Prime lens

Abstract

The utility model provides a prime lens. The prime lens comprises a lens barrel and a spring. The prime lens body is arranged at the top of the lens barrel, a connecting ring is fixedly installed at the bottom of the prime lens body, and the connecting ring is arranged at the top of the inner side face of the lens barrel; the clamping frames are fixedly installed in the two sides of the lens cone respectively, and the inner side faces of the clamping frames are connected with abutting blocks in a sliding mode; and the fixing frames are fixedly installed in the two sides of the connecting ring correspondingly, and clamping blocks are slidably connected to the inner side faces of the fixing frames. According to the prime lens provided by the utility model, through mutual cooperation of the fixing frame, the spring, the clamping block, the clamping frame, the abutting block and other structures, when the prime lens body needs to be disassembled, only the abutting block needs to be pressed to push the clamping block, so that the clamping block moves out from the inner side surface of the clamping frame, and the prime lens body can be disassembled. Therefore, the prime lens body can be disassembled, and the operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to fixed focus lens technical field especially relates to a fixed focus lens. BACKGROUND

[0002] With the rapid development of camera lens market, the customer's requirement to lens performance is increasing, and fixed focus lens is widely used in security monitoring field because of high definition imaging.

[0003] Such as prior art one kind is super big aperture high definition fixed focus lens, its top movable plug connection has fixed focus lens body through lens mounting cylinder, the top of lens mounting cylinder is equipped with rectangular groove on both sides, movable clamping has rectangular plate in the inside of rectangular groove, the top of rectangular plate extends to the outside of rectangular groove and is fixedly connected with fixed focus lens body and passes through rectangular groove, the top of lens mounting cylinder and the rear of rectangular groove are fixedly connected with vertical board. The utility model discloses through lens mounting cylinder, fixed focus lens body, rectangular groove, rectangular plate, vertical board, fixed slot, limiting mechanism, movable rod, handle, connecting plate, plug-in block, sleeve spring, rubber hook, horizontal board and ring cooperation, the effect of convenient disassembly fixed focus lens body is played, simple operation, time saving and labor saving, compared with the mode of screw connection, the utility model will not appear the phenomenon of thread slippage, greatly improve the practicability of the device.

[0004] However, when the fixed focus lens body is disassembled, one hook needs to be hung on the top of the hanging ring, and then the other rubber hook is pulled to disassemble the fixed focus lens body, which is relatively cumbersome to operate.

[0005] Therefore, it is necessary to provide a fixed focus lens to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model provides a fixed focus lens, solve the problem of when the fixed focus lens body is disassembled, relatively cumbersome operation.

[0007] To solve the above technical problems, the utility model provides a fixed focus lens, which comprises:

[0008] A lens barrel and a spring;

[0009] A fixed focus lens body is arranged on the top of the lens barrel, and a connecting ring is fixedly installed on the bottom of the fixed focus lens body.

[0010] A clamping frame is fixedly installed on the inside of the lens barrel on both sides, and a abutting block is slidably connected to the inner side of the clamping frame.

[0011] A fixed frame is fixedly installed at the inner sides of the connecting ring on both sides, a clamping block is slidably connected to the inner side of the fixed frame, a spring is fixedly installed at one end of the clamping block, the spring is arranged on the inner side of the fixed frame, and the other end of the clamping block is clamped to the inner side of the clamping frame.

[0012] The fixed-focus lens body comprises a shell, the inside of the shell is provided with a first lens, a second lens, a third lens and a fourth lens from top to bottom, respectively, the focal length of the fixed-focus lens body is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, and the focal length of the fourth lens is f4.

[0013] 1.0 < |f1 / f| < 4.0;

[0014] 1.0 < |f2 / f| < 4.0;

[0015] 1.0 < |f3 / f| < 4.0;

[0016] 1.0 < |f4 / f| < 4.0.

[0017] Preferably, positioning grooves are formed in the two sides of the top of the lens barrel.

[0018] Preferably, first sliding grooves are formed in the top and bottom of the inner side of the fixed frame, first sliding blocks are slidably connected to the inner side of the first sliding grooves, and the first sliding blocks are fixedly installed at one end of the top and bottom of the clamping block, respectively.

[0019] Preferably, second sliding grooves are formed in the top and bottom of the inner side of the clamping frame, second sliding blocks are slidably connected to the inner side of the second sliding grooves, and the second sliding blocks are fixedly installed at one end of the top and bottom of the abutting block, respectively.

[0020] Preferably, one end of the abutting block and the other end of the clamping block abut against each other.

[0021] Preferably, a protective cover is rotatably connected to the top of the clamping frame, and a moving block is fixedly installed at the top of the protective cover.

[0022] Preferably, a magnetic plate is fixedly installed on the inner side of the protective cover, and a metal plate is fixedly installed at the other end of the abutting block.

[0023] Compared with the related art, the fixed-focus lens has the following beneficial effects:

[0024] This utility model provides a fixed-focus lens, which uses a fixed frame, spring, snap-fit ​​block, snap-fit ​​frame and abutment block to cooperate with each other. When it is necessary to disassemble the fixed-focus lens body, simply press the abutment block to push the snap-fit ​​block, thereby moving the snap-fit ​​block out from the inner side of the snap-fit ​​frame. In this way, the fixed-focus lens body can be disassembled, which is convenient and quick. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of a first embodiment of a fixed-focus lens provided by this utility model;

[0026] Figure 2 for Figure 1 The diagram shows a partial cross-sectional structure.

[0027] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0028] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of the fixed-focus lens body;

[0029] Figure 5 A schematic diagram of the structure of a second embodiment of a fixed-focus lens provided by this utility model;

[0030] Figure 6 for Figure 5 The enlarged schematic diagram of part B is shown.

[0031] The following are the labeling elements in the diagram: 1. Lens barrel; 11. Positioning groove; 2. Fixed-focus lens body; 21. Connecting ring; 201. First lens; 202. Second lens; 203. Third lens; 204. Fourth lens; 205. Housing; 3. Fixing frame; 31. Spring; 32. Snap-fit ​​block; 33. First slide groove; 34. First slider; 4. Snap-fit ​​frame; 41. Abutment block; 42. Second slide groove; 43. Second slider; 5. Protective cover; 51. Moving block; 52. Magnetic plate; 53. Metal plate. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0033] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a fixed-focus lens provided by this utility model; Figure 2 for Figure 1 The diagram shows a partial cross-sectional structure.Figure 3 As shown in the enlarged view of part A of FIG. 1; Figure 2 As shown in the enlarged view of part A of FIG. 1; Figure 4 As shown in the enlarged view of part A of FIG. 1; Figure 1 As shown in the enlarged view of part A of FIG. 1. A fixed-focus lens comprises a lens barrel 1 and a spring 31.

[0034] A fixed-focus lens body 2 is arranged at the top of the lens barrel 1, and a connecting ring 21 is fixedly installed at the bottom of the fixed-focus lens body 2.

[0035] A clamping frame 4 is fixedly installed inside the lens barrel 1 on both sides, and an abutting block 41 is slidably connected to the inner side of the clamping frame 4.

[0036] A fixed frame 3 is fixedly installed inside the connecting ring 21 on both sides, and a clamping block 32 is slidably connected to the inner side of the fixed frame 3.

[0037] The fixed-focus lens body 2 comprises a housing 205, and a first lens 201, a second lens 202, a third lens 203, and a fourth lens 204 are arranged inside the housing 205 from top to bottom.

[0038] 1.0<|f1 / f|<4.0;

[0039] 1.0<|f2 / f|<4.0;

[0040] 1.0<|f3 / f|<4.0;

[0041] 1.0<|f4 / f|<4.0.

[0042] The first lens 201 has a negative focal power, the second lens 202 has a positive focal power, the third lens 203 has a positive focal power, and the fourth lens 204 has a negative focal power.

[0043] Positioning grooves 11 are arranged at the top of the lens barrel 1 on both sides.

[0044] The positioning grooves 11 are arranged at the top of the clamping frame 4, so that the clamping block 32 can be accurately clamped into the inner side of the clamping frame 4.

[0045] The top and bottom of the inner side of the fixed frame 3 are provided with first sliding grooves 33, the inner side of the first sliding grooves 33 is slidably connected with first sliding blocks 34, and the first sliding blocks 34 are fixedly installed at one end of the top and bottom of the clamping block 32 respectively.

[0046] The first sliding blocks 34 slide on the inner side of the first sliding grooves 33, so that the clamping block 32 is limited, and the clamping block 32 is prevented from moving out of the inner side of the fixed frame 3.

[0047] The top and bottom of the inner side of the clamping frame 4 are provided with second sliding grooves 42, the inner side of the second sliding grooves 42 is slidably connected with second sliding blocks 43, and the second sliding blocks 43 are fixedly installed at one end of the top and bottom of the abutting block 41 respectively.

[0048] The second sliding blocks 43 slide on the inner side of the second sliding grooves 42, so that the abutting block 41 is limited.

[0049] One end of the abutting block 41 and the other end of the clamping block 32 abut each other.

[0050] The bottom of the clamping block 32 is inclined, so that the clamping block 32 is conveniently clamped into the inner side of the positioning groove 11.

[0051] The working principle of the fixed-focus lens provided by the utility model is as follows:

[0052] When the fixed-focus lens body 2 is installed, the bottom of the clamping block 32 is aligned with the positioning groove 11, then the fixed-focus lens body 2 is pushed downwards, so that the clamping block 32 slides on the inner side of the positioning groove 11, when the clamping block 32 moves to one side of the clamping frame 4, the clamping block 32 is pushed by the elasticity of the spring 31, so that one end of the clamping block 32 is clamped to the inner side of the clamping frame 4, and the lens barrel 1 and the fixed-focus lens body 2 are limited;

[0053] When disassembly is needed, the two abutting blocks 41 are pressed, one end of the abutting block 41 pushes the clamping block 32 out of the inner side of the clamping frame 4, and the spring 31 is contracted, then the fixed-focus lens body 2 is moved upwards for disassembly.

[0054] Compared with the related art, the fixed-focus lens provided by the utility model has the following beneficial effects:

[0055] Through cooperation of the fixing frame 3, the spring 31, the clamping block 32, the clamping frame 4, the abutting block 41 and the like, when the fixed-focus lens body 2 needs to be disassembled, the abutting block 41 is only pressed to push the clamping block 32 out of the inner side of the clamping frame 4, so that the fixed-focus lens body 2 can be disassembled, which is convenient and fast to operate. Embodiment

[0056] Please refer to Figure 5 and Figure 6 , based on the first embodiment of the application, the second embodiment of the application provides another fixed-focus lens. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment.

[0057] Specifically, the second embodiment of the application provides a fixed-focus lens, wherein the clamping frame 4 is rotatably connected with a protective cover 5 at the top, and the protective cover 5 is fixedly installed with a moving block 51 at the top.

[0058] The inner side of the protective cover 5 is fixedly installed with a magnetic plate 52, and the other end of the abutting block 41 is fixedly installed with a metal plate 53.

[0059] The working principle of the fixed-focus lens provided by the utility model is as follows:

[0060] When in use, the protective cover 5 can be rotated to cover the outer side of the abutting block 41, so that the metal plate 53 and the magnetic plate 52 are magnetically attracted, and then the protective cover 5 is limited;

[0061] When the abutting block 41 needs to be pressed, the user can rotate the protective cover 5 at the top of the clamping frame 4 to expose the abutting block 41, so that the abutting block 41 is pressed by the staff.

[0062] Compared with the related art, the fixed-focus lens provided by the utility model has the following beneficial effects:

[0063] Through cooperation of the protective cover 5, the moving block 51, the magnetic plate 52 and the metal plate 53, when the fixed-focus lens body 2 does not need to be disassembled, the protective cover 5 can be covered on the outer side of the abutting block 41, and the magnetic plate 52 and the metal plate 53 are magnetically attracted and limited, so that the abutting block 41 is protected, and the fixed-focus lens body 2 is prevented from falling off due to accidental contact by the user.

[0064] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A fixed focus lens characterized by, The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel.

2. The fixed focus lens of claim 1, wherein The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel.

3. The fixed focus lens of claim 1, wherein The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel.

4. The fixed focus lens of claim 1, wherein The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel.

5. The fixed focus lens of claim 1, wherein The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel.

6. The fixed focal length lens of claim 1, wherein, The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel.

7. The fixed focus lens of claim 6, wherein, The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the fixed focus lens body is fixedly installed with a connecting ring, and the connecting ring is arranged on the top of the inner side of the lens barrel. The utility model relates to a fixed focus lens body, and a fixed focus lens body is arranged on the top of the lens barrel, and the bottom of the

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