Space ring and lens

Abstract

The utility model relates to the technical field of imaging lenses, in particular to a space ring and a lens, and the space ring comprises an upper surface, a lower surface, an outer side wall and a bearing boss. The outer side wall is located on the outermost side of the space ring and connected with the upper surface and the lower surface, and an inner groove is formed in the outer side wall; the bearing bosses are arranged on the upper surface and the lower surface. The bearing bosses are arranged on the upper surface and the lower surface of the space ring and used for mounting the bearing lenses, so that the contact area of the lenses and the space ring is reduced, and extrusion force between the space ring and the lenses is concentrated on the bearing bosses; the inner groove is formed in the outer side wall of the space ring, the extrusion force on the bearing boss is relieved through the inner groove, the deformation quantity of the lens is reduced, the imaging quality of the lens is improved, lens expansion is relieved, and the sensitivity of the imaging performance of the lens at different temperatures is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of imaging lenses, in particular to a spacer and a lens. Background Art

[0002] Optical lenses have the function of light transmission and are widely used in various imaging fields such as automotive, security, and intelligent manufacturing. As a precision optical component, optical lenses have strict requirements on manufacturing and installation accuracy, and their imaging performance is relatively sensitive to different temperatures. Optical lenses are usually installed in the lens barrel in a superimposed or interlocking manner. During assembly, they are circumferentially fixed by the inner wall of the lens barrel and axially fixed by the locking ring, front ring, spacer and lens barrel. However, under high or low temperature conditions, due to the different axial and radial expansion and contraction of the lens, spacer and lens barrel, extrusion occurs between the components, causing deformation of the optical effective diameter and thus affecting the optical performance; that is, at high temperatures, the radial expansion of traditional lenses is greater than the radial expansion of the lens barrel, resulting in the effective diameter of the lens being squeezed and deformed, resulting in changes in the surface shape and lens curvature radius (the optical effective area is squeezed and affects the imaging), which in turn causes the position of the imaging surface to change, resulting in a decrease in the resolution of the lens.

[0003] Therefore, it is necessary to provide an optical lens that does not affect the optical effective area under high and low temperature conditions to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art. On the one hand, the present invention provides a spacer ring for use in a lens, wherein the spacer ring is an annular structure, comprising: an upper surface, a lower surface, an outer side wall and a supporting boss; the outer side wall is located at the outermost side of the spacer ring and connects the upper surface and the lower surface, and an inner groove is provided on the outer side wall; the supporting boss is arranged on the upper surface, and / or the supporting boss is arranged on the lower surface.

[0005] Further preferably, it further comprises a first extending arm and a second extending arm, wherein the first extending arm and the second extending arm are not parallel to the optical axis of the spacer, and the first extending arm and the second extending arm form the inner groove.

[0006] Further preferably, along the optical axis direction, the first extension arm and the second extension arm both protrude from the upper surface and the lower surface.

[0007] Further preferably, the first extension arm and the second extension arm have an included angle Y, and 30°≤Y≤150°.

[0008] Further preferably, when projected along the optical axis, the thickness of the supporting boss is G, and the thickness of the first extension arm and the second extension arm are both H, wherein H≥2G.

[0009] Further preferably, it further comprises an annular arm parallel to the optical axis, and two ends of the annular arm are respectively connected to the first extension arm and the second extension arm.

[0010] Further preferably, a central through hole is provided on the annular arm, and the central through hole passes through the annular arm in a direction perpendicular to the optical axis.

[0011] Further preferably, the supporting boss and the mid-position through hole are both provided in plurality, and along the optical axis direction, the mid-position through hole and the supporting boss are provided correspondingly.

[0012] On the other hand, the present application also provides a lens, comprising a lens and the above-mentioned spacer, wherein the lens is mounted on the supporting boss of the spacer.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) By providing supporting bosses on the upper and lower surfaces of the spacer for mounting the supporting lens, the contact area between the lens and the spacer is reduced, and the extrusion force between the spacer and the lens is concentrated on the supporting bosses; and an inner groove is provided on the outer wall of the spacer, and the extrusion force on the supporting bosses is relieved by the inner groove, that is, the spacer is designed to be easy to elastically deform, thereby reducing the impact of extrusion on the lens, reducing the deformation of the lens, improving the imaging quality of the lens, and thereby alleviating the expansion of the lens and reducing the sensitivity of the imaging performance of the lens at different temperatures. (2) By providing a first extension arm and a second extension arm that are not parallel to the optical axis on the outer wall, and the inner groove is formed by the first extension arm and the second extension arm, it is easy for the spacer to elastically deform in the direction of the optical axis, thereby reducing the extrusion effect on the lens. (3) When viewed along the optical axis, the first extension arm and the second extension arm protrude from the upper surface and the lower surface, that is, the first extension arm and the second extension arm extend toward the center point of the spacer, and the range of the angle between the first extension arm and the second extension arm is limited, so that the first extension arm and the second extension arm are easy to deform when subjected to force. The limitation of the angle can also ensure that the deformation of the first extension arm and the second extension arm has a certain buffer, and it is also easy for the first extension arm and the second extension arm to recover after deformation. (4) By controlling the thickness of the support boss projected in the optical axis direction to be less than or equal to the thickness of the first extension arm and the second extension arm, that is, ensuring that the support boss and the first extension arm and the second extension arm are misaligned in position, the deformation of the first extension arm and the second extension arm is facilitated. Under the same extrusion pressure, the thickness limitation is more conducive to the deformation of the spacer. (5) By providing an annular arm between the first extension arm and the second extension arm, and providing a mid-position through hole corresponding to the support boss on the annular arm, the extrusion force on the support boss is relieved, even if the first extension arm and the second extension arm are deformed, thereby alleviating the expansion of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1A schematic diagram of the structure of the spacer provided by the utility model;

[0015] Figure 2 for Figure 1 Another perspective structural diagram of the spacer;

[0016] Figure 3 for Figure 2 A structural cross-sectional view of the spacer along the AA direction;

[0017] Figure 4 for Figure 3 An enlarged view of point I in FIG;

[0018] Figure 5 for Figure 2 A cross-sectional view of the spacer along the BB direction;

[0019] Figure 6 This is a structural cross-sectional view of the lens provided by the utility model. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on 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.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0023] See also Figures 1-6As shown, in this specific embodiment, a spacer 10 is disclosed for use within a lens. The spacer 10 has an annular structure and includes: an upper surface 11, a lower surface 12, an outer sidewall 13, and a supporting boss 20. The outer sidewall 13 is located at the outermost side of the spacer 10 and connects the upper surface 11 and the lower surface 12. The outer sidewall 13 is provided with an inner groove 30. The supporting boss 20 is provided on the upper surface 11 and / or the lower surface 12. It will be understood that by providing the inner groove 30 on the outer sidewall 13 of the annular spacer 10, the spacer 10 is deformed on the outer sidewall 13. In a preferred embodiment, the supporting boss 20 is provided on both the upper surface 11 and the lower surface 12 of the spacer 10, allowing the spacer 10 to be installed in both the vertical direction. By providing supporting bosses 20 on the upper surface 11 and the lower surface 12 of the spacer 10 for mounting the supporting lens 40, the contact area between the lens 40 and the spacer 10 is reduced, and the extrusion force between the spacer 10 and the lens 40 is concentrated on the supporting bosses 20; and an inner groove 30 is provided on the outer wall 13 of the spacer 10, and the extrusion force on the supporting bosses 20 is relieved by the inner groove 30, that is, the spacer 10 is designed to be easy to undergo elastic deformation, thereby reducing the impact of extrusion on the lens 40, reducing the deformation amount of the lens 40, improving the imaging quality of the lens 40, and then alleviating the expansion of the lens, and reducing the sensitivity of the imaging performance of the lens at different temperatures.

[0024] In one embodiment, the outer wall 13 is connected to a first extension arm 31 and a second extension arm 32. The first extension arm 31 and the second extension arm 32 are not parallel to the optical axis O of the spacer 10, and the first extension arm 31 and the second extension arm 32 form an inner groove 30. It should be noted that the optical axis O of the spacer 10 is perpendicular to the upper surface 11 and the lower surface 12 of the spacer 10 and passes through the center axis of the spacer 10. Please refer to Figure 1 As shown, the optical axis O direction is a direction parallel to the optical axis O of the spacer 10. By providing a first extension arm 31 and a second extension arm 32 on the outer sidewall 13 that are not parallel to the optical axis O, and by forming the inner groove 30 by the first extension arm 31 and the second extension arm 32, the spacer 10 can be elastically deformed in the direction of the optical axis O, thereby reducing the impact of compression on the lens 40.

[0025] In one embodiment, please refer to Figure 3 and Figure 5 As shown, viewed along the optical axis O, the first extension arm 31 and the second extension arm 32 both protrude from the upper surface 11 and the lower surface 12. That is, the first extension arm 31 and the second extension arm 32 extend toward the optical axis O of the spacer 10, so that the first extension arm 31 and the second extension arm 32 are deformed by force.

[0026] Based on the above solution, please refer to Figure 4As shown, the first extension arm 31 and the second extension arm 32 have an included angle Y, and the range of 30°≤Y≤150° is defined. Limiting the range of values ​​for the included angle Y between the first extension arm 31 and the second extension arm 32 ensures a certain degree of cushioning during deformation and facilitates recovery after deformation. Preferably, the included angle Y is 90°, and the first extension arm 31 and the second extension arm 32 are symmetrically designed in a direction perpendicular to the optical axis O, facilitating the processing and precision control of the spacer 10.

[0027] Based on the above solution, please refer to Figure 4 As shown, projected along the optical axis O, the thickness of the supporting boss 20 is G, and the thickness of the first extension arm 31 and the second extension arm 32 are both H, where H ≥ 2G. By controlling the thickness of the supporting boss 20 projected along the optical axis O to be less than or equal to the thickness of the first extension arm 31 and the second extension arm 32, that is, ensuring that there is a positional offset between the supporting boss 20 and the first extension arm 31 and the second extension arm 32, the deformation of the first extension arm 31 and the second extension arm 32 is facilitated. Under the same extrusion force, the limited thickness is more conducive to the deformation of the spacer 10.

[0028] In one embodiment, please refer to Figure 5 As shown, the spacer 10 further includes an annular arm 33 parallel to the optical axis O, with both ends of the annular arm 33 connected to the first extension arm 31 and the second extension arm 32, respectively. That is, the inner groove 30 is defined by the first extension arm 31, the second extension arm 32, and the annular arm 33. Preferably, a central through hole 331 is defined in the annular arm 33, which passes through the annular arm 33 in a direction perpendicular to the optical axis O. By disposing the annular arm 33 between the first extension arm 31 and the second extension arm 32 and providing the central through hole 331 on the annular arm 33 corresponding to the supporting boss 20, the squeezing force on the supporting boss 20 is relieved, facilitating deformation of the first extension arm 31 and the second extension arm 32, thereby alleviating lens expansion.

[0029] Based on the above solution, multiple supporting bosses 20 and multiple central through-holes 331 are provided. Providing multiple supporting bosses 20 and multiple central through-holes 331 facilitates alleviating the extrusion force at different locations on the spacer 10. Furthermore, along the optical axis O, the central through-holes 331 are arranged corresponding to the supporting bosses 20. That is, the central through-holes 331 are all arranged along the optical axis O of the supporting bosses 20. This facilitates alleviating the extrusion force on the supporting bosses 20 at the central through-holes 331 along the optical axis O, thereby facilitating deformation of the spacer 10 under stress.

[0030] On the other hand, the present application also provides a lens, comprising a lens 40 and the aforementioned spacer 10, wherein the lens 40 is mounted on the supporting boss 20 of the spacer 10. Preferably, the upper surface 11 and the lower surface 12 of the spacer 10 are both provided with supporting bosses 20, and the lens 40 is supported on the supporting bosses 20 of the upper surface 11 and the lower surface 12, that is, the spacer 10 can simultaneously alleviate the expansion of multiple lenses 40, thereby improving the expansion alleviation effect of the lens.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spacer ring for use in a lens, wherein the spacer ring is an annular structure, characterized in that: include: upper surface, lower surface, outer side wall and supporting boss; The outer side wall is located at the outermost side of the spacer and connects the upper surface and the lower surface, and an inner groove is formed on the outer side wall; The supporting boss is arranged on the upper surface, and / or the supporting boss is arranged on the lower surface.

2. The spacer according to claim 1, characterized in that The outer side wall is connected to a first extension arm and a second extension arm. The first extension arm and the second extension arm are not parallel to the optical axis of the spacer, and the first extension arm and the second extension arm form the inner groove.

3. The spacer according to claim 2, characterized in that Viewed along the optical axis, both the first extension arm and the second extension arm protrude from the upper surface and the lower surface.

4. The spacer according to claim 3, characterized in that The first extension arm and the second extension arm have an included angle Y, and 30°≤Y≤150°.

5. The spacer according to claim 4, characterized in that Projected along the optical axis, the thickness of the supporting boss is G, and the thickness of the first extension arm and the second extension arm are both H, where H≥2G.

6. The spacer according to claim 2, characterized in that It also includes a ring arm parallel to the optical axis, and two ends of the ring arm are respectively connected to the first extension arm and the second extension arm.

7. The spacer according to claim 6, characterized in that A central through hole is provided on the annular arm, and the central through hole passes through the annular arm in a direction perpendicular to the optical axis.

8. The spacer according to claim 7, characterized in that The supporting boss and the middle through hole are both provided in plurality, and along the optical axis direction, the middle through hole and the supporting boss are provided correspondingly.

9. A lens, characterized in that: It comprises a lens and a spacer as described in any one of claims 1 to 8, wherein the lens is mounted on the supporting boss of the spacer.

Images