Core adjusting lens

Abstract

The utility model provides a self-aligning lens, which comprises a lower group lens, a first lens and an upper cover cap which are sequentially assembled along the optical axis of the self-aligning lens, the lower group lens comprises a lower group lens barrel and at least one lens accommodated in the lower group lens barrel, the upper cover cap is provided with a convex ring extending towards the lower group lens barrel, and the convex ring is connected with the lower group lens barrel. The first lens is accommodated in the upper cap and is connected with the lower group lens barrel or the lens, the object side surface of the first lens and the upper cap are arranged at an interval, and the inner diameter of the object side end surface of the lower group lens barrel is greater than or equal to the outer diameter of the first lens. According to the utility model, the problem of serious core shift in optical lens assembly in the prior art is solved.

Description

Technical Field

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

[0002] After more than ten years of rapid development, users have increasingly diversified functional requirements for smart terminals represented by smartphones, and the application scenarios of smart terminals are increasing. As the window for smart terminals to connect to the outside world, users have increasingly higher requirements for the resolution of optical lenses. However, in the production process of optical lenses, the performance yield loss caused by the eccentricity of lens assembly has greatly increased the production cost, which has gradually slowed down the development of high-resolution optical lenses.

[0003] That is to say, the optical lens in the prior art has a serious problem of assembly eccentricity. Utility Model Content

[0004] The main purpose of the utility model is to provide a core-adjusting lens to solve the problem of serious core deviation in the assembly of optical lenses in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a core-adjusting lens, which includes a lower group lens, a first lens and an upper cap which are sequentially assembled along the optical axis of the core-adjusting lens, the lower group lens includes a lower group lens barrel and at least one lens accommodated in the lower group lens barrel, the upper cap has a convex ring extending toward the lower group lens barrel, the convex ring is connected to the lower group lens barrel, the first lens is accommodated in the upper cap and connected to the lower group lens barrel or the lens, the object side surface of the first lens is spaced apart from the upper cap, and the inner diameter of the object side end surface of the lower group lens barrel is greater than or equal to the outer diameter of the first lens.

[0006] Furthermore, the inner diameter of the object side end surface of the lower group lens barrel is larger than the outer diameter of the first lens, and the at least one lens closest to the object side of the center-aligning lens is the first lens, and the first lens is bonded to the first lens.

[0007] Further, the inner diameter of the object side end surface of the lower lens group barrel is equal to the outer diameter of the first lens, and the first lens is bonded to the lower lens group barrel.

[0008] Furthermore, the convex ring has a first connecting surface extending perpendicular to the optical axis, and the first connecting surface is bonded to the lower group lens barrel.

[0009] Furthermore, the length a1 of the first connecting surface satisfies: 0.1 mm≤a1≤0.6 mm.

[0010] Furthermore, the convex ring also has a second connection surface located on the object side of the first connection surface and extending in a direction parallel to the optical axis, and the lower group lens barrel has a step surface extending in a direction parallel to the optical axis, and the step surface is bonded or threadedly connected to the second connection surface.

[0011] Furthermore, the length a2 of the second connecting surface satisfies: a2 ≥ 0.08 mm.

[0012] Further, an edge thickness d2 of the first lens and a center thickness T of the first lens satisfy: T / 4≤d2≤T / 2.

[0013] Further, the object side surface of the first lens is spaced from the upper cover cap to form a clearance distance along the optical axis direction, and the clearance distance d1 satisfies: 0.03≤d1≤d2 / 4.

[0014] Furthermore, the image side surface of the first lens has a first bearing surface, the first bearing surface bears on the lower group lens, and the length c1 of the first bearing surface and the outer radius R1 of the first lens satisfy: 0.07≤c1≤R1 / 4.

[0015] Furthermore, the object side surface of the first lens is spaced from the upper cover cap to form a clearance distance along the optical axis, and the clearance distance d1, the edge thickness d2 of the first lens, and the lateral dimension b1 of the adhesive space required for connecting the first lens and the lower group lens satisfy: d1+d2≤b1≤2(d1+d2).

[0016] Furthermore, the object side surface of the first lens is spaced from the upper cover cap to form a clearance distance along the optical axis, and the clearance distance d1, the edge thickness d2 of the first lens, and the longitudinal dimension b2 of the adhesive space required for connecting the first lens and the lower group lens satisfy: d1+d2≤b2≤2(d1+d2).

[0017] Furthermore, the first lens is the one closest to the object side of the core-aligning lens among at least one lens, and the object side surface of the first lens has a second supporting surface, which supports the lower group lens barrel, and the length c2 of the second supporting surface and the outer radius R2 of the first lens satisfy: 0.07≤c2≤R2 / 4.

[0018] By applying the technical solution of the utility model, the core-adjusting lens comprises a lower group lens, a first lens and an upper cap which are sequentially assembled along the optical axis of the core-adjusting lens, the lower group lens comprises a lower group lens barrel and at least one lens accommodated in the lower group lens barrel, the upper cap has a convex ring extending toward the lower group lens barrel, the convex ring is connected to the lower group lens barrel, the first lens is accommodated in the upper cap and connected to the lower group lens barrel or the lens, the object side surface of the first lens is spaced apart from the upper cap, and the inner diameter of the object side end surface of the lower group lens barrel is greater than or equal to the outer diameter of the first lens.

[0019] By setting up the lower group lenses, the first lens and the upper cap which are assembled in sequence, the first lens is the lens closest to the object side of the entire core-tuning lens, laying the foundation for the direction of light and clear imaging in the entire core-tuning lens. At the same time, after the lower group lenses are assembled, the first lens is the last lens assembled in the entire core-tuning lens, realizing the post-assembly and core-tuning functions of the first lens. Combined with the light blocking and protective effects of the upper cap, the performance yield loss caused by the eccentricity or damage of the first lens assembly is avoided, the lens resolution is improved, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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:

[0021] Figure 1 The structure diagram of the core-adjusting lens of the first embodiment of the utility model is shown;

[0022] Figure 2 Shows Figure 1 Schematic diagram of some parameters of the core-adjusting lens;

[0023] Figure 3 The structure diagram of the core-adjusting lens of the second embodiment of the utility model is shown;

[0024] Figure 4 Shows Figure 3 Schematic diagram of some parameters of the core-adjusting lens;

[0025] Figure 5 The structure diagram of the core-adjusting lens of the third embodiment of the present utility model is shown;

[0026] Figure 6 Shows Figure 5 Schematic diagram of some parameters of the core-adjusting lens;

[0027] Figure 7 The structure diagram of the core-adjusting lens of the fourth embodiment of the present utility model is shown;

[0028] Figure 8 Shows Figure 7 Schematic diagram of some parameters of the core-tuning lens.

[0029] The above drawings include the following reference numerals:

[0030] 10. First lens; 11. First supporting surface; 20. Upper cover cap; 21. Convex ring; 211. First connecting surface; 212. Second connecting surface; 30. Lower lens group; 31. First lens; 311. Second supporting surface; 32. Lower lens group; 321. Step surface. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] In order to solve the problem of serious center deviation in the assembly of optical lenses in the prior art, the utility model provides a center-adjusting lens.

[0035] like Figures 1 to 8 As shown, the centering lens includes a lower group lens 30, a first lens 10 and an upper cap 20 which are sequentially assembled along the optical axis of the centering lens. The lower group lens 30 includes a lower group lens barrel 32 and at least one lens accommodated in the lower group lens barrel 32. The upper cap 20 has a convex ring 21 extending toward the lower group lens barrel 32, and the convex ring 21 is connected to the lower group lens barrel 32. The first lens 10 is accommodated in the upper cap 20 and connected to the lower group lens barrel 32 or the lens. The object side surface of the first lens 10 is spaced apart from the upper cap 20, and the inner diameter of the object side end surface of the lower group lens barrel 32 is greater than or equal to the outer diameter of the first lens 10.

[0036] By arranging the lower lens group 30, the first lens 10 and the upper cap 20 which are assembled in sequence, the first lens 10 is not only the lens closest to the object side of the entire core-adjusting lens, but also lays a foundation for the direction of light and clear imaging in the entire core-adjusting lens. Meanwhile, after the lower lens group 30 is assembled, the first lens 10 is the last lens assembled in the entire core-adjusting lens, thus realizing the post-assembly and core-adjusting functions of the first lens 10. Combined with the light blocking and protective functions of the upper cap 20, the performance yield loss caused by the deflection or damage of the first lens 10 during assembly is avoided, thereby improving the lens resolution and reducing the production cost.

[0037] Since the inner diameter of the object-side end surface of the lower lens group barrel 32 is greater than or equal to the outer diameter of the first lens 10 , the connection between the first lens 10 and the lower lens group can be divided into two implementation modes.

[0038] In the first case, the inner diameter of the object side end face of the lower lens group barrel 32 is larger than the outer diameter of the first lens 10, and the first lens 31 is the closest to the object side of the core-aligned lens in at least one lens, and the first lens 10 is bonded to the first lens 31. When the interval between the lower lens group barrel 32 and the first lens 10 is large, since the first lens 31 already has a stable support in the lower lens group, the first lens 10 is fixed to the first lens 31, and the radial and axial directions of the first lens 10 can ensure the stability of the assembly, and the waste of glue caused by excessive glue can also be avoided.

[0039] In the second case, the inner diameter of the object side end surface of the lower lens group barrel 32 is equal to the outer diameter of the first lens 10, and the first lens 10 is bonded to the lower lens group barrel 32. At this time, the outer diameter surface of the first lens 10 can be supported on the lower lens group barrel 32, thereby bonding the first lens 10 to the lower lens group barrel 32, and the first lens 10 can also be ensured to be assembled stably.

[0040] Specifically, the convex ring 21 has a first connection surface 211 extending perpendicular to the optical axis, and the first connection surface 211 is bonded to the lower lens barrel 32 , so that the upper cover cap 20 can be stably connected to the lower lens barrel 32 in the axial direction.

[0041] Specifically, the length a1 of the first connecting surface 211 satisfies: 0.1mm≤a1≤0.6mm, ensuring that there is enough gluing range between the upper cover cap 20 and the lower group lens barrel 32, thereby improving the reliability of the core-adjusting lens. At the same time, it prevents the upper cover cap 20 from tilting due to uneven gluing due to the bonding size being too long, thereby preventing the entrance pupil position from changing, thereby avoiding affecting the system performance.

[0042] Specifically, the convex ring 21 also has a second connecting surface 212 located on the object side of the first connecting surface 211 and extending in a direction parallel to the optical axis, and the lower group lens barrel 32 has a step surface 321 extending in a direction parallel to the optical axis. In this way, a positional relationship of the convex ring 21 and the lower group lens barrel 32 can be formed for buckling. The step surface 321 is further bonded or threadedly connected to the second connecting surface 212, which can reduce the system reliability risk.

[0043] Specifically, the length a2 of the second connecting surface 212 satisfies: a2 ≥ 0.08 mm, so as to ensure sufficient effective fastening between the upper cover cap 20 and the lower lens barrel 32 and improve the reliability of the core-adjusting lens.

[0044] Specifically, the edge thickness d2 of the first lens 10 satisfies the relationship T of the center thickness T of the first lens 10 : T / 4≤d2≤T / 2, thereby ensuring the strength of the first lens 10 and preventing the dispensing process from having too much influence on the surface shape of the first lens 10 and affecting the overall performance.

[0045] Specifically, the object side surface of the first lens 10 is spaced from the upper cover cap 20 to form a clearance distance along the optical axis, and the clearance distance d1 satisfies: 0.03≤d1≤d2 / 4, thereby preventing the upper cover cap 20 from interfering with the first lens 10 due to assembly errors and avoiding internal dust due to excessive clearance distance.

[0046] Specifically, the image side surface of the first lens 10 has a first supporting surface 11, and the first supporting surface 11 is supported on the lower group lens. The length c1 of the first supporting surface and the outer radius R1 of the first lens satisfy: 0.07≤c1≤R1 / 4, ensuring that there is sufficient support between the first lens 10 and the lower group lens, reducing the assembly risk, and avoiding assembly eccentricity and tilt of the first lens 10 due to excessive supporting length and inability to ensure flatness, thereby avoiding affecting the performance of the first lens 10 and the reliability of the core-adjusting lens.

[0047] Specifically, the object side surface of the first lens 10 is spaced from the upper cover cap 20 to form a clearance distance along the optical axis direction, and the clearance distance d1, the edge thickness d2 of the first lens 10, and the lateral dimension b1 of the adhesive space required for connecting the first lens 10 with the lower group lens satisfy: d1+d2≤b1≤2(d1+d2), thereby ensuring that there is sufficient adhesive dispensing space between the first lens 10 and the lower group lens in the axial direction, ensuring that the first lens 10 and the lower group lens can be reliably bonded, reducing the reliability risk of the core-aligning lens, and improving the reliability of the adhesive dispensing process.

[0048] It should be noted that the transverse dimension b1 of the adhesive space is the maximum axial distance between the object side surface of the first lens 10 and the object side end of the lower lens barrel 32 at the minimum inner diameter.

[0049] Specifically, the object side surface of the first lens 10 is spaced from the upper cover cap 20 to form a clearance distance along the optical axis direction, and the clearance distance d1, the edge thickness d2 of the first lens 10, and the longitudinal dimension b2 of the adhesive space required for connecting the first lens 10 with the lower group lens satisfy: d1+d2≤b2≤2(d1+d2), ensuring that there is sufficient radial glue spotting space between the first lens 10 and the lower group lens, ensuring that the first lens 10 and the lower group lens can be reliably bonded, reducing the reliability risk of the core-aligning lens, and improving the reliability of the glue spotting process.

[0050] It should be noted that the longitudinal dimension b2 of the adhesive space is the maximum distance between the object side surface of the first lens 10 and the object side end surface of the lower lens barrel 32 in the direction perpendicular to the optical axis.

[0051] Specifically, the first lens 31 is closest to the object side of the core-adjusting lens among at least one lens. The object side surface of the first lens 31 has a second supporting surface 311. The second supporting surface 311 supports the lower group lens barrel 32. The length c2 of the second supporting surface 311 and the outer radius R2 of the first lens 31 satisfy: 0.07≤c2≤R2 / 4, ensuring that there is sufficient support between the second supporting surface 311 and the lower group lens barrel 32, reducing the assembly risk, and avoiding assembly eccentricity and tilt of the first lens 31 due to excessive supporting length and inability to ensure flatness, thereby avoiding affecting the performance of the first lens 31 and the reliability of the core-adjusting lens.

[0052] Optionally, the glue used in the above-mentioned dispensing is a commonly used glue in the optical lens industry, which can be a thermosetting glue or a photosensitive glue. No special glue is required, and it has high feasibility and a wide range of applications.

[0053] Optionally, the first lens 10 can be made of glass or plastic, and is suitable for glass or plastic lenses commonly used in the lens industry, with a wide range of applications and high feasibility.

[0054] Embodiment 1

[0055] like Figure 1 and Figure 2 As shown, the inner diameter of the object side end surface of the lower group lens barrel 32 in the center-aligning lens is larger than the outer diameter of the first lens 10, the first lens 10 is bonded to the first lens 31, and the step surface 321 is bonded to the second connecting surface 212. Table 1 below shows some parameters of the center-aligning lens of this embodiment, all in mm.

[0056] Example / Parameters R1 R2 T a1 a2 b1 b2 c1 c2 d1 d2 Embodiment 1 2.10 2.65 0.825 0.316 0.135 0.389 0.435 0.119 0.19 0.04 0.215

[0057] Table 1

[0058] Embodiment 2

[0059] like Figure 3 and Figure 4 The difference from the first embodiment is that the values ​​of some parameters are different. Table 2 below shows some parameters of the core-aligning lens of this embodiment.

[0060] Example / Parameters R1 R2 T a1 a2 b1 b2 c1 c2 d1 d2 Embodiment 2 1.9 2.65 0.825 0.316 0.185 0.389 0.609 0.179 0.308 0.04 0.229

[0061] Table 2

[0062] Embodiment 3

[0063] like Figure 5 and Figure 6 As shown, the difference from the first embodiment is that the inner diameter of the object side end surface of the lower lens group barrel 32 is equal to the outer diameter of the first lens 10, and the first lens 10 is bonded to the lower lens group barrel 32. Table 3 below shows some parameters of the center-aligning lens of this embodiment.

[0064]

[0065]

[0066] Table 3

[0067] Embodiment 4

[0068] like Figure 7 and Figure 8 As shown, the difference from the third embodiment is that the values ​​of some parameters are different, and the step surface 321 is threadedly connected to the second connection surface 212. Table 4 below shows some parameters of the core-aligning lens of this embodiment.

[0069] Example / Parameters R1 R2 T a1 a2 b1 b2 c1 c2 d1 d2 Embodiment 4 2.19 2.65 0.825 0.350 0.25 0.362 0.371 0.342 0.289 0.04 0.297

[0070] Table 4

[0071] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0072] 1. By sequentially arranging the lower lens group 30, the first lens 10 and the upper cap 20, the first lens 10 is the lens closest to the object side of the entire core-aligned lens, laying a foundation for the direction of light in the entire core-aligned lens and clear imaging;

[0073] 2. After the lower lens group 30 is assembled, the first lens 10 is the last lens assembled in the entire core-aligning lens, thus realizing the post-assembly and core-aligning functions of the first lens 10;

[0074] 3. The post-assembly and core adjustment of the first lens 10 combined with the light blocking and protection function of the upper cap 20 avoids the performance yield loss caused by the deflection or damage of the first lens 10 during assembly, improves the lens resolution, and reduces the production cost.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 core-adjusting lens, characterized in that: The center-adjusting lens comprises a lower group lens (30), a first lens (10) and an upper cap (20) which are sequentially assembled along the optical axis of the center-adjusting lens; the lower group lens (30) comprises a lower group lens barrel (32) and at least one lens contained in the lower group lens barrel (32); the upper cap (20) has a convex ring (21) extending toward the lower group lens barrel (32); the convex ring (21) is connected to the lower group lens barrel (32); the first lens (10) is contained in the upper cap (20) and is connected to the lower group lens barrel (32) or the lens; the object side surface of the first lens (10) is spaced from the upper cap (20); the inner diameter of the object side end surface of the lower group lens barrel (32) is greater than or equal to the outer diameter of the first lens (10).

2. The core-aligning lens according to claim 1, characterized in that: The inner diameter of the object side end surface of the lower lens group barrel (32) is greater than the outer diameter of the first lens (10); the first lens (31) is the closest to the object side of the center-aligning lens among the at least one lens; and the first lens (10) is bonded to the first lens (31).

3. The core-aligning lens according to claim 1, characterized in that: The inner diameter of the object side end surface of the lower lens group barrel (32) is equal to the outer diameter of the first lens (10), and the first lens (10) is bonded to the lower lens group barrel (32).

4. The core-aligning lens according to claim 1, characterized in that: The convex ring (21) has a first connecting surface (211) extending perpendicularly to the optical axis, and the first connecting surface (211) is bonded to the lower group lens barrel (32).

5. The core-aligning lens according to claim 4, characterized in that: The length a1 of the first connecting surface (211) satisfies: 0.1 mm≤a1≤0.6 mm.

6. The core-aligning lens according to claim 4, characterized in that: The convex ring (21) also has a second connection surface (212) located on the object side of the first connection surface (211) and extending in a direction parallel to the optical axis, and the lower group lens barrel (32) has a step surface (321) extending in a direction parallel to the optical axis, and the step surface (321) is bonded or threadedly connected to the second connection surface (212).

7. The core-aligning lens according to claim 6, characterized in that: The length a2 of the second connecting surface (212) satisfies: a2≥0.08 mm.

8. The core-aligning lens according to claim 1, characterized in that: The edge thickness d2 of the first lens (10) and the center thickness T of the first lens (10) satisfy the following relationship: T / 4≤d2≤T / 2.

9. The core-aligning lens according to claim 1, characterized in that: The object side surface of the first lens (10) and the upper cover cap (20) are spaced apart to form a clearance distance along the optical axis direction, and the clearance distance d1 satisfies: 0.03≤d1≤d2 / 4.

10. The core-aligning lens according to claim 1, characterized in that: The image side surface of the first lens (10) has a first supporting surface (11), the first supporting surface (11) is supported on the lower group lens (30), and the length c1 of the first supporting surface (11) and the outer radius R1 of the first lens (10) satisfy the following relationship: 0.07≤c1≤R1 / 4.

11. The core-adjustable lens according to any one of claims 1 to 10, characterized in that: The object side surface of the first lens (10) and the upper cover cap (20) are spaced apart to form a clearance distance along the optical axis direction, and the clearance distance d1, the edge thickness d2 of the first lens (10), and the transverse dimension b1 of the adhesive space required for connecting the first lens (10) and the lower lens group (30) satisfy the following conditions: d1+d2≤b1≤2(d1+d2).

12. The core-aligning lens according to any one of claims 1 to 10, characterized in that: The object side surface of the first lens (10) is spaced from the upper cover cap (20) to form a clearance distance along the optical axis direction, and the clearance distance d1, the edge thickness d2 of the first lens (10), and the longitudinal dimension b2 of the adhesive space required for connecting the first lens (10) and the lower lens group (30) satisfy the following conditions: d1+d2≤b2≤2(d1+d2).

13. The core-aligning lens according to any one of claims 1 to 10, characterized in that: The first lens (31) is the lens closest to the object side of the center-aligning lens among the at least one lens. The object side surface of the first lens (31) has a second supporting surface (311). The second supporting surface (311) supports the lower lens barrel (32). The length c2 of the second supporting surface (311) and the outer radius R2 of the first lens (31) satisfy the following relationship: 0.07≤c2≤R2 / 4.

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