Projection assembly, projection equipment and vehicle lamp

Abstract

The utility model provides a projection assembly, projection equipment and a vehicle lamp, and relates to the field of display. The projection assembly comprises a light source, a lens and an adjusting structure. The light-emitting side of the light source faces the lens; the adjusting structure comprises at least one adjusting part which can move relative to the light source; when the adjusting structure is in the first state, the adjusting part is not located on a connecting line of the light source and the lens; when the adjusting structure is in the second state, at least one adjusting part is located on the connecting line of the light source and the lens, and light from the light source penetrates through the adjusting part. The projection assembly can be suitable for projection surfaces of different distances, images of the projection assembly are clearer, and the imaging effect of the projection assembly is improved.

Description

Technical Field

[0001] This application relates to the field of displays, and more particularly to projection components, projection devices, and vehicle lights. Background Technology

[0002] With the development of display technology, the application fields of projection display technology are becoming increasingly widespread. A projection component typically includes a light source and a lens. The light source emits light towards the lens, causing the light to be deflected by the lens and form a clear image on a projection surface at a certain distance. However, because the distance between the projection surface and the lens may change, the image formed on the projection surface where the projection component is located may be unclear, affecting the imaging effect of the projection component. Utility Model Content

[0003] This application provides a projection component, a projection device, and a vehicle light to solve the problem that the image formed on the projection surface where the projection component is located is unclear, which affects the imaging effect of the projection component.

[0004] The projection assembly provided in this application includes a light source, a lens, and an adjustment structure;

[0005] The light-emitting side of the light source faces the lens;

[0006] The adjustment structure includes at least one adjustment part, which is movable relative to the light source;

[0007] When the adjustment structure is in the first state, the adjustment part is not on the line connecting the light source and the lens; when the adjustment structure is in the second state, at least one of the adjustment parts is on the line connecting the light source and the lens, and light from the light source passes through the adjustment part.

[0008] By adopting the above technical solution, an adjustment structure is set on the line connecting the light source and the lens, and the adjustment part of the adjustment structure can move relative to the light source. When the distance between the lens and the projection surface is relatively close, in the first state, the adjustment part is not on the line connecting the light source and the lens. The light from the light source is deflected by the lens and then shines on the projection surface that is relatively close, thereby realizing close-range projection imaging.

[0009] When the distance between the lens and the projection surface is far, in the second state, the adjustment part can move to the line connecting the light source and the lens, so that at least one adjustment part can be on the line connecting the light source and the lens. The light from the light source passes through the adjustment part, so that the light can pass through the adjustment part to illuminate the projection surface at a distance, thereby realizing long-distance imaging.

[0010] Compared to projection components of related technologies, this projection component can be adapted to projection surfaces at different distances. When the distance between the projection surface and the lens changes, the state of the adjustment structure can be changed so that the adjustment part can be moved to or away from the line connecting the light source and the lens. This allows the projection component to be adapted to projection surfaces at different distances, making the image of the projection component clearer and improving the imaging effect of the projection component.

[0011] This application also provides a projection device, including the projection component described in any of the above embodiments.

[0012] The projection device provided in this application includes any of the above-mentioned projection components, and therefore also has the advantages of any of the above-mentioned projection components. This application will not elaborate further on these advantages.

[0013] This application also provides a vehicle light that includes the projection device described in any of the above embodiments.

[0014] The vehicle headlight provided in this application embodiment includes any of the above-mentioned projection devices. Therefore, the projection vehicle headlight also has the advantages of any of the above-mentioned projection devices, which will not be elaborated further in this application embodiment. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0016] Figure 1 A schematic diagram of the projection component when the adjustment structure provided in the embodiments of this application is in the first state;

[0017] Figure 2 A schematic diagram of the projection component when the adjustment structure provided in the embodiments of this application is in the second state;

[0018] Figure 3 A schematic diagram of the projection assembly when the plurality of adjustment parts provided in the embodiments of this application include a first adjustment part;

[0019] Figure 4 A schematic diagram of the projection assembly when the plurality of adjustment parts provided in the embodiments of this application include a second adjustment part;

[0020] Figure 5 A schematic diagram of the projection assembly when the plurality of adjustment parts provided in the embodiments of this application include a third adjustment part;

[0021] Figure 6 A schematic diagram of the structure of the projection assembly with a receiving cavity in the adjustment section provided in the embodiments of this application;

[0022] Figure 7 A schematic diagram of the structure of a projection assembly including multiple first adjustment sections is provided for an embodiment of this application;

[0023] Figure 8 A schematic diagram of the structure of a projection assembly including multiple second adjustment sections is provided for an embodiment of this application;

[0024] Figure 9 A schematic diagram of a projection assembly including multiple second adjustment sections, provided as an embodiment of this application;

[0025] Figure 10 A schematic diagram of a projection assembly including multiple second adjustment sections, provided as an embodiment of this application;

[0026] Figure 11 A schematic diagram of the structure of a projection assembly including multiple second adjustment sections, provided for an embodiment of this application;

[0027] Figure 12 A schematic diagram of the structure of a projection assembly including multiple second adjustment parts rotatable about a rotation axis, provided for an embodiment of this application;

[0028] Figure 13 This is a schematic diagram of a structure provided in an embodiment of the present application to display the light-receiving angle;

[0029] Figure 14 This is a schematic diagram of the projection component according to Embodiment 1 of this application;

[0030] Figure 15 This is a schematic diagram of the projection component according to Embodiment 2 of this application;

[0031] Figure 16 This is a schematic diagram of the projection component according to Embodiment 3 of this application;

[0032] Figure 17 This is a schematic diagram of the projection component according to Embodiment 4 of this application;

[0033] Figure 18 This is a schematic diagram of the projection component according to Embodiment 5 of this application;

[0034] Figure 19 This is a schematic diagram of the projection component according to Embodiment Six of this application;

[0035] Figure 20 This is a schematic diagram of the projection component according to Embodiment Seven of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Base;

[0038] 100. Light source;

[0039] 110. Radiator; 111. Main body; 112. Heat dissipation fins;

[0040] 200. Lens;

[0041] 300. Adjust the structure;

[0042] 310, Adjustment section; 310a, First adjustment section; 310b, Second adjustment section; 310c, Third adjustment section; 311, Receiving cavity; 312, Opening; 320, Rotating shaft;

[0043] 400. Projection surface.

[0044] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0045] As described in the background section, projection components typically include a light source and a lens. The light source emits light towards the lens, causing the light to be deflected by the lens and projected onto a projection surface at a certain distance to form a clear image. However, because the distance between the projection surface and the lens may change, the image formed on the projection surface where the projection component is located may be unclear, affecting the imaging effect of the projection component.

[0046] With the continuous development of projection technology, projection components are being used more and more widely in the automotive field. For example, car headlights can also be used as projection components. When a car is in motion, the headlights can provide illumination at a distance (e.g., 10-25 meters) to enhance driving safety. Furthermore, the headlights can switch to a welcome mode, projecting a welcome image at a close distance (e.g., 3-5 meters).

[0047] It is easy to understand that, due to different application scenarios of automobiles, the distance between the projection surface and the lens of the headlight may change. Furthermore, due to limitations such as focal length, common headlights usually cannot simultaneously perform long-distance lighting and close-range welcome projection functions. The image formed by the headlight on some projection surfaces may be unclear, thus affecting the imaging effect of the projection component.

[0048] Currently, increasing the number of optical lenses can improve the clarity of the headlights' image, thus compensating for the poor imaging performance in different application scenarios. However, this also increases the overall cost of the projection assembly, requires higher assembly precision, and is more difficult to assemble. Furthermore, it increases the weight and size of the projection assembly, further reducing its assembly space and flexibility.

[0049] Furthermore, since the light source of the car headlights is formed by splicing multiple light-emitting elements, there are gaps between the multiple light-emitting elements. When the number of optical lenses is increased, although the image clarity of the projection surface is improved, the gaps between the light-emitting elements are also enlarged, which may cause obvious dark areas to appear in the image formed by the projection surface.

[0050] When the light-emitting element fails, dark spots will appear in the image projected onto the surface. It's easy to understand that increasing the number of optical lenses will also amplify these dark spots, resulting in a projected image that is initially sharp but contains numerous dark spots and areas due to the light source, ultimately leading to poor image quality.

[0051] To address the aforementioned technical problems, this application provides a projection component and projection device. An adjustment structure is provided on the line connecting the light source and the lens, and the adjustment part of the adjustment structure can move relative to the light source. When the distance between the lens and the projection surface is relatively close, in the first state, the adjustment part is not on the line connecting the light source and the lens. Light from the light source is deflected by the lens and then illuminates the nearby projection surface, thereby achieving close-range projection imaging.

[0052] When the distance between the lens and the projection surface is far, in the second state, the adjustment part can move to the line connecting the light source and the lens, so that at least one adjustment part can be on the line connecting the light source and the lens. The light from the light source passes through the adjustment part, so that the light can pass through the adjustment part to illuminate the projection surface at a distance, thereby realizing long-distance imaging.

[0053] Compared to projection components of related technologies, this projection component can be adapted to projection surfaces at different distances. When the distance between the projection surface and the lens changes, the state of the adjustment structure can be changed so that the adjustment part can be moved to or away from the line connecting the light source and the lens. This allows the projection component to be adapted to projection surfaces at different distances, making the image of the projection component clearer and improving the imaging effect of the projection component.

[0054] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0055] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0056] Reference Figure 1 -and Figure 2 This application provides a projection component, including a light source 100 and a lens 200. The light-emitting side of the light source 100 can face the lens 200 so that light from the light source 100 can pass through the lens 200 and form an image on the projection surface 400, thereby realizing the imaging process of the projection component.

[0057] The projection assembly also includes an adjustment structure 300. The adjustment structure 300 may include at least one adjustment part 310, which is movable relative to the light source 100 so that the adjustment part 310 can be moved to or away from the line connecting the light source 100 and the lens 200.

[0058] When the adjustment structure 300 is in the first state, the adjustment part 310 is not on the line connecting the light source 100 and the lens 200, and light from the light source 100 will not pass through the adjustment part 310; the propagation medium between the light source 100 and the lens 200 is always air. When the adjustment structure 300 is in the second state, at least one adjustment part 310 is on the line connecting the light source 100 and the lens 200, and light from the light source 100 passes through the adjustment part 310 and propagates to the lens 200.

[0059] The following description uses a vehicle headlight as an example to illustrate the application process of a projection component.

[0060] By providing an adjustment structure 300 between the light source 100 and the lens 200, the adjustment section 310 of the adjustment structure 300 can move relative to the light source 100. When the distance between the lens 200 and the projection surface 400 is relatively close, for example, when the projection assembly is used for a car's welcome function, the adjustment structure 300 can be in its first state, in which case the adjustment section 310 is not on the line connecting the light source 100 and the lens 200. The light from the light source 100 is deflected by the lens 200 and then illuminates the relatively close projection surface 400, thereby achieving close-range projection imaging to realize the welcome function through the projection assembly.

[0061] When the distance between the lens 200 and the projection surface 400 is relatively far, for example, when the projection assembly is used for the lighting function of a car, the adjustment structure 300 can be in the second state. The adjustment part 310 can be moved between the light source 100 and the lens 200, so that at least one adjustment part 310 can be on the line connecting the light source 100 and the lens 200. Light from the light source 100 passes through the adjustment part 310, so that the light can pass through the adjustment part 310 to illuminate the distant projection surface 400, thereby realizing long-distance imaging to achieve the lighting function through the projection assembly.

[0062] In some possible implementations, the light source 100 may be configured as one of a light-emitting diode (LED), an organic light-emitting diode (OLED), or a liquid crystal display (LCD).

[0063] The light source 100 may include multiple light-emitting elements, which may be arranged in multiple rows and columns. The multiple light-emitting elements may include several first light-emitting elements, several second light-emitting elements, and several third light-emitting elements. The first light-emitting elements may be used to emit red light, the second light-emitting elements may be used to emit green light, and the third light-emitting elements may be used to emit blue light.

[0064] Several first light-emitting elements, several second light-emitting elements, and several third light-emitting elements can form several pixel units. Each pixel unit includes a first light-emitting element, a second light-emitting element, and a third light-emitting element, so as to collect the light from the first light-emitting element, the second light-emitting element, and the third light-emitting element through the pixel unit to form light beams of different colors.

[0065] In some possible implementations, the projection assembly may also include a heat sink 110. The heat sink 110 is located close to the light source 100 and can at least be used to accelerate the heat dissipation of the light source 100, thereby reducing the possibility of the light source 100 overheating.

[0066] For example, the heat sink 110 may include a body 111. The body 111 may be attached to the backlight side of the light source 100, or the body 111 may be spaced apart from the backlight side of the light source 100 and close to the light source 100, so that the heat of the light source 100 can be transferred to the body 111, thereby accelerating the heat dissipation of the light source 100.

[0067] The heat sink 110 may include multiple heat dissipation fins 112. The multiple heat dissipation fins 112 may be disposed on the side of the main body 111 away from the light source 100, thereby increasing the contact area between the heat sink 110 and the air by distributing multiple heat dissipation fins 112 on the main body 111, further accelerating the heat dissipation speed of the heat sink 110, reducing the temperature of the heat sink 110, and improving the heat dissipation effect of the heat sink 110 on the light source 100.

[0068] In some possible implementations, the adjustment structure 300 may be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can propagate through the adjustment structure 300 to the lens 200.

[0069] Reference Figure 1 , Figure 2 and Figure 3 For example, the number of adjustment sections 310 can be set to multiple, and the multiple adjustment sections 310 may include several first adjustment sections 310a. Among the multiple first adjustment sections 310a, at least two first adjustment sections 310a have different refractive indices, so that first adjustment sections 310a with different refractive indices can be replaced, so that the projection assembly can be used to form images on the projection surface 400 at different distances.

[0070] It is easy to understand that when light from the light source 100 is deflected by the adjustment section 310 with different refractive indices (with the same thickness and other conditions), the optimal imaging distance of the light passing through the lens 200 changes. This allows the projection assembly to improve the image clarity on the projection surface 400 by changing the refractive index of the adjustment section 310 on the line connecting the light source 100 and the lens 200 when it is applicable to projection surfaces 400 at different distances.

[0071] For example, when the adjustment structure 300 is in the second state, the number of the first adjustment parts 310a on the line connecting the light source 100 and the lens 200 is adjustable, so that by changing the number of the first adjustment parts 310a, the projection assembly can be adapted to form images on the projection surface 400 at different distances.

[0072] For example, the number of first adjustment parts 310a on the line connecting the light source 100 and the lens 200 can be set to one. The refractive indices of the first adjustment parts 310a are all different. When the adjustment structure 300 is in the second state, the optimal imaging distance of the projection component can be changed by replacing the first adjustment parts 310a with different refractive indices.

[0073] Alternatively, the number of first adjustment sections 310a on the line connecting the light source 100 and the lens 200 can be set to multiple, and the refractive index of some of the first adjustment sections 310a can be the same, so as to change the optimal imaging distance of the projection component by changing the number and refractive index of the first adjustment sections 310a.

[0074] When the adjustment structure 300 is in the second state, each of the first adjustment parts 310a can be located on the line connecting the light source 100 and the lens 200, so that each of the first adjustment parts 310a can be moved to the light source 100 and the lens 200, thereby changing the optimal imaging distance of the projection assembly by replacing the first adjustment parts 310a with different refractive indices.

[0075] In some possible implementations, the number of adjustment units 310 can be set to multiple. (See reference...) Figure 1 , Figure 2 and Figure 4 The plurality of adjustment sections 310 include several second adjustment sections 310b. Among the plurality of second adjustment sections 310b, at least two second adjustment sections 310b have different thicknesses, thereby allowing the second adjustment sections 310b of different thicknesses to be replaced, so that the projection assembly can be adapted to form images on the projection surface 400 at different distances.

[0076] It is easy to understand that when light from the light source 100 is deflected by adjustment parts 310 of different thicknesses (with the same refractive index and other conditions), the optimal imaging distance of the light passing through the lens 200 changes. This allows the projection assembly to improve the image clarity on the projection surface 400 by changing the thickness of the adjustment part 310 on the line connecting the light source 100 and the lens 200 when it is applicable to projection surfaces 400 at different distances.

[0077] For example, when the adjustment structure 300 is in the second state, the number of the second adjustment parts 310b on the line connecting the light source 100 and the lens 200 can be adjusted, so that by changing the number of the second adjustment parts 310b, the projection assembly can be adapted to form images on the projection surface 400 at different distances.

[0078] For example, the number of second adjustment parts 310b on the line connecting the light source 100 and the lens 200 can be set to one. The thickness of the second adjustment parts 310b is different. When the adjustment structure 300 is in the second state, the optimal imaging distance of the projection component can be changed by replacing the second adjustment parts 310b with different thicknesses.

[0079] Alternatively, the number of second adjustment sections 310b on the line connecting the light source 100 and the lens 200 can be set to multiple, and the thickness of some of the second adjustment sections 310b can be the same, so as to change the optimal imaging distance of the projection assembly by changing the number and thickness of the second adjustment sections 310b.

[0080] When the adjustment structure 300 is in the second state, each of the second adjustment parts 310b can be moved to the line connecting the light source 100 and the lens 200, thereby changing the optimal imaging distance of the projection assembly by replacing the second adjustment parts 310b of different thicknesses.

[0081] The arrangement of the multiple second adjustment units 310b can be as follows: Figure 8 The thickness of the multiple second adjustment sections 310b is configured to increase or decrease sequentially from top to bottom.

[0082] Alternatively, the arrangement of the multiple second adjustment units 310b can be as follows: Figure 9 The thickness of the multiple second adjustment sections 310b is configured to increase first and then decrease from top to bottom.

[0083] Alternatively, the arrangement of the multiple second adjustment units 310b can be as follows: Figure 10 The thickness of the multiple second adjustment sections 310b is configured to decrease first and then increase from top to bottom.

[0084] Reference Figure 1 , Figure 2 and Figure 5 In some possible implementations, the number of adjustment sections 310 is set to multiple, and the multiple adjustment sections 310 include several third adjustment sections 310c. The third adjustment sections 310c have the same refractive index and the same thickness. When the adjustment structure 300 is in the second state, the number of third adjustment sections 310c on the line connecting the light source 100 and the lens 200 can be adjusted to change the optimal imaging distance of the projection assembly.

[0085] Alternatively, the multiple adjustment sections 310 may include several third adjustment sections 310c. The third adjustment sections 310c have the same refractive index but different thicknesses. When the adjustment structure 300 is in the second state, the number of third adjustment sections 310c located on the line connecting the light source 100 and the lens 200 can be adjusted to change the optimal imaging distance of the projection assembly.

[0086] Alternatively, the multiple adjustment sections 310 may include several third adjustment sections 310c. The third adjustment sections 310c have different refractive indices but the same thickness. When the adjustment structure 300 is in the second state, the number of third adjustment sections 310c located on the line connecting the light source 100 and the lens 200 can be adjusted to change the optimal imaging distance of the projection assembly.

[0087] It should be noted that when the number of adjustment units 310 is set to multiple, the multiple adjustment units 310 may include at least one of the first adjustment unit 310a, the second adjustment unit 310b and the third adjustment unit 310c.

[0088] For example, the plurality of adjustment units 310 may include any one of the first adjustment unit 310a, the second adjustment unit 310b, and the third adjustment unit 310c. Alternatively, the plurality of adjustment units 310 may include any two of the first adjustment unit 310a, the second adjustment unit 310b, and the third adjustment unit 310c. Alternatively, the plurality of adjustment units 310 may include the first adjustment unit 310a, the second adjustment unit 310b, and the third adjustment unit 310c.

[0089] In some possible implementations, the adjustment part 310 may be an optical plate-like structure, or the adjustment part 310 may be configured as a structure of other shapes.

[0090] Reference Figure 1 , Figure 2 and Figure 6 For example, the adjustment unit 310 may be provided with a receiving cavity 311 for containing a refractive solution. It is easy to understand that the refractive index of the adjustment unit 310 can be changed by changing the type of refractive solution in the receiving cavity 311, thereby changing the optimal imaging distance of the projection assembly.

[0091] The adjustment unit 310 may be provided with an opening 312, which may communicate with the receiving cavity 311, so that a refractive solution can be filled into the receiving cavity 311 through the opening 312, or the refractive solution located in the receiving cavity 311 may be discharged through the opening 312, so that the refractive index of the adjustment unit 310 can be changed by filling the receiving cavity 311 with a refractive solution of different refractive index.

[0092] In some possible implementations, the adjustment part 310 can be made of glass to make its structure and performance more stable and suitable for more operating conditions. Alternatively, the adjustment part 310 can be made of plastic to reduce its weight and make the overall structure of the projection assembly lighter.

[0093] The refractive index of the adjustment unit 310 can be greater than or equal to 1 and less than or equal to 2. The refractive index of the adjustment unit 310 can be set to any one of 1, 1.2, 1.4, 1.6, 1.8 and 2, so as to adjust the light propagation between the light source 100 and the lens 200 by adjusting the adjustment unit 310 with different refractive indices.

[0094] For example, the thickness of the adjustment part 310 is greater than or equal to 0.3 mm and less than or equal to 1 mm. The thickness of the adjustment part 310 can be set to any thickness of 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm and 1 mm, so as to adjust the light propagation between the light source 100 and the lens 200 by adjusting the adjustment part 310 of different thicknesses.

[0095] Reference Figure 1 and Figure 2 ,as well as Figures 7-11 In some possible implementations, the light source 100 and the lens 200 can be arranged along a first direction (i.e., the x direction in the figure), and the light emitted from the light-emitting side of the light source 100 can be emitted towards the lens 200 along the first direction.

[0096] For example, the projection assembly may include a base 10. The base 10 may be used to mount a lens 200 and a light source 100 such that the distance between the lens 200 and the light source 100 in a first direction is relatively fixed.

[0097] The base 10 can also be used to connect the adjustment structure 300, so that the adjustment part 310 of the adjustment structure 300 can move relative to the base 10, thereby allowing different adjustment parts 310 to move through the base 10. The adjustment part 310 can move to the line connecting the lens 200 and the light source 100, or move away from the line connecting the lens 200 and the light source 100.

[0098] For example, the adjustment unit 310 can move along a second direction (i.e., the y-direction in the figure), which intersects with the first direction. The second direction can be perpendicular to the first direction, and the plane on which the adjustment unit 310 is located can be perpendicular to the first direction, so that light rays propagating along the first direction can enter the adjustment unit 310 perpendicularly.

[0099] For example, the adjustment part 310 can slide relative to the base 10 in a second direction, and the adjustment part 310 can pass through a first position and a second position. When the adjustment part 310 is in the first position, the adjustment part 310 may not be on the line connecting the light source 100 and the lens 200. When the adjustment part 310 is in the second position, the adjustment part 310 may be on the line connecting the light source 100 and the lens 200.

[0100] For example, the number of adjustment parts 310 is set to multiple, and the multiple adjustment parts 310 can be arranged along the second direction.

[0101] Among the plurality of adjustment portions 310 arranged along the second direction, the plurality of adjustment portions 310 may include at least one of a first adjustment portion 310a and a second adjustment portion 310b, so that by sliding the plurality of adjustment portions 310 relative to the base 10 along the second direction, different adjustment portions 310 can be moved to the line connecting the light source 100 and the lens 200.

[0102] For example, the multiple adjustment units 310 can be configured as multiple first adjustment units 310a, or the multiple adjustment units 310 can be configured as multiple second adjustment units 310b. Alternatively, some of the adjustment units 310 in the multiple adjustment units 310 can be configured as first adjustment units 310a, and the remaining adjustment units 310 in the multiple adjustment units 310 can be configured as second adjustment units 310b.

[0103] When the adjustment structure 300 is in the second state, each adjustment part 310 can be moved to the line connecting the light source 100 and the lens 200, or moved away from the line connecting the light source 100 and the lens 200, thereby ensuring that each adjustment part 310 can be used to deflect the light propagation process between the light source 100 and the lens 200.

[0104] Reference Figure 7 and Figure 8 With a plane parallel to the first and second directions as its cross-section, the cross-sectional shape of at least one adjusting part 310 can be set to rectangular. And / or, refer to... Figure 9 At least one adjusting part 310 may be configured with a trapezoidal cross-sectional shape.

[0105] For example, among the plurality of adjustment portions 310 arranged along the second direction, the adjustment portion 310 can be configured as a second adjustment portion 310b. The thickness of the second adjustment portion 310b is different along the second direction. The plurality of second adjustment portions 310b are arranged sequentially to form a row of adjustment portions, and the row of adjustment portions extends along the second direction.

[0106] With a plane parallel to the first and second directions as the cross-section, the cross-sectional shape of the second adjustment part 310b can be set to a rectangle, and the thickness of the second adjustment part 310b can gradually increase in the first direction.

[0107] Alternatively, taking a plane parallel to the first and second directions as a cross-section, the cross-sectional shape of the second adjustment part 310b can be set as trapezoidal, and the cross-sectional shape of the row of adjustment parts can be set as trapezoidal. In the first direction, the thickness of the second adjustment part 310b can gradually increase.

[0108] In the first direction, the first surface of the row of adjustment parts faces the light source 100, and the second surface of the row of adjustment parts faces the lens 200. The included angle between the first surface and the second surface of the row of adjustment parts can be greater than 0 degrees and less than or equal to 45 degrees. For example, the included angle between the first surface and the second surface of the row of adjustment parts can be set to any included angle among 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees and 45 degrees.

[0109] Using a plane parallel to the first and second directions as a cross-section, the cross-sectional shape of the adjustment structure 300 is set to one of the following: trapezoidal, bamboo shoot-shaped, fan-shaped, and fan-like.

[0110] Reference Figure 1 , Figure 2 and Figure 12 In some possible implementations, the light source 100 and the lens 200 are arranged along a first direction. The adjustment part 310 is movable about the rotation axis 320, which is parallel to and spaced apart from the line connecting the light source 100 and the lens 200. When the adjustment structure 300 is in the second state, at least one adjustment part 310 rotates to the line connecting the light source 100 and the lens 200.

[0111] The number of adjustment parts 310 is set to multiple, and the multiple adjustment parts 310 are arranged around the rotation axis 320. When the adjustment structure 300 is in the second state, each adjustment part 310 rotates sequentially to the line connecting the light source 100 and the lens 200.

[0112] Among the plurality of adjustment portions 310 arranged around the rotation axis 320, the plurality of adjustment portions 310 may include at least one of a first adjustment portion 310a and a second adjustment portion 310b, so that by rotating the plurality of adjustment portions 310 relative to the base 10 about the rotation axis 320, different adjustment portions 310 can be rotated to the line connecting the light source 100 and the lens 200.

[0113] For example, the multiple adjustment units 310 can be configured as multiple first adjustment units 310a, or the multiple adjustment units 310 can be configured as multiple second adjustment units 310b. Alternatively, some of the adjustment units 310 in the multiple adjustment units 310 can be configured as first adjustment units 310a, and the remaining adjustment units 310 in the multiple adjustment units 310 can be configured as second adjustment units 310b.

[0114] When the adjustment structure 300 is in the second state, each adjustment part 310 can be rotated to the line connecting the light source 100 and the lens 200, or moved away from the line connecting the light source 100 and the lens 200, thereby ensuring that each adjustment part 310 can be used to deflect the light propagation process between the light source 100 and the lens 200.

[0115] It is easy to understand that other methods can also be used to realize the movement process of multiple adjustment units 310, so as to make the adjustment process of multiple adjustment units 310 more convenient.

[0116] In some possible implementations, the projection components satisfy the following relationship:

[0117] 1m≤[f(nL'+d)] / [n(L'-f)+d]≤25m;

[0118] Where f is the focal length of lens 200; n is the refractive index of adjustment section 310 located on the line connecting light source 100 and lens 200; L' is the back focal length of projection assembly; and d is the thickness of adjustment section 310 located on the line connecting light source 100 and lens 200.

[0119] It is easy to understand that by adjusting the refractive index of the adjustment part 310 on the line connecting the light source 100 and the lens 200, as well as the thickness of the adjustment part 310 on the line connecting the light source 100 and the lens 200, the projection component can be made suitable for application scenarios with a minimum projection distance of 1 meter and a maximum projection distance of 25 meters. This allows the projection component to be used on projection surfaces 400 at different distances, making the image of the projection component clearer and improving the imaging effect of the projection component.

[0120] By adopting the above technical solution, by changing the state of the adjustment structure 300, the adjustment part 310 can be moved to the line connecting the light source 100 and the lens 200. The adjustment structure 300 changes from the first state to the second state, thereby utilizing the difference in refractive index between the adjustment part 310 and air as the propagation medium to adjust the optimal projection distance of the projection component, so that the projection component can be used for projection surfaces 400 at different distances.

[0121] When the adjustment structure 300 is in the second state, the refractive index of the adjustment part 310 on the line connecting the light source 100 and the lens 200, as well as the thickness of the adjustment part 310 on the line connecting the light source 100 and the lens 200, can be adjusted so that the projection component can be adapted to the projection surface 400 at different distances, making the image of the projection component clearer.

[0122] In some possible implementations, the adjustment structure 300 can be located on the side of the lens 200 away from the light source 100. Light from the light source 100 can be transmitted to the projection surface 400 through the lens 200 and the adjustment structure 300 in sequence, so that a clear image can be formed on the projection surface 400 by adjusting the adjustment structure 300.

[0123] This application provides a projection assembly, including a light source 100, a lens 200, and an adjustment structure 300. The adjustment structure 300 includes at least one adjustment section 310. The adjustment section 310 is disposed on the line connecting the light source 100 and the lens 200, and light from the light source 100 passes through the adjustment section 310. The adjustment section 310 is provided with a receiving cavity 311 for containing a refractive solution. It is readily understood that the refractive index of the adjustment section 310 can be changed by altering the type of refractive solution within the receiving cavity 311, thereby changing the optimal imaging distance of the projection assembly.

[0124] The adjustment unit 310 may be provided with an opening 312, which may communicate with the receiving cavity 311, so that a refractive solution can be filled into the receiving cavity 311 through the opening 312, or the refractive solution located in the receiving cavity 311 may be discharged through the opening 312, so that the refractive index of the adjustment unit 310 can be changed by filling the receiving cavity 311 with a refractive solution of different refractive index.

[0125] When the adjustment unit 310 is in the first state, the receiving cavity 311 may not be filled with a refractive solution. When the adjustment unit 310 is in the second state, the receiving cavity 311 may be filled with a replaceable refractive solution to make the refractive index adjustment process of the adjustment unit 310 more convenient.

[0126] In some possible implementations, at least a portion of the adjustment section 310 is provided with an antireflective film. The antireflective films at different locations of the adjustment section 310 may be identically provided. Alternatively, the antireflective films at different locations of the adjustment section 310 may be differently provided.

[0127] For example, the first part and the second part of the adjustment section 310 are provided with anti-reflection membranes; the transmittance of the anti-reflection membrane located in the first part of the adjustment section 310 is different from the transmittance of the anti-reflection membrane located in the second part of the adjustment section 310.

[0128] Alternatively, the adjustment unit 310 may include multiple adjustment regions provided with antireflective films, at least some of which have different antireflective film transmittance. For example, the number of adjustment regions may be two, or the number of adjustment regions may be at least three.

[0129] In multiple conditioning regions, the anti-reflection membrane permeability differs in at least two conditioning regions. In some conditioning regions, the anti-reflection membrane permeability may be the same.

[0130] By adopting the above technical solution, when the projection component tilts during projection, the illuminance at the near end of the projected image will be higher than that at the far end. Therefore, an anti-reflective film with higher transmittance can be coated on the surface of the adjustment unit 310 corresponding to the area at the far end of the projected image, while an anti-reflective film with lower transmittance can be coated on the surface of the flat plate corresponding to the area at the near end of the projected image. This can reduce the difference in illuminance between the near and far ends of the projected image and improve the uniformity of the projected image.

[0131] In some possible implementations, the projection components satisfy the following relationship:

[0132] 5m≤[f(nL'+d)] / [n(L'-f)+d]≤50m;

[0133] Where f is the focal length of lens 200; n is the refractive index of adjustment section 310 located on the line connecting light source 100 and lens 200; L' is the back focal length of projection assembly; and d is the thickness of adjustment section 310 located on the line connecting light source 100 and lens 200.

[0134] By adopting the above technical solution, the change of the back focal length L' is achieved by controlling the refractive index n and the thickness d of the adjustment part 310. After passing through the focal length f, according to the conjugate relationship, the projection distance of the projection component changes with L, realizing flexible switching of multiple projection distances.

[0135] In some possible implementations, the projection components satisfy the following relationship:

[0136] 0mm<2f 2 Fδ(nL'+d) 2 / {[nf(L'-f)+df] 2 -[δF(nL'+d)] 2 ≤1000mm;

[0137] Where f is the focal length of lens 200; n is the refractive index of adjustment section 310 located on the line connecting light source 100 and lens 200; L' is the back focal length of projection assembly; d is the thickness of adjustment section 310 located on the line connecting light source 100 and lens 200; F is the aperture number of lens 200; and δ is the limit value of human eye resolution.

[0138] By adopting the above technical solution, the depth of field (DOF) can be controlled by controlling the refractive index n and the thickness d of the adjustment unit 310, so that clear projection can be achieved within the theoretical optimal imaging range of 0 to 1000 mm before and after the imaging head.

[0139] In some possible implementations, the projection components satisfy the following relationship:

[0140] 0.15≤d / n≤0.8;

[0141] Wherein, n is the refractive index of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; d is the thickness of the adjustment section 310 located on the line connecting the light source 100 and the lens 200.

[0142] By adopting the above technical solution and controlling the ratio of the refractive index to the thickness of the adjustment part 310, the imaging of the projection component can be made clearer. When the ratio of the refractive index to the thickness of the adjustment part 310 is less than 0.15, the adjustment part 310 is too thin, and the complex driving environment of the vehicle headlights, with extreme bumps, high temperatures and high humidity, poses a risk of breakage. When the ratio of the refractive index to the thickness of the adjustment part 310 is greater than 0.8, the adjustment part 310 is too thick, and the radial movement of light is too large. In order to receive this part of the light, the aperture of the lens needs to be increased, which is not conducive to cost and miniaturization.

[0143] In some possible implementations, the projection components satisfy the following relationship:

[0144] 0°≤arctan{[H·n(L'-f)+d] / [f(nL'+d)]}≤20°;

[0145] Wherein, n is the refractive index of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; L' is the back focal length of the projection assembly; d is the thickness of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; and H is the mounting height of the lens.

[0146] By adopting the above technical solution, the projection distance can be changed by controlling the refractive index n and thickness d of the adjustment unit 310, so that the projection at different angles can achieve the best clarity at a specific height.

[0147] In some possible implementations, 150mm ≤ H ≤ 1500mm.

[0148] In some possible implementations, the projection components satisfy the following relationship:

[0149] 0°≤arctan{[H·n(L'-f)+d] / [f(nL'+d)]}≤10°;

[0150] Wherein, n is the refractive index of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; L' is the back focal length of the projection assembly; d is the thickness of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; and H is the mounting height of the lens.

[0151] By adopting the above technical solution, the projection distance can be changed by controlling the refractive index n and thickness d of the adjustment unit 310, so that the projection at different angles can achieve the best clarity at a specific height.

[0152] Reference Figure 13 In some possible implementations, the projection components satisfy the following relationship:

[0153] 1≤d / (D·n)≤1 / (2·tanθ);

[0154] Where n is the refractive index of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; d is the thickness of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; D is the diameter of the lens; and θ is the light-gathering angle of the lens.

[0155] By adopting the above technical solution, the back focal length is changed by controlling the refractive index n and thickness d of the adjustment unit 310. The larger the back focal length, the larger the light spot of the light source 100 reaching the first lens (closer to the light source side), requiring a larger aperture of the first lens to achieve system size control. If the aperture is too small, some light cannot enter the system, reducing the light efficiency.

[0156] An excessively large diameter increases costs.

[0157] In some possible implementations, the projection components satisfy the following relationship:

[0158] 0.2≤Z·D1 / D≤L';

[0159] Where Z is the distance between the light source 100 and the adjustment unit 310; D is the diameter of the lens; D1 is the diameter of the adjustment unit; and L' is the back focal length of the lens.

[0160] By adopting the above technical solution, the aperture D2 of the adjustment unit 310 is controlled by controlling the distance Z between the adjustment unit 310 and the light source 100. The larger the distance Z between the adjustment unit 310 and the light source 100, the larger the light spot reaching the surface of the adjustment unit 310, and the larger the required aperture D2, but the optical path will not change, so the aperture D of the first lens remains unchanged. Since the light source diverges, D should be greater than D2 to ensure that all light enters the lens.

[0161] In some possible implementations, 0.6mm ≤ Z ≤ 8mm;

[0162] And / or, 13mm≤D1 <D;

[0163] And / or, 20mm≤D≤50mm.

[0164] In some possible implementations, the projection components satisfy the following relationship:

[0165] 0.01≤d / (L'·n)≤0.3;

[0166] Wherein, n is the refractive index of the adjustment section 310 located on the line connecting the light source 100 and the lens 200; L' is the back focal length of the projection assembly; and d is the thickness of the adjustment section 310 located on the line connecting the light source 100 and the lens 200.

[0167] By adopting the above technical solution, the thickness d and refractive index n (equivalent air layer thickness d / n) of the adjustment section 310 need to be controlled within a certain proportional range with the back focus L'.

[0168] If the thickness is too thin, the headlights may break in complex driving environments such as extreme bumps, high temperatures, and high humidity. If the thickness is too thick, some light may not be able to enter the system, resulting in reduced light efficiency. Alternatively, the diameter of the first lens may be too large in order to receive all the light. When the thickness of the flat plate is close to that of the back focal length L', high-precision switching is required, which will also bring certain difficulties to the structural design.

[0169] The specific structure of the projection component can be described in the following embodiments. It should be noted that the following embodiments are only used to illustrate the relative positional relationship of the light source 100, adjustment structure 300, lens 200 and projection surface 400, and are not intended to limit the technical solution of this application to include only the following embodiments.

[0170] It should be noted that in the following embodiments, the direction indicated by the arrow is the direction in which the adjustment part can move, the solid line marking the projection surface 400 indicates the optimal projection distance in the current state, and the dashed line marking the projection surface 400 indicates the optimal projection distance in other states.

[0171] Implementation Method 1

[0172] Reference Figure 14 The projection assembly includes a light source 100, a lens 200, and an adjustment structure 300. The light-emitting side of the light source 100 can face the lens 200, and the adjustment structure 300 can be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can be transmitted to the lens 200 through the adjustment structure 300.

[0173] The number of adjustment parts 310 is set to one. The adjustment part 310 can move relative to the base 10 along the second direction, so that the adjustment part 310 can move to or from the line connecting the light source 100 and the lens 200. When the adjustment part 310 moves to the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the second state. When the adjustment part 310 moves out of the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the first state.

[0174] The thickness of the adjusting part 310 can be set to be greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0175] When the adjustment structure 300 is in the first state, the adjustment part 310 is not on the line connecting the light source 100 and the lens 200. The light from the light source 100 will not pass through the adjustment part 310. The propagation medium between the light source 100 and the lens 200 is always air. At this time, the optimal projection distance of the projection component can be set to 3 meters.

[0176] When the adjustment structure 300 is in the second state, at least one adjustment part 310 is located on the line connecting the light source 100 and the lens 200. Light from the light source 100 passes through the adjustment part 310 and propagates to the lens 200. At this time, the optimal projection distance of the projection assembly can be set to 10 meters. Thus, by setting the movable adjustment part 310, the projection assembly can be adapted to projection surfaces 400 at different distances.

[0177] Implementation Method 2

[0178] Reference Figure 15 The projection assembly includes a light source 100, a lens 200, and an adjustment structure 300. The light-emitting side of the light source 100 can face the lens 200, and the adjustment structure 300 can be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can be transmitted to the lens 200 through the adjustment structure 300.

[0179] The number of adjustment parts 310 is set to three, and the three adjustment parts 310 are set as three first adjustment parts 310a. The three first adjustment parts 310a form a first row of adjustment parts, and the first row of adjustment parts can move relative to the base 10 along a second direction, so that each first adjustment part 310a can move to or from the line connecting the light source 100 and the lens 200.

[0180] When the first adjustment part 310a moves to the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the second state. When the first adjustment part 310a moves away from the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the first state.

[0181] The thickness of the first adjustment part 310a can be set to be greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0182] When the adjustment structure 300 is in the first state, the first adjustment part 310a is not on the line connecting the light source 100 and the lens 200. The light from the light source 100 will not pass through the adjustment part 310. The propagation medium between the light source 100 and the lens 200 is always air. At this time, the optimal projection distance of the projection component can be set to 3 meters.

[0183] When the adjustment structure 300 is in the second state, at least one first adjustment part 310a is located on the line connecting the light source 100 and the lens 200. Light from the light source 100 passes through the adjustment part 310a and propagates to the lens 200. At this time, the optimal projection distance of the projection assembly can be set to 5 meters, 8 meters and 10 meters. Thus, by setting the movable first adjustment part 310a, the projection assembly can be adapted to projection surfaces 400 at different distances.

[0184] Specifically, the three first adjustment parts 310a are arranged in sequence, and the refractive index of the three first adjustment parts 310a gradually increases. The refractive index of the first first adjustment part 310a is less than that of the second first adjustment part 310a, and the refractive index of the second first adjustment part 310a is less than that of the third first adjustment part 310a.

[0185] When the adjustment structure 300 is in the second state, the optimal projection distance of the projection assembly can be set to 5 meters when the first adjustment part 310a is located on the line connecting the light source 100 and the lens 200; when the second adjustment part 310a is located on the line connecting the light source 100 and the lens 200, the optimal projection distance of the projection assembly can be set to 8 meters; and when the third adjustment part 310a is located on the line connecting the light source 100 and the lens 200, the optimal projection distance of the projection assembly can be set to 10 meters.

[0186] Implementation Method 3

[0187] Reference Figure 16 The projection assembly includes a light source 100, a lens 200, and an adjustment structure 300. The light-emitting side of the light source 100 can face the lens 200, and the adjustment structure 300 can be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can be transmitted to the lens 200 through the adjustment structure 300.

[0188] The number of adjustment parts 310 is set to three, and the three adjustment parts 310 are set as three second adjustment parts 310b. The three second adjustment parts 310b form a second row of adjustment parts, and the second row of adjustment parts can move relative to the base 10 along a second direction, so that each second adjustment part 310b can move to or from the line connecting the light source 100 and the lens 200.

[0189] When the second adjustment part 310b moves to the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the second state. When the second adjustment part 310b moves away from the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the first state.

[0190] The thickness of the second adjusting part 310b can be set to be greater than or equal to 0.3 mm and less than or equal to 1 mm. Taking a plane parallel to the first and second directions as a cross-section, the cross-sectional shape of the second adjusting part 310b can be set to rectangular.

[0191] When the adjustment structure 300 is in the first state, the second adjustment part 310b is not on the line connecting the light source 100 and the lens 200. The light from the light source 100 will not pass through the adjustment part 310. The propagation medium between the light source 100 and the lens 200 is always air. At this time, the optimal projection distance of the projection assembly can be set to 3 meters.

[0192] When the adjustment structure 300 is in the second state, at least one second adjustment part 310b is located on the line connecting the light source 100 and the lens 200. Light from the light source 100 passes through the adjustment part 310b and propagates to the lens 200. At this time, the optimal projection distance of the projection assembly can be set to 5 meters, 8 meters and 10 meters. Thus, by setting the movable second adjustment part 310b, the projection assembly can be adapted to projection surfaces 400 at different distances.

[0193] Specifically, the three second adjustment parts 310b are arranged sequentially, and the thickness of the three second adjustment parts 310b gradually increases. The thickness of the first second adjustment part 310b is less than the thickness of the second second adjustment part 310b, and the thickness of the second second adjustment part 310b is less than the thickness of the third second adjustment part 310b.

[0194] When the adjustment structure 300 is in the second state, the optimal projection distance of the projection assembly can be set to 5 meters when the first second adjustment unit 310b is located on the line connecting the light source 100 and the lens 200; when the second second adjustment unit 310b is located on the line connecting the light source 100 and the lens 200, the optimal projection distance of the projection assembly can be set to 8 meters; and when the third second adjustment unit 310b is located on the line connecting the light source 100 and the lens 200, the optimal projection distance of the projection assembly can be set to 10 meters.

[0195] Implementation Method 4

[0196] Reference Figure 17 The projection assembly includes a light source 100, a lens 200, and an adjustment structure 300. The light-emitting side of the light source 100 can face the lens 200, and the adjustment structure 300 can be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can be transmitted to the lens 200 through the adjustment structure 300.

[0197] The number of adjustment parts 310 is set to three, and the three adjustment parts 310 are set as three second adjustment parts 310b. The three second adjustment parts 310b form a second row of adjustment parts, and the second row of adjustment parts can move relative to the base 10 along a second direction, so that each second adjustment part 310b can move to or from the line connecting the light source 100 and the lens 200.

[0198] When the second adjustment part 310b moves to the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the second state. When the second adjustment part 310b moves away from the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the first state.

[0199] The thickness of the second adjustment section 310b can be set to be greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0200] When the adjustment structure 300 is in the first state, the second adjustment part 310b is not on the line connecting the light source 100 and the lens 200. The light from the light source 100 will not pass through the adjustment part 310. The propagation medium between the light source 100 and the lens 200 is always air. At this time, the optimal projection distance of the projection assembly can be set to 3 meters.

[0201] When the adjustment structure 300 is in the second state, at least one second adjustment part 310b is located on the line connecting the light source 100 and the lens 200. Light from the light source 100 passes through the adjustment part 310b and propagates to the lens 200. At this time, the optimal projection distance of the projection assembly can be set to 5 meters, 8 meters and 10 meters. Thus, by setting the movable second adjustment part 310b, the projection assembly can be adapted to projection surfaces 400 at different distances.

[0202] Specifically, the three second adjustment parts 310b are arranged sequentially, and the thickness of the three second adjustment parts 310b gradually increases. The thickness of the first second adjustment part 310b is less than the thickness of the second second adjustment part 310b, and the thickness of the second second adjustment part 310b is less than the thickness of the third second adjustment part 310b.

[0203] When the adjustment structure 300 is in the second state, the optimal projection distance of the projection assembly can be set to 5 meters when the first second adjustment unit 310b is located on the line connecting the light source 100 and the lens 200; when the second second adjustment unit 310b is located on the line connecting the light source 100 and the lens 200, the optimal projection distance of the projection assembly can be set to 8 meters; and when the third second adjustment unit 310b is located on the line connecting the light source 100 and the lens 200, the optimal projection distance of the projection assembly can be set to 10 meters.

[0204] With a plane parallel to the first and second directions as the cross-section, the cross-sectional shape of the second adjustment part 310b can be set as trapezoidal, and the cross-sectional shape of the row of adjustment parts can be set as trapezoidal. In the first direction, the thickness of the second adjustment part 310b can gradually increase.

[0205] In the first direction, the first surface of the row of adjustment parts faces the light source 100, and the second surface of the row of adjustment parts faces the lens 200. The included angle between the first surface and the second surface of the row of adjustment parts can be greater than 0 degrees and less than or equal to 45 degrees. For example, the included angle between the first surface and the second surface of the row of adjustment parts can be set to any included angle among 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees and 45 degrees.

[0206] Implementation Method 5

[0207] Reference Figure 18 The projection assembly includes a light source 100, a lens 200, and an adjustment structure 300. The light-emitting side of the light source 100 can face the lens 200, and the adjustment structure 300 can be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can be transmitted to the lens 200 through the adjustment structure 300.

[0208] The number of adjustment parts 310 is set to one. The adjustment part 310 can move relative to the base 10 along the second direction, so that the adjustment part 310 can move to or from the line connecting the light source 100 and the lens 200. When the adjustment part 310 moves to the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the second state. When the adjustment part 310 moves out of the line connecting the light source 100 and the lens 200, the adjustment structure 300 is in the first state.

[0209] For example, the adjustment unit 310 may be provided with a receiving cavity 311 for containing a refractive solution. It is easy to understand that the refractive index of the adjustment unit 310 can be changed by changing the type of refractive solution in the receiving cavity 311, thereby changing the optimal imaging distance of the projection assembly.

[0210] The adjustment unit 310 may be provided with an opening 312, which may communicate with the receiving cavity 311, so that a refractive solution can be filled into the receiving cavity 311 through the opening 312, or the refractive solution located in the receiving cavity 311 may be discharged through the opening 312, so that the refractive index of the adjustment unit 310 can be changed by filling the receiving cavity 311 with a refractive solution of different refractive index.

[0211] The thickness of the adjusting part 310 can be set to be greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0212] When the adjustment structure 300 is in the second state, the optimal projection distance of the projection component can be set to 3 meters when the cavity 311 is not filled with a refractive solution; the optimal projection distance of the projection component can be set to 5 meters when the cavity 311 is filled with a first refractive solution; and the optimal projection distance of the projection component can be set to 10 meters when the cavity 311 is filled with a second refractive solution. The refractive index of the first refractive solution can be less than the refractive index of the second refractive solution.

[0213] Implementation Method Six

[0214] Reference Figure 19 The projection assembly includes a light source 100, a lens 200, and an adjustment structure 300. The light-emitting side of the light source 100 can face the lens 200, and the adjustment structure 300 can be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can be transmitted to the lens 200 through the adjustment structure 300.

[0215] Multiple adjustment parts 310 are movable around a rotation axis 320, which is parallel to and spaced apart from the line connecting the light source 100 and the lens 200. When the adjustment structure 300 is in the second state, at least one adjustment part 310 rotates to the line connecting the light source 100 and the lens 200. Multiple adjustment parts 310 are arranged around the rotation axis 320, and when the adjustment structure 300 is in the second state, each adjustment part 310 rotates sequentially to the line connecting the light source 100 and the lens 200.

[0216] Among the plurality of adjustment portions 310 arranged around the rotation axis 320, the plurality of adjustment portions 310 may include a first adjustment portion 310a and a second adjustment portion 310b, so that by rotating the plurality of adjustment portions 310 relative to the base 10 around the rotation axis 320, different adjustment portions 310 can be rotated to the line connecting the light source 100 and the lens 200.

[0217] The thickness of the first adjustment part 310a and the second adjustment part 310b can be set to be greater than or equal to 0.3 mm and less than or equal to 1 mm.

[0218] When the adjustment structure 300 is in the second state, each adjustment part 310 can be rotated to the line connecting the light source 100 and the lens 200, or moved away from the line connecting the light source 100 and the lens 200, thereby ensuring that each adjustment part 310 can be used to deflect the light propagation process between the light source 100 and the lens 200. Furthermore, the optimal imaging distance of the projection assembly can be changed by altering the refractive index and thickness of the adjustment part 310.

[0219] In summary, by providing an adjustment structure 300 on the line connecting the light source 100 and the lens 200, the adjustment part 310 of the adjustment structure 300 can move relative to the light source 100. When the distance between the lens 200 and the projection surface 400 is relatively close, in the first state of the adjustment structure 300, the adjustment part 310 is not on the line connecting the light source 100 and the lens 200. The light from the light source 100 is deflected by the lens 200 and then illuminates the closer projection surface 400, thereby achieving close-range projection imaging.

[0220] When the distance between the lens 200 and the projection surface 400 is relatively far, and the adjustment structure 300 is in the second state, the adjustment part 310 can be moved to the line connecting the light source 100 and the lens 200, so that at least one adjustment part 310 can be located on the line connecting the light source 100 and the lens 200. Light from the light source 100 passes through the adjustment part 310, so that the light can pass through the adjustment part 310 to illuminate the projection surface 400 which is relatively far away, thereby realizing long-distance imaging.

[0221] Compared to projection components of related technologies, this projection component is suitable for projection surfaces 400 at different distances. When the distance between the projection surface 400 and the lens 200 changes, the state of the adjustment structure 300 can be changed so that the adjustment part 310 can move to or away from the line connecting the light source 100 and the lens 200. This allows the projection component to be suitable for projection surfaces 400 at different distances, making the image of the projection component clearer and improving the imaging effect of the projection component.

[0222] Example 7

[0223] Reference Figure 20 The projection assembly includes a light source 100, a lens 200, and an adjustment structure 300. The light-emitting side of the light source 100 can face the lens 200, and the adjustment structure 300 can be located between the light source 100 and the lens 200. When the adjustment structure 300 is in a second state, light from the light source 100 can be transmitted to the lens 200 through the adjustment structure 300.

[0224] The wedge plate has a continuously varying thickness. When the wedge plate is placed between the chip and the lens, different fields of view correspond to wedge plate thicknesses, resulting in different optical path adjustments. By adjusting the wedge angle of the wedge plate according to the actual projection tilt angle, different fields of view are at the optimal projection distance during tilted projection.

[0225] This application also provides a projection device, including the projection component described in any of the above embodiments. The projection device can be configured as a car, projector, or other similar device.

[0226] The projection device provided in this application includes the projection component of any of the above embodiments. Therefore, the projection device also has the advantages of the projection component of any of the above embodiments, which will not be described again in this application.

[0227] This application also provides a vehicle light that includes the projection device described in any of the above embodiments.

[0228] The vehicle headlight provided in this application embodiment includes any of the above-mentioned projection devices. Therefore, the projection vehicle headlight also has the advantages of any of the above-mentioned projection devices, which will not be elaborated further in this application embodiment.

[0229] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0230] In the description of this utility model, it should be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0231] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0232] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A projection component, characterized in that, It includes a light source (100), a lens (200), and an adjustment structure (300); The light-emitting side of the light source (100) faces the lens (200); The adjustment structure (300) includes at least one adjustment part (310) that is movable relative to the light source (100); When the adjustment structure (300) is in the first state, the adjustment part (310) is not on the line connecting the light source (100) and the lens (200); when the adjustment structure (300) is in the second state, at least one of the adjustment parts (310) is on the line connecting the light source (100) and the lens (200), and light from the light source (100) passes through the adjustment part (310).

2. The projection assembly according to claim 1, characterized in that, The adjustment structure (300) is located between the light source (100) and the lens (200).

3. The projection assembly according to claim 2, characterized in that, The number of the adjustment parts (310) is set to multiple, and the multiple adjustment parts (310) include several first adjustment parts (310a); In the plurality of first adjustment parts (310a), at least two of the first adjustment parts (310a) have different refractive indices.

4. The projection assembly according to claim 3, characterized in that, When the adjustment structure (300) is in the second state, the number of the first adjustment section (310a) on the line connecting the light source (100) and the lens (200) can be adjusted.

5. The projection assembly according to claim 3, characterized in that, When the adjustment structure (300) is in the second state, each of the first adjustment parts (310a) can be located on the line connecting the light source (100) and the lens (200).

6. The projection assembly according to claim 2, characterized in that, The number of the adjustment parts (310) is set to multiple, and the multiple adjustment parts (310) include several second adjustment parts (310b); In the plurality of second adjustment portions (310b), at least two of the second adjustment portions (310b) have different thicknesses.

7. The projection assembly according to claim 6, characterized in that, When the adjustment structure (300) is in the second state, the number of the second adjustment section (310b) on the line connecting the light source (100) and the lens (200) can be adjusted.

8. The projection assembly according to claim 6, characterized in that, When the adjustment structure (300) is in the second state, each of the second adjustment parts (310b) can be located on the line connecting the light source (100) and the lens (200).

9. The projection assembly according to any one of claims 2-8, characterized in that, The light source (100) and the lens (200) are arranged along a first direction; The adjustment part (310) can move along a second direction, which intersects with the first direction.

10. The projection assembly according to claim 9, characterized in that, The number of the adjustment parts (310) is set to multiple, and the multiple adjustment parts (310) are arranged along the second direction; When the adjustment structure (300) is in the second state, each of the adjustment parts (310) can be moved to the line connecting the light source (100) and the lens (200), or moved away from the line connecting the light source (100) and the lens (200).

11. The projection assembly according to claim 10, characterized in that, Using a plane parallel to the first direction and the second direction as a cross-section, At least one of the adjustment parts (310) has a rectangular cross-sectional shape; and / or, at least one of the adjustment parts (310) has a trapezoidal cross-sectional shape.

12. The projection assembly according to claim 11, characterized in that, With a plane parallel to the first direction and the second direction as the cross-section, at least one of the cross-sectional shapes of the adjustment part (310) is trapezoidal, bamboo shoot-shaped, fan-shaped, and fan-like; The first surface of the adjustment part (310) faces the light source (100), the second surface of the adjustment part (310) faces the lens (200), and the included angle between the first surface and the second surface of the adjustment part (310) is less than or equal to 45 degrees.

13. The projection assembly according to any one of claims 2-8, characterized in that, The light source (100) and the lens (200) are arranged along a first direction; The adjustment part (310) can move around the rotation axis (320), which is parallel to and spaced apart from the line connecting the light source (100) and the lens (200). When the adjustment structure (300) is in the second state, at least one of the adjustment parts (310) rotates to the line connecting the light source (100) and the lens (200).

14. The projection assembly according to claim 13, characterized in that, The number of the adjustment parts (310) is set to multiple, and the multiple adjustment parts (310) are arranged around the rotation axis (320); When the adjustment structure (300) is in the second state, each of the adjustment parts (310) rotates sequentially to the line connecting the light source (100) and the lens (200).

15. The projection assembly according to any one of claims 2-8, characterized in that, The adjustment part (310) is provided with a receiving cavity (311) for containing a refractive solution.

16. The projection assembly according to claim 15, characterized in that, The refractive solution is prepared as follows: 80%≤T<100%； Wherein, T is the transmittance of the refracting solution.

17. The projection assembly according to claim 15, characterized in that, When the adjustment unit (310) is in the first state, the receiving cavity (311) is not filled with the refractive solution; When the adjustment unit (310) is in the second state, the receiving cavity (311) contains the refractive solution, which is replaceable.

18. The projection assembly according to claim 2, characterized in that, The number of the adjustment parts (310) is set to multiple, and the multiple adjustment parts (310) include several third adjustment parts (310c); The third adjustment section (310c) has the same refractive index and the same thickness; when the adjustment structure (300) is in the second state, the number of the third adjustment section (310c) on the line connecting the light source (100) and the lens (200) is adjustable.

19. The projection assembly according to claim 2, characterized in that, The number of the adjustment parts (310) is set to multiple, and the multiple adjustment parts (310) include several third adjustment parts (310c); The refractive indices of the third adjustment parts (310c) are the same, and the thicknesses of the third adjustment parts (310c) are different; when the adjustment structure (300) is in the second state, the number of the third adjustment parts (310c) on the line connecting the light source (100) and the lens (200) is adjustable. Alternatively, the refractive index of the third adjustment section (310c) may be different, and the thickness of the third adjustment section (310c) may be different; when the adjustment structure (300) is in the second state, the number of the third adjustment sections (310c) on the line connecting the light source (100) and the lens (200) may be adjustable. Alternatively, the refractive index of the third adjustment section (310c) may be different, and the thickness of the third adjustment section (310c) may be the same; when the adjustment structure (300) is in the second state, the number of the third adjustment sections (310c) on the line connecting the light source (100) and the lens (200) may be adjustable.

20. The projection assembly according to any one of claims 2-8, characterized in that, The thickness of the adjustment part (310) is greater than or equal to 0.3 mm and less than or equal to 1 mm.

21. The projection assembly according to any one of claims 2-8, characterized in that, The refractive index of the adjustment part (310) is greater than or equal to 1 and less than or equal to 2.

22. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 5m≤ [f(nL'+d)] / [n(L'-f)+d] ≤50m; Where f is the focal length of the lens (200); n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; and d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200).

23. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 0mm<2f²Fδ(nL'+d)² / {[nf(L'-f)+df]²-[δF(nL'+d)]²}≤1000mm; Where f is the focal length of the lens (200); n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); F is the aperture number of the lens (200); and δ is the limit value of human eye resolution.

24. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 0.15≤d / n≤0.8; Wherein, n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200).

25. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 0°≤arctan{[H·n(L'-f)+d] / [f(nL'+d)]} ≤20°; Wherein, n is the refractive index of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; d is the thickness of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); and H is the mounting height of the lens.

26. The projection assembly according to claim 25, characterized in that, 150mm≤H≤1500mm.

27. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 0°≤arctan{[H·n(L'-f)+d] / [f(nL'+d)]} ≤10°; Wherein, n is the refractive index of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; d is the thickness of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); and H is the mounting height of the lens.

28. The projection assembly according to claim 27, characterized in that, 150mm≤H≤1500mm.

29. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 1≤d / (D·n)≤1 / (2·tanθ); Wherein, n is the refractive index of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); d is the thickness of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); D is the diameter of the lens; and θ is the light-gathering angle of the lens.

30. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 0.2≤Ζ·D1 / D≤L'; Where Z is the distance between the light source (100) and the adjustment part (310); D is the diameter of the lens; D1 is the diameter of the adjustment part; and L' is the back focal length of the lens.

31. The projection assembly according to claim 30, characterized in that, 0.6mm≤Ζ≤8mm; And / or, 13mm≤D1 <D; And / or, 20mm≤D≤50mm.

32. The projection assembly according to any one of claims 2-8, characterized in that, The projection components satisfy the following relationship: 0.01≤d / ( L'·n)≤0.3; Wherein, n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; and d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200).

33. The projection assembly according to claim 1, characterized in that, At least a portion of the adjustment section (310) is provided with an anti-reflection membrane.

34. The projection assembly according to claim 33, characterized in that, The first part and the second part of the adjustment part (310) are provided with anti-reflection membranes; The transmittance of the anti-reflection membrane located in the first part of the adjustment section (310) is different from that of the anti-reflection membrane located in the second part of the adjustment section (310). Alternatively, the adjustment unit (310) may include multiple adjustment regions provided with anti-reflection membranes, with at least some of the adjustment regions having different anti-reflection membrane permeability.

35. The projection assembly according to claim 1, characterized in that, The cross-sectional shape of the adjustment structure (300) is set to one of the following: trapezoidal, bamboo shoot-shaped, fan-shaped, and fan-like, with a plane parallel to the first and second directions as the cross-section.

36. The projection assembly according to claim 1, characterized in that, The projection assembly also includes a heat sink (110) located near the light source (100), the heat sink (110) being used at least to accelerate the heat dissipation of the light source (100).

37. A projection assembly, characterized in that, It includes a light source (100), a lens (200), and an adjustment structure (300); The adjustment structure (300) includes at least one adjustment part (310); the adjustment part (310) is disposed on the line connecting the light source (100) and the lens (200), and light from the light source (100) passes through the adjustment part (310); The adjustment part (310) is provided with a receiving cavity (311) for containing a refractive solution.

38. The projection assembly according to claim 37, characterized in that, The refractive solution is prepared as follows: 80%≤T<100%； Wherein, T is the transmittance of the refracting solution.

39. The projection assembly according to claim 37, characterized in that, When the adjustment unit (310) is in the first state, the receiving cavity (311) is not filled with the refractive solution; When the adjustment unit (310) is in the second state, the receiving cavity (311) contains the refractive solution, which is replaceable.

40. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 5m≤ [f(nL'+d)] / [n(L'-f)+d] ≤50m; Where f is the focal length of the lens (200); n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; and d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200).

41. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 0mm<2f²Fδ(nL'+d)² / {[nf(L'-f)+df]²-[δF(nL'+d)]²}≤1000mm; Where f is the focal length of the lens (200); n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); F is the aperture number of the lens (200); and δ is the limit value of human eye resolution.

42. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 0.15≤d / n≤0.8; Wherein, n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200).

43. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 0°≤arctan{[H·n(L'-f)+d] / [f(nL'+d)]} ≤20°; Wherein, n is the refractive index of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; d is the thickness of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); and H is the mounting height of the lens.

44. The projection assembly according to claim 37, characterized in that, 150mm≤H≤1500mm.

45. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 0°≤arctan{[H·n(L'-f)+d] / [f(nL'+d)]} ≤10°; Wherein, n is the refractive index of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; d is the thickness of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); and H is the mounting height of the lens.

46. ​​The projection assembly according to claim 45, characterized in that, 150mm≤H≤1500mm.

47. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 1≤d / (D·n)≤1 / (2·tanθ); Wherein, n is the refractive index of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); d is the thickness of the adjustment part (310) located on the line connecting the light source (100) and the lens (200); D is the diameter of the lens; and θ is the light-gathering angle of the lens.

48. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 0.2≤Ζ·D1 / D≤L'; Where Z is the distance between the light source (100) and the adjustment part (310); D is the diameter of the lens; D1 is the diameter of the adjustment part; and L' is the back focal length of the lens.

49. The projection assembly according to claim 48, characterized in that, 0.6mm≤Ζ≤8mm; And / or, 13mm≤D1 <D; And / or, 20mm≤D≤50mm.

50. The projection assembly according to claim 37, characterized in that, The projection components satisfy the following relationship: 0.01≤d / ( L'·n)≤0.3; Wherein, n is the refractive index of the adjustment section (310) located on the line connecting the light source (100) and the lens (200); L' is the back focal length of the projection assembly; and d is the thickness of the adjustment section (310) located on the line connecting the light source (100) and the lens (200).

51. The projection assembly according to claim 37, characterized in that, At least a portion of the adjustment section (310) is provided with an anti-reflection membrane.

52. The projection assembly according to claim 51, characterized in that, The first part and the second part of the adjustment part (310) are provided with anti-reflection membranes; The transmittance of the anti-reflection membrane located in the first part of the adjustment section (310) is different from that of the anti-reflection membrane located in the second part of the adjustment section (310). Alternatively, the adjustment unit (310) may include multiple adjustment regions provided with anti-reflection membranes, with at least some of the adjustment regions having different anti-reflection membrane permeability.

53. The projection assembly according to claim 37, characterized in that, The cross-sectional shape of the adjustment structure (300) is set to one of the following: trapezoidal, bamboo shoot-shaped, fan-shaped, and fan-like, with a plane parallel to the first and second directions as the cross-section.

54. A projection device, characterized in that, Includes the projection component as described in any one of claims 1-53.

55. A vehicle light, characterized in that, Including the projection device as described in claim 54.

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