Focusing structure and lamp

Abstract

The utility model relates to the technical field of lamps, and discloses a focusing structure and a lamp. The light guide aluminum assembly is connected with the base; the lens is arranged at the other end of the light guide aluminum assembly; the transmission assembly is connected with the light guide aluminum assembly, the driving assembly is arranged on the base, and the transmission assembly is connected with the driving assembly; under driving of the driving assembly, the transmission assembly drives the light guide aluminum assembly to do telescopic motion between a first position and a second position relative to the base in the optical axis direction of the lens so that the lens can move relative to the base, and the distance between the lens and the base at the first position is larger than the distance between the lens and the base at the second position. Therefore, by adding the multi-stage light guide aluminum which can telescopically move relative to the base, the lens is driven to move relative to the base to adjust the focal length, the flexibility and the adjusting capability of the focusing structure are enhanced, and the arrangement of the light guide aluminum can reduce the loss of light and improve the utilization efficiency of light.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp technical field especially, it is a kind of focusing structure and lamp. BACKGROUND

[0002] In the design and application of modern lamps, precise beam control is the key to achieve high efficiency and high-quality light effect. Especially in the field of stage lighting, photography, etc., the demand for light source adjustment is increasing.

[0003] In the lamps currently used in stage and entertainment lighting, the lamps are required to have precise beam control and variable focal length for creating different visual effects and emphasizing specific parts of the stage.

[0004] Although the prior art has provided various solutions, such as multi-lens combination, electric focusing system, etc., for improving beam focusing and dispersion, there are still some limitations. For example, the existing zoom system often lacks in light efficiency transmission efficiency, mechanical complexity or cost-effectiveness. Traditional zoom system may have light loss during continuous zooming, affecting the imaging quality, and often not compact enough in mechanical design, affecting the overall stability and reliability of the system. SUMMARY

[0005] The utility model aims at providing a focusing structure and lamp, wherein the design of focusing structure is compact and reliable in overall operation, and the focusing structure can also reduce light loss during focusing of lamp and improve light utilization efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a focusing structure, which comprises:

[0007] a base;

[0008] a light guide aluminum assembly connected with the base;

[0009] a lens arranged at the other end of the light guide aluminum assembly;

[0010] a transmission assembly connected with the light guide aluminum assembly and a driving assembly arranged on the base, wherein the transmission assembly is connected with the driving assembly;

[0011] Under the driving of the driving assembly, the transmission assembly drives the light guide aluminum assembly to stretch and contract relative to the base along the optical axis direction of the lens between a first position and a second position, so that the lens moves relative to the base, and the distance between the lens and the base at the first position is greater than the distance between the lens and the base at the second position.

[0012] Further, the light guide aluminum assembly comprises a first light guide aluminum, a second light guide aluminum and a third light guide aluminum which are nested with each other, the first light guide aluminum is nested in the second light guide aluminum, the second light guide aluminum is nested in the third light guide aluminum, the first light guide aluminum is fixedly connected with the base, the third light guide aluminum is fixedly connected with the lens, the driving assembly is connected with the third light guide aluminum and the second light guide aluminum, the transmission assembly is connected with the third light guide aluminum and the second light guide aluminum, the driving assembly drives the third light guide aluminum to move relative to the second light guide aluminum, and the second light guide aluminum is driven to move relative to the first light guide aluminum through the transmission assembly.

[0013] Further, the focusing structure further comprises a positioning plate which is arranged opposite to the base, the transmission assembly comprises a plurality of first guide rods, one end of the first guide rod is connected with the positioning plate, and the other end of the first guide rod is connected with the base.

[0014] The transmission assembly further comprises a driving transmission member, a driven transmission member and a plurality of second guide rods which are arranged between the driving transmission member and the driven transmission member, the first guide rod is arranged through the driving transmission member and the driven transmission member, the driving transmission member is connected with the driving assembly and the third light guide aluminum, and the driven transmission member is connected with the second light guide aluminum.

[0015] Further, a plurality of first guide sleeves and a plurality of second guide sleeves are arranged on the driving transmission member and the driven transmission member, the first guide rod is arranged through the first guide sleeve, and the second guide rod is arranged through the second guide sleeve, when the light guide aluminum assembly is in the second position, the lower end of the first guide sleeve on the driving transmission member abuts against the upper surface of the driven transmission member, and the lower end of the second guide sleeve on the driving transmission member abuts against the upper surface of the driven transmission member.

[0016] Further, limit flanges are arranged at both ends of the second guide rod, when the light guide aluminum assembly is in the first position, the limit flanges at both ends of the second guide rod abut against the second guide sleeve on the driving transmission member and the second guide sleeve on the driven transmission member respectively, and the limit flange at the upper end of the second guide rod also abuts against the lower surface of the positioning plate, when the light guide aluminum assembly is in the second position, the limit flange at the lower end of the second guide rod abuts against the second guide sleeve on the driven transmission member.

[0017] Further, the focusing structure further comprises a lens pressing plate, a lens base plate, a lens mounting piece and a lens support column connected in sequence, the lens pressing plate is arranged above the lens base plate, the lens is arranged on the lens base plate, the lens base plate is arranged on the lens mounting piece, one end of the lens support column is connected with the lens mounting piece, and the other end is connected with the transmission assembly.

[0018] Further, the focusing structure further comprises a lens pressing plate, a lens base plate, a lens mounting piece and a lens support column connected in sequence, the lens pressing plate is arranged above the lens base plate, the lens pressing plate is arranged above the lens base plate, the lens base plate is arranged on the lens mounting piece, one end of the lens support column is connected with the lens mounting piece, and the other end is connected with the transmission assembly.

[0019] Further, the driving assembly comprises a lead screw motor, and the focusing structure further comprises a motor mounting piece, the motor mounting piece is fixed above the base through a motor mounting stud, and the lead screw motor is installed between the base and the motor mounting piece through a screw and a rubber washer.

[0020] Further, the motor mounting piece is provided with a limiting copper column, and when the light guide aluminum assembly is in the second position, the limiting copper column abuts against the driven transmission part.

[0021] The utility model also provides a lamp, the lamp comprises a light source and the light source is connected with the focusing structure of any one of the above-mentioned embodiments.

[0022] Compared with the prior art, the focusing structure has the beneficial effects that the light guide aluminum assembly is arranged to be relatively scalable and movable relative to the base, so that the lens is driven to move relative to the base to adjust the focal length, the flexibility and adjustment capacity of the focusing structure are enhanced, and the arrangement of the light guide aluminum in the light guide aluminum assembly can also reduce light loss and improve the utilization efficiency of light. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the three-dimensional structure schematic diagram of the focusing structure of the utility model embodiment;

[0024] Figure 2 is the cross section schematic diagram of the focusing structure of the utility model embodiment when being in the first position;

[0025] Figure 3 is the cross section schematic diagram of the focusing structure of the utility model embodiment when being in the second position.

[0026] In the drawings,

[0027] 100, focusing structure;

[0028] 10, base;

[0029] 20, lens; 21, lens pressing plate; 22, lens backing plate; 23, lens mounting; 24, lens support column;

[0030] 30, light guide aluminum assembly; 31, first stage light guide aluminum; 32, second stage light guide aluminum; 33, third stage light guide aluminum;

[0031] 40, transmission assembly; 41, first guide rod; 42, second guide rod; 421, limiting flange; 43, driving transmission member; 44, driven transmission member; 45, first guide sleeve; 46, second guide sleeve;

[0032] 50, driving assembly; 51, screw motor; 52, screw rod; 53, motor mounting; 531, limiting copper column; 54, motor mounting stud; 55, rubber washer;

[0033] 60, positioning plate;

[0034] 70, sanding sheet; 71, sanding sheet pressing plate; 72, sanding sheet mounting; 73, sanding sheet support column. DETAILED DESCRIPTION

[0035] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0036] In the description of the present application, it is to be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0038] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electric connection or can communicate with each other;It can be directly connected, also can be indirectly connected through intermediate medium, can be the communication or the interaction of two elements of two elements inside.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0039] In the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional features between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature is less than the second feature in horizontal height.

[0040] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described in the following. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0041] As Figure 1 shown, the utility model embodiment provides a focusing structure 100, focusing structure 100 includes base 10, with base 10 is connected and arranged light guide aluminum component 30, lens 20 is arranged in the other end of light guide aluminum component 30, drive assembly 50 is arranged on base 10 with the transmission assembly 40 of connecting light guide aluminum component 30, transmission assembly 40 is connected with drive assembly 50;

[0042] Wherein, under the drive of drive assembly 50, transmission assembly 40 drives light guide aluminum component 30 to stretch and contract along the optical axis direction of lens 20 between the first position and the second position relative to base 10, so that lens 20 moves relative to base 10, the distance between lens 20 and base 10 in the first position is greater than the distance between lens 20 and base 10 in the second position.

[0043] Thus, by setting the light guide aluminum assembly 30 capable of telescopic movement relative to the base 10 between the first position and the second position, the distance of the adjusting lens 20 relative to the base 10 is driven, so that dynamic focusing is realized, focusing is more flexible and free, and manual operation is not required. The setting of the light guide aluminum can reduce light loss in the focusing process and avoid affecting the imaging quality. The setting of the multi-stage light guide aluminum can also provide high-precision focal length adjustment to adapt to the needs in different scenes.

[0044] The utility model embodiment further provides a lamp (not shown in the figure), and the lamp comprises a light source and a focusing structure 100 provided in the utility model embodiment and connected with the light source.

[0045] Specifically, according to the background art, in the fields of stage lighting and photography, the demand for light source adjustment is increasing. In the current lamps used in stage and entertainment lighting, the lamps are required to have precise beam control and variable focal length for creating different visual effects and emphasizing specific parts of the stage.

[0046] The prior art such as multi-lens combination and electric focusing system is used to improve beam focusing and dispersion, but still has some limitations. For example, the existing variable focusing system often has deficiencies in light efficiency transmission efficiency, mechanical complexity or cost effectiveness. The traditional variable focusing system may have light loss in the continuous variable focusing process, affecting the imaging quality, and often has a problem of insufficient compactness in mechanical design, affecting the overall stability and reliability of the system.

[0047] The focusing structure 100 in the application comprises a base 10, and the base 10 is a fixed base, so that the parts of the entire focusing structure 100 can be mounted on the base 10, the cumulative tolerance is minimized, and reliable support is provided for the high concentricity and stability of the movement of the lens 20, the light guide aluminum assembly 30, the transmission assembly 40 and the driving assembly 50.

[0048] Further, the light guide aluminum assembly 30 is designed to be driven by the transmission assembly 40 to be telescopic relative to the base 10 along the optical axis direction of the lens 20 between the first position and the second position, so that the overall structure is more compact.

[0049] It should be noted that in the present application, the first position refers to the position where the light guide aluminum assembly 30 is fully extended, and the second position refers to the position where the light guide aluminum assembly 30 is fully retracted, that is, the distance between the lens 20 and the base 10 is maximum in the first position, and the zoom ratio is maximum at this time, and the distance between the lens 20 and the base 10 is minimum in the second position, and the zoom ratio is minimum.

[0050] It can be understood that the light guide aluminum is an aluminum material with special optical properties, mainly used for guiding and distributing light. It can make light effectively propagate and reflect inside the material through surface treatment or design structure, and finally transmit the light signal to the designated position or diffuse to the specific area.

[0051] The lamp in the present application can be an LED lamp or other lamps. Taking the LED lamp as an example, the light guide aluminum can be used to optimize the distribution of light, make the light more uniform, reduce the waste of light, and improve the lighting effect.

[0052] The light guide aluminum assembly 30 provided in the present application can include a plurality of light guide aluminum nested and matched, so that the regulation and focal length adjustment of light are realized through the mutual nesting and matching of the plurality of light guide aluminum. The light guide aluminum assembly 30 is connected with the base 10 and the lens 20, and is connected with the driving assembly 50 and the transmission assembly 40, so that it can be driven to extend and retract, thereby driving the connected lens 20 to move.

[0053] The driving assembly 50 can include a plurality of lead screw motors 51. For example, the number of lead screw motors 51 is two, and the two lead screw motors 51 are symmetrically arranged on the base 10, which can better ensure the flatness and concentricity of the focusing structure 100 during operation, so that the focusing structure 100 is more stable and reliable during operation.

[0054] As shown in Figures 1-3 In some embodiments, the light guide aluminum assembly 30 can include a first level light guide aluminum 31, a second level light guide aluminum 32 and a third level light guide aluminum 33 nested with each other.

[0055] The first level light guide aluminum 31 is embedded in the second level light guide aluminum 32, and the second level light guide aluminum 32 is embedded in the third level light guide aluminum 33.

[0056] The first level light guide aluminum 31 is fixedly connected with the base 10, the third level light guide aluminum 33 is fixedly connected with the lens 20, the driving assembly 50 is connected with the third level light guide aluminum 33 and the second level light guide aluminum 32, and the transmission assembly 40 is connected with the third level light guide aluminum 33 and the second level light guide aluminum 32.

[0057] The driving assembly 50 drives the third level light guide aluminum 33 to move relative to the second level light guide aluminum 32, and drives the second level light guide aluminum 32 to move relative to the first level light guide aluminum 31 through the transmission assembly 40.

[0058] In this way, the regulation and focal length adjustment of light are realized through the mutual nesting and matching of the plurality of light guide aluminum, the loss of light is reduced, and the effective light passing through the lens 20 is increased.

[0059] Specifically, the light guide aluminum assembly 30 in the embodiment adopts a three-stage light guide aluminum structure, wherein the outermost light guide aluminum is the third-stage light guide aluminum 33, which is fixedly connected with the lens 20, and can be responsible for the main light guide path to guide the initial light source into the focusing structure 100. The third-stage light guide aluminum 33 is designed to have a larger diameter to receive a larger range of light.

[0060] The inner light guide aluminum is the second-stage light guide aluminum 32 and the first-stage light guide aluminum 31, respectively. The diameter of the second-stage light guide aluminum 32 is smaller than that of the third-stage light guide aluminum 33 and larger than that of the first-stage light guide aluminum 31, so as to ensure the nesting effect of the three-stage light guide aluminum at the second position. The light beam is further adjusted, focused or dispersed in the second-stage light guide aluminum 32 and the first-stage light guide aluminum 31. The design of the three-stage light guide aluminum structure can be adjusted by the position change of the multi-stage light guide aluminum to adjust the focal length.

[0061] The first-stage light guide aluminum 31 is fixedly connected with the base 10, and the second-stage light guide aluminum 32 is connected with the first-stage light guide aluminum 31 and the third-stage light guide aluminum 33 through the transmission assembly 40.

[0062] The driving assembly 50 is connected with the third-stage light guide aluminum 33 and the second-stage light guide aluminum 32, and the transmission assembly 40 is connected with the third-stage light guide aluminum 33 and the second-stage light guide aluminum 32.

[0063] Therefore, when the driving assembly 50 drives the third-stage light guide aluminum 33 to move relative to the second-stage light guide aluminum 32, the second-stage light guide aluminum 32 can be driven to move relative to the first-stage light guide aluminum 31 through the transmission assembly 40, so as to realize the telescopic movement of the light guide aluminum assembly 30 relative to the base 10. It can be understood that the three light guide aluminums are farthest apart at the first position, and are nested with each other at the second position, with the highest coincidence degree.

[0064] As shown in FIG. 1, Figures 1-3 In some embodiments, the focusing structure 100 can further include a positioning plate 60, which is arranged opposite to the base 10. The transmission assembly 40 can include a plurality of first guide rods 41, one end of each of the first guide rods 41 being connected with the positioning plate 60, and the other end of each of the first guide rods 41 being connected with the base 10.

[0065] The transmission assembly 40 can further include a driving transmission member 43, a driven transmission member 44 and a plurality of second guide rods 42 penetrating between the driving transmission member 43 and the driven transmission member 44. The first guide rods 41 penetrate the driving transmission member 43 and the driven transmission member 44. The driving transmission member 43 is connected with the driving assembly 50 and the third-stage light guide aluminum, and the driven transmission member 44 is connected with the second-stage light guide aluminum.

[0066] Therefore, by setting the positioning plate 60 and the base 10 in cooperation, the concentricity and reliability of the overall structure are ensured. By setting the plurality of first guide rods 41, the telescopic movement of the light guide aluminum assembly 30 relative to the base 10 can be guided. By setting the driving member 43, the driven member 44, and the plurality of second guide rods 42 penetrating between the driving member 43 and the driven member 44, the driving member 43 can drive the third light guide aluminum 33 to move, and then the driven member 44 can drive the second light guide aluminum 32 to move.

[0067] Specifically, the positioning plate 60 can be a U-shaped sheet metal part, and a plurality of mounting holes are arranged on the positioning plate 60 for mounting the first guide rods 41 between the positioning plate 60 and the base 10. The first guide rods 41 can be two groups, and each group can have two first guide rods 41. The two groups of first guide rods 41 are uniformly and symmetrically arranged on both sides of the light guide aluminum assembly 30. The first guide rods 41 penetrate the driving member 43 and the driven member 44, thereby guiding the movement of the driving member 43 and the driven member 44.

[0068] The driving member 43 can have a convex shape, the driven member 44 can have a concave shape, and the second guide rods 42 can be two groups, each group having two second guide rods 42. The second guide rods 42 penetrate between the driving member 43 and the driven member 44.

[0069] The driving member 43 is connected with the driving assembly 50 and the third light guide aluminum 33. The driving member 43 is provided with an assembly hole, and the size of the assembly hole matches the diameter of the middle section of the third light guide aluminum, so that the third light guide aluminum 33 and the driving member 43 can be connected and mounted.

[0070] The driven member 44 is also provided with an assembly hole, and the size of the assembly hole matches the diameter of the middle section of the second light guide aluminum, so that the second light guide aluminum 32 and the driven member 44 can be connected and mounted.

[0071] The driving member 43 can also be provided with a mounting hole for mounting the driving assembly 50, such as the lead screw 52 of the lead screw motor 51, so that the driving assembly 50 and the driving member 43 are connected.

[0072] In this way, when the light guide aluminum assembly 30 is in the first position and moves towards the second position under the driving of the driving assembly 50, the driving member 43 is driven by the driving assembly 50 to drive the third light guide aluminum 33 to move along the first guide rod 41 towards the base 10. During the movement, the third light guide aluminum 33 gradually coincides with the second light guide aluminum 32. The second guide rod 42 is driven by the driving member 43 to move downwardly through the driven member 44. The upper end of the second guide rod 42 abuts against the driving member 43, and the lower end penetrates the driven member 44.

[0073] Until the driving transmission member 43 collides with the driven transmission member 44, the driven transmission member 44 is driven by the driving transmission member 43 to move downward along the first guide rod 41 towards the base 10, and in turn drives the second-stage light guide aluminum 32 to move towards the base 10, until it moves to the second position, realizing the coincidence of the three light guide aluminums. Finally, the contraction movement of the light guide aluminum assembly 30 is realized. It should be noted that at the second position, the lower end of the second guide rod 42 abuts against the driven transmission member 44, and the upper end of the second guide rod 42 passes through the driving transmission member 43.

[0074] When the light guide aluminum assembly 30 is in the second position and moves towards the first position under the driving of the driving assembly 50, the driving transmission member 43 is driven by the driving assembly 50 to drive the third-stage light guide aluminum 33 to move along the first guide rod 41 towards the positioning plate 60. During the movement, when the driving transmission member 43 hits the upper end of the second guide rod 42, the upper end of the second guide rod 42 abuts against the driving transmission member 43, so that the upward movement of the driving transmission member 43 driven by the driving assembly 50 is transmitted to the driven transmission member 44 under the driving of the second guide rod 42, and in turn drives the second-stage light guide aluminum 32 to move upward, until the upper end of the second guide rod 42 abuts against the positioning plate 60, and finally realizes the extension movement of the light guide aluminum assembly 30.

[0075] As shown in Figures 1-3 some embodiments, a plurality of first guide sleeves 45 and a plurality of second guide sleeves 46 are arranged on the driving transmission member 43 and the driven transmission member 44, the first guide rod 41 passes through the first guide sleeve 45, and the second guide rod 42 passes through the second guide sleeve 46. When the light guide aluminum assembly 30 is in the second position, the lower end of the first guide sleeve 45 on the driving transmission member 43 abuts against the upper surface of the driven transmission member 44, and the lower end of the second guide sleeve 46 on the driving transmission member 43 abuts against the upper surface of the driven transmission member 44.

[0076] In this way, the first guide rod 41 and the second guide rod 42 can be limited in movement position by the first guide sleeve 45 and the second guide sleeve 46 respectively, enhancing the stability and reliability of the first guide rod 41 and the second guide rod 42 when conducting movement, that is, the guide sleeves can provide a stable and accurate guide path for the guide rods.

[0077] Specifically, the driving transmission member 43 and the driven transmission member 44 are respectively provided with corresponding first guide sleeves 45 and second guide sleeves 46 at the positions where the first guide rod 41 and the second guide rod 42 pass through.

[0078] Among them, the first guide sleeve 45 and the second guide sleeve 46 on the driving transmission member 43 are arranged on the driving transmission member 43, and the first guide sleeve 45 and the second guide sleeve 46 can be integrally formed with the driving transmission member 43.

[0079] The first guide sleeve 45 and the second guide sleeve 46 on the driven transmission member 44 are disposed on the lower surface of the driven transmission member 44, that is, the surface close to the base 10. The first guide sleeve 45 and the second guide sleeve 46 can be integrally formed with the driven transmission member 44.

[0080] The second guide rod 42 can slide freely up and down through the upper and lower second guide sleeves 46, but its position is restricted by the two second guide sleeves 46. The second guide sleeves 46 can provide a stable and precise guide path for the second guide rod 42.

[0081] When the light guide aluminum assembly 30 is in the second position, the overlap of the three light guide aluminum components is the highest. At this time, according to the above motion analysis, after the active transmission component 43 collides with the driven transmission component 44, it drives the driven transmission component 44 to descend along the first guide rod 41. That is, the lower end of the first guide sleeve 45 on the active transmission component 43 will abut against the upper surface of the driven transmission component 44, and the lower end of the second guide sleeve 46 on the active transmission component 43 will also abut against the upper surface of the driven transmission component 44, thereby transmitting the force to drive the driven transmission component 44 to descend.

[0082] When the movement reaches the second position, the lower end of the first guide sleeve 45 on the active transmission member 43 abuts against the upper surface of the driven transmission member 44, and the lower end of the second guide sleeve 46 on the active transmission member 43 abuts against the upper surface of the driven transmission member 44.

[0083] like Figures 1-3 As shown, in some embodiments, the two ends of the second guide rod 42 are provided with limiting flanges 421. When the light guide aluminum assembly 30 is in the first position, the limiting flanges 421 at both ends of the second guide rod 42 abut against the second guide sleeve 46 on the active transmission member 43 and the second guide sleeve 46 on the driven transmission member 44, respectively. The limiting flange 421 at the upper end of the second guide rod 42 also abuts against the lower surface of the positioning plate 60. When the light guide aluminum assembly 30 is in the second position, the limiting flange 421 at the lower end of the second guide rod 42 abuts against the second guide sleeve 46 on the driven transmission member 44.

[0084] Thus, by setting the limiting flange 421, the second guide rod 42 can be prevented from completely dislodging from the second guide sleeve 46, and the second guide rod 42 can be better positioned between the driving transmission component 43 and the driven transmission component 44, ensuring the reliability of the structure. At the same time, further limiting the movement of the second guide rod 42 can also serve as a limit for the movement stroke of the overall structure.

[0085] Specifically, the limiting flange 421 can be integrally formed with the second guide rod 42, or it can be detachably installed at both ends of the second guide rod 42. The diameter of the limiting flange 421 is at least not less than the diameter of the second guide sleeve 46, thereby limiting the movement of the second guide rod 42 between the two guide sleeves.

[0086] When the light guide aluminum assembly 30 is in the first position and moves towards the second position under the drive of the drive assembly 50, the active transmission component 43 is driven by the drive assembly 50 to move the third-level light guide aluminum 33 along the first guide rod 41 toward the base 10. During the movement, the third-level light guide aluminum 33 gradually overlaps with the second-level light guide aluminum 32. The second guide rod 42 is driven by the active transmission component 43 to move downward through the driven transmission component 44. The limiting flange 421 at the upper end of the second guide rod 42 abuts against the second guide sleeve 46 on the active transmission component 43, and the lower end of the second guide rod 42 passes through the driven transmission component 44.

[0087] Until the active transmission component 43 collides with the driven transmission component 44, the driven transmission component 44, under the action of the active transmission component 43, moves downward along the first guide rod 41 toward the base 10, thereby moving the second-stage light guide aluminum 32 toward the base 10, until it reaches the second position, achieving the overlap of the three light guide aluminum components. This ultimately achieves the retraction movement of the light guide aluminum assembly 30. It should be noted that in the second position, the limiting flange 421 at the lower end of the second guide rod 42 abuts against the second guide sleeve 46 on the driven transmission component 44, and the upper end of the second guide rod 42 passes through the active transmission component 43.

[0088] When the light guide aluminum assembly 30 is in the second position and moves towards the first position under the drive of the drive assembly 50, the active transmission component 43 is driven by the drive assembly 50 to move the third-stage light guide aluminum 33 along the first guide rod 41 toward the positioning plate 60. During the movement, when the active transmission component 43 hits the upper end of the second guide rod 42, the limiting flange 421 at the upper end of the second guide rod 42 abuts against the second guide sleeve 46 of the active transmission component 43. Thus, under the drive of the second guide rod 42, the upward movement of the active transmission component 43 driven by the drive assembly 50 is transmitted to the driven transmission component 44, thereby driving the second-stage light guide aluminum 32 to move upward until the limiting flange 421 at the upper end of the second guide rod 42 abuts against the positioning plate 60, and the limiting flange 421 at the lower end of the second guide rod 42 also abuts against the second guide sleeve 46 of the driven transmission component 44, finally realizing the extension movement of the light guide aluminum assembly 30.

[0089] like Figures 1-3 As shown, in some embodiments, the focusing structure 100 further includes a lens pressure plate 21, a lens pad 22, a lens mounting member 23, and a lens support column 24 connected in sequence. The lens pressure plate 21 is disposed above the lens pad 22, the lens 20 is disposed on the lens pad 22, the lens pad 22 is disposed on the lens mounting member 23, and one end of the lens support column 24 is connected to the lens mounting member 23, and the other end is connected to the transmission assembly 40.

[0090] This ensures the fixation, alignment, and stability of lens 20.

[0091] Specifically, the main function of the lens clamping plate 21 is to keep the lens 20 stable in its installation position and prevent the lens 20 from moving or falling off during operation. The lens clamping plate 21 is usually located on the outermost side of the lens 20 and is in direct contact with the lens 20. It is used to firmly press the lens 20 onto the lens pad 22 and the lens mounting component 23.

[0092] Lens pad 22 serves to provide cushioning between lens 20 and its mounting structure, protecting lens 20 from damage caused by direct hard contact and helping to better distribute pressure to prevent lens 20 from breaking. Lens pad 22 is typically located between lens 20 and lens mount 23, acting as a buffer layer to aid in the precise positioning of lens 20 and reduce mechanical stress.

[0093] Lens mount 23 provides the necessary mechanical support for lens 20 and ensures it is in the correct optical path. Lens mount 23 is designed to accommodate lens 20 and works in conjunction with lens pad 22 and lens clamping plate 21. Lens mount 23 may have specific slots or shapes to ensure secure mounting of lens pad 22 and lens 20.

[0094] The lens support column 24 can be a copper column, used to support the assembly that mounts the entire lens 20. The copper support column of the lens 20 is usually fixedly connected to the lens mounting member 23 and passes through the lens mounting member 23. The other end is connected to the transmission assembly 40, so that the transmission assembly 40 and the light guide aluminum assembly 30 drive the focusing lens 20 to adjust the distance relative to the base 10, thereby achieving focusing.

[0095] like Figures 1-3 As shown, in some embodiments, the focusing structure 100 further includes a frosted sheet 70, a frosted sheet pressure plate 71, a frosted sheet mounting member 72, and a frosted sheet support column 73. The frosted sheet 70 is disposed between the frosted sheet mounting member 72 and the frosted sheet pressure plate 71, with the frosted sheet pressure plate 71 located above the frosted sheet. One end of the frosted sheet support column 73 is connected to the frosted sheet mounting member 72, and the other end is connected to the lens mounting member 23.

[0096] This ensures that the frosted disc 70 can effectively scatter light while maintaining its fixed position in the luminaire, avoiding changes in optical performance due to vibration or movement.

[0097] Specifically, the frosted glass 70 is used to diffuse the light focused by the lens 20, reducing light spots and providing a uniform illumination effect. The frosted glass 70 is typically made of a light-transmitting material with a frosted surface treatment to achieve the light-diffusing effect.

[0098] The function of the abrasive disc pressure plate 71 is to fix the abrasive disc 70 in the proper position to ensure that it will not move or fall off during operation. The abrasive disc pressure plate 71 usually covers the abrasive disc 70 and is fixed to the abrasive disc mounting piece 72 by screws or other mechanical fasteners.

[0099] The abrasive disc mount 72 is a structure that secures the entire abrasive disc, providing the necessary mechanical support for the abrasive disc 70 and the abrasive disc pressure plate 71. The mount is designed with slots or frames to facilitate the installation and positioning of the abrasive disc 70 and the abrasive disc pressure plate 71.

[0100] The frosted disc support column 73 can be a copper column, used to support the frosted disc mounting component 72 and keep it stable. One end of the frosted disc support column 73 is connected to the frosted disc mounting component 72, and the other end is connected to the lens mounting component 23, so that it can be moved by the lens 20.

[0101] like Figures 1-3 As shown, in some embodiments, the drive assembly 50 includes a lead screw motor 51, and the focusing structure 100 also includes a motor mounting component 53. The motor mounting component 53 is fixed above the base 10 by a motor mounting stud 54, and the lead screw motor 51 is mounted between the base 10 and the motor mounting component 53 by screws and rubber washers 55.

[0102] Specifically, there can be two lead screw motors 51, which are symmetrically arranged on both sides of the light guide aluminum assembly 30. In this way, the double-sided motor drive can better ensure the flatness and concentricity of the assembly during operation, and make the focusing structure 100 more stable and reliable during operation.

[0103] The lead screw motor 51 is installed using screws and rubber washers 55, which reduces the vibration of the lead screw motor 51 during operation and ensures the stable and good operation of the entire high-precision focusing structure 100.

[0104] like Figures 1-3 As shown, in some embodiments, a limiting copper post 531 is provided on the motor mounting component 53, and when the light guide aluminum assembly 30 is in the second position, the limiting copper post 531 abuts against the driven transmission component 44.

[0105] In this way, the second position of the focusing structure 100 can be limited to avoid excessive movement.

[0106] Specifically, when the light guide aluminum assembly 30 is in the first position and moves towards the second position under the drive of the lead screw motor 51, the rotational motion of the lead screw 52 is converted into a linear motion in which the active transmission component 43 drives the third-level light guide aluminum 33 to move along the first guide rod 41 toward the base 10. During the movement, the third-level light guide aluminum 33 gradually overlaps with the second-level light guide aluminum 32. The second guide rod 42 is driven by the active transmission component 43 to move downward through the driven transmission component 44. The limiting flange 421 at the upper end of the second guide rod 42 abuts against the second guide sleeve 46 on the active transmission component 43, and the lower end of the second guide rod 42 passes through the driven transmission component 44.

[0107] Until the driving transmission member 43 collides with the driven transmission member 44, under the action of the driving transmission member 43, the driven transmission member 44 is driven to move downward along the first guide rod 41 towards the base 10, and then the second stage light guide aluminum 32 is driven to move towards the base 10, until the lower surface of the driven transmission member 44 abuts against the limiting copper column 531, and finally reaches the second position, realizes the coincidence of the three light guide aluminums, and realizes the contraction movement of the light guide aluminum assembly 30.

[0108] The working process of the utility model is:

[0109] When the light guide aluminum assembly 30 is in the first position and moves towards the second position under the driving of the screw rod motor 51, the rotary movement of the screw rod 52 is converted into the linear movement of the driving transmission member 43 driving the third stage light guide aluminum 33 to move along the first guide rod 41 towards the base 10, and in the moving process, the third stage light guide aluminum 33 gradually coincides with the second stage light guide aluminum 32, the second guide rod 42 is driven by the driving transmission member 43 to move downward through the driven transmission member 44, the limiting flange 421 at the upper end of the second guide rod 42 abuts against the second guide sleeve 46 on the driving transmission member 43, and the lower end of the second guide rod 42 passes through the driven transmission member 44.

[0110] Until the driving transmission member 43 collides with the driven transmission member 44, under the action of the driving transmission member 43, the driven transmission member 44 is driven to move downward along the first guide rod 41 towards the base 10, and then the second stage light guide aluminum 32 is driven to move towards the base 10, until the lower surface of the driven transmission member 44 abuts against the limiting copper column 531, and finally reaches the second position, realizes the coincidence of the three light guide aluminums, and realizes the contraction movement of the light guide aluminum assembly 30.

[0111] When the light guide aluminum assembly 30 is in the second position and moves towards the first position under the driving of the lead screw motor 51, the driving part 43 drives the third light guide aluminum 33 to move along the first guide rod 41 towards the positioning plate 60, and when the driving part 43 hits the upper end of the second guide rod 42, the limiting flange 421 at the upper end of the second guide rod 42 abuts against the second guide sleeve 46 of the driving part 43, so that the driving part 43 is driven to move upwards by the driven assembly 50, and the movement is transmitted to the driven part 44, thereby driving the second light guide aluminum 32 to move upwards, until the limiting flange 421 at the upper end of the second guide rod 42 abuts against the positioning plate 60, and the limiting flange 421 at the lower end of the second guide rod 42 also abuts against the second guide sleeve 46 of the driven part 44, so that the extension movement of the light guide aluminum assembly 30 is finally realized.

[0112] In conclusion, the embodiment of the utility model provides a focusing structure 100 and lamp, it is through setting up the light guide aluminum assembly 30 that can be relative base 10 in the first position and the second position telescopic motion, to drive the distance of adjusting lens 20 relative base 10, to realize dynamic focusing, and focusing is more flexible and free, need not manual operation, the setting of light guide aluminum assembly 30 can reduce the light loss in the focusing process and avoid affecting the imaging quality, the setting of multistage light guide aluminum can also provide the focal length adjustment of high precision, adapts to the demand under different scenes.

[0113] The above only is the preferred implementation mode of the utility model, it should be pointed out that, for ordinary technical personnel in this technical field, under the premise of not departing from the technical principle of the utility model, can also make a number of improvements and replacement, these improvements and replacement also should be considered the protection range of the utility model.

Claims

1. A focusing structure, characterized in that, The focusing structure includes: Base; A light guide aluminum assembly is connected to the base; A lens is disposed at the other end of the light guide aluminum assembly; A transmission component connected to the light guide aluminum assembly and a drive component disposed on the base, wherein the transmission component is connected to the drive component; Under the drive of the drive component, the transmission component causes the light guide aluminum component to extend and retract relative to the base along the optical axis of the lens between a first position and a second position, so that the lens moves relative to the base. The distance between the lens and the base in the first position is greater than the distance between the lens and the base in the second position.

2. The focusing structure according to claim 1, characterized in that, The light guide aluminum assembly includes a first-level light guide aluminum, a second-level light guide aluminum, and a third-level light guide aluminum nested within each other. The first-level light guide aluminum is embedded within the second-level light guide aluminum, and the second-level light guide aluminum is embedded within the third-level light guide aluminum. The first-level light guide aluminum is fixedly connected to the base, and the third-level light guide aluminum is fixedly connected to the lens. The driving component is connected to the third-level light guide aluminum and the second-level light guide aluminum, and the transmission component is connected to the third-level light guide aluminum and the second-level light guide aluminum. The driving component drives the third-level light guide aluminum to move relative to the second-level light guide aluminum, and the transmission component drives the second-level light guide aluminum to move relative to the first-level light guide aluminum.

3. The focusing structure according to claim 2, characterized in that, The focusing structure also includes a positioning plate, which is disposed opposite to the base. The transmission assembly includes multiple sets of first guide rods, one end of which is connected to the positioning plate and the other end of which is connected to the base. The transmission assembly further includes an active transmission component, a driven transmission component, and multiple sets of second guide rods passing between the active transmission component and the driven transmission component. The first guide rod passes through the active transmission component and the driven transmission component. The active transmission component is connected to the drive assembly and the third-level light guide aluminum, and the driven transmission component is connected to the second-level light guide aluminum.

4. The focusing structure according to claim 3, characterized in that, The active transmission component and the driven transmission component are provided with multiple sets of first guide sleeves and multiple sets of second guide sleeves. The first guide rod passes through the first guide sleeve, and the second guide rod passes through the second guide sleeve. When the light guide aluminum assembly is in the second position, the lower end of the first guide sleeve on the active transmission component abuts against the upper surface of the driven transmission component, and the lower end of the second guide sleeve on the active transmission component abuts against the upper surface of the driven transmission component.

5. The focusing structure according to claim 4, characterized in that, The second guide rod has limiting flanges at both ends. When the light guide aluminum assembly is in the first position, the limiting flanges at both ends of the second guide rod abut against the second guide sleeve on the active transmission component and the second guide sleeve on the driven transmission component, respectively. The limiting flange at the upper end of the second guide rod also abuts against the lower surface of the positioning plate. When the light guide aluminum assembly is in the second position, the limiting flange at the lower end of the second guide rod abuts against the second guide sleeve on the driven transmission component.

6. The focusing structure according to claim 1, characterized in that, The focusing structure further includes a lens pressure plate, a lens pad, a lens mounting component, and a lens support column connected in sequence. The lens pressure plate is disposed above the lens pad, the lens is disposed on the lens pad, the lens pad is disposed on the lens mounting component, and one end of the lens support column is connected to the lens mounting component, while the other end is connected to the transmission assembly.

7. The focusing structure according to claim 6, characterized in that, The focusing structure also includes a frosted sheet, a frosted sheet pressure plate, a frosted sheet mounting component, and a frosted sheet support column. The frosted sheet is disposed between the frosted sheet mounting component and the frosted sheet pressure plate. The frosted sheet pressure plate is located above the frosted sheet. One end of the frosted sheet support column is connected to the frosted sheet mounting component, and the other end is connected to the lens mounting component.

8. The focusing structure according to claim 3, characterized in that, The drive assembly includes a lead screw motor, and the focusing structure also includes a motor mounting component. The motor mounting component is fixed above the base by motor mounting studs, and the lead screw motor is installed between the base and the motor mounting component by screws and rubber washers.

9. The focusing structure according to claim 8, characterized in that, The motor mounting component is provided with a limiting copper post, which abuts against the driven transmission component when the light guide aluminum assembly is in the second position.

10. A lamp, characterized in that, The luminaire includes a light source and a focusing structure as described in any one of claims 1-9 connected to the light source.

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