Wide-angle lens focusing structure
By designing a focusing structure in the wide-angle lens that allows the lens assembly to move inside the sleeve, the problem of the focusing base occupying surgical space was solved, and the smoothness of lens focusing and the stability of image quality were achieved.
Patent Information
- Application Number
- CN202520249066.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-02-17
AI Technical Summary
In existing technologies, the wide-angle lens focusing base occupies space in the surgical microscope, making it impossible to use some longer surgical instruments and affecting surgical operations.
Design a wide-angle lens focusing structure, in which the lens assembly is set inside the sleeve. The focusing assembly enables the lens to move in the height direction, reducing the height of the focusing base while ensuring sufficient focusing movement of the lens.
It effectively reduces the interference of the focusing base on the surgical space, provides more operating space, and ensures the smoothness of the lens focusing process and the image quality.
Smart Images
Figure CN223598003U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wide-angle lens focusing technical field, specifically, relate to a wide-angle lens focusing structure. BACKGROUND
[0002] The distance from the ophthalmic surgical microscope objective to the patient's corneal vertex is generally less than 200mm. The focusing base part of the non-contact fundus wide-angle observation mirror needs to be installed below the surgical microscope objective, and the focusing lens in the focusing base moves up and down to realize focusing. The focusing base in the prior art occupies the surgical space, which causes some relatively long surgical instruments to be unable to be used, and interferes with the surgery. SUMMARY
[0003] The utility model discloses a kind of wide-angle lens focusing structures to improve the above problems. To achieve the above purpose, the technical solutions adopted by the utility model are as follows:
[0004] The application provides a wide-angle lens focusing structure, which comprises a main body structure, a sleeve, a lens assembly and a focusing assembly, the main body structure is provided with a first groove; the sleeve is arranged inside the first groove; the lens assembly is arranged inside the sleeve, and the lens assembly comprises a lens barrel, a lens pressing ring and a lens; the lens barrel is sleeved in the inside of the sleeve; the lens is fixed at the bottom of the lens barrel by the lens pressing ring; the focusing assembly is fixedly arranged on the main body structure; the focusing assembly is fixedly connected with the lens assembly; and the focusing assembly is used to move the lens in the height direction of the sleeve.
[0005] Optionally, the side wall of the sleeve is provided with a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are oppositely arranged, and a gap is arranged between the first fixed plate and the second fixed plate; the first fixed plate and the second fixed plate are arranged on one side close to the focusing assembly.
[0006] Optionally, the focusing assembly comprises a first focusing knob, a second focusing knob, a lead screw, a sliding block and a fixed column; the first focusing knob and the second focusing knob are respectively sleeved at two ends of the lead screw; the sliding block is sleeved on the lead screw; and the fixed column is arranged on the sliding block.
[0007] Optionally, the fixed column is arranged in the gap between the first fixed plate and the second fixed plate.
[0008] Optionally, a second groove and a third groove are formed in the main body structure; the second groove and the third groove are symmetrically arranged on both sides of the main body structure; and the two ends of the lead screw are arranged in the second groove and the third groove.
[0009] Optionally, the lead screw is arranged perpendicularly to the first fixing plate.
[0010] Optionally, a positioning groove is arranged on the main body structure, and the positioning groove is arranged at the edge of the sleeve.
[0011] Optionally, a first limiting column is arranged on the lens barrel, and a first cam groove is arranged on the sleeve, and the first limiting column is matched with the first cam groove.
[0012] Optionally, one end of the first limiting column is fixedly connected with the lens barrel, and the other end of the first limiting column is arranged in the positioning groove.
[0013] Optionally, at least two second limiting columns are arranged on the lens barrel, the second limiting columns are uniformly distributed on the side wall of the lens barrel, at least two second cam grooves are arranged on the sleeve, and the second limiting columns are matched with the second cam grooves one by one.
[0014] The beneficial effects of the present application are as follows:
[0015] The present application has the beneficial effects that:
[0016] Other features and advantages of the present application will be described in the following description, and some of them will become apparent from the description, or will be understood from the practice of the present application. The purpose and other advantages of the present application can be achieved and obtained by the structure specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.
[0018] Figure 1 The present application is a wide-angle lens focusing structure schematic diagram.
[0019] Figure 2 The second groove and the third groove schematic diagram are described in the embodiments of the present application.
[0020] Figure 3 It is a first limiting post and second limiting post structure schematic view of the embodiment of the utility model.
[0021] Figure 4 It is the layout drawing of second cam groove.
[0022] Marked in the drawing: 1, main body structure;2, sleeve;3, lens barrel;4, lens compression ring;5, lens;6, first fixed plate;7, second fixed plate;8, first focusing knob;9, second focusing knob;10, lead screw;11, sliding block;12, fixed column;13, positioning groove;14, first limiting post;15, first cam groove;16, second limiting post;17, second cam groove;18, second recess;19, third recess. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model described and shown in the drawing here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawing is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.
[0024] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Meanwhile, in the description of the utility model, the terms "first", "second" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
[0025] As Figure 1As shown, the embodiment provides a wide-angle lens focusing structure, which comprises a main body structure 1, a sleeve 2, a lens assembly and a focusing assembly, the main body structure 1 is provided with a first groove; the sleeve 2 is arranged inside the first groove; the lens assembly is arranged inside the sleeve 2, the lens assembly comprises a lens barrel 3, a lens compression ring 4 and a lens 5, the lens barrel 3 is sleeved inside the sleeve 2, and the lens 5 is fixed at the bottom of the lens barrel 3 through the lens compression ring 4; the focusing assembly is fixedly arranged on the main body structure 1, the focusing assembly is fixedly connected with the lens assembly, and the focusing assembly is used for moving the lens 5 along the height direction of the sleeve 2; it is necessary to try to reduce the height of the focusing base in the operation to make the doctor have larger operation space, otherwise the free tilting or standing of the surgical instrument will be affected, and some relatively long surgical instruments cannot be used; the reasonable design and matching of the lens assembly and the focusing assembly can not only reduce the height of the focusing base, but also ensure the sufficiency of the lens focusing movement stroke.
[0026] In one specific embodiment of the present disclosure, the side wall of the sleeve 2 is provided with a first fixed plate 6 and a second fixed plate 7, the first fixed plate 6 and the second fixed plate 7 are oppositely arranged, a gap is arranged between the first fixed plate 6 and the second fixed plate 7, the first fixed plate 6 and the second fixed plate 7 are arranged on one side close to the focusing assembly, the focusing assembly comprises a first focusing knob 8, a second focusing knob 9, a lead screw 10, a sliding block 11 and a fixed column 12, the first focusing knob 8 and the second focusing knob 9 are respectively sleeved on both ends of the lead screw 10, the sliding block 11 is sleeved on the lead screw 10, and the fixed column 12 is arranged on the sliding block 11; the fixed column 12 is arranged in the gap between the first fixed plate 6 and the second fixed plate 7; when focusing is needed, any one of the first focusing knob 8 or the second focusing knob 9 is rotated, the lead screw 10 is rotated, the sliding block 11 on the lead screw 10 is driven to move linearly along the lead screw 10, and at this time, the fixed column 12 arranged between the first fixed plate 6 and the second fixed plate 7 drives the sleeve 2 to rotate and move in the first groove.
[0027] As Figure 2 shown, in one specific embodiment of the present disclosure, the main body structure 1 is provided with a second groove 18 and a third groove 19, the second groove 18 and the third groove 19 are symmetrically arranged on both sides of the main body structure 1, and both ends of the lead screw 10 are arranged in the second groove 18 and the third groove 19.
[0028] In one specific embodiment of the present disclosure, the lead screw 10 is arranged vertically with the first fixed plate 6.
[0029] As Figure 3 and Figure 4As shown, in one specific embodiment of the present disclosure, a positioning groove 13 is formed on the main body structure 1, the positioning groove 13 is arranged at the edge of the sleeve 2, a first limiting column 14 is arranged on the lens barrel 3, a first cam groove 15 is arranged on the sleeve 2, the first limiting column 14 is matched with the first cam groove 15, one end of the first limiting column 14 is fixedly connected with the lens barrel 3, the other end of the first limiting column 14 is arranged in the positioning groove 13, at least two second limiting columns 16 are arranged on the lens barrel 3, the second limiting columns 16 are uniformly distributed on the side wall of the lens barrel 3, at least two second cam grooves 17 are arranged on the sleeve 2, the second limiting columns 16 are matched with the second cam grooves 17 one by one, the first limiting column 14 and the second limiting column 16 fixed on the lens barrel 3 move in the first cam groove 15 and the second cam groove 17 arranged on the sleeve 2, at this time, since the first limiting column 14 is nested in the positioning groove 13 formed on the main body structure 1, the lens barrel 8 can only move linearly along the height direction of the lens barrel 8 to realize focusing, and meanwhile, the uniform arrangement of the plurality of second limiting columns 16 and the second cam grooves 17 can improve the focusing accuracy.
[0030] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, 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 indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.
[0031] In the description of the present application, it should be explained that the terms "setting", "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0032] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
[0033] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A wide-angle lens focusing structure, characterized in that, The utility model relates to a zoom lens, which comprises: a main body structure (1) provided with a first groove; a sleeve (2) arranged inside the first groove; a lens assembly arranged inside the sleeve (2), the lens assembly comprising a lens barrel (3), a lens pressing ring (4) and a lens (5), the lens barrel (3) being sleeved inside the sleeve (2), and the lens (5) being fixed at the bottom of the lens barrel (3) by the lens pressing ring (4); a focusing assembly fixedly arranged on the main body structure (1), the focusing assembly being fixedly connected with the lens assembly, and the focusing assembly being used for moving the lens (5) along the height direction of the sleeve (2).
2. The wide-angle mirror focusing structure according to claim 1, characterized in that: The side wall of the sleeve (2) is provided with a first fixed plate (6) and a second fixed plate (7), the first fixed plate (6) and the second fixed plate (7) are oppositely arranged, a gap is arranged between the first fixed plate (6) and the second fixed plate (7), and the first fixed plate (6) and the second fixed plate (7) are arranged on the side close to the focusing assembly.
3. The wide-angle mirror focusing structure of claim 2, wherein: The focusing assembly comprises a first focusing knob (8), a second focusing knob (9), a lead screw (10), a sliding block (11) and a fixed column (12), the first focusing knob (8) and the second focusing knob (9) are respectively sleeved at the two ends of the lead screw (10), the sliding block (11) is sleeved on the lead screw (10), and the fixed column (12) is arranged on the sliding block (11).
4. The wide-angle mirror focusing structure according to claim 3, characterized in that: The fixed column (12) is arranged in the gap between the first fixed plate (6) and the second fixed plate (7).
5. The wide-angle mirror focusing structure of claim 3, wherein: Second grooves (18) and third grooves (19) are formed in the main body structure (1), the second grooves (18) and the third grooves (19) are symmetrically arranged on the two sides of the main body structure (1), and the two ends of the lead screw (10) are arranged in the second grooves (18) and the third grooves (19).
6. The wide-angle mirror focusing structure of claim 3, wherein: The lead screw (10) is arranged perpendicularly to the first fixed plate (6).
7. The wide-angle mirror focusing structure of claim 1, wherein: A positioning groove (13) is formed in the main body structure (1), and the positioning groove (13) is arranged at the edge of the sleeve (2).
8. The wide-angle mirror focusing structure of claim 7, wherein: A first limiting column (14) is arranged on the lens barrel (3), a first cam groove (15) is arranged on the sleeve (2), and the first limiting column (14) cooperates with the first cam groove (15).
9. The wide-angle mirror focusing structure of claim 8, wherein: One end of the first limiting column (14) is fixedly connected with the lens barrel (3), and the other end of the first limiting column (14) is arranged inside the positioning groove (13).
10. The wide-angle mirror focusing structure of claim 1, wherein: At least two second limiting columns (16) are arranged on the lens barrel (3), the second limiting columns (16) are uniformly distributed on the side wall of the lens barrel (3), at least two second cam grooves (17) are arranged on the sleeve (2), and the second limiting columns (16) one-by-one cooperate with the second cam grooves (17).