incident surface and an output surface, and the light at the incident light axis AA' in the incident light cone is deflected once when refracted by the incident surface and the output surface respectively, and the deflection directions of the two angles are the same as the deflection direction of the first deflection angle. It can be understood that the smaller the single deflection angle of the light at the optical axis in the light beam is, the smaller the deflection angle of the edge light in the light beam is.

[0056] When the projection pattern projected by one of the multiple projection lamp modules forms an overall offset projection pattern on the projection surface, the projection pattern is more or less distorted. It is just a matter of the degree of distortion and whether it will affect the final projection effect. In order to correct the degree of distortion of the projection pattern of the projection lamp assembly, the following two methods can generally be used:

[0057] First, by using the difference between the actual projection pattern and the designed projection pattern, the film pattern on the film is reversely designed and corrected, and finally the actual projection pattern is close to the designed projection pattern. Although this method can correct the distortion of the projection pattern, the brightness uniformity caused by the distortion of the projection pattern cannot be improved. The normal projection pattern is Figure 4 The uniformity is normal, while the projection pattern with greater distortion is as follows Figure 3 As shown, the upper semicircular pattern is severely distorted, resulting in an increase in area, which in turn reduces the brightness and causes the uniformity of the projected pattern to deteriorate;

[0058] Second, a deflecting lens with a free-form surface can be used to adjust the beam shape and reduce distortion and aberration. The disadvantage of this method is that not only the structural design is relatively complex, but also the processing difficulty of the deflecting lens is too high, resulting in a very high manufacturing cost of the deflecting lens.

[0059] Therefore, in order to simplify the design, in this embodiment, both the incident surface and the exit surface of the deflecting lens 50 are flat surfaces. The flat surface has a simple structure and is convenient for processing. By controlling the angles between the incident surface and the exit surface and the optical axis, the degree of distortion can be controlled, and the error influence is small, which is easy to design and popularize.

[0060] In this embodiment, each technical index can Figure 1 be used as a reference. AA' is the incident optical axis direction, with the direction from left to right being positive. The exit optical axis BB' is deflected counterclockwise relative to the incident optical axis AA' to form a positive first deflection angle β. The incident surface of the deflecting lens 50 forms a first inclined surface angle θ1 with the incident optical axis AA', and the exit surface of the deflecting lens 50 forms a second inclined surface angle θ2 with the exit optical axis BB'. When the three technical indexes of the light cone angle α of the incident light cone, the refractive index n of the deflecting lens 50, and the first deflection angle β are all determined, the degree of distortion of the projection pattern is only related to the values of the first inclined surface angle θ1 and the second inclined surface angle θ2. In order to further reduce the degree of distortion, this embodiment provides 3 specific implementation manners to determine the values of the first inclined surface angle θ1 and the second inclined surface angle θ2:

[0061] 1. The first inclined surface angle θ1 = 90° - A1 ± 4°, and the second inclined surface angle θ2 = 90° - B1 - β ± 4°; where A1 and B1 are the least squares solutions of the following overdetermined equations.

[0062]

[0063] In the equations, referring to Figure 1 as shown, A is the acute angle formed between the perpendicular line LL' and the incident surface. This angle turns from LL' to the incident surface at an acute angle, with counterclockwise being positive and clockwise being negative; B is the acute angle formed between the perpendicular line LL' and the exit surface. This angle turns out of the exit surface from LL' at an acute angle, with clockwise being positive and counterclockwise being negative; the perpendicular line LL' is the line on the deflecting lens 50 that is perpendicular to the incident optical axis AA'; n is the refractive index of the deflecting lens 50, α is the light cone angle of the incident light cone, and β is the angle between the incident optical axis AA' and the exit optical axis BB', that is, the first deflection angle. It turns from AA' to BB' at an acute angle, with counterclockwise being positive and clockwise being negative.

[0064] In addition, due to the existence of force majeure factors, such as the processing error of the deflecting lens 50, or the assembly error, etc., and the numerical avoidance of simple technical solutions, a deviation of ±4° is set.

[0065] The following is a comparison of the software simulation effects using this embodiment:

[0066] a: The light rays emitted by the light source pass through the illumination lens group 20, the film component 30, and the imaging lens group 40 to form a conical light beam of 0° ± 20°. The outgoing light rays do not pass through the deflection lens 50, and the projected pattern obtained on the projection surface is as Figure 4 shown. The overall projected pattern has no distortion, and the image brightness distribution is uniform.

[0067] b: The light rays emitted by the light source pass through the illumination lens group 20, the film component 30, and the imaging lens group 40 to form a conical light beam of 0° ± 20°. The outgoing light rays pass through the deflection lens 50, but when the first inclined surface angle θ1 and the second inclined surface angle θ2 of the deflection lens 50 do not adopt the values determined in this embodiment, the projected pattern obtained on the projection surface is as Figure 3 shown. The overall distortion of the projected pattern is large. The upper semi-circular area is stretched, resulting in a decrease in brightness, and further leading to uneven image brightness distribution.

[0068] c: The light rays emitted by the light source pass through the illumination lens group 20, the film component 30, and the imaging lens group 40 to form a conical light beam of 0° ± 20°. The outgoing light rays pass through the deflection lens 50, and when the first inclined surface angle θ1 and the second inclined surface angle θ2 of the deflection lens 50 adopt the values determined in this embodiment, the projected pattern obtained on the projection surface is as Figure 5 shown. The overall distortion of the projected pattern is small, and the image brightness distribution is uniform.

[0069] 2. When the incident light cone is 0° ± 10°, that is, the light cone angle α is 10°, and the material of the deflection lens 50 is H-K9L material, substituting different first deflection angles β into the aforementioned overdetermined equations, the values of A and B and the corresponding values of θ1 and θ2 can be obtained and formed into the following table:

[0070]

[0071]

[0072] When the incident light rays are of 0° ± 20°, and the material of the deflection lens 50 is H-K9L material, substituting different first deflection angles β into the aforementioned overdetermined equations, the values of A and B and the corresponding values of θ1 and θ2 can be obtained and formed into the following table:

[0073]

[0074]

[0075] When the incident light cone is a ray with an angle of 0° ± 30°, and the material of the deflection lens 50 is H-K9L material, substituting different first deflection angles β into the aforementioned overdetermined equations, the values of A and B and the corresponding values of θ1 and θ2 can be obtained and form the following table:

[0076]

[0077] From the above table, it can be seen that there is a certain relationship between the values of θ1 and θ2. Therefore, for a simple design, when the refractive index n of the deflection lens 50 and the cone angle α of the incident light cone are determined, it can be directly set that the ratio between the second inclined plane angle θ2 and the first inclined plane angle θ1 is greater than or equal to 0.98 and less than or equal to 1.2.

[0078] When the value of the first deflection angle β is relatively large and close to total reflection, although the distortion of the projection pattern can theoretically be minimized, the absolute degree of distortion can no longer be ignored, that is, obvious distortion can be seen with the naked eye. Therefore, from a design perspective, usually the value of the first deflection angle β is not too large. Under this condition, it can be further set that the ratio between the second inclined plane angle θ2 and the first inclined plane angle θ1 is greater than or equal to 1 and less than or equal to 1.1.

[0079] 3. The first inclined plane angle θ1 = 90° - A2 ± 4°, and the second inclined plane angle θ2 = 90° - B2 - β ± 4°; where A2 and B2 are the solutions of the following equations

[0080]

[0081] In the equations, A is the acute angle formed between the perpendicular line LL' and the incident plane, B is the acute angle formed between the perpendicular line LL' and the exit plane, and the perpendicular line LL' is the line on the deflection lens 50 that is perpendicular to the incident optical axis AA'; n is the refractive index of the deflection lens 50, α is the cone angle of the incident light cone, and β is the angle between the incident optical axis AA' and the exit optical axis BB', that is, the first deflection angle.

[0082] The first implementation mode considers the distortion of the projection pattern comprehensively from the light rays in the three angular directions of the optical axis, optical axis + α, and optical axis - α, while the third implementation mode only considers the distortion of the projection pattern comprehensively from the light rays in the two angular directions of optical axis + α and optical axis - α. Relatively speaking, the equations of the third implementation mode can obtain a unique solution, but the overall distortion improvement effect of the projection pattern may be slightly lower than that of the first implementation mode.

[0083] Preferably, the diameter size of the imaging lens group 40 is greater than 2 mm; the deflection lens 50 is made of glass or plastic.

[0084] Preferably, the number of the light sources 10 and the imaging lens groups 40 is plural, and the plural light sources 10 and the plural imaging lens groups 40 correspond to each other one by one. Among them, the plural light sources 10 are located in the same plane, and the incident optical axes AA' of the light cones formed after the light generated by each light source 10 passes through the corresponding imaging lens group 40 are parallel to each other.

[0085] In this embodiment, by setting the number of the plural light sources 10 and the plural imaging lens groups 40, the plural light sources 10 and the imaging lens groups 40 correspond to each other one by one, and with the design that the incident optical axes of the light cones are parallel to each other, the light efficiency, uniformity and the precision of the optical system can be significantly improved, while the optical interference is reduced, the design is simplified and the flexibility of the system is enhanced.

[0086] It should be noted that in the present invention, the descriptions such as "first", "second", "one" and the like are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plural" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connection", "fixation" and the like should be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0087] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of the technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of the technical solutions does not exist and is not within the protection scope required by the present invention.

[0088] The specific embodiments described herein are only illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A projection lamp assembly, characterized in that, Comprising: At least two adjacent projection lamp modules, wherein the projection lamp modules are sequentially provided with a light source (10), an illumination lens group (20), a film component (30), and an imaging lens group (40) along the optical axis direction; the optical axes of the light sources (10) are arranged in parallel; A deflection lens (50), which is arranged downstream of the imaging lens group (40) along the optical axis direction; The light beams of the projection lamp modules can form projection patterns on the projection surface, wherein, The light beam of at least one of the projection lamp modules can pass through the deflection lens (50) and irradiate on the projection surface to form an overall offset projection pattern, and the optical axis corresponding to any offset projection pattern on the projection surface is not parallel to the optical axes corresponding to other projection patterns.

2. The projection lamp assembly according to claim 1, characterized in that: The incident light cone of the projection lamp module is deflected by the deflection lens (50) by a first deflection angle (β) relative to the incident optical axis (AA') to form an outgoing light cone with an outgoing optical axis (BB'); The deflection lens (50) includes an incident surface and an outgoing surface, and the light rays at the incident optical axis (AA') in the incident light cone are deflected by one angle respectively when passing through the incident surface and the outgoing surface, and the deflection directions of the two angles are the same as the deflection direction of the first deflection angle.

3. The projection lamp assembly according to claim 2, wherein: Both the incident surface and the outgoing surface of the deflection lens (50) are planes; a first bevel angle (θ1) is formed between the incident surface of the deflection lens (50) and the incident optical axis (AA'), and a second bevel angle (θ2) is formed between the outgoing surface of the deflection lens (50) and the outgoing optical axis (BB').

4. The projection lamp assembly according to claim 3, characterized in that: The ratio between the second bevel angle (θ2) and the first bevel angle (θ1) is greater than or equal to 0.98 and less than or equal to 1.

2.

5. The projection lamp assembly according to claim 4, characterized in that: The ratio between the second bevel angle (θ2) and the first bevel angle (θ1) is greater than or equal to 1 and less than or equal to 1.

1.

6. The projection lamp assembly according to claim 3, characterized in that: The first bevel angle (θ1) = 90° - A1 ± 4°, the second bevel angle (θ2) = 90° - B1 - β ± 4°; Wherein, A1 and B1 are the least squares solutions of the following overdetermined system of equations, In the system of equations, A is the acute angle formed between the perpendicular line (LL') and the incident surface, B is the acute angle formed between the perpendicular line (LL') and the outgoing surface, the perpendicular line (LL') is the line on the deflection lens (50) perpendicular to the incident optical axis (AA'); n is the refractive index of the deflection lens (50), α is the light cone angle of the incident light cone, and β is the angle between the incident optical axis (AA') and the outgoing optical axis (BB'), that is, the first deflection angle.

7. The projection lamp assembly according to claim 3, wherein: The first bevel angle (θ1) = 90° - A2 ± 4°, the second bevel angle (θ2) = 90° - B2 - β ± 4°; Wherein, A2 and B2 are the solutions of the following system of equations, In the system of equations, A is the acute angle formed between the perpendicular line (LL') and the incident surface, B is the acute angle formed between the perpendicular line (LL') and the exit surface, and the perpendicular line (LL') is the line on the deflection lens (50) that is perpendicular to the incident optical axis (AA'); n is the refractive index of the deflection lens (50), α is the light cone angle of the incident light cone, and β is the angle between the incident optical axis (AA') and the exit optical axis (BB'), i.e., the first deflection angle.

8. The projection lamp assembly according to claim 1, wherein: The number of the light sources (10) and the imaging lens groups (40) is multiple, and the multiple light sources (10) correspond to the multiple imaging lens groups (40) one by one. Among them, the multiple light sources (10) are located in the same plane, and the incident optical axes (AA') of the light cones formed after the light rays generated by each light source (10) pass through the corresponding imaging lens group (40) are parallel to each other.

9. The projection lamp assembly according to claim 1, wherein: The diameter size of the imaging lens group (40) is greater than 2 mm; the deflection lens (50) is made of glass or plastic.

10. A vehicle, characterized in that: It includes the projection lamp assembly according to any one of claims 1 to 9.

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