Lens device

Abstract

The present application relates to a lens device, comprising: a lens group unit; a guide unit connected to the lens group unit for guiding the lens group unit to move in a first direction or a second direction; a transmission unit; and a driving unit connected to the transmission unit for outputting power to drive the lens group unit to move in the first direction via the transmission unit or to drive the lens group unit to move in the second direction via the transmission unit.

Description

Technical Field

[0001] This invention relates to a lens device, and more particularly to a lens device that is resistant to damage from external impacts and is waterproof. Background Technology

[0002] To achieve optical zoom while keeping smartphones thinner, multiple lenses are often used. However, multiple lenses affect the phone's appearance, and the zoom range remains limited. Therefore, smartphones have recently begun to develop retractable lenses to achieve a greater zoom range and improve their appearance. One of the problems that needs to be solved is how to achieve optical zoom using a simple structure. For retractable lenses, preventing external moisture (such as rainwater) from entering the lens is a significant challenge.

[0003] Furthermore, existing lens devices often suffer lens damage when dropped and impacted due to the lack of effective protection mechanisms. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a lens device that uses a simple structure to drive the movement of the lens group unit, in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: a lens device is constructed, comprising: a lens group unit; a guiding unit connected to the lens group unit for guiding the lens group unit to move along a first direction or a second direction; a transmission unit including a fixing member; and a driving unit connected to the transmission unit for outputting power to drive the lens group unit to move along the first direction via the transmission unit, or to drive the lens group unit to move along the second direction via the transmission unit; wherein the fixing member includes a body portion and a bending portion, the bending portion extending from the body portion for creating a space between the fixing member and the lens group unit.

[0006] The lens device as described in this invention further includes: a lens housing that accommodates the lens group unit, wherein the lens group unit extends out of the lens housing when moving along the first direction and retracts into the lens housing when moving along the second direction; and a buffer unit connected between the lens group unit and the transmission unit, wherein the drive unit drives the lens group unit to move along the first direction via the transmission unit and the buffer unit, wherein when the lens group unit is impacted by an external force, the external force is transmitted to the buffer unit via the lens group unit, and the space generated between the fixing member and the lens group unit accommodates the buffer unit; the transmission unit further includes a screw, the fixing member may be a nut or other fastening component, the fixing member is screwed onto the screw, and the drive unit outputs power to rotate the screw, thereby driving the fixing member to move along the first direction or the second direction.

[0007] The lens device as described in this invention further includes an auxiliary unit connected between the lens group unit and the lens housing, for cooperating with the buffer unit to move the lens group unit along the first direction, the first direction being opposite to the second direction; wherein the lens group unit has an optical axis, and the first direction and the second direction are parallel to the optical axis.

[0008] As described in the present invention, when the drive unit outputs power to the transmission unit, the lens group unit can be moved along the second direction by the body part contacting and pressing the lens group unit.

[0009] As described in the present invention, the lens assembly includes a contact portion, the fixing member is a nut, the body portion of the nut contacts and presses against the contact portion of the lens assembly to cause the lens assembly to move along the second direction, the body portion is provided with a threaded hole, the contact portion is provided with a through hole, and the screw passes through both the threaded hole and the through hole.

[0010] As described in the present invention, the lens assembly includes a contact portion. When the drive unit outputs power to the transmission unit, the lens assembly can be moved along the second direction by the body portion contacting and pressing the contact portion of the lens assembly. The contact portion is provided with an opening for the buffer unit to pass through.

[0011] As described in the lens device of the present invention, the fixing member is a nut member, the body of the nut member is provided with a threaded hole, the contact part is further provided with a through hole, and the screw passes through both the threaded hole and the through hole.

[0012] As described in the lens device of the present invention, the nut further includes a first connecting portion, the lens group unit includes a second connecting portion, the first connecting portion extends in a third direction, the second connecting portion extends in a fourth or fifth direction, the third direction is perpendicular to the fourth direction, and the third direction is opposite to the fifth direction, the buffer unit includes a spring, one end of the spring is connected to the first connecting portion, and the other end of the spring is connected to the second connecting portion.

[0013] The lens device as described in this invention further includes: a lens housing having an opening; and a flexible component;

[0014] The lens group unit is movably disposed within the lens housing. When moving, it can protrude from or retract into the lens housing through the opening. The lens group unit includes a lens barrel, and a gap is formed between the outer peripheral wall of the lens barrel and the inner side of the opening.

[0015] The flexible component is disposed between the lens housing and the lens barrel;

[0016] The lens housing includes a cover and a main body. The cover and the main body are connected to form a receiving space to accommodate the lens group unit. The opening is provided on the cover. The drive unit is integrally formed with the main body or the cover is integrally formed with the flexible component.

[0017] The flexible component is made of silicone, rubber, glue, or soft plastic. The flexible component includes a body, a first flange extending from the body toward the lens barrel, and a second flange extending from the body away from the lens barrel. The first flange abuts against the lens barrel, and the second flange contacts the lens housing.

[0018] As described in the present invention, the first flange extends toward the lens barrel in an inclined or perpendicular manner relative to the lens barrel surface. There are multiple first flanges extending from the body toward the lens barrel. These first flanges abut against the lens barrel. The first flanges extend toward the lens barrel in different directions. The flexible member is held by the lens housing and the lens barrel.

[0019] As described in the lens device of the present invention, the flexible component and the first flanges are all annular and surround the lens barrel, and the cross-section of the first flanges is herringbone or figure-eight shaped.

[0020] The lens device of the present invention has the following advantages: it uses a simple structure to drive the movement of the lens group unit, and can provide an effective protection mechanism when the lens device is dropped to the ground. Furthermore, it can prevent external moisture from entering the lens. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the lens device according to the first embodiment of the present invention.

[0022] Figure 2 yes Figure 1 An exploded view of the lens assembly.

[0023] Figure 3 yes Figure 1 A front view of the lens barrel at its lowest point.

[0024] Figure 4 yes Figure 1 A front view of the lens barrel at its highest point.

[0025] Figure 5 yes Figure 1 A front view of the lens barrel of the lens assembly when it is subjected to an external impact.

[0026] Figure 6 This is a schematic diagram of the lens device according to a second embodiment of the present invention.

[0027] Figure 7 yes Figure 6 An exploded view of the lens assembly.

[0028] Figure 8 yes Figure 6 A front view of the lens barrel at its lowest point.

[0029] Figure 9 yes Figure 6 A front view of the lens barrel at its highest point.

[0030] Figure 10 yes Figure 6 A front view of the lens barrel of the lens assembly when it is subjected to an external impact.

[0031] Figure 11 This is a schematic diagram of the lens device according to a third embodiment of the present invention.

[0032] Figure 12 yes Figure 11 An exploded view of the lens assembly.

[0033] Figure 13 yes Figure 12 Enlarged cross-sectional view of the dashed section III of the lens assembly. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] Please see Figure 1 , 2 , Figure 1 This is a schematic diagram of the lens device 10 according to the first embodiment of the present invention; Figure 2 yes Figure 1 An exploded view of the lens assembly 10 is shown. As illustrated, the lens assembly 10 of the present invention includes a lens housing (not shown) for housing a lens group unit 110, a drive unit 120, a transmission unit 130, a buffer unit 140, and a guide unit 150. Details of each component are described below:

[0036] The lens group unit 110 includes at least one lens group (not shown) disposed within the lens barrel 111. A bushing portion 114 is provided on the side circumferential surface of the lens barrel 111. The bushing portion 114 extends along a first direction X or a second direction X' and has a shaft hole 116. A contact portion 112 is connected to the bushing portion 114. The contact portion 112 is plate-shaped and has a through hole 117. A second connecting portion 113 extends from the contact portion 112 toward a fourth direction Z. The second connecting portion 113 is protruding. The second direction X' is opposite to the first direction X, and the fourth direction Z is perpendicular to both the first direction X and the second direction X'.

[0037] The guiding unit 150 includes a guide rod that passes through the shaft hole 116 of the bushing portion 114 to guide the mirror group unit 110 to move along the first direction X or the second direction X'.

[0038] The transmission unit 130 includes a gear set 131, a screw 132, and a fixing member 133. The fixing member 133 can be a nut or other fastening component. The fixing member 133 includes a body portion 1331 with a threaded hole 1337, a bent portion 1333 extending from the body portion 1331, and a first connecting portion 1335 extending from the bent portion 1333 in a third direction Y. The body portion 1331 contacts the contact portion 112 of the mirror group unit 110. Notably, the bent portion 1333 extending from the body portion 1331 creates a space between the first connecting portion 1335 of the fixing member 133 and the second connecting portion 113 of the mirror group unit 110 to accommodate the buffer unit 140 (e.g., ...). Figure 1 (As shown). The screw 132 is fixed to the gear set 131 and passes through the threaded hole 1337 and the through hole 117.

[0039] In this embodiment, the buffer unit 140 includes at least one spring. One end of the spring is connected to the first connecting portion 1335 of the fixing member 133, and the other end is connected to the second connecting portion 113 of the mirror group unit 110. Since the extension directions of the first connecting portion 1335 (extending in the third direction Y) and the second connecting portion 113 (extending in the fourth direction Z) are perpendicular to each other, the spring will not easily detach from the connection.

[0040] In this embodiment, the drive unit 120 is a motor, which can output power to drive the mirror group unit 110 to move along the first direction X via the transmission unit 130 and the buffer unit 140, or drive the mirror group unit 110 to move along the second direction X' via the transmission unit 130. The specific description is as follows:

[0041] Please see Figure 3 , Figure 3 yes Figure 1The lens barrel 111 of the lens assembly 10 is shown in a front view at its lowest point. As shown, the lens barrel 111 is retracted into the lens housing (not shown) and located at its lowest point. The drive unit 120 outputs power to rotate the gear set 131, which in turn drives the screw 132 to rotate. The fixing member 133 is restricted by the surrounding structure (not shown) within the lens housing (not shown) and cannot rotate. Therefore, it will move along the screw 132 in the first direction X. As mentioned above, one end of the buffer unit 140 is connected to the first connecting part 1335 of the fixing member 133, and the other end is connected to the second connecting part 113 of the lens group unit 110. Therefore, when the fixing member 133 moves in the first direction X, the lens barrel 111, which is indirectly connected to the second connecting part 113, can be pulled in the first direction X via the buffer unit 140 until the lens barrel 111 extends out of the lens housing (not shown) and is located at its lowest point. Figure 4 The highest point position shown.

[0042] To make the movement of the lens barrel 111 in the first direction X more smooth and efficient, the lens assembly 10 may further include an auxiliary unit (not shown). The auxiliary unit may be, for example, a compression spring or a tension spring, one end of which is directly or indirectly connected to the lens housing (not shown), and the other end of which abuts against the lens group unit 110, which is directly or indirectly connected to it. By cooperating with the buffer unit 140, the movement of the lens group unit 110 can be made more smooth and efficient.

[0043] When the drive unit 120 outputs power to cause the gear set 131 to rotate in the opposite direction, it will drive the fixing member 133 to move along the screw 132 in the second direction X' via the screw 132. At this time, the body part 1331 of the fixing member 133 can press down on the contact part 112 of the lens group unit 110, so that the lens barrel 111, which is (indirectly) connected to the contact part 112, also moves in the second direction X' until the lens barrel 111 retracts into the lens housing (not shown) and returns to its original position. Figure 3 The lowest point position is shown.

[0044] When the lens barrel 111 extends out of the lens housing (not shown), as Figure 4 As shown, if subjected to an external impact, such as the lens assembly 10 falling to the ground, the lens barrel 111 will retract inward, and the impact force can be transmitted through the lens barrel 111 to the buffer unit 140, causing the buffer unit (spring) 140 to deform and absorb the impact force. Figure 5 As shown, this avoids damage caused by the mirror group unit 110 bearing all the impact force.

[0045] Please see Figure 6 , 7 , Figure 6 This is a schematic diagram of the lens device 20 according to the second embodiment of the present invention; Figure 7 yes Figure 6An exploded view of the lens assembly 20 is shown. As illustrated, the lens assembly 20 of the present invention includes a lens housing (not shown) for housing a lens group unit 210, a drive unit 220, a transmission unit 230, a buffer unit 240, and a guide unit 250. Details of each component are described below:

[0046] The lens group unit 210 includes at least one lens group (not shown) disposed within the lens barrel 211. A bushing portion 214 is provided on the side circumferential surface of the lens barrel 211, extending along a first direction X or a second direction X', and the bushing portion 214 has a shaft hole 216. A contact portion 212 connects both the side circumferential surface of the lens barrel 211 and the bushing portion 214. The contact portion 212 is plate-shaped, and has a through hole 217 and an opening 218, with the opening 218 being closer to the bushing portion 214 than the through hole 217. Notably, the opening 218 on the contact portion 212 is for accommodating a buffer unit 240 (such as...). Figure 6 As shown, the second connecting portion 213 extends from the bushing portion 214 toward the fifth direction Y', and the second connecting portion 213 is in the shape of a protrusion. The second direction X' is opposite to the first direction X, and the fifth direction Y' is perpendicular to both the first direction X and the second direction X'.

[0047] The guiding unit 250 includes a guide rod that passes through the shaft hole 216 of the bushing portion 114 to guide the mirror group unit 210 to move along the first direction X or the second direction X'.

[0048] The transmission unit 230 includes a gear set 231, a screw 232, and a fixing member 233. The fixing member 233 is plate-shaped and includes a body portion 2331 with a threaded hole 2337 and a first connecting portion 2335 extending Y-direction from the body portion 2331. The body portion 2331 contacts the contact portion 212 of the mirror group unit 210. The screw 232 is fixed to the gear set 231 and passes through the threaded hole 2337 and the through hole 217.

[0049] In this embodiment, the buffer unit 240 includes at least one spring. One end of the spring is connected to the first connecting portion 2335 of the fixing member 233, and the other end is connected to the second connecting portion 213 of the mirror group unit 210. Since the first connecting portion 2335 (extending towards the third direction Y) and the second connecting portion 213 (extending towards the fifth direction Y') have opposite extension directions, the spring will not easily detach from the connection.

[0050] In this embodiment, the drive unit 220 is a motor, which can output power to drive the mirror group unit 210 to move along the first direction X via the transmission unit 230 and the buffer unit 240, or drive the mirror group unit 210 to move along the second direction X' via the transmission unit 230. The specific description is as follows:

[0051] Please see Figure 8 , Figure 8 yes Figure 6 The lens barrel 211 of the lens assembly 20 is shown in a front view at its lowest point. As shown, the lens barrel 211 is retracted into the lens housing (not shown) and located at its lowest point. The drive unit 220 outputs power to rotate the gear set 231, which in turn drives the screw 232 to rotate. The fixing member 233 is restricted from rotating within the lens housing (not shown) by the surrounding structure (not shown), and therefore moves along the screw 232 in the first direction X. At the same time, the fixing member 233 can pull the lens barrel 211 to move in the first direction X via the buffer unit 240, until the lens barrel 211 extends out of the lens housing (not shown) and is located at its lowest point. Figure 9 The highest point position shown.

[0052] Similar to the first embodiment, in order to make the movement of the lens barrel 211 in the first direction X more stable and efficient, the lens device 20 may further include an auxiliary unit (not shown). The auxiliary unit may be, for example, a compression spring or a tension spring, one end of which is directly or indirectly connected to the lens housing (not shown), and the other end of which abuts against or is directly or indirectly connected to the lens group unit 210. By cooperating with the buffer unit 240, the movement of the lens group unit 210 can be made more stable and efficient.

[0053] When the drive unit 220 outputs power to cause the gear set 231 to rotate in the opposite direction, it will drive the fixing member 233 to move along the screw 232 in the second direction X' via the screw 232. At this time, the body part 2331 of the fixing member 233 can press down on the contact part 212 of the lens group unit 210, causing the lens barrel 211 to also move in the second direction X' until the lens barrel 211 retracts into the lens housing (not shown) and returns to its original position. Figure 8 The lowest point position is shown.

[0054] When the lens barrel 211 extends out of the lens housing (not shown), as Figure 9 As shown, if subjected to an external impact, the lens barrel 211 will retract inward, and the impact force can be transmitted through the lens barrel 211 to the buffer unit 240, causing the buffer unit (spring) 240 to deform and absorb the impact force, such as... Figure 10 As shown, this avoids damage caused by the mirror group unit 210 bearing all the impact force.

[0055] Please see Figure 11 , 12 , Figure 11 This is a schematic diagram of the lens device 30 according to the third embodiment of the present invention; Figure 12 yes Figure 11An exploded view of the lens assembly 30 is shown. As illustrated, the lens assembly 30 of the present invention includes a lens housing 340, which includes a cover portion 342 and a main body portion 344. The cover portion 342 and the main body portion 344 are connected to form a receiving space for accommodating the lens group unit 310, the drive unit 320, the transmission unit 330, and the guide unit 350. Details of each component are described below:

[0056] An opening 341 is provided on the cover portion 342, through which the lens group unit 310 can protrude from the lens housing 340 or retract into the lens housing 340.

[0057] The lens group unit 310 includes at least one lens group (not shown) and is disposed inside the lens barrel 311. A bushing portion 314 is provided on the outer peripheral wall of the lens barrel 311. A connecting portion 312 is connected to the bushing portion 314. The connecting portion 312 is plate-shaped and has a through hole 317.

[0058] The guide unit 350 includes a guide rod that passes through the bushing portion 314 to guide the lens group unit 310 to move along the first direction X to protrude from the lens housing 340, or to move along the second direction X' to retract into the lens housing 340.

[0059] The transmission unit 330 includes a gear set 331, a screw 332, and a fixing member 333. The fixing member 333 is screwed into the screw 332 and fixedly connected to the connecting part 312 of the mirror group unit 310. The screw 332 is fixedly connected to the gear set 331, screwed into the fixing member 333, and passes through the through hole 317.

[0060] In this embodiment, the drive unit 320 is a motor that can output power to rotate the gear set 331, thereby driving the screw 332 to rotate. The fixing member 333 is restricted by the surrounding structure (not shown) within the lens housing 340 and cannot rotate. Therefore, it will move along the screw 332 in the first direction X or the second direction X', and then via the connecting part 312, it will drive the lens group unit 310 to move along the first direction X to protrude from the lens housing 340, or move along the second direction X' to retract into the lens housing 340.

[0061] As mentioned above, the lens assembly 310 has a lens barrel 311, and the lens housing 340 has a cover 342, on which an opening 341 is provided. Please refer to [link / reference]. Figure 13 , Figure 13 yes Figure 12As shown in the enlarged cross-sectional view of the dashed portion III of the lens assembly, a gap 370 is formed between the inner side 343 of the opening 341 and the outer peripheral wall 318 of the lens barrel 311. The present invention provides a waterproof silicone element 360 at this gap 370, and this silicone element 360 simultaneously contacts the cover 342 of the lens housing 340 and the lens barrel 311 of the lens group unit 310. Due to the elasticity and sealing properties of the silicone material, the silicone element 360 can still closely adhere to the lens barrel 311 and the cover 342 when the lens group unit 310 moves, preventing water leakage. That is, external moisture (such as rainwater) cannot enter the lens housing 340 through the gap 370 where the silicone element 360 is located.

[0062] For waterproofing purposes, the cover 342 is not an assembly of multiple parts but a single molded piece. This minimizes gaps between parts and facilitates waterproofing. Therefore, it is preferable that the cover 342 is integrally molded with a soft part (such as silicone 360, rubber, adhesive, or soft plastic). The cover 342 also serves as a mechanism for fixing other components such as the mirror group unit 310, drive unit 320, transmission unit 330, and guide unit 350. Since the integral molding improves the overall shape for easier assembly and alignment, and provides axial positioning, this invention offers greater assembly efficiency compared to conventional methods that require additional positioning and alignment.

[0063] Furthermore, the drive unit 320 is preferably disposed on or connected to the main body 344, or integrally formed with the main body 344. In addition to the properties of silicone, the present invention further utilizes the shape of the silicone part 360 to enhance the waterproof effect, as detailed below:

[0064] The silicone part 360 is ring-shaped and surrounds the lens barrel 311, such as Figure 13 As shown, the silicone component 360 includes a body 361, first flanges 362 and 362', and a second flange 363. The body 361 extends along a first direction X or a second direction X' (i.e., the direction of movement of the lens assembly unit 310), and thus includes opposing first ends 364 and second ends 365. The first flanges 362 and 362' extend from the first ends 364 toward the lens barrel 311 and abut against the lens barrel 311. Notably, the first flanges 362 and 362' are inclined relative to the surface of the lens barrel 311, and their cross-section is herringbone-shaped. The second flange 363 extends from the second ends 365 away from the lens barrel 311 and contacts the cover portion 342 of the lens housing 340. When the lens assembly unit 310 moves along the first direction X or the second direction X', the first flanges 362 and 362' bear pressure, which can enhance the tightness of the silicone component 360 and the lens barrel 311.

[0065] When the lens group unit 310 moves along the first direction X, the first flange 362 moves against the lens barrel 311 in the opposite direction and thus bears greater pressure than the first flange 362', which can enhance the tightness between the silicone part 360 and the lens barrel 311. Conversely, when the lens group unit 310 moves along the second direction X', the first flange 362' moves against the lens barrel 311 in the opposite direction and bears greater pressure than the first flange 362 (or the pressure of the two is approximately the same), thus still ensuring the tightness between the silicone part 360 and the lens barrel 311.

[0066] In the above embodiments, the silicone part 360 has two first flanges 362 and 362', but the present invention is not limited thereto. The silicone part may also include one, three or more first flanges. In addition, the first flanges do not necessarily have to be inclined to the lens barrel surface, but can be changed to be perpendicular to the lens barrel surface. Different changes result in different degrees of waterproofing, but all can be waterproof and all fall within the scope of the present invention.

[0067] In the above embodiments, the two first flanges 362 and 362' are partially connected to form a herringbone shape. However, it can be understood that the two first flanges 362 and 362' can also be unconnected and extend directly from the body 361 to form a figure-eight shape, still having excellent sealing and waterproof effect.

[0068] In this embodiment, the lens device 30 may also include the buffer units 140 and 210 in the first and second embodiments. Since they have the same structure and content, they will not be described again here.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lens device, characterized in that, include: Mirror group unit; A guiding unit, connected to the mirror group unit, is used to guide the mirror group unit to move along a first direction or a second direction; The transmission unit includes a fixed component; and A drive unit, connected to the transmission unit, is used to output power to drive the mirror group unit to move along the first direction via the transmission unit, or to drive the mirror group unit to move along the second direction via the transmission unit. The fastener includes a body portion and a bent portion, which extends from the body portion and is used to create a space between the fastener and the mirror group unit. The lens assembly also includes a buffer unit connected between the lens group unit and the transmission unit. The drive unit drives the lens group unit to move along the first direction via the transmission unit and the buffer unit. When the lens group unit is impacted by an external force, the external force is transmitted to the buffer unit via the lens group unit.

2. The lens device as claimed in claim 1, characterized in that, Including: The lens housing accommodates the lens group unit. When the lens group unit moves along the first direction, the lens group unit extends out of the lens housing. When the lens group unit moves along the second direction, the lens group unit retracts into the lens housing. The space created between the fastener and the mirror group unit is used to accommodate the buffer unit; The transmission unit further includes a screw, the fixing member is screwed onto the screw, and the drive unit outputs power to rotate the screw, thereby driving the fixing member to move along the first direction or the second direction.

3. The lens device as described in claim 2, characterized in that, It also includes an auxiliary unit connected between the lens group unit and the lens housing, used to cooperate with the buffer unit to move the lens group unit along the first direction, which is opposite to the second direction; wherein the lens group unit has an optical axis, and the first direction and the second direction are parallel to the optical axis.

4. The lens device as claimed in claim 3, characterized in that, When the drive unit outputs power to the transmission unit, the mirror group unit can be moved along the second direction by the body part contacting and pressing the mirror group unit.

5. The lens device as described in claim 4, characterized in that, The lens unit includes a contact portion, and the fixing member is a nut. The body portion of the nut contacts and presses against the contact portion of the lens unit, causing the lens unit to move along the second direction. The body portion is provided with a threaded hole, and the contact portion is provided with a through hole. The screw passes through both the threaded hole and the through hole.

6. The lens device as claimed in claim 3, characterized in that, The mirror unit includes a contact portion. When the drive unit outputs power to the transmission unit, the main body applies pressure to the contact portion of the mirror unit, causing the mirror unit to move along the second direction. The contact portion is provided with an opening for the buffer unit to pass through.

7. The lens device as claimed in claim 6, characterized in that, The fastener is a nut, the body of which has a threaded hole and the contact part has a through hole, through which the screw passes.

8. The lens device as claimed in any one of claims 5 or 7, characterized in that, The nut further includes a first connecting portion, and the mirror group unit includes a second connecting portion. The first connecting portion extends in a third direction, and the second connecting portion extends in a fourth or fifth direction. The third direction is perpendicular to the fourth direction and opposite to the fifth direction. The buffer unit includes a spring, one end of which is connected to the first connecting portion, and the other end of which is connected to the second connecting portion.

9. The lens device according to any one of claims 1-7, characterized in that, The lens assembly also includes: a lens housing with openings; and flexible components; The lens group unit is movably disposed within the lens housing. When moving, it can protrude from or retract into the lens housing through the opening. The lens group unit includes a lens barrel, and a gap is formed between the outer peripheral wall of the lens barrel and the inner side of the opening. The flexible component is disposed between the lens housing and the lens barrel; The lens housing includes a cover and a main body. The cover and the main body are connected to form a receiving space to accommodate the lens group unit. The opening is provided on the cover. The drive unit is integrally formed with the main body or the cover is integrally formed with the flexible component. The flexible component is made of silicone, rubber, glue, or soft plastic. The flexible component includes a body, a first flange extending from the body toward the lens barrel, and a second flange extending from the body away from the lens barrel. The first flange abuts against the lens barrel, and the second flange contacts the lens housing.

10. The lens device as claimed in claim 9, characterized in that, The first flange extends toward the lens barrel in an inclined or perpendicular manner relative to the lens barrel surface. There are multiple first flanges extending from the body toward the lens barrel. These first flanges abut against the lens barrel. The first flanges extend toward the lens barrel in different directions. The flexible member is held by the lens housing and the lens barrel.

11. The lens device as claimed in claim 10, characterized in that, The flexible component and these first flanges are all annular and surround the lens barrel, and the cross-section of these first flanges is herringbone or figure-eight shaped.

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