Optical lens and lens

Abstract

The utility model provides an optical lens and a lens, the optical lens comprises a lens barrel and a lens, the lens is located in the lens barrel, and the lens is provided with a lens forming cutting part; the lens barrel and / or the lens are / is provided with an avoiding part which is in a notch form, the width of the avoiding part is larger than or equal to 70% of the effective aperture of the lens, so that an avoiding space is formed between the lens and the lens barrel when the lens is assembled in the lens barrel, and the lens is provided with a continuous bearing part which is not smaller than 200 degrees. Through the arrangement of the avoiding part, the risk of surface type bifurcation of the lens is reduced, and the eccentricity test on the lens is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of optical elements, and in particular to an optical lens and a lens. Background Art

[0002] Optical lenses are widely used in various industries because they can provide real-world image information through visual recognition. For example, in the automotive sector, optical lenses provide reverse imaging and 360-degree panoramic views, enabling active safety and autonomous driving assistance. In the industrial sector, optical lenses enable automated positioning, assembly, and inspection. In the surveillance sector, optical lenses enable facial recognition.

[0003] Plastic lenses are commonly used in optical lenses. During their production, plastic lenses undergo a series of injection molding and cooling processes. However, after cooling, the lens will have a residual protrusion at the feed port. This protrusion usually needs to be removed to solve the problem of the feed port protrusion extending beyond the lens' outer diameter. This removal creates a D-shaped cutout, which can cause the lens to have a bifurcated surface after being assembled into the lens barrel due to uneven force applied along the outer diameter.

[0004] The related art typically addresses the uneven force applied to the lens by adding multiple D-shaped cutouts evenly distributed along the circumference of the lens. However, these multiple D-shaped cutouts result in lower accuracy in lens decentration testing. Therefore, it is difficult for optical lenses to achieve both a low risk of bifurcation and high decentration testing accuracy. Utility Model Content

[0005] The present application provides an optical lens and a lens that can at least solve or partially solve at least one problem or other problems existing in the prior art.

[0006] The present application provides an optical lens, comprising a lens barrel and a lens, wherein the lens is located in the lens barrel and has a lens-molding cutout portion; the lens barrel and / or the lens have an escape portion in the form of a cutout and a width greater than or equal to 70% of the effective aperture of the lens, so that when the lens is assembled in the lens barrel, an escape space is formed between the lens and the lens barrel, and the lens has a continuous supporting portion of not less than 200°.

[0007] According to an exemplary embodiment of the present application, the lens has the avoidance portion, and the line connecting the center point of the avoidance portion and the center of the lens forms a 90° angle with the line connecting the center point of the lens molding cutout portion and the center of the lens.

[0008] According to an exemplary embodiment of the present application, the lens barrel has the avoidance portion, and a line connecting a center point of the avoidance portion and a center of the lens forms a 90° angle with a line connecting a center point of the lens molding cutout portion and the center of the lens.

[0009] According to an exemplary embodiment of the present application, the lens barrel has a plurality of the avoidance portions, and the plurality of avoidance portions and the lens molding cutout portions are evenly distributed along the circumferential direction of the lens.

[0010] According to an exemplary embodiment of the present application, the lens barrel has two avoidance portions, and the line connecting the center points of the avoidance portions and the center of the lens is 120° to the line connecting the center points of the lens molding and cutting portions and the center of the lens; or, the lens barrel has three avoidance portions, and the line connecting the center points of the avoidance portions and the center of the lens is 90° to the line connecting the center points of the adjacent avoidance portions and the center of the lens; or, the lens barrel has four avoidance portions, and the line connecting the center points of the avoidance portions and the center of the lens is 72° to the line connecting the center points of the adjacent avoidance portions and the center of the lens.

[0011] According to an exemplary embodiment of the present application, the avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the lens molding cutout portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is consistent with the distance between the first end and the second end of the lens molding cutout portion.

[0012] According to an exemplary embodiment of the present application, a ratio of a distance between the first end and the second end of the avoidance portion to an outer diameter of the lens is less than or equal to 0.65.

[0013] According to an exemplary embodiment of the present application, the lens is an aspherical lens, the avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is greater than or equal to 70% of the effective aperture of any side surface of the lens.

[0014] According to an exemplary embodiment of the present application, the shape of the cutting edge of the avoidance portion includes a straight line shape, an arc shape, a wave shape or a broken line shape.

[0015] According to an exemplary embodiment of the present application, the effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: (D / 2) / SAG≤2; or, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / (Dmax / 2)≤0.4.

[0016] According to an exemplary embodiment of the present application, the effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: (D / 2) / SAG≤1.2; or, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / (Dmax / 2)≤0.3.

[0017] The present application also provides a lens, which has a lens molding cutout portion and an avoidance portion in the form of a cut and with a width greater than or equal to 70% of the effective aperture of the lens, the line connecting the center point of the avoidance portion and the center of the lens is 90° to the line connecting the center point of the lens molding cutout portion and the center of the lens, and the lens has a continuous supporting portion of not less than 200°.

[0018] According to an exemplary embodiment of the present application, the avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the lens molding cutout portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is consistent with the distance between the first end and the second end of the lens molding cutout portion.

[0019] According to an exemplary embodiment of the present application, a ratio of a distance between the first end and the second end of the avoidance portion to an outer diameter of the lens is less than or equal to 0.65.

[0020] According to an exemplary embodiment of the present application, the lens is an aspherical lens, the avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is greater than or equal to 70% of the effective aperture of the lens.

[0021] According to an exemplary embodiment of the present application, the shape of the cutting edge of the avoidance portion includes a straight line shape, an arc shape, a wave shape or a broken line shape.

[0022] According to an exemplary embodiment of the present application, the effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: (D / 2) / SAG≤2; or, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / (Dmax / 2)≤0.4.

[0023] According to an exemplary embodiment of the present application, the effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: (D / 2) / SAG≤1.2; or, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / (Dmax / 2)≤0.3.

[0024] The optical lens provided in the present application forms an avoidance portion in the form of a cutout on the lens barrel and / or the lens, and the lens has a continuous supporting portion of not less than 200°. The lens does not contact the lens barrel at the lens molding cutout portion and the avoidance portion, which not only reduces the risk of facial bifurcation of the lens, but also improves the accuracy of lens decentration testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which:

[0026] Figure 1 is a schematic structural diagram of a lens according to one embodiment of the present application;

[0027] Figure 2 Schematic diagram of the structure of an optical lens according to one embodiment of the present application;

[0028] Figure 3 Shown Figure 2 A simulation of the measured surface shape of the middle lens;

[0029] Figure 4 is a schematic structural diagram of a lens according to another embodiment of the present application;

[0030] Figure 5 is a schematic structural diagram of a lens according to another embodiment of the present application;

[0031] Figure 6 for Figure 4 Schematic diagram of the decentration test of the lens in FIG.

[0032] Figure 7 is a schematic structural diagram of a lens according to Example 1 of the present application;

[0033] Figure 8 Schematic diagram of the structure of an optical lens according to Example 1 of the present application;

[0034] Figure 9 Shown Figure 7 A simulation of the measured surface shape of the middle lens;

[0035] Figure 10 is a schematic structural diagram of a lens according to Example 2 of the present application;

[0036] Figure 11 1 is a schematic structural diagram of an optical lens according to Example 3 of the present application;

[0037] Figure 12 2 is a schematic structural diagram of another optical lens according to Example 3 of the present application;

[0038] Figure 13 Schematic diagram of the structure of an optical lens according to Example 4 of the present application;

[0039] Figure 14 Schematic diagram of the structure of an optical lens according to Example 5 of the present application;

[0040] Figure 15 Schematic diagram of the structure of an optical lens according to Example 6 of the present application;

[0041] Figure 16 Schematically illustrates the dimensions of the effective aperture D of one side of the lens and the sag SAG of the side of the lens according to an embodiment of the present application;

[0042] Figure 17 The diagram schematically shows the dimensions of the maximum effective aperture Dmax and the center thickness d in the lens according to an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 1-lens barrel; 2-lens; 3-lens forming and cutting portion; 4-avoidance portion; 5-lens fixture. DETAILED DESCRIPTION

[0045] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0046] It should be noted that in this specification, the terms "first", "second", etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below can also be referred to as the second lens.

[0047] It should also be understood that the terms "comprise," "including," "having," "include," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when describing embodiments of the present application, the term "may" is used to mean "one or more embodiments of the present application." Furthermore, the term "exemplary" is intended to refer to an example or illustration.

[0048] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless expressly defined as such herein.

[0049] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0050] See also Figure 1 The lens 2 usually has a lens forming cutout 3, which is used to set the feed port to prevent the residual protrusion of the feed port from exceeding the outer diameter of the lens. Figure 2 Because there is a clearance between the lens 2 and the lens barrel 1 at the lens molding cutout 3, the force on the lens 2 is uneven, resulting in inconsistent changes in the lens surface shape in different directions after the reliability test. This can easily cause the lens surface shape to bifurcate, affecting the uniformity of the optical lens performance. Figure 4-Figure 5 To improve the uniformity of optical lens performance, related technologies typically add a lens molding cutout 3 to the lens 2. Multiple lens molding cutouts 3 are evenly distributed along the circumference of the lens. The lens molding cutouts can be trimming structures formed on the edge of the lens due to the need to remove the feed port after injection molding.

[0051] See also Figure 6 The decentration test requires the use of a lens fixture 5 with a V-shaped slot. To achieve high accuracy in the decentration test, the lens 2 must be rotated more than 180° within the V-shaped slot. Related art techniques add lens molding cutouts 3 to the lens 2. The multiple lens molding cutouts 3 on the lens 2 are rotationally symmetrical, preventing the lens 2 from rotating more than 180° within the V-shaped slot. Consequently, the decentration test accuracy of the lens 2 is low.

[0052] Based on this, see Figure 8 、 Figure 11-Figure 15 The present application provides an optical lens, which includes a lens barrel 1 and a lens 2. The lens 2 is located in the lens barrel 1 and has a lens-molded cutout 3. The lens barrel 1 and / or the lens 2 have a relief portion 4 in the form of a cutout, so that when the lens 2 is assembled into the lens barrel 1, a relief space is formed between the lens 2 and the lens barrel 1. The lens 2 has a continuous supporting portion with an angle of not less than 200 degrees. When the lens is assembled into the lens barrel, the continuous supporting portion of the lens contacts the lens barrel, providing a supporting function. The continuous supporting portion of the lens is a continuous arc-shaped structure at the edge of the lens without a cutout structure.

[0053] The present application forms an avoidance portion 4 in the form of a cutout on the lens barrel 1 and / or the lens 2, and the lens 2 has a continuous supporting portion of not less than 200°. The lens 2 does not contact the lens barrel 1 at the lens molding cutout portion 3 and the avoidance portion 4. This not only reduces the risk of facial bifurcation of the lens 2, but also improves the accuracy of the decentration test of the lens 2.

[0054] For details, see Figure 2 The uneven force on the lens 2 in the lens barrel 1 is mainly reflected in the first direction and the second direction. The first direction (Y-axis direction) is the direction from the center point of the lens molding cutout 3 to the center of the lens, and the second direction (X-axis direction) is perpendicular to the first direction. Figure 3 Shown Figure 2 A simulation of the measured surface shape of the middle lens. Figure 3 The horizontal axis (R axis) depicts the radial position of the lens in the X-axis or Y-axis direction, and the vertical axis (Zd axis) depicts the difference Zd between the measured data and the design data in the Z-axis direction. Figure 3 After the reliability test, the surface shape changes of the lens 2 in the first direction and the second direction are inconsistent, and the degree of surface shape change in the second direction (X-axis direction) is greater than the degree of surface shape change in the first direction (Y-axis direction), which easily causes the surface shape of the lens 2 to bifurcate in the first direction and the second direction.

[0055] In an exemplary embodiment, see Figure 7 or Figure 11 The lens barrel 1 or lens 2 has a relief portion 4, and the line connecting the center point of the relief portion 4 and the center of the lens forms a 90-degree angle with the line connecting the center point of the lens molding cutout portion 3 and the center of the lens. Because the lens 2 does not contact the lens barrel 1 at either the lens molding cutout portion 3 or the relief portion 4, the provision of the relief portion 4 at a location where the lens 2 is subjected to greater force can improve the uniformity of force applied to the lens 2 in the first and second directions, thereby reducing the risk of the lens 2 exhibiting a bifurcation in the first and second directions. Figure 7 The structure diagram of the lens having an avoidance portion is shown. Figure 11 The structure diagram of the lens barrel having an avoidance portion is shown. In the present application, the center of the lens can be the optical center of the lens.

[0056] In an exemplary embodiment, see Figure 13-15 The lens barrel 1 has multiple reliefs 4, which, along with the lens-molding cutouts 3, are evenly distributed along the circumference of the lens 2. Specifically, the angle formed by the center point of a lens-molding cutout 3 and the center point of an adjacent relief 4 at the lens center is equal to the angle formed by the center point of the adjacent relief 4 at the lens center. Because the lens does not contact the lens barrel at either the lens-molding cutouts or the reliefs, the reliefs improve force uniformity in different directions, thereby reducing the risk of bifurcation.

[0057] For example, the lens has a lens forming cutout portion, the lens barrel has n avoidance portions, where n is an integer greater than 1, and the angle formed by the midpoint of the lens forming cutout portion and the midpoint of the adjacent avoidance portion at the center of the lens, as well as the angle formed by the midpoint of the adjacent avoidance portion at the center of the lens, are both 360° / (n+1). For example, see Figure 13 The lens barrel 1 may have two avoidance portions 4, and the line connecting the center point of the avoidance portion 4 and the center of the lens is 120 degrees to the line connecting the center point of the lens molding cutout portion 3 and the center of the lens. Figure 14 The lens barrel 1 may have three avoidance portions 4. The line connecting the center point of the avoidance portion 4 adjacent to the lens molding cutout portion 3 and the center of the lens is at 90 degrees to the line connecting the center point of the lens molding cutout portion 3 and the center of the lens. The line connecting the center point of the avoidance portion 4 and the center of the lens is at 90 degrees to the line connecting the center point of the adjacent avoidance portion 4 and the center of the lens. Figure 15 The lens barrel 1 may have four relief portions 4. The line connecting the center point of the relief portion 4 adjacent to the lens molding cutout portion 3 and the lens center is at a 72° angle to the line connecting the center point of the lens molding cutout portion 3 and the lens center. The line connecting the center point of the relief portion 4 and the lens center is at a 72° angle to the line connecting the center point of the adjacent relief portion 4 and the lens center. The number of relief portions 4 in the lens barrel 1 includes, but is not limited to, 1, 2, 3, or 4.

[0058] The relief portion 4 has a first end and a second end opposite to each other in the circumferential direction of the lens 2, and the lens molding cutout portion 3 has a first end and a second end opposite to each other in the circumferential direction of the lens 2. The first end and the second end of the relief portion may be opposite ends of the intersection of the relief portion and the circumferential edge of the lens, and the first end and the second end of the lens molding cutout portion may be opposite ends of the intersection of the lens molding cutout portion and the circumferential edge of the lens.

[0059] In an exemplary embodiment, the distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. That is, the angle formed by the two ends of the relief portion 4 at the center of the lens is equal to the angle formed by the two ends of the lens molding cutout portion 3 at the center of the lens. This effectively improves the uniformity of force applied to the lens in different directions, thereby effectively reducing the risk of bifurcation of the lens in different directions. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is less than or equal to 0.65, preferably between 0.15 and 0.55. By limiting this ratio, the risk of bifurcation of the lens can be reduced while ensuring lens stability.

[0060] In an exemplary embodiment, see Figure 7 or Figure 11, lens 2 is an aspherical lens, and the distance between the first and second ends of the relief portion 4 (also referred to as the width of the relief portion) is greater than or equal to 70% of the effective aperture of lens 2. When the distance between the first and second ends of the relief portion 4 meets the above conditions, effective airflow avoidance can be achieved, thereby effectively improving the uniformity of force applied to the lens in different directions, thereby effectively reducing the risk of the lens's surface bifurcation in different directions. The greater the distance between the first and second ends of the relief portion 4, the better the effect. When both sides of the lens are aspherical, the effective aperture of the lens corresponds to the smaller effective aperture of the two surfaces.

[0061] join Figure 7 、 Figure 10-12 The shape of the cutting edge of the avoidance portion 4 includes but is not limited to a straight line, an arc, a wave or a broken line.

[0062] For some lenses with specific shapes, the present application is effective in reducing the risk of the lens having a bifurcated face in different directions.

[0063] In an exemplary embodiment, the effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: (D / 2) / SAG≤2; preferably, (D / 2) / SAG≤1.2. Figure 16 The diagram shows the effective aperture D and the sag SAG of one side of the lens. Lenses with smaller semi-apertures and larger sags are more likely to experience bifurcation due to uneven force during reliability testing. Providing a relief portion 4 in the lens barrel 1 and / or lens 2 significantly reduces the risk of bifurcation.

[0064] In an exemplary embodiment, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / (Dmax / 2)≤0.4; preferably, d / (Dmax / 2)≤0.3, and the maximum effective aperture Dmax of the lens corresponds to the effective aperture of the lens corresponding to the largest effective aperture on both side surfaces. Figure 17 The dimensions of the center thickness d of the lens and the maximum effective aperture Dmax of the lens are shown.

[0065] In the present application, lenses include but are not limited to plastic lenses, and lenses include but are not limited to meniscus lenses, biconcave lenses or biconvex lenses.

[0066] join Figure 7 The present application also provides a lens 2, which has a lens molding cutout portion 3 and an avoidance portion 4 in the form of a cutout, the line connecting the center point of the avoidance portion 4 and the center of the lens is 90° to the line connecting the center point of the lens molding cutout portion 3 and the center of the lens, the lens 2 has a continuous supporting portion of not less than 200°, and the avoidance portion 4 forms an avoidance space between the lens 2 and the lens barrel 1 when the lens 2 is assembled into the lens barrel 1.

[0067] The uneven force applied to the lens 2 in the lens barrel 1 is mainly reflected in the first and second directions. The first direction is the direction from the center point of the lens molding cutout 3 to the center of the lens, and the second direction is perpendicular to the first direction. After the reliability test, the surface shape of the lens 2 in the first and second directions changes inconsistently, which can easily cause the surface shape of the lens 2 to bifurcate in the first and second directions. Since the lens 2 does not contact the lens barrel 1 at both the lens molding cutout 3 and the avoidance portion 4, the avoidance portion 4 is provided at the location where the lens 2 is subjected to greater force. The uniformity of the force applied to the lens 2 in the first and second directions is improved, thereby reducing the risk of the surface shape of the lens 2 bifurcate in the first and second directions. At the same time, providing the avoidance portion 4 at the location where the lens 2 is subjected to greater force is conducive to ensuring that the lens 2 has a continuous supporting portion of not less than 200°, thereby improving the accuracy of the lens 2 eccentricity test.

[0068] The avoidance portion 4 has a first end and a second end opposite to each other in the circumferential direction of the lens 2 , and the lens molding cutout portion 3 has a first end and a second end opposite to each other in the circumferential direction of the lens 2 .

[0069] In an exemplary embodiment, the distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. That is, the angle formed by the two ends of the relief portion 4 at the center of the lens is equal to the angle formed by the two ends of the lens molding cutout portion 3 at the center of the lens. This effectively improves the uniformity of force applied to the lens in different directions, thereby effectively reducing the risk of bifurcation of the lens in different directions. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is less than or equal to 0.65, preferably between 0.15 and 0.55. By limiting this ratio, the risk of bifurcation of the lens can be reduced while ensuring lens stability.

[0070] In an exemplary embodiment, see Figure 7 or Figure 11 , lens 2 is an aspherical lens, and the distance between the first and second ends of the relief portion 4 is greater than or equal to 70% of the effective aperture of any side surface of lens 2. When the distance between the first and second ends of the relief portion 4 meets the above conditions, effective air avoidance can be achieved, thereby effectively improving the uniformity of force applied to the lens in different directions, thereby effectively reducing the risk of the lens's surface bifurcation in different directions. The greater the distance between the first and second ends of the relief portion 4, the better the effect. When both sides of the lens are aspherical, the effective aperture of the lens corresponds to the smaller effective aperture of the two surfaces.

[0071] join Figure 7 、 Figure 10 The shape of the cutting edge of the avoidance portion 4 includes but is not limited to a straight line, an arc, a wave or a broken line.

[0072] For some lenses with specific shapes, the present application is effective in reducing the risk of the lens having a bifurcated face in different directions.

[0073] In an exemplary embodiment, the effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: (D / 2) / SAG≤2; preferably, (D / 2) / SAG≤1.2. Figure 16 The diagram shows the effective aperture D and the sag SAG of one side of the lens. Lenses with smaller semi-apertures and larger sags are more likely to experience bifurcation due to uneven force during reliability testing. Providing a relief portion 4 in the lens barrel 1 and / or lens 2 significantly reduces the risk of bifurcation.

[0074] In an exemplary embodiment, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / (Dmax / 2)≤0.4; preferably, d / (Dmax / 2)≤0.3, and the maximum effective aperture Dmax of the lens corresponds to the effective aperture of the lens corresponding to the largest effective aperture on both side surfaces. Figure 17 The dimensions of the center thickness d of the lens and the maximum effective aperture Dmax of the lens are shown.

[0075] In the present application, lenses include but are not limited to plastic lenses, and lenses include but are not limited to meniscus lenses, biconcave lenses or biconvex lenses.

[0076] Specific embodiments applicable to the above-mentioned embodiments are further described below.

[0077] Example 1

[0078] This embodiment provides a lens, Figure 7 A schematic structural diagram of the lens is shown.

[0079] See also Figure 7 The lens 2 has a lens forming cutout portion 3 and an avoidance portion 4 in the form of a cutout. The line connecting the center point of the avoidance portion 4 and the center of the lens is 90° to the line connecting the center point of the lens forming cutout portion 3 and the center of the lens. The lens 2 has a continuous supporting portion of not less than 200°, and the cutting edge of the avoidance portion 4 is straight.

[0080] The relief portion 4 has opposing first and second ends circumferentially of the lens 2. The lens molding cutout portion 3 has opposing first and second ends circumferentially of the lens 2. The distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. The distance between the first and second ends of the relief portion 4 is greater than or equal to 70% of the effective aperture of the aspheric surface of the lens. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is 0.41. The distance between the first and second ends of the relief portion 4 is 4 mm, and the outer diameter of the lens is 9.7 mm.

[0081] The effective diameter D of any side of the lens and the sag SAG of the side of the lens satisfy: (D / 2) / SAG≤2, for example (D / 2) / SAG=(4.2cm / 2) / 2cm=1.1, the lens can be, for example Figure 16 Meniscus lens shown.

[0082] This embodiment also provides an optical lens, Figure 8 A schematic structural diagram of the optical lens is shown.

[0083] See also Figure 8 The optical lens includes a lens barrel 1 and a lens 2 provided in this embodiment, and the lens 2 is located in the lens barrel 1.

[0084] Figure 9 The figure shows the degree of surface shape change of the lens in the first direction (Y-axis direction) and the second direction (X-axis direction). The first direction (Y-axis direction) is the direction from the center point of the lens molding cutout to the center of the lens, and the second direction (X-axis direction) is perpendicular to the first direction. Figure 9 It can be seen that the degree of change in the second direction (X-axis direction) is close to that in the first direction (Y-axis direction), which can effectively reduce the risk of bifurcation of the lens. Figure 9 Shown Figure 7 A simulation of the measured surface shape of the middle lens. Figure 9 The horizontal axis (R axis) depicts the radial position of the lens in the X-axis or Y-axis direction, and the vertical axis (Zd axis) depicts the difference Zd between the measured data and the design data in the Z-axis direction.

[0085] This embodiment provides the aforementioned relief portion 4 at a location on the lens 2 subject to greater force, thereby balancing the force applied to the lens 2 in the direction from the center of the lens molding cutout 3 to the center of the lens, as well as in a direction perpendicular to this direction. This effectively improves the uniformity of force applied to the lens, thereby effectively reducing the risk of bifurcation of the lens profile and improving the uniformity of lens performance. Furthermore, the lens 2 is provided with only one relief portion 4 perpendicular to the direction from the center of the lens molding cutout 3 to the center of the lens. The distance between the first and second ends of the relief portion 4 is consistent with the width of the lens molding cutout 3 in the circumferential direction of the lens 2. This ensures that the lens has a continuous support portion of no less than 200°, thereby improving the accuracy of lens decentration testing.

[0086] Example 2

[0087] This embodiment provides a lens, Figure 10 A schematic structural diagram of the lens is shown.

[0088] See also Figure 10 The lens 2 has a lens forming cutout portion 3 and an avoidance portion 4 in the form of a cutout. The line connecting the center point of the avoidance portion 4 and the center of the lens is 90° to the line connecting the center point of the lens forming cutout portion 3 and the center of the lens. The lens 2 has a continuous supporting portion of not less than 200°, and the cutting edge of the avoidance portion 4 is arc-shaped.

[0089] The relief portion 4 has opposing first and second ends circumferentially of the lens 2. The lens molding cutout portion 3 has opposing first and second ends circumferentially of the lens 2. The distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. The distance between the first and second ends of the relief portion 4 is greater than or equal to 70% of the effective aperture of the aspheric surface of the lens. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is 0.43, and the distance between the first and second ends of the relief portion 4 is 4.2 mm.

[0090] The central thickness d of the lens and the maximum effective aperture Dmax of the lens can satisfy d / (Dmax / 2)≤0.4. In the case of a lens with a large curvature, the effective aperture D of any side of the lens and the sag height SAG of that side of the lens can satisfy: (D / 2) / SAG≤2.

[0091] This embodiment further provides an optical lens, which includes a lens barrel 1 and a lens 2 provided in this embodiment, wherein the lens 2 is located in the lens barrel 1 .

[0092] This embodiment provides the aforementioned relief portion 4 at a location on the lens 2 subject to greater force, thereby balancing the force applied to the lens 2 in the direction from the center of the lens molding cutout 3 to the center of the lens, as well as in a direction perpendicular to this direction. This effectively improves the uniformity of force applied to the lens, thereby effectively reducing the risk of bifurcation of the lens profile and improving the uniformity of lens performance. Furthermore, the lens 2 is provided with only one relief portion 4 perpendicular to the direction from the center of the lens molding cutout 3 to the center of the lens. The distance between the first and second ends of the relief portion 4 is consistent with the circumferential width of the lens molding cutout 3. This ensures that the lens has a continuous support area of ​​no less than 200°, thereby improving the accuracy of lens decentration testing.

[0093] Example 3

[0094] This embodiment provides an optical lens, Figure 11 A schematic structural diagram of the optical lens is shown.

[0095] See also Figure 11 The optical lens comprises a lens barrel 1 and a lens 2. The lens 2 is located in the lens barrel 1 and has a lens molding cutout portion 3. The lens barrel 1 has a relief portion 4 in the form of a cutout, and the line connecting the center point of the relief portion 4 and the center of the lens is at 90 degrees to the line connecting the center point of the lens molding cutout portion 3 and the center of the lens.

[0096] The relief portion 4 has opposing first and second ends circumferentially of the lens 2. The lens molding cutout portion 3 has opposing first and second ends circumferentially of the lens 2. The distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. The distance between the first and second ends of the relief portion 4 is greater than or equal to 70% of the effective aperture of the aspheric surface of the lens. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is 0.39, and the distance between the first and second ends of the relief portion 4 is 3.8 mm.

[0097] The central thickness d of the lens and its maximum effective aperture Dmax can satisfy d / (Dmax / 2) ≤ 0.4. For a large curvature, the effective aperture D of any side of the lens and its sag height SAG can satisfy (D / 2) / SAG ≤ 2.

[0098] By providing the aforementioned relief portion 4 within the lens barrel 1, this embodiment balances the forces acting on the lens 2 in the direction from the center of the lens molding cutout 3 to the lens center, as well as in a direction perpendicular to this direction. This effectively improves the uniformity of force applied to the lens, thereby effectively reducing the risk of bifurcation and improving the uniformity of lens performance. Furthermore, due to the relatively small size of the lens molding cutout 3, the lens only has one lens molding cutout 3, ensuring a continuous support area of ​​no less than 200°, thereby improving the accuracy of lens decentration testing.

[0099] like Figure 11 As shown, the cutting edge of the avoidance portion 4 may be straight line; Figure 12 As shown, the cutting edge of the escape portion 4 may also be arc-shaped.

[0100] Example 4

[0101] This embodiment provides an optical lens, Figure 13 A schematic structural diagram of the optical lens is shown.

[0102] See also Figure 13 The optical lens comprises a lens barrel 1 and a lens 2. The lens 2 is located in the lens barrel 1 and has a lens molding cutout portion 3. The lens barrel 1 may have two avoidance portions 4 in the form of cutouts. The line connecting the center point of the avoidance portion 4 and the center of the lens is 120 degrees to the line connecting the center point of the lens molding cutout portion 3 and the center of the lens.

[0103] The relief portion 4 has opposing first and second ends circumferentially of the lens 2. The lens molding cutout portion 3 has opposing first and second ends circumferentially of the lens 2. The distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. The distance between the first and second ends of the relief portion 4 is greater than or equal to 70% of the effective aperture of the aspheric surface of the lens. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is 0.45, and the distance between the first and second ends of the relief portion 4 is 4.5 mm.

[0104] The central thickness d of the lens and the maximum effective aperture Dmax of the lens can satisfy d / (Dmax / 2)≤0.4. In the case of a lens with a large curvature, the effective aperture D of any side of the lens and the sag height SAG of that side of the lens can satisfy: (D / 2) / SAG≤2.

[0105] This embodiment effectively improves the uniformity of force applied to the lens within the barrel by providing the aforementioned relief portion 4 within the barrel, thereby effectively reducing the risk of bifurcation and improving the uniformity of lens performance. Furthermore, due to the relatively small size of the lens molding cutout 3, the lens 2 only has one lens molding cutout 3, ensuring a continuous support area of ​​no less than 200°, thereby improving the accuracy of lens decentration testing.

[0106] like Figure 13 As shown, the cutting edge of the avoidance portion 4 can be straight line. In addition, the cutting edge of the avoidance portion 4 can also be arcuate.

[0107] Example 5

[0108] This embodiment provides an optical lens, Figure 14 A schematic structural diagram of the optical lens is shown.

[0109] See also Figure 14 The optical lens comprises a lens barrel 1 and a lens 2. The lens 2 is located in the lens barrel 1. The lens 2 has a lens molding cutout portion 3. The lens barrel 1 may have three avoidance portions 4 in the form of cutouts. The line connecting the center point of the avoidance portion 4 and the center of the lens is at 90 degrees to the line connecting the center point of the lens molding cutout portion 3 and the center of the lens. The line connecting the center point of the avoidance portion 4 and the center of the lens is at 90 degrees to the line connecting the center point of the adjacent avoidance portion 4 and the center of the lens.

[0110] The relief portion 4 has opposing first and second ends circumferentially of the lens 2. The lens molding cutout portion 3 has opposing first and second ends circumferentially of the lens 2. The distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. The distance between the first and second ends of the relief portion 4 is greater than or equal to 70% of the effective aperture of the aspheric surface of the lens. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is 0.4, and the distance between the first and second ends of the relief portion 4 is 4 mm.

[0111] The central thickness d of the lens and the maximum effective aperture Dmax of the lens can satisfy d / (Dmax / 2)≤0.4. In the case of a lens with a large curvature, the effective aperture D of any side of the lens and the sag height SAG of that side of the lens can satisfy: (D / 2) / SAG≤2.

[0112] This embodiment effectively improves the uniformity of force applied to the lens within the barrel by providing the aforementioned relief portion 4 within the barrel, thereby effectively reducing the risk of bifurcation and improving the uniformity of lens performance. Furthermore, due to the relatively small size of the lens molding cutout 3, the lens 2 only has one lens molding cutout 3, ensuring a continuous support area of ​​no less than 200°, thereby improving the accuracy of lens decentration testing.

[0113] like Figure 14 As shown, the cutting edge of the avoidance portion 4 can be straight line. In addition, the cutting edge of the avoidance portion 4 can also be arcuate.

[0114] Example 6

[0115] This embodiment provides an optical lens, Figure 15 A schematic structural diagram of the optical lens is shown.

[0116] See also Figure 15 The optical lens comprises a lens barrel 1 and a lens 2. The lens 2 is located in the lens barrel 1. The lens 2 has a lens molding cutout portion 3. The lens barrel 1 may have four avoidance portions 4 in the form of cutouts. The line connecting the center point of the avoidance portion 4 and the center of the lens is 72 degrees to the line connecting the center point of the lens molding cutout portion 3 and the center of the lens. The line connecting the center point of the avoidance portion 4 and the center of the lens is 72 degrees to the line connecting the center point of the adjacent avoidance portion 4 and the center of the lens.

[0117] The relief portion 4 has opposing first and second ends circumferentially of the lens 2. The lens molding cutout portion 3 has opposing first and second ends circumferentially of the lens 2. The distance between the first and second ends of the relief portion 4 is consistent with the distance between the first and second ends of the lens molding cutout portion 3. The distance between the first and second ends of the relief portion 4 is greater than or equal to 70% of the effective aperture of the aspheric surface of the lens. Specifically, the ratio of the distance between the first and second ends of the relief portion 4 to the outer diameter of the lens is 0.41, and the distance between the first and second ends of the relief portion 4 is 4 mm.

[0118] The central thickness d of the lens and the maximum effective aperture Dmax of the lens can satisfy d / (Dmax / 2)≤0.4. In the case of a lens with a large curvature, the effective aperture D of any side of the lens and the sag height SAG of that side of the lens can satisfy: (D / 2) / SAG≤2.

[0119] This embodiment effectively improves the uniformity of force applied to the lens within the barrel by providing the aforementioned relief portion 4 within the barrel, thereby effectively reducing the risk of bifurcation and improving the uniformity of lens performance. Furthermore, due to the relatively small size of the lens molding cutout 3, the lens 2 only has one lens molding cutout 3, ensuring a continuous support area of ​​no less than 200°, thereby improving the accuracy of lens decentration testing.

[0120] like Figure 15 As shown, the cutting edge of the avoidance portion 4 can be straight line. In addition, the cutting edge of the avoidance portion 4 can also be arcuate.

[0121] Example 7

[0122] This embodiment provides a lens, which has a lens-molding cutout portion and an avoidance portion in the form of a cutout, the line connecting the center point of the avoidance portion and the center of the lens is 90° to the line connecting the center point of the lens-molding cutout portion and the center of the lens, the lens has a continuous supporting portion of not less than 200°, and the cut edge of the avoidance portion is a straight line.

[0123] The relief portion has a first end and a second end that are opposite to each other in the circumferential direction of the lens, and the lens molding cutout portion has a first end and a second end that are opposite to each other in the circumferential direction of the lens. The distance between the first end and the second end of the relief portion is consistent with the distance between the first end and the second end of the lens molding cutout portion, and the distance between the first end and the second end of the relief portion is greater than or equal to 70% of the effective aperture of the aspheric surface of the lens. Specifically, the ratio of the distance between the first end and the second end of the relief portion to the outer diameter of the lens is 0.36, the distance between the first end and the second end of the relief portion is 3.4 mm, and the outer diameter of the lens is 9.3 mm.

[0124] The center thickness d of the lens and the maximum effective diameter Dmax of the lens can satisfy: d / (Dmax / 2)≤0.4, for example, d / (Dmax / 2)=0.6cm / (4.2cm / 2)=0.28, and the lens can be, for example Figure 17 shown.

[0125] This embodiment further provides an optical lens, which includes a lens barrel and the lens provided in this embodiment, and the lens is located in the lens barrel.

[0126] This embodiment provides the aforementioned relief portion at locations where the lens is subjected to greater force, thereby balancing the force applied to the lens in the direction from the center of the lens molded cutout to the center of the lens, as well as in a direction perpendicular to this direction. This effectively improves the uniformity of force applied to the lens, thereby effectively reducing the risk of bifurcation and improving the uniformity of lens performance. Furthermore, the lens only has one relief portion perpendicular to the direction from the center of the lens molded cutout to the center of the lens. The distance between the first and second ends of the relief portion is consistent with the circumferential width of the lens molded cutout. This ensures that the lens has a continuous support area of ​​no less than 200°, thereby improving the accuracy of lens decentration testing.

[0127] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical lens, comprising: Lens tube: and a lens, located in the lens barrel, the lens having a lens-forming cutout portion; It is characterized in that the lens barrel and / or the lens have an escape portion in the form of a cut and a width greater than or equal to 70% of the effective aperture of the lens, so that an escape space is formed between the lens and the lens barrel when the lens is assembled into the lens barrel, and the lens has a continuous supporting portion of not less than 200°.

2. The optical lens according to claim 1, wherein: The lens has the avoidance portion, and the line connecting the center point of the avoidance portion and the center of the lens forms a 90° angle with the line connecting the center point of the lens molding cutout portion and the center of the lens.

3. The optical lens according to claim 1, wherein: The lens barrel has the avoidance portion, and a line connecting a center point of the avoidance portion and a center of the lens forms a 90° angle with a line connecting a center point of the lens forming and cutting portion and the center of the lens.

4. The optical lens according to claim 1, wherein: The lens barrel has a plurality of the avoidance portions, and the plurality of the avoidance portions and the lens molding cutout portions are evenly distributed along the circumferential direction of the lens.

5. The optical lens according to claim 4, wherein: The lens barrel has two avoidance portions, and the line connecting the center point of the avoidance portion and the center of the lens forms a 120° angle with the line connecting the center point of the lens molding cutout portion and the center of the lens; Alternatively, the lens barrel has three avoidance portions, and a line connecting a center point of each avoidance portion and a center point of the lens forms a 90° angle with a line connecting a center point of an adjacent avoidance portion and a center point of the lens; Alternatively, the lens barrel has four avoidance portions, and a line connecting a center point of each avoidance portion and a center point of the lens forms an angle of 72° with a line connecting a center point of an adjacent avoidance portion and a center point of the lens.

6. The optical lens according to any one of claims 1 to 5, characterized in that: The avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the lens molding cutout portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is consistent with the distance between the first end and the second end of the lens molding cutout portion.

7. The optical lens according to claim 6, wherein: A ratio of a distance between the first end and the second end of the avoiding portion to an outer diameter of the lens is less than or equal to 0.

65.

8. The optical lens according to any one of claims 1 to 5, wherein: The lens is an aspherical lens, the avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is greater than or equal to 70% of the effective aperture of any side of the lens.

9. The optical lens according to any one of claims 1 to 5, wherein: The shape of the cutting edge of the avoidance portion includes a straight line, an arc, a wave or a broken line.

10. The optical lens according to any one of claims 1 to 5, characterized in that: The effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: fD / 2) / SAG≤2; Alternatively, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / fDmax / 2)≤0.

4.

11. The optical lens according to claim 10, wherein: The effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: fD / 2) / SAG≤1.2; Alternatively, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / fDmax / 2)≤0.

3.

12. A lens, characterized in that: The lens has a lens forming cutout portion and an avoidance portion in the form of a cut and with a width greater than or equal to 70% of the effective aperture of the lens. The line connecting the center point of the avoidance portion and the center of the lens is 90° to the line connecting the center point of the lens forming cutout portion and the center of the lens. The lens has a continuous supporting portion of not less than 200°.

13. The lens according to claim 12, wherein: The avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the lens molding cutout portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is consistent with the distance between the first end and the second end of the lens molding cutout portion.

14. The lens according to claim 13, wherein: A ratio of a distance between the first end and the second end of the avoiding portion to an outer diameter of the lens is less than or equal to 0.

65.

15. The lens according to claim 12, wherein: The lens is an aspherical lens, the avoidance portion has a first end and a second end opposite to each other in the circumferential direction of the lens, and the distance between the first end and the second end of the avoidance portion is greater than or equal to 70% of the effective aperture of any side surface of the lens.

16. The lens according to any one of claims 12 to 15, characterized in that: The shape of the cutting edge of the avoidance portion includes a straight line, an arc, a wave or a broken line.

17. The lens according to any one of claims 12 to 15, characterized in that: The effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: fD / 2) / SAG≤2; Alternatively, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / fDmax / 2)≤0.

4.

18. The lens according to claim 17, wherein: The effective aperture D of any side surface of the lens and the sag SAG of the side surface of the lens satisfy: fD / 2) / SAG≤1.2; Alternatively, the center thickness d of the lens and the maximum effective aperture Dmax of the lens satisfy: d / fDmax / 2)≤0.3.

Images