Wide-angle and large-aperture optical structure for pixelated vehicle lamp, vehicle lamp, and vehicle

Abstract

A wide-angle and large-aperture optical structure for a pixelated vehicle lamp, a vehicle lamp, and a vehicle, the optical structure comprising: a light source (6), which is configured to emit incident light. A lens assembly is disposed on the emission path of the incident light emitted by the light source (6); the lens assembly comprises a first lens (1), a second lens (2), a third lens (3), a fourth lens (4), and a fifth lens (5), wherein the first lens (1), the second lens (2), the third lens (3), the fourth lens (4), and the fifth lens (5) are arranged in sequence in a direction closer to the light source (6), enabling the light emitted by the light source (6) to be emitted out after sequentially passing through the fifth lens (5), the fourth lens (4), the third lens (3), the second lens (2), and the first lens (1). Enabling light emitted by the light source (6) to sequentially pass through a plurality of lenses for refraction yields continuous changes in the path of the emitted light from the light source (6) through the plurality of lenses, and the refracted light can form a large aperture, thus meeting the requirements for efficient lighting. Moreover, the present optical structure has a high resolution, and thereby provides a high-resolution pixelated lighting effect.

Description

Wide-angle, large-aperture, pixelated headlight optical structure, headlights, and vehicles Technical Field

[0001] The present invention relates to the field of vehicle lighting technology, and in particular to a wide-angle, large-aperture, pixelated vehicle light optical structure. Furthermore, the present invention also relates to a vehicle light and a vehicle. Background Art

[0002] As automotive lighting evolves toward intelligent and pixelated technologies, pixelated headlights using Micro-LEDs as their light source are becoming a key development direction for future headlights. Pixelated light sources feature tiny, independently emitting pixels, each with adjustable intensity. When paired with an optical system, the emitted light pattern becomes pixelated, enabling adaptive high and low beam lighting scenarios. Furthermore, as the number of pixels increases, headlight patterns will be even more precisely controlled, enabling on-demand illumination, fulfilling the promise of low-carbon, energy-efficient, and efficient lighting.

[0003] Traditional optical structures can only meet the requirements of adaptive high and low beams of dozens of pixels, and cannot meet the needs of high-resolution adaptive high and low beams based on Micro-LEDs. With the maturity of Micro-LED technology, the development of optical systems based on high-resolution Micro-LED light sources has become a key development direction in the future.

[0004] In view of this, it is necessary to design a wide-angle, large-aperture, pixelated headlight optical structure to meet actual needs.

[0005] Summary of the Invention

[0006] In response to the above-mentioned technical problems to be solved, the first aspect of the present invention provides a wide-angle, large-aperture, pixelated car light optical structure, which has a large aperture and can meet the requirements of efficient lighting, while also having high resolution and meeting the high-resolution pixelated lighting effect.

[0007] In order to solve the above technical problems, the first aspect of the present invention provides a wide-angle, large-aperture, pixelated headlight optical structure, comprising:

[0008] a light source for emitting incident light;

[0009] A lens assembly is arranged on the exit path of the incident light emitted by the light source, and the lens assembly includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are arranged in sequence toward the light source so that the light emitted by the light source can pass through the fifth lens, the fourth lens, the third lens, the second lens and the first lens in sequence and then be emitted.

[0010] Preferably, the first lens has positive optical power, the second lens has negative optical power, the third lens has positive optical power, the fourth lens has positive optical power, and the fifth lens has positive optical power.

[0011] Further preferably, the second lens and the third lens are glued together to form an integral body, or the second lens and the third lens are provided independently of each other.

[0012] Preferably, the lens assembly is supported by optical glass or optical plastic, and the optical Abbe number Vd(2) of the second lens having negative optical power is less than 25, and the optical Abbe number Vd(1 / 3 / 4 / 5) of each of the first lens, the third lens, the fourth lens and the fifth lens having positive optical power is greater than 40.

[0013] Further preferably, the front surface of the first lens is convex, and the radius of the front surface of the first lens is smaller than the radius of the back surface of the first lens, the front surface of the second lens is concave, and the radius of the front surface of the second lens is smaller than the radius of the back surface of the second lens, the back surface of the third lens is convex, and the radius of the front surface of the third lens is larger than the radius of the back surface of the third lens, the front surface of the fourth lens is convex, and the radius of the front surface of the fourth lens is smaller than the radius of the back surface of the fourth lens, and the front surface of the fifth lens is convex.

[0014] Further preferably, it further includes a system stop and a vignetting stop, wherein the system stop is arranged in front of or behind the first lens, and the vignetting stop is arranged between the third lens and the fourth lens, and / or between the fourth lens and the fifth lens.

[0015] Preferably, the front surface clear aperture of the second lens is smaller than the front surface clear aperture of the third lens.

[0016] Further preferably, the focal length f2 and the effective focal length f of the second lens satisfy: 0.8<|f2 / f|<1.4.

[0017] A second aspect of the present invention provides a vehicle lamp comprising the wide-angle, large-aperture, pixelated vehicle lamp optical structure described in the first aspect of the present invention.

[0018] A third aspect of the present invention provides a vehicle comprising the vehicle lamp according to the second aspect of the present invention.

[0019] Through the above-mentioned preferred technical solution, the wide-angle, large-aperture, pixelated car light optical structure of the present invention cooperates with each other between lens components, so that the light emitted by the light source can be refracted between multiple lenses in sequence, thereby causing the path of the outgoing light emitted by the light source to continuously change in the multiple lenses, and finally emitted from the first lens. The refracted light can form a large aperture to meet the requirements of efficient lighting, while having high resolution and meeting the high-resolution pixelated lighting effect.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of the optical structure of a wide-angle, large-aperture pixelated headlight according to a specific embodiment of the present invention;

[0022] FIG2 is a distortion diagram of the optical structure of a wide-angle, large-aperture pixelated headlight according to a specific embodiment of the present invention;

[0023] FIG3 is a MIF diagram of the optical structure of a wide-angle, large-aperture pixelated headlight according to a specific embodiment of the present invention;

[0024] FIG4 is a schematic diagram of the optical structure of a wide-angle, large-aperture pixelated headlight according to another embodiment of the present invention;

[0025] FIG5 is a diagram showing the optical distortion of a wide-angle, large-aperture pixelated headlight according to another embodiment of the present invention;

[0026] FIG6 is a MIF diagram of the optical structure of a wide-angle, large-aperture pixelated headlight according to another embodiment of the present invention.

[0027] Reference Signs 1 First lens 2 Second lens 3 Third lens 4 Fourth lens 5 Fifth lens 6 Light source 7 System stop 8 Vignetting stop 11 First lens front surface 12 First lens back surface 21 Second lens front surface 22 Second lens back surface 31 Third lens front surface 32 Third lens back surface 41 Fourth lens front surface 42 Fourth lens back surface 51 Fifth lens front surface 52 Fifth lens back surface DETAILED DESCRIPTION

[0028] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "installed," and "connected" should be understood broadly. For example, the term "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] Referring to Figures 1 to 3 , a wide-angle, large-aperture, pixelated headlight optical structure according to a specific embodiment of the present invention includes at least a light source 6 and a lens assembly. Light source 6 is configured to emit incident light, and the lens assembly is disposed along the path of the incident light emitted by light source 6. Light source 6 is a pixel light source 6, each pixel being a Micro-LED light source 6 capable of independently emitting light. The lens assembly includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, and a fifth lens 5. The first lens 1, the second lens 2, the third lens 3, the fourth lens 4, and the fifth lens 5 are sequentially disposed toward light source 6 so that light emitted by light source 6 can sequentially pass through the fifth lens rear surface 52, the fifth lens front surface 51, the fourth lens rear surface 42, the fourth lens front surface 41, the third lens rear surface 32, the third lens front surface 31, the second lens rear surface 22, the second lens front surface 21, and the first lens rear surface 12, ultimately exiting from the first lens front surface 11.

[0031] Specifically, the first lens 1 has positive optical power, the second lens 2 has negative optical power, the third lens 3 has positive optical power, the fourth lens 4 has positive optical power, and the fifth lens 5 has positive optical power. The second lens 2 and the third lens 3 may be cemented together to form a single piece, or they may be independently provided.

[0032] Example 1

[0033] The lens assemblies are all made of optical glass or optical plastic, and the optical Abbe number Vd(2) of the second lens 2 with negative optical power is less than 25, and the optical Abbe number Vd(1 / 3 / 4 / 5) of each of the first lens 1, the third lens 3, the fourth lens 4 and the fifth lens 5 with positive optical power is greater than 40.

[0034] In addition, the front surface of the first lens 1 is convex, and the radius of the front surface of the first lens 1 is smaller than the radius of the rear surface of the first lens 1. The front surface of the second lens 2 is concave, and the radius of the front surface 21 of the second lens is smaller than the radius of the rear surface 22 of the second lens. The rear surface of the third lens 3 is convex, and the radius of the front surface 31 of the third lens is larger than the radius of the rear surface 32 of the third lens. The front surface of the fourth lens 4 is convex, and the radius of the front surface 41 of the fourth lens is smaller than the radius of the rear surface 42 of the fourth lens. The front surface of the fifth lens 5 is convex.

[0035] Specifically, the optical structure further includes a system aperture 7 and a vignetting aperture 8. The system aperture 7 is disposed in front of or behind the first lens 1. The vignetting aperture 8 is disposed between the third lens 3 and the fourth lens 4, or can also be disposed between the fourth lens 4 and the fifth lens 5. Moreover, the clear aperture of the front surface of the second lens 2 is smaller than the clear aperture of the front surface of the third lens 3, and the clear aperture D21 of the front surface 21 of the second lens is smaller than the clear aperture D31 of the front surface 31 of the third lens, so that D21 and D31 satisfy the relationship D21 < D31. At the same time, the focal length f2 of the second lens 2 and the effective focal length f satisfy: 0.8 < |f2 / f| < 1.4.

[0036] Referring to FIG. 2, when the absolute value of the distortion of the optical system is less than 4%, the projected light pattern is less deformed. Referring to FIG. 3, when the MTF within a 36-degree field of view of the optical system is greater than 30%, the resolution meets the requirements for adapting to high and low beams.

[0037] More specifically, the relevant parameters of each lens in the lens assembly are shown in Table 1 below:

[0038] Table 1

[0039] At the same time, multiple lenses in each lens assembly need to satisfy the constraint conditions shown in Table 2 below to ensure that the light can form a large aperture after passing through the lens assembly, so as to meet the requirements of high-efficiency lighting, and at the same time have high resolution to meet the requirements of high-resolution pixelated lighting effects.

[0040] Table 2

[0041] Embodiment 2

[0042] Referring to FIG. 4, the system aperture 7 is disposed between the first lens 1 and the second lens 2, and the vignetting aperture 8 is disposed between the third lens 3 and the fourth lens 4. Similarly, the clear aperture of the front surface of the second lens 2 is smaller than that of the front surface of the third lens 3, and the clear aperture D21 of the front surface 21 of the second lens is smaller than the clear aperture D31 of the front surface 31 of the third lens, so that D21 and D31 satisfy the relationship D21 < D31. At the same time, the focal length f2 of the second lens 2 and the effective focal length f satisfy: 0.8 < |f2 / f| < 1.4.

[0043] Referring to FIG. 5, in this setting, the absolute value of the distortion of the system is also less than 4%, so that the projected light pattern is less deformed. Referring to FIG. 5, when the optical system satisfies that the MTF within a 36-degree field of view is greater than 30%, the resolution meets the requirements of adaptive high and low beams.

[0044] More specifically, the relevant parameters of each lens in the lens assembly of another embodiment are shown in Table 3 below:

[0045] Table 3

[0046] At the same time, multiple lenses in each lens assembly need to meet the constraint conditions shown in Table 4 below to ensure that the light can form a large aperture after passing through the lens assembly, so as to meet the requirements of efficient lighting, and at the same time have high resolution to meet the high-resolution pixelated lighting effect.

[0047] Table 4

[0048] A vehicle headlight of the present invention adopts the wide-angle large-aperture pixelated vehicle headlight optical structure of the present invention, and thus also has the above advantages.

[0049] A vehicle of the present invention adopts a vehicle headlight of the present invention, and thus also has the above advantages. In the description of the present invention, the descriptions referring to terms such as "one embodiment", "some embodiments", "one implementation manner", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention may be subjected to various simple modifications, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A wide-angle, large-aperture, pixelated car light optical structure, characterized in that: include: A light source (6) for emitting incident light; A lens assembly is arranged on an emission path of incident light emitted by the light source (6), the lens assembly comprising a first lens (1), a second lens (2), a third lens (3), a fourth lens (4) and a fifth lens (5), wherein the first lens (1), the second lens (2), the third lens (3), the fourth lens (4) and the fifth lens (5) are arranged in sequence towards the light source (6), so that the light emitted by the light source (6) can be emitted after passing through the fifth lens (5), the fourth lens (4), the third lens (3), the second lens (2) and the first lens (1) in sequence.

2. The wide-angle, large-aperture, pixelated car light optical structure according to claim 1, characterized in that: The first lens (1) has positive focal power, the second lens (2) has negative focal power, the third lens (3) has positive focal power, the fourth lens (4) has positive focal power, and the fifth lens (5) has positive focal power.

3. The wide-angle, large-aperture, pixelated car light optical structure according to claim 2, characterized in that: The second lens (2) and the third lens (3) are glued together to form a whole, or the second lens (2) and the third lens (3) are arranged independently of each other.

4. The wide-angle, large-aperture, pixelated car light optical structure according to claim 2, characterized in that: The lens assemblies are all made of optical glass or optical plastic, and the optical Abbe number Vd(2) of the second lens (2) with negative optical power is less than 25, and the optical Abbe number Vd(1 / 3 / 4 / 5) of each of the first lens (1), the third lens (3), the fourth lens (4) and the fifth lens (5) with positive optical power is greater than 40.

5. The wide-angle, large-aperture, pixelated car light optical structure according to claim 4, characterized in that: The front surface of the first lens (1) is a convex surface, and the radius of the front surface of the first lens (1) is smaller than the radius of the rear surface of the first lens (1); the front surface of the second lens (2) is a concave surface, and the radius of the front surface of the second lens (2) is smaller than the radius of the rear surface of the second lens (2); the rear surface of the third lens (3) is a convex surface, and the radius of the front surface of the third lens (3) is larger than the radius of the rear surface of the third lens (3); the front surface of the fourth lens (4) is a convex surface, and the radius of the front surface of the fourth lens (4) is smaller than the radius of the rear surface of the fourth lens (4); and the front surface of the fifth lens (5) is a convex surface.

6. The wide-angle, large-aperture, pixelated car light optical structure according to claim 1, characterized in that: The optical system further comprises a system stop (7) and a vignetting stop (8), wherein the system stop (7) is arranged in front of or behind the first lens (1), and the vignetting stop (8) is arranged between the third lens (3) and the fourth lens (4), and / or between the fourth lens (4) and the fifth lens (5).

7. The wide-angle, large-aperture, pixelated car light optical structure according to claim 1, characterized in that: The front surface light aperture of the second lens (2) is smaller than the front surface light aperture of the third lens (3).

8. The wide-angle, large-aperture, pixelated vehicle light optical structure according to any one of claims 1 to 7, characterized in that: The focal length f2 and the effective focal length f of the second lens (2) satisfy: 0.8<|f2 / f|<1.

4.

9. A vehicle lamp, characterized in that: A wide-angle, large-aperture, pixelated headlight optical structure as claimed in any one of claims 1 to 8 is adopted.

10. A vehicle, characterized in that: The vehicle lamp according to claim 9 is adopted.

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