Headlamp and vehicle

Abstract

The utility model provides a headlamp and a vehicle, the headlamp comprises a light source module, the light source module has an illumination mode and a projection mode, and the light source module can project patterns when in the projection mode; the lens is arranged on the light emitting side of the light source module and is provided with a first optical axis; the center of the light source module deviates from the first optical axis, so that the center line of the emission view field corresponding to the light source module intersects with the first optical axis. According to the headlamp, the lens with the light gathering effect is arranged on the light emitting side of the light source module, and the projection definition can be improved. On the basis, the center of the light source module deviates from the first optical axis, so that the emission view field corresponding to the light source module deflects relative to the first optical axis. Therefore, the lighting range of the whole vehicle can be widened. Therefore, the purpose of improving the projection definition can be achieved, and the observation range of a driver is not affected.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a headlight and a vehicle. Background Art

[0002] With the development of vehicle technology, the functions of vehicle headlights have become more abundant. A headlight in the related art can not only be used for lighting, but also for projection, thereby projecting a static pattern or a dynamic image on the road surface in front of the vehicle.

[0003] In the related art, headlights that integrate lighting and projection functions often have relatively low projection clarity. One way to improve projection clarity is to set a lens with a light focusing effect in front of the light source module. However, this method also reduces the field of view of the headlights, reducing the number of lanes that the vehicle can illuminate, thereby affecting the driver's observation range and being detrimental to driving safety. Utility Model Content

[0004] The present application provides a headlight and a vehicle, aiming to improve projection clarity without affecting the driver's observation range.

[0005] The specific technical solutions are as follows:

[0006] In a first aspect, the present application provides a headlight for a vehicle, the headlight comprising:

[0007] a light source module, the light source module having an illumination mode and a projection mode, and the light source module can project a pattern when in the projection mode; and

[0008] A lens, arranged on the light-emitting side of the light source module, the lens having a first optical axis;

[0009] The center of the light source module deviates from the first optical axis so that a center line of an emission field corresponding to the light source module intersects with the first optical axis.

[0010] The headlight in the embodiment of the present application is conducive to improving the clarity of the projection by setting a lens with a light convergence effect on the light output side of the light source module. On this basis, the center of the light source module is set away from the first optical axis, so that the emission field of view corresponding to the light source module will be deflected relative to the first optical axis. When the headlight in the present application is applied to a vehicle, the lens can be set toward the front of the vehicle so that the first optical axis extends along the front and rear direction of the vehicle. If the left headlight of the vehicle adopts the headlight in the present application, the center of the light source module can be deflected to the right relative to the first optical axis, so that the emission field of view corresponding to the light source module will be deflected to the left relative to the first optical axis, and the illumination range of the left front of the vehicle can be widened in the lighting mode, so that the illumination range of the entire vehicle can be widened. Similarly, if the right headlight of the vehicle adopts the headlight in the present application, the center of the light source module can be deflected to the left relative to the first optical axis, so that the emission field of view corresponding to the light source module will be deflected to the right relative to the first optical axis, and the illumination range of the right front of the vehicle can be widened in the lighting mode, so that the illumination range of the entire vehicle can be widened. In this way, the purpose of improving projection clarity can be achieved without affecting the driver's viewing range.

[0011] In some embodiments, the light source module includes a plurality of light-emitting devices arranged in an array, and the light-emitting devices are Mini LEDs or Micro LEDs.

[0012] In some of the embodiments, the emission field of view corresponding to the light source module includes a first sub-field of view and a second sub-field of view;

[0013] The first optical axis extends along a first direction, the first sub-field of view and the second sub-field of view are respectively arranged on both sides of the first optical axis along a second direction, the first direction is a front-rear direction of the vehicle, and the second direction is a left-right direction of the vehicle;

[0014] Wherein, the field of view angle of the first sub-field of view is greater than the field of view angle of the second sub-field of view.

[0015] In some embodiments, the field of view angle of the first sub-field of view is 15 degrees, and the field of view angle of the second sub-field of view is 9 degrees.

[0016] In some embodiments, part of the plurality of light-emitting devices constitutes a first device group, and another part constitutes a second device group, and the light-emitting devices in the first device group and the second device group are both plural;

[0017] In the lighting mode, all the light-emitting devices in the first device group emit light, and all the light-emitting devices in the second device group emit light;

[0018] In the projection mode, all the light emitting devices in the first device emit light, and all the light emitting devices in the second device do not emit light.

[0019] In some embodiments, part of the plurality of light-emitting devices constitutes a first device group, and another part constitutes a second device group, and the light-emitting devices in the first device group and the second device group are both plural;

[0020] In the lighting mode, all the light-emitting devices in the first device group emit light, all the light-emitting devices in the second device group emit light, and the light-emitting intensity of the light-emitting devices in the first device group is equal to the light-emitting intensity of the light-emitting devices in the second device group;

[0021] In the projection mode, all the light emitting devices in the first device group emit light, all the light emitting devices in the second device group emit light, and the light emission intensity of the light emitting devices in the first device group is greater than the light emission intensity of the light emitting devices in the second device group.

[0022] In some of the embodiments, the center of the first device group is located on the first optical axis.

[0023] In some of the embodiments, the center of the first device group is offset from the first optical axis.

[0024] In some embodiments, along a second direction, a distance that a center of the light source module deviates from the first optical axis is greater than or equal to 1 mm and less than or equal to 2 mm, and the second direction is a left-right direction of the vehicle.

[0025] In some embodiments, along the height direction of the vehicle, the distance that the center of the light source module deviates from the first optical axis is greater than or equal to 0.7 mm and less than or equal to 1.2 mm.

[0026] In a second aspect, the present application provides a vehicle, comprising a left headlight and a right headlight, wherein at least one of the left headlight and the right headlight is the front headlight in the above-mentioned embodiment.

[0027] In some of the embodiments, the left headlight is the front headlight, and the center of the light source module is located to the upper right of the first optical axis;

[0028] Alternatively, the right headlight is the front headlight, and the center of the light source module is located at the upper left of the first optical axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic front view of a headlight in an embodiment of the present application;

[0030] Figure 2It is a left schematic diagram of a headlight in an embodiment of the present application;

[0031] Figure 3 is a schematic top view of a headlight in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the relationship between the emission field of view corresponding to the light source module and the first optical axis in an embodiment of the present application;

[0033] Figure 5 is a schematic diagram of a light source module in an embodiment of the present application;

[0034] Figure 6 is a schematic diagram of a first part and a second part of a light source module in an embodiment of the present application;

[0035] Figure 7 It is a schematic diagram of grouping light source modules in another embodiment of the present application.

[0036] The description of the reference numerals in the figures is as follows:

[0037] 100. lens; 101. first optical axis;

[0038] 200, light source module; 201, light emitting device; 210, first device group; 220, second device group; 230, first part; 240, second part;

[0039] 700, emission field of view; 701, center line; 702, first sub-field of view; 703, second sub-field of view. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] In the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] With the development of vehicle technology, the functions of vehicle headlights have become more abundant. A headlight in the related art can not only be used for lighting, but also for projection, thereby projecting a static pattern or a dynamic image on the road surface in front of the vehicle.

[0045] In the related art, headlights that integrate lighting and projection functions often have relatively low projection clarity. One way to improve projection clarity is to set a lens with a light focusing effect in front of the light source module. However, this method also reduces the field of view of the headlights, reducing the number of lanes that the vehicle can illuminate, thereby affecting the driver's observation range and being detrimental to driving safety.

[0046] Based on this, an embodiment of the first aspect of the present application provides a headlight that aims to improve projection clarity without affecting the driver's observation range.

[0047] like Figure 1 , Figure 2 , Figure 3 ,as well as Figure 4 As shown, the headlight in the embodiment of the present application can be used for a vehicle. The headlight includes a light source module 200 and a lens 100. The light source module 200 has an illumination mode and a projection mode. When the light source module 200 is in the projection mode, it can project an image. The lens 100 is arranged on the light emitting side of the light source module 200. The lens 100 has a first optical axis 101. The center of the light source module 200 deviates from the first optical axis 101, so that the center line 701 of the emission field 700 corresponding to the light source module 200 intersects with the first optical axis 101.

[0048] Specifically, the light source module 200 may include a plurality of micron-level light-emitting points, each of which may be independently controlled, for example, controlling a single light-emitting point to emit light or not, or changing the light intensity of a single light-emitting point, etc. Among them, the control method of the light-emitting point is an existing means, which can be realized by a control circuit composed of a thin film transistor TFT, and the present application does not expand on this in detail. The light source module 200 has an illumination mode and a projection mode, and the light-emitting mode of the light-emitting point can be adjusted according to different working modes. For example, in the illumination mode, all the light-emitting points can be controlled to emit white light to maximize the illumination brightness. For example, in the projection mode, some of the light-emitting points can be controlled to emit light (which can be white light or other colors of light), so that a specific pattern can be projected. It is understandable that if the light-emitting points in each light source module 200 are composed of red light-emitting points, green light-emitting points and blue light-emitting points, then various colors of light can be modulated through the combination of colors, and dynamic images can be projected in combination with existing display technology.

[0049] The lens 100 is a lens 100 having a light converging effect.

[0050] The headlight in the embodiment of the present application is helpful to improve the clarity of the projection by setting a lens 100 with a light convergence effect on the light output side of the light source module 200. On this basis, the center of the light source module 200 is set away from the first optical axis 101, so that the emission field of view 700 corresponding to the light source module 200 will be deflected relative to the first optical axis 101. When the headlight in the present application is applied to a vehicle, the lens 100 can be set toward the front of the vehicle so that the first optical axis 101 extends along the front and rear direction of the vehicle. If the left headlight of the vehicle adopts the headlight in the present application, the center of the light source module 200 can be deflected to the right relative to the first optical axis 101, so that the emission field of view 700 corresponding to the light source module 200 will be deflected to the left relative to the first optical axis 101, and the lighting range of the left front of the vehicle can be widened in the lighting mode, so that the lighting range of the entire vehicle can be widened. Similarly, if the right headlight of the vehicle adopts the headlight in the present application, the center of the light source module 200 can be deflected to the left relative to the first optical axis 101, so that the emission field of view 700 corresponding to the light source module 200 will be deflected to the right relative to the first optical axis 101, and the lighting range of the right front of the vehicle can be widened in the lighting mode, thereby widening the lighting range of the entire vehicle. In this way, the purpose of improving the projection clarity can be achieved without affecting the driver's observation range.

[0051] In some of the embodiments, Figure 5As shown, the light source module 200 includes a plurality of light emitting devices 201 arranged in an array, and the light emitting devices 201 are Mini LEDs or Micro LEDs. Among them, Mini LEDs are light emitting devices 201 with a size of tens of microns, and Micro LEDs are light emitting devices 201 with a size of less than ten microns.

[0052] In one embodiment, Figure 4 As shown, the emission field of view 700 corresponding to the light source module 200 includes a first sub-field of view 702 and a second sub-field of view 703, the first optical axis 101 extends along a first direction, the first sub-field of view 702 and the second sub-field of view 703 are arranged on both sides of the first optical axis 101 along a second direction, the first direction is the front and rear direction of the vehicle, and the second direction is the left and right direction of the vehicle, wherein the field of view angle α of the first sub-field of view 702 is greater than the field of view angle β of the second sub-field of view 703.

[0053] It is understandable that if Figure 6 As shown, the light emitting device 201 in the light source module 200 can be divided into two parts with the first optical axis 101 as the boundary, each part includes a plurality of light emitting devices 201, the part on the right side of the first optical axis 101 is the first part 230, and the part on the left side of the first optical axis 101 is the second part 240. Based on the imaging law of the lens 100, the light emitted by the first part 230 forms a sub-field of view located on the left side of the first optical axis 101 after passing through the lens 100, and the light emitted by the second part 240 forms a sub-field of view located on the right side of the first optical axis 101 after passing through the lens 100.

[0054] In this embodiment, the first sub-field of view 702 and the second sub-field of view 703 are sub-fields of view located on both sides of the first optical axis 101, respectively, wherein the field of view angle of the first sub-field of view 702 is greater than the field of view angle of the second sub-field of view 703, which means that the emission field of view 700 of the light source module 200 is deflected relative to the first optical axis 101.

[0055] Furthermore, the field of view angle α of the first sub-field of view 702 is 15 degrees, and the field of view angle of the second sub-field of view 703 is 9 degrees. At this time, the field of view angle β of the emission field of view 700 corresponding to the light source module 200 is 24 degrees (the sum of the field of view angles of the two sub-fields of view). After testing, if the field of view angle of the left and right headlights of the vehicle is 24 and deflected by 3°, and the field of view angle of the other is 36 degrees and not deflected, then the left and right headlights can illuminate six lanes when used together, thereby meeting the driver's observation requirements while driving.

[0056] Furthermore, along the second direction, the distance that the center of the light source module 200 deviates from the first optical axis 101 is greater than or equal to 1 mm and less than or equal to 2 mm. In this way, the emission field of view 700 of the light source module 200 can be deflected relative to the first optical axis 101, but it can also be ensured that the deflection degree is not too large (if the deflection degree is too large, it will affect the lighting effect directly in front of the vehicle).

[0057] Furthermore, along the height direction of the vehicle, the distance that the center of the light source module 200 deviates from the first optical axis 101 is greater than or equal to 0.7 mm and less than or equal to 1.2 mm. Thus, when the headlight is installed on the vehicle, the distance that the center of the light source module 200 is higher than the first optical axis 101 is 0.7 mm to 1.2 mm, which is conducive to making the projected pattern or image fall on the ground in front of the vehicle.

[0058] In some of the embodiments, Figure 7 As shown, a portion of the plurality of light emitting devices 201 constitutes a first device group 210 ( Figure 7 The other part constitutes the second device group 220 ( Figure 7 The first device group 210 and the second device group 220 both have plural light emitting devices 201. In the illumination mode, all the light emitting devices 201 in the first device group 210 emit light, and all the light emitting devices 201 in the second device group 220 emit light. In the projection mode, all the light emitting devices 201 in the first device emit light, and all the light emitting devices 201 in the second device do not emit light.

[0059] In this embodiment, the light emitting devices 201 in the light source module 200 can be divided into a first device group 210 and a second device group 220 according to functional requirements, wherein the light emitting devices 201 in the first device group 210 are used for both projection and lighting, and the light emitting devices 201 in the second device group 220 are only used for lighting. That is, when the light source module 200 is in the lighting mode, the light emitting devices 201 in the first device group 210 and the second device group 220 both emit light, thereby maximizing the lighting brightness. In the projection mode, only the light emitting devices 201 in the first device group 210 emit light, so that when the light emitting devices 201 in the first device group 210 are distributed in a specific form, the projected light can form a pattern of a specific form. It can be understood that in the embodiment, in the projection mode, the light emitting devices 201 in the second device group 220 do not emit light, which makes the lighting range in the mode smaller, and therefore, it is suitable for projection when the vehicle is in a parking state.

[0060] In some other embodiments, a portion of the plurality of light-emitting devices 201 constitutes a first device group 210, and another portion constitutes a second device group 220, and the light-emitting devices 201 in the first device group 210 and the second device group 220 are both plural. In the illumination mode, all the light-emitting devices 201 in the first device group 210 emit light, all the light-emitting devices 201 in the second device group 220 emit light, and the light-emitting intensity of the light-emitting devices 201 in the first device group 210 is equal to the light-emitting intensity of the light-emitting devices 201 in the second device group 220. In the projection mode, all the light-emitting devices 201 in the first device emit light, all the light-emitting devices 201 in the second device emit light, and the light-emitting intensity of the light-emitting devices 201 in the first device group 210 is greater than the light-emitting intensity of the light-emitting devices 201 in the second device group 220.

[0061] In this embodiment, the light emitting devices 201 in the light source module 200 are also divided into a first device group 210 and a second device group 220. Similarly, the light emitting devices 201 in the first device group 210 are used for both projection and illumination, while the light emitting devices 201 in the second device group 220 are only used for illumination. However, unlike the above-mentioned embodiment, in the projection mode, the light emitting devices 201 in the first device group 210 and the second device group 220 both emit light, but the light emission intensities of the two groups of light emitting devices 201 are different, that is, the light emission intensity of the light emitting devices 201 in the first device group 210 is greater, so that while forming a projection pattern, the light emitting devices 201 in the second device group 220 can also provide illumination. This mode can be used for projection when the vehicle is in a parking state, and can also be used for projection when the vehicle is in a driving state.

[0062] In one embodiment, the center of the first device group 210 is located on the first optical axis 101. In this configuration, in the projection mode, the projected pattern or image will be located directly in front of the headlights, rather than in the center of the front of the vehicle.

[0063] In another embodiment, the center of the first device group 210 deviates from the first optical axis 101. In this way, in the projection mode, the projected pattern or image will deviate from the front of the headlight. For example, the projected pattern or image can be located at the center of the front of the vehicle.

[0064] The embodiment of the second aspect of the present application provides a vehicle, the vehicle comprising a left headlight and a right headlight, wherein at least one of the left headlight and the right headlight is the front headlight in the above embodiment. Exemplarily, the vehicle can be a family car, a commercial vehicle, or a freight vehicle, etc. The driving type of the vehicle is not limited, and it can be a fuel vehicle, an electric vehicle, or a hybrid vehicle.

[0065] The vehicle in the embodiment of the present application is based on the same application concept as the headlight in the above embodiment. Therefore, the vehicle in the embodiment of the present application can obtain the technical effects of the headlight in the above embodiment.

[0066] It can be understood that the vehicle includes a left headlight and a right headlight, wherein one of the left headlight and the right headlight adopts the headlight in the above embodiment, or both of the left headlight and the right headlight adopt the headlight in the above embodiment.

[0067] In one embodiment, the left headlight is the front headlight in the above embodiment, and the center of the light source module 200 is located at the upper right of the first optical axis 101. This arrangement makes the emission field of view 700 corresponding to the light source module 200 deflect to the left, which can widen the illumination range of the left front of the vehicle. In the case where the illumination field of the right headlight is not deflected, the illumination range of the entire vehicle can be widened. In addition, the light source module 200 is located above the first optical axis 101, which can ensure that the projected pattern or image is formed on the ground.

[0068] In another embodiment, the right headlight is a front headlight, and the center of the light source module 200 is located at the upper left of the first optical axis 101. This arrangement allows the emission field of view 700 corresponding to the light source module 200 to deflect to the right, which can widen the lighting range of the right front of the vehicle. In the case where the lighting field of view of the left headlight is not deflected, the lighting range of the entire vehicle can be widened. In addition, the light source module 200 is located above the first optical axis 101, which can ensure that the projected pattern or image is formed on the ground.

[0069] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A headlight for a vehicle, characterized in that: The headlight comprises: A light source module (200), the light source module (200) having an illumination mode and a projection mode, the light source module (200) being able to project a pattern when in the projection mode; and A lens (100) is arranged on the light-emitting side of the light source module (200), and the lens (100) has a first optical axis (101); The center of the light source module (200) deviates from the first optical axis (101), so that a center line (701) of an emission field of view (700) corresponding to the light source module (200) intersects with the first optical axis (101).

2. The headlamp according to claim 1, characterized in that: The light source module (200) comprises a plurality of light-emitting devices (201) arranged in an array, and the light-emitting devices (201) are Mini LEDs or Micro LEDs.

3. The headlamp according to claim 2, characterized in that: The emission field of view (700) corresponding to the light source module (200) comprises a first sub-field of view (702) and a second sub-field of view (703); The first optical axis (101) extends along a first direction, the first sub-field of view (702) and the second sub-field of view (703) are respectively arranged on both sides of the first optical axis (101) along a second direction, the first direction is a front-rear direction of the vehicle, and the second direction is a left-right direction of the vehicle; The viewing angle of the first sub-field of view (702) is greater than the viewing angle of the second sub-field of view (703).

4. The headlamp according to claim 3, characterized in that: The viewing angle of the first sub-field of view (702) is 15 degrees, and the viewing angle of the second sub-field of view (703) is 9 degrees.

5. The headlamp according to claim 2, characterized in that: A portion of the plurality of light-emitting devices (201) constitutes a first device group (210), and another portion constitutes a second device group (220), and the light-emitting devices (201) in the first device group (210) and the second device group (220) are both plural; In the lighting mode, all the light-emitting devices (201) in the first device group (210) emit light, and all the light-emitting devices (201) in the second device group (220) emit light; In the projection mode, all the light emitting devices (201) in the first device emit light, and all the light emitting devices (201) in the second device do not emit light.

6. The headlamp according to claim 2, characterized in that: A portion of the plurality of light-emitting devices (201) constitutes a first device group (210), and another portion constitutes a second device group (220), and the light-emitting devices (201) in the first device group (210) and the second device group (220) are both plural; In the lighting mode, all the light-emitting devices (201) in the first device group (210) emit light, all the light-emitting devices (201) in the second device group (220) emit light, and the light-emitting intensity of the light-emitting devices (201) in the first device group (210) is equal to the light-emitting intensity of the light-emitting devices (201) in the second device group (220); In the projection mode, all the light-emitting devices (201) in the first device emit light, all the light-emitting devices (201) in the second device emit light, and the light-emitting intensity of the light-emitting devices (201) in the first device group (210) is greater than the light-emitting intensity of the light-emitting devices (201) in the second device group (220).

7. The headlamp according to claim 5 or 6, characterized in that: The center of the first device group (210) is located on the first optical axis (101); or the center of the first device group (210) deviates from the first optical axis (101).

8. The headlamp according to claim 1, characterized in that: Along a second direction, the distance that the center of the light source module (200) deviates from the first optical axis (101) is greater than or equal to 1 mm and less than or equal to 2 mm, and the second direction is the left-right direction of the vehicle; And / or, along the height direction of the vehicle, the distance that the center of the light source module (200) deviates from the first optical axis (101) is greater than or equal to 0.7 mm and less than or equal to 1.2 mm.

9. A vehicle, characterized in that: The invention comprises a left headlight and a right headlight, wherein at least one of the left headlight and the right headlight is the headlight according to any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that The left headlight is the front headlight, and the center of the light source module (200) is located to the upper right of the first optical axis (101); Alternatively, the right headlight is the front headlight, and the center of the light source module (200) is located at the upper left of the first optical axis (101).

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