Trimming lens and optical lens with same
By designing the cogging structure on the edge-cut lens of the optical lens, the problem of small-volume optical lens improving stray light difficulty is solved, and higher imaging quality and smaller volume are achieved.
Patent Information
- Application Number
- CN202421352406.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-13
AI Technical Summary
While pursuing small volumes, existing optical lenses are difficult to effectively improve stray light, affecting imaging quality.
A slit lens is designed that introduces a cogging structure on the slit surface, and by providing periodically arranged cogging structures on the first and second slit surfaces, a plurality of groove spaces are added to disperse stray light and reduce its energy intensity.
By introducing a cogging structure, stray light can be effectively dispersed and disrupted, reduced its intensity, improved imaging quality, and at the same time, limited assembly space is adapted to reduce the footage of the lens.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical imaging devices, and more particularly, to a trimmed lens and an optical lens having the same. Background Art
[0002] In recent years, the trend of thinning smart products has become increasingly obvious, and the demand for lenses is also getting higher and higher. While ensuring the imaging quality, the volume is reduced as much as possible. Stray light is inevitably introduced in the lens mechanism design, reducing the photo-taking quality. As the space for the optical system is reduced, the adjustment space for the edge mechanism is limited. In order to adapt to a smaller assembly space, the method of trimming the lens is often used. However, light is easily reflected intensively at the trimmed edge, generating stray light, which seriously affects the imaging quality of the lens.
[0003] That is to say, in the prior art, it is difficult to balance the small volume and the reduction of stray light in the optical lens. Summary of the Utility Model
[0004] The main object of the present utility model is to provide a trimmed lens and an optical lens having the same, so as to solve the problem in the prior art that it is difficult to balance the small volume and the reduction of stray light in the optical lens.
[0005] To achieve the above object, according to one aspect of the present utility model, there is provided a trimmed lens, including a first surface with refractive power, a second surface with refractive power, and an outer ring surface connecting the first surface and the second surface. There is at least one trimmed surface on the outer ring surface. The trimmed surface includes a first inclined surface and a second inclined surface arranged along the central axis of the trimmed lens. Tooth groove structures are arranged periodically on the surfaces of the first inclined surface and the second inclined surface along the extending direction of the first inclined surface or the second inclined surface. The tooth groove structure has a tooth top with the maximum distance from the central axis of the trimmed lens and a tooth valley with the minimum distance from the central axis of the trimmed lens. Wherein, the included angle r1 between the first inclined surface and the central axis of the trimmed lens and the included angle r2 between the second inclined surface and the central axis of the trimmed lens satisfy: 1.3 < r1 / r2 < 2.7, and both the included angle r1 and the included angle r2 are less than or equal to 10°; the tooth top pitch a, the pitch b between the tooth top and the tooth valley, and the included angle θ of the tooth valley between adjacent two tooth groove structures satisfy: 0.05 mm ≤ (a - b) * tanθ < 0.18 mm.
[0006] Furthermore, the maximum value rmax of the included angles r1 and r2 and the included angle θ of the tooth valley satisfy: 7.50 ≤ θ / rmax ≤ 10.30.
[0007] Further, the first inclined cutting surface is closer to the first surface than the second inclined cutting surface, and the following condition is satisfied between the height T1 of the first inclined cutting surface to the first surface along the central axis of the edge-cut lens and the height T2 of the second inclined cutting surface to the second surface along the central axis of the edge-cut lens: 1.40 ≤ T2 / T1 ≤ 3.00.
[0008] Further, a parting surface is connected between the first inclined cutting surface and the second inclined cutting surface, and the following condition is satisfied between the maximum height H1 of the parting surface to the first surface and the maximum height H2 of the parting surface to the second surface: 0.70 ≤ H1 / H2 ≤ 1.20.
[0009] Further, the following condition is satisfied between the central thickness CT of the edge-cut lens on the central axis of the edge-cut lens and the minimum width D1 of the edge-cut lens in the direction perpendicular to the central axis of the edge-cut lens: 2.70 ≤ D1 / CT ≤ 3.00.
[0010] Further, the first inclined cutting surface is closer to the first surface than the second inclined cutting surface, and the following condition is satisfied among the height T1 of the first inclined cutting surface to the first surface along the central axis of the edge-cut lens, the height T2 of the second inclined cutting surface to the second surface along the central axis of the edge-cut lens, the angle r1 between the first inclined cutting surface and the central axis of the edge-cut lens, and the angle r2 between the second inclined cutting surface and the central axis of the edge-cut lens: 1.00 < T2*TAN(r2) / (T1*TAN(r1)) < 1.60.
[0011] Further, an ink coating layer is provided on the edge-cut surface, and the following condition is satisfied between the tooth top pitch a of two adjacent tooth groove structures and the pitch b between the tooth top and the tooth valley: 1.40 ≤ a / b ≤ 2.50.
[0012] Further, the following conditions are satisfied between the length L1 of the first inclined cutting surface and the tooth top pitch a of two adjacent tooth groove structures: 4.0 < L1 / a < 6.2, and between the length L1 of the first inclined cutting surface and the pitch b between the tooth top and the tooth valley: 6.0 < L1 / b < 13.1.
[0013] Further, the following condition is satisfied between the length L2 of the second inclined cutting surface and the tooth top pitch a of two adjacent tooth groove structures: 8.5 < L2 / a < 13.0.
[0014] According to another aspect of the present invention, an optical lens is provided, and the optical lens includes the above-mentioned edge-cut lens.
[0015] Applying the technical solution of the present utility model, the edge-cut lens includes a first surface with refractive power, a second surface with refractive power, and an outer ring surface connecting the first surface and the second surface. There is at least one edge-cut surface on the outer ring surface. The edge-cut surface includes a first inclined surface and a second inclined surface arranged along the central axis of the edge-cut lens. Tooth groove structures are arranged periodically along the extension direction of the first inclined surface or the second inclined surface on the surfaces of the first inclined surface and the second inclined surface. The tooth groove structure has a tooth crest with the maximum distance from the central axis of the edge-cut lens and a tooth valley with the minimum distance from the central axis of the edge-cut lens. Among them, the included angle r1 between the first inclined surface and the central axis of the edge-cut lens and the included angle r2 between the second inclined surface and the central axis of the edge-cut lens satisfy: 1.3 < r1 / r2 < 2.7, and both the included angle r1 and the included angle r2 are less than or equal to 10°; the tooth crest pitch a, the pitch b between the tooth crest and the tooth valley, and the included angle θ of the tooth valley between adjacent two tooth groove structures satisfy: 0.05 mm ≤ (a - b) * tanθ < 0.18 mm.
[0016] This application provides an edge-cut lens. On the premise of not affecting the passage of imaging light and ensuring that the first surface and the second surface have sufficient light-transmitting areas, tooth groove structures are introduced on the edge-cut surface to improve stray light, that is, multiple periodically arranged groove spaces are added on the plane. After the stray light enters the groove space with a certain depth, it will undergo multiple diffuse reflections, thus scattering the light path and reducing the energy intensity, achieving the effect of improving stray light. The design of the tooth groove structure has certain requirements for the adapted edge-cut lens. There are a first inclined surface and a second inclined surface that extend obliquely relative to the central axis of the edge-cut lens on the edge-cut surface. The inclination angles of the first inclined surface and the second inclined surface satisfy that r1 / r2 is within a reasonable range. While meeting the requirements of processing and forming, the inclination degrees of the first inclined surface and the second inclined surface are controlled. When the light is incident on the edge-cut surface, as much as possible of it can be dissipated in the form of diffuse reflection, achieving the purpose of absorbing more stray light, rather than directly reflecting the light out of the edge-cut surface to generate more stray light. At the same time, the height, width of the tooth groove structure, and the included angle between adjacent tooth groove structures are limited, and (a - b) * tanθ is controlled within a reasonable range, which can effectively disperse and disrupt the stray light in the tooth groove structure, reduce the intensity of the stray light, and improve the imaging quality. At the same time, the tooth groove structure can also be an effective prerequisite for inking on the edge-cut surface, enabling a certain amount of ink to remain in the tooth groove structure without overflowing, avoiding the difficulty of ink adsorption on the smooth surface of the lens and being unable to absorb stray light, improving the absorption and decomposition effect of stray light, and greatly improving the imaging quality of the lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:
[0018] Figure 1 A schematic structural diagram of a trimmed lens of an optional embodiment of the utility model is shown;
[0019] Figure 2 A schematic diagram showing parameters of a trimmed lens of a selected embodiment of the utility model is shown;
[0020] Figure 3 A schematic diagram showing the tooth groove structure parameters of a slicing lens according to the first embodiment of the utility model is shown;
[0021] Figure 4 Shows Figure 3 Schematic diagram of the structure of the slice lens in FIG.
[0022] Figure 5 A schematic diagram of the tooth groove structure of a slicing lens in the second embodiment of the utility model is shown;
[0023] Figure 6 Shows Figure 5 Schematic diagram of the structure of the slice lens in FIG.
[0024] Figure 7 A schematic diagram of the tooth groove structure of a slicing lens in the third embodiment of the present utility model is shown;
[0025] Figure 8 Shows Figure 7 Schematic diagram of the structure of the slice lens in FIG.
[0026] Fig. 9 A schematic diagram of the tooth groove structure of a slicing lens in the fourth embodiment of the utility model is shown;
[0027] Fig.10 Shows Fig. 9 Schematic diagram of the structure of the slice lens in FIG.
[0028] Fig.11 A schematic diagram of the tooth groove structure of a slicing lens in Embodiment 5 of the present utility model is shown;
[0029] Fig.12 Shows Fig.11 Schematic diagram of the structure of the slice lens.
[0030] The above drawings include the following reference numerals:
[0031] 10. First surface; 20. Second surface; 30. Outer annular surface; 31. Trimming surface; 311. First chamfered surface; 312. Second chamfered surface; 313. Parting surface; 40. Tooth groove structure; 41. Tooth top; 42. Tooth valley. DETAILED DESCRIPTION
[0032] 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.
[0033] 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.
[0034] 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.
[0035] It should be noted that in this specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.
[0036] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are for illustration only and are not drawn strictly to scale.
[0037] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the object side is called the object side surface of the lens, and the surface of each lens close to the image side is called the image side surface of the lens. The judgment of the surface shape in the paraxial region can be based on the judgment method of the general knowledge in this field, and the positive and negative R value (R refers to the radius of curvature of the paraxial region, usually refers to the R value on the lens database (lens data) in the optical software) is used to judge the concave and convex. For the object side, when the R value is positive, it is judged as a convex surface, and when the R value is negative, it is judged as a concave surface; for the image side, when the R value is positive, it is judged as a concave surface, and when the R value is negative, it is judged as a convex surface.
[0038] In order to solve the problem in the prior art that it is difficult to balance the small size of an optical lens and the improvement of stray light, the utility model provides a trimmed lens and an optical lens having the same.
[0039] like Figures 1 to 12As shown in the figure, the edged lens includes a first surface 10 with refractive power, a second surface 20 with refractive power, and an outer ring surface 30 connecting the first surface 10 and the second surface 20. There is at least one edged surface 31 on the outer ring surface 30. The edged surface 31 includes a first inclined surface 311 and a second inclined surface 312 arranged along the central axis of the edged lens. On the surfaces of the first inclined surface 311 and the second inclined surface 312, there are both grooved structures 40 arranged periodically along the extension direction of the first inclined surface 311 or the second inclined surface 312. The grooved structure 40 has a tooth top 41 with the maximum distance from the central axis of the edged lens and a tooth valley 42 with the minimum distance from the central axis of the edged lens. Among them, both the included angle r1 and the included angle r2 are less than or equal to 10°. The included angle r1 between the first inclined surface 311 and the central axis of the edged lens and the included angle r2 between the second inclined surface 312 and the central axis of the edged lens satisfy: 1.3 < r1 / r2 < 2.7; the distance a between the tooth tops 41 of two adjacent grooved structures 40, the distance b between the tooth top 41 and the tooth valley 42, and the included angle θ of the tooth valley 42 satisfy: 0.05 mm ≤ (a - b)*tanθ < 0.18 mm.
[0040] The present application provides an edged lens. On the premise of not affecting the passage of imaging light and ensuring that the first surface 10 and the second surface 20 have sufficient light-transmitting areas, a grooved structure 40 is introduced on the edged surface 31 to improve stray light, that is, multiple periodically arranged groove spaces are added on the plane. After the stray light enters the groove space with a certain depth, it will undergo multiple diffuse reflections, thus scattering the light path and reducing the energy intensity, achieving the effect of improving stray light. The design of the grooved structure 40 has certain requirements for the adapted edged lens. On the edged surface 31, there are a first inclined surface 311 and a second inclined surface 312 that extend obliquely relative to the central axis of the edged lens. The inclination angles of the first inclined surface 311 and the second inclined surface 312 satisfy that r1 / r2 is within a reasonable range. While meeting the requirements of processing and forming, the inclination degrees of the first inclined surface 311 and the second inclined surface 312 are controlled. When the light is incident on the edged surface 31, as much as possible of it can be dissipated in the form of diffuse reflection, achieving the purpose of absorbing more stray light, rather than directly reflecting the light out of the edged surface 31 to generate more stray light. At the same time, the height, width of the grooved structure 40, and the included angle between adjacent grooved structures 40 are limited, and (a - b)*tanθ is controlled within a reasonable range, which can effectively disperse and disrupt the stray light in the grooved structure 40, reduce the intensity of the stray light, and improve the imaging quality. At the same time, the grooved structure 40 can also be an effective prerequisite for applying ink on the edged surface 31, enabling a certain amount of ink to remain in the grooved structure 40 without overflowing, avoiding the difficulty of ink adsorption on the smooth surface of the lens and the inability to absorb stray light, improving the absorption and decomposition effect of stray light, and greatly improving the imaging quality of the lens.
[0041] As Figures 1 to 12As shown, the angle r1 and the maximum value rmax of the angle r2, and the angle θ of the tooth valley 42 satisfy: 7.50≤θ / rmax≤10.30. If the value of θ / rmax is too small, the tooth groove structure 40 will be difficult to process and shape, and the ability of the first bevel 311 and the second bevel 312 to eliminate stray light will be reduced; if the value of θ / rmax is too large, the possibility of light being directly reflected is also high, and the control of stray light is weakened. In other words, the design of the characteristic angle of the tooth valley 42 of the tooth groove structure 40 needs to simultaneously consider the slope of the attached bevel. By selecting the angle θ of the tooth valley 42 according to the size of the angle r1 and the angle r2 through the above conditional formula, the tooth groove structure 40 can be reasonably arranged, which is convenient for processing and forming, and a certain stray light improvement function can be simultaneously guaranteed.
[0042] like Figures 1 to 12 As shown, the first chamfered surface 311 is closer to the first surface 10 than the second chamfered surface 312, and the height T1 from the first chamfered surface 311 to the first surface 10 along the central axis of the edged lens and the height T2 from the second chamfered surface 312 to the second surface 20 along the central axis of the edged lens satisfy: 1.40≤T2 / T1≤3.00. By dividing the edged surface 31 of the edged lens into two parts, the first chamfered surface 311 and the second chamfered surface 312 exist in the edged direction correspondingly, and T2 / T1 is controlled within a reasonable range. The heights of the two chamfered surfaces to their respective edge surfaces need to satisfy the above conditional formula to avoid unreasonable distribution of the movable side and fixed side mold loads due to excessive or small differences, thereby increasing the difficulty of molding.
[0043] like Figures 1 to 12 As shown, a parting surface 313 is connected between the first chamfered surface 311 and the second chamfered surface 312, and the maximum height H1 from the parting surface 313 to the first surface 10 and the maximum height H2 from the parting surface 313 to the second surface 20 satisfy: 0.70≤H1 / H2≤1.20. In other words, the trimmed lens is divided into two parts by the parting surface 313, and the parting surface 313 satisfies H1 / H2 within a reasonable range, avoiding poor material injection molding caused by unreasonable distribution of molds on both sides, reducing molding difficulty, and ensuring the processability of the trimmed lens.
[0044] like Figures 1 to 12 As shown, the center thickness CT of the edged lens on the center axis of the edged lens and the minimum width D1 of the edged lens in a direction perpendicular to the center axis of the edged lens satisfy: 2.70≤D1 / CT≤3.00. In order to consider the limited assembly space, the edged lens has at least one edged surface 31. By controlling D1 / CT within a reasonable range, a reasonable center-to-thickness ratio can ensure the strength of the edged lens while ensuring the optical performance, prevent abnormal deformation, and improve the assembly performance and environmental reliability of the assembled lens.
[0045] like Figures 1 to 12As shown, the first bevel surface 311 is closer to the first surface 10 than the second bevel surface 312. The height T1 from the first bevel surface 311 to the first surface 10 along the central axis of the edged lens, the height T2 from the second bevel surface 312 to the second surface 20 along the central axis of the edged lens, the angle r1 between the first bevel surface 311 and the central axis of the edged lens, and the angle r2 between the second bevel surface 312 and the central axis of the edged lens satisfy: 1.00 < T2 * TAN(r2) / (T1 * TAN(r1)) < 1.60. The bevel angles and cut-off heights of the first bevel surface 311 and the second bevel surface 312 satisfy that T2 * TAN(r2) / (T1 * TAN(r1)) is within a reasonable range, ensuring that the first bevel surface 311 is slightly larger than the second bevel surface 312. Since more stray light converges on the first bevel surface 311, widening the first bevel surface 311 is beneficial for better arranging the tooth groove structure 40 and improving the stray light improvement effect.
[0046] As Figures 1 to 12 shown, an ink coating layer is provided on the edged surface 31. The distance a between the tooth tops 41 of two adjacent tooth groove structures 40 and the distance b between the tooth top 41 and the tooth valley 42 satisfy: 1.40 ≤ a / b ≤ 2.50. For lenses with high imaging quality requirements, the tooth groove structure 40 can further improve the stray light improvement effect by adding an ink coating process. The spacing and height of the tooth groove structure 40 can form good structural space for retaining ink by satisfying the above conditional formula, preventing overflow and affecting the assembly performance.
[0047] As Figures 1 to 12 shown, the length L1 of the first bevel surface 311 and the distance a between the tooth tops 41 of two adjacent tooth groove structures 40 satisfy: 4.0 < L1 / a < 6.2. The length L1 of the first bevel surface 311 and the distance b between the tooth top 41 and the tooth valley 42 satisfy: 6.0 < L1 / b < 13.1. The tooth groove structure 40 is characterized by being adapted to the edged lens. Since the first bevel surface 311 has a larger size than the tooth groove structure 40, restricting L1 / a and L1 / b within a reasonable range avoids assembly interference at the first bevel surface 311 and can ensure good improvement of stray light at the same time.
[0048] As Figures 1 to 12 shown, the length L2 of the second bevel surface 312 and the distance a between the tooth tops 41 of two adjacent tooth groove structures 40 satisfy: 8.5 < L2 / a < 13.0. The second bevel surface 312 has a larger size than the tooth groove structure 40. Restricting L2 / a within a reasonable range avoids assembly interference at the second bevel surface 312 and can ensure good improvement of stray light at the same time.
[0049] The utility model also provides an optical lens, which includes the above-mentioned trimmed lens. The trimmed lens can greatly reduce the volume occupied by the optical lens and better adapt to the limited assembly space. At the same time, the optical lens also has a good function of eliminating stray light.
[0050] Embodiment 1
[0051] like Figure 3 to Figure 4 As shown, the edge-cut lens of Example 1 of the present application is described.
[0052] like Figure 3 to Figure 4 As shown, the edged lens includes a first surface 10 with refractive power, a second surface 20 with refractive power, and an outer annular surface 30 connecting the first surface 10 and the second surface 20, the outer annular surface 30 has at least one edged surface 31, the edged surface 31 includes a first beveled surface 311 and a second beveled surface 312 arranged along the central axis of the edged lens, and the surfaces of the first beveled surface 311 and the second beveled surface 312 are provided with tooth groove structures 40 periodically arranged along the extension direction of the first beveled surface 311 or the second beveled surface 312, the tooth groove structure 40 has a tooth top 41 with the largest distance from the central axis of the edged lens and a tooth valley 42 with the smallest distance from the central axis of the edged lens.
[0053] Table 1 below shows the basic structural parameters of the edge-cut lens of Example 1.
[0054] Parameters / Examples 1 r1(°) 8.00 r2(°) 3.00 a(mm) 0.10 b(mm) 0.07 D1 6.70 θ(°) 60.00 CT(mm) 2.40 T1(mm) 0.40 T2(mm) 1.20 L1 0.42 L2 1.19 H1 1.07 H2 1.33
[0055] Table 1
[0056] Table 2 shows the values of the conditional expressions corresponding to the edge-cut lenses of Example 1.
[0057] Conditional / Example 1 r1 / r2 2.67 (ab)*tanθ 0.05 θ / rmax 7.50 T2 / T1 3.00 H1 / H2 0.80 D1 / CT 2.79 T2*TAN(r2) / (T1*TAN(r1)) 1.12 a / b 1.43 L1 / a 4.21 L1 / b 6.02 L2 / a 11.88
[0058] Table 2
[0059] Embodiment 2
[0060] like Figures 5 and 6 As shown, the edge-cut lens of the second embodiment of the present application is described, and the difference from the first embodiment is that the size of the edge-cut lens is different.
[0061] Table 3 below shows the basic structural parameters of the edge-cut lens of Example 2.
[0062] Parameters / Examples 2 r1(°) 6.92 r2(°) 4.23 a(mm) 0.10 b(mm) 0.04 D1 6.75 θ(°) 71.00 CT(mm) 2.43 T1(mm) 0.52 T2(mm) 1.14 L1 0.52 L2 1.14 H1 1.15 H2 1.28
[0063] Table 3
[0064] Table 4 shows the values of the conditional expressions of the edge-cut lens of the second embodiment.
[0065]
[0066]
[0067] Table 4
[0068] Embodiment 3
[0069] like Figures 7 and 8 As shown, the edge-cut lens of embodiment 3 of the present application is described. The difference from embodiment 1 is that the size of the edge-cut lens is different.
[0070] Table 5 below shows the basic structural parameters of the edge-cut lens of Example 3.
[0071] Parameters / Examples 3 r1(°) 7.06 r2(°) 3.91 a(mm) 0.10 b(mm) 0.06 D1 6.75 θ(°) 61.00 CT(mm) 2.49 T1(mm) 0.46 T2(mm) 1.25 L1 0.46 L2 1.26 H1 1.09 H2 1.40
[0072] Table 5
[0073] Table 6 shows the values of the conditional expressions of the edge-cut lens of Example 3.
[0074] Example / Conditional Formula 3 r1 / r2 1.81 (ab)*tanθ 0.07 θ / rmax 8.64 T2 / T1 2.72 H1 / H2 0.78 D1 / CT 2.72 T2*TAN(r2) / (T1*TAN(r1)) 1.50 a / b 1.67 L1 / a 4.64 L1 / b 7.74 L2 / a 12.56
[0075] Table 6
[0076] Embodiment 4
[0077] like Figures 9 and 10 As shown, the edge-cut lens of embodiment 4 of the present application is described. The difference from embodiment 1 is that the size of the edge-cut lens is different.
[0078] Table 7 below shows the basic structural parameters of the edge-cut lens of Example 4.
[0079] Parameters / Examples 4 r1(°) 9.41 r2(°) 5.61 a(mm) 0.10 b(mm) 0.07 D1 6.82 θ(°) 75.30 CT(mm) 2.34 T1(mm) 0.44 T2(mm) 1.12 L1 0.45 L2 1.13 H1 1.07 H2 1.27
[0080] Table 7
[0081] Table 8 shows the values of the conditional formula of the edge-cut lens of Example 4.
[0082] Conditional / Example 4 r1 / r2 1.68 (ab)*tanθ 0.11 θ / rmax 8.00 T2 / T1 2.55 H1 / H2 0.85 D1 / CT 2.92 T2*TAN(r2) / (T1*TAN(r1)) 1.51 a / b 1.43 L1 / a 4.48 L1 / b 6.40 L2 / a 11.27
[0083] Table 8
[0084] Embodiment 5
[0085] like Figure 11 to Figure 12 As shown, the edge-cut lens of Example 5 of the present application is described. The difference from Example 1 is that the size of the edge-cut lens is different.
[0086] Table 9 below shows the basic structure of the edge-cut lens of Example 5.
[0087]
[0088]
[0089] Table 9
[0090] Table 10 shows the values of the conditional expressions of the edge-cut lens of Example 5.
[0091] Conditional / Example 5 r1 / r2 1.37 (ab)*tanθ 0.06 θ / rmax 10.13 T2 / T1 1.46 H1 / H2 1.19 D1 / CT 2.95 T2*TAN(r2) / (T1*TAN(r1)) 1.06 a / b 1.43 L1 / a 6.14 L1 / b 8.76 L2 / a 8.97
[0092] Table 10
[0093] 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.
[0094] 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.
[0095] 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.
[0096] 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 cut-edge lens, characterized in that: The trimmed lens includes a first surface (10) with refractive power, a second surface (20) with refractive power, and an outer ring surface (30) connecting the first surface (10) and the second surface (20). At least one trimmed surface (31) is provided on the outer ring surface (30). The trimmed surface (31) includes a first inclined surface (311) and a second inclined surface (312) arranged along the central axis of the trimmed lens. A tooth groove structure (40) arranged periodically along the extending direction of the first inclined surface (311) or the second inclined surface (312) is provided on the surfaces of the first inclined surface (311) and the second inclined surface (312). The tooth groove structure (40) has a tooth crest (41) with the maximum distance from the central axis of the trimmed lens and a tooth valley (42) with the minimum distance from the central axis of the trimmed lens. Wherein, the following is satisfied between the angle r1 between the first inclined surface (311) and the central axis of the trimmed lens and the angle r2 between the second inclined surface (312) and the central axis of the trimmed lens: 1.3 < r1 / r2 < 2.7, and both the angle r1 and the angle r2 are less than or equal to 10°. The following is satisfied between the pitch a of the tooth crests (41) of two adjacent tooth groove structures (40), the pitch b between the tooth crest (41) and the tooth valley (42), and the angle θ of the tooth valley (42): 0.05 mm ≤ (a - b) * tanθ < 0.18 mm.
2. The edge-cut lens according to claim 1, characterized in that: The following is satisfied between the maximum value rmax of the angle r1 and the angle r2 and the angle θ of the tooth valley (42): 7.50 ≤ θ / rmax ≤ 10.
30.
3. The edge-cut lens according to claim 1, characterized in that: The first inclined surface (311) is closer to the first surface (10) than the second inclined surface (312). The following is satisfied between the height T1 of the first inclined surface (311) to the first surface (10) along the central axis of the trimmed lens and the height T2 of the second inclined surface (312) to the second surface (20) along the central axis of the trimmed lens: 1.40 ≤ T2 / T1 ≤ 3.
00.
4. The edge-cut lens according to claim 1, characterized in that: A parting surface (313) is connected between the first inclined surface (311) and the second inclined surface (312). The following is satisfied between the maximum height H1 of the parting surface (313) to the first surface (10) and the maximum height H2 of the parting surface (313) to the second surface (20): 0.70 ≤ H1 / H2 ≤ 1.
20.
5. The edge-cut lens according to claim 1, characterized in that: The following is satisfied between the central thickness CT of the trimmed lens on the central axis of the trimmed lens and the minimum width D1 of the trimmed lens in the direction perpendicular to the central axis of the trimmed lens: 2.70 ≤ D1 / CT ≤ 3.
00.
6. The edge-cut lens according to claim 1, characterized in that: The first inclined section (311) is closer to the first surface (10) than the second inclined section (312). The following relationships are satisfied among the height T1 from the first inclined section (311) to the first surface (10) along the central axis of the edged lens, the height T2 from the second inclined section (312) to the second surface (20) along the central axis of the edged lens, the angle r1 between the first inclined section (311) and the central axis of the edged lens, and the angle r2 between the second inclined section (312) and the central axis of the edged lens: 1.00 < T2 * TAN(r2) / (T1 * TAN(r1)) < 1.
60.
7. The edge-cut lens according to claim 1, characterized in that: An ink coating layer is provided on the edged surface (31). The following relationship is satisfied between the pitch a of the tooth tops (41) of two adjacent tooth groove structures (40) and the pitch b between the tooth top (41) and the tooth valley (42): 1.40 ≤ a / b ≤ 2.
50.
8. The edge-cut lens according to claim 1, characterized in that: The following relationships are satisfied between the length L1 of the first inclined section (311) and the pitch a of the tooth tops (41) of two adjacent tooth groove structures (40): 4.0 < L1 / a < 6.
2. The following relationships are satisfied between the length L1 of the first inclined section (311) and the pitch b between the tooth top (41) and the tooth valley (42): 6.0 < L1 / b < 13.
1.
9. The edge-cut lens according to claim 1, characterized in that: The following relationship is satisfied between the length L2 of the second inclined section (312) and the pitch a of the tooth tops (41) of two adjacent tooth groove structures (40): 8.5 < L2 / a < 13.
0.
10. An optical lens, characterized in that: The optical lens includes the edged lens according to any one of claims 1-9.