Telephoto lens

Abstract

The utility model discloses a telephoto lens, and belongs to the technical field of camera modules. The telephoto lens includes: a lens barrel having a first barrel end and a second barrel end; the first lens comprises a light-transmitting part and an edge part located on the periphery of the light-transmitting part, and the edge part is arranged on the end face of the first barrel end; and the second lens is arranged in the lens barrel, the second lens is located between the first lens and the second barrel end, the optical axis of the second lens is arranged along the optical axis of the first lens, and the diameter of the second lens is smaller than that of the first lens. The telephoto lens provided by the utility model can consider both large aperture and small volume specification.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of camera modules, and particularly relates to a long-focus lens. BACKGROUND

[0002] Long-focus lenses are usually configured in camera modules to realize long-distance shooting. The aperture specification of a long-focus lens determines the long-focus shooting performance to some extent. With the increasing demand for shooting quality, the aperture of the lens is also increasing, but the volume of the lens is also increasing accordingly.

[0003] Reference Figure 1 In a smart terminal such as a smart phone, the long-focus lens includes a lens barrel 1 and a plurality of lenses arranged in the lens barrel 1 along the optical axis direction; in order to meet the demand for a large aperture, the diameter of the lens barrel 1 and the first lens 2 on the light-in side is also relatively large, which to some extent increases the difficulty of application of the large-aperture long-focus lens, especially on a thin smart phone terminal, the space for the long-focus lens is limited, which limits the use range of the large-aperture long-focus lens. SUMMARY

[0004] The application provides a long-focus lens, which aims to at least solve the technical problem that the diameter specification of the long-focus lens is large and the application range is limited. To this end,

[0005] In one aspect of the application, a long-focus lens is provided, which includes:

[0006] The lens barrel has a first barrel end and a second barrel end;

[0007] The first lens includes a light-transmitting part and an edge part around the light-transmitting part, and the edge part is arranged on the end face of the first barrel end;

[0008] The second lens is arranged in the lens barrel, the second lens is located between the first lens and the second barrel end, and the optical axis of the second lens is arranged along the optical axis of the first lens, and the diameter of the second lens is smaller than the diameter of the first lens.

[0009] In some embodiments, a first stop opening is formed on the side of the edge part close to the second lens, and the first stop opening is clamped on the end face and the inner wall of the first barrel end.

[0010] In some embodiments, a limiting support is formed on the inner wall of the lens barrel, and the limiting support is arranged on the side of the edge part close to the second lens.

[0011] In some embodiments, the long-focus lens further includes a light-shielding structure, and the light-shielding structure covers the edge part.

[0012] In some embodiments, the light shielding structure comprises a light blocking piece covering a side of the edge portion away from the second lens.

[0013] In some embodiments, a side of the light blocking piece close to the lens barrel is provided with a reinforcing rib, a side of the edge portion away from the second lens is provided with a second stopper, and the reinforcing rib is engaged in the second stopper.

[0014] In some embodiments, the light shielding structure further comprises an ink coating layer provided on the edge portion.

[0015] In some embodiments, the light shielding structure further comprises a glue coating layer provided on the edge portion, and the ink coating layer is provided on a surface of the glue coating layer.

[0016] In some embodiments, the glue coating layer is an elastic glue layer.

[0017] In some embodiments, the light shielding structure comprises:

[0018] a light blocking piece covering a side of the edge portion away from the second lens;

[0019] an ink coating layer covering a circumferential side of the edge portion.

[0020] The embodiments of the present application have at least the following beneficial effects:

[0021] The long-focus lens provided by the embodiments of the present application comprises a lens barrel and a plurality of lenses arranged in the lens barrel along the optical axis direction; the first lens on the light inlet side comprises a light transmission portion and an edge portion located around the light transmission portion, and the edge portion is arranged on the end surface of one side barrel end of the lens barrel instead of being engaged in the lens barrel, so that in the case of the same lens aperture and the first lens, the diameter specification of the lens barrel can be reduced to a certain extent, thereby reducing the overall specification of the lens as a whole, facilitating assembly and use, and helping to expand the application range; on the other hand, since the first lens is located outside the lens barrel, the diameter specification of the first lens can be made larger under the condition of the same lens barrel, which can expand the lens aperture to a certain extent, thereby obtaining higher shooting performance and helping to expand the application range of the long-focus lens. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1A structural schematic diagram of a long-focus lens in the prior art is shown.

[0024] Figure 2 A structural schematic diagram of a long-focus lens in the prior art is shown. Figure 1

[0025] Figure 3 A structural schematic diagram of a long-focus lens in the prior art is shown. Figure 2

[0026] Figure 4 A structural schematic diagram of a long-focus lens in the prior art is shown. Figure 2

[0027] Figure 5 A partial enlarged view Y in the prior art is shown. Figure 2

[0028] Figure 6 A partial enlarged view X in the prior art is shown. Figure 2

[0029] Figure 7 A structural schematic diagram of a long-focus lens in the prior art is shown. Figure 2

[0030] Figure 8 A structural schematic diagram of another long-focus lens in the present application is shown.

[0031] Figure 9 A partial enlarged view Z in the prior art is shown. Figure 8

[0032] Reference signs:

[0033] 1-lens barrel, 11-first lens barrel end, 111-barrel end face, 12-second lens barrel end, 13-limiting support platform, 131-support platform face, 131a-flow-limiting inclined surface, 14-supporting support platform, 15-separation ring;

[0034] 2-first lens, 21-light-transmitting part, 22-edge part, 221-backlight surface, 222-light-incident surface, 223-circumferential side surface, 224-first stop opening, 225-second stop opening;

[0035] 3-second lens;

[0036] 4-light-blocking structure, 41-light-blocking piece, 411-avoiding inclined surface, 42-stiffening rib, 43-ink coating layer, 44-glue coating layer. DETAILED DESCRIPTION

[0037] ​​​​​​​With reference to the drawings and specific embodiments, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] In addition, the reference numbers and / or reference letters can be repeated in different examples in the present application, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0039] The present application will be described below in conjunction with the drawings and specific embodiments:

[0040] In the lens barrel of the long-focus lens, a plurality of lenses are arranged along the optical axis direction, and the diameter specification of the first lens on the light-in side determines the aperture of the lens. With the increasing thinness of various terminals with shooting functions such as smart phones and tablets, the available installation space for the lens is also becoming smaller and smaller. In order to meet the long-focus shooting performance requirements, the diameter specification of the first lens on the light-in side of the long-focus lens is usually large, which makes it difficult to adapt and install the long-focus lens to thin smart phones and other terminals, to some extent, limiting the application range of the long-focus lens.

[0041] Therefore, the embodiments of the present application provide a long-focus lens, which aims to solve the technical problem of large diameter specification of the long-focus lens and limited application range to some extent.

[0042] Referring to Figures 2 to 4 In some embodiments, the long-focus lens comprises a lens barrel 1, a first lens 2 and a second lens 3; wherein the first lens 2 and the second lens 3 are arranged at intervals along the optical axis direction O.

[0043] The lens barrel 1 is internally provided with a barrel cavity as a channel for light to pass through. The two ends of the lens barrel 1 are respectively provided as a first lens barrel end 11 and a second lens barrel end 12, and the first lens barrel end 11 is provided as one end of the light-in side of the long-focus lens, and the second lens barrel end 12 can be provided as one end of the light-out side of the long-focus lens.

[0044] The first lens 2 is arranged at the light inlet side of the lens barrel 1, and external light rays enter the lens barrel 1 after passing through the first lens 2. The first lens 2 comprises a light-transmitting portion 21 and an edge portion 22 located around the light-transmitting portion 21. The edge portion 22 is configured as a fixed portion of the first lens 2, and is arranged on the end surface of the first lens barrel end 11. That is, the radial edge of the first lens 2 is not clamped and limited in the lens barrel 1, so that in the case that the diameter specification of the light-transmitting portion 21 of the first lens 2 is fixed, the specification of the first lens barrel end 11 only needs to meet the light transmission of the light-transmitting portion 21, and thus the inner diameter of the first lens barrel end 11 can be larger than the diameter of the light-transmitting portion 21, and does not need to be larger than the diameter of the first lens 2. Therefore, compared with the mode that the first lens 2 is wrapped in the lens barrel 1, the diameter specification of the lens barrel 1 in the embodiment can be made smaller, which helps to reduce the size of the long-focus lens as a whole, and to a certain extent, helps to expand the application range while the lens aperture is taken into account.

[0045] The second lens 3 is arranged in the lens barrel 1, and is other lenses after the first lens 2 in the long-focus lens, and the number thereof can be one or a lens group composed of multiple lenses. The diameter specification of the first lens 2 is larger than that of the second lens 3, so as to meet the long-focus shooting requirements of large aperture and large light.

[0046] The long-focus lens provided by the embodiment of the application comprises a lens barrel and multiple lenses arranged in the lens barrel along the optical axis direction; the first lens at the light inlet side comprises a light-transmitting portion and an edge portion located around the light-transmitting portion, and the edge portion is arranged on the end surface of one side end of the lens barrel instead of being clamped in the lens barrel, so that in the case that the lens aperture and the first lens are of the same specification, the diameter specification of the lens barrel can be reduced to a certain extent, so as to reduce the overall size of the lens as a whole, facilitate assembly and use, and help to expand the application range. On the other hand, since the first lens is located outside the lens barrel, the diameter specification of the first lens can be made larger under the condition that the lens barrel is of the same specification, so as to expand the lens aperture to a certain extent, thereby obtaining higher shooting performance, and helping to expand the application range of the long-focus lens.

[0047] Referring to Figure 2 , Figure 3 and Figure 4 , in some embodiments, the side surface of the edge portion 22 close to the first lens barrel end 11 can be a back light surface 221 connected to the end surface 111 of the first lens barrel end 11.

[0048] Correspondingly, a side surface of the edge portion 22 away from the first lens barrel end 11 is a light-incident surface 222, and a circumferential side surface 223 of the edge portion 22 is located between the light-incident surface 222 and the light-reflecting surface 221; wherein the light-incident surface 222 and the circumferential side surface 223 can be located outside the first lens barrel end 11.

[0049] In some embodiments, considering that the edge portion 22 is fixed on the barrel end face 111 of the first lens barrel end 11, in order to further improve the installation positioning accuracy of the first lens 2, a first stop 224 can be formed on the edge portion 22, the first stop 224 is matched and clamped with the barrel end face 111 and the inner wall surface of the first lens barrel end 11, thereby realizing positioning in the axial and radial directions of the first lens 2, thereby ensuring the assembly accuracy of the first lens 2.

[0050] Generally, the first stop 224 can be formed on the light-reflecting surface 221 and the circumferential side surface 223, so that part of the circumferential side surface 223 is radially recessed, so that part of the edge portion 22 can be embedded in the barrel cavity of the first lens barrel end 11, thereby realizing radial limiting and maintaining the positional stability of the first lens 2.

[0051] In some embodiments, the edge portion 22 can be fixed on the end face of the first lens barrel end 11 by adhesive material. That is, the light-reflecting surface 221 is bonded to the barrel end face 111 of the first lens barrel end 11, thereby simplifying the installation operation of the first lens barrel end 11 to some extent.

[0052] In the case where the first stop 224 is provided on the light-reflecting surface 221, the surface of the first stop 224 can be respectively bonded to the barrel end face 111 and the inner wall surface of the first lens barrel end 11, thereby improving the bonding strength and positioning reliability.

[0053] Referring to Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, a limiting support 13 can also be formed on the inner wall surface of the lens barrel 1, the limiting support 13 is arranged on the side of the edge portion 22 close to the second lens 3, forming a limiting structure; that is, after the edge portion 22 is connected to the barrel end face 111, a limiting support structure can be formed, which limits the displacement amplitude of the first lens 2 in the direction of the second lens 3 due to deformation and other factors, thereby ensuring the stability of the axial position of the first lens 2 and ensuring the reliability of the shooting performance of the lens.

[0054] Generally, the limiting support platform 13 can be arranged on one side of the backlight surface 222, and only a small gap can be reserved between the limiting support platform 13 and the backlight surface 222, so as to avoid direct interference or abutting of the limiting support platform 13 against the backlight surface 222.

[0055] It is worth noting that, when the edge portion 22 and the barrel end surface 111 are bonded by the adhesive material, the limiting support platform 13 can form a fluid blocking structure to some extent, so as to avoid further flow of the adhesive material to the second lens 3, and ensure the light transmission function of the second lens 3.

[0056] Meanwhile, the limiting support platform 13 can extend the flow path of the adhesive material to some extent, so that the adhesive material can sufficiently fill the gap between the edge portion 22 and the lens barrel 1, and help to improve the bonding and fixing strength. Also, a certain amount of fluid adhesive material can be stored, so as to reduce the risk of lens pollution caused by flow of the fluid adhesive material.

[0057] In some embodiments, in order to further limit overflow of the fluid adhesive material on the limiting support platform 13, part of the support platform surface 131 of the limiting support platform 13 can be arranged as a flow-limiting inclined surface 131a that protrudes towards the edge portion 22.

[0058] That is, the gap between part of the support platform surface 131 and the edge portion 22 is further reduced by the flow-limiting inclined surface 131a, and the flow difficulty of the fluid adhesive material is increased, so as to limit overflow.

[0059] Generally, the farthest part of the flow-limiting inclined surface 131a to the support platform surface 131 is the edge portion of the support platform surface 131, that is, the edge high point B of the limiting support platform 13 is the edge high point B of the flow-limiting inclined surface 131a, and the distance from the remaining non-inclined surface part of the support platform surface 131 to the first lens 2 is greater than the distance from the edge high point B of the flow-limiting inclined surface 131a to the first lens 2.

[0060] In some embodiments, the second lens 3 is arranged close to one side of the first lens 2, and in order to avoid pollution of the lens surface of the second lens 3 caused by overflow of the fluid adhesive material from the limiting support platform 13, in the stacking direction of the second lens 3 and the first lens 2, the edge high point C of the second lens 3 can be arranged to be slightly higher than the edge high point B of the support platform surface 131, so that even if the fluid adhesive material overflows, it will not directly flow to the second lens 3, thereby reducing the risk of pollution of the second lens 3.

[0061] In the case that the abutment surface 131 is provided with the limiting slope 131a, the edge high point C of the second lens 3 is arranged to be slightly higher than the edge high point B of the limiting slope 131a, which increases the difficulty of the overflow cementing material entering the second lens 3 to some extent, thereby ensuring the cleanliness of the second lens 3.

[0062] Referring to Figure 2 In some embodiments, in the case that the second lens 3 has multiple pieces, the pieces are arranged along the optical axis direction O at intervals, and a spacer 15 can be arranged between adjacent two pieces of lenses to ensure the stability of the posture of the lenses and the spacing between adjacent lenses.

[0063] Referring to Figure 2 and Figure 3 In some embodiments, in the long-focus lens for long-focus shooting, the diameters of the light transmission portions of the multiple pieces of lenses along the light path direction O generally show a trend of decreasing; accordingly, the inner barrel diameter of the lens barrel 1 also gradually decreases. In order to reduce the overall volume of the lens 1, the overall specification of the lens barrel 1 can be arranged in the form of a tapered barrel, and the diameter gradually decreases along the light direction.

[0064] Alternatively, the lens barrel 1 can be arranged in the form of a barrel member and generally in the form of a straight cylinder. According to the diameter specifications of each lens, the diameter specifications of the barrel region corresponding to each lens can be flexibly arranged. For example, the region where the first lens 2 is arranged can be arranged as a relatively large-diameter barrel segment, and the region where the second lens 2 is arranged can be arranged as a relatively small-diameter barrel segment, so as to reduce the volume of the lens while meeting the lens fixation requirements.

[0065] In some embodiments, in order to facilitate assembly and maintain the assembly precision of each lens, the lenses in the lens barrel 1 can be sequentially assembled along the light direction O, that is, the second lens 3 or multiple pieces of the second lens 3 are assembled first, and then the first lens 2 is assembled.

[0066] Correspondingly, a support abutment 14 can be arranged in the second lens barrel end 12, and the support abutment 14 is supported on one side edge of the second lens 2 to achieve installation.

[0067] The second lens 3 can also be bonded to the support abutment 14 and / or the inner wall of the lens barrel 1 by a cementing material, so as to take into account the stability of fixation and the convenience of assembly operation.

[0068] Referring to Figure 2 , Figure 6 and Figure 7 In some embodiments, in order to avoid stray light from entering the first lens 2 to interfere with imaging, the long-focus lens further comprises a light shielding structure 4 covering the edge portion 22, which is used to block stray light from entering the first lens 2 and the lens barrel 1 through the edge portion 22.

[0069] It is worth mentioning that the coverage area of the light shielding structure 4 should be based on the principle of blocking stray light from passing through the edge portion 22, and strictly cover the light receiving surface 222 and the circumferential side surface 223, and can also block the back light surface 221 according to actual needs.

[0070] In some embodiments, the light shielding structure 4 can adopt an independent cover mounted on the first lens 2 for covering the edge portion 22, thereby simplifying the light shielding structure and being able to simplify the installation operation to a certain extent.

[0071] Specifically, the light shielding structure 4 can include a light shielding piece 41, which can cover one side of the edge portion 22 away from the second lens 3, that is, the light shielding piece 41 can cover the light receiving surface 222 to block external light from entering the edge portion 22.

[0072] Generally, the light shielding piece 41 can be arranged as a ring piece matched to cover the substantially annular light receiving surface 22, thereby realizing integrated regional light shielding, ensuring light shielding performance, and also being able to simplify positioning and installation operation, improve assembly efficiency and precision.

[0073] In some embodiments, the light receiving side surface of the light transmitting portion 21 has a certain curvature, and the light receiving angle also has a certain angle relative to the optical axis, and the light shielding piece 41 has a certain thickness. Under a certain angle, the light shielding piece 41 has a risk of blocking the light.

[0074] Therefore, the side surface of the light shielding piece 41 close to the light transmitting portion 21 can be arranged as a clearance slope 411, which is arranged as a slope inclined away from the light transmitting portion 21, and the bottom surface of the light shielding piece 41 close to the light receiving surface 221 completely covers the light receiving surface 221, thereby being able to utilize the clearance slope 411 to reduce the risk of blocking the obliquely incident light, and also taking into account the function of the light shielding piece 41 to block stray light.

[0075] The inclination angle of the clearance slope 411 can be correspondingly arranged according to the field angle of the telephoto lens, based on the principle of avoiding interference with normal light.

[0076] It is worth mentioning that the inclination angle of the clearance slope 411 should not be too large, so as not to cause the structural strength and shape maintaining ability of the light shielding piece 41 to deteriorate.

[0077] In some embodiments, in order to improve the structural strength and shape maintaining ability of the light shielding piece 41, a reinforcing rib 42 can be arranged on one side of the light shielding piece 41.

[0078] Generally, the reinforcing rib 42 can be arranged in a ring shape matching the shape of the light-blocking piece 41, so as to strengthen the light-blocking piece 41 as a whole, maintain the shape, and improve the anti-deformation performance.

[0079] In some embodiments, in order to avoid the reinforcing rib 42 from blocking the light entering the lens, the reinforcing rib 42 can be arranged on the side surface of the light-blocking piece 41 close to the light-receiving surface 221. That is, the radial cross section of the overall structure of the light-blocking piece 41 and the reinforcing rib 42 is generally inverted L-shaped.

[0080] Generally, the reinforcing rib 42 and the light-blocking piece 41 can be integrally formed and fixed on the edge portion 22 as a whole by the adhesive material, so as to facilitate the production and positioning assembly.

[0081] In some embodiments, in order to avoid the reinforcing rib 42 from protruding from the circumferential side surface 223 of the edge portion 22, so as to increase the interference risk of the reinforcing rib 42 with the peripheral device, a second stop 225 can be arranged on the side of the edge portion 22 away from the second lens 3, and the reinforcing rib 42 can be engaged in the second stop 225.

[0082] It is worth noting that the depth and width of the second stop 225 are generally matched with the width and height of the reinforcing rib 42.

[0083] Referring to Figure 8 and Figure 9 In some embodiments, in order to reduce the influence of the interference light entering the lens through the edge portion 22 on the imaging, the light-blocking structure 4 can further include an ink coating layer 43, which can be arranged on the surface of the edge portion 22.

[0084] Generally, the ink coating layer 43 can cover all the surfaces of the edge portion 22; or according to the actual assembly situation, the area exposed to the outside and at risk of entering the light can be covered with the ink coating layer 43; and the specific arrangement can be flexibly set according to the actual needs, so as to balance the light-blocking effect and the assembly and processing efficiency.

[0085] The ink of the ink coating layer 43 can be black or other colors with compatible stability and light-blocking performance.

[0086] In some embodiments, in order to maintain the stability of the ink coating layer 43, glue can be coated on the surface of the edge portion 22 to form a glue coating layer 44, and then the ink coating layer 43 is arranged on the glue coating layer 44, so as to strengthen the stability of the ink coating layer 43 by the adhesion of the glue coating layer 44.

[0087] In some embodiments, in order to avoid the ink coating layer 43 from peeling off when being pressed or scratched, the adhesive layer 44 can be set as an elastic adhesive layer, i.e. using adhesive materials with certain elastic ability after curing, such as silica gel, polyurethane, etc.

[0088] It is worth mentioning that when selecting the adhesive material involved in the embodiments of the present application, the influence of the temperature during baking and curing on the lens and the lens barrel should be considered, and in principle, adhesive materials with low-temperature baking and curing should be selected to avoid deformation of the lens and the lens barrel caused by excessively high temperature.

[0089] Generally, the baking temperature can be selected as 30-90°C. Alternatively, UV light curing process can also be used for curing.

[0090] Referring to Figure 2 , Figure 8 and Figure 9 In some embodiments, the ink coating layer 43 can be used in combination with the light blocking piece 41, i.e. the light blocking piece 41 can be covered on the light receiving surface 222, and the ink coating layer 43 can be covered on the circumferential side surface 223. Alternatively, the ink coating layer 43 can also be arranged on the surface of the edge portion 22, and the light blocking piece 41 can be arranged on the light receiving surface 222.

[0091] It is worth mentioning that the light blocking piece 41 has certain thickness specifications, and has certain requirements for structural strength and assembly convenience, but has stable light blocking stability; the ink coating layer 43 is simple to process, but is easy to peel off due to external scratching, etc.; and can be used flexibly according to actual needs.

[0092] In the present application, unless specifically defined and limited otherwise, "on" of a first feature on a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "upper" of a first feature on a second feature include that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. "Below", "under" and "lower" of a first feature on a second feature include that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0093] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0094] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0095] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0096] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0097] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0098] In addition, the technical solutions among various embodiments can be combined with each other, but it must be based on that a person skilled in the art can realize, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0099] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and deformations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A long focus lens characterized by, The utility model relates to a long-focus lens, including: A lens barrel has a first barrel end and a second barrel end; A first lens includes a light-transmitting part and an edge part around the light-transmitting part, the edge part is arranged on the end face of the first barrel end; A second lens is arranged in the lens barrel, the second lens is between the first lens and the second barrel end, and the optical axis of the second lens is arranged along the optical axis of the first lens, and the diameter of the second lens is smaller than the diameter of the first lens.

2. The telephoto lens of claim 1, wherein, The edge part is provided with a first stop opening on the side close to the second lens, and the first stop opening is clamped on the end face and the inner wall of the first barrel end.

3. The telephoto lens of claim 2, wherein, A limiting support is arranged on the inner wall of the lens barrel, and the limiting support is arranged on the side of the edge part close to the second lens.

4. The telephoto lens of claim 1, wherein, The long-focus lens further includes a light-shielding structure, and the light-shielding structure covers the edge part.

5. The telephoto lens of claim 4, wherein, The light-shielding structure includes a light-blocking piece, and the light-blocking piece covers the side of the edge part away from the second lens.

6. The telephoto lens of claim 5, wherein, The side of the light-blocking piece close to the lens barrel is provided with a reinforcing rib, and the side of the edge part away from the second lens is provided with a second stop opening, and the reinforcing rib is clamped in the second stop opening.

7. The telephoto lens of claim 4, wherein, The light-shielding structure further includes an ink coating layer, and the ink coating layer is arranged on the edge part.

8. The telephoto lens of claim 7, wherein, The light-shielding structure further includes a glue coating layer, and the glue coating layer is arranged on the edge part, and the ink coating layer is arranged on the surface of the glue coating layer.

9. The telephoto lens of claim 8, wherein, The glue coating layer is an elastic glue layer.

10. The telephoto lens of claim 4, wherein, The light-shielding structure includes: A light-blocking piece covers the side of the edge part away from the second lens; An ink coating layer covers the circumferential side of the edge part.

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