Optical module and vehicle

Abstract

The application discloses an optical module and a vehicle, comprising a light source and a lens module, the light source has a first axis; the lens module comprises a condenser lens group and has a second axis; a reference plane λ perpendicular to the main optical axis is taken as a first projection plane, an initial light entrance surface closest to the light source of the lens module is taken as an initial light entrance surface, a projection B of an intersection of the first axis and the initial light entrance surface on the reference plane λ is located on one side of a projection C of the second axis on the reference plane λ, and a maximum light energy part of an emitted light beam of the lens module is located on the other side of the projection C of the second axis on the reference plane λ. The intersection of the initial light entrance surface and the first axis is arranged on one side of the second axis, more light energy of the light source enters the lens module from one side of the second axis, is emitted after being processed by the lens module, and the emitted light beam is deviated to the other side of the second axis; the brightness difference of each position of a projection pattern is small, and the uniformity of the projection pattern is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle lamps, in particular to an optical module and a vehicle. BACKGROUND

[0002] The vehicle lamp includes an illuminating lamp, a projection lamp, etc. The projection lamp can be installed at a door panel, a chassis, a bumper, etc. to meet the diversified use requirements of customers. In order to ensure that the projection lamp has a large-size projection pattern on a projection surface, the projection lamp needs to form an angle with the projection surface, i.e. the projection lamp is inclined to project onto the projection surface. Such a setting causes the pattern on the inclined projection surface to be farther away from the projection lamp and lower in brightness, and the brightness of each position of the projection pattern is different, and the uniformity of the projection pattern is poor.

[0003] Therefore, it is necessary to improve the prior art. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art, and provides an optical module and a vehicle.

[0005] According to an aspect of the present application, an optical module is provided, comprising:

[0006] a light source having a first axis, the light source being configured to take the length direction of the first axis as a main light-out direction; and

[0007] a lens module arranged in the main light-out direction of the light source, the lens module comprising a condenser lens group;

[0008] the lens module has a second axis, the second axis being a main optical axis of the lens module; the lens module is configured to adjust the light beam emitted by the light source and emit the light beam to a side away from the light source; taking a reference plane λ perpendicular to the main optical axis as a first projection surface, an incident surface of the lens module closest to the light source being an initial incident surface, an intersection of the first axis and the initial incident surface being located on one side of a projection C of the second axis on the reference plane λ, and a light energy maximum position of the emitted light beam of the lens module being located on the other side of the projection C of the second axis on the reference plane λ.

[0009] In one embodiment, the lens module is used to project the light beam emitted by the light source to a second projection surface, an included angle between the second projection surface and the second axis being γ, satisfying: 0°<γ<90°; and an intersection of the initial incident surface and the first axis being located within a range of the included angle γ, so that the light energy maximum position of the light beam projected to the second projection surface is located outside the range of the included angle γ.

[0010] In one embodiment, the first axis is parallel to the second axis.

[0011] In one embodiment, the distance between the first axis and the second axis is h mm, satisfying: 0.1≤h≤1.

[0012] In one embodiment, the first axis is not parallel to the second axis, and the intersection of the first axis and the second axis is located between the light source and the lens module.

[0013] In one embodiment, the distance between the intersection of the first axis and the initial light entrance surface and the second axis is L mm, satisfying: 2≤L≤3.

[0014] In one embodiment, the angle between the first axis and the second axis is α, satisfying: 15°≤α≤45°.

[0015] In one embodiment, the first axis is not parallel to the second axis, and the intersection of the first axis and the second axis is located on the side of the initial light entrance surface away from the light source.

[0016] In one embodiment, the angle between the first axis and the second axis is β, satisfying: 15°≤β≤45°.

[0017] In one embodiment, the first axis is not parallel to the second axis, and the intersection of the first axis and the second axis is located on the side of the light source away from the lens module.

[0018] In one embodiment, the angle between the first axis and the second axis is δ, satisfying: 15°≤δ≤45°.

[0019] According to another aspect of the present application, a vehicle is provided, comprising the optical module as described in any one of the preceding embodiments.

[0020] The present application has the beneficial effect that the intersection of the initial light entrance surface and the first axis is arranged on one side of the second axis, so that more light energy of the light source enters the lens module from the one side of the second axis, and the emitted light beam is deflected to the other side of the second axis after being processed by the lens module. Such an arrangement can ensure that the brightness difference of each position of the projection pattern is small, effectively improving the uniformity of the projection pattern and the projection performance. BRIEF DESCRIPTION OF DRAWINGS

[0021] The technical solutions and other beneficial effects of the present application will become apparent from the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0022] Figure 1 is a schematic diagram of an optical module provided by an embodiment of the present application.

[0023] Figure 2 is a schematic diagram of orthographic projection on a reference plane provided by an embodiment of the present application.

[0024] Figure 3 is Figure 1 is an enlarged view of A in FIG.

[0025] Figure 4 is a schematic diagram of another optical module provided by an embodiment of the present application.

[0026] Figure 5 is Figure 4 is an enlarged view of E in FIG.

[0027] Figure 6 is Figure 4 is an enlarged view of E in another embodiment.

[0028] Figure 7 is Figure 4 is an enlarged view of E in another embodiment.

[0029] in the figure:

[0030] 10, light source; 11, first axis;

[0031] 20, lens module; 21, second axis; 22, condenser lens group; 221, initial light entrance surface; 23, film; 24, imaging lens group;

[0032] 30, second projection surface. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The optical assembly and the vehicle will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the prior art, when the projection lamp and the second projection surface have an angle, the brightness of each position of the projection pattern on the second projection surface is different, and the uniformity of the projection pattern is poor.

[0037] To solve the above technical problems, an optical module is provided in the embodiments of the present application, which comprises a light source and a lens module. The light source has a first axis, and the light source is configured to take the length direction of the first axis as a main light-out direction. The lens module is arranged in the main light-out direction of the light source, and the lens module has a second axis, which is the main optical axis of the lens module. The lens module is configured to adjust the light beam emitted by the light source and emit the light beam away from the light source. A reference plane λ perpendicular to the main optical axis is taken as a first projection surface. The intersection of the first axis and the initial light-in surface closest to the light source is located on one side of the projection C of the second axis on the reference plane λ. The light energy maximum position of the emitted light beam of the lens module is located on the other side of the projection C of the second axis on the reference plane λ.

[0038] For the convenience of description, in the following embodiments, the optical module is taken as an example applied to a projection lamp.

[0039] Reference is made to Figure 1 In an embodiment, the optical module comprises a light source 10 and a lens module 20. The light source 10 has a first axis 11, and the light source 10 is configured to take the length direction of the first axis 11 as a main light-out direction. The lens module 20 is arranged in the main light-out direction of the light source 10, and the lens module 20 has a second axis 21, which is the main optical axis of the lens module 20. The lens module 20 is configured to adjust the light beam emitted by the light source 10 and emit the light beam away from the light source 10. A reference plane λ perpendicular to the main optical axis is taken as a first projection surface. The initial light-in surface 221 closest to the light source 10 of the lens module 20 is located on one side of the projection C of the second axis 21 on the reference plane λ. The light energy maximum position of the emitted light beam of the lens module 20 is located on the other side of the projection C of the second axis 21 on the reference plane λ.

[0040] Figure 2The schematic diagram of the normal projection on the reference plane λ, wherein the circle represents the light beam area of the lens module 20, the intersection of the initial light entrance surface 221 and the first axis 11 is the normal projection B of the intersection on the reference plane λ, the normal projection of the second axis 21 on the reference plane λ is C, and the light energy maximum position of the light beam emitted by the lens module 20 is the normal projection D of the light energy maximum position on the reference plane; that is, the point B and the point D are arranged on the two sides of the point C, that is, more light energy of the light source 10 enters the lens module 20 from one side of the second axis 21, and after the processing of the lens module 20, the emitted light beam deviates to the other side of the second axis 21, that is, more light energy of the emitted light beam is on the other side of the second axis 21.

[0041] The arrangement can offset the projection pattern of the emitted light beam on the inclined second projection plane 30 (such as the ground) to a far place, enhance the brightness of the pattern in the far place, and reduce the brightness of the pattern in the near place, so as to ensure that the brightness difference of each position of the projection pattern is small, effectively improve the uniformity of the projection pattern, and improve the projection performance.

[0042] It should be noted that in the light beam emitted by the light source 10, the light energy at the first axis 11 is the strongest, and through the arrangement of the light source 10, the light energy maximum position of the light beam emitted from the lens module 20 can be offset and not coincide with the second axis 21, the brightness of the pattern in the far place is enhanced, and the brightness of the pattern in the near place is reduced, so as to improve the uniformity of the overall brightness of the projection pattern, improve the projection performance of the lens module 20 after the installation on the vehicle, and have strong applicability; and the uniformity of the lighting (projection pattern) can be realized by adjusting the arrangement position of the light source 10, without adjusting the lens module 20, and the adjustment is not easily affected by the machining precision, is easier to adjust, reduces the operation difficulty and production cost (the lens module 20 is a standard part); the position of the light source 10 is adjusted according to different installation positions, so that the light energy maximum position of the light beam emitted from the lens module 20 is offset, and the uniformity of the lighting in different scenes is realized, the adjustable range of the position of the light source 10 is large, the light source 10 can be adapted to different installation positions, and has strong applicability.

[0043] Referring to Figure 1 In an embodiment, the lens module 20 is used to project the light emitted by the light source 10 to the second projection plane 30, the included angle between the second projection plane 30 and the second axis 21 is γ, and 0°<γ<90° is satisfied; the intersection of the initial light entrance surface 221 and the first axis 11 is located in the range of the angle γ swept, so that the light energy maximum position of the light beam projected to the second projection plane 30 is located outside the range of the angle γ.

[0044] In this embodiment, the second projection surface 30 is the ground, and the projection lamp is installed on the door panel, chassis, bumper, etc. At the same installation height (the height of the projection lamp from the ground), to ensure the projected pattern is large enough, the beam emitted from the lens module 20 (projection lamp) needs to form an angle (i.e., angle γ) with the ground. The smaller the angle, the larger the projected pattern. In the prior art, the first axis 11 coincides with the second axis 21. In this case, the uniformity of the projected pattern formed on the ground is poor, especially near the light source 10 (the side closest to the light source 10, hereinafter the same). Figure 1 The projected pattern on the left side of the second axis 21 in the field of view is brighter, while the pattern on the far side (the side away from the light source 10, the same below) is brighter. Figure 1 The brightness of the projected pattern (on the right side of the second axis 21 in the field of view) will be significantly reduced due to the increase in optical path (the light needs to travel a greater distance to be projected onto the ground).

[0045] In this embodiment, the intersection of the initial incident light surface 221 and the first axis 11 is set within the area swept by the included angle γ (e.g., Figure 1 As shown), more light energy from the light source 10 is directed into the lens module 20 from below the second axis 21 (i.e., within the area swept by the included angle γ). Correspondingly, the part of the beam of light (projection pattern) projected onto the ground with the maximum light energy is shifted and located outside the range of the included angle γ (to the right of the second axis 21). That is, more energy of the projection pattern is located to the right of the second axis 21. This reduces the light energy at near distances and enhances the light energy at distant distances, so that the light beam used to form the distant projection pattern reaches the ground with the same energy as the light beam at near distances after traveling a longer optical path, thus improving the uniformity of the projection pattern on the ground.

[0046] It should be noted that in some embodiments, the second axis 21 may also be perpendicular to the second projection surface 30; for example, when the projection lamp is set on the chassis, by adjusting the position of the light source 10, the projection position of the projection pattern can be shifted, and the projection pattern can be shifted out of the vehicle body coverage area, making it easier for drivers and passengers to observe.

[0047] See Figure 3 In one embodiment, the first axis 11 is parallel to the second axis 21; and the distance between the first axis 11 and the second axis 21 is h mm, satisfying: 0.1≤h≤1, for example 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, etc.

[0048] When the value of h is less than 0.1, the first axis 11 is too close to the second axis 21, the light beam emitted from the lens module 20 has no significant energy deviation, and when the second axis 21 is not perpendicular to the second projection surface 30, the uniformity of the projection pattern on both sides of the second axis 21 cannot be guaranteed; when the value of h is greater than 1, the first axis 11 is too far from the second axis 21, that is, the light source 10 is too far from the second axis 21, which not only wastes the internal space of the projection lamp, but also causes part of the light emitted by the light source 10 to not be incident on the lens module 20, resulting in a lower display quality of the projection pattern. Therefore, when the first axis 11 is parallel to the second axis 21, the value of h in the embodiment is within the range, which can guarantee the uniformity of the projection pattern.

[0049] Referring to Figure 5 In an embodiment, the first axis 11 is not parallel to the second axis 21, and the intersection of the first axis 11 and the second axis 21 is located between the light source 10 and the lens module 20; the distance between the intersection of the first axis 11 and the initial light-incident surface 221 and the second axis 21 is L mm, which satisfies: 2≤L≤3, such as 2, 2.5, 3, etc.

[0050] In the embodiment, the light source 10 is arranged above the second axis 21, and the position of the light source 10 is set according to the mounting positions of the remaining parts inside the projection lamp, which can improve the utilization rate of the internal space of the projection lamp. When the value of L is less than 2, the intersection of the first axis 11 and the initial light-incident surface 221 is closer to the second axis 21, the light beam emitted from the lens module 20 has no significant energy deviation, and the uniformity of the projection pattern on both sides of the second axis 21 cannot be guaranteed; when the value of L is greater than 3, part of the light emitted by the light source 10 will not be incident on the lens module 20, resulting in a lower display quality of the projection pattern.

[0051] In addition, it should be noted that the value of L in the embodiment is greater than the value of h when the first axis 11 is parallel to the second axis 21, that is, the energy deviation distance of the light beam emitted from the lens module 20 is greater; when the height of the projection lamp is consistent Figure 4 In the viewing angle, the distance between the light source 10 and the second projection surface 30 is constant), in order to guarantee the uniformity of the projection pattern, the value of γ in the embodiment will be relatively small, a larger light beam area will be formed on the second projection surface 30, that is, the area of the projection pattern is larger, which is convenient for the user to observe.

[0052] Referring to Figure 5 In an embodiment, the first axis 11 is not parallel to the second axis 21, and the intersection of the first axis 11 and the second axis 21 is located between the light source 10 and the lens module 20; the angle between the first axis 11 and the second axis 21 is α, which satisfies: 15°≤α≤45°, such as 15°, 25°, 35°, 45°, etc.

[0053] In the embodiment, the light source 10 is arranged above the second axis 21, and the position of the light source 10 is arranged according to the mounting positions of the remaining parts inside the projection lamp, so that the utilization rate of the space inside the projection lamp can be improved. When the value of a is less than 15°, the first axis 11 tends to be parallel to the second axis 21, the intersection of the initial light entrance surface 221 and the first axis 11 is closer to the second axis 21, the energy deviation of the light rays emitted from the lens module 20 is not significant, and the uniformity of the projection pattern on both sides of the second axis 21 cannot be ensured. When the value of a is greater than 45°, the intersection of the initial light entrance surface 221 and the first axis 11 is farther away from the second axis 21, and part of the light rays emitted by the light source 10 will not be incident to the lens module 20, so that the display effect quality of the projection pattern is lowered. In summary, when 15°≤a≤45°, the uniformity of the projection pattern can be ensured.

[0054] It should be noted that in the embodiment, the position of the light source 10 relative to the second axis 21 is unchanged, and the intersection position of the first axis 11 and the second axis 21 is adjusted to adjust the included angle a. In some embodiments, the intersection position of the initial light entrance surface 221 and the first axis 11 can be unchanged, and the position of the light source 10 is adjusted to adjust the included angle a.

[0055] Reference is made to Figure 6 In an embodiment, the first axis 11 is not parallel to the second axis 21, and the intersection of the first axis 11 and the second axis 21 is located on the side of the initial light entrance surface 221 away from the light source 10. The included angle between the first axis 11 and the second axis 21 is β, and 15°≤β≤45°, for example, 15°, 25°, 35°, 45°, etc.

[0056] In the embodiment, the light source 10 is arranged below the second axis 21, and the position of the light source 10 is arranged according to the mounting positions of the remaining parts inside the projection lamp, so that the utilization rate of the space inside the projection lamp can be improved. When the value of β is less than 15°, the first axis 11 tends to be parallel to the second axis 21, the intersection of the initial light entrance surface 221 and the first axis 11 is closer to the second axis 21, the energy deviation of the light rays emitted from the lens module 20 is not significant, and the uniformity of the projection pattern on both sides of the second axis 21 cannot be ensured. When the value of β is greater than 45°, the intersection of the initial light entrance surface 221 and the first axis 11 is farther away from the second axis 21, and part of the light rays emitted by the light source 10 will not be incident to the lens module 20, so that the display effect quality of the projection pattern is lowered. In summary, when 15°≤β≤45°, the uniformity of the projection pattern can be ensured.

[0057] It should be noted that in the embodiment, the intersection position of the first axis 11 and the second axis 21 is unchanged, and the included angle β is adjusted by changing the position of the light source 10. In some embodiments, the position of the light source 10 can also be unchanged, and the adjustment of the included angle β is realized by adjusting the intersection position of the first axis 11 and the second axis 21.

[0058] Referring to Figure 7 In an embodiment, the first axis 11 and the second axis 21 are not parallel, and the intersection of the first axis 11 and the second axis 21 is located on the side of the light source 10 away from the lens module 20; the included angle between the first axis 11 and the second axis 21 is δ, which satisfies: 15°≤δ≤45°, such as 15°, 25°, 35°, 45°, etc.

[0059] In the embodiment, the light source 10 is arranged below the second axis 21, and the position of the light source 10 is set according to the mounting position of the remaining parts inside the projection lamp, which can improve the utilization rate of the internal space of the projection lamp. When the value of δ is less than 15°, the first axis 11 tends to be parallel to the second axis 21, and the intersection of the initial light entrance surface 221 and the first axis 11 will be closer to the second axis 21, and the energy of the light rays emitted from the lens module 20 will not be significantly shifted, which cannot guarantee the uniformity of the projection pattern on both sides of the second axis 21; when the value of δ is greater than 45°, the intersection of the initial light entrance surface 221 and the first axis 11 will be farther away from the second axis 21, and part of the light emitted by the light source 10 will not be incident to the lens module 20, resulting in a lower display quality of the projection pattern. In summary, when 15°≤δ≤45°, the uniformity of the projection pattern can be guaranteed.

[0060] It should be noted that in the embodiment, the intersection position of the first axis 11 and the second axis 21 is unchanged, and the included angle δ is adjusted by changing the position of the light source 10. In some embodiments, the position of the light source 10 can also be unchanged, and the adjustment of the included angle δ is realized by adjusting the intersection position of the first axis 11 and the second axis 21.

[0061] Referring to Figure 1 In an embodiment, the lens module 20 sequentially includes a condenser lens group 22, a film 23, and an imaging lens group 24, and the condenser lens group 22 is arranged between the light source 10 and the film 23.

[0062] After the light rays are emitted from the light source 10, they are converged by the condenser lens group 22, then pass through the film 23, and finally pass through the imaging lens group 24 to form a projection pattern on the second projection surface 30.

[0063] On the other hand, the present application also relates to a vehicle comprising the optical module of any one of the preceding embodiments.

[0064] By adopting the technical scheme provided in the embodiments of the present application, the intersection of the initial light entrance surface 221 and the first axis 11 is arranged on one side of the second axis 21, more light energy of the light source 10 enters the lens module 20 from the one side of the second axis 21, and the emitted light beam is deviated to the other side of the second axis 21 after being processed by the lens module 20. Such an arrangement can ensure that the brightness difference of each position of the projection pattern is small, effectively improves the uniformity of the projection pattern, and improves the projection performance.

[0065] In each of the embodiments of the present application, the terms or descriptions in different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship. In the present application, "at least one" means one or more, and "multiple" means two or more.

[0066] It can be understood that the various numbers involved in the embodiments of the present application are only distinguished for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the execution order, and the execution order of the processes should be determined according to their functions and inherent logic.

[0067] The optical module and the vehicle provided by the embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples in this paper. The above embodiment description is only used to help understand the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. An optical module, characterized in that, include: A light source having a first axis, the light source being configured with the length direction of the first axis as the main light emission direction; as well as A lens module is positioned in the main light-emitting direction of the light source, and the lens module includes a condenser lens group; The lens module has a second axis, which is the main optical axis of the lens module; the lens module is configured to adjust the light beam emitted by the light source and emit the light beam toward the side away from the light source; Using a reference plane λ perpendicular to the principal optical axis as the first projection plane, the light-incident surface of the lens module closest to the light source is the initial light-incident surface. The intersection of the first axis and the initial light-incident surface is located on one side of the orthographic projection B of the reference plane λ, which is the same as the orthographic projection C of the reference plane λ. The part of the light beam with the maximum light energy emitted by the lens module is located on the other side of the orthographic projection D of the reference plane λ, which is the same as the orthographic projection C of the reference plane λ.

2. The optical module as described in claim 1, characterized in that, The lens module is used to project the light emitted by the light source onto the second projection surface. The angle between the second projection surface and the second axis is γ, which satisfies: 0° < γ < 90°. The intersection of the initial incident surface and the first axis is located within the area swept by the included angle γ, so that the part of the light beam with the maximum light energy projected onto the second projection surface is outside the range of the included angle γ.

3. The optical module as described in claim 1, characterized in that, The first axis is parallel to the second axis.

4. The optical module as described in claim 3, characterized in that, The distance between the first axis and the second axis is h mm, which satisfies: 0.1≤h≤1.

5. The optical module as described in claim 1, characterized in that, The first axis is not parallel to the second axis, and the intersection of the first axis and the second axis is located between the light source and the lens module.

6. The optical module as described in claim 5, characterized in that, The distance between the intersection of the first axis and the initial incident surface and the second axis is L mm, satisfying: 2≤L≤3.

7. The optical module as described in claim 5, characterized in that, The angle between the first axis and the second axis is α, which satisfies: 15°≤α≤45°.

8. The optical module as described in claim 1, characterized in that, The first axis is not parallel to the second axis, and the intersection of the first axis and the second axis is located on the side of the initial incident surface away from the light source.

9. The optical module as described in claim 8, characterized in that, The angle between the first axis and the second axis is β, which satisfies: 15°≤β≤45°.

10. The optical module as described in claim 1, characterized in that, The first axis is not parallel to the second axis, and the intersection of the first axis and the second axis is located on the side of the light source away from the lens module.

11. The optical module as described in claim 1, characterized in that, The angle between the first axis and the second axis is δ, which satisfies: 15°≤δ≤45°.

12. The optical module as described in claim 1, characterized in that, The lens module also includes a film, which is located on the side of the condenser lens group away from the light source.

13. A vehicle, characterized in that, Includes the optical module as described in any one of claims 1 to 12.

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