lens

Abstract

The present application relates to a lens, comprising a housing, a lens assembly, and a focusing mechanism. The housing is used to connect to a light source and to support the fixed focusing mechanism. The lens assembly is fixedly connected to the housing and is used to refract laser light emitted by the light source and transmit it outside the housing. The focusing mechanism includes a zoom assembly, a power input member, an electric focusing assembly, and a manual focusing assembly. The zoom assembly includes an axially sliding guide sleeve and an axially sliding drive sleeve. The power input member is used to be fixedly connected to the axially sliding drive sleeve and to drive the axially sliding drive sleeve to rotate on a fixed axis. The manual focusing assembly includes a dynamic power output member movably connected to the housing and used to engage with the power input member. The electric focusing assembly is used to be fixedly connected to the housing and to engage with the power input member and drive the power input member to rotate on a fixed axis. The present application has the advantages of fast response, strong human intervention resistance, and strong anti-interference degree.

Description

Technical Field

[0001] The present application relates to the field of laser zoom devices, and in particular to a lens. Background Art

[0002] Laser dazzlers are non-lethal laser devices used in specific environments. They can effectively deter criminal suspects by causing them to experience a momentary "laser stun" effect. They can also effectively disrupt criminal suspects' attempts to spy using micro-light tubes, night vision goggles, and cameras.

[0003] In response to the above-mentioned prior art, the inventors believe that: when dealing with emergencies, the executors need to adjust the laser energy density according to different on-site conditions, that is, adjust the energy per unit area after the laser is shot at the human body. This requires the relevant equipment to be able to achieve the effects of rapid response, strong operability, and simple operation. It also requires that when facing unpredictable emergencies, the adjustment of the laser energy can achieve the effects of strong human intervention, fast execution speed, and strong anti-interference. Summary of the Invention

[0004] In order to meet the requirements of fast response, strong operability, simple operation, strong human intervention, fast execution speed and strong anti-interference in the laser energy adjustment process, the present application provides a lens.

[0005] This application provides a lens that adopts the following technical solution:

[0006] A lens comprises a housing, a lens assembly and a focusing mechanism, wherein the housing is used to connect with a light source and to support and fix the focusing mechanism; the lens assembly is fixedly connected to the housing and is used to refract the laser light emitted by the light source and then emit it outside the housing; the lens assembly comprises a lens seat located inside the housing and sliding relative to the housing in the direction of emission of the light source, the lens seat being used to support and fix the lens; the focusing mechanism comprises a zoom assembly, a power input member, an electric focusing assembly and a manual focusing assembly; the zoom assembly comprises an axial sliding guide sleeve and an axial sliding drive sleeve, the axial sliding guide sleeve being fixedly connected to the housing and being sleeved on the lens seat to adjust the focus of the lens; The lens seat is subject to circumferential limit; the axial sliding drive sleeve is used to be mounted on the lens assembly and rotate relative to the fixed axis of the shell and is used to drive the lens seat to slide along the emission direction of the light source; the power input piece is used to be fixedly connected to the axial sliding drive sleeve and is used to drive the axial sliding drive sleeve to rotate on the fixed axis; the manual focusing assembly includes a dynamic power output piece movably connected to the shell and used to engage with the power input piece, and the dynamic power output piece is used to slide to engage with the power input piece and drive the power input piece to rotate on the fixed axis; the electric focusing assembly is fixedly connected in the shell and is used to engage with the power input piece and drive the power input piece to rotate on the fixed axis.

[0007] By adopting the above technical solution, before use, the light source is connected to the housing, and the laser light generated by the light source is refracted through the lens assembly within the housing and emitted from the housing. When the energy density of the emitted laser light needs to be adjusted, the electric focusing mechanism can be used to drive the fixed axis of the power input member to rotate, causing the power input member to drive the fixed axis of the axial sliding drive sleeve to rotate. Because the lens holders are circumferentially limited by the axial sliding guide sleeve, the axial sliding drive sleeve can drive all lens holders to slide along the emission direction of the light source. During the sliding process of the lens holders, the laser light is reflected and the focus is changed, that is, the spot size of the laser light emitted from the housing changes, thereby changing the energy density of the laser light and adjusting the energy per unit area of ​​the laser light emitted on the human body. In the face of certain unexpected situations, the reaction speed, response speed, and control stability of the electric focusing mechanism are all challenged. Therefore, by moving the dynamic power output member, the dynamic power output member is engaged with the power input member, and the dynamic power output member is rotated to drive the fixed axis of the power input member to rotate. This can also cause the axial sliding drive sleeve to move relative to the housing, thereby enabling all drive sleeves to move along the laser emission direction, achieving the purpose of changing the focus of the laser light emitted from the housing.

[0008] Optionally, the axial sliding guide sleeve is formed with an axial sliding guide groove arranged along the emission direction of the light source, and the axial sliding drive sleeve is formed with an axial sliding drive groove set at an angle to the axial sliding guide groove; a directional sliding limit column is fixedly connected to the lens seat for being simultaneously inserted into the axial sliding guide groove and the axial sliding drive groove.

[0009] By adopting the above technical solution, when the axial sliding drive sleeve moves along the laser emission direction, since the directional sliding limit column is simultaneously inserted into the axial sliding drive groove and the axial sliding guide groove, and the axial sliding drive groove and the axial sliding guide groove are set at an angle, the directional sliding limit column will be subject to the circumferential upper limit of the axial sliding guide groove, and will also be subject to the thrust in the laser direction of the axial sliding drive groove. Therefore, the lens holder connected to the directional sliding limit column can move along the laser emission direction, thereby achieving the change of the focus of the laser emitted from the shell, thereby changing the energy density of the laser.

[0010] Optionally, the electric focusing mechanism includes a steady-state power output part for engaging with a power input part and a steady-state power source fixed in the shell and used to drive the steady-state power output part; the torque applied to the steady-state power output part is m, and the steady-state power source is provided with an adjusting elastic part for locking the steady-state power output part to the output end of the steady-state power source when m⊂preset torque range.

[0011] By adopting the above technical solution, the user can adjust the material or size of the adjustable elastic member to determine the maximum torque that the stable power output member can withstand when the adjustable elastic member locks the stable power output member to the output end of the stable power source. Because the power input member is mounted on the axially sliding drive sleeve and rotates to drive the axially sliding drive sleeve, thereby achieving movement of the lens holder, the stable power output member, which is adapted to be connected to the axially sliding drive sleeve, is subject to torque from the power input member. When the lens holder moves to the maximum stroke or the force output by the steady-state power source is insufficient to drive the steady-state power output part due to external obstruction, the steady-state power source continues to work, causing the torque on the steady-state power output part to become larger and larger. When the torque on the steady-state power output part is greater than the above-mentioned preset torque maximum value, the adjusting elastic part can no longer lock the steady-state power output part on the output end of the steady-state power source. The steady-state power source turns to work on the adjusting elastic part, causing the adjusting elastic part to deform or maintain deformation. In this way, the work of the output end of the steady-state power source is no longer affected by the steady-state power output part, reducing the possibility of the steady-state power source getting stuck or burning. In addition, this setting can also be adapted to the manual focusing component. When the electric focusing component cannot achieve the effect expected by the user, the manual focusing component interfering with the movement of the lens holder will not cause the steady-state power source to get stuck or burn, thereby improving the working stability.

[0012] Optionally, the manual focusing assembly further includes a reset elastic member fixedly connected to the interior of the housing and used to drive the dynamic power output member to separate from the power input member.

[0013] By adopting the above technical solution, the electric focusing assembly is the normal way to adjust the laser energy density. Therefore, after the manual focusing assembly is used, the dynamic power output part and the power input part need to be disconnected. The reset elastic part can apply force to the dynamic power output part. When the user no longer applies force to drive the dynamic power output part and the power input part to adapt and connect, the reset elastic part drives the two to disconnect.

[0014] Optionally, the shell is provided with a connecting seat for supporting and fixing the dynamic power output part and rotating synchronously with the dynamic power output part. The dynamic power output part is slidingly connected to the connecting seat, and the reset elastic part includes a reset spring fixedly connected to the connecting seat and used to drive the dynamic power output part to disengage from the power input part.

[0015] By adopting the above technical solution, when the manual focusing assembly needs to interfere with the movement of the lens holder, the dynamic power output member is slid to engage with the power input member, and the dynamic power output member is rotated to drive the power input member to rotate, thereby achieving sliding of the lens holder. When the manual focusing assembly is no longer needed to adjust the laser energy density, the force applied to the dynamic power output member is simply removed. The return spring can convert the elastic potential energy into an elastic force applied to the connecting seat and the dynamic power output member. Since the dynamic power output member is slidably connected to the connecting seat, and the connecting seat is connected to the housing, the return spring can push the dynamic power output member away from the power input member, thereby achieving separation between the dynamic power output member and the power input member.

[0016] Optionally, the shell is provided with a travel limit groove for providing a sliding path for the connecting seat, and the shell is provided with a manual focusing sleeve for covering the travel limit groove and rotating synchronously with the connecting seat, and the dynamic power output part includes a pressing end extending out of the manual focusing sleeve.

[0017] By adopting the above technical solution, the connector rotates with the dynamic power output member, necessitating a sliding path for the connector on the housing. The manual focusing sleeve can cover this sliding path, which not only aesthetically pleasing but also reduces the possibility of external dust entering the housing through the sliding path and contaminating the lens. Furthermore, the manual focusing sleeve, which is mounted on the housing and covers the sliding path, is easy for the user to grip, allowing the user to rotate the dynamic power output member by turning the manual focusing sleeve.

[0018] Optionally, a dust cover for sealing a gap between the pressing end and the manual focusing sleeve is fixedly connected to the manual focusing sleeve, and the dust cover is provided with a deformable portion for pressing the dynamic power output component.

[0019] By adopting the above technical solution, the dust cover further limits the possibility of external dust entering the shell through the connection between the dynamic power output part and the connecting seat, reduces the possibility of the lens in the shell being contaminated, and improves the working stability of the lens assembly; in addition, the setting of the deformable part makes it easier for the user to drive the dynamic power output part to move toward the power input part by pressing, and make the two adaptable and connected.

[0020] Optionally, the power input member includes a gear ring coaxially fixedly connected to the axial sliding drive sleeve, and the electric focusing mechanism includes a motor fixedly connected to the housing and a gear connected to the output shaft of the motor.

[0021] By adopting the above technical solution, the transmission structure of the gear and the gear ring is simple, widely available, and easy to maintain.

[0022] Optionally, the adjusting elastic member includes an adjusting spring sleeved on the output shaft, and the output shaft of the motor is movably connected with an adjusting retaining ring for pressing the adjusting spring and pressing the adjusting spring against the gear.

[0023] By adopting the above technical solution, the elastic force of the spring presses the gear against the output shaft of the motor, and the gear and the motor output shaft are connected by friction; when the gear ring has no rotation margin in the current direction, the friction between the gear and the motor is insufficient to overcome the resistance to the gear rotation. At this time, the output shaft of the motor will rotate on its own, reducing the possibility of the motor getting stuck and burning.

[0024] Optionally, the dynamic power output component includes a manual pressure rod that is slidably connected to the housing and is used to drive the gear ring to rotate on a fixed axis after being engaged with the gear ring.

[0025] By adopting the above technical solution, the manual pressure rod is a rod-shaped structure with a simple structure, low processing cost and easy maintenance.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Before use, connect the light source to the housing and allow the laser light generated by the light source to be refracted through the lens assembly within the housing before exiting the housing. To adjust the energy density of the emitted laser light, the motorized focusing mechanism can be used to drive the fixed axis of the power input member to rotate, causing the power input member to drive the fixed axis of the axial sliding drive sleeve to rotate. Because the lens holders are circumferentially limited by the axial sliding guide sleeve, the axial sliding drive sleeve can drive all lens holders to slide in the direction of the light source's emission. As the lens holders slide, the laser light is reflected, causing the focus to change. This changes the spot size of the laser light emitted from the housing, thereby changing the laser energy density and adjusting the energy per unit area of ​​the laser light emitted on the human body. In some unexpected situations, the reaction speed, response speed, and control stability of the motorized focusing mechanism may be challenged. Therefore, by moving the dynamic power output member, engaging it with the power input member, and rotating the dynamic power output member to drive the fixed axis of the power input member, the axial sliding drive sleeve can also be moved relative to the housing, thereby enabling all drive sleeves to move in the direction of laser emission, thereby achieving the purpose of changing the focus of the laser light emitted from the housing.

[0028] 2. By varying the material or dimensions of the adjustable elastic member, the user can determine the maximum torque the stable power output member can withstand when the adjustable elastic member locks the stable power output member to the output end of the stable power source. Because the power input member is mounted on the axially sliding drive sleeve and its rotation drives the axially sliding drive sleeve, thereby moving the lens holder, the stable power output member, which is adapted to connect to the axially sliding drive sleeve, is subject to torque from the power input member. When the lens holder moves to the maximum stroke or the force output by the steady-state power source is insufficient to drive the steady-state power output part due to external obstruction, the steady-state power source continues to work, causing the torque on the steady-state power output part to become larger and larger. When the torque on the steady-state power output part is greater than the above-mentioned preset torque maximum value, the adjusting elastic part can no longer lock the steady-state power output part on the output end of the steady-state power source. The steady-state power source turns to work on the adjusting elastic part, causing the adjusting elastic part to deform or maintain deformation. In this way, the work of the output end of the steady-state power source is no longer affected by the steady-state power output part, reducing the possibility of the steady-state power source getting stuck or burning. In addition, this setting can also be adapted to the manual focusing component. When the electric focusing component cannot achieve the effect expected by the user, the manual focusing component interfering with the movement of the lens holder will not cause the steady-state power source to get stuck or burn, thereby improving the working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram showing the lens structure in the embodiment.

[0030] Figure 2 Schematic diagram showing the position of the zoom component in the embodiment.

[0031] Figure 3 Schematic diagram showing the structure of the lens holder in the embodiment.

[0032] Figure 4 Schematic diagram showing the structure of the zoom component in the embodiment.

[0033] Figure 5 Schematic diagram showing the structure of a manual focusing component in an embodiment.

[0034] Figure 6 Schematic diagram showing the position of the manual focus sleeve in the embodiment.

[0035] Figure 7 Schematic diagram showing the structure of the electric focusing assembly in the embodiment.

[0036] Explanation of the accompanying drawings: 1. Shell; 11. Light input end; 12. Light output end; 13. Travel limit groove; 14. Sealing ring; 2. Lens assembly; 21. Lens seat; 211. Main body support plate; 212. Outer connecting ring; 213. Inner connecting ring; 22. Directional sliding limit column; 23. Lens; 24. Pressure ring; 3. Zoom assembly; 31. Axial sliding drive sleeve; 311. Axial sliding drive groove; 32. Axial sliding guide sleeve; 321. Axial sliding guide groove; 4. Electric focusing assembly; 41. Steady-state power source; 42. Retaining ring; 43. Steady-state power output part; 44. Adjusting elastic part; 45. Adjusting retaining ring; 5. Manual focusing assembly; 51. Connecting seat; 52. Reset elastic part; 53. Limiting plate; 54. Manual pressure rod; 55. Manual focusing sleeve; 56. Dust cover; 6. Power input part; 61. Connecting tube. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field based on their understanding of the inventive concept of the present invention are all within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] To facilitate understanding of the lens provided in the embodiments of this application, its application scenario is first described. The lens provided in this application is used to connect to a laser generator and change the spot size of the laser emitted by the laser generator. It is often used in riot control equipment. In order to be able to suppress the riot target in a timely manner, the relevant riot control equipment is required to achieve the effects of rapid response, strong operability, and simple operation. In order to deal with emergencies during the riot control process, the riot control equipment is also required to have strong human intervention, fast execution speed, and strong anti-interference effect.

[0040] First reference Figure 1 and Figure 2 , Figure 1 is a schematic diagram showing the lens structure in an embodiment, Figure 2Schematic diagram showing the position of zoom assembly 3 in an embodiment. This embodiment of the present application provides a lens comprising a housing 1, a lens assembly 2, and a focusing mechanism. Housing 1 serves as a mounting platform for the focusing mechanism and is provided with a light input end 11 and a light output end 12. Light input end 11 is used to connect to a laser generator, and lens assembly 2 is used to mount a lens. Laser light is refracted by the lens and then emitted from the lens through light output end 12, forming a light spot at the target. The direction in which the laser light passes through the lens and is emitted is the laser emission direction. Lens assembly 2 is slidably connected to the interior of housing 1 along the laser emission direction.

[0041] The focusing mechanism includes a zoom assembly 3 for fixing and supporting the lens assembly 2 and driving the lens assembly 2 to slide along the laser emission direction, a power input member 6 fixedly connected to the zoom assembly 3, a manual focusing assembly 5 for driving the power input member 6 to rotate, and an electric focusing assembly 4 for driving the power input member 6 to rotate. The zoom assembly 3 changes the focus of the laser by driving the lens assembly 2 to slide, thereby changing the size of the laser spot emitted by the laser on the target.

[0042] When assembling the above structure, the lens assembly 2 is located in the shell 1 and on the laser emission path, the zoom assembly 3 is installed in the shell 1 and sleeved on the lens assembly 2, the power input part 6 is coaxially sleeved on the zoom assembly 3, the manual focus assembly 5 and the electric focus assembly 4 are respectively arranged on both sides of the zoom assembly 3 and are both installed on the shell 1.

[0043] Continue to read Figure 1 and Figure 2 For example, the housing 1 is a hollow cylindrical structure that encloses the lens assembly 2, zoom assembly 3, power input 6, manual focus assembly 5, and electric focus assembly 4, thereby reducing the possibility of external dust adhering to the lens assembly 2 and causing contamination. This arrangement also results in a compact internal structure within the housing 1, with no interference between the various structures. The connection strength of each area within the housing 1 is more consistent, making it more user-friendly for industrial production and assembly.

[0044] It should be understood that in addition to the above-mentioned installation method, there are other installation methods. For example: the shell 1 includes two parts evenly divided along the laser emission direction, and the two parts are connected by claws and buckles. This installation method facilitates observation of the transmission connection relationship between the various components and facilitates self-inspection and maintenance by users; the manual focusing assembly 5 and the electric focusing assembly 4 are located on the same side of the zoom assembly 3, specifically: the manual focusing assembly 5 and the electric focusing assembly 4 are both installed below the lens assembly 2. This installation method can provide the user with a larger field of view when aiming.

[0045] refer to Figure 2 and Figure 3 , Figure 3This is a schematic diagram illustrating the structure of the lens holder 21 in the embodiment. The lens assembly 2 includes the lens holder 21, a directional sliding stop post 22, and a lens 23. The lens holder 21 is used to support the directional sliding stop post 22 and the lens 23. The directional sliding stop post 22 is fixedly connected to the outer wall of the lens holder 21 and is used to connect to the zoom assembly 3. The lens 23 is mounted on the lens holder 21 and is used to refract laser light.

[0046] Exemplarily, the lens holder 21 includes a main support plate 211 as a bearing structure and an inner connecting ring 213 fixedly connected to the main support plate 211. The main support plate 211 has a through hole for the laser to pass through, and the lens 23 is embedded in the inner connecting ring 213 and corresponds to the position of the through hole on the main support plate 211.

[0047] Continue to refer Figure 2 and Figure 3 In a preferred embodiment, the lens holder 21 further includes a pressure ring 24 embedded in the inner connecting ring 213. A step is formed in the inner connecting ring 213 for contacting the lens 23, and a groove is formed on the inner wall of the inner connecting ring 213 to fit with the pressure ring 24. The pressure ring 24 is embedded in the groove of the inner connecting ring 213 to achieve fixation and press the lens 23 against the step in the inner connecting ring 213.

[0048] Continue to refer Figure 2 and Figure 3 In a preferred embodiment, the lens holder 21 further includes an outer connecting ring 212 fixedly connected to the main support plate 211. The main support plate 211 is a thin plate, with a gap between the outer connecting ring 212 and the inner connecting ring 213. The directional sliding limit post 22 is fixedly connected to the outer wall of the outer connecting ring 212. This arrangement not only reduces the weight of the lens holder 21, allowing the zoom assembly 3 to more easily drive the lens holder 21 to slide, but also saves material for the lens holder 21, reducing manufacturing costs.

[0049] It should be understood that there is no restriction on the number of lens holders 21. In a preferred embodiment, there are two lens holders 21, distributed along the laser emission direction. Since one lens holder 21 and another number of lens holders 21 do not affect the structure, positional relationship, and connection relationship of other components, and increasing the number of lens holders 21 to achieve different laser spot variation effects is a solution included in this application, this embodiment is only described based on the case of one lens holder 21, but does not mean that solutions with other numbers of lens holders 21 are not included.

[0050] refer to Figure 3 and Figure 4 , Figure 4This is a schematic diagram illustrating the structure of the zoom assembly 3 in an embodiment. The zoom assembly 3 comprises an axially sliding guide sleeve 32 fixedly connected to the housing 1 and an axially sliding drive sleeve 31 rotatably connected within the housing 1. A power input member 6 is fixedly connected to the axially sliding drive sleeve 31 and is used to drive the axially sliding drive sleeve 31 for fixed rotation. The axially sliding guide sleeve 32 is used to circumferentially limit the lens holder 21, allowing it to slide only in the direction of laser emission. The axially sliding drive sleeve 31 is used to drive the lens holder 21 to slide in the direction of laser emission.

[0051] Exemplarily, the axial sliding drive sleeve 31 is coaxially mounted on the axial sliding guide sleeve 32 and rotates relative to the axial sliding guide sleeve 32. The sidewall of the axial sliding guide sleeve 32 is provided with an axial sliding guide groove 321 arranged along the laser emission direction, and the sidewall of the axial sliding drive sleeve 31 is provided with an axial sliding drive groove 311 arranged at an angle to the axial sliding guide groove 321. Specifically, the axial sliding drive groove 311 is arranged in a spiral shape on the axial sliding drive sleeve 31, and the axial sliding drive groove 311 is always connected to the axial sliding guide groove 321 at one point. The directional sliding limit post 22 is inserted into both the axial sliding guide groove 321 and the axial sliding drive groove 311.

[0052] During specific use, the axial sliding drive sleeve 31 rotates with the laser emission direction as the axis, driving the axial sliding drive groove 311 to rotate accordingly. Since the axial sliding guide sleeve 321 is fixedly connected to the shell 1, that is, the axial sliding guide groove 321 is stationary relative to the axial sliding drive groove 311, and the axial sliding drive groove 311 is set at an angle relative to the axial sliding guide groove 321, the directional sliding limit column 22 inserted in the above two grooves at the same time will be pushed by the inner wall of the axial sliding drive groove 311, and then move in the axial sliding guide groove 321 along the laser emission direction, thereby realizing the movement of the lens holder 21, and then changing the focal position of the laser, thereby achieving the purpose of changing the spot size.

[0053] It should be understood that there is a one-to-one correspondence between the aforementioned directional sliding limit posts 22, axial sliding guide grooves 321, and axial sliding drive grooves 311. Specifically, the lens holder 21 is provided with three directional sliding limit posts 22, which are evenly distributed axially on the outer connecting ring 212. There are three axial sliding guide grooves 321, each corresponding to the three directional sliding limit posts 22 on the same lens holder 21. Furthermore, there are three axial sliding drive grooves 311, each corresponding to the three directional sliding limit posts 22 on the same lens holder 21. The provision of three directional sliding limit posts 22 makes the lens holder 21 more stable during movement, while also enhancing the connection strength between the lens holder 21 and the axial sliding guide sleeve 32, improving operational stability.

[0054] refer to Figure 5 and 6 , Figure 5 Schematic diagram showing the structure of the manual focusing assembly 5 in the embodiment. Figure 6 Schematic diagram showing the position of manual focus sleeve 55 in an embodiment. Manual focus assembly 5 includes a dynamic power output member movably connected to housing 1 and adapted to engage with power input member 6. The dynamic power output member is configured to slide until it engages with power input member 6 and drives power input member 6 to rotate about the light source emission direction.

[0055] Exemplarily, the dynamic power output member is a manual lever 54 that is slidably connected to the housing 1 and is used to engage with the power input member 6 and drive the fixed-axis rotation of the power input member 6. The manual lever 54 is rotationally connected to the housing 1 about the light source emission direction. Furthermore, the manual lever 54 is provided with a connecting structure for engaging with the power input member 6 along the rotational direction of the power input member 6. During use, the manual lever 54 slidably engages with the power input member 6, and rotation of the manual lever 54 drives the fixed-axis rotation of the power input member 6, thereby driving the fixed-axis rotation of the axially sliding drive sleeve 31, thereby driving the lens holder 21 to move.

[0056] refer to Figure 5 and 6 In a preferred embodiment, the manual focus assembly 5 further includes a connecting base 51 slidably connected within the travel limit slot 13 and a manual focus sleeve 55 sleeved on the housing 1. The housing 1 sidewall is provided with a travel limit slot 13 arranged along the rotation path of the manual pressure rod 54 and used to provide a sliding path for the connecting base 51. The connecting base 51 is located within the travel limit slot 13. The manual focus sleeve 55 is used to cover the travel limit slot 13 and rotate synchronously with the connecting base 51. The dynamic power output member includes a pressing end extending outside the manual focus sleeve 55.

[0057] Specifically, the connecting base 51 is fixedly connected to the inner wall of the manual focusing sleeve 55, and the manual focusing sleeve 55 forms a retaining groove. A manual pressure rod 54 is slidably connected to the connecting base 51, and one end extends through the manual focusing sleeve 55 and out of the housing 1. The end of the manual pressure rod 54 that extends outside the manual focusing sleeve 55 serves as the pressing end. The power input member 6 is a gear ring coaxially fixedly connected to the axially sliding drive sleeve 31. The connecting structure on the manual pressure rod 54 is a latching tooth that mates with the gear ring.

[0058] During use, by pressing the manual lever 54, the teeth on the lever 54 engage with the gear ring. The manual focusing sleeve 55 is then rotated relative to the housing 1 about the laser emission direction. The teeth on the manual lever 54 drive the gear ring, which serves as the power input member 6, to rotate synchronously. This in turn drives the axial sliding drive sleeve 31, which is fixedly connected to the gear ring, to rotate relative to the housing 1 about the same axis, causing the lens assembly 2 to slide within the housing 1 along the laser emission direction, ultimately changing the laser focus and, consequently, the spot size. The operation process is manual, serving as a power source, and can be started or stopped at any time, making it highly resistant to human intervention. The spot change action can be executed by applying force, resulting in a fast response. The manual rotation speed is self-adjustable; the faster the hand speed, the faster the execution speed.

[0059] refer to Figure 5 and 6 A connecting tube 61 is coaxially fixedly connected to the gear ring. The connecting tube 61 is coaxially sleeved on the axial sliding drive sleeve 31 and bolted to the axial sliding drive sleeve 31. Since there are few places on the gear ring for setting up the connection structure, bolts are added to the connecting tube 61 to connect the gear ring to the axial sliding drive sleeve 31.

[0060] Continue to refer Figure 5 and Figure 6 The manual focusing assembly 5 further includes a return spring 52 fixedly connected to the connecting base 51 and used to drive the dynamic power output member to disengage from the power input member 6. Specifically, the return spring 52 includes a return spring fixedly connected to the connecting base 51 and used to drive the dynamic power output member to disengage from the power input member 6. Exemplarily, the return spring is sheathed on a manual pressure rod 54. The connecting base 51 defines a receiving cavity for accommodating the return spring. The two ends of the return spring are respectively fixedly connected to the manual pressure rod 54 and the connecting base 51.

[0061] During use, the manual pressure rod 54 is pressed against the power input member 6 in the housing 1, and after the two are engaged, the manual focusing sleeve 55 can be driven to rotate relative to the housing 1 with the laser emission direction as the axis, thereby rotating the axial sliding drive sleeve 31 and changing the spot size. The pressure applied to the manual pressure rod 54 is then removed, and the manual pressure rod 54 is reset under the elastic force of the reset spring, that is, the manual pressure rod 54 and the power input member 6 are disengaged. At this time, the manual focusing sleeve 55 is rotated. Since the manual pressure rod 54 is disengaged from the gear ring, the gear ring serving as the power input member 6 no longer rotates. This reduces the possibility of accidental contact with the manual pressure rod 54 or excessive movement of the manual pressure rod 54, which may cause the power input member 6 to rotate, thereby causing unexpected changes in the spot size. This improves working stability and has a high degree of anti-interference.

[0062] Continue to refer Figure 5 and Figure 6In a preferred embodiment, a limit plate 53 is fixedly connected to the manual pressure rod 54. The limit plate 53 is located in a cavity on the connecting seat 51 for accommodating the return spring and moves with the manual pressure rod 54. The two ends of the return spring are respectively fixedly connected to the limit plate 53 and the connecting seat 51. When the return spring is compressed, the end structure of the return spring gradually abuts the bottom surface of the limit plate 53. Compared with the method of directly fixing the return spring to the side wall of the manual pressure rod 54, connecting the return spring to the limit plate 53 can make the force on the end of the return spring more uniform, thereby extending the service life of the return spring.

[0063] Continue to refer Figure 5 and Figure 6 , a dust cover 56 for sealing the gap between the pressing end and the manual focusing sleeve 55 is fixedly connected to the manual focusing sleeve 55. Specifically: a recess is provided on the outer wall of the manual focusing sleeve 55, one end of the manual pressure rod 54 extends out of the housing 1 through the recess, the bottom end of the opening of the dust cover 56 is fixedly connected in the recess, the dust cover 56 is located at the end of the manual pressure rod 54 extending out of the housing 1 and covers this end of the manual pressure rod 54, and the dust cover 56 is provided with a deformable portion for pressing the dynamic power output part. Exemplarily, the dust cover 56 is made of rubber, and the deformable portion is thinner than other positions of the dust cover 56. The dust cover 56 can seal the assembly gap between the manual pressure rod 54 and the manual focusing sleeve 55, reducing the possibility of external dust entering through this place and adhering to the lens assembly 2.

[0064] Continue to refer Figure 6 The housing 1 is also fixedly connected to a sealing ring 14. Two sealing rings 14 are located on either side of the manual pressure rod 54. The sealing rings 14 are coaxially fixed to the housing 1 and located between the manual focusing sleeve 55 and the housing 1. The sealing rings 14 press against the housing 1 and the manual focusing sleeve 55, closing the assembly gap between the manual focusing sleeve 55 and the housing 1 caused by the rotational connection, thereby reducing the possibility of external dust entering the housing 1.

[0065] refer to Figure 5 and Figure 7 , Figure 7 The figure is a schematic diagram illustrating the structure of the electric focusing assembly 4 in an embodiment. The electric focusing assembly 4 is fixedly connected within the housing 1 and is configured to engage with the power input member 6 and drive the power input member 6 in fixed-axis rotation. The electric focusing assembly 4 includes a steady-state power source 41 fixedly connected within the housing 1 and a steady-state power output member 43 coaxially fixedly connected to the output end of the steady-state power source 41. The steady-state power output member 43 is constantly engaged with the power input member 6 in the direction of its rotation. The steady-state power source 41 provides power to drive the steady-state power output member 43, which in turn drives the power input member 6 in fixed-axis rotation, thereby achieving the purpose of moving the lens assembly 2.

[0066] An adjusting elastic member 44 is fixedly connected to the steady-state power source 41 for locking the steady-state power output member 43 on the output end of the steady-state power source 41, wherein the torque applied to the steady-state power output member 43 is m, the torque applied to the steady-state power output member 43 at the moment the power input member 6 is stuck is regarded as n, and 0-n is used as the preset torque range. The adjusting elastic member 44 is used to lock the steady-state power output member 43 on the output end of the steady-state power source 41 when m⊂preset torque range.

[0067] Exemplarily, the steady-state power source 41 includes a motor fixedly connected to the inner wall of the housing 1, a steady-state power output member 43 is a gear coaxially sleeved on the motor output shaft, an adjustment elastic member 44 is an adjustment spring coaxially sleeved on the motor output shaft, the two ends of the adjustment spring are respectively fixedly connected to the motor output shaft and the gear, a retaining ring 42 is coaxially fixedly connected to the motor output shaft, and the adjustment spring causes the gear to contact the retaining ring 42. The motor drives the gear to rotate, thereby driving the gear ring as the power input member 6 to rotate, and the gear ring drives the axial sliding drive sleeve 31 to rotate, ultimately realizing the movement of the lens assembly 2. During the entire process, the user only needs to start the motor and stop the motor when the expected size of the light spot is formed. The operation process is simple and easy to understand, and the operability is strong.

[0068] When in use, the spring will press the gear against the step of the motor output shaft. Due to the friction force f between the gear and the step of the motor, the gear can drive the gear ring to rotate while the gear ring can rotate normally; when the gear ring can no longer rotate in the current direction, the gear stops rotating. At this time, the torque output by the motor counteracts the aforementioned friction force f. The aforementioned friction force f comes from the thrust applied to the gear by the adjusting spring. Therefore, when the aforementioned friction force f is greater than the output torque of the motor, the output shaft of the motor will rotate on its own, and the gear will remain relatively stationary, reducing the possibility of the motor stalling and burning out.

[0069] In a preferred embodiment, an adjusting retaining ring 45 is movably connected to the output end of the motor, which is used to press against the adjusting spring and press the adjusting spring against the gear. Specifically, the movable retaining ring is threadedly connected to the output end of the motor, and the two ends of the spring are fixedly connected to the gear and the adjusting retaining ring 45 respectively. When the adjusting retaining ring 45 is threadedly connected to the output shaft of the motor, the spring presses the gear against the retaining ring 42. By rotating the adjusting retaining ring 45, the compression amount of the spring can be changed, that is, the friction between the gear and the retaining ring 42 caused by the pressure applied by the spring on the gear is changed, that is, the maximum torque that the gear can withstand when the gear drives the gear ring to rotate is changed. The above-mentioned preset torque range can be adjusted according to the actual working conditions. For example, different preset torque ranges can be selected when using different models of motors to reduce the possibility of the motor getting stuck and burning, thereby enhancing applicability.

[0070] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lens, comprising a housing (1), a lens assembly (2) and a focusing mechanism, characterized in that: The housing (1) is used for connecting to the light source and for supporting and fixing the focusing mechanism; The lens assembly (2) is fixedly connected to the housing (1) and is used to refract laser light emitted by the light source and then emit it outside the housing (1); the lens assembly (2) includes a lens seat (21) located inside the housing (1) and sliding relative to the housing (1) along the emission direction of the light source, and the lens seat (21) is used to support and fix the lens; The focusing mechanism comprises a zoom assembly (3) for fixing and supporting a lens assembly (2), a power input member (6), an electric focusing assembly (4), and a manual focusing assembly (5); The zoom assembly (3) comprises an axial sliding guide sleeve (32) and an axial sliding drive sleeve (31); the axial sliding guide sleeve (32) is fixedly connected to the housing (1) and is used to be sleeved on the lens seat (21) to impose circumferential limit on the lens seat (21); the axial sliding drive sleeve (31) is used to be sleeved on the lens assembly (2) and rotate relative to the housing (1) on a fixed axis and to drive the lens seat (21) to slide along the emission direction of the light source; the power input member (6) is used to be fixedly connected to the axial sliding drive sleeve (31) and to drive the axial sliding drive sleeve (31) to rotate on a fixed axis; The manual focusing assembly (5) includes a dynamic power output member movably connected to the housing (1) and used for engaging with the power input member (6), wherein the dynamic power output member is used for sliding to engage with the power input member (6) and driving the power input member (6) to rotate along a fixed axis; The electric focusing assembly (4) is fixedly connected in the housing (1) and is used for engaging with the power input member (6) and driving the power input member (6) to rotate on a fixed axis; The axial sliding guide sleeve (32) is formed with an axial sliding guide groove (321) arranged along the emission direction of the light source, and the axial sliding drive sleeve (31) is formed with an axial sliding drive groove (311) arranged at an angle to the axial sliding guide groove (321); a directional sliding limiting column (22) is fixedly connected to the lens seat (21) and is used for being simultaneously inserted into the axial sliding guide groove (321) and the axial sliding drive groove (311); The electric focusing assembly (4) comprises a steady-state power output member (43) for engaging with a power input member (6) and a steady-state power source (41) fixed in a housing (1) and used for driving the steady-state power output member (43); the torque applied to the steady-state power output member (43) is m, and the steady-state power source (41) is provided with an adjusting elastic member (44) for locking the steady-state power output member (43) to the output end of the steady-state power source (41) when m⊂ is within a preset torque range.

2. The lens according to claim 1, wherein: The manual focusing assembly (5) further comprises a resetting elastic member (52) fixedly connected to the interior of the housing (1) and used for driving the dynamic power output member to separate from the power input member (6).

3. The lens according to claim 2, wherein: The housing (1) is provided with a connecting seat (51) for supporting and fixing the dynamic power output member and rotating synchronously with the dynamic power output member on a fixed axis. The dynamic power output member is slidably connected to the connecting seat (51). The reset elastic member (52) includes a reset spring fixedly connected to the connecting seat (51) and used to drive the dynamic power output member to disengage from the power input member (6).

4. The lens according to claim 3, wherein: The housing (1) is provided with a travel limit groove (13) for providing a sliding path for the connecting seat (51); the housing (1) is provided with a manual focus sleeve (55) for covering the travel limit groove (13) and rotating synchronously with the connecting seat (51); and the dynamic power output member includes a pressing end extending outside the manual focus sleeve (55).

5. The lens according to claim 4, characterized in that: The manual focusing sleeve (55) is fixedly connected with a dust cover (56) for closing the gap between the pressing end and the manual focusing sleeve (55), and the dust cover (56) is provided with a deformable portion for pressing the dynamic power output part.

6. The lens according to any one of claims 1 to 5, characterized in that: The power input member (6) comprises a gear ring coaxially fixedly connected to the axial sliding drive sleeve (31), and the electric focusing assembly (4) comprises a motor fixedly connected to the housing (1) and a gear connected to the output shaft of the motor.

7. The lens according to claim 6, wherein: The adjusting elastic member (44) comprises an adjusting spring sleeved on the output shaft, and an adjusting retaining ring (45) is movably connected to the output shaft of the motor and is used to press the adjusting spring against the gear.

8. The lens according to claim 7, wherein: The dynamic power output component comprises a manual pressure rod (54) which is slidably connected to the housing (1) and is used for driving the gear ring to rotate on a fixed axis after being engaged with the gear ring.

Images