Adjustable optical zoom lens

Abstract

The utility model relates to the technical field of lenses, in particular to an adjustable optical zoom lens which comprises a lens body, a lens frame is fixedly connected to the outer wall of one end of the lens body, a lens is fixedly connected to one end of the lens body, a protection sheet is movably connected to an inner cavity of the lens frame in a sleeved mode, and the protection sheet is attached to the lens. A plurality of first limiting blocks are fixedly connected to the outer wall of the protection piece, a plurality of first moving grooves, second moving grooves and third moving grooves are formed in the inner wall of the mirror frame, the first moving grooves, the second moving grooves and the third moving grooves communicate with one another, and the first limiting blocks are slidably connected into the first moving grooves and the second moving grooves; a second limiting block is slidably connected into the third moving groove, and one end of the second limiting block extends into the first moving groove to be attached to one side of the first limiting block. Compared with the prior art, the protection sheet protects the lens, prevents dust or gravel from directly contacting the lens to damage the lens, and prolongs the service life of the lens.

Description

Technical Field

[0001] The utility model relates to the technical field of lenses, in particular to an adjustable optical zoom lens. Background Art

[0002] A zoom lens is a camera lens that can change the focal length within a certain range, thereby obtaining different widths of field angles, different sizes of images and different ranges of scenery. The zoom lens can change the shooting range by changing the focal length without changing the shooting distance, so it is very helpful for picture composition.

[0003] In the prior art, a Chinese patent with publication number CN209248138U proposes an optical zoom lens. The lens body and several lenses arranged inside can ensure a good zoom effect. The lens is small in size, easy to carry, and convenient for use outside. The detachable lens can ensure that focusing can be achieved without having to constantly replace the lens, and the focusing accuracy is high and the operation is convenient. However, in actual application, the existing adjustable optical zoom lens has a wide range of application scenarios. During use, the outer side of the lens is easily contaminated with dust, etc., and needs to be cleaned. The dust contaminated by the cleaned lens may scratch the lens. Therefore, after frequent cleaning of the lens, many scratches are likely to appear on the outer side of the lens, which affects the service life of the lens. Therefore, we disclose an adjustable optical zoom lens. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an adjustable optical zoom lens to solve the problem that many scratches are easily formed on the outer side of the lens, which affects the service life of the lens.

[0005] Based on the above-mentioned purpose, the utility model provides an adjustable optical zoom lens, including a lens body, the outer wall of one end of the lens body is fixedly connected to a frame, one end of the lens body is fixedly connected to a lens, the inner cavity of the frame is movably sleeved with a protective sheet, the protective sheet is fitted with the lens, the outer wall of the protective sheet is fixedly connected to a plurality of first limit blocks, the inner wall of the frame is provided with a plurality of first moving grooves, a second moving groove and a third moving groove, the first moving groove, the second moving groove and the third moving groove are connected, the first limit block is slidably connected to the first moving groove and the second moving groove, the third moving groove is slidably connected to the second limit block, one end of the second limit block extends into the first moving groove and fits with one side of the first limit block, the other end of the second limit block is fixedly connected to a limit spring, and the limit spring is fixedly connected to the third moving groove.

[0006] Preferably, the first movable groove is an L-shaped groove, and the first limiting block and the third movable groove are respectively located on two adjacent sides of the first movable groove.

[0007] Preferably, a fourth movable groove is opened on one side of the third movable groove, and the fourth movable groove extends to the outer wall of the frame. The other end of the second limit block is fixedly connected to a connecting block, and the connecting block is slidably connected in the fourth movable groove, and one end of the connecting block extends to the outside of the fourth movable groove.

[0008] Preferably, one end of the connecting block extending to the outside of the fourth movable groove is fixedly connected to a connecting ring, and the connecting ring is rotatably connected to the frame.

[0009] Preferably, an anti-slip ridge is fixedly connected to the outer wall of the connecting ring, and the width of the connecting ring is greater than the width of the fourth movable groove.

[0010] Preferably, one end of the protection sheet is fixedly connected to a plurality of connecting plates, the connecting plates are adapted to the frame, the connecting plates are L-shaped, and the connecting plates correspond to the first movable grooves.

[0011] The beneficial effects of the utility model are as follows: the protective sheet is used to protect the lens, so as to prevent dust or sand and gravel from directly contacting the lens and causing damage to the lens, thereby extending the service life of the lens. The staff takes the protective sheet and aligns the first limit block with the first movable groove, then pushes the protective sheet in the direction close to the lens, and at the same time, the first limit block enters the first movable groove. After the first limit block is pushed to the bottom end of the first movable groove, the protective sheet is rotated so that the first limit block slides to the other end of the first movable groove, and then the protective sheet is pushed in the direction close to the lens again so that the protective sheet fits the lens, reducing the friction between the protective sheet and the lens during installation and removal, thereby reducing the damage to the lens caused by the protective sheet during installation and removal, and also reducing the impact of the protective sheet on the lens during use;

[0012] The connecting ring drives several connecting blocks and the second limit block to move simultaneously, which facilitates the disassembly of the first limit block and the protective sheet and the use of the staff. The width of the connecting ring is greater than the width of the fourth movable groove, which prevents dust from entering the fourth movable groove. The connecting plate limits the direction of movement of the protective sheet in the frame, which facilitates the connection between the first limit block and the first movable groove, making the protective sheet easy to install. The connecting plate can prevent dust and other small objects from entering the first movable groove, thereby ensuring smooth loading and unloading of the protective sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the frame, lens and protective sheet of the utility model;

[0016] Figure 3 It is a partially cutaway three-dimensional structural diagram of the mirror frame of the present invention.

[0017] The following are marked in the figure:

[0018] 1. Lens body; 2. Lens frame; 3. Lens; 4. Protective sheet; 5. First limit block; 6. First movable groove; 7. Second movable groove; 8. Third movable groove; 9. Fourth movable groove; 10. Second limit block; 11. Connecting block; 12. Connecting ring; 13. Limit spring; 14. Connecting plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0021] like Figure 1-Figure 3As shown, an adjustable optical zoom lens includes a lens body 1, an outer wall of one end of the lens body 1 is fixedly connected to a frame 2, one end of the lens body 1 is fixedly connected to a lens 3, an inner cavity of the frame 2 is movably sleeved with a protective sheet 4, the protective sheet 4 is fitted with the lens 3, the outer wall of the protective sheet 4 is fixedly connected to a plurality of first limit blocks 5, the inner wall of the frame 2 is provided with a plurality of first moving grooves 6, second moving grooves 7 and third moving grooves 8, the first moving grooves 6, the second moving grooves 7 and the third moving grooves 8 are connected, the first limit block 5 is slidably connected to the first moving grooves 6 and the second moving grooves 7, the third moving groove 8 is slidably connected to the second limit block 10, one end of the second limit block 10 extends into the first moving groove 6 and fits with one side of the first limit block 5, and the second limit block The other end of 10 is fixedly connected to a limit spring 13, and the limit spring 13 is fixedly connected to the third moving groove 8. The first moving groove 6 is an L-shaped groove. The first limit block 5 and the third moving groove 8 are respectively located on both sides adjacent to the first moving groove 6. A fourth moving groove 9 is provided on one side of the third moving groove 8. The fourth moving groove 9 extends to the outer wall of the frame 2. The other end of the second limit block 10 is fixedly connected to a connecting block 11, and the connecting block 11 is slidably connected to the fourth moving groove 9. One end of the connecting block 11 extends to the outside of the fourth moving groove 9. When in use, the frame 2 is fixedly connected to the outer wall of one end of the lens body 1, and the lens 3 is fixedly connected to one end of the lens body 1. The inner cavity of the frame 2 is movably sleeved with a protective sheet 4, and the protective sheet 4 fits with the lens 3 so that the protective sheet 4 can To protect the lens 3, prevent dust or sand and gravel from directly contacting the lens 3 and causing damage to the lens 3, and extend the service life of the lens 3, a plurality of first limit blocks 5 are fixedly connected to the outer wall of the protective sheet 4, and a plurality of first moving grooves 6, second moving grooves 7 and third moving grooves 8 are opened on the inner wall of the frame 2, and the first moving grooves 6, the second moving grooves 7 and the third moving grooves 8 are connected, and the first limit block 5 is slidably connected to the first moving grooves 6 and the second moving grooves 7, so that the staff takes the protective sheet 4 and puts the first limit block 5 into correspondence with the first moving groove 6, and then pushes the protective sheet 4 in the direction close to the lens 3, and at the same time the first limit block 5 enters the first moving groove 6. After the first limit block 5 is pushed to the bottom end of the first moving groove 6, the protective sheet 4 is rotated so that The first limit block 5 slides to the other end of the first moving groove 6, and then the protective sheet 4 is pushed again in the direction close to the lens 3, so that the protective sheet 4 is fitted with the lens 3, reducing the friction between the protective sheet 4 and the lens 3 during installation and removal, thereby reducing the damage to the lens 3 caused by the protective sheet 4 during installation and removal, and also reducing the impact of the protective sheet 4 on the use of the lens 3. When pushing the protective sheet 4, the protective sheet 4 drives the first limit block 5 to slide from the first moving groove 6 to the second moving groove 7, and is connected to the second limit block 10 through the sliding connection in the third moving groove 8. One end of the second limit block 10 extends into the first moving groove 6 and fits with one side of the first limit block 5. The other end of the second limit block 10 is fixedly connected to the limit spring 13, and the limit spring 13 is fixedly connected to the third moving groove 8.The limiting spring 13 limits the position of the first limiting block 5 in the second moving groove 7 through the second limiting block 10, so that the first limiting block 5 cannot be retreated into the first moving groove 6, thereby making the position of the protective sheet 4 stable after installation, avoiding the shaking of the protective sheet 4 and the friction between the lens 3, thereby causing damage to the lens 3. The first moving groove 6 is an L-shaped groove, and the first limiting block 5 and the third moving groove 8 are respectively located on both sides adjacent to the first moving groove 6, so that the left and right sides of the second moving groove 7 and the third moving groove 8 will not interfere with each other, so that the first moving groove 6 limits the movement direction of the first limit block 5 and improves the position stability of the protective sheet 4. A fourth movement slot 9 is opened on one side of the third movement slot 8. The fourth movement slot 9 extends to the outer wall of the frame 2. The other end of the second limit block 10 is fixedly connected to a connecting block 11. The connecting block 11 is slidably connected in the fourth movement slot 9. One end of the connecting block 11 extends to the outside of the fourth movement slot 9. The operator can move the second limit block 10 simultaneously by driving the connecting block 11, which facilitates the installation and removal of the first limit block 5 and also improves the position stability of the second limit block 10.

[0022] As a preferred implementation in this embodiment, Figure 1 and Figure 3 As shown, one end of the connecting block 11 extending to the outside of the fourth movable groove 9 is fixedly connected to a connecting ring 12, and the connecting ring 12 is rotatably connected to the frame 2. The outer wall of the connecting ring 12 is fixedly connected with an anti-slip ridge, and the width of the connecting ring 12 is greater than the width of the fourth movable groove 9. One end of the protective sheet 4 is fixedly connected to a plurality of connecting plates 14, which are adapted to the frame 2. The connecting plate 14 is L-shaped, and the connecting plate 14 corresponds to the first movable groove 6. The end extending to the outside of the fourth movable groove 9 through the connecting block 11 is fixedly connected to the connecting ring 12, and the connecting ring 12 is rotatably connected to the frame 2, so that the connecting ring 12 can drive a plurality of connecting blocks 11 and the second limit block 10 to move simultaneously, thereby facilitating the disassembly of the first limit block 5 and the protective sheet 4. To facilitate the use of the staff, the outer wall of the connecting ring 12 is fixedly connected with an anti-slip edge to facilitate the rotation of the connecting ring 12. The width of the connecting ring 12 is greater than the width of the fourth movable groove 9 to prevent dust from entering the fourth movable groove 9. One end of the protective sheet 4 is fixedly connected with a number of connecting plates 14, which are adapted to the frame 2 so that the connecting plates 14 limit the direction of movement of the protective sheet 4 in the frame 2, facilitating the connection between the first limit block 5 and the first movable groove 6, making the protective sheet 4 easy to install. The connecting plate 14 is L-shaped and corresponds to the first movable groove 6, so that the connecting plate 14 can prevent small objects such as dust from entering the first movable groove 6, thereby ensuring smooth loading and unloading of the protective sheet 4.

[0023] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0024] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An adjustable optical zoom lens, comprising a lens body (1), characterized in that: The outer wall of one end of the lens body (1) is fixedly connected to a frame (2), one end of the lens body (1) is fixedly connected to a lens (3), the inner cavity of the frame (2) is movably sleeved with a protective sheet (4), the protective sheet (4) is in contact with the lens (3), the outer wall of the protective sheet (4) is fixedly connected to a plurality of first limit blocks (5), the inner wall of the frame (2) is provided with a plurality of first movable grooves (6), second movable grooves (7) and third movable grooves (8), the first movable grooves (6) and the second movable grooves (7) are respectively provided on the inner wall of the lens body (1) and the lens (3) are respectively provided on the inner wall of the lens body (1). The first limit block (5) is connected to the first movable groove (6) and the second movable groove (7) in a sliding manner. The third movable groove (8) is slidably connected to a second limit block (10). One end of the second limit block (10) extends into the first movable groove (6) and fits with one side of the first limit block (5). The other end of the second limit block (10) is fixedly connected to a limit spring (13). The limit spring (13) is fixedly connected to the third movable groove (8).

2. The adjustable optical zoom lens according to claim 1, wherein: The first movable groove (6) is an L-shaped groove, and the first limiting block (5) and the third movable groove (8) are respectively located on two adjacent sides of the first movable groove (6).

3. The adjustable optical zoom lens according to claim 1, wherein: A fourth movable groove (9) is provided on one side of the third movable groove (8), and the fourth movable groove (9) extends to the outer wall of the mirror frame (2). The other end of the second limit block (10) is fixedly connected to a connecting block (11), and the connecting block (11) is slidably connected in the fourth movable groove (9), and one end of the connecting block (11) extends to the outside of the fourth movable groove (9).

4. The adjustable optical zoom lens according to claim 3, wherein: One end of the connecting block (11) extending to the outside of the fourth movable groove (9) is fixedly connected to a connecting ring (12), and the connecting ring (12) is rotatably connected to the mirror frame (2).

5. The adjustable optical zoom lens according to claim 4, wherein: The outer wall of the connecting ring (12) is fixedly connected with an anti-slip ridge, and the width of the connecting ring (12) is greater than the width of the fourth movable groove (9).

6. The adjustable optical zoom lens according to claim 1, wherein: One end of the protection sheet (4) is fixedly connected to a plurality of connecting plates (14), the connecting plates (14) are adapted to the mirror frame (2), the connecting plates (14) are L-shaped, and the connecting plates (14) correspond to the first movable grooves (6).

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