WO2021184250A1 - 镜头及其组装方法与取像模组、电子设备 - Google Patents

镜头及其组装方法与取像模组、电子设备 Download PDF

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Publication number
WO2021184250A1
WO2021184250A1 PCT/CN2020/079963 CN2020079963W WO2021184250A1 WO 2021184250 A1 WO2021184250 A1 WO 2021184250A1 CN 2020079963 W CN2020079963 W CN 2020079963W WO 2021184250 A1 WO2021184250 A1 WO 2021184250A1
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WIPO (PCT)
Prior art keywords
lens
side wall
coupling groove
buckle
card slot
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Application number
PCT/CN2020/079963
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English (en)
French (fr)
Inventor
胡德忠
吴俊甫
邹海荣
Original Assignee
南昌欧菲精密光学制品有限公司
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Application filed by 南昌欧菲精密光学制品有限公司 filed Critical 南昌欧菲精密光学制品有限公司
Priority to PCT/CN2020/079963 priority Critical patent/WO2021184250A1/zh
Publication of WO2021184250A1 publication Critical patent/WO2021184250A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Definitions

  • the invention relates to the technical field of lens assembly, in particular to a lens, an assembly method thereof, an image capturing module, and electronic equipment.
  • the lens is a key part of various electronic equipment with camera and photography functions.
  • Common lenses include a lens barrel and a lens group in the lens barrel.
  • the light is imaged on the surface of the photosensitive element after passing through the lens group.
  • the lens group is fixed in the lens barrel by pressing the pressure ring against the first lens near the image side of the lens group, and the pressure ring and the lens barrel are fixed by glue adhesion.
  • glue adhesion part of the light entering the lens will be reflected on the surface of the glue, causing glue stray light to affect the imaging quality of the lens.
  • the glue will soften and affect the fixed position of the lens group in the lens barrel, thereby affecting the image quality.
  • a lens and an assembly method thereof, an image capturing module, and electronic equipment are provided.
  • the lens barrel includes a top wall and a side wall, the top wall and the side wall are surrounded to form an accommodating cavity, the end surface of the side wall away from the top wall is the bottom end surface of the side wall, and the side wall A card slot is opened on the top, one end of the card slot extends through the bottom end surface, the card slot has two opposite side wall surfaces, and at least one side wall surface of the two opposite side wall surfaces in the card slot A coupling groove is opened on the upper side, and the coupling groove is opened on the side wall surface at a position close to the bottom of the card groove;
  • the lens group includes a first lens and a final lens, the lens group is located in the accommodating cavity, and the first lens abuts against the top wall;
  • the pressing ring includes a body part and a buckle part, the body part is located in the accommodating cavity and is located on a side of the first lens facing away from the top wall and abuts against the first lens, the buckle The part is located at the end of the groove, and the part of the buckle part enters into the coupling groove by hot melting, and is fixedly connected with at least one inner wall surface of the coupling groove.
  • An imaging module includes a photosensitive element and the lens described in any one of the above embodiments.
  • the photosensitive element has a photosensitive surface, and light rays pass through the lens to form an image on the photosensitive surface of the photosensitive element.
  • the above lens is used in the imaging module, and the lens group can be fixed in the lens barrel without the need to glue the pressure ring and the lens barrel, effectively avoiding the generation of glue stray light, and avoiding the glue in the baking process.
  • the softening causes the problem that the fixed position of the lens group in the lens barrel changes, thereby improving the imaging quality of the imaging module.
  • An electronic device includes a housing and the above-mentioned image capturing module, and the image capturing module is installed on the housing.
  • the lens group can be fixed in the lens barrel without the need to glue the pressure ring and the lens barrel, which effectively avoids the generation of glue stray light and avoids the baking process.
  • the softening of the glue causes the problem that the fixed position of the lens group in the lens barrel changes, thereby improving the imaging quality of the electronic device.
  • a lens assembly method for assembling the above lens includes:
  • the buckle portion is heated to melt part of the buckle portion into the coupling groove and contact with at least one inner wall surface in the coupling groove.
  • FIG. 1 is a schematic diagram of the structure of a lens in an embodiment of the application
  • FIG. 2 is a schematic diagram of the structure of the lens shown in FIG. 1 from another angle;
  • Fig. 3 is an exploded view of some parts of the lens described in Fig. 2;
  • FIG. 4 is a schematic diagram of the buckle part of the lens entering the card slot according to an embodiment of the application.
  • FIG. 5 is a schematic diagram of the hot melt head in the lens shown in FIG. 4 entering into the card slot;
  • FIG. 6 is a schematic diagram of the hot melt head abutting against the buckle portion of the lens shown in FIG. 4; FIG.
  • FIG. 7 is a schematic diagram of the buckle part of the lens shown in FIG. 4 melted into the coupling groove;
  • FIG. 8 is a schematic diagram of the buckle portion and the slot in the lens shown in FIG. 4 being fixedly connected;
  • FIG. 9 is a schematic diagram of the hot melt head of the lens entering into the card slot according to another embodiment of the application.
  • FIG. 10 is an exploded view of some parts of a lens according to another embodiment of the application.
  • FIG. 11 is a schematic diagram of the lens shown in FIG. 1 from another angle;
  • FIG. 12 is a schematic cross-sectional view of the lens shown in FIG. 11;
  • FIG. 13 is a schematic diagram of an image capturing module according to an embodiment of the application.
  • FIG. 14 is a schematic diagram of an electronic device according to an embodiment of the application.
  • a lens 100 includes a lens barrel 110, a lens group 130 and a pressure ring 140.
  • the lens barrel 110 includes a top wall 111 and a side wall 113.
  • the top wall 111 and the side wall 113 surround a receiving cavity 115.
  • the end surface of the side wall 113 away from the top wall 111 is the bottom end surface 114 of the side wall 113.
  • the side wall 113 is provided with a clamping slot 120, the two ends of the clamping slot 120 are a start end 121 and an end 122 respectively, and the start end 121 extends through the bottom end surface 114.
  • the two opposite side wall surfaces of the card slot 120 are provided with a coupling groove 123.
  • the coupling groove 123 is opened on the two opposite side wall surfaces of the card slot 120 at a position close to the bottom of the card slot 120, and the position of the two coupling slots 123 relatively.
  • the lens group 130 includes a first lens and a final lens.
  • the lens group 130 is located in the accommodating cavity 115, and the final lens of the lens group 130 abuts against the top wall 111.
  • the pressing ring 140 includes a body part 141 and a buckle part 143.
  • the body part 141 is located in the accommodating cavity 115 and is located on a side of the first lens of the lens group 130 away from the top wall 111 and abuts against the first lens of the lens group 130.
  • the buckle portion 143 is located at the end 122 of the groove 120, and a part of the buckle portion 143 enters the coupling groove 123 by hot melting, and is fixedly connected with at least one inner wall surface of the coupling groove 123.
  • the lens 100 described above is provided with a buckle portion 143 on the pressing ring 140.
  • the buckle portion 143 is located in the groove 120 and partially enters the coupling groove 123 by heat fusion, and is fixedly connected to at least one inner wall surface of the coupling groove 123 In this way, the pressing ring 140 is fixed to the lens barrel 110.
  • the main body 141 abuts against the first lens of the lens group 130 and fixes the lens group 130 between the main body 141 and the top wall 111.
  • the lens group 130 can be fixed in the lens barrel 110 without the need for glue adhesion between the pressure ring 140 and the lens barrel 110, which avoids the influence of glue stray light on the imaging quality of the lens 100 when glue is used for adhesion, and also It can avoid the effect of the softening of the glue in the baking process on the imaging quality of the lens 100 from changing the fixed position of the lens group 130 in the lens barrel 110.
  • the lens in the lens group 130 closest to the top wall 111 is the last lens of the lens group 130.
  • the lens closest to the bottom end surface 114 in the group 130 is the first lens of the lens group 130, and the remaining lenses in the lens group 130 are located between the first lens and the final lens.
  • a light entrance hole 112 is opened in the middle of the top wall 111, and the lens group 130 exposes the lens 100 at the light entrance hole 112, so that light can pass through the light entrance hole 112 of the top wall 111 through the lens group. 130 enters the inside of the lens 100.
  • the middle portion of the top wall 111 extends outward to form a protrusion, and the light entrance hole 112 is formed on the protrusion.
  • a protective cover with good light permeability may be provided at the light entrance hole 112 to protect the lens group 130 inside the lens 100.
  • the lens group 130 may be any combination of a plurality of convex lenses or concave lenses, and the pitch of the plurality of convex lenses or concave lenses is fixed to form the lens group 130 of the lens 100 together.
  • the buckle portion 143 when the buckle portion 143 is placed at the end 122 of the groove 120, the buckle portion 143 is partially melted by hot melting and then enters the coupling groove 123. When the buckle portion 143 is melted After being partially cooled, it will be fixedly connected with at least one inner wall surface of the coupling groove 123. Specifically, in a method for assembling the lens 100, the lens 100 is assembled. As shown in FIG. 3, the lens group 130 is first placed in the accommodating cavity 115, so that the last lens of the lens group 130 is in contact with the top wall 111 .
  • the buckle portion 143 is opposed to the starting end 121 of the groove 120, and the main body portion 141 is placed in the accommodating cavity 115 along the direction of the dashed arrow in FIG. 3 in the direction of the optical axis of the lens group 130.
  • FIG. 4 when the main body 141 enters the accommodating cavity 115 in the direction of the dashed arrow in FIG. 4 .
  • the buckle portion 143 moves in the direction of the dashed arrow in FIG. 4 to the end 122 of the slot 120 in the direction of the optical axis, referring to FIG. 5 and FIG.
  • the dashed arrow in FIG. 5 extends into the slot 120 until it abuts on the buckle portion 143. Referring to FIG.
  • the hot melt head 150 heats the buckle portion 143 to melt part of the buckle portion 143 and flow into the coupling groove 123, and then the hot melt head 150 is taken out.
  • the part of the buckle portion 143 melted and flows into the coupling groove 123 is cooled and solidified, it will be fixedly connected with the inner wall surface of the coupling groove 123 to realize the fixing of the pressing ring 140 and the lens barrel 110.
  • the buckle The portion where the portion 143 is fixedly connected to the inner wall surface of the coupling groove 123 is the portion of the snap portion 143 that is solidified by heat melting.
  • the buckle portion 143 when part of the buckle portion 143 enters the coupling groove 123 by hot melt, the buckle portion 143 needs to be made of a thermoplastic material so that the buckle portion 143 can be heated by the hot melt head 150. Melt into the coupling groove 123, and solidify after cooling to be fixedly connected with the inner wall surface of the coupling groove 123.
  • the end 122 of the card slot 120 has an end end surface 124, and the end end surface 124 and the two opposite side walls in the card slot 120 are jointly enclosed to form the card slot 120.
  • the buckle portion 143 abuts the end surface 124 and the two opposite side walls of the slot 120.
  • the end end surface 124 and the two opposite side wall surfaces in the groove 120 can both limit the position of the groove 120, so that the buckle portion 143 is not easy to be caught in the groove.
  • the tank 120 shakes.
  • FIG. 1 it can be understood that, in the embodiment shown in FIG.
  • the buckle portion 143 when the hot melt head 150 abuts the surface of the buckle portion 143 away from the end face 124, the buckle portion 143 is heated, and before the heating, the buckle portion 143 is heated.
  • the portion of the portion 143 close to the bottom end surface 114 should be reserved for heating and melting.
  • the coupling groove 123 is formed on the two opposite sidewall surfaces of the card groove 120 spaced from the end surface 114. The hot melt head 150 heats the entire buckle portion 143 until the surface of the hot melt head 150 abutting the buckle portion 143 is flush with the inner wall surface of the coupling groove 123 opposite to the end end surface 124, and the clamping is stopped.
  • the heating of the buckle portion 143 controls the heating time of the buckle portion 143 by the hot melt head 150. At this time, when the buckle portion 143 is partially melted and cooled and solidified, the surface of the buckle portion 143 away from the end end surface 124 is flush with an inner wall surface in the coupling groove 123 opposite to the end end surface 124, thus, the buckle portion 143 Less materials are used, which can save production costs.
  • there can be other settings for the heating time of the buckle portion 143 so that the position of the buckle portion 143 away from the surface of the end face 124 after heating can also have other settings. For example, in other embodiments, when the buckle portion 143 is partially melted and cooled and solidified, the surface of the buckle portion 143 away from the end end surface 124 is farther away from the end end surface 124 than the coupling groove 123.
  • only one of the two opposite sidewall surfaces of the card slot 120 may form a coupling groove 123, while in other embodiments, the two opposite sidewall surfaces of the end 122 may both have a coupling groove 123 formed.
  • the positions of the coupling grooves 123 are opposite.
  • the buckle portion 143 enters the two coupling grooves 123 by hot melt, and is fixedly connected to the inner wall surfaces of the two coupling grooves 123, thereby further improving the clamping of the buckle portion 143 The fixing effect in the groove 120.
  • the coupling groove 123 is surrounded by three inner wall surfaces.
  • a portion sufficient for heating and melting into the coupling groove 123 is reserved in the buckle portion 143 so that the portion of the buckle portion 143 can fill the entire coupling groove 123 after heating.
  • the three inner wall surfaces of the buckle portion 143 and the coupling groove 123 are all fixedly connected, thereby increasing the connection area between the buckle portion 143 and the side wall 113, and further improves the clamping portion 143 in the groove 120 Fixed effect.
  • a baking process is generally required to release the stress of the internal parts of the lens.
  • the temperature of the common baking process is about 80°, and the common glue will soften during the baking process. Therefore, if the pressure ring and the lens barrel are connected by glue, when the lens enters the baking process, the glue between the pressure ring and the lens barrel will soften, causing the fixed position of the pressure ring in the lens to shift. This affects the fixed position of the lens group.
  • the buckle portion 143 of the pressure ring 140 enters the coupling groove 123 by hot melting, and is fixedly connected to the inner wall surface of the coupling groove 123.
  • the temperature of the baking process does not melt the buckle portion 143, that is, the baking process does not affect the fixing effect of the buckle portion 143 in the groove 120. In this way, it is possible to avoid the situation that the fixing position of the lens group 130 is affected by the softening of the glue during the baking process, thereby ensuring the imaging quality of the lens 100.
  • the hot melt head 150 may not enter the slot 120 along the extending direction of the slot 120, but directly along the dashed arrow direction in FIG. 9 in the direction perpendicular to the optical axis. It enters into the slot 120 from the end 122 and abuts against the surface of the buckle portion 143 close to the outer surface of the side wall 113. At this time, when the hot melt head 150 heats the buckle portion 143, the portion of the buckle portion 143 close to the outer surface of the side wall 113 melts and flows into the coupling groove 123.
  • the hot melt head 150 can enter the card slot 120 from different directions to heat the buckle portion 143, and different processing methods can be selected according to the different extending directions of the card slot 120.
  • the card slot 120 extends in a direction perpendicular to the bottom end surface 114.
  • the hot melt head 150 can also enter the slot 120 in the direction of the dashed arrow in FIG.
  • the card slot 120 can also extend in a direction inclined to the bottom end surface 114.
  • the card slot 120 can also be provided with corners, that is, the card slot 120 can be made of two More than one channel is formed together.
  • the hot melt head 150 is not easy to enter the card slot 120 along the extending direction of the card slot 120, and can directly enter the card slot 120 from the end 122 in the direction of the dashed arrow in FIG. 9 in the direction perpendicular to the optical axis.
  • the buckle parts 143 abut against each other.
  • the card slot 120 is provided through the side wall 113. Therefore, when the side wall 113 is processed, it is only necessary to perform a slotting process on the outside of the side wall 113 to form the card slot 120. , The processing technology is more convenient.
  • the slot 120 may not penetrate the side wall 113 but is formed on the side of the side wall 113 facing the receiving cavity 115. In this way, when the buckle portion 143 is located in the groove 120, the buckle portion 143 is wrapped by the side wall 113, and the buckle portion 143 and the body portion 141 will not contact the outside of the lens 100 at the groove 120, and the side wall 113 can protect the buckle portion 143 and the body portion 141 to a greater degree. It can be understood that when the hot melt head 150 is used to heat the buckle portion 143 at this time, the hot melt head 150 enters the card slot 120 from the beginning end 121 of the card slot 120 along the extending direction of the card slot 120.
  • the number of the card slots 120 is not limited.
  • the card slots 120 can be provided with multiple, such as two, three, or four, and the multiple card slots 120 are spaced along the circumferential direction of the side wall 113. set up.
  • the buckle portion 143 should also be provided in multiple accordingly. When the body portion 141 enters the containing cavity 115, one buckle portion 143 is disposed in the corresponding one of the grooves 120.
  • the plurality of card slots 120 are evenly distributed along the circumferential direction of the side wall 113.
  • the plurality of card slots 120 are evenly distributed along the circumferential direction of the side wall 113.
  • four card slots 120 are provided, and four card slots 120 are provided.
  • the grooves 120 are evenly distributed along the circumferential direction of the side wall 113. In this way, when the pressure ring 140 is fixed to the lens barrel 110, the pressure ring 140 receives a more uniform force, which makes the fixing of the pressure ring 140 more stable, and is less likely to shake due to uneven partial forces.
  • the surface of the main body 141 facing away from the side wall 113 is the inner side 142 of the main body 141, and the surface of the main body 141 facing the side wall 113 is the outer side of the main body 141, and the lens set 130 With optical axis.
  • the inner surface 142 of the main body portion 141 is gradually expanded, which can be understood as the direction of the dashed arrow in FIG. 12, the inner surface 142 of the main body portion 141 The diameter of the body portion 141 gradually increases.
  • the common pressure ring and the lens barrel connected by glue adhesion need to reserve a part of the space between the pressure ring and the lens barrel for the glue to fill, resulting in poor waterproof effect at the connection between the pressure ring and the lens barrel. It is easy to enter the inside of the lens through the connection between the pressure ring and the lens barrel, which will affect the performance of the lens. Since the lens 100 of the present application does not need to dispense glue between the main body portion 141 and the lens barrel 110, in some embodiments, the outer surface of the main body portion 141 and the inner surface of the side wall 113 can be abutted. With this arrangement, it is difficult for liquid to enter the interior of the lens 100 from the card slot 120 or from the light entrance hole 112 through the lens assembly 130 at the connection between the main body 141 and the side wall 113, thereby improving the waterproof performance of the lens 100.
  • the value range of the angle A formed by the extension surface of a side wall surface of the card slot 120 and the bottom end surface 114 may be between 10° and 90°. It can be understood that the card slot 120 can extend in a direction perpendicular to the bottom end surface 114 or oblique to the bottom end surface 114. Of course, in some embodiments, the two opposite side walls in the slot 120 are parallel to each other. In other embodiments, the two opposite side walls in the slot 120 are inclined to each other.
  • the two opposite side walls in the slot 120 gradually open to facilitate the entry of the snap portion 143 Inside the card slot 120, and facilitate the hot melt head 150 to enter the card slot 120 from the starting end 121 of the card slot 120 to heat the buckle portion 143.
  • the value range of the width B of the card slot 120 may be between 0.3 and 3 mm.
  • the space of the card slot 120 is made smaller, so as to reduce the contact area between the inside of the lens 100 at the slot 120 and the outside of the lens 100, so that The side wall 113 can better protect the pressure ring 140 and the lens group 130 inside the lens 100.
  • the value of the length C of the buckle portion 143 can be between 0.2mm-1mm, and, in some embodiments, the length of the buckle portion 143 is less than or equal to the side wall 113, so that when the buckle portion 143 is fixed in the groove 120, the buckle portion 143 will not protrude from the side wall 113 on the outside of the side wall 113, so as to prevent the buckle portion 143 from being exposed to the outside of the side wall 113. Damaged by impact.
  • the value range of the width D of the coupling groove 123 can be greater than 0 and less than or equal to 1 mm, so as to ensure that when the buckle portion 143 is partially melted, it can flow into the coupling groove 123.
  • the distance E from an inner wall surface of the coupling groove 123 opposite to the end end surface 124 to the end end surface 124 in the optical axis direction is greater than the width D of the coupling groove 123, that is, the coupling groove 123 is formed in the card at this time.
  • the height F of the buckle portion 143 should be greater than the distance E on the optical axis from the end end surface 124 to the opposite inner wall surface of the end end surface 124 in the coupling groove 123 to ensure the buckle
  • the portion of the portion 143 close to the bottom end surface 114 is reserved for heating and melting into the bonding groove 123.
  • the lens 100 can be assembled with the photosensitive element 210 to form the imaging module 200.
  • the photosensitive element 210 is disposed on the side of the side wall 113 away from the top wall 111, and the surface of the photosensitive element 210 facing the lens 100 is the photosensitive surface 211 of the photosensitive element 210.
  • the above-mentioned lens 100 is used in the imaging module 200, and the lens group 130 can be fixed in the lens barrel 110 without the need to glue the pressure ring 140 and the lens barrel 110, effectively avoiding the generation of glue stray light and at the same time. This solves the problem that the fixing position of the lens group 130 in the lens barrel 110 changes due to the softening of the glue during the baking process, thereby improving the imaging quality of the imaging module 200.
  • the above-mentioned image capturing module 200 can be applied to an electronic device 300.
  • the electronic device 300 further includes a housing 310 on which the image capturing module 200 is installed, and The light entrance hole 112 of the lens 100 is exposed to the housing, so that light can enter the electronic device 300 from the light entrance hole 112 through the lens group 130.
  • the electronic device 300 may be a device with an image capturing function, such as a surveillance camera or a video camera.
  • the above-mentioned image capturing module 200 is used in the electronic device 300, and the lens group 130 can be fixed in the lens barrel 110 without the need for glue adhesion on the pressing ring 140 and the lens barrel 110, effectively avoiding the generation of glue stray light, and at the same time
  • the problem that the fixed position of the lens group 130 in the lens barrel 110 changes due to the softening of the glue during the baking process is avoided, thereby improving the imaging quality of the electronic device 300.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present invention, “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or into a whole; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two components or the interaction relationship between two components, unless otherwise specified The limit.
  • installed can be a fixed connection or a detachable connection. , Or into a whole; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two components or the interaction relationship between two components, unless otherwise specified The limit.
  • the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.
  • the “on” or “under” of the first feature on the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch.
  • the “above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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Abstract

一种镜头(100)，包括镜筒(110)、镜片组(130)和压环(140)。镜筒(110)的顶壁(111)和侧壁(113)围设形成容纳腔(115)，侧壁(113)具有底端端面(114)。侧壁(113)开设卡槽(120)，卡槽(120)的一端延伸贯穿底端端面(114)。卡槽(120)有两个侧壁面，其中至少一个侧壁面靠近槽底的位置开设有结合槽(123)。镜片组(130)位于容纳腔(115)内，并与顶壁(111)抵接。压环(140)包括本体部(141)和卡扣部(143)，本体部(141)位于容纳腔(115)内，且位于镜片组(130)背离顶壁(111)的一侧并抵接镜片组(130)。卡扣部(143)位于卡槽(120)的末端(122)，卡扣部(143)部分热熔进入结合槽(123)，并与结合槽(123)的内壁面连接。

Description

镜头及其组装方法与取像模组、电子设备 技术领域
本发明涉及镜头装配技术领域，特别是涉及一种镜头及其组装方法与取像模组、电子设备。
背景技术
镜头是各种具备摄像、摄影功能的电子设备中较关键的零件，常见的镜头包括镜筒以及镜筒内的镜片组，光线经镜片组后于感光元件的表面成像。目前的镜头，多采用压环抵压镜片组靠近像侧的第一镜片方式将镜片组固定于镜筒内，而压环与镜筒采用胶水粘连的方式固定。但是，在目前的固定方式中，部分光线进入镜头后会在胶水的表面发生反射，产生胶水杂光影响镜头的成像质量。并且，当镜头进入烘烤制程时，胶水会发生软化而影响镜片组在镜筒内的固定位置，进而影响成像质量。
发明内容
根据本申请的各种实施例，提供一种镜头及其组装方法与取像模组、电子设备。
一种镜头，包括：
镜筒，包括顶壁和侧壁，所述顶壁和所述侧壁围设形成容纳腔，所述侧壁远离所述顶壁的端面为所述侧壁的底端端面，所述侧壁上开设有卡槽，所述卡槽的其中一端延伸贯穿所述底端端面，所述卡槽具有两个相对的侧壁面，所述 卡槽内两个相对的侧壁面中至少有一个侧壁面上开设有结合槽，且所述结合槽开设于所述侧壁面上靠近所述卡槽槽底的位置；
镜片组，包括第一镜片及末位镜片，所述镜片组位于所述容纳腔内，且所述第一镜片与所述顶壁相抵接；以及
压环，包括本体部和卡扣部，所述本体部位于所述容纳腔内，且位于所述第一镜片背离所述顶壁的一侧并抵接所述第一镜片，所述卡扣部位于所述卡槽的末端，且所述卡扣部的部分通过热熔的方式进入所述结合槽内，并与所述结合槽的至少一内壁面固定连接。
一种取像模组，包括感光元件以及上述任一实施例所述的镜头，所述感光元件具有感光面，光线经所述镜头后于所述感光元件的感光面成像。在取像模组中采用上述镜头，不需要通过对压环及镜筒进行胶水粘连即可将镜片组固定于镜筒内，有效避免了胶水杂光的产生，同时避免了烘烤制程中胶水软化导致镜片组在镜筒内的固定位置发生变化的问题，进而提高取像模组的成像质量。
一种电子设备，包括壳体以及上述的取像模组，所述取像模组安装于所述壳体上。在电子设备中采用上述取像模组，不需要通过对压环及镜筒进行胶水粘连即可将镜片组固定于镜筒内，有效避免了胶水杂光的产生，同时避免了烘烤制程中胶水软化导致镜片组在镜筒内的固定位置发生变化的问题，进而提高电子设备的成像质量。
一种镜头的组装方法，用于组装上述的镜头，所述镜头的组装方法包括：
将所述镜片组放入所述容纳腔内，使所述末位镜片与所述顶壁相抵接；
将所述本体部进入所述容纳腔内，并带动所述卡扣部进入所述卡槽内，直至所述卡扣部与所述结合槽相对；
加热所述卡扣部，使所述卡扣部的部分熔化进入所述结合槽内并与所述结 合槽内的至少一内壁面接触。
本发明的一个或多个实施例的细节在下面的附图和描述中提出。本发明的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为本申请一种实施例中的镜头的结构示意图；
图2为图1所示的镜头另一角度的结构示意图；
图3为图2所述的镜头的部分零部件的爆炸图；
图4为本申请一种实施例的镜头中卡扣部进入卡槽的示意图；
图5为图4所示的镜头中热熔头进入卡槽内的示意图；
图6为图4所示的镜头中热熔头抵接卡扣部的示意图；
图7为图4所示的镜头中卡扣部融化进入结合槽的示意图；
图8为图4所示的镜头中卡扣部与卡槽固定连接的示意图；
图9为本申请另一种实施例的镜头中热熔头进入卡槽内的示意图；
图10为本申请另一种实施例的镜头的部分零部件的爆炸图；
图11为图1所示的镜头又一角度的示意图；
图12为图11所示的镜头的剖面示意图；
图13为本申请一种实施例的取像模组的示意图；
图14为本申请一种实施例的电子设备的示意图。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“内”、“外”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
请参见图1、图2和图3，一种镜头100，包括镜筒110、镜片组130以及压环140。镜筒110包括顶壁111和侧壁113，顶壁111和侧壁113围设形成容纳腔115，侧壁113远离顶壁111的端面为侧壁113的底端端面114。侧壁113上开设有卡槽120，卡槽120的两端分别为始端121和末端122，始端121延伸贯穿底端端面114。卡槽120内两个相对的侧壁面上均开设有结合槽123，结合槽123开设于卡槽120相对的两个侧壁面上靠近卡槽120槽底的位置，且两个结合槽123的位置相对。镜片组130包括第一镜片及末位镜片，镜片组130位于容纳腔115内，且镜片组130的末位镜片与顶壁111相抵接。压环140包括本体部141和卡扣部143，本体部141位于容纳腔115内，且位于镜片组130的第一镜片背离顶壁111的一侧并抵接镜片组130的第一镜片。卡扣部143位于卡槽120的末端122，且卡扣部143的部分通过热熔的方式进入结合槽123内， 并与结合槽123的至少一内壁面固定连接。
上述镜头100，通过在压环140上设置卡扣部143，卡扣部143位于卡槽120内，并部分通过热熔的方式进入结合槽123内，与结合槽123的至少一内壁面固定连接，以此将压环140固定于镜筒110上。而本体部141抵接镜片组130的第一镜片，将镜片组130固定于本体部141与顶壁111之间。如此，不需要在压环140和镜筒110之间进行胶水粘连也能够将镜片组130固定于镜筒110内，避免了采用胶水粘连时胶水杂光对镜头100的成像质量的影响，同时也能避免烘烤制程中胶水软化导致镜片组130在镜筒110内的固定位置发生改变对镜头100的成像质量的影响。
可以理解的是，镜片组130中可设置有多片镜片，且当镜片组130位于容纳腔115内时，镜片组130中最靠近顶壁111的一镜片为镜片组130的末位镜片，镜片组130中最靠近底端端面114的一镜片为镜片组130的第一镜片，镜片组130内的其余镜片位于第一镜片及末位镜片之间。
并且，在一些实施例中，顶壁111的中间部位开设有入光孔112，镜片组130于入光孔112处露出镜头100，以便于光线能够从顶壁111的入光孔112经镜片组130进入镜头100内部。而在另一些实施例中，参考图1所示，顶壁111的中间部分向外延伸形成一凸起，入光孔112开设于该凸起上。进一步地，在一些实施例中，入光孔112处还可设置有透光性良好的保护盖，以保护镜头100内部的镜片组130。需要注意的是，在一些实施例中，镜片组130可为多片凸透镜或凹透镜的任意组合，多片凸透镜或凹透镜的间距固定，共同形成镜头100的镜片组130。
进一步地，在一些实施例中，当卡扣部143置于卡槽120的末端122时，通过热熔的方式使卡扣部143部分融化后进入结合槽123内，当卡扣部143融 化的部分冷却后会与结合槽123的至少一内壁面固定连接。具体地，在一种镜头100的组装方法中，对镜头100进行组装，参考图3所示，先将镜片组130放入容纳腔115内，使镜片组130的末位镜片与顶壁111接触。然后，使卡扣部143与卡槽120的始端121相对，将本体部141在镜片组130的光轴的方向上沿图3的虚线箭头方向放入容纳腔115内。一并参考图4所示，当本体部141在光轴的方向上沿图4中的虚线箭头方向进入容纳腔115时，会带动卡扣部143从始端121进入卡槽120内。当卡扣部143在光轴的方向上沿图4中的虚线箭头方向移动至卡槽120的末端122时，一并参考图5和图6所示，将热熔设备的热熔头150沿图5中的虚线箭头方向伸入卡槽120中直至抵接于卡扣部143上。参考图7所示，热熔头150对卡扣部143进行加热，使卡扣部143的部分融化流入结合槽123内，然后取出热熔头150。参考图8所示，当卡扣部143融化流入结合槽123的部分冷却凝固后，会与结合槽123的内壁面固定连接，以实现压环140与镜筒110的固定，此时，卡扣部143与结合槽123的内壁面固定连接的部分即为卡扣部143的经热熔凝固的部分。可以理解的是，当卡扣部143的部分通过热熔的方式进入结合槽123内时，卡扣部143需采用热塑性材料制成，以便卡扣部143在热熔头150的加热作用下能够融化进入结合槽123内，并在冷却后凝固与结合槽123的内壁面固定连接。
进一步地，参考图5所示，卡槽120的末端122具有一末端端面124，末端端面124与卡槽120内相对的两侧壁面共同围设形成卡槽120。而在一些实施例中，当卡扣部143到达卡槽120的末端122时，卡扣部143抵接末端端面124以及卡槽120内相对的两侧壁面。如此，当卡扣部143部分热熔固定于结合槽123内时，末端端面124以及卡槽120内相对的两侧壁面均能对卡槽120起限位作用，使卡扣部143不易在卡槽120内晃动。并且，可以理解的是，在图6所 示的实施例中，当热熔头150抵接卡扣部143背离末端端面124的表面，对卡扣部143进行加热，而在加热之前，卡扣部143靠近底端端面114的部分应当预留有用于加热融化的部分。另外，一并参考图7所示，在一些实施例中，结合槽123形成于卡槽120相对的两侧壁面上与末端端面114相间隔的部分。而热熔头150对卡扣部143整体进行加热，加热至热熔头150抵接卡扣部143的表面平齐于结合槽123中与末端端面124朝向相反的一内壁面时，停止对卡扣部143的加热，以此控制热熔头150对卡扣部143的加热时间。此时，当卡扣部143部分融化冷却凝固后，卡扣部143背离末端端面124的表面平齐于结合槽123中与末端端面124朝向相反的一内壁面，由此，卡扣部143的用材较少，能够节省生产成本。当然，对卡扣部143的加热时间还可有其他的设置，使加热后卡扣部143背离末端端面124的表面的位置还可有其他设定。例如，在另一些实施例中，当卡扣部143部分融化冷却凝固后，卡扣部143背离末端端面124的表面相对结合槽123更远离末端端面124。
另外，在一些实施例中，卡槽120相对的两侧壁面中可仅有一个形成结合槽123，而在另一些实施例中，末端122相对的两侧壁面均可形成有结合槽123，两结合槽123的位置相对。通过设置两个结合槽123，卡扣部143部分分别通过热熔的方式进入两个结合槽123内，并与两个结合槽123的内壁面固定连接，以此进一步提高卡扣部143在卡槽120内的固定效果。进一步地，在一些实施例中，结合槽123由三个内壁面围设形成。而加热前，在卡扣部143预留足够用于加热融化流入结合槽123的部分，以使加热后卡扣部143的部分能够填充满整个结合槽123。如此，加热完成后，卡扣部143与结合槽123的三个内壁面均固定连接，以此提高卡扣部143与侧壁113的连接面积，进一步提高卡扣部143在卡槽120内的固定效果。
可以理解的是，镜头组装完成后一般需要经过烘烤制程以释放镜头内部各零件的应力，常用的烘烤制程温度大致为80°左右，而常见的胶水在烘烤制程下会发生软化。由此，若压环与镜筒采用胶水粘连的方式连接，当镜头进入烘烤制程时，压环与镜筒之间的胶水会发生软化，使压环在镜头内的固定位置发生偏移，进而影响镜片组的固定位置。并且，若在镜头中不采用压环，而是通过胶水粘连的方式使镜片组直接与镜筒固定，当镜头进入烘烤制程时，镜片组与镜筒之间的胶水也会发生软化而影响镜片组的固定位置，进而影响镜头的成像质量。而参考图2所示，在本申请的一些实施例中，压环140的卡扣部143部分通过热熔的方式进入结合槽123内，并与结合槽123的内壁面固定连接。而在镜头100的烘烤制程中，烘烤制程温度不会使卡扣部143融化，即烘烤制程不会影响卡扣部143在卡槽120内的固定效果。由此，能够避免烘烤制程中因胶水软化而影响镜片组130的固定位置的情况，进而保证镜头100的成像质量。
请参见图9，在另一些实施例中，热熔头150还可不沿卡槽120的延伸方向进入卡槽120内，而是在垂直于光轴的方向上沿图9中的虚线箭头方向直接从末端122进入卡槽120内，并抵接卡扣部143靠近侧壁113的外侧面的表面。此时，当热熔头150对卡扣部143进行加热时，卡扣部143靠近侧壁113的外侧面的部分融化流入结合槽123内。
热熔头150能够从不同方向进入卡槽120内对卡扣部143进行加热，则可根据卡槽120的不同延伸方向选择不同的加工方式。例如，在一些实施例中，参考图5所示，卡槽120沿垂直于底端端面114的方向延伸，此时，卡扣部143从始端121进入卡槽120时在卡槽120的移动更方便，而热熔头150也能更容易地在光轴方向上沿图5中的虚线箭头方向进入卡槽120内并与卡扣部143相 抵接。另外，在另一些实施例中，卡槽120也可沿倾斜于底端端面114的方向延伸，进一步地，在一些实施例中，卡槽120内还可设置有拐角，即卡槽120可由两个以上的槽道共同构成。此时，热熔头150不容易沿卡槽120的延伸方向进入卡槽120内，则可在垂直于光轴的方向上沿图9的虚线箭头方向直接从末端122进入卡槽120内并与卡扣部143相抵接。
请再参见图3，在一些实施例中，卡槽120贯穿侧壁113设置，如此，在对侧壁113进行加工时，仅需在侧壁113的外侧进行开槽工艺形成卡槽120即可，加工工艺较为方便。而在另一些实施例中，卡槽120也可不贯穿侧壁113，而是形成于侧壁113朝向容纳腔115的侧面上。如此，当卡扣部143位于卡槽120内时，卡扣部143被侧壁113所包裹，卡扣部143以及本体部141不会在卡槽120处与镜头100的外部相接触，侧壁113能够对卡扣部143及本体部141起到更大程度的保护作用。可以理解的是，此时采用热熔头150对卡扣部143进行加热时，热熔头150从卡槽120的始端121沿卡槽120的延伸方向进入卡槽120内。
进一步地，卡槽120的设置数量不限，在一些实施例中，卡槽120可设置有多个，例如两个、三个或四个，多个卡槽120沿侧壁113的周向间隔设置。此时，卡扣部143也应当相应设置为多个，当本体部141进入容纳腔115内时，一个卡扣部143设置于对应的一个卡槽120内。通过设置多个卡槽120，使得当压环140与镜筒110固定时，压环140的多个部位均能受到侧壁113的限位作用，以提高压环140与镜筒110的固定效果，进而使压环140将镜片组130更好地固定于镜筒110内。进一步地，在一些实施例中，多个卡槽120沿侧壁113的周向均匀分布，例如，参考图10所示，在一些实施例中，卡槽120设置有四个，且四个卡槽120沿侧壁113的周向均匀分布。如此，当压环140与镜筒110 相固定时，压环140受力更均匀，使压环140的固定更稳定，不易因部分受力不均而产生晃动的情况。
请参见图12，在一些实施例中，本体部141背离侧壁113的表面为本体部141的内侧面142，而本体部141朝向侧壁113的表面为本体部141的外侧面，镜片组130具有光轴。并且，在镜片组130沿光轴指向底端端面114的方向上，本体部141的内侧面142逐渐张开，即可理解为沿图12中的虚线箭头方向上，本体部141的内侧面142的直径，即本体部141的内径逐渐增大。由此，当光线从顶壁111的入光孔112经镜片组130到达镜头100的内部时，由于本体部141的内侧面142朝向侧壁113倾斜，光线不容易到达内侧面142并在内侧面142上发生反射，以此减少杂光的产生，避免本体部141对镜头100的成像质量造成影响。
另外，常见的采用胶水粘连的方式连接的压环与镜筒，需要在压环与镜筒之间预留部分空间以供胶水填充，导致压环与镜筒连接处的防水效果较差，液体容易通过压环与镜筒的连接处进入镜头内部，对镜头的性能造成影响。而本申请的镜头100，由于不需要在本体部141与镜筒110之间点胶，则在一些实施例中，可使本体部141的外侧面与侧壁113的内侧面相抵接。如此设置，液体不易从卡槽120处或从入光孔112经镜片组130后于本体部141与侧壁113的连接处进入镜头100内部，提高镜头100的防水性能。
进一步地，参考图5和图8所示，在一些实施例中，卡槽120的一侧壁面的延伸面与底端端面114所成的角度A的数值范围可在10°-90°之间，即可理解为卡槽120可沿垂直于底端端面114或倾斜于底端端面114的方向延伸。当然，在一些实施例中，卡槽120内相对的两侧壁面互相平行。而在另一些实施例中，卡槽120内相对的两侧壁面互相倾斜。更具体地，在一些实施例中，在 末端端面124沿卡槽120的延伸方向指向底端端面114的方向上，卡槽120内相对的两侧壁面逐渐张开，以方便卡扣部143进入卡槽120内，并方便热熔头150从卡槽120的始端121进入卡槽120内对卡扣部143进行加热。参考图11所示，在一些实施例中，卡槽120的宽度B的数值范围可在0.3-3mm之间。由此，在保证卡扣部143在卡槽120内的固定效果的同时，使卡槽120的空间较小，以减小镜头100内部于卡槽120处与镜头100外部的接触面积，以使侧壁113能够更好地保护镜头100内部的压环140及镜片组130。参考图12所示，在一些实施例中，卡扣部143的长度C的数值范围可在0.2mm-1mm之间，并且，在一些实施例中，卡扣部143的长度小于或等于侧壁113的厚度，如此，当卡扣部143固定于卡槽120内时，卡扣部143不会于侧壁113的外侧凸出侧壁113，以避免卡扣部143在侧壁113的外侧受到撞击而损坏。结合槽123的宽度D的数值范围可在大于0且小于或等于1mm之间，保证当卡扣部143部分融化时能够流入结合槽123内。而在一些实施例中，结合槽123中与末端端面124朝向相反的一内壁面至末端端面124于光轴方向上的距离E大于结合槽123的宽度D，即此时结合槽123形成于卡槽的侧壁面上与末端端面124相间隔的部分。另外，在对卡扣部143进行加热前，卡扣部143的高度F应当大于末端端面124至结合槽123中与末端端面124朝向相反的内壁面于光轴上的距离E，以保证卡扣部143靠近底端端面114的部分预留有供加热融化进入结合槽123内的部分。
请参见图2和图13，在一些实施例中，镜头100可与感光元件210组装形成取像模组200。感光元件210设置于侧壁113背离顶壁111的一侧，且感光元件210朝向镜头100的表面为感光元件210的感光面211。光线从入光孔112经镜片组130进入取像模组200后，能够于感光面211成像。在取像模组200中采用上述镜头100，不需要通过对压环140及镜筒110进行胶水粘连即可将镜片 组130固定于镜筒110内，有效避免了胶水杂光的产生，同时避免了烘烤制程中胶水软化导致镜片组130于镜筒110内的固定位置发生改变的问题，进而提高取像模组200的成像质量。
一并参考图14所示，在一些实施例中，上述取像模组200可运用于电子设备300中，电子设备300还包括壳体310，取像模组200安装于壳体310上，且镜头100的入光孔112露出于所述壳体，以便光线能从入光孔112经镜片组130进入电子设备300中。具体地，电子设备300可以为监控摄像头或摄像机等具有取像功能的设备。在电子设备300中采用上述取像模组200，不需要通过对压环140及镜筒110进行胶水粘连即可将镜片组130固定于镜筒110内，有效避免了胶水杂光的产生，同时避免了烘烤制程中胶水软化导致镜片组130在镜筒110内的固定位置发生改变的问题，进而提高电子设备300的成像质量。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接， 或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的 普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种镜头，包括：
    镜筒，包括顶壁和侧壁，所述顶壁和所述侧壁围设形成容纳腔，所述侧壁远离所述顶壁的端面为所述侧壁的底端端面，所述侧壁上开设有卡槽，所述卡槽的其中一端延伸贯穿所述底端端面，所述卡槽具有两个相对的侧壁面，所述卡槽内两个相对的侧壁面中至少有一个侧壁面上开设有结合槽，且所述结合槽开设于所述侧壁面上靠近所述卡槽槽底的位置；
    镜片组，包括第一镜片及末位镜片，所述镜片组位于所述容纳腔内，且所述末位镜片与所述顶壁相抵接；以及
    压环，包括本体部和卡扣部，所述本体部位于所述容纳腔内，且位于所述第一镜片背离所述顶壁的一侧并抵接所述第一镜片，所述卡扣部位于所述卡槽的末端，且所述卡扣部的部分通过热熔的方式进入所述结合槽内，并与所述结合槽的至少一内壁面固定连接。
  2. 根据权利要求1所述的镜头，其特征在于，所述末端具有一末端端面，所述卡扣部抵接所述末端端面以及所述卡槽相对的两侧壁面。
  3. 根据权利要求2所述的镜头，其特征在于，所述结合槽形成于所述卡槽相对的两侧壁面上与所述末端端面相间隔的部分，且所述结合槽中与所述末端端面朝向相反的一内壁面平齐于所述卡扣部背离所述末端端面的表面。
  4. 根据权利要求1所述的镜头，其特征在于，所述侧壁背离所述容纳腔的表面为所述侧壁的外侧面，所述卡槽贯穿所述侧壁，所述卡扣部靠近所述侧壁的外侧面的部分通过热熔的方式延伸至所述结合槽内。
  5. 根据权利要求1所述的镜头，其特征在于，所述卡槽贯穿所述侧壁；或
    所述侧壁朝向所述容纳腔的表面为所述侧壁的内侧面，所述卡槽形成于所 述侧壁的内侧面上。
  6. 根据权利要求1所述的镜头，其特征在于，所述卡槽沿垂直于所述底端端面的方向延伸。
  7. 根据权利要求1所述的镜头，其特征在于，所述卡槽设置有多个，多个所述卡槽沿所述侧壁的周向间隔设置，所述卡扣部设置有多个，一个所述卡扣部设置于对应的一个所述卡槽内。
  8. 根据权利要求7所述的镜头，其特征在于，多个所述卡槽沿所述侧壁的周向均匀分布。
  9. 根据权利要求1任一项所述的镜头，其特征在于，所述卡槽沿倾斜于所述底端端面的方向延伸。
  10. 根据权利要求1任一项所述的镜头，其特征在于，所述卡槽内相对的两侧壁面中的其中一个侧壁面上开设有结合槽；或
    所述卡槽内相对的两侧壁面上均开设有结合槽。
  11. 根据权利要求1任一项所述的镜头，其特征在于，所述卡槽包括多个延伸方向不同的槽道。
  12. 根据权利要求1-11任一项所述的镜头，其特征在于，所述本体部背离所述侧壁的表面为所述本体部的内侧面，所述镜片组具有光轴，在所述镜片组沿所述光轴指向所述底端端面的方向上，所述内侧面的直径逐渐增大。
  13. 根据权利要求1-11任一项所述的镜头，其特征在于，所述本体部与所述侧壁相对的表面为所述本体部的外侧面，所述外侧面与所述侧壁相抵接。
  14. 根据权利要求1-11任一项所述的镜头，其特征在于，所述结合槽由三个内壁面围设形成，所述卡扣部与所述结合槽的三个内壁面均固定连接。
  15. 根据权利要求1-11任一项所述的镜头，其特征在于，所述顶壁的中间 部位开设有入光孔，所述镜片组于所述入光孔处露出所述镜头。
  16. 根据权利要求1-11任一项所述的镜头，其特征在于，所述卡扣部采用热塑性材料制成。
  17. 根据权利要求1-11任一项所述的镜头，其特征在于，所述镜片组包括多片镜片，所述透镜组中最靠近所述顶壁的镜片为所述镜片组的末位镜片，所述镜片组中最靠近底端端面的镜片为所述镜片组的第一镜片。
  18. 一种取像模组，包括感光元件以及权利要求1-17任一项所述的镜头，所述感光元件具有感光面，光线经所述镜头后于所述感光元件的感光面成像。
  19. 一种电子设备，包括壳体以及权利要求18所述的取像模组，所述取像模组安装于所述壳体上。
  20. 一种镜头的组装方法，用于组装权利要求1-17任一项所述的镜头，所述镜头的组装方法包括：
    将所述镜片组放入所述容纳腔内，使所述末位镜片与所述顶壁相抵接；
    将所述本体部进入所述容纳腔内，并带动所述卡扣部进入所述卡槽内，直至所述卡扣部与所述结合槽相对；
    加热所述卡扣部，使所述卡扣部的部分熔化进入所述结合槽内并与所述结合槽内的至少一内壁面接触。
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