Lens group distance adjusting structure

Abstract

The utility model relates to the technical field of lenses, and specifically discloses a lens group distance adjusting structure. Comprising a first lens cone, a second lens cone and a third lens cone, the surfaces of the two ends of the first lens cone are respectively provided with a first thread and a second thread. The second lens cone and the third lens cone are installed on the first lens cone based on the first thread and the second thread, and the second lens cone and the third lens cone can move on the first lens cone along the optical axis direction based on the first thread and the second thread respectively; wherein the first lens cone, the second lens cone and the third lens cone are hollow and are internally provided with spaces for accommodating lenses; and lens groups or lenses are arranged in the first lens cone, the second lens cone and the third lens cone along the optical axis direction. The second lens cone and the third lens cone can independently move on the first lens cone based on the first thread and the second thread respectively, so that the focusing function and the rotary focusing function can be performed simultaneously or respectively, and the flexibility and the applicability of the lens are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical field of lens, especially a lens group distance adjusting structure. BACKGROUND

[0002] In traditional optical systems, the adjustment between lenses or lens groups is usually achieved through multiple components, which can include mechanical structures, gears, sliding rails, or electric control systems. Although these adjustment methods can achieve precise adjustment of lens positions to some extent, the structure is complex, the precision is difficult to guarantee, and the manufacturing and debugging costs are high. In addition, the complex adjustment structure may cause inconvenience or inflexibility in use, especially in situations that require frequent adjustment, such as in cameras, microscopes, telescopes, and other devices. The current adjustment structure often needs to use multiple manual or electric control devices to adjust the position of the lens, especially when adjusting the distance between lenses or changing the focal length, often requiring tedious operations. Some devices may also need to finely adjust multiple control devices, which not only increases the difficulty of operation, but also makes the entire optical system adjustment process lengthy and tedious.

[0003] In the patent "lens assembly, lens and image pickup device" (authorized announcement number CN222365120U, hereinafter referred to as prior art 1), a lens assembly is disclosed, which is carefully designed and ingeniously disposed between the second lens barrel and the first lens barrel. A rolling module is disposed between the second lens barrel and the first lens barrel. This innovative structure enables the connecting member to move reciprocally along the optical axis direction when the fourth lens barrel rotates. This reciprocating movement further enables the second lens barrel to move precisely along the optical axis direction. To further optimize performance and reduce friction between the fixed lens barrel, the designer also adds a second rolling module between the third lens barrel and the fourth lens barrel to ensure smooth operation of the entire system.

[0004] However, this lens assembly may face a common problem of wear and tear of the rolling module after long-term use and repeated operation. Over time, the rolling module may gradually wear out, which will cause an increase in rolling resistance. This increased resistance will directly affect the movement precision and smoothness of the lens assembly, which may adversely affect the shooting effect. In addition, due to the introduction of the rolling module, the overall structure of the lens assembly becomes more complex, making manufacturing and operation more difficult. SUMMARY

[0005] Therefore, the lens group distance adjusting structure is provided to solve the problem of complex lens adjusting structure and inconvenient operation in the prior art.

[0006] The utility model discloses an embodiment provides a mirror group distance adjusting structure, including first mirror barrel and the second mirror barrel and third mirror barrel of setting respectively in the both ends of first mirror barrel, the surface of both ends of first mirror barrel is equipped with first screw thread and second screw thread respectively, the second mirror barrel and third mirror barrel are installed on first mirror barrel based on first screw thread and second screw thread, and the second mirror barrel and third mirror barrel can move along the optical axis direction on first mirror barrel based on first screw thread and second screw respectively, wherein, first mirror barrel, second mirror barrel and third mirror barrel all are hollowly arranged, and the inside is equipped with the space of accommodating lens, and first mirror barrel, second mirror barrel and third mirror barrel all are equipped with mirror group or lens along the optical axis direction in.

[0007] Preferably, the outer part of the second lens barrel and the third lens barrel is respectively connected with a first focusing ring and a second focusing ring; by screwing the first focusing ring and the second focusing ring, the second lens barrel and the third lens barrel can produce relative movement based on the first lens barrel.

[0008] Preferably, when the second lens barrel and the first lens barrel produce relative movement, the mirror group or the lens in the second lens barrel moves as a whole to realize the focusing function.

[0009] Preferably, when the third lens barrel and the first lens barrel produce relative movement, the lens in the third lens barrel moves close to or away from other mirror groups or lenses.

[0010] Preferably, the first focusing ring and the second focusing ring are provided with a plurality of gear teeth that are uniformly spaced and used for manual rotation by a user.

[0011] Preferably, the first lens barrel, the second lens barrel, and the third lens barrel are provided with a spacer between the lenses or mirror groups installed therein.

[0012] Preferably, the spacer is provided with different lengths to adapt to the spacing between the lenses or mirror groups.

[0013] Preferably, one end of the second lens barrel is provided with a first compression ring, and one end of the third lens barrel is provided with a second compression ring; the mirror group or the lens is limited inside the first lens barrel, the second lens barrel, and the third lens barrel by the first compression ring and the second compression ring.

[0014] Preferably, the first screw thread and the second screw thread are independently adjusted, so that the focusing and focusing functions can be simultaneously or separately performed.

[0015] Preferably, the mirror group distance adjusting structure is applied to a photographic lens or an optical imaging device.

[0016] The mirror group distance adjusting structure provided by the utility model has the following beneficial effects:

[0017] In the utility model, through first thread and second thread setting at both ends of first mirror barrel, and second mirror barrel and third mirror barrel matched with it, flexible movement of mirror group or lens in optical axis direction is realized, so the purpose that mirror group distance is accurately adjusted is achieved. In addition, the mirror group distance adjusting structure is reasonable in design, simple in structure, easy to manufacture and maintain, reduces production cost, improves production efficiency. Meanwhile, since second mirror barrel and third mirror barrel can independently move on first mirror barrel based on first thread and second thread respectively, focusing and focusing function can be simultaneously or respectively carried out, so that the flexibility and applicability of lens are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawings needed to be used in the utility model embodiment, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings, these are within the protection scope of the utility model.

[0019] Figure 1 It is a kind of mirror group distance adjusting structure structure schematic diagram;

[0020] Figure 2 It is a kind of mirror group distance adjusting structure section structure schematic diagram;

[0021] Parts and numbers in the drawing:

[0022] 100-first mirror barrel, 110-first thread, 120-second thread, 130- spacer, 140-first compression ring, 150-second compression ring;

[0023] 200-second mirror barrel, 210-first focusing ring;

[0024] 300-third mirror barrel, 310-second focusing ring, 320-rack;

[0025] 410-mirror group, 420-lens. DETAILED DESCRIPTION

[0026] For the purpose, technical scheme and advantages of the embodiments of the present application to be clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be noted that, in this article, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements 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. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of additional identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the present application and various features in the embodiments can be combined with each other, and are all within the protection scope of the present application.

[0027] Embodiment 1

[0028] Please refer to Figure 1 and Figure 2 The embodiments of the present application provide a mirror group distance adjusting structure, which comprises a first lens barrel 100, a second lens barrel 200 and a third lens barrel 300 respectively sleeved at both ends of the first lens barrel 100. The surfaces of both ends of the first lens barrel 100 are respectively provided with a first thread 110 and a second thread 120. The first thread 110 and the second thread 120 are arranged to be screwed with the second lens barrel 200 and the third lens barrel 300, so as to realize the relative rotation and movement between the lens barrels. When it is necessary to adjust the distance between the lenses 420 in the mirror group 410, the user can rotate the second lens barrel 200 or the third lens barrel 300 to move along the first thread 110 or the second thread 120 on the first lens barrel 100, so as to change the relative position of the lenses 420 in the mirror group 410, so as to achieve the purpose of adjusting the focal length or the image distance. This design not only has a simple structure and is convenient to operate, but also ensures the stability and reliability of the connection between the lens barrels through the threaded connection.

[0029] Please refer to Figure 1The second lens barrel 200 and the third lens barrel 300 are mounted on the first lens barrel 100 based on the first thread 110 and the second thread 120, and the second lens barrel 200 and the third lens barrel 300 can be moved along the optical axis direction on the first lens barrel 100 based on the first thread 110 and the second thread 120 respectively. During the movement, the second lens barrel 200 and the third lens barrel 300 can accurately adjust the relative position between them and the first lens barrel 100, so as to realize the fine adjustment of the distance between the lens 420 or the lens group 410. In addition, after the adjustment is completed, the user can lock the lens barrel by slightly rotating, which ensures the stability of the lens group 410 structure, prevents displacement due to vibration or external force during use, and ensures the stability and precision of the optical system. This design not only improves the flexibility of adjustment, but also ensures the reliability and durability of the lens group 410 structure.

[0030] The first lens barrel 100, the second lens barrel 200 and the third lens barrel 300 are all hollow, and the inside is provided with a space for accommodating the lens 420; the first lens barrel 100, the second lens barrel 200 and the third lens barrel 300 are all provided with a lens group 410 or a lens 420 along the optical axis direction.

[0031] Please refer to Figure 2 The outer part of the second lens barrel 200 and the third lens barrel 300 is respectively connected with the first focusing ring 210 and the second focusing ring 310; by turning the first focusing ring 210 and the second focusing ring 310, the second lens barrel 200 and the third lens barrel 300 can produce relative movement based on the first lens barrel 100.

[0032] When the second lens barrel 200 and the first lens barrel 100 produce relative movement, the lens group 410 or the lens 420 in the second lens barrel 200 moves as a whole to realize the focusing function.

[0033] When the third lens barrel 300 and the first lens barrel 100 produce relative movement, the lens 420 in the third lens barrel 300 moves close to or away from other lens groups 410 or lenses 420.

[0034] Please refer to Figure 2The first focusing ring 210 and the second focusing ring 310 are provided with a plurality of evenly spaced rotation teeth 320 for manual rotation by the user. The rotation teeth 320 increase the friction on the surface of the focusing ring, making it easier for the user to apply force when rotating the focusing ring, while ensuring the accuracy and stability of the rotation action. In addition, the design of the rotation teeth 320 also provides a good hand feel, allowing the user to feel clear rotation feedback during the adjustment of the focal length, thereby achieving precise control of the focal length. This design not only improves the user experience, but also further enhances the reliability and practicality of the focusing function.

[0035] The first lens barrel 100, the second lens barrel 200, and the third lens barrel 300 are also provided with a spacer 130 between the lens 420 or lens group 410 installed inside. The spacer 130 is provided with different lengths to adapt to the spacing between the lens 420 or lens group 410. The spacer 130 is used to fix the position of the lens 420 or lens group 410, ensuring the stability and accuracy of their relative positions. Different lengths of spacer 130 can be flexibly selected according to actual needs to adapt to the spacing requirements between different lenses 420 or lens groups 410. This design not only improves the stability and reliability of the lens structure, but also helps to optimize the optical performance of the lens, ensuring that the imaging quality reaches the best state. At the same time, the use of the spacer 130 also simplifies the assembly process of the lens, improving production efficiency.

[0036] Please refer to Figure 2 One end of the second lens barrel 200 is provided with a first compression ring 140, and one end of the third lens barrel 300 is provided with a second compression ring 150; the lens group 410 or lens 420 is limited inside the first lens barrel 100, the second lens barrel 200, and the third lens barrel 300 through the first compression ring 140 and the second compression ring 150. The first compression ring 140 and the second compression ring 150 can increase the support effect of structural stability, prevent the lens 420 or lens group 410 from loosening or shifting inside the lens, and limit the adjustment of the lens 420 or lens group 410 inside the lens barrel. Through the joint action of the first compression ring 140 and the second compression ring 150, the lens 420 or lens group 410 is firmly limited inside the first lens barrel 100, the second lens barrel 200, and the third lens barrel 300, thereby effectively improving the overall stability and durability of the lens. In addition, this design also helps to optimize the optical performance of the lens,

[0037] The adjustment of the first screw thread 110 and the second screw thread 120 is independently set, so that the focusing and focusing functions can be performed simultaneously or separately.

[0038] This independent adjustment design gives the operator greater flexibility and precision when adjusting the lens. Focusing is achieved by rotating the first thread 110, while zooming is achieved by rotating the second thread 120. The two functions do not interfere with each other, allowing the operator to choose to adjust focus or zooming individually, or simultaneously, to achieve the best imaging results, depending on the actual needs.

[0039] Example 2

[0040] Please see Figure 1 and Figure 2 This utility model provides a lens group distance adjustment structure. The lens group distance adjustment structure described in Embodiment 1 can be applied to photographic lenses or optical imaging devices.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A structure for adjusting the mirror group distance, characterized in that, The application relates to a lens group distance adjusting structure, which comprises a first lens barrel (100), a second lens barrel (200) and a third lens barrel (300) sleeved on both ends of the first lens barrel (100) respectively; the surfaces of the two ends of the first lens barrel (100) are respectively provided with a first thread (110) and a second thread (120); The second lens barrel (200) and the third lens barrel (300) are installed on the first lens barrel (100) based on the first thread (110) and the second thread (120), and the second lens barrel (200) and the third lens barrel (300) can respectively move along the optical axis direction on the first lens barrel (100) based on the first thread (110) and the second thread (120); The first lens barrel (100), the second lens barrel (200) and the third lens barrel (300) are all hollow, and the interiors are provided with spaces for containing lenses (420); the interiors of the first lens barrel (100), the second lens barrel (200) and the third lens barrel (300) are all provided with lens groups (410) or lenses (420) along the optical axis direction.

2. The mirror set (410) distance adjustment structure of claim 1, wherein, The exteriors of the second lens barrel (200) and the third lens barrel (300) are respectively connected with a first focusing ring (210) and a second focusing ring (310); the second lens barrel (200) and the third lens barrel (300) can produce relative movement based on the first lens barrel (100) by screwing the first focusing ring (210) and the second focusing ring (310).

3. The mirror set (410) distance adjustment structure of claim 2, wherein, When the second lens barrel (200) and the first lens barrel (100) produce relative movement, the lens group (410) or the lens (420) in the second lens barrel (200) moves as a whole to realize the focusing function.

4. The mirror set (410) distance adjustment structure of claim 2, wherein, When the third lens barrel (300) and the first lens barrel (100) produce relative movement, the lens (420) in the third lens barrel (300) moves close to or away from other lens groups (410) or lenses (420).

5. The mirror set (410) distance adjustment structure of claim 2, wherein, The first focusing ring (210) and the second focusing ring (310) are provided with a plurality of gear teeth (320) which are uniformly spaced and used for manual rotation by a user.

6. The structure of claim 1, wherein The lenses (420) or the lens groups (410) installed in the first lens barrel (100), the second lens barrel (200) and the third lens barrel (300) are further provided with a spacer (130).

7. The structure of claim 6, wherein The spacer (130) is provided with different lengths of dimensions to adapt to the spacing between the lenses (420) or the lens groups (410).

8. The structure for adjusting the MCD according to claim 1, wherein One end of the second lens barrel (200) is provided with a first pressing ring (140), and one end of the third lens barrel (300) is provided with a second pressing ring (150); the lens group (410) or the lens (420) is limited in the interiors of the first lens barrel (100), the second lens barrel (200) and the third lens barrel (300) by the first pressing ring (140) and the second pressing ring (150).

9. The structure of claim 6, wherein The adjustment of the first thread (110) and the second thread (120) is independently arranged, so that the focusing and focusing functions can be simultaneously or respectively performed.

10. The structure of claim 1-9, wherein, The lens group distance adjusting structure is applied to a photographic lens or an optical imaging device.

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