Illumination optical system and vehicle

Abstract

The invention provides an illumination optical system. The illumination optical system comprises a plurality of light source assemblies, a reflective bowl and a lens assembly. The reflective bowl comprises a plurality of reflective surfaces which are arranged in sequence. The lens assembly comprises a plurality of light incident surfaces which are arranged in sequence. The lighting optical system is provided with at least three sets of optical channels, and each channel comprises two adjacent light reflecting faces, two light source assemblies and two adjacent light incident faces of lens assemblies. Each channel emits a group of light spots, and each group of light spots comprises a central light spot, a left light spot and a right light spot. All the channels can emit at least three light spots with controllable brightness and adjustable intervals, after the light spots of all the channels are combined, a complete high beam light type is formed, the middle brightness and left-right broadening can be considered, and the technical problem that the high beam module with the limited aperture cannot illuminate the high beam width is effectively solved. The invention further provides a vehicle.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical systems, and in particular relates to a lighting optical system and a vehicle. Background Art

[0002] In the automotive lighting sector, slim strip lighting systems stand out among numerous designs due to their unique aesthetics and are highly sought after. However, compared to traditional automotive lighting systems, these slim strip lighting systems have a significant drawback: their relatively small optical aperture, resulting in low optical efficiency.

[0003] Due to optical efficiency limitations and limited energy input, this slender strip-shaped automotive lighting system struggles to achieve both long-range and wide-field road illumination. In practical applications, designers often face a trade-off between long-range illumination and wide-field illumination, which impacts driving convenience and safety.

[0004] To address this technical challenge, existing solutions have proposed a design approach: designating three to four LEDs specifically for the brightness of the central high beam area, thereby achieving long-range illumination; while another three to four LEDs are dedicated to broadening the high beam, achieving a wide field of view. However, while this approach improves lighting performance to a certain extent, it also introduces new problems. Dividing the lens area into unevenly sized regions compromises the aesthetics of the entire lighting system, which contradicts the original goal of a slender strip lighting system, which aims for aesthetically pleasing design.

[0005] In summary, how to solve the technical problem that the high beam module with limited aperture cannot simultaneously achieve wide and long illumination without destroying the aesthetics has become a technical difficulty that technicians in this field urgently need to overcome. Summary of the Invention

[0006] The object of the present invention is to provide an illumination optical system and a vehicle, which can take into account both the middle brightness and the left and right width, and effectively solve the technical problem that the high beam module with limited aperture cannot illuminate far and wide.

[0007] In order to solve the above technical problems, the present invention provides an illumination optical system, comprising: a plurality of light source components, a reflective bowl and a lens component;

[0008] The reflective bowl includes a plurality of reflective surfaces arranged in sequence;

[0009] The lens assembly includes a plurality of light incident surfaces arranged in sequence;

[0010] One of the light reflecting surfaces is provided with one of the light source components and one of the light incident surfaces, a channel for light propagation is formed between the light reflecting surface and the light incident surface, and one of the channels corresponds to two adjacent light reflecting surfaces;

[0011] The light from the light source assembly is reflected by the reflective surface of the reflective bowl, enters the lens assembly and then is emitted;

[0012] In which, the illumination optical system includes at least three channels, each of the channels emits a group of light spots, and a group of light spots includes a central light spot, a left light spot and a right light spot. In all the channels, the central light spot, the left light spot and the right light spot of at least three groups of light spots have different brightness, and the distances between the left light spot and the right light spot and the central light spot in at least three groups of light spots are different. All the light spots are combined to form a high beam light pattern with high central brightness and widening on both sides.

[0013] Optionally, in the above-mentioned illumination optical system, the surface shape of each of the reflecting surfaces is an ellipsoidal spherical surface, and each of the reflecting surfaces has two foci, which respectively coincide with the light emitting center of the corresponding light source assembly and the light incident surface position of the lens assembly.

[0014] Optionally, in the above-mentioned illumination optical system, each light incident surface in each of the channels has a point near the staggered reflective surface as an object point and an image point at infinity;

[0015] Alternatively, each light incident surface in each of the channels takes a point near the oppositely arranged light reflecting surface as the object point and takes infinity as the image point.

[0016] Optionally, in the above-mentioned illumination optical system, in each of the channels, the incident position of the light from the light source assembly on the lens assembly is controlled by adjusting the shape of the reflecting surface, thereby adjusting the brightness values ​​of the center light spot, left light spot and right light spot in each of the channels.

[0017] Optionally, in the above-mentioned illumination optical system, each of the light incident surfaces and / or each of the light reflecting surfaces is provided with an optical microstructure for uniformly diffusing light.

[0018] Optionally, the above-mentioned illumination optical system further includes a plurality of baffles, with one baffle being arranged between adjacent channels.

[0019] Optionally, the above-mentioned illumination optical system further includes a lens holder for supporting the reflective bowl and the lens assembly.

[0020] Optionally, in the above-mentioned illumination optical system, the light source assembly includes at least one LED lamp.

[0021] Optionally, in the above-mentioned illumination optical system, the illumination optical system includes three channels, the number of the light source assemblies is six, the reflective bowl includes six reflective surfaces, and the lens assembly includes six light incident surfaces.

[0022] The present invention also provides a vehicle comprising the lighting optical system as described above.

[0023] The present invention provides an illumination optical system, which has the following beneficial effects:

[0024] The illumination optical system is designed with at least three optical channels, each consisting of two adjacent reflective surfaces, two light source assemblies, and the incident surfaces of two adjacent lens assemblies. Each channel emits a set of light spots, consisting of a center spot, a left spot, and a right spot. All channels can emit at least three light spots with controllable brightness and adjustable spacing. The combined light spots from all channels form a complete high-beam pattern that balances center brightness and left-right spread, effectively solving the technical problem of high-beam modules with limited apertures being unable to illuminate both far and wide.

[0025] The present invention also provides a vehicle having the above-mentioned lighting optical system, which has the same beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of an illumination optical system provided by an embodiment of the present invention;

[0028] Figure 2 A top view of the optical path of an illumination optical system provided by an embodiment of the present invention;

[0029] Figure 3 A side view of the optical path of an illumination optical system provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of light spots of three channels of an illumination optical system provided by an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of a light spot formed by three channels of an illumination optical system provided by an embodiment of the present invention;

[0032] Figure 6An optical simulation effect diagram of an illumination optical system provided by an embodiment of the present invention;

[0033] Figure 7 A schematic structural diagram of another illumination optical system provided by an embodiment of the present invention;

[0034] Figure 8 A top view of the optical path of another illumination optical system provided by an embodiment of the present invention.

[0035] In the above picture:

[0036] 100-light source assembly;

[0037] 200-reflective bowl; 210-first reflective surface; 220-second reflective surface; 230-third reflective surface; 240-fourth reflective surface; 250-fifth reflective surface; 260-sixth reflective surface;

[0038] 300-lens assembly; 310-first light incident surface; 320-second light incident surface; 330-third light incident surface; 340-fourth light incident surface; 350-fifth light incident surface; 360-sixth light incident surface;

[0039] 400-lens holder;

[0040] 500- baffle;

[0041] H1-first channel; H2-second channel; H3-third channel. DETAILED DESCRIPTION

[0042] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0043] The core of the present invention is to provide an illumination optical system and a vehicle, which can take into account both the middle brightness and the left and right width, and effectively solve the technical problem that the high beam module with limited aperture cannot illuminate far and wide.

[0044] In order to enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Specifically, please refer to Figures 1-8 The present invention provides an illumination optical system, comprising: a plurality of light source assemblies 100, a reflective bowl 200 and a lens assembly 300.

[0046] The reflector 200 includes a plurality of reflective surfaces arranged in sequence, and each light source assembly 100 is disposed above each reflective surface of the reflector 200. The lens assembly 300 includes a plurality of light incident surfaces arranged in sequence.

[0047] A light source assembly 100 and a light incident surface are arranged corresponding to a reflective surface, and a channel for light propagation is formed between the reflective surface and the light incident surface. One channel corresponds to two adjacent reflective surfaces and two light incident surfaces arranged opposite to the above two reflective surfaces.

[0048] like Figure 2 and Figure 3 As shown, the light propagation path of each channel is as follows: the light from the light source assembly 100 is reflected by the reflective surface of the reflective bowl 200, enters the lens assembly 300, and then is emitted. According to the different imaging modes of the two incident surfaces of the lens assembly 300, the light will leave the optical system at different refraction angles, forming a set of light spots.

[0049] The illumination optical system includes at least three channels, each channel emits a group of light spots, and a total of at least three groups of light spots are emitted. A group of light spots includes a central light spot, a left light spot, and a right light spot. It should be noted that in the above position relationship, the observation is based on the angle of the vehicle's driving position. The left light spot is located to the left of the central light spot, and the right light spot is located to the right of the central light spot. For details, see Figure 4 .

[0050] Among them, in all channels, at least three groups of light spots have different brightness of the central spot, left spot and right spot, and at least three groups of light spots have different distances from the left spot and the right spot to the central spot. All the light spots are combined to form a high beam light pattern with high brightness in the center and widened on both sides. Figure 5 and Figure 6 .

[0051] The illumination optical system provided in this solution is designed with at least three optical channels. Each channel includes two adjacent reflective surfaces, two light source assemblies 100, and two adjacent light-incident surfaces, emitting at least three light spots with controllable brightness and adjustable spacing. The light spots from these multiple channels are combined to form a complete high-beam pattern that balances mid-range brightness and left-right spread, effectively resolving the technical challenge of high-beam modules with limited apertures being unable to illuminate both far and wide.

[0052] To achieve the aforementioned light emission pattern, in a further specific embodiment, each reflective surface is ellipsoidal, with each reflective surface having two focal points, which respectively coincide with the luminous center of the corresponding light source assembly 100 and the light incident surface of the lens assembly 300. When the luminous center of the light source assembly 100 is located at one focal point of the ellipsoidal reflective surface, the light emitted by the light source assembly 100 is reflected by the ellipsoidal reflective surface to form a convergent beam, which then passes through the other focal point of the ellipsoidal reflective surface. This design effectively collects and focuses the light emitted by the light source assembly 100, improving light utilization, and is often used in applications requiring long-distance lighting.

[0053] Similarly, to design the aforementioned high-beam module for long-range illumination, in one embodiment, each light-entering surface in each channel uses a point near the offset reflective surface as the object point and infinity as the image point. In another embodiment, each light-entering surface in each channel uses a point near the opposite reflective surface as the object point and infinity as the image point.

[0054] The object point is the starting point of the light in the illumination optical system, typically the location of the light source assembly 100. The image point is the point in the illumination optical system where light converges after reflection or refraction. Setting the image point to "infinity" means that the light will become parallel after reflection from a reflective surface, or that the light will be focused to infinity after being processed by the lens assembly 300.

[0055] In a preferred embodiment, the illumination optical system includes three channels: a first channel H1, a second channel H2, and a third channel H3, emitting three sets of light spots. The illumination optical system includes six light source assemblies 100, the reflector 200 has six reflective surfaces, and the lens assembly 300 has six light incident surfaces. Each channel includes two light source assemblies 100, each corresponding to a reflective surface. Each reflective surface has two focal points: the first focal point is located at the center of light emission of the light source assembly 100, and the second focal point is located on the light incident surface of the lens assembly 300.

[0056] As Figure 1 Taking the first channel H1 as an example, the lens assembly 300 comprises two regions: a first light-entering surface 310 and a second light-entering surface 320. The imaging method of the lens assembly 300 is as follows: the first light-entering surface 310 uses a point near the first light-reflecting surface 210 within the channel as the object point, and infinity as the image point; the second light-entering surface 320 uses a point near the second light-reflecting surface 220 within the channel as the object point, and infinity as the image point. The lens imaging methods for the second and third channels H2 and H3 are similar.

[0057] The simulation results of optical simulation software show:

[0058] The spot data of the first channel H1 is as follows: the center spot has the highest brightness, the brightness of the left and right spots is 50% of the brightness of the center spot, and the distance between the left and right spots and the center spot is 10°.

[0059] The spot data of the second channel H2 is as follows: the brightness of the central spot, the left spot, and the right spot are basically the same, and the distance between the left spot and the right spot and the central spot is 7.5°.

[0060] The spot data of the third channel H3 is as follows: the brightness of the central spot is low, the brightness of the left and right spots is 125% of the brightness of the central spot, and the distance between the left and right spots and the central spot is 4°.

[0061] The light spots of the three channels are combined, complementing each other and overlapping, creating an effect of high brightness in the center and gradually decreasing brightness on both sides. The light pattern obtained by simulating the above illumination optical system is: the light pattern is uniform and full, with high brightness in the center and sufficient width on both sides.

[0062] In another preferred embodiment, the illumination optical system includes three channels: a first channel H1, a second channel H2, and a third channel H3, emitting three sets of light spots. The illumination optical system includes six light source assemblies 100, the reflector bowl 200 has six reflective surfaces, and the lens assembly 300 has six light incident surfaces. Each channel includes two light source assemblies 100, each corresponding to a reflective surface. Each reflective surface has two focal points: the first focal point is located at the light emission center of the light source assembly 100, and the second focal point is located on the light incident surface of the lens assembly 300.

[0063] In this embodiment, the shape of the light incident surface of the lens assembly 300 is Figure 1 The embodiments shown are different.

[0064] As Figure 5 Taking the first channel H1 as an example, the lens assembly 300 comprises two regions: a first light-entering surface 310 and a second light-entering surface 320. The imaging method of the lens assembly 300 is as follows: the first light-entering surface 310 uses a point near the second light-reflecting surface 220 within the channel as the object point, and infinity as the image point; the second light-entering surface 320 uses a point near the first light-reflecting surface 210 within the channel as the object point, and infinity as the image point. The lens imaging methods for the second and third channels H2 and H3 are similar.

[0065] Since the shapes and corresponding relationships of the light incident surface and the light reflecting surface of this embodiment are different, such as Figure 6 As shown, the second focus of the reflective surface is located at the position of the light incident surface of the lens assembly 300. Figure 1 The embodiment shown is different. In this way, the brightness values ​​of the central light spot, the left light spot and the right light spot are adjusted.

[0066] Therefore, within each channel, the incident position of light from light source assembly 100 on lens assembly 300 can be controlled by adjusting the shape of the reflective surface, thereby adjusting the brightness of the central light spot, left light spot, and right light spot within each channel. Furthermore, by adjusting the relative position of the two reflective surfaces (including the corresponding relative position of light source assembly 100), the distance from the left and right light spots to the central light spot can be adjusted.

[0067] Compared to Figure 1 In the embodiment shown, the wall thickness variation of the lens assembly 300 in this embodiment is small. Therefore, within each channel, the imaging object points of the two light-entering surfaces of the lens assembly 300 can be swapped, thereby obtaining a lens with small wall thickness variation, which helps reduce the risk of lens injection defects.

[0068] Of course, it is also possible to increase the number of channels and light source assemblies 100 to form a high beam light pattern with higher central brightness and wider width on both sides, thereby achieving a farther and wider road lighting effect.

[0069] All light source assemblies 100 and all reflective surfaces in this system contribute to the central brightness of the high beam. Through the synergistic effect of the reflective and incident surfaces, the optical system efficiently collects and utilizes light emitted by the object point, minimizing light loss. This arrangement not only improves the product's long-range illumination capability but also enhances the stability of the product's central brightness, effectively preventing significant fluctuations in central light intensity caused by a single factor.

[0070] In specific embodiments, optical microstructures are provided on each light-entering surface and / or each light-reflecting surface to achieve uniform light diffusion and improve the uniformity of road lighting. These optical microstructures are typically very small and can be formed into patterns, etc. High-precision processing techniques, such as photolithography and etching, are typically required to ensure the shape and dimensional accuracy of the optical microstructures.

[0071] This solution also includes a plurality of baffles 500 , with one baffle 500 being provided between adjacent channels.

[0072] This solution further includes a lens bracket 400 for supporting the reflective bowl 200 and the lens assembly 300. The lens assembly 300 is fixed on the lens bracket 400.

[0073] In one embodiment, the light source assembly 100 is an LED lamp, and the number is at least one. In other embodiments, the light source assembly 100 may also be other light-emitting devices.

[0074] For example, when the illumination optical system includes three channels, two baffles 500 are provided to divide the illumination optical system into three channels. The reflector bowl 200 has six reflective surfaces: a first reflective surface 210, a second reflective surface 220, a third reflective surface 230, a fourth reflective surface 240, a fifth reflective surface 250, and a sixth reflective surface 260. Each reflective surface is an ellipsoidal spherical surface. The lens assembly 300 and the two baffles 500 are fixed to the lens holder 400. The light incident surface of the lens assembly 300 includes six regions: a first light incident surface 310, a second light incident surface 320, a third light incident surface 330, a fourth light incident surface 340, a fifth light incident surface 350, and a sixth light incident surface 360.

[0075] Furthermore, the present invention also provides a vehicle, which includes the lighting optical system according to any one of the above embodiments.

[0076] Obviously, a vehicle including the above-mentioned lighting optical system has the same beneficial effects, which will not be described in detail here.

[0077] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do 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, they cannot be understood as limitations on this application.

[0078] In the description of this application, the meaning of "plurality" is more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0079] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0080] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "plurality" means two or more than two.

[0081] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0082] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0083] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An illumination optical system, characterized in that: include: A plurality of light source assemblies (100), a reflective bowl (200) and a lens assembly (300); The reflective bowl (200) comprises a plurality of reflective surfaces arranged in sequence; The lens assembly (300) comprises a plurality of light incident surfaces arranged in sequence; One light source assembly (100) and one light incident surface are provided corresponding to one of the reflective surfaces, a channel for light propagation is formed between the reflective surface and the light incident surface, and one channel corresponds to two adjacent reflective surfaces; Light from the light source assembly (100) is reflected by the reflective surface of the reflective bowl (200), enters the lens assembly (300), and then is emitted; In which, the illumination optical system includes at least three channels, each of the channels emits a group of light spots, and a group of light spots includes a central light spot, a left light spot and a right light spot. In all the channels, the central light spot, the left light spot and the right light spot of at least three groups of light spots have different brightness, and the distances between the left light spot and the right light spot and the central light spot in at least three groups of light spots are different. All the light spots are combined to form a high beam light pattern with high central brightness and widening on both sides.

2. The illumination optical system according to claim 1, wherein The surface shape of each reflective surface is an ellipsoidal spherical surface, and each reflective surface has two focal points, and the two focal points respectively coincide with the light emitting center of the corresponding light source component (100) and the light incident surface position of the lens component (300).

3. The illumination optical system according to claim 1 or 2, wherein: Each light incident surface in each of the channels takes a point near the staggered reflective surface as an object point and takes infinity as an image point; Alternatively, each light incident surface in each of the channels takes a point near the oppositely arranged light reflecting surface as the object point and takes infinity as the image point.

4. The illumination optical system according to claim 1, wherein In each of the channels, the incident position of the light of the light source assembly (100) on the lens assembly (300) is controlled by adjusting the shape of the reflective surface, thereby adjusting the brightness values ​​of the central light spot, the left light spot, and the right light spot in each of the channels.

5. The illumination optical system according to claim 1, wherein An optical microstructure for uniformly diffusing light is provided on each of the light incident surfaces and / or each of the light reflecting surfaces.

6. The illumination optical system according to claim 1, wherein It also includes a plurality of baffles (500), with one baffle (500) being arranged between adjacent channels.

7. The illumination optical system according to claim 1, wherein It also includes a lens bracket (400) for supporting the reflective bowl (200) and the lens assembly (300).

8. The illumination optical system according to claim 1, wherein The light source assembly (100) comprises at least one LED lamp.

9. The illumination optical system according to any one of claims 1 to 8, wherein: The illumination optical system comprises three channels, the number of the light source assemblies (100) is six, the reflective bowl (200) comprises six reflective surfaces, and the lens assembly (300) comprises six light incident surfaces.

10. A vehicle, characterized in that: The illumination optical system comprises the illumination optical system according to any one of claims 1 to 9.

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