Space ring assembly, lens and automobile

Abstract

The invention relates to the technical field of camera shooting, and discloses a space ring assembly, a lens and an automobile. The space ring assembly comprises an upper space ring and a lower space ring, and the upper space ring abuts against and is attached to the lower space ring along the center shaft. The upper space ring is of an annular structure and comprises an upper end face, a lower end face and an outer side wall connected with the upper end face and the lower end face, the diameter of the upper end face is larger than that of the lower end face, a first inclined face connected with the lower end face is arranged on the outer side wall, and the distance between the first inclined face and the center shaft is gradually decreased from the upper end face to the lower end face. The lower space ring comprises an annular column and a plurality of supporting columns arranged on the surface of the annular column, the supporting columns are provided with second slopes parallel to the first slopes, and the first slopes abut against and are attached to the second slopes. Therefore, the upper space ring is easier to open the plurality of supporting columns or the plurality of supporting columns are easier to lift up the upper space ring, so that the upper space ring is easier to displace on the central shaft relative to the circular ring column, and temperature drift compensation is further realized.

Description

Technical Field

[0001] This invention relates to the field of camera technology, specifically to a spacer assembly, a lens, and an automobile. Background Technology

[0002] Lenses, which transmit light, are widely used in the automotive industry. However, with the development of automotive lenses, the quality requirements for lenses are constantly increasing, and the temperature drift value of lenses under high and low temperatures has become one of the criteria for judging lenses.

[0003] In existing lenses, there are limited methods to structurally improve temperature drift. Since the spacer assembly inside the lens is a key optical element used to assemble and contact the lens elements, current methods for improving temperature drift typically involve changing the length of the spacer assembly, adjusting the radial clearance between the spacer assembly and the lens barrel, or changing the material of the spacer assembly. However, the range of adjustment is limited. For lenses with high temperature drift requirements, suitable methods are often difficult to find. Therefore, how to effectively improve the temperature drift of lenses under high and low temperature environments has become an urgent problem to be solved in this field. Summary of the Invention

[0004] This invention discloses a spacer assembly, a lens, and an automobile, with the aim of at least solving one of the technical problems existing in the prior art.

[0005] In a first aspect, embodiments of this application provide a spacer assembly having a central axis, including an upper spacer and a lower spacer, wherein the upper spacer abuts against and adheres to the lower spacer along the central axis; the upper spacer is an annular structure, including an upper end face, a lower end face, and an outer side wall connecting the upper end face and the lower end face, wherein the diameter of the upper end face is larger than the diameter of the lower end face, and a first inclined surface connected to the lower end face is provided on the outer side wall, and the distance between the first inclined surface and the central axis gradually decreases from the upper end face towards the lower end face; the lower spacer includes a circular cylinder and a plurality of support columns disposed on the surface of the circular cylinder, wherein a second inclined surface parallel to the first inclined surface is provided on the support columns, and the first inclined surface abuts against and adheres to the second inclined surface.

[0006] In some embodiments, the plurality of support columns are evenly distributed around the central axis.

[0007] In some embodiments, the number of support columns is four.

[0008] In some embodiments, the angle between the first inclined plane and the central axis ranges from 45° to 60°.

[0009] In some embodiments, the support column extends along the central axis, and the dimension of the support column in the central axis direction ranges from 1.2 mm to 1.8 mm.

[0010] In some embodiments, the upper spacer includes an upper end and a lower end connected along the central axis, the upper end being a ring structure and the lower end being a conical structure, the upper end face being located on the side of the upper end away from the lower end, the lower end face being located on the side of the lower end away from the upper end, and the first inclined surface being located on the outer side of the lower end.

[0011] In some embodiments, the upper spacer ring and the lower spacer ring are made of the same material, and the material is any one of 6061 aluminum alloy, copper or SUS303 stainless steel.

[0012] Secondly, embodiments of this application also provide a lens, including a lens barrel, a first lens, a second lens, and the aforementioned spacer assembly. The first lens, the second lens, and the spacer assembly are disposed within the lens barrel along the central axis, and the first lens abuts against and fits against the upper spacer, while the second lens abuts against and fits against the lower spacer.

[0013] Thirdly, embodiments of this application also provide an automobile, including the aforementioned lens and mounting plate, wherein the lens is fixed on the mounting plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the spacer assembly provided in an embodiment of the present invention;

[0015] Figure 2 An exploded view of the spacer assembly provided in an embodiment of the present invention;

[0016] Figure 3 This is a cross-sectional view of the upper spacer provided in an embodiment of the present invention;

[0017] Figure 4 A cross-sectional view of a lens provided in an embodiment of the present invention;

[0018] Figure 5 The simulation diagram of the spacer assembly provided in the embodiment under high and low temperature environments. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] The spacer assembly and lens provided in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, this application embodiment provides a spacer assembly 100 with a central axis o. The projection of the spacer assembly 100 along the central axis o is annular. The spacer assembly 100 consists of an upper spacer 10 and a lower spacer 20, both of which are annular structures. The upper spacer 10 abuts against the lower spacer 20 along the central axis o. It should be noted that the spacer assembly 100 is an optical element disposed inside the lens and is itself a rotationally symmetric structure, meaning that the spacer assembly 100 is formed around the central axis o. This central axis o is also the optical axis of the spacer assembly 100.

[0024] Specifically, the upper spacer 10 is an annular structure, comprising an upper end face 11, a lower end face 12, and an outer wall 13 connecting the upper end face 11 and the lower end face 12. The diameter of the upper end face 11 is larger than the diameter of the lower end face 12, meaning the upper spacer 10 has a structure with a larger upper end and a smaller lower end. The upper end face 11 and the lower end face 12 refer to two planes spaced apart along the central axis o, with the upper end face 11 perpendicular to the central axis o. Furthermore, the outer wall 13 has a first inclined surface 131 connected to the lower end face 12, and the distance between the first inclined surface 131 and the central axis o gradually decreases from the upper end face 11 to the lower end face 12. That is, the first inclined surface 131 is part of the outer wall 13, and the diameter of the first inclined surface 131 decreases sequentially from near the upper end face 11 to the lower end face 12, making the diameter of the first inclined surface 131 smallest near the lower end face 12. The upper spacer 10 is designed with a conical shape near its lower end face 12 to facilitate assembly with the lower spacer 20. It should be noted that the diameter refers to the dimension perpendicular to the central axis o. The lower spacer 20 includes a circular ring 21 and multiple support posts 22 disposed on the surface of the circular ring 21. Each support post 22 has a second inclined surface 221 parallel to the first inclined surface 131, and the first inclined surface 131 and the second inclined surface 221 abut against each other, thus achieving the abutment and fit between the upper spacer 10 and the lower spacer 20. The support posts 22 are spaced apart on the same surface of the circular ring 21 to ensure that the support posts 22 can support the upper spacer 10 on the central axis o.

[0025] It is understandable that the first inclined surface 131 of the upper spacer 10 is designed such that its diameter decreases sequentially from the upper end face 11 to the lower end face 12, so that the diameter of the first inclined surface 131 is the smallest near the lower end face 12. That is, the upper spacer 10 is designed as a conical structure near the lower spacer 20. The support column 22 of the lower spacer 20 is provided with a second inclined surface 221 parallel to the first inclined surface 131, and the first inclined surface 131 and the second inclined surface 221 abut against each other, so that the upper spacer 10 abuts against the support column 22 of the lower spacer 20. That is, the upper spacer 10 is inserted between the multiple support columns 22 of the lower spacer 20. The lower spacer 20 is supported by multiple support pillars 22, and the upper spacer 10 and lower spacer 20 are abutted and fitted together by a first inclined surface 131 and a second inclined surface 221. This makes it easier for the upper spacer 10 to open up the multiple support pillars 22 or for the multiple support pillars 22 to lift the upper spacer 10, making it easier for the upper spacer 10 to move relative to the annular column 21 on the central axis o. The deformation of the spacer assembly 100 will cause changes in the spacing between the lenses disposed on the spacer assembly 100. By adjusting the spacing, temperature drift can be improved. That is, the greater the change in the spacing between the lenses, the greater the range of temperature drift that can be improved, allowing the spacer assembly 100 to adapt to lenses with high temperature drift requirements. Of course, the abutting and fitting of the upper spacer 10 and lower spacer 20 through multiple support pillars 22 makes it easier to adjust the spacing between the two end faces when assembling the upper spacer 10 and lower spacer 20, so as to cope with lenses with different spacing requirements and improve the applicability of the spacer assembly 100.

[0026] To facilitate understanding of the principles of this application, specific experimental data are provided below. The existing spacer is a complete circular ring structure with an original design height of 5mm. Due to inevitable compression of the spacer after assembly, the assembled height at room temperature is 4.99946mm. Placing the existing spacer in a high-temperature environment of 75°C for three minutes, the measured height is 5.00590mm; placing it in a low-temperature environment of -25°C for three minutes, the measured height is 4.99052mm. That is, compared to the assembled height at room temperature, the change is 6.44μm at high temperature and 8.94μm at low temperature. The spacer assembly 100 of this application was tested under the same conditions. The original design height of the spacer assembly 100 of this application is 5mm. Due to the susceptibility of the upper spacer 10 and lower spacer 20 to compression deformation, the assembled height at room temperature is 4.99034mm. The height of the spacer assembly 100 was measured after three minutes of exposure to a high temperature of 75°C: 5.00604 mm. After three minutes of exposure to a low temperature of -25°C: 4.93254 mm. This means that the height change at high temperature is 15.7 μm, and at low temperature is 57.8 μm. The experimental data shows that, regardless of the temperature, the spacer assembly 100 designed in this application exhibits greater height changes than conventional spacers. This allows for a wider range of adjustment for the distance between the lenses placed at both ends of the spacer assembly 100, resulting in a greater range of temperature drift improvement and ensuring that the spacer assembly 100 can adapt to lenses with high temperature drift requirements. Figure 5 As shown, Figure 5 The test simulation diagram of the spacer assembly 100 of this application under high and low temperature environment is provided. It can be seen from the figure that the spacer assembly 100 deforms significantly along the central axis o under high and low temperature environment, that is, the spacer assembly 100 can adapt to the lens with high temperature drift requirements.

[0027] In some embodiments, multiple support columns 22 are evenly distributed around the central axis o to ensure that the upper spacer 10 is in uniform contact with the support columns 22, so that the deformation of the multiple support columns 22 is consistent, and to ensure that the upper end face 11 of the upper spacer 10 is always in a horizontal state when it is displaced on the central axis o, so as to avoid the spacer assembly 100 causing the lens to tilt.

[0028] In some embodiments, the number of support columns 22 is four. Considering that the upper spacer 10 is a ring structure, four support columns 22 are provided to support the upper spacer 10, ensuring that the upper spacer 10 is subjected to uniform force around its perimeter, and ensuring that the upper spacer 10 and the lower spacer 20 are installed stably and subjected to uniform force.

[0029] In some embodiments, such as Figure 3As shown, the angle A between the first inclined surface 131 and the central axis o ranges from 45° to 60°, and the angle between the second inclined surface 221 and the central axis o also ranges from 45° to 60°. The range of the angle between the first inclined surface 131 and the second inclined surface 221 ensures that the upper spacer 10 can more easily compress the support column 22 to cause deformation, and ensures that the spacer assembly 100 can achieve better temperature drift compensation.

[0030] In some embodiments, the support column 22 extends along the central axis o, and the size of the support column 22 in the central axis o direction is in the range of 1.2mm to 1.8mm, which ensures that the support column 22 is more likely to deform on the surface of the annular column 21, which is beneficial for a large adjustment of the distance between the upper spacer 10 and the lower spacer 20.

[0031] In some embodiments, such as Figure 2 As shown, the upper spacer 10 includes an upper end 15 and a lower end 16 disposed along the central axis o. The upper end 15 is a circular ring structure, and the lower end 16 is a conical structure. The upper end face 11 is located on the side of the upper end 15 away from the lower end 16, and the lower end face 12 is located on the side of the lower end 16 away from the upper end 15. The first inclined surface 131 is located on the outer surface of the lower end 16. By setting the upper spacer 10 as a funnel-shaped structure, it is ensured that the upper spacer 10 is more conveniently installed onto the support column 22 of the lower spacer 20. Preferably, the diameter of the upper end 15 is smaller than the diameter of the circle enclosed by the multiple support columns 22 on the surface perpendicular to the central axis o, so as to avoid the outer wall 13 of the upper spacer 10 from contacting the lens barrel 200 and causing friction, thereby affecting the temperature drift compensation effect of the spacer assembly 100.

[0032] In some embodiments, the upper spacer 10 and the lower spacer 20 are made of the same material, and the material is any one of 6061 aluminum alloy, copper or SUS303 stainless steel, which facilitates the processing and forming of the upper spacer 10 and the lower spacer 20, and makes it easy for the upper spacer 10 and the lower spacer 20 to deform and move, and can also reduce the cost of the upper spacer 10 and the lower spacer 20.

[0033] Secondly, such as Figure 4 As shown, this application embodiment also provides a lens, including a lens barrel 200, a first lens 300, a second lens 400, and the aforementioned spacer assembly 100. The first lens 300, the second lens 400, and the spacer assembly 100 are disposed within the lens barrel 200 along the central axis o. The first lens 300 abuts against and fits against the upper end face 11, and the second lens 400 abuts against and fits against the lower spacer 20, so that the lens has good temperature drift compensation performance through the spacer assembly 100.

[0034] Thirdly, this application also provides a car, including the above-mentioned lens and mounting plate, with the lens fixed on the mounting plate to ensure that the car's driving assistance photography system can operate normally in different high and low temperature environments.

[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A spacer assembly having a central shaft, characterized in that, include: An upper spacer and a lower spacer, wherein the upper spacer abuts against and is attached to the lower spacer along the central axis; The upper spacer is an annular structure, which includes an upper end face, a lower end face, and an outer side wall connecting the upper end face and the lower end face. The diameter of the upper end face is larger than the diameter of the lower end face. A first inclined surface connected to the lower end face is provided on the outer side wall, and the distance between the first inclined surface and the central axis gradually decreases from the upper end face to the lower end face. The lower spacer includes a circular cylinder and a plurality of support columns disposed on the surface of the circular cylinder. The support columns are provided with a second inclined surface parallel to the first inclined surface, and the first inclined surface and the second inclined surface abut against each other.

2. The spacer assembly according to claim 1, characterized in that, The multiple support columns are evenly distributed around the central axis.

3. The spacer assembly according to claim 2, characterized in that, The number of support columns is four.

4. The spacer assembly according to claim 1, characterized in that, The angle between the first inclined plane and the central axis ranges from 45° to 60°.

5. The spacer assembly according to claim 1, characterized in that, The support column extends along the central axis, and the dimension of the support column in the central axis direction is greater than 1.2mm to 1.8mm.

6. The spacer assembly according to claim 1, characterized in that, The upper spacer ring includes an upper end and a lower end connected along the central axis. The upper end is a circular ring structure. The upper end face is located on the side of the upper end away from the lower end, and the lower end face is located on the side of the lower end away from the upper end. The first inclined surface is located on the outer side of the lower end.

7. The spacer assembly according to claim 1, characterized in that, The upper spacer ring and the lower spacer ring are made of the same material, and the material is any one of 6061 aluminum alloy, copper or SUS303 stainless steel.

8. A lens, characterized in that, The lens includes a lens barrel, a first lens, a second lens, and a spacer assembly as described in any one of claims 1-7. The first lens, the second lens, and the spacer assembly are disposed within the lens barrel along the central axis, and the first lens abuts against and is fitted with the upper spacer, and the second lens abuts against and is fitted with the lower spacer.

9. A car, characterized in that, It includes the lens and mounting plate as described in claim 8, wherein the lens is fixed on the mounting plate.

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