Ultra-narrow optical lens and vehicle lamp

Abstract

An ultra-narrow optical lens includes a reflector, a first lens, and a second lens. The reflector is provided with a starting point. The first lens or the second lens has a central optical axis. The first lens has at least a first focus and a second focus. The first focus of the first lens is at the starting point of the reflector, and the second focus is at infinity relative to the starting point. The second lens has at least a third focus and a fourth focus. The third focus of the second lens is at infinity relative to the starting point, and the fourth focus is at the starting point of the reflector. When observed along the central optical axis, the light passing through the first lens and the second lens forms multiple groups of convergent light in the horizontal and vertical directions. The technical solution of the present application can increase the brightness of the central area of ​​the light spot and improve the yellowing effect of the light spot.

Description

Technical Field

[0001] The invention belongs to the field of vehicle lamps, and in particular relates to an ultra-narrow optical lens and a vehicle lamp. Background Art

[0002] With the continuous development of optical technology, lens groups, as an important component of optical systems, have been widely used in various fields. However, in the field of automotive lighting, traditional lens groups often have problems such as large size, heavy weight, and low production efficiency, which makes it difficult to meet the requirements of modern optical equipment for high performance, miniaturization, and lightweight.

[0003] The traditional lens group of the headlight is usually composed of multiple lenses. The distance between the lenses and the focal length of the lenses are adjusted to achieve the convergence and divergence of light, thereby forming the light spot required for lighting. The formation of the light spot needs to consider the color of the light, the horizontal and / or vertical extension or contour of the light distribution, the maximum illuminance value, the position of the maximum illuminance within the light distribution, the light distribution at the light-dark boundary, the existence, design, route and / or position or any other feature of the iso-illuminance line route. However, this solution often requires the use of thicker lenses, resulting in a large lens group, heavy weight, and low production efficiency.

[0004] The most common problem of current headlight modules is the dispersion of light at the light-emitting surface of the lens, which is mainly reflected in the separated yellow light and blue light on the light spot. In theory, the superposition of the separated yellow light and blue light from adjacent light spots will re-form pure white light, but in reality, technicians have found that the brightness of the light spot, that is, the light density, tends to decrease along the direction of separation of the yellow light and the blue light. Therefore, the intensity of the superimposed yellow light is greater than the intensity of the blue light, resulting in the overall yellowing of the light spot intensity.

[0005] The problems that yellowish light spots bring to driving include: yellowish light may reduce the driver's visual effect. When driving at night, the yellow light will cause a strong contrast with the white light in the driver's eye perception, thereby weakening the driver's ability to recognize roads and obstacles; the contrast is reduced. The yellowish light may reduce the contrast on the road, making it more difficult to notice obstacles, vehicles, pedestrians, etc., thereby causing traffic accidents.

[0006] The Chinese patent application number is "CN202310187589.X" and the patent name is "Optical lens module and car light". The patent discloses an optical lens module, including a first lens, a lens group and a curved total reflection lens, wherein the lens group includes a second lens and a third lens, the second lens is integrally formed with the first lens, the third lens is arranged on one side of the second lens, the real focus of the lens group is located outside the second lens, the side of the first lens facing away from the third lens includes a light incident surface and an inclined surface connected to each other, the curved total reflection lens is arranged below the inclined surface, and the side of the curved total reflection lens facing away from the inclined surface is convex. The light emitted by the external light source of the present application can enter from the light incident surface, be reflected by the curved total reflection lens, and after being reflected by the inclined surface, the lens group can project the light after the inclined surface reflection as parallel light, that is, the light after the inclined surface reflection can be projected as parallel light by the lens group. The light path of the present application is folded, which shortens the module length, and the final light type of the optical (low beam) lens module provided by the present application is the image of the light beam reflected by the curved total reflection lens, and the edge of the curved total reflection lens is the boundary line that forms the cutoff line of the low beam light type. For the traditional lens structure, the present application can form a good cutoff line color, which is close to dispersion-free.

[0007] The Chinese patent application number is "CN202310187410.0" and the patent name is "Optical Lens and Car Light". The optical lens includes a first lens, a lens group and a curved total reflection lens, wherein the lens group includes a second lens and a third lens, the second lens and the first lens are integrally formed, the third lens is arranged on one side of the second lens, and the real focus of the lens group is located in the second lens. The side of the first lens of this application facing away from the third lens includes a light incident surface and a first inclined surface connected to each other, the curved total reflection lens is arranged below the first inclined surface, and the side of the curved total reflection lens facing away from the first inclined surface is convex. The light emitted by the external light source can enter from the light incident surface, be reflected by the curved total reflection lens, and then be reflected by the first inclined surface to converge to the real focus, and then the lens group projects the light passing through the real focus as parallel light, that is, the real focus of the lens group is located at the convergence point of the reflected light of the curved total reflection lens. The optical path folding of the present application shortens the length of the module, and the final light pattern of the optical lens (high beam) provided by the present application is the imaging of the light beam at the real focus of the lens group, and thus the brightness, color and uniformity of the high beam light pattern projected by the optical lens of the present application are all good.

[0008] That is to say, the existing technology solves the problem of partial yellowing of the light pattern and poor light perception by folding the light path and shortening the length of the module. However, the high and low beam light patterns are parallel light. If the module is used in ultra-narrow headlights, the maximum light intensity at the center point is not strong enough, and the width is also relatively narrow, that is, the distance of the high and low beam light patterns is not far enough, and the light intensity on both sides of the road is not enough, so there is room for improvement. Summary of the invention

[0009] In view of the above-mentioned prior art, an object of the present invention is to provide a more practical ultra-narrow optical lens and vehicle lamp.

[0010] The technical solution of the present invention is implemented as follows: an ultra-narrow optical lens includes a reflector, a first lens and a second lens, the reflector is provided with a starting point, the first lens or the second lens has a central optical axis, the first lens has at least a first focus and a second focus, the first focus of the first lens is at the starting point of the reflector, and the second focus is at infinity relative to the starting point, the second lens has at least a third focus and a fourth focus, the third focus of the second lens is at infinity relative to the starting point, and the fourth focus is at the starting point of the reflector, when observed along the central optical axis, the light passing through the first lens and the second lens forms multiple groups of converging light in the horizontal and vertical directions.

[0011] The beneficial effects of such a design are as follows: the lens group composed of the first lens and the second lens is thinner and lighter than a single lens, the reflector generates a large amount of parallel light or nearly parallel light in both the horizontal and vertical directions, the parallel light and nearly parallel light are refracted by the lens group composed of the first lens and the second lens to form focused light in both the horizontal and vertical directions, and the focused light can effectively improve the problem of yellowing of the edge of the light spot compared to parallel light, and the focused light can expand the irradiation range, especially for ultra-narrow lenses, which can further reduce the longitudinal size and have a larger irradiation range, and can also improve the visual effect of the headlights, which can be said to kill two birds with one stone. The ultra-narrow headlights not only conform to the trend of contemporary popular aesthetics but also reduce the weight of the headlights. The amount can reduce the production cost of the headlight, and the headlight is lighter and thinner with higher production efficiency. The first focus of the first lens is at the starting point of the reflector, and the fourth focus of the second lens is at the starting point of the reflector. The non-parallel light reflected by the reflector can be evenly irradiated, which can effectively solve the problem that the brightness of the light spot, that is, the light density, shows a downward trend along the direction of separation of yellow light and blue light, and improves the yellowing effect of the light spot. The cylindrical lens has a lower processing cost, and the light intensity at the starting point of the reflector is higher. Utilizing the non-parallel light at this position can effectively improve the yellowing effect of the light spot. If the reflector is too close to the first lens and the second lens, the light will be very scattered, and the technical solution of the present application can increase the brightness of the central area of ​​the light spot and improve the yellowing effect of the light spot.

[0012] Furthermore, the first lens can collect the light reflected by the reflector to infinity in the longitudinal direction, and can collect the reflected light to or near the mirror image position of the first focus relative to the first principal plane of the first lens in the transverse direction. The second lens is arranged on one side of the first lens, and the second lens can collect the light passing through the first lens to or near the mirror image position of the fourth focus relative to the second principal plane of the second lens in the longitudinal direction, and can collect the light to infinity in the transverse direction. In this way, the first lens and the second lens are both cylindrical lenses, which can reduce the thickness of the lens to achieve the purpose of reducing production costs.

[0013] Furthermore, the first lens and the second lens are both provided with a plane side and a curved side, the plane side being closer to the light source than the curved side, and parallel light rays vertically incident on the first lens and the second lens can reduce the path of the light rays refracted by the first lens and the second lens, thereby reducing the visual effect of yellow light spots caused by refraction.

[0014] Furthermore, the first lens has a first focal line and the second lens has a second focal line, the first focal line of the first lens is located in the longitudinal direction, the second focal line of the second lens is located in the transverse direction, and the distance between the first focal line and the first principal plane of the first lens is smaller than the distance between the second focal line and the second principal plane of the second lens. In this way, the width of the light spot formed is wider and can illuminate more areas. When designing different light spots, the focal length of the first lens or the second lens can be directly adjusted, that is, different light spots can be formed by using different lens combinations as needed.

[0015] Furthermore, the first focal line of the first lens is perpendicular to the second focal line of the second lens, and the first principal plane of the first lens forms a certain angle with the second principal plane of the second lens. Such a design can achieve a change in focal length in the horizontal or vertical direction by changing the angle of the first principal plane of the first lens or the second principal plane of the second lens, that is, the focal length can be reduced for the same thickness, and the thickness can be reduced for the same focal length, which can reduce the production cost.

[0016] Furthermore, the first principal plane of the first lens is inclined at a certain angle relative to the horizontal plane, and the reflector is provided with an end face inclined downward, so that the first lens can close the opening of the reflector so that the light of the reflector basically needs to pass through the first lens before being emitted forward. Since the first lens is inclined, part of the light will be reflected to the reflector after reaching the first lens, and most of the light reflected by the reflector is basically parallel. Therefore, the light reflected by the first lens is basically parallel, and the parallel light is reflected to form focused light after reaching the reflector. This part of the focused light will be emitted downward at an angle, and will be scattered on the nearby ground through the action of the second lens. In particular, if an electric bicycle uses the ultra-narrow optical lens, it can make the area near the car brighter when parking. The speed of the electric bicycle is slower, and illuminating the bottom surface near the headlights can also make the rider feel safer in areas without street lights on a dark night, and the user experience is better.

[0017] Furthermore, the first lens and the second lens have the same central optical axis, so that light can be emitted along a straight line at the position of the central optical axis, which facilitates controlling the illumination direction of the vehicle light.

[0018] Furthermore, the distance between the second focal line and the second principal plane of the second lens is greater than twice the distance between the first focal line and the first principal plane of the first lens, so that a wider light spot can be generated and the irradiation range is larger.

[0019] Furthermore, the reflector is provided with a reflection zone and a scattering zone. The reflection zone is closer to the starting point of the reflector than the scattering zone. A third zone reflector is provided below the first lens and behind the second lens. This can make the light more dispersed and reduce the yellowing problem of light caused by refraction. The light near the headlights is also increased accordingly. The third zone reflector can make full use of light with a larger inclination angle.

[0020] A headlight comprises the above-mentioned ultra-narrow optical lens and a light source, wherein the light source is located at the focal position of a reflector. The headlight comprises a transversely arranged rotation axis, and a first lens is mounted on the rotation axis so that the first lens can rotate relative to the reflector, so that the focal length of the first lens in the horizontal direction can be changed by rotating the rotation axis, thereby changing the transverse width of the light spot, and the headlight can be adjusted according to different road conditions. The width should be increased when there are many curves, and more light can be gathered to the front when there are more straight lines, that is, the focal length can be reduced. The larger the inclination angle of the first lens, the smaller the focal length. When the first lens is in a vertical position, the irradiation distance is the farthest, and when it is in a position with the maximum inclination angle, the irradiation width is the largest.

[0021] Furthermore, the rotating shaft is provided with a turbine, and the turbine is matched with the worm, so that a self-locking function can be achieved, ensuring that the headlight can be locked in a specific focal length range, ensuring more stable lighting.

[0022] Furthermore, the worm is driven by a motor to achieve automatic rotation, which is more convenient than manual adjustment and can be linked with the steering wheel, that is, turning the steering wheel changes the focal length of the car light. The more the steering wheel is turned, the smaller the focal length and the larger the illumination range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional schematic diagram of an ultra-narrow optical lens of the present invention;

[0024] Figure 2 This is a schematic diagram of the longitudinal light path of Example 1 of the present invention;

[0025] Figure 3 This is a schematic diagram of the horizontal light path of Example 1 of the present invention;

[0026] Figure 4 This is a schematic diagram of the transverse optical path of Embodiment 2 of the present invention;

[0027] Figure 5 This is a schematic diagram of the longitudinal light path of Embodiment 2 of the present invention;

[0028] Figure 6 This is a schematic diagram of the longitudinal light path of Example 3 of the present invention;

[0029] Figure 7 This is a schematic diagram of the transverse optical path of Embodiment 3 of the present invention;

[0030] Figure 8This is a schematic diagram of the horizontal light path of Example 4 of the present invention;

[0031] Fig. 9 This is a schematic diagram of the horizontal light path of Example 4 of the present invention;

[0032] Fig.10 This is a schematic diagram of the horizontal light path of Example 5 of the present invention;

[0033] Fig.11 This is a three-dimensional schematic diagram of Embodiment 6 of the present invention;

[0034] Fig.12 This is a schematic diagram of the main longitudinal optical path of Example 6 of the present invention;

[0035] Fig.13 Schematic diagram of the main light path after being reflected by the first longitudinal lens in Example 6 of the present invention;

[0036] Fig.14 This is a schematic diagram of the approximate optical path after the scattering region and the third region reflector are longitudinally arranged in Example 6 of the present invention;

[0037] Fig.15 This is a schematic diagram of the longitudinally optimized optical path of Example 6 of the present invention;

[0038] Fig.16 Schematic diagram of the light spot formed by the present invention.

[0039] In the figure: 1, reflector; 2, first lens; 3, second lens; 4, light source; 7, reflection area; 8, scattering area; 9, third area reflector; 10, rotating shaft; 11, worm; 12, turbine; 23, central optical axis; 24, starting point. DETAILED DESCRIPTION

[0040] As required, detailed embodiments of the present invention are disclosed herein, but it should be understood that the disclosed embodiments are only exemplary of the present invention, and the present invention can be implemented in different and alternative forms. The accompanying drawings are not drawn to scale. In order to ensure the clarity of the optical path, the lens is originally designed to be smaller in the longitudinal dimension and therefore needs to be appropriately stretched. The focal length in the transverse direction is also drawn to the actual scale, mainly to make the optical path more obvious, the actual optical path is flatter, and the light spot is also flat. Therefore, the specific structural and functional details disclosed herein should not be understood as having a limiting meaning, but only as a representative basis to teach those skilled in the art to adopt the present invention differently. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] like Figure 1 , Figure 2 and Figure 3As shown, an ultra-narrow optical lens includes a reflector 1, a first lens 2, and a second lens 3. The reflector 1 is provided with a starting point 24. The first lens 2 and the second lens 3 are provided with the same central optical axis 23. The first lens 2 has at least a first focus and a second focus. The first focus and the second focus are positions where parallel light rays on a cross section passing through the central optical axis 23 are focused. The first focus of the first lens 2 is at the starting point 24 of the reflector 1, and the second focus is at infinity. The second lens 3 has a fourth focus and a third focus. The fourth focus and the third focus are also positions where parallel light rays on a cross section passing through the central optical axis 23 are focused. The third focus of the second lens 3 is at infinity, and the fourth focus is at the starting point 24 of the reflector 1. The first lens 2 can collect the light reflected by the reflector 1 to infinity in the longitudinal direction, and in the transverse direction. The reflected light can be gathered to the position where the first focus is relative to the first principal plane mirror image position of the first lens 2 or nearby, that is, within the range of one-fifth of the focal length. The smaller the light source 4 is, the larger the reflector 1 is, and the easier it is for the light to be gathered together. Theoretically, the first lens 2 needs to cover the opening of the reflector 1. The second lens 3 is arranged on one side of the first lens 2. The second lens 3 can gather the light passing through the first lens 2 to the position where the fourth focus is relative to the second principal plane mirror image position of the second lens 3 or nearby, that is, within the range of one-fifth of the focal length in the longitudinal direction, and can gather the light to infinity in the transverse direction. When observing along the cross section where the central optical axis 23 is located, the light passing through the first lens 2 and the second lens 3 forms multiple groups of converged light in the transverse and longitudinal directions. The transverse direction is defined as the horizontal direction and the longitudinal direction is defined as the vertical direction. The focal lengths of the multiple groups of converged light are different, such as Figure 2 and Figure 3 As shown, for parallel light, the focal length of the converged light in the vertical direction is the largest, and the focal length in the horizontal direction is the smallest. The focal lengths of the light rays in different directions of non-parallel light are also different, mainly parallel light and nearly parallel light. Since the light source 4 has a certain volume, part of the light reflected by the light source 4 through the reflector 1 is non-parallel, but the light source 4 is small in volume, and the optical path is close to parallel light within a certain distance range, so it has a similar technical effect. The central light is projected toward the center, so that the maximum light intensity at the center of the light spot reaches the maximum, and the edge light is focused and projected to both sides, extending the light intensity in the width direction, which can be used to irradiate zone III and meet regulatory standards. The light can be emitted in a straight line on the central optical axis 23 without refraction.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the first lens 2 and the second lens 3 are both provided with a plane side and a curved side, and the plane side is closer to the light source 4 than the curved side. The plane side is a flat surface, and the curved side is a curved surface.

[0044] like Figure 1 , Figure 2 and Figure 3As shown, the first lens 2 has a first focal line and the second lens 3 has a second focal line, the first focal line of the first lens 2 is located in the longitudinal direction, the second focal line of the second lens 3 is located in the transverse direction, and the distance between the first focal line and the first principal plane of the first lens 2 is smaller than the distance between the second focal line and the second principal plane of the second lens 3.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, the distance between the second focal line and the second principal plane of the second lens 3 is greater than twice the distance between the first focal line and the first principal plane of the first lens 2, and the first lens 2 is located between the second lens 3 and the reflector 1. From the production efficiency point of view, it takes 8-10 minutes to produce a lens with a thickness of 15 mm, while it only takes 1 minute to produce a lens with a thickness of 3 mm, which greatly improves the production efficiency and saves materials. The thickness of the second lens 3 and the first lens 2 in the embodiment is less than 3 mm, which greatly improves the production efficiency and reduces the production cost compared with the lens with a thickness of 15 mm in the prior art.

[0046] Embodiment 2:

[0047] like Figure 1 , Figure 4 and Figure 5 As shown, an ultra-narrow optical lens comprises a reflector 1, a first lens 2 and a second lens 3, the reflector 1 has a reflection focus so that when the light source 4 is set at the reflection focus of the reflector 1, the light of the light source 4 is reflected by the reflector 1 to form parallel light, the first lens 2 and the second lens 3 are provided with the same central optical axis 23, the first lens 2 has a focus in at least one section parallel to the central optical axis 23, the first lens 2 is located between the second lens 3 and the reflector 1, the second lens 3 has a focus in at least one section parallel to the central optical axis 23, the section where the minimum focal length focus of the first lens 2 is located is not parallel to the section where the minimum focal length focus of the second lens 3 is located, and the focus point where the parallel light is focused together on the transverse section of the lens group formed by the combination of the first lens 2 and the second lens 3 is the smallest distance from the light source 4, and the focus point where the parallel light is focused together on the longitudinal section of the lens group formed by the combination of the first lens 2 and the second lens 3 is the largest distance from the light source 4, and the parallel light is focused by the first lens 2 and the second lens 3 to form a light spot with a transverse width greater than a longitudinal height. The reflector 1 can be a spherical surface or a surface generated by other quadratic curves that can focus parallel light, such as a surface formed by the rotation of a parabola. This design can make the lens narrower and have a better light spot effect.

[0048] like Figure 1 , Figure 4 and Figure 5As shown, the reflector 1 is provided with a starting point 24 and the starting point 24 is located at the central optical axis 23 of the first lens 2 and the second lens 3. The horizontal and vertical focusing points of the lens group are located at the starting point 24 of the reflector 1 or near the starting point 24. The intensity of the reflected light near the starting point 24 of the reflector 1 is the highest. Since the light source 4 has a certain volume, in fact, the light reflected by the reflector 1 from the light source 4 cannot all be parallel light. For this part of non-parallel light, if it is very close to the first lens 2 and the second lens 3, it will be scattered and the light density is very small. If it is emitted near the focusing point, the formed light will be gathered in a smaller area, so that the light density will be much higher. The reflector 1 is located on the upper side of the central optical axis 23 of the first lens 2 and the second lens 3. The parallel light reflected by the reflector 1 is refracted by the first lens 2 and the second lens 3 to form a light spot located below the central optical axis 23, so that a cut-off line is formed, and no additional light baffle is required.

[0049] like Figure 4 and Figure 5 As shown, the light irradiation direction is defined as forward irradiation, that is, the reflector 1 is located at the rear, the light source 4 is located in front of the reflector 1, the first lens 2 and the second lens 3 are located in front of the light source 4, the second lens 3 is located in front of the first lens 2, the first lens 2 and the second lens 3 are both cylindrical lenses, the first lens 2 has a first focal line on the rear side and the second lens 3 has a second focal line on the rear side, and the first focal line and the second focal line both pass through the starting point 24 of the reflector 1 or near the starting point 24.

[0050] like Figure 4 and Figure 5 As shown, the first lens 2 and the second lens 3 are both provided with a plane side and a curved side, and the plane side is closer to the light source 4 than the curved side.

[0051] like Figure 4 and Figure 5 As shown, the distance between the first focal line and the first principal plane of the first lens 2 is smaller than the distance between the second focal line and the second principal plane of the second lens 3 .

[0052] Embodiment 3:

[0053] like Figure 6 and Figure 7 As shown, this embodiment is equivalent to inserting the second lens 3 in Example 1 between the first lens 2 and the reflector 1. Due to the change in position, this embodiment makes the non-parallel light more concentrated in the horizontal direction, but slightly disperses the light in the vertical direction, has a smaller impact on the parallel light, and has a greater impact on the divergent light and the concentrated light. The figure only provides a schematic position of the parallel light path. The first lens 2 or the second lens 3 can adopt a cylindrical lens with the same focal length as in Example 1, and can form the same or similar optical path as in Example 1 to achieve a similar technical effect.

[0054] Embodiment 4:

[0055] like Figure 8 and Fig. 9 As shown, the light reflected by the reflector 1 is non-parallel light, where Figure 8 The light rays are reflected and diverged in the horizontal direction. Fig. 9 The light rays that are reflected in the horizontal direction are converged, and the same multiple groups of converged light rays as those in the first embodiment can be used through the first lens 2 and the second lens 3 to form the same or similar optical paths as those in the first embodiment, thereby achieving similar technical effects.

[0056] Embodiment 5:

[0057] like Figure 1 and Fig.10 As shown, the first lens 2 or the second lens 3 is an aspherical lens, the focal length of the first lens 2 in the longitudinal section is much greater than the focal length of the transverse section, and the focal length of the second lens 3 in the longitudinal section is much smaller than the focal length of the transverse section, so that the longitudinal direction mainly relies on the second lens 3 to form the focused light, and the transverse direction mainly relies on the first lens 2 to form the focused light. This implementation has a high processing cost, but can form the same or similar optical path as in Example 1, achieve a similar technical effect, that is, improve the effect of yellowing of the light spot, and can be regarded as an equivalent design.

[0058] Embodiment 6:

[0059] like Fig.11 , Fig.12 and Fig.13 As shown, the first focal line of the first lens 2 is perpendicular to the second focal line of the second lens 3, and the first principal plane of the first lens 2 forms a certain angle with the second principal plane of the second lens 3. The first principal plane of the first lens 2 is inclined at a certain angle relative to the horizontal plane, and the reflector 1 is provided with an end face inclined downward at the same angle as the first lens 2. In this way, the light reflected by the first lens 2 will be reflected again by the reflector 1. At this time, the reflector 1 will focus the parallel light together, and the reflector 1 is inclined downward, so most of the light is also inclined downward. If the second lens 3 is set close to the first lens 2, this part of the light will pass through the lens and diverge downward, which can increase the brightness near the headlights. Fig.13 This is a schematic diagram of the light reflected by the second time. It can be seen that the light is emitted at a roughly downward angle.

[0060] like Fig.14 and Fig.15As shown, in an ideal state, the reflector 1 will have total reflection, but in actual conditions there will also be scattering. For driving at a faster speed, the close-range lights basically have little effect, so it is necessary to increase the density of medium and long-range lights. Because of the angle problem, the total reflection will tilt downward. Therefore, the reflector 1 can be provided with a reflection area 7 and a scattering area 8. The reflection area 7 is closer to the starting point 24 of the reflector 1 than the scattering area 8. The scattering area 8 is arranged at the position where a large amount of reflected light is irradiated by the first lens 2. These light rays are difficult to be fully utilized due to direct reflection due to the angle problem. In this way, a large amount of parallel light can be generated in the scattering area 8 and incident on the first lens 2 and the second lens 3. Fig.15 As shown in the figure, the light density at medium distance is increased, and the yellowing tendency of light is improved. For light at other angles, such as Fig.14 As shown, the light from the scattering area 8 can be reflected multiple times to a more ideal long-range position or directly illuminate a closer position, thereby making full use of the light from the light source 4. Fig.14 As shown, a third zone reflector 9 is provided below the first lens 2 and behind the second lens 3, so that the light at a large angle can be fully utilized to illuminate zone III, which complies with regulatory standards.

[0061] like Fig.16 As shown, a headlight comprises the above-mentioned ultra-narrow optical lens and a light source 4, wherein the light source 4 is located at the focal position of the reflector 1. The light spot formed by the headlight is flat in shape, the light density in the center area is high and can irradiate farther, and the light on both sides is more divergent and can irradiate a wider range.

[0062] like Fig.11 As shown, the headlight includes a transversely arranged rotating shaft 10, and the first lens 2 is mounted on the rotating shaft 10 so that the first lens 2 can rotate relative to the reflector 1. The rotating shaft 10 is provided with a turbine 12, and the turbine 12 matches the worm 11. The focal length of the headlight can be adjusted by manually rotating the worm 11. When there are many bends, the focal length can be reduced, that is, the angle between the first lens 2 and the horizontal plane can be reduced. Preferably, the worm 11 is driven by a motor to realize automatic rotation, and position sensors can be set at different positions. Different position adjustments can be realized through button switches and control circuits, and the switch can also be manually controlled to adjust to any position to meet the needs of different special and complex road conditions.

Claims

1. An ultra-narrow optical lens, comprising a reflector (1), a first lens (2) and a second lens (3), wherein the reflector (1) is provided with a starting point (24), the second lens (3) has a central optical axis (23), the starting point (24) is located at the central optical axis (23) of the second lens (3), and characterized in that: The first principal plane of the first lens (2) is inclined at a certain angle relative to the horizontal plane, and the reflector (1) is provided with an end surface inclined downward; The reflector (1) is provided with a reflective area (7) and a scattering area (8), and the reflective area (7) is closer to a starting point (24) of the reflector (1) than the scattering area (8); The first lens (2) has at least a first focus and a second focus, the first focus is at the starting point (24), and the second focus is at infinity relative to the starting point (24); The second lens (3) has at least a third focus and a fourth focus, the third focus is at infinity relative to the starting point (24), and the fourth focus is at the starting point (24); When observed along the direction of the central optical axis (23), the light passing through the first lens (2) and the second lens (3) forms multiple groups of converging light in the horizontal and vertical directions.

2. The ultra-narrow optical lens according to claim 1, characterized in that: The first lens (2) is capable of converging the light reflected by the reflector (1) to infinity in the longitudinal direction, and is capable of converging the reflected light to the first focus in the transverse direction; The second lens (3) is arranged on one side of the first lens (2); the second lens (3) is capable of converging the light passing through the first lens (2) to the fourth focus in the longitudinal direction, and is capable of converging the light to infinity in the transverse direction.

3. The ultra-narrow optical lens according to claim 2, characterized in that: The first lens (2) has a first focal line and the second lens (3) has a second focal line, the first focal line of the first lens (2) is located in the longitudinal direction, the second focal line of the second lens (3) is located in the transverse direction, and the distance between the first focal line and a first principal plane of the first lens (2) is smaller than the distance between the second focal line and a second principal plane of the second lens (3).

4. The ultra-narrow optical lens according to claim 3, characterized in that: The first focal line is perpendicular to the second focal line, and the first principal plane of the first lens (2) forms a certain angle with the second principal plane of the second lens (3).

5. The ultra-narrow optical lens according to claim 4, characterized in that: A third zone reflector (9) is provided below the first lens (2) and behind the second lens (3).

6. The ultra-narrow optical lens according to claim 5, characterized in that: The first lens (2) and the second lens (3) are both provided with a plane side and a curved side, the plane side being closer to the light source (4) than the curved side.

7. The ultra-narrow optical lens according to claim 3, characterized in that: The distance between the second focal line and the second principal plane of the second lens (3) is greater than twice the distance between the first focal line and the first principal plane of the first lens (2).

8. A vehicle lamp, characterized in that: The vehicle lamp comprises any one of the ultra-narrow optical lenses and a light source (4) as claimed in claims 4 to 5, wherein the light source (4) is located at a focal position of the reflector (1), the vehicle lamp comprises a transversely arranged rotation axis (10), and the first lens (2) is mounted on the rotation axis (10) so that the first lens (2) can rotate relative to the reflector (1).

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