Lens and automobile

Abstract

The utility model discloses a lens and an automobile. The lens comprises a lens barrel, and a first lens, a heating sheet, a heat insulation film and an elastic member which are arranged in the lens barrel. The first lens comprises an image side surface, and the heating sheet abuts against the image side surface. The heat-insulating film is attached to the surface, away from the image side surface, of the heating sheet; the elastic piece abuts against the surface, away from the heating piece, of the heat insulation film, and the elastic force of deformation recovery of the elastic piece is used for tightly abutting the heating piece against the image side face of the first lens. The heat insulation film is attached to the surface, away from the first lens, of the heating piece, heat loss of the heating piece is reduced, heating efficiency is improved, and defrosting and demisting of the lens are rapidly achieved. Elastic pieces are arranged at the bottoms of the heating piece and the heat insulation film, it is ensured that the heating piece tightly abuts against the image side face of the first lens, and the heating efficiency of the lens is further improved.

Description

Technical Field

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

[0002] With the increasing prevalence of automotive automation and intelligence, the requirements for image clarity from automotive cameras are becoming increasingly stringent. In automated driving technologies, automotive cameras act as the eyes of the vehicle; blurriness is unacceptable during operation, as it can lead to program errors and, in severe cases, even fatal accidents. During use, environmental factors can cause water vapor or droplets to form on the object-side lens surface, blurring the captured image and seriously affecting driving safety. Therefore, these cameras must possess automatic defrosting and defogging functions.

[0003] Existing defogging lenses typically use a heater to heat the object-side lens to remove fog. However, it is difficult for the heater to concentrate the heat on the object-side lens. The heat is easily diffused to the lens barrel or the optical components behind it, causing heat loss and affecting heating efficiency. In addition, the optical system behind the object-side lens also experiences a temperature increase due to the heat, which can easily affect the overall image quality of the lens. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art. This utility model provides a lens, including: a lens barrel, and a first lens, a heating element, a heat insulation film and an elastic element located inside the lens barrel; the first lens includes an image-side surface, and the heating element abuts against the image-side surface; the heat insulation film is attached to the surface of the heating element away from the image-side surface; the elastic element abuts against the surface of the heat insulation film away from the heating element, and the elastic force of the elastic element restoring its deformation is used to tightly abut the heating element against the first lens.

[0005] Preferably, the lens further includes a spacer ring for supporting the elastic element.

[0006] Preferably, the spacer includes an installation platform and a support platform, the support platform protruding from the surface of the installation platform, the installation platform and the support platform together defining a receiving groove, and the elastic element is disposed on the installation platform and located within the receiving groove.

[0007] Preferably, the support platform abuts against the image-side surface of the first lens to support the first lens.

[0008] Preferably, the support platform has a ring-shaped structure, and the surface near the image side is a plane.

[0009] Preferably, the support platform is located on the mounting platform near the optical axis of the lens.

[0010] Preferably, the lens further includes a locking ring, which is screwed onto the outer wall of the lens barrel, and the locking ring abuts the first lens against the support platform.

[0011] Preferably, the heat insulation film is an aerogel felt.

[0012] Preferably, the elastic element is a spring structure or a sheet structure.

[0013] On the other hand, this application also provides a car that includes the aforementioned lens.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) A heat insulation film is attached to the surface of the heating element away from the first lens to reduce the heat loss of the heating element, improve the heating efficiency, and quickly achieve defrosting and defogging of the lens. (2) By setting an elastic element at the bottom of the heating element and the heat insulation film, the heating element is ensured to be tightly pressed against the image side of the first lens, further improving the heating efficiency of the lens. (3) The elastic element is installed on the mounting platform of the spacer and located in the receiving groove, ensuring the ease of installation of the elastic element and improving the assembly efficiency; and the first lens is supported by the support platform of the spacer, improving the installation accuracy of the first lens. Attached Figure Description

[0015] Figure 1 An exploded view of the lens provided by this utility model;

[0016] Figure 2 A cross-sectional view of the lens assembly provided by this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of A in the image. Detailed Implementation

[0018] The technical solutions of the present utility model 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 utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, 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 utility model based on the specific circumstances.

[0021] Please see Figures 1-3 As shown in this specific embodiment, a lens includes: a lens barrel 10, and a first lens 20, a heating element 30, a heat insulation film 40, and an elastic element 50 located within the lens barrel 10; the first lens 20 includes an image-side surface 21, and the heating element 30 abuts against the image-side surface 21; the heat insulation film 40 is attached to the surface of the heating element 30 away from the image-side surface 21; the elastic element 50 abuts against the surface of the heat insulation film 40 away from the heating element 30, and the elastic force of the elastic element 50 in restoring its deformation is used to tightly abut the heating element 30 against the first lens 20. Attaching the heat insulation film 40 to the surface of the heating element 30 away from the first lens 20 reduces heat loss from the heating element 30, improves heating efficiency, and quickly achieves defrosting and defogging of the lens. By providing the elastic element 50 at the bottom of the heating element 30 and the heat insulation film 40, it is ensured that the heating element 30 tightly abuts against the image-side surface of the first lens 20, further improving the heating efficiency of the lens. It should be noted that the image-side surface 21 refers to the surface of the first lens 20 near the imaging end, that is, the surface of the first lens 20 near the photosensitive chip.

[0022] Furthermore, the lens also includes a spacer 60, which supports the elastic element 50. The spacer 60 improves the installation accuracy of the elastic element 50.

[0023] More specifically, the spacer ring 60 includes a mounting platform 61 and a support platform 62. The support platform 62 protrudes from the surface of the mounting platform 61. The mounting platform 61 and the support platform 62 together define a receiving groove 63. The elastic element 50 is disposed on the mounting platform 61 and located within the receiving groove 63. Installing the elastic element 50 on the mounting platform 61 of the spacer ring 60 and placing it within the receiving groove 63 ensures convenient installation of the elastic element 50 and improves assembly efficiency. It should be noted that placing the elastic element 50 through the receiving groove 63 on the spacer ring 60 facilitates the alignment of the elastic element 50 with the components, thus preventing mistaken identification.

[0024] Furthermore, the support platform 62 abuts against the image-side surface 21 of the first lens 20 to support the first lens 20. The support platform 62, via the spacer 60, supports the first lens 20, improving its installation accuracy. It is understood that the installation position of the first lens 20 inside the lens needs to be strictly controlled and is predetermined during the design phase. To ensure the lens's heating efficiency and prevent heat loss, a heating element 30, a heat-insulating film 40, and an elastic element 50 are arranged at the bottom of the first lens 20. The processing accuracy of these three components can affect the installation accuracy of the first lens 20, especially the elastic element 50, whose elastic deformation can severely impact its installation accuracy. Therefore, by providing the support platform 62 on the spacer 60, the support platform 62 ensures the installation accuracy of the first lens 20.

[0025] Furthermore, the support platform 62 has a ring-shaped structure, and the surface near the image side 21 is flat. The ring-shaped support platform 62 is easy to manufacture and can improve the installation accuracy of the first lens 20.

[0026] Furthermore, the support platform 62 is positioned on the mounting platform 61 near the optical axis o of the lens. Positioning the support platform 62 near the optical axis o ensures that the receiving groove 63 is located outside the spacer 60, facilitating the assembly of the elastic element 50. This also prevents structures such as the elastic element 50, heat insulation film 40, and heating element 30 from approaching the optical axis o, thus preventing stray light from affecting the lens's imaging quality.

[0027] Furthermore, the lens also includes a locking ring 70, which is screwed onto the outer wall of the lens barrel 10. The locking ring 70 abuts the first lens 20 against the support platform 62. The first lens 20 is installed by the cooperation of the locking ring 70 and the support platform 62, preventing the elastic element 50 from causing the first lens 20 to tilt, thereby further improving the installation accuracy of the first lens 20.

[0028] Furthermore, the heat insulation film 40 is an aerogel felt. Due to its low density and high heat insulation efficiency, aerogel felt can improve the heat insulation efficiency of the lens and reduce its weight.

[0029] Preferably, the elastic element 50 is a spring structure or a sheet structure. Of course, the elastic element 50 includes, but is not limited to, spring structures and sheet structures. Any structure that can achieve elastic deformation and ensure that the heating element 30 is tightly pressed against the first lens 20 is within the scope of protection of this application.

[0030] This application also provides a car that includes the lens described in the above embodiments. Installing the lens on the car prevents the onboard lens from being affected by moisture or fog, thereby improving image quality and enhancing driving safety.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A lens characterized by comprising: The lens barrel comprises: a lens barrel, and a first lens, a heating sheet, a heat insulation film and an elastic member in the lens barrel; the first lens comprises an image side surface, and the heating sheet abuts against the image side surface; the heat insulation film is attached to a surface of the heating sheet away from the image side surface; the elastic member abuts against a surface of the heat insulation film away from the heating sheet, and the elastic member restores the elastic force of deformation to tightly abut the heating sheet against the first lens; the lens barrel further comprises a spacer ring for bearing the elastic member, the spacer ring comprises a mounting platform and a supporting platform, the supporting platform protrudes from a surface of the mounting platform, and the mounting platform and the supporting platform jointly define a receiving groove, the elastic member is arranged on the mounting platform and located in the receiving groove, and the supporting platform abuts against the image side surface of the first lens to support the first lens.

2. The lens according to claim 1, characterized in that, The supporting platform is annular, and a surface close to the image side surface is planar.

3. The lens according to claim 2, characterized in that, The supporting platform is arranged on the mounting platform close to an optical axis of the lens barrel.

4. The lens according to claim 3, characterized in that, The lens barrel further comprises a locking ring, the locking ring is screwed on an outer sidewall of the lens barrel, and the locking ring abuts the first lens against the supporting platform.

5. The lens of claim 1, wherein, The heat insulation film is aerogel felt.

6. The lens of claim 1, wherein, The elastic member is a spring structure or a spring sheet structure.

7. An automobile characterized by comprising: The lens barrel according to any one of claims 1-6.

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