Optical lens

Abstract

The utility model provides a kind of optical lens. Optical lens includes lens barrel, at least including a piece of glass lens and two pieces of plastic lens, a piece of glass lens is placed between two pieces of plastic lens, and glass lens and plastic lens are all arranged in lens barrel;Glass lens and plastic lens all include a peripheral surface, and the peripheral surface is set away from the center of lens;Glass lens has edge-cut structure, and edge-cut structure is located on the peripheral surface of glass lens;Plastic lens includes optical effective part and the mechanism part of the circumferential setting around optical effective part, at least one side surface of mechanism part is provided with escape gas groove, escape gas groove extends along the radial direction of plastic lens, and two ends of escape gas groove respectively extend to the edge of optical effective part and the peripheral surface of mechanism part. The utility model solves the problem that the optical lens of glass lens in the prior art exists poor exhaust performance and poor reliability.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging equipment technology, and more specifically, to an optical lens. Background Technology

[0002] In recent years, glass lenses have been widely used in optical lenses for electronic devices due to their superior optical properties, high refractive index, and good transmittance. In particular, the placement of a centrally located glass lens between two plastic lenses is becoming increasingly common in optical lenses. However, the physical properties of glass lenses, such as their fragility and the tendency for watermarks and streaks to appear on their surface under high temperature and humidity conditions, have always been challenges in the design and manufacturing of optical lenses. These problems mainly stem from the excessively high internal airtightness of optical lenses, which prevents internal gases from effectively escaping, thus adversely affecting the structure and surface of the lens under extreme environmental conditions.

[0003] In other words, existing optical lenses with a centrally located glass lens suffer from poor air permeability and low reliability. Utility Model Content

[0004] The main objective of this invention is to provide an optical lens that solves the problems of poor air venting and poor reliability in existing optical lenses with centrally located glass lenses.

[0005] To achieve the above objectives, according to one aspect of the present invention, an optical lens is provided. The optical lens includes a lens barrel, at least one glass lens and two plastic lenses, with the glass lens disposed between the two plastic lenses. Both the glass lens and the plastic lenses are disposed within the lens barrel. Both the glass lens and the plastic lenses include an outer peripheral surface, which is disposed away from the center of the lens. The glass lens has a chamfered edge structure disposed on the outer peripheral surface of the glass lens. The plastic lens includes an optically active portion and a mechanism portion disposed circumferentially around the optically active portion. The mechanism portion is disposed on the outer peripheral surface of the plastic lens. At least one side surface of the mechanism portion is provided with an escaping groove, which extends radially along the plastic lens. One end of the escaping groove away from the center of the plastic lens extends to the outer peripheral surface of the mechanism portion, and the other end of the escaping groove near the center of the plastic lens extends to the edge of the optically active portion or is spaced apart from the edge of the optically active portion.

[0006] Furthermore, the radial depth A of the tangent edge of the glass lens and the radius R of the glass lens satisfy the following condition: 0 < A / R ≤ 0.3.

[0007] Furthermore, the angle between the tangent line of the glass lens and the tangent line at the center of the tangent line of the glass lens's tangent edge. Satisfy: 0° < <40°.

[0008] Furthermore, the shaving structure is at least one shaving surface disposed at one end or both symmetrical ends of the glass lens, the shaving surface extending along the optical axis of the glass lens and extending to both sides of the glass lens; and / or, the shaving surface is a plane, and the other set of oppositely disposed edges of the shaving surface are equidistant from the optical axis of the glass lens.

[0009] Furthermore, when the end of the vent groove near the center of the plastic lens is spaced apart from the edge of the optical effective part, the mechanism between the optical effective part and the vent groove has an annular plane, and the annular plane is connected to the vent groove.

[0010] Furthermore, the distance H1 from the inner edge of the annular plane to the optical axis of the plastic lens satisfies the following condition with respect to the non-effective radius R1 of the plastic lens: 0.20≤H2 / R1≤0.45; and / or, the radial width H2 of the annular plane satisfies the following condition with respect to the distance H1 from the inner edge of the annular plane to the optical axis of the plastic lens: 0.4≤H2 / H1≤0.6.

[0011] Furthermore, the opening width B of the vent groove at the end closest to the center of the plastic lens is less than or equal to the opening width C of the vent groove at the end furthest from the center of the plastic lens; the depth D of the vent groove is less than or equal to half the edge thickness of the plastic lens; the radial length F of the vent groove is greater than the depth D of the vent groove; the opening width B of the vent groove at the end closest to the center of the plastic lens and the radial length F of the vent groove satisfy the following condition: 7 ≥ F / B ≥ 0.5.

[0012] Furthermore, the plastic lens also includes a feed port, the number of which is one. The feed port is located on the outer peripheral surface of the mechanism and is arranged to avoid the air escaping groove. The cutting edge structure is arranged corresponding to the feed port so that the cutting edge structure and the feed port are arranged in the same straight line direction.

[0013] Furthermore, the included angle between the feed inlet and the adjacent venting groove Satisfy: 20°≤ ≤180°.

[0014] Furthermore, the number of cut edges on a glass lens is one or two; the number of venting grooves on one side surface of the mechanism of a plastic lens is greater than or equal to one and less than or equal to four. When the number of venting grooves on one side surface of the mechanism is two, the two venting grooves are arranged opposite each other; when the number of venting grooves on one side surface of the mechanism is four, the included angle between two adjacent venting grooves is equal.

[0015] According to the technical solution of this utility model, the optical lens includes a lens barrel, at least one glass lens and two plastic lenses, with the glass lens placed between the two plastic lenses. Both the glass lens and the plastic lenses are disposed in the lens barrel. Both the glass lens and the plastic lenses include an outer peripheral surface, which is disposed away from the center of the lens. The glass lens has a chamfered edge structure, which is disposed on the outer peripheral surface of the glass lens. The plastic lens includes an optical effective part and a mechanism part disposed circumferentially around the optical effective part. The mechanism part is disposed on the outer peripheral surface of the plastic lens. At least one side surface of the mechanism part is provided with an escaping groove, which extends radially along the plastic lens. One end of the escaping groove away from the center of the plastic lens extends to the outer peripheral surface of the mechanism part, and the other end of the escaping groove near the center of the plastic lens extends to the edge of the optical effective part or is spaced apart from the edge of the optical effective part.

[0016] The optical lens disclosed in this application is a lens with a centrally located glass lens, where a glass lens is placed between two plastic lenses to improve lens temperature drift and enhance lens performance. However, glass lenses are fragile and prone to watermarks and streaks on their surface under high temperature and humidity. By incorporating a chamfered structure on the glass lens and venting grooves on the plastic lenses, gas can be better expelled through these structures. This improves the airtightness between the glass lens and the lens barrel, as well as between adjacent lenses, thereby improving the overall airtightness of the optical lens. This enhances the venting ability within the optical lens, preventing excessive internal pressure from compressing the internal structure and reducing the likelihood of the glass lens breaking under pressure. Furthermore, the lower airtightness allows for better gas expulsion after high temperature and humidity reliability testing, further reducing watermarks and streaks on the lens surface, thus improving the reliability and overall performance of the optical lens. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the optical lens of Embodiment 1 of this utility model is shown;

[0019] Figure 2 It shows Figure 1 A structural diagram of a glass lens at one angle;

[0020] Figure 3 It shows Figure 1 A structural diagram of the glass lens from another angle;

[0021] Figure 4 It shows Figure 1 A structural diagram of the glass lens from another angle;

[0022] Figure 5 It shows Figure 1 A structural diagram of a plastic lens at one angle;

[0023] Figure 6 It shows Figure 1 The dimensioning diagram of the plastic lens in the image;

[0024] Figure 7 It shows Figure 6 A cross-sectional view of the plastic lens in the EE direction;

[0025] Figure 8 A schematic diagram of the optical lens structure of Embodiment 2 of this utility model is shown;

[0026] Figure 9 It shows Figure 8 A structural diagram of a plastic lens at one angle;

[0027] Figure 10 It shows Figure 8 The dimensioning diagram of the plastic lens in the image;

[0028] Figure 11 It shows Figure 10 A cross-sectional view of the plastic lens in the EE direction.

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

[0030] 10. Glass lens; 101. Chamfered edge; 20. Plastic lens; 201. Air vent groove; 202. Feed port; 203. Optical effective part; 204. Mechanism part; 30. Optical axis; 40. Lens barrel. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0033] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0034] To address the issues of poor air venting and low reliability in existing optical lenses with centrally located glass lenses, this invention provides an optical lens.

[0035] Example 1

[0036] like Figures 1 to 7 As shown, the optical lens of Embodiment 1 is described.

[0037] Specifically, the optical lens includes a lens barrel 40, at least one glass lens 10, and two plastic lenses 20. The glass lens 10 is placed between the two plastic lenses 20, and both the glass lens 10 and the plastic lenses 20 are disposed in the lens barrel 40. Both the glass lens 10 and the plastic lenses 20 include an outer peripheral surface, which is disposed away from the center of the lens. The glass lens 10 has a chamfered edge structure, which is disposed on the outer peripheral surface of the glass lens 10. The plastic lens 20 includes an optical effective part 203 and a mechanism part 204 disposed circumferentially around the optical effective part 203. The mechanism part is disposed on the outer peripheral surface of the plastic lens 20. At least one side surface of the mechanism part 204 is provided with an escaping groove 201. The escaping groove 201 extends radially along the plastic lens 20, and one end of the escaping groove 201 away from the center of the plastic lens 20 extends to the outer peripheral surface of the mechanism part 204. The other end of the escaping groove 201 near the center of the plastic lens 20 extends to the edge of the optical effective part 203 or is spaced apart from the edge of the optical effective part 203.

[0038] The optical lens of this application is a lens with a centrally located glass lens, in which a glass lens 10 is placed between two plastic lenses 20 to improve lens temperature drift and enhance lens performance. However, the glass lens 10 is fragile and prone to watermarks and streaks on its surface under high temperature and humidity. By providing a chamfered structure on the glass lens 10 and an venting groove 201 on the plastic lens 20, gas can be better discharged through the chamfered structure and the venting groove 201, which improves the airtightness between the glass lens and the lens barrel and adjacent lenses, thereby improving the overall airtightness of the optical lens. This improves the venting performance of the optical lens and helps prevent excessive internal pressure from compressing the internal structure, reducing the possibility of the glass lens 10 breaking under pressure. At the same time, the lower airtightness allows the optical lens to better discharge gas after high temperature and humidity reliability tests, thereby reducing watermarks and streaks on the lens surface, which is beneficial to improving the reliability and overall performance of the optical lens.

[0039] Specifically, the radial depth A of the cut edge of the glass lens 10 and the radius R of the glass lens 10 satisfy the condition: 0 < A / R ≤ 0.3. By constraining 0 < A / R ≤ 0.3, it is possible to ensure that the cut edge depth is not too small, thus ensuring air permeability; on the other hand, it is possible to ensure that the cut edge depth is not too large, avoiding affecting the structural strength of the glass lens 10. This helps to ensure the overall dimensional rationality and stability of the glass lens 10, improves aesthetics, reduces processing difficulty and cost, and adapts to various application scenarios.

[0040] In Embodiment 1 and Example 2 of this application, A = 0.20 mm, R = 4.45 mm, and A / R = 0.04.

[0041] Specifically, the angle between the tangent line of the glass lens 10 and the tangent line at the center of the tangent line of the glass lens 10's tangent edge. Satisfy: 0° < <40°. By constraining 0°< The angle is less than 40°, which allows for control of the angle range and, consequently, the cutting depth. This helps ensure the air permeability and structural strength of the glass lens 10, and guarantees the overall dimensional rationality and stability of the glass lens 10.

[0042] In Embodiments 1 and 2 of this application, =19°.

[0043] It should be noted that, in Figure 1Although the image shows an optical lens with five elements, the focus of this application is not on the number of elements or their optical parameters, such as power and surface shape. Therefore, this application does not limit the specific number of elements or their optical parameters. The number of elements in the optical lens can be three, four, five, or more. It is sufficient to ensure that the optical lens contains one glass element 10 and two plastic elements 20, with the glass element 10 positioned between the two plastic elements 20. The materials of the glass element 10 and the plastic elements 20 in this application are existing materials.

[0044] It should also be noted that the aforementioned edge-cutting structure is specifically a structure formed by cutting the edge mechanism portion of the glass lens 10. The radial depth of the edge-cutting of the glass lens 10 specifically refers to the radial dimension of the structure cut off during the edge-cutting process of the glass lens 10.

[0045] In an optional embodiment of this application, an air vent groove 201 may be provided on both plastic lenses 20, or an air vent groove 201 may be provided on only one of the two plastic lenses 20, depending on the actual situation.

[0046] Specifically, a glass lens 10 and two plastic lenses 20 are both disposed within the lens barrel 40. Optionally, spacers may also be disposed within the lens barrel 40, positioned between adjacent lenses to provide support for the lenses. The mechanism portion 204 of the plastic lens 20 is connected to the optical effective portion 203, whereby the optical effective portion 203 is used for the passage of imaging light and participates in imaging; while the mechanism portion 204 is not used for the passage of imaging light and does not participate in imaging, but is used to contact adjacent spacers, adjacent lenses, or the lens barrel 40. Similarly, the glass lens 10 also includes an interconnected central effective portion and an edge mechanism portion, the edge mechanism portion being disposed circumferentially around the outer periphery of the central effective portion. The central effective portion is used for the passage of imaging light and participates in imaging; while the edge mechanism portion is not used for the passage of imaging light and does not participate in imaging, but is used to contact adjacent spacers, adjacent lenses, or the lens barrel 40.

[0047] In this embodiment, as Figure 5 and Figure 6 As shown, the end of the vent groove 201 near the center of the plastic lens 20 is spaced apart from the edge of the optical effective part 203, so that the mechanism part 204 between the optical effective part 203 and the vent groove 201 has an annular plane, and the annular plane is connected to the vent groove 201. That is to say, the annular plane is on the mechanism part 204. This can also improve the airtightness between adjacent lenses, so as to avoid the lens breaking due to excessive air pressure.

[0048] Specifically, the distance H1 from the inner edge of the annular plane to the optical axis of the plastic lens 20 satisfies the following condition with respect to the non-effective radius R1 of the plastic lens 20: 0.20 ≤ H2 / R1 ≤ 0.45. This design avoids the situation where the radial width of the vent groove 201 is too small due to an excessively large annular plane, ensuring both the reasonable dimensionality of the annular plane and the reliability and venting effect of the vent groove 201. In Embodiment 1 of this application, R1 = 4.58 mm, H2 = 1.15 mm, and H2 / R1 = 0.25.

[0049] Specifically, the radial width H2 of the annular plane and the distance H1 from the inner edge of the annular plane to the optical axis of the plastic lens 20 satisfy the following condition: 0.4 ≤ H2 / H1 ≤ 0.6. This setting can simultaneously constrain the radial width of the annular plane and the distance from the inner edge of the annular plane to the optical axis of the plastic lens 20, which helps to ensure the reasonableness of their dimensions and further ensures that the dimensions of the venting groove 201 meet the required venting effect. In Embodiment 1 of this application, H1 = 1.91 mm, H2 = 1.15 mm, and H2 / H1 = 0.6.

[0050] like Figures 2 to 4 As shown, the shaving structure is at least one shaving surface 101 provided at one end or at both symmetrical ends of the glass lens 10. That is, when there are two shaving surfaces 101 on the same glass lens 10, the two shaving surfaces 101 are arranged axially symmetrically along the straight line formed by extending along the diameter of the glass lens 10.

[0051] Specifically, the chamfered surface 101 extends along the optical axis of the glass lens 10 and reaches both sides of the glass lens 10, connecting with these two sides. It should be noted that the two sides of the glass lens 10 specifically refer to the object-side surface and the image-side surface. In this application, the object-side surface specifically refers to the side of the lens facing the object being photographed (not shown in the figure), and the image-side surface specifically refers to the side of the lens facing the imaging plane (not shown in the figure). By extending a set of opposing edges of the chamfered surface 101 to both sides of the glass lens 10, this arrangement ensures that the gas channels on both sides of the chamfered surface 101 are directly connected, forming a more unobstructed exhaust path. This allows the gas accumulated inside the optical lens to be discharged more quickly and smoothly, effectively preventing excessive internal pressure. Simultaneously, it ensures the symmetry and stability of the chamfered surface 101, preventing lens displacement or deformation during exhaust and maintaining the overall geometric accuracy of the optical lens.

[0052] Specifically, the chamfered surface 101 is planar, and the other set of opposite edges of the chamfered surface 101 are equidistant from the optical axis 30 of the glass lens 10. This other set of opposite edges of the chamfered surface 101 specifically refers to a set of opposite edges of the chamfered surface 101 that are parallel to the optical axis. By making the chamfered surface 101 planar, it can be ensured that the chamfering process does not significantly affect the optical properties of the glass lens 10, such as refractive index and light transmittance. Simultaneously, maintaining the equidistant distances of the other set of opposite edges of the chamfered surface 101 from the optical axis helps maintain the symmetry of the glass lens 10, prevents optical distortion, and ensures the imaging quality of the optical lens. It also effectively disperses the stress experienced by the glass lens 10 during assembly or use, preventing deformation or breakage of the glass lens 10 due to uneven stress, thereby improving the overall structural stability and reliability of the optical lens. In addition, it can provide a more uniform and symmetrical path for the emission of gas inside the optical lens, which helps the gas to pass through the glass lens 10 more effectively, reduces the pressure buildup inside the optical lens, avoids the formation of watermarks and striped white spots on the surface of the glass lens 10 under high temperature and high humidity conditions, and improves the reliability of the optical lens.

[0053] It should be noted that, in Figure 1 In the diagram, the optical axes of the glass lens 10, the plastic lens 20, and the lens barrel 40 coincide, so they can all be represented by the optical axis 30.

[0054] like Figure 6 As shown, the opening width B of the vent groove 201 at the end closest to the center of the plastic lens 20 is less than or equal to the opening width C of the end of the vent groove 201 furthest from the center of the plastic lens 20, and the opening width B of the vent groove 201 at the end closest to the center of the plastic lens 20 is greater than the depth D of the vent groove 201. That is, C ≥ B > D. By reasonably constraining the circumferential widths at both ends of the vent groove 201, the airtightness of the gas inside the optical lens under reliable conditions is ensured; an appropriate opening width B can increase the structural strength of the vent groove 201 while reducing the processing difficulty of the mold.

[0055] In one optional embodiment of this application, the opening width B of the vent groove 201 at the end near the center of the plastic lens 20 is smaller than the opening width C of the end of the vent groove 201 away from the center of the plastic lens 20. This allows for reasonable adjustment of the size of the vent groove 201 according to the specific structure of the plastic lens 20, resulting in a more rational size design.

[0056] In another optional embodiment of this application, the opening width B of the vent groove 201 at the end near the center of the plastic lens 20 is equal to the opening width C of the end of the vent groove 201 away from the center of the plastic lens 20. This arrangement facilitates the processing of the vent groove 201.

[0057] In addition, the depth D of the air escape groove 201 is less than or equal to half of the edge thickness of the plastic lens 20. The depth D of the air escape groove 201 may be less than half of the edge thickness of the plastic lens 20, and the depth D of the air escape groove 201 may also be equal to half of the edge thickness of the plastic lens 20. Such an arrangement can, on one hand, ensure that the depth of the air escape groove 201 is sufficient to meet the requirement for gas passage and guarantee the application effect; on the other hand, it can avoid the situation where the excessive depth of the air escape groove 201 affects the strength of the edge structure of the plastic lens 20.

[0058] Specifically, the radial length F of the air escape groove 201 is greater than the depth D of the air escape groove 201. Such an arrangement is beneficial for ensuring that the radial length of the air escape groove 201 is sufficient to meet the requirement of reducing the air pressure between adjacent lenses.

[0059] Specifically, the relationship between the opening width B of an end of the air escape groove 201 close to the center of the plastic lens 20 and the radial length F of the air escape groove 201 satisfies: 7≥F / B≥0.5. Constraining this ratio can reasonably plan the shape and size of the air escape groove 201 and ensure the reliability of pressure relief. In the first embodiment and the second embodiment of the present application, F=2.00 mm, B=1 mm, and F / B=2.0.

[0060] Specifically, the radial length F of the air escape groove 201 satisfies: 0.05 mm < F < 5 mm. Reasonably planning the radial length of the air escape groove 201 is beneficial for ensuring the application effect of the air escape groove 201, so that the air escape groove 201 can effectively relieve the air pressure between adjacent lenses. In the first embodiment and the second embodiment of the present application, F=2.00 mm.

[0061] Specifically, the opening width B of an end of the air escape groove 201 close to the center of the plastic lens 20 satisfies: 2 mm≥B≥0.1 mm. Reasonably constraining the width of the end of the air escape groove 201 can ensure the air tightness of the gas inside the optical lens under reliability conditions; an appropriate opening width B can increase the structural strength of the air escape groove 201 and reduce the processing difficulty of the mold at the same time. In the first embodiment and the second embodiment of the present application, B=1 mm.

[0062] Specifically, the opening width C of an end of the air escape groove 201 away from the center of the plastic lens 20 satisfies: 2 mm≥C≥B. Reasonably constraining the range of C facilitates mold design, molding and demolding, and facilitates arrangement and processing of the air escape groove 201 on the mold. In the first embodiment and the second embodiment of the present application, C=1.1 mm.

[0063] As Figure 7 shown, Figure 7 shows Figure 6A cross-sectional view of the plastic lens 20 in the EE direction. The depth D of the vent groove 201 satisfies: 0.2mm ≥ D ≥ 0.001mm. By reasonably constraining the depth D of the vent groove 201, it is beneficial to ensure the reliability of the vent groove 201 in use, ensure the flow of gas channels, and improve the dimensional stability of the lens. A reasonable depth design can minimize processing costs while ensuring lens quality. In Embodiments 1 and 2 of this application, D = 0.05mm.

[0064] It should be noted that when B=C, the projection shape of the vent groove 201 on the plastic lens 20 is rectangular or similar to a rectangle; when C>B, the projection shape of the vent groove 201 on the plastic lens 20 is trapezoidal or similar to a trapezoid. The bottom surface of the vent groove 201 is flat.

[0065] like Figures 5 to 7 As shown, the plastic lens 20 also includes a feed inlet 202. There is only one feed inlet 202, which is located on the outer peripheral surface of the mechanism section 204 and avoids the venting groove 201. The feed inlet 202 is the entrance for injection molding of the plastic lens 20. The feed inlet 202 avoids the venting groove 201; that is, the outer peripheral surface of the mechanism section 204 where the venting groove 201 is located does not have a feed inlet 202. This arrangement helps to ensure the structural strength of the mechanism section 204 of the plastic lens 20, avoiding the risk of deformation of the plastic lens 20 under pressure during use and assembly, and ensuring the assembly accuracy and stability of the plastic lens 20. In actual use and assembly, the trimming structure is correspondingly arranged with the feed inlet 202 so that the trimming structure and the feed inlet 202 are arranged in the same straight line direction. This setup better ensures the ventilation of the optical lens, allowing it to expel gases more effectively after high-temperature and high-humidity reliability tests. This reduces watermarks and streaks on the lens surface, improving the reliability and performance of the optical lens.

[0066] Specifically, the included angle between the feed inlet 202 and the adjacent venting groove 201 Satisfy: 20°≤ ≤180°. That is, the angle between the inlet 202 and the nearest vent groove 201. To meet the above range, the included angle is reasonably constrained. Within this range, the overall structural strength of the mold for the plastic lens 20 can be maintained, which is beneficial to extending its service life. Simultaneously, it can optimize gas emission and material flow during the injection molding process, improving process stability and controllability, thereby producing higher quality plastic lenses 20, while ensuring that the inlet 202 does not affect the venting groove 201 during molding. In Embodiments 1 and 2 of this application, =37°.

[0067] Optionally, the number of chamfered surfaces 101 on a single glass lens 10 may be one or two, depending on the actual situation. Figure 3 In the optional embodiment shown, the number of chamfered surfaces 101 on a single glass lens 10 is one. Figure 4 In the optional embodiment shown, there are two tangent surfaces 101 on a glass lens 10, and the two tangent surfaces 101 are arranged symmetrically along the diameter of the glass lens 10.

[0068] Optionally, the number of venting grooves 201 on one side surface of the mechanism portion 204 of a plastic lens 20 is greater than or equal to one and less than or equal to four. In one optional embodiment of this application (not shown in the figures), the number of venting grooves 201 on one side surface of the mechanism portion 204 is one. In another optional embodiment of this application (not shown in the figures), the number of venting grooves 201 on one side surface of the mechanism portion 204 is two, and the two venting grooves 201 are arranged opposite to each other, that is, the included angle between the two venting grooves 201 is 180°. In another optional embodiment of this application (not shown in the figure), when the number of vent grooves 201 on one side surface of the mechanism 204 is three, the three vent grooves 201 are distributed at equal angles around the circumference of the plastic lens 20, and the included angle between two adjacent vent grooves 201 is 120°. Alternatively, the three vent grooves 201 are distributed at unequal angles around the circumference of the plastic lens 20, that is, the three vent grooves 201 are randomly distributed around the circumference of the plastic lens 20, and the included angle between different adjacent vent grooves 201 is not equal. The included angle between two adjacent vent grooves 201 can be set according to the actual situation, and is not limited here. In another optional embodiment of this application, such as Figure 5 and Figure 6 As shown, there are four venting grooves 201 on one side surface of the mechanism 204. The four venting grooves 201 are distributed at equal angles around the circumference of the plastic lens 20, and the included angle between two adjacent venting grooves 201 is equal.

[0069] like Figures 5 to 7 In the preferred embodiment shown, only one side surface of the mechanism portion 204 of the plastic lens 20 has an air vent groove 201, and the number of air vent grooves 201 is four. The end of the air vent groove 201 away from the center of the plastic lens 20 extends to the outer peripheral surface of the mechanism portion 204, and the end of the air vent groove 201 near the center of the plastic lens 20 is spaced apart from the edge of the optical effective portion 203. Figure 5 It can be seen that the structure of the central circle is the optical effective part 203 of the plastic lens 20.

[0070] Example 2

[0071] like Figures 8 to 11 As shown, the optical lens of Embodiment 2 is described.

[0072] The difference between this embodiment and Embodiment 1 is that one end of the vent groove 201 near the center of the plastic lens 20 extends to the edge of the optical effective part 203. This arrangement allows the two ends of the vent groove 201 to connect to the optical effective part 203 and the outer peripheral surface of the plastic lens 20, respectively. This enables the vent groove 201 to provide a larger flow space for the gas between adjacent lenses, which is beneficial to reducing the airtightness between adjacent lenses.

[0073] like Figure 8 and Figure 9 As shown, in this embodiment, the optical lens includes a lens barrel 40, at least one glass lens 10, and two plastic lenses 20. The glass lens 10 is placed between the two plastic lenses 20, and both the glass lens 10 and the plastic lenses 20 are disposed in the lens barrel 40. Both the glass lens 10 and the plastic lenses 20 include an outer peripheral surface, which is disposed away from the center of the lens. The glass lens 10 has a chamfered edge structure, which is disposed on the outer peripheral surface of the glass lens 10. The plastic lens 20 includes an optical effective part 203 and a mechanism part 204 disposed circumferentially around the optical effective part 203. The mechanism part is disposed on the outer peripheral surface of the plastic lens 20. At least one side surface of the mechanism part 204 is provided with an escaping groove 201. The escaping groove 201 extends radially along the plastic lens 20, and one end of the escaping groove 201 away from the center of the plastic lens 20 extends to the outer peripheral surface of the mechanism part 204, while the other end of the escaping groove 201 near the center of the plastic lens 20 extends to the edge of the optical effective part 203.

[0074] like Figure 10 and Figure 11 As shown in the figure, the opening width B of the vent groove 201 near the center of the plastic lens 20, the opening width C of the vent groove 201 away from the center of the plastic lens 20, the depth D of the vent groove 201, the radial length F of the vent groove 201, and the included angle between the inlet 202 and the adjacent vent groove 201 are indicated. The setting requirements for these parameters are the same as in Example 1, and will not be repeated here.

[0075] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0076] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0077] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An optical lens, characterized in that, The optical lens includes a lens barrel (40), at least one glass lens (10) and two plastic lenses (20), one of the glass lenses (10) is placed between the two plastic lenses (20), and both the glass lens (10) and the plastic lenses (20) are disposed in the lens barrel (40); Both the glass lens (10) and the plastic lens (20) include an outer peripheral surface, which is disposed away from the center of the lens; The glass lens (10) has a slit structure, which is disposed on the outer peripheral surface of the glass lens (10); The plastic lens (20) includes an optical effective part (203) and a mechanism part (204) arranged circumferentially around the optical effective part (203). The mechanism part is disposed on the outer peripheral surface of the plastic lens (20). An escaping groove (201) is provided on at least one side surface of the mechanism part (204). The escaping groove (201) extends radially along the plastic lens (20), and one end of the escaping groove (201) away from the center of the plastic lens (20) extends to the outer peripheral surface of the mechanism part (204). One end of the escaping groove (201) near the center of the plastic lens (20) extends to the edge of the optical effective part (203) or is spaced apart from the edge of the optical effective part (203).

2. The optical lens according to claim 1, characterized in that, The radial depth A of the cut edge of the glass lens (10) and the radius R of the glass lens (10) satisfy the condition: 0 < A / R ≤ 0.

3.

3. The optical lens according to claim 1, characterized in that, The angle between the tangent of the glass lens (10) and the tangent at the center of the tangent of the glass lens (10) Satisfy: 0° < <40°.

4. The optical lens according to claim 1, characterized in that, The shaving structure is at least one shaving surface (101) provided at one end or at both symmetrical ends of the glass lens (10). The cleaved surface (101) extends along the optical axis of the glass lens (10) and extends to both sides of the glass lens (10); and / or, The cut surface (101) is a plane, and the other set of opposite edges of the cut surface (101) are equidistant from the optical axis (30) of the glass lens (10).

5. The optical lens according to claim 1, characterized in that, When the end of the vent groove (201) near the center of the plastic lens (20) is spaced apart from the edge of the optical effective part (203), the mechanism part (204) between the optical effective part (203) and the vent groove (201) has an annular plane, and the annular plane is connected to the vent groove (201).

6. The optical lens according to claim 5, characterized in that, The distance H1 from the inner edge of the annular plane to the optical axis of the plastic lens (20) satisfies the following relationship with the non-effective radius R1 of the plastic lens (20): 0.20 ≤ H2 / R1 ≤ 0.45; and / or, The radial width H2 of the annular plane and the distance H1 from the inner side of the annular plane to the optical axis of the plastic lens (20) satisfy the following condition: 0.4 ≤ H2 / H1 ≤ 0.

6.

7. The optical lens according to claim 1, characterized in that, The opening width B of the vent groove (201) at the end near the center of the plastic lens (20) is less than or equal to the opening width C of the end of the vent groove (201) away from the center of the plastic lens (20); the depth D of the vent groove (201) is less than or equal to half the edge thickness of the plastic lens (20); the radial length F of the vent groove (201) is greater than the depth D of the vent groove (201). The opening width B of the vent groove (201) near the center of the plastic lens (20) satisfies the following relationship with the radial length F of the vent groove (201): 7 ≥ F / B ≥ 0.

5.

8. The optical lens according to any one of claims 1 to 5, characterized in that, The plastic lens (20) also includes a feed port (202), the number of which is one, the feed port (202) is disposed on the outer peripheral surface of the mechanism part (204), and the feed port (202) is disposed to avoid the air escape groove (201); The cutting edge structure is correspondingly arranged with the feed inlet (202) so that the cutting edge structure and the feed inlet (202) are arranged in the same straight line direction.

9. The optical lens according to claim 8, characterized in that, The included angle between the feed inlet (202) and the adjacent vent groove (201) Satisfy: 20°≤ ≤180°.

10. The optical lens according to any one of claims 1 to 5, characterized in that, The number of cut edges (101) on a glass lens (10) is one or two; the number of venting grooves (201) on one side surface of the mechanism part (204) of a plastic lens (20) is greater than or equal to one and less than or equal to four. When the number of venting grooves (201) on one side surface of the mechanism part (204) is two, the two venting grooves (201) are arranged opposite to each other; when the number of venting grooves (201) on one side surface of the mechanism part (204) is four, the included angle between two adjacent venting grooves (201) is equal.

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