Lens
By reasonably constraining the size relationship between the lens and the lens barrel in the lens, the problem of poor lens assembly stability is solved, and more stable lens assembly and reliability verification is achieved.
Patent Information
- Application Number
- CN202421301134.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-06
AI Technical Summary
In the use environment of the existing lens, the assembly relationship between the lens and the lens barrel is prone to change, resulting in poor assembly stability.
By reasonably constraining the relationship between the maximum effective radius Dn of the nth lens, the maximum radius D10m of the image side of the lens barrel and the minimum radius d10m of the image side of the lens barrel, the adaptation and bonding of the lens to the lens barrel are ensured, and the group is enhanced Stand strength and stability.
It effectively ensures the adaptation and stable assembly of the lens to the lens barrel, improves the assembly stability of the lens, and ensures good performance during trust verification.
Smart Images
Figure CN222482496U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical imaging devices, and more specifically, to a lens. Background Art
[0002] With the development of photography and videography technologies, as a core component, the performance of a lens directly affects the quality of the captured images. A lens usually consists of a lens barrel and lenses disposed in the lens barrel. In some existing lenses, due to limitations in materials and manufacturing processes, in some usage environments, the assembly relationship between the lenses and the lens barrel may change, which will lead to poor assembly stability of the lens.
[0003] That is to say, the lenses in the prior art have the problem of poor assembly stability. Summary of the Utility Model
[0004] The main purpose of the present utility model is to provide a lens to solve the problem of poor assembly stability of the lenses in the prior art.
[0005] The present utility model provides a lens, which includes a lens barrel and a lens group disposed in the lens barrel. The lens barrel is at least one, and the lens group at least includes a first lens and an nth lens. The first lens and the nth lens are the lenses located at both ends in the lens group. Among them, the following relationship is satisfied among the maximum effective radius Dn of the nth lens, the maximum radius D10m of the image side of the lens barrel, and the minimum radius d10m of the image side of the lens barrel: 2.6 < Dn / (D10m - d10m) < 8.5.
[0006] Further, at least one of the first lens and the nth lens is adhesively bonded to the lens barrel.
[0007] Further, the following relationship is satisfied between the maximum radius D10m of the image side of the lens barrel and the minimum radius d10m of the image side of the lens barrel: 0.4 < D10m - d10m < 1.3.
[0008] Further, the following relationship is satisfied between the maximum effective radius D1 of the object side of the first lens and the maximum effective radius Dn of the nth lens: 0.9 < D1 / Dn < 1.2.
[0009] Further, the following relationship is satisfied among the maximum effective radius D1 of the object side of the first lens, the maximum radius D10m of the image side of the lens barrel, and the minimum radius d10m of the image side of the lens barrel: 3.1 < D1 / (D10m - d10m) < 8.0.
[0010] Further, the maximum effective radius D1 of the object side of the first lens satisfies: 0 mm < D1 < 4 mm; and / or the maximum effective radius Dn of the nth lens satisfies: 0 mm < Dn < 4.2 mm.
[0011] Furthermore, there are one or more lens barrels. When there is one lens barrel, the peripheral area of the object side surface of the first lens is in contact with the lens barrel, and the peripheral area of the image side surface of the nth lens is glued to the inner wall surface of the lens barrel; or the peripheral area of the object side surface of the first lens is glued to the inner wall surface of the lens barrel, and the peripheral area of the image side surface of the nth lens is in contact with the lens barrel.
[0012] Further, the lens barrel is one or more, when the lens barrel is multiple, the multiple lens barrels include a first lens barrel and a second lens barrel, the first lens barrel is located on the object side of the second lens barrel, one of the image side end surface of the first lens barrel and the object side end surface of the second lens barrel has a boss structure, the other of the image side end surface of the first lens barrel and the object side end surface of the second lens barrel has a groove structure matched with the boss structure, and the axial thickness CP0 of the first lens barrel and the axial thickness CP01 of the second lens barrel satisfy the following: 3.6 <CP0 / CP01<0.5。
[0013] Furthermore, the axial thickness CP0 of the first lens barrel and the axial thickness CP01 of the second lens barrel satisfy: 0 mm <CP0+CP01<5mm。
[0014] Further, the peripheral area of the object side surface of the first lens is glued to the inner wall surface of the second lens barrel, and the peripheral area of the image side surface of the nth lens is abutted against the second lens barrel; or the peripheral area of the object side surface of the first lens is glued to the inner wall surface of the second lens barrel, and the peripheral area of the image side surface of the nth lens is glued to the inner wall surface of the second lens barrel.
[0015] Applying the technical solution of the utility model, the lens comprises a lens barrel and a lens group arranged in the lens barrel, there is at least one lens barrel, the lens group comprises at least a first lens and an n-th lens, the first lens and the n-th lens are lenses located at two ends of the lens group, wherein the maximum effective radius Dn of the n-th lens, the maximum radius D10m of the image side surface of the lens barrel and the minimum radius d10m of the image side surface of the lens barrel satisfy the following relationship: 2.6 <Dn / (D10m-d10m)<8.5。
[0016] By reasonably constraining the relationship between the maximum effective radius Dn of the nth lens, the maximum radius D10m of the image side of the lens barrel, and the minimum radius d10m of the image side of the lens barrel, it is helpful to ensure that the size of the nth lens is compatible with the size of the lens barrel, to facilitate the assembly of the nth lens in the lens barrel, to ensure the assembly strength of the nth lens and the lens barrel, to ensure the assembly stability, and thus to ensure good performance in subsequent reliability verification. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0018] Figure 1 The structure diagram of the first embodiment of the present utility model is shown;
[0019] Figure 2 The structure diagram of the second embodiment of the present utility model is shown;
[0020] Figure 3 The structure diagram of the third embodiment of the present invention is shown;
[0021] Figure 4 The structure diagram of the fourth embodiment of the present utility model is shown.
[0022] The above drawings include the following reference numerals:
[0023] 10. Lens barrel; 11. Snap-fit structure; 21. First lens; 22. Nth lens; 30. Glue structure; 40. First lens barrel; 50. Second lens barrel; 61. Boss structure; 62. Groove structure. DETAILED DESCRIPTION
[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.
[0026] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.
[0027] In order to solve the problem of poor assembly stability of lenses in the prior art, the utility model provides a lens.
[0028] like Figures 1 to 4 As shown, the lens includes a lens barrel 10 and a lens group arranged in the lens barrel 10, the lens barrel 10 is at least one, the lens group includes at least a first lens 21 and an n-th lens 22, the first lens 21 and the n-th lens 22 are lenses located at both ends of the lens group, wherein the maximum effective radius Dn of the n-th lens 22, the maximum radius D10m of the image side surface of the lens barrel 10 and the minimum radius d10m of the image side surface of the lens barrel 10 satisfy: 2.6 <Dn / (D10m-d10m)<8.5。
[0029] By reasonably restricting the relationship between the maximum effective radius Dn of the n-th lens 22, the maximum radius D10m of the image side of the lens barrel 10, and the minimum radius d10m of the image side of the lens barrel 10, it is beneficial to ensure the compatibility of the size of the n-th lens 22 with the size of the lens barrel 10, which is conducive to the assembly of the n-th lens 22 in the lens barrel 10, and is beneficial to ensuring the assembly strength of the n-th lens 22 and the lens barrel 10, ensuring assembly stability, and further ensuring good performance in subsequent reliability verification.
[0030] It should be noted that the above lens group is composed of two lenses or more than two lenses. The first lens 21 is the lens closest to the object side in the lens group, and the n-th lens 22 is the lens closest to the image side in the lens group. In Figures 1 to 4 it, the left side is the object side and the right side is the image side.
[0031] It should also be noted that the maximum effective radius of the above n-th lens 22 includes either the maximum effective radius of the object side of the n-th lens 22 or the maximum effective radius of the image side of the n-th lens 22.
[0032] Specifically, at least one of the first lens 21 and the n-th lens 22 is adhesively bonded to the lens barrel 10. That is to say, in actual assembly, only the first lens 21 can be adhesively bonded to the lens barrel 10, or only the n-th lens 22 can be adhesively bonded to the lens barrel 10, or both the first lens 21 and the n-th lens 22 can be adhesively bonded to the lens barrel 10. The adhesive bonding is carried out by means of dispensing, and the dispensing position is usually between the outer peripheral area of the object side or the image side of the lens and the lens barrel 10.
[0033] Specifically, the maximum radius D10m of the image side of the lens barrel 10 and the minimum radius d10m of the image side of the lens barrel 10 satisfy: 0.4 < D10m - d10m < 1.3. Such a setting is beneficial to ensuring the rationality of the size of the image side end of the lens barrel 10 and is beneficial to ensuring that the lens can be stably assembled into the lens barrel 10.
[0034] Specifically, the maximum effective radius D1 of the object side of the first lens 21 and the maximum effective radius Dn of the n-th lens 22 satisfy: 0.9 < D1 / Dn < 1.2. Such a setting is beneficial to ensuring the aperture stability of the first lens 21 and the n-th lens 22, avoiding sensitivity problems caused by too large a difference in the apertures of the front and rear lenses, and is beneficial to ensuring the matching degree of the front and rear lenses.
[0035] Specifically, the following relationship is satisfied among the maximum effective radius D1 of the object side surface of the first lens 21, the maximum radius D10m of the image side surface of the lens barrel 10, and the minimum radius d10m of the image side surface of the lens barrel 10: 3.1 < D1 / (D10m - d10m) < 8.0. Such a setting is beneficial to ensuring the adaptation of the size of the first lens 21 to the size of the lens barrel 10, facilitating the stable assembly of the first lens 21 in the lens barrel 10, ensuring the assembly stability of the first lens 21 and the lens barrel 10, and guaranteeing reliability.
[0036] In a specific embodiment of the present application, the maximum effective radius D1 of the object side surface of the first lens 21 satisfies: 0 mm < D1 < 4 mm; the maximum effective radius Dn of the nth lens 22 satisfies: 0 mm < Dn < 4.2 mm.
[0037] In different embodiments of the present application, there is one or more lens barrels 10. When there are multiple lens barrels, specifically two, the two lens barrels are divided into a first lens barrel 40 and a second lens barrel 50. The first lens barrel 40 is located on the object side of the second lens barrel 50, and the first lens barrel 40 and the second lens barrel 50 are detachably connected.
[0038] When there are multiple lens barrels including the first lens barrel 40 and the second lens barrel 50, the following relationship is satisfied between the axial thickness CP0 of the first lens barrel 40 and the axial thickness CP01 of the second lens barrel 50: 3.6 < CP0 / CP01 < 0.5. Such a setting is beneficial to ensuring a certain thickness difference between the first lens barrel 40 and the second lens barrel 50, facilitating the stable assembly of the lens group in the lens barrel 10 with a larger axial thickness, thereby avoiding the risk that the first lens barrel 40 and the second lens barrel 50 are deformed during subsequent reliability verification, which may affect the assembly accuracy of the lens group, and is beneficial to improving the reliability performance.
[0039] Preferably, the following relationship is satisfied between the axial thickness CP0 of the first lens barrel 40 and the axial thickness CP01 of the second lens barrel 50: 0 mm < CP0 + CP01 < 5 mm. Such a setting is beneficial to ensuring a relatively small overall axial thickness of the first lens barrel 40 and the second lens barrel 50, facilitating the miniaturization of the lens.
[0040] In addition, when there are multiple lens barrels including the first lens barrel 40 and the second lens barrel 50, one of the image side end face of the first lens barrel 40 and the object side end face of the second lens barrel 50 has a boss structure 61 that extends axially, and the other of the image side end face of the first lens barrel 40 and the object side end face of the second lens barrel 50 has a groove structure 62 that cooperates with the boss structure 61. Such a setting is beneficial to ensuring the assembly stability of the first lens barrel 40 and the second lens barrel 50.
[0041] The following describes the lens of the present application in combination with specific embodiments and drawings.
[0042] Embodiment 1
[0043] like Figure 1 As shown, the lens of the first embodiment is described.
[0044] In this embodiment, there is only one lens barrel 10, and the lens groups are sequentially assembled into the lens barrel 10 from the image side of the lens barrel 10. The outer peripheral area of the object side of the first lens 21 abuts against the lens barrel 10, and the outer peripheral area of the image side of the nth lens 22 is glued to the inner wall surface of the lens barrel 10.
[0045] Specifically, the object side end of the lens barrel 10 has a buckling structure 11 extending toward the optical axis, and the outer peripheral area of the object side surface of the first lens 21 is in contact with the buckling structure 11. The outer peripheral area of the image side surface of the nth lens 22 is glued to the inner wall surface of the lens barrel 10 through the glue structure 30, and the object side surface of the nth lens 22 is in contact with the lens or spacer on its object side.
[0046] When assembling the lens of this embodiment, the lens group is first assembled into the lens barrel 10 from the image side of the lens barrel 10 in sequence, and then the n-th lens 22 is glued to the lens barrel 10 by dispensing glue, so as to realize the assembly and fixation of the lens group and the lens barrel 10. This arrangement of this embodiment is conducive to ensuring that the aperture of the first lens 21 is small, which is conducive to molding. After subsequent processing, the sky surface of the lens can achieve super black.
[0047] Embodiment 2
[0048] like Figure 2 As shown, the lens of the second embodiment is described.
[0049] In this embodiment, there is only one lens barrel 10, and the lens groups are sequentially assembled into the lens barrel 10 from the object side of the lens barrel 10. The outer peripheral area of the object side surface of the first lens 21 is glued to the inner wall surface of the lens barrel 10, and the image side surface of the nth lens 22 is in contact with the lens barrel 10.
[0050] Specifically, the outer peripheral area of the object side surface of the first lens 21 is bonded to the inner wall surface of the lens barrel 10 through the adhesive structure 30. The image side end of the lens barrel 10 has a buckling structure 11 extending toward the optical axis, the outer peripheral area of the image side surface of the nth lens 22 is abutted against the buckling structure 11, and the object side surface of the nth lens 22 is abutted against the lens or spacer on its object side.
[0051] When assembling the lens of this embodiment, the lens group is first assembled into the lens barrel 10 from the object side of the lens barrel 10 in sequence, and the first lens 21 is glued to the lens barrel 10 by glue dispensing, so as to realize the assembly and fixation of the lens group and the lens barrel 10. This arrangement of this embodiment is conducive to ensuring that the diameter of the n-th lens 22 is small, which is conducive to the molding of the n-th lens 22. At the same time, it can ensure that the glue dispensing space is large and the size of the lens's zenith head is small.
[0052] Embodiment 3
[0053] like Figure 3 As shown, the lens of the third embodiment is described.
[0054] In this embodiment, there are multiple lens barrels, including a first lens barrel 40 and a second lens barrel 50, and the lens group is assembled in the second lens barrel 50. The outer peripheral area of the object side surface of the first lens 21 is glued to the inner wall surface of the second lens barrel 50 through the glue structure 30, and the outer peripheral area of the image side surface of the n-th lens 22 is abutted against the second lens barrel 50. Specifically, the image side end of the second lens barrel 50 has a buckling structure 11, and the outer peripheral area of the image side surface of the n-th lens 22 is abutted against the buckling structure 11.
[0055] Specifically, the outer peripheral area of the image side end surface of the first lens barrel 40 has a boss structure 61 , and the outer peripheral area of the object side end surface of the second lens barrel 50 has a groove structure 62 matched with the boss structure 61 .
[0056] When assembling the lens of this embodiment, the lens group is first assembled into the second lens barrel 50 from the object side of the second lens barrel 50 in sequence, and the first lens 21 and the second lens barrel 50 are glued by dispensing, so that the lens group and the second lens barrel 50 are assembled and fixed, and then the first lens barrel 40 is covered on the object side end of the second lens barrel 50 to realize the assembly of the entire lens. This arrangement of this embodiment is conducive to achieving super black on the sky surface of the lens during subsequent processing, ensuring that the diameter of the nth lens 22 is small, which is conducive to molding and ensuring sufficient dispensing space.
[0057] Embodiment 4
[0058] like Figure 4 As shown, the lens of Example 4 is described.
[0059] In this embodiment, there are multiple lens barrels, including a first lens barrel 40 and a second lens barrel 50, and the lens group is assembled in the second lens barrel 50. The outer peripheral area of the object side surface of the first lens 21 is glued to the inner wall surface of the second lens barrel 50 through the glue structure 30, and the outer peripheral area of the image side surface of the n-th lens 22 is glued to the inner wall surface of the second lens barrel 50 through the glue structure 30.
[0060] Specifically, the outer peripheral area of the image side end surface of the first lens barrel 40 has a boss structure 61 , and the outer peripheral area of the object side end surface of the second lens barrel 50 has a groove structure 62 matched with the boss structure 61 .
[0061] When the lens of this embodiment is assembled, the lens groups are assembled into the second lens barrel 50 from both sides of the second lens barrel 50. For example, the first lens 21 is assembled into the second lens barrel 50 from the object side of the second lens barrel 50, and the nth lens 22 is assembled into the second lens barrel 50 from the image side of the second lens barrel 50.
[0062] The first lens 21 and the second lens barrel 50, and the n-th lens 22 and the second lens barrel 50 are glued by glue dispensing, so that the lens group and the second lens barrel 50 are assembled and fixed, and then the first lens barrel 40 is covered on the object side end of the second lens barrel 50 to realize the assembly of the entire lens. This embodiment is arranged in this way, which is conducive to achieving super black on the sky surface of the lens during subsequent processing, ensuring that the apertures of the first lens 21 and the n-th lens 22 are both small, which is conducive to molding and ensuring sufficient glue dispensing space.
[0063] The structural parameters of Examples 1 to 4 are given in Table 1 below. Unit: mm.
[0064] Parameters / Examples one two three Four D1 3.74 3.79 3.79 3.74 Dn 3.99 3.2 3.2 3.54 D10m 4.59 3.79 3.79 4.14 d10m 4.12 2.59 2.59 3.67 CP0 1.1 1.1 CP01 3.05 3.01
[0065] Table 1
[0066] In summary, Embodiments 1 to 4 respectively satisfy the relationships shown in Table 2.
[0067] Conditional / Example one two three Four Dn / (D10m-d10m) 8.49 2.67 2.67 7.53 CP0 / CP01 0.36 0.37 D10m-d10m 0.47 1.20 1.20 0.47 D1-Dn -0.25 0.59 0.59 0.20 D1 / Dn 0.94 1.18 1.18 1.06 Dn / (D10m-d10m) 7.96 3.16 3.16 7.96 CP0+CP01 4.15 4.11
[0068] Table 2
[0069] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0070] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.
[0072] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A lens, characterized in that: It includes an objective lens barrel (10) and a lens group disposed in the objective lens barrel (10). The objective lens barrel (10) is at least one, and the lens group includes at least a first lens (21) and an nth lens (22). The first lens (21) and the nth lens (22) are the lenses located at both ends of the lens group. Among them, the following is satisfied among the maximum effective radius Dn of the nth lens (22), the maximum radius D10m of the image side of the objective lens barrel (10), and the minimum radius d10m of the image side of the objective lens barrel (10): 2.6 < Dn / (D10m - d10m) < 8.
5.
2. The lens according to claim 1, characterized in that: At least one of the first lens (21) and the nth lens (22) is adhesively bonded to the objective lens barrel (10).
3. The lens according to claim 1, characterized in that: The following is satisfied between the maximum radius D10m of the image side of the objective lens barrel (10) and the minimum radius d10m of the image side of the objective lens barrel (10): 0.4 < D10m - d10m < 1.
3.
4. The lens according to claim 1, characterized in that: The following is satisfied between the maximum effective radius D1 of the object side of the first lens (21) and the maximum effective radius Dn of the nth lens (22): 0.9 < D1 / Dn < 1.
2.
5. The lens according to claim 1, characterized in that: The following is satisfied among the maximum effective radius D1 of the object side of the first lens (21), the maximum radius D10m of the image side of the objective lens barrel (10), and the minimum radius d10m of the image side of the objective lens barrel (10): 3.1 < D1 / (D10m - d10m) < 8.
0.
6. The lens according to any one of claims 1 to 5, characterized in that: The maximum effective radius D1 of the object side of the first lens (21) satisfies: 0 mm < D1 < 4 mm; and / or the maximum effective radius Dn of the nth lens (22) satisfies: 0 mm < Dn < 4.2 mm.
7. The lens according to any one of claims 1 to 5, characterized in that: The objective lens barrel (10) is one or more. When the objective lens barrel (10) is one, the outer peripheral area of the object side of the first lens (21) abuts against the objective lens barrel (10), and the outer peripheral area of the image side of the nth lens (22) is adhesively bonded to the inner wall surface of the objective lens barrel (10); or the outer peripheral area of the object side of the first lens (21) is adhesively bonded to the inner wall surface of the objective lens barrel (10), and the outer peripheral area of the image side of the nth lens (22) abuts against the objective lens barrel (10).
8. The lens according to any one of claims 1 to 5, characterized in that: The objective lens barrel is one or more. When there are multiple objective lens barrels, the multiple objective lens barrels include a first objective lens barrel (40) and a second objective lens barrel (50). The first objective lens barrel (40) is located on the object side of the second objective lens barrel (50). One of the image side end face of the first objective lens barrel (40) and the object side end face of the second objective lens barrel (50) has a boss structure (61), and the other of the image side end face of the first objective lens barrel (40) and the object side end face of the second objective lens barrel (50) has a groove structure (62) that mates with the boss structure (61). The following is satisfied between the axial thickness CP0 of the first objective lens barrel (40) and the axial thickness CP01 of the second objective lens barrel (50): 3.6 < CP0 / CP01 < 0.
5.
9. The lens according to claim 8, characterized in that: The following is satisfied between the axial thickness CP0 of the first objective lens barrel (40) and the axial thickness CP01 of the second objective lens barrel (50): 0 mm < CP0 + CP01 < 5 mm.
10. The lens according to claim 8, characterized in that: The outer peripheral area of the object side surface of the first lens (21) is glued to the inner wall surface of the second lens barrel (50), and the outer peripheral area of the image side surface of the nth lens (22) is in contact with the second lens barrel (50); or The outer peripheral area of the object side surface of the first lens (21) is glued to the inner wall surface of the second lens barrel (50), and the outer peripheral area of the image side surface of the nth lens (22) is glued to the inner wall surface of the second lens barrel (50).