Lens and assembling method thereof, image capturing module and electronic device

Abstract

The present application relates to a kind of lens and its assembly method and image pickup module, electronic equipment.Lens includes lens barrel, lens and compression ring.Lens barrel includes top wall and side wall, top wall and side wall are enclosed to form containing cavity, the end face of side wall away from top wall is the bottom end end face of side wall, clamping groove is opened in side wall, at least one side wall surface in two opposite side wall surface in clamping groove is opened with combination slot, and combination slot is opened in the position on side wall surface close to clamping groove groove bottom.Lens group is located in containing cavity and is in abutment with top wall.Compression ring includes body part and buckle part, body part is located in containing cavity, and is located in the side of lens group away from top wall and is in abutment with lens group, buckle part is located in the end of clamping groove, and buckle part part extends into combination slot, and is fixedly connected with at least one inner wall surface of combination slot.Above-mentioned lens, lens group can be fixed in lens barrel without glue bonding to compression ring and lens barrel, effectively avoid the influence of glue on lens imaging quality.

Description

Technical Field

[0001] This invention relates to the field of lens assembly technology, and in particular to a lens, its assembly method, image acquisition module, and electronic equipment. Background Technology

[0002] Lenses are crucial components in various electronic devices with video and photographic functions. A typical lens consists of a lens barrel and a lens group within it. Light passes through the lens group and forms an image on the surface of the image sensor. Currently, most lenses use a retaining ring to press against the first lens element closest to the image side, securing the lens group within the lens barrel. The retaining ring and lens barrel are then glued together. However, in this current method, some light entering the lens is reflected off the glue surface, producing stray glue light that affects image quality. Furthermore, during the lens baking process, the glue softens, affecting the fixed position of the lens group within the lens barrel, thus impacting image quality. Summary of the Invention

[0003] Therefore, it is necessary to provide a lens, its assembly method, image acquisition module, and electronic equipment to address the issues of glue stray light and the impact of glue softening during the baking process on lens imaging quality.

[0004] A lens, comprising:

[0005] The lens barrel includes a top wall and a side wall, which together form a receiving cavity. The end face of the side wall away from the top wall is the bottom end face of the side wall. A slot is formed on the side wall, one end of which extends through the bottom end face. The slot has two opposing side wall surfaces. At least one of the two opposing side wall surfaces in the slot has a connecting groove, which is located on the side wall surface near the bottom of the slot.

[0006] A lens assembly, including a first lens and a last lens, is located within the receiving cavity, and the first lens abuts against the top wall; and

[0007] The pressure ring includes a body and a snap-fit ​​part. The body is located in the receiving cavity and is located on the side of the first lens away from the top wall and abuts against the first lens. The snap-fit ​​part is located at the end of the slot, and a portion of the snap-fit ​​part enters the bonding groove by heat fusion and is fixedly connected to at least one inner wall surface of the bonding groove.

[0008] The aforementioned lens, by providing a latching part on the retaining ring, which is heat-fused into the mounting groove and fixedly connected to at least one inner wall surface of the mounting groove, secures the retaining ring to the lens barrel. The retaining ring abuts against the first lens element, confining the lens assembly within the lens barrel. Therefore, the lens assembly can be fixed within the lens barrel without the need for adhesive bonding between the retaining ring and the lens barrel, effectively avoiding glue stray light and preventing the problem of glue softening during the baking process, which could alter the fixed position of the lens assembly within the lens barrel, thereby improving the lens's image quality.

[0009] In one embodiment, the end has an end face, and the latching part abuts against the end face and the opposite side walls of the slot. The latching part is fixed in the slot and abuts against the end face of the slot and the opposite side walls of the slot. The latching part has a better fixing effect in the slot, thereby ensuring the lens is fixed in the lens barrel.

[0010] In one embodiment, the engaging groove is formed on the two side walls of the slot, spaced apart from the end face, and an inner wall surface of the engaging groove facing opposite to the end face is flush with the surface of the latching portion away from the end face. The diverse placement of the engaging groove allows for more design options for the latch.

[0011] In one embodiment, the surface of the sidewall facing away from the receiving cavity is the outer surface of the sidewall, the slot penetrates the sidewall, and the portion of the latching part near the outer surface of the sidewall extends into the mating groove by heat fusion. The latching part can extend into the mating groove and be fixedly connected to the inner wall surface of the mating groove in different ways by heat fusion, giving more options for the fixing process of the latching part.

[0012] In one embodiment, the slot extends through the sidewall; or

[0013] The surface of the sidewall facing the receiving cavity is the inner surface of the sidewall, and the slot is formed on the inner surface of the sidewall. When the slot is formed on the inner surface of the sidewall, the sidewall can largely isolate the latching part and the main body from contact with the outside, providing better protection for the latching part and the main body. When the slot penetrates the sidewall, the slot-making process is simpler. The diverse designs offer more options for slot creation.

[0014] In one embodiment, the slot extends in a direction perpendicular to the bottom end face. This arrangement allows the latching portion to move more easily to the end of the slot when the body portion enters the receiving cavity. Furthermore, the fact that the slot extends perpendicular to the bottom end face also facilitates the machining of the latching portion so that it partially extends into the engagement groove.

[0015] In one embodiment, multiple slots are provided, spaced circumferentially along the sidewall, and multiple latching parts are provided, with one latching part disposed within a corresponding slot. By providing multiple corresponding slots and multiple latching parts, multiple parts of the pressure ring are fixedly connected to the sidewall, enhancing the fixing effect of the pressure ring.

[0016] In one embodiment, the plurality of slots are evenly distributed circumferentially along the sidewall. This even distribution of slots ensures more uniform force distribution on the pressure ring, resulting in better fixation.

[0017] In one embodiment, the surface of the body portion facing away from the sidewall is the inner surface of the body portion, and the lens group has an optical axis. The diameter of the inner surface gradually increases in the direction along the optical axis pointing towards the bottom end face of the lens group. This configuration reduces the amount of light reaching the inner surface of the body portion when light enters the lens through the lens group, thus preventing stray light from being reflected off the inner surface of the body portion and affecting the image quality of the lens.

[0018] In one embodiment, the surface of the body portion opposite to the sidewall is the outer surface of the body portion, and the outer surface abuts against the sidewall. This arrangement prevents liquid from easily passing between the pressure ring and the sidewall, improving the lens's waterproof performance.

[0019] An image-capturing module includes a photosensitive element and a lens as described in any of the above embodiments. The photosensitive element has a photosensitive surface, and light passing through the lens forms an image on the photosensitive surface of the photosensitive element. Using the lens described above in the image-capturing module eliminates the need for adhesive bonding of the retaining ring and lens barrel to fix the lens assembly within the lens barrel, effectively avoiding the generation of adhesive stray light. It also avoids the problem of the lens assembly changing its fixed position within the lens barrel due to adhesive softening during the baking process, thereby improving the image quality of the image-capturing module.

[0020] An electronic device includes a housing and the aforementioned image-capturing module, wherein the image-capturing module is mounted on the housing. By using the aforementioned image-capturing module in the electronic device, the lens assembly can be fixed inside the lens barrel without adhesive bonding of the pressure ring and lens barrel, effectively avoiding the generation of adhesive stray light. It also avoids the problem of the lens assembly changing its fixed position inside the lens barrel due to adhesive softening during the baking process, thereby improving the imaging quality of the electronic device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the lens structure in one embodiment of this application;

[0022] Figure 2 for Figure 1 The diagram shows the structure of the lens from another angle.

[0023] Figure 3 for Figure 2 Exploded view of some components of the lens;

[0024] Figure 4 This is a schematic diagram of the latching part of the lens entering the slot according to an embodiment of this application;

[0025] Figure 5 for Figure 4 The diagram shown illustrates the fusion head entering the slot in the lens.

[0026] Figure 6 for Figure 4 The diagram shown illustrates the contact point between the heat-sealing head and the latch in the lens.

[0027] Figure 7 for Figure 4 The diagram shows the lens where the latching part melts into the coupling groove;

[0028] Figure 8 for Figure 4 The diagram shown illustrates the fixed connection between the latch and the slot in the lens.

[0029] Figure 9 This is a schematic diagram of the hot-melt head entering the slot in a lens according to another embodiment of this application;

[0030] Figure 10 This is an exploded view of some components of a lens according to another embodiment of this application;

[0031] Figure 11 for Figure 1 A schematic diagram showing another angle of the lens;

[0032] Figure 12 for Figure 11 A cross-sectional schematic diagram of the lens shown;

[0033] Figure 13 This is a schematic diagram of an image-capturing module according to an embodiment of this application;

[0034] Figure 14 This is a schematic diagram of an electronic device according to an embodiment of this application.

[0035] Among them, 100 is the lens; 110 is the lens barrel; 111 is the top wall; 112 is the light entrance hole; 113 is the side wall; 114 is the bottom end face; 115 is the receiving cavity; 120 is the slot; 121 is the beginning end; 122 is the end end; 123 is the connecting groove; 124 is the end face; 130 is the lens group; 140 is the pressure ring; 141 is the body; 142 is the inner side; 143 is the snap-fit ​​part; 150 is the hot-melt head; 200 is the image acquisition module; 210 is the photosensitive element; 211 is the photosensitive surface; 300 is the electronic device; and 310 is the housing. Detailed Implementation

[0036] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Please see Figure 1 , Figure 2 and Figure 3 A lens 100 includes a lens barrel 110, a lens group 130, and a retaining ring 140. The lens barrel 110 includes a top wall 111 and a side wall 113, which together form a receiving cavity 115. The end face of the side wall 113 away from the top wall 111 is the bottom end face 114 of the side wall 113. A slot 120 is formed on the side wall 113, with a starting end 121 and an ending end 122 at its two ends, the starting end 121 extending through the bottom end face 114. A mating groove 123 is formed on each of the two opposite side wall surfaces within the slot 120, located near the bottom of the slot 120, and the two mating grooves 123 are positioned opposite each other. Lens assembly 130 includes a first lens and a last lens. Lens assembly 130 is located within receiving cavity 115, and the last lens of lens assembly 130 abuts against top wall 111. Pressure ring 140 includes a body portion 141 and a locking portion 143. The body portion 141 is located within receiving cavity 115 and is positioned on the side of lens assembly 130 opposite to top wall 111, abutting against the first lens of lens assembly 130. The locking portion 143 is located at the end 122 of locking groove 120, and a portion of the locking portion 143 is inserted into coupling groove 123 by heat fusion and is fixedly connected to at least one inner wall surface of coupling groove 123.

[0039] The lens 100 described above is fixed to the lens barrel 110 by providing a latching part 143 on the retaining ring 140. The latching part 143 is located in the latching 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. The retaining ring 140 is then fixed to the lens barrel 110. The body part 141 abuts against the first lens of the lens group 130, fixing the lens group 130 between the body part 141 and the top wall 111. In this way, the lens group 130 can be fixed in the lens barrel 110 without the need for glue bonding between the retaining ring 140 and the lens barrel 110. This avoids the influence of glue stray light on the image quality of the lens 100 when glue bonding is used. At the same time, it also avoids the impact on the image quality of the lens 100 caused by the softening of glue during the baking process, which may change the fixed position of the lens group 130 in the lens barrel 110.

[0040] It is understood that multiple lenses can be provided in the lens group 130, and when the lens group 130 is located in the receiving cavity 115, the lens closest to the top wall 111 in the lens group 130 is the last lens of the lens group 130, the lens closest to the bottom end face 114 in the lens 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 last lens.

[0041] Furthermore, in some embodiments, a light entrance hole 112 is provided in the middle of the top wall 111, and the lens assembly 130 protrudes from the lens 100 at the light entrance hole 112, so that light can enter the lens 100 from the light entrance hole 112 of the top wall 111 through the lens assembly 130. In other embodiments, refer to... Figure 1 As shown, the middle portion of the top wall 111 extends outward to form a protrusion, and the light entrance hole 112 is formed on this protrusion. Furthermore, in some embodiments, a protective cover with good light transmittance can also be provided at the light entrance hole 112 to protect the lens group 130 inside the lens 100. It should be noted that in some embodiments, the lens group 130 can be any combination of multiple convex lenses or concave lenses, with a fixed spacing between the multiple convex lenses or concave lenses, collectively forming the lens group 130 of the lens 100.

[0042] Furthermore, in some embodiments, when the latching part 143 is placed at the end 122 of the slot 120, the latching part 143 is partially melted by heat fusion and enters the mating groove 123. After the melted part of the latching part 143 cools, it will be fixedly connected to at least one inner wall surface of the mating groove 123. Specifically, in a method for assembling a lens 100, the lens 100 is assembled, referring to... Figure 3 As shown, first, the lens assembly 130 is placed into the receiving cavity 115, so that the last lens of the lens assembly 130 contacts the top wall 111. Then, the latching part 143 is aligned with the beginning end 121 of the slot 120, and the body part 141 is aligned along the optical axis of the lens assembly 130. Figure 3 The dotted arrow points in the direction of insertion into the receiving cavity 115. (See also...) Figure 4 As shown, when the body portion 141 is along the optical axis direction... Figure 4 When the dotted arrow in the image enters the receiving cavity 115, it will drive the latching part 143 from the starting end 121 into the slot 120. When the latching part 143 moves along the optical axis... Figure 4 When the dashed arrow in the diagram moves to the end 122 of the card slot 120, refer to the following: Figure 5 and Figure 6 As shown, the hot melt head 150 of the hot melt equipment is along... Figure 5 The dotted arrow in the middle extends into the slot 120 until it abuts against the latching part 143. (Reference) Figure 7 As shown, the hot melt head 150 heats the latching portion 143, causing part of the latching portion 143 to melt and flow into the mating groove 123, and then the hot melt head 150 is removed. (Reference) Figure 8 As shown, after the portion of the snap-fit ​​part 143 that melts and flows into the connecting groove 123 cools and solidifies, it will be fixedly connected to the inner wall of the connecting groove 123 to fix the pressure ring 140 and the lens barrel 110. At this time, the portion of the snap-fit ​​part 143 that is fixedly connected to the inner wall of the connecting groove 123 is the portion of the snap-fit ​​part 143 that has been solidified by heat melting. It can be understood that when the portion of the snap-fit ​​part 143 enters the connecting groove 123 by heat melting, the snap-fit ​​part 143 needs to be made of thermoplastic material so that the snap-fit ​​part 143 can melt into the connecting groove 123 under the heating action of the heat melting head 150, and solidify after cooling to be fixedly connected to the inner wall of the connecting groove 123.

[0043] Further, refer to Figure 5 As shown, the end 122 of the slot 120 has an end face 124, which together with the opposing side walls of the slot 120 form the slot 120. In some embodiments, when the latching part 143 reaches the end 122 of the slot 120, the latching part 143 abuts against the end face 124 and the opposing side walls of the slot 120. Thus, when the latching part 143 is partially heat-fused and fixed in the connecting groove 123, the end face 124 and the opposing side walls of the slot 120 can both limit the position of the slot 120, making it difficult for the latching part 143 to wobble within the slot 120. Furthermore, it can be understood that... Figure 6 In the illustrated embodiment, when the heat-sealing head 150 abuts against the surface of the latching portion 143 away from the end face 124, it heats the latching portion 143. Before heating, the portion of the latching portion 143 near the bottom end face 114 should have a portion reserved for heating and melting. Also, refer to... Figure 7As shown, in some embodiments, the connecting groove 123 is formed on the opposite side walls of the slot 120, spaced apart from the end face 114. The hot melt head 150 heats the entire latching portion 143 until the surface of the hot melt head 150 abutting the latching portion 143 is flush with an inner wall surface in the connecting groove 123 facing the opposite direction to the end face 124. Heating of the latching portion 143 is then stopped, thereby controlling the heating time of the hot melt head 150 on the latching portion 143. At this time, after the latching portion 143 partially melts and solidifies, the surface of the latching portion 143 facing away from the end face 124 is flush with an inner wall surface in the connecting groove 123 facing the opposite direction to the end face 124. Therefore, less material is used in the latching portion 143, saving production costs. Of course, the heating time of the latching portion 143 can be set in other ways, and the position of the latching portion 143 facing away from the end face 124 after heating can also be set in other ways. For example, in other embodiments, after the latching portion 143 partially melts, cools, and solidifies, the surface of the latching portion 143 facing away from the end face 124 is further away from the end face 124 relative to the mating groove 123.

[0044] In some embodiments, only one of the opposite side walls of the slot 120 may form a connecting groove 123, while in other embodiments, both opposite side walls of the end 122 may form connecting grooves 123, with the two connecting grooves 123 positioned opposite each other. By providing two connecting grooves 123, the latching part 143 enters the two connecting grooves 123 respectively by heat fusion and is fixedly connected to the inner wall of the two connecting grooves 123, thereby further improving the fixing effect of the latching part 143 in the slot 120. Furthermore, in some embodiments, the connecting groove 123 is formed by three inner wall surfaces. Before heating, a portion sufficient for heating and melting to flow into the connecting groove 123 is reserved in the latching part 143, so that after heating, the portion of the latching part 143 can fill the entire connecting groove 123. Thus, after heating is completed, the three inner wall surfaces of the snap fastener 143 and the connecting groove 123 are fixedly connected, thereby increasing the connection area between the snap fastener 143 and the side wall 113 and further improving the fixing effect of the snap fastener 143 in the groove 120.

[0045] Understandably, after lens assembly, a baking process is generally required to release stress on the internal components. The commonly used baking temperature is around 80°C, and common adhesives soften during this process. Therefore, if the lens ring and lens barrel are glued together, the adhesive softens during the baking process, causing the ring to shift in its fixed position within the lens, thus affecting the lens element's position. Furthermore, if the lens element is directly glued to the lens barrel instead of using a lens ring, the adhesive will also soften during the baking process, affecting the lens element's position and ultimately impacting image quality. (See reference...) Figure 2 As shown, in some embodiments of this application, the latching portion 143 of the retaining ring 140 is inserted into the mating groove 123 by heat fusion and is fixedly connected to the inner wall of the mating groove 123. During the baking process of the lens 100, the baking temperature will not melt the latching portion 143, meaning the baking process will not affect the fixing effect of the latching portion 143 within the slot 120. Therefore, the situation where the glue softens during the baking process, affecting the fixing position of the lens group 130, can be avoided, thereby ensuring the imaging quality of the lens 100.

[0046] Please see Figure 9 In other embodiments, the hot melt head 150 may not enter the slot 120 along the extending direction of the slot 120, but rather along a direction perpendicular to the optical axis. Figure 9 The dotted arrow in the diagram points directly into the slot 120 from the end 122 and abuts against the outer surface of the latching part 143 near the side wall 113. At this time, when the hot melt head 150 heats the latching part 143, the portion of the latching part 143 near the outer surface of the side wall 113 melts and flows into the mating groove 123.

[0047] The hot melt head 150 can enter the slot 120 from different directions to heat the latching part 143, thus allowing different processing methods to be selected according to the different extension directions of the slot 120. For example, in some embodiments, refer to Figure 5 As shown, the slot 120 extends in a direction perpendicular to the bottom end face 114. In this case, the latching part 143 moves more easily within the slot 120 when it enters from the beginning end 121, and the hot melt head 150 can also move more easily along the optical axis. Figure 5The dotted arrow in the image points into the slot 120 and abuts against the latching part 143. In other embodiments, the slot 120 may extend in a direction inclined to the bottom end face 114. Furthermore, in some embodiments, the slot 120 may have a corner, meaning the slot 120 may be formed by two or more channels. In this case, the hot melt head 150 may not easily enter the slot 120 along its extension direction, but can instead move along a direction perpendicular to the optical axis. Figure 9 The dotted arrow points directly into the slot 120 from the end 122 and abuts against the buckle 143.

[0048] Please see again. Figure 3 In some embodiments, the slot 120 extends through the sidewall 113. Therefore, when processing the sidewall 113, only a grooving process is needed on the outer side of the sidewall 113 to form the slot 120, making the processing relatively convenient. In other embodiments, the slot 120 may not extend through the sidewall 113, but may be formed on the side of the sidewall 113 facing the receiving cavity 115. In this way, when the latching part 143 is located within the slot 120, the latching part 143 is enclosed by the sidewall 113, and the latching part 143 and the body part 141 will not contact the outside of the lens 100 at the slot 120. The sidewall 113 can provide greater protection for the latching part 143 and the body part 141. It is understood that when the hot melt head 150 is used to heat the latching part 143, the hot melt head 150 enters the slot 120 from the beginning 121 along the extending direction of the slot 120.

[0049] Furthermore, the number of slots 120 is not limited. In some embodiments, multiple slots 120 may be provided, such as two, three, or four, with the multiple slots 120 spaced apart circumferentially along the side wall 113. In this case, multiple latching parts 143 should also be provided accordingly. When the main body 141 enters the receiving cavity 115, one latching part 143 is positioned within a corresponding slot 120. By providing multiple slots 120, when the retaining ring 140 is fixed to the lens barrel 110, multiple portions of the retaining ring 140 can be limited by the side wall 113, thereby improving the fixing effect between the retaining ring 140 and the lens barrel 110, and thus allowing the retaining ring 140 to better fix the lens group 130 within the lens barrel 110. Furthermore, in some embodiments, the multiple slots 120 are evenly distributed circumferentially along the side wall 113, for example, referring to… Figure 10 As shown, in some embodiments, four slots 120 are provided, and the four slots 120 are evenly distributed along the circumference of the side wall 113. In this way, when the pressure ring 140 is fixed to the lens barrel 110, the pressure ring 140 is subjected to more even force, making the fixation of the pressure ring 140 more stable and less prone to shaking due to uneven force distribution.

[0050] Please see Figure 12 In some embodiments, the surface of the body portion 141 facing away from the sidewall 113 is the inner surface 142 of the body portion 141, while the surface of the body portion 141 facing the sidewall 113 is the outer surface of the body portion 141, and the lens assembly 130 has an optical axis. Furthermore, in the direction of the lens assembly 130 along the optical axis towards the bottom end face 114, the inner surface 142 of the body portion 141 gradually opens, which can be understood as... Figure 12 In the direction of the dotted arrow, the diameter of the inner side surface 142 of the body portion 141, i.e., the inner diameter of the body portion 141, gradually increases. Therefore, when light enters the lens 100 from the light entrance hole 112 of the top wall 111 through the lens group 130, the light is less likely to reach the inner side surface 142 and be reflected on it because the inner side surface 142 of the body portion 141 is tilted towards the side wall 113. This reduces the generation of stray light and prevents the body portion 141 from affecting the imaging quality of the lens 100.

[0051] Furthermore, in common methods of connecting the retaining ring and lens barrel with adhesive, a space needs to be left between the retaining ring and lens barrel for adhesive filling. This results in poor waterproofing at the connection between the retaining ring and lens barrel, allowing liquid to easily enter the lens interior through this connection and affecting lens performance. However, the lens 100 of this application, since it does not require adhesive application between the body 141 and lens barrel 110, allows the outer surface of the body 141 to abut against the inner surface of the sidewall 113 in some embodiments. This arrangement prevents liquid from easily entering the lens 100 from the slot 120 or from the light entrance 112 through the lens group 130 and then at the connection between the body 141 and sidewall 113, thus improving the waterproofing performance of the lens 100.

[0052] Further, refer to Figure 5 and Figure 8 As shown, in some embodiments, the angle A formed by the extension surface of one side wall of the slot 120 and the bottom end face 114 can range from 10° to 90°, which means that the slot 120 can extend in a direction perpendicular to or inclined to the bottom end face 114. Of course, in some embodiments, the opposing side walls within the slot 120 are parallel to each other. In other embodiments, the opposing side walls within the slot 120 are inclined to each other. More specifically, in some embodiments, in the direction from the end face 124 along the extension direction of the slot 120 towards the bottom end face 114, the opposing side walls within the slot 120 gradually open to facilitate the entry of the latching part 143 into the slot 120 and to facilitate the entry of the heat-sealing head 150 from the beginning end 121 of the slot 120 to heat the latching part 143. (Reference) Figure 11As shown, in some embodiments, the width B of the slot 120 can range from 0.3 to 3 mm. This ensures the secure fastening of the latching part 143 within the slot 120 while minimizing the space of the slot 120, thereby reducing the contact area between the inside of the lens 100 and the outside of the lens 100 at the slot 120. This allows the sidewall 113 to better protect the pressure ring 140 and lens group 130 inside the lens 100. (Reference) Figure 12 As shown, in some embodiments, the length C of the latching portion 143 can range from 0.2mm to 1mm. Furthermore, in some embodiments, the length of the latching portion 143 is less than or equal to the thickness of the sidewall 113. Thus, when the latching portion 143 is fixed within the slot 120, it will not protrude beyond the sidewall 113, preventing damage from impacts on the sidewall 113. The width D of the connecting groove 123 can range from greater than 0 to less than or equal to 1mm, ensuring that when the latching portion 143 partially melts, it can flow into the connecting groove 123. In some embodiments, the distance E from the inner wall surface of the connecting groove 123 facing the opposite direction to the end face 124 along the optical axis is greater than the width D of the connecting groove 123. That is, in this case, the connecting groove 123 is formed on the sidewall surface of the slot, at a distance spaced from the end face 124. In addition, before heating the latching part 143, the height F of the latching part 143 should be greater than the distance E on the optical axis from the end face 124 to the inner wall surface of the mating groove 123 that faces opposite to the end face 124, so as to ensure that the part of the latching part 143 near the bottom end face 114 has a portion reserved for heating and melting into the mating groove 123.

[0053] Please see Figure 2 and Figure 13 In some embodiments, the lens 100 can be assembled with the photosensitive element 210 to form an image-capturing module 200. The photosensitive element 210 is disposed on the side of the side wall 113 facing 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. After light enters the image-capturing module 200 through the light entrance aperture 112 and the lens group 130, it can form an image on the photosensitive surface 211. By using the above-described lens 100 in the image-capturing module 200, it is not necessary to use glue to bond the pressure ring 140 and the lens barrel 110 to fix the lens group 130 inside the lens barrel 110, which effectively avoids the generation of glue stray light, and also avoids the problem of the lens group 130 changing its fixed position inside the lens barrel 110 due to the softening of glue during the baking process, thereby improving the imaging quality of the image-capturing module 200.

[0054] Please refer to the above. Figure 14As shown, in some embodiments, the image-capturing module 200 can be used in an electronic device 300. The electronic device 300 also includes a housing 310, on which the image-capturing module 200 is mounted, and the light entrance hole 112 of the lens 100 is exposed in the housing, so that light can enter the electronic device 300 through the lens group 130 from the light entrance hole 112. Specifically, the electronic device 300 can be a device with image-capturing function, such as a surveillance camera or a camcorder. By using the image-capturing module 200 in the electronic device 300, the lens group 130 can be fixed in the lens barrel 110 without adhesive bonding of the pressure ring 140 and the lens barrel 110, effectively avoiding the generation of glue stray light, and also avoiding the problem of the lens group 130 changing its fixed position in the lens barrel 110 due to the softening of the glue during the baking process, thereby improving the imaging quality of the electronic device 300.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A lens, characterized in that, include: The lens barrel includes a top wall and a side wall, which together form a receiving cavity. The end face of the side wall away from the top wall is the bottom end face of the side wall. A slot is formed on the side wall, one end of which extends through the bottom end face. The slot has two opposing side wall surfaces. At least one of the two opposing side wall surfaces in the slot has a connecting groove, which is located on the side wall surface near the bottom of the slot. A lens assembly, including a first lens and a last lens, is located within the receiving cavity, and the last lens abuts against the top wall; and The pressure ring includes a body and a snap-fit ​​part. The body is located in the receiving cavity and is located on the side of the first lens away from the top wall and abuts against the first lens. The snap-fit ​​part is located at the end of the slot, and a portion of the snap-fit ​​part enters the bonding groove by heat fusion and is fixedly connected to at least one inner wall surface of the bonding groove.

2. The lens according to claim 1, characterized in that, The end has an end face, and the latching part abuts against the end face and the two opposite side walls of the slot.

3. The lens according to claim 2, characterized in that, The connecting groove is formed on the two side walls of the slot that are spaced apart from the end face, and an inner wall surface of the connecting groove that faces the opposite direction to the end face is flush with the surface of the buckle portion that is away from the end face.

4. The lens according to claim 1, characterized in that, The surface of the sidewall facing away from the receiving cavity is the outer surface of the sidewall. The slot passes through the sidewall, and the portion of the buckle near the outer surface of the sidewall extends into the mating groove by heat fusion.

5. The lens according to claim 1, characterized in that, The slot extends through the side wall; or The surface of the sidewall facing the receiving cavity is the inner surface of the sidewall, and the slot is formed on the inner surface of the sidewall.

6. The lens according to claim 1, characterized in that, The slot extends in a direction perpendicular to the bottom end face.

7. The lens according to claim 1, characterized in that, The card slots are provided in multiple ways, and the multiple card slots are spaced apart circumferentially along the side wall. The buckle parts are provided in multiple ways, and one buckle part is provided in a corresponding card slot.

8. The lens according to claim 7, characterized in that, The plurality of slots are evenly distributed circumferentially along the sidewall.

9. The lens according to any one of claims 1-8, characterized in that, The surface of the main body that faces away from the sidewall is the inner surface of the main body. The lens group has an optical axis, and the diameter of the inner surface of the main body gradually increases in the direction along the optical axis pointing to the bottom end face of the lens group.

10. The lens according to any one of claims 1-8, characterized in that, The surface of the main body that is opposite to the sidewall is the outer surface of the main body, and the outer surface of the main body abuts against the sidewall.

11. An image acquisition module, characterized in that, It includes a photosensitive element and a lens as described in any one of claims 1-10, wherein the photosensitive element has a photosensitive surface, and light is imaged on the photosensitive surface of the photosensitive element after passing through the lens.

12. An electronic device, characterized in that, It includes a housing and the imaging module as described in claim 11, the imaging module being mounted on the housing.

13. A method for assembling a lens, used to assemble the lens according to any one of claims 1-10, characterized in that, The lens assembly method includes: The lens assembly is placed into the receiving cavity, so that the last lens abuts against the top wall; Place the main body into the receiving cavity and drive the latching part into the latching groove until the latching part is aligned with the engaging groove; The latching part is heated so that a portion of the latching part melts and enters the mating groove, making contact with at least one inner wall surface of the mating groove.

Images