Medium-wave infrared continuous zoom lens with dustproof structure

Abstract

The utility model discloses a medium wave infrared continuous zoom lens with a dustproof structure, which comprises a lens body, the right end of the lens body is fixedly connected with a connecting shell, the right end of the connecting shell is provided with a lens, the outer side of the connecting shell is slidably sleeved with a protective cover, the inside of the protective cover is rotatably sleeved with a rotating disc, and the rotating disc is provided with a dustproof cover. The end, close to the lens, of the rotating disc is provided with bristles, the bristles make contact with the lens, the right end of the rotating disc is fixedly connected with a handle, the protective cover is provided with a protective mechanism, and the rotating disc is provided with a connecting mechanism. According to the utility model, through the design of the shield, the lens can be protected, the lens can be effectively prevented from being collided and damaged, the lens can be protected from dust, the shield can be limited through the insertion of the insertion block and the insertion slot, and the shield and the connecting shell can be connected for use. The insertion block and the slot can be separated by rotating the knob, so that the shield can be conveniently detached, and the lens can be conveniently used.

Description

Technical Field

[0001] The utility model relates to the technical field of zoom lenses, in particular to a medium-wave infrared continuous zoom lens with a dustproof structure. Background Art

[0002] The utility model patent with patent authorization announcement number CN211478733U discloses a medium-wave infrared continuous zoom lens, which relates to the field of lens technology, including a lens main body base plate and a circuit board fixedly arranged on the side of the lens main body base plate, a front fixed lens is fixedly arranged at the front end of the lens main body base plate, a cam groove is arranged on the inner side of the lens main body base plate, a slider is arranged on the upper end of the cam groove, a magnification bracket is fixedly arranged at one end of the slider, a compensation bracket is fixedly arranged at the other end of the slider, and a magnification lens is fixedly arranged on the inner side of the magnification bracket. The utility model drives the corresponding magnification lens and the compensation lens to move back and forth along the slider, and the compensation motor drives the secondary imaging lens to move by driving the focusing ring to realize continuous zoom change of the lens, reduce the overall volume of the lens, make it more convenient to use, and improve the resolution, so that the lens can have high imaging quality, high spatial resolution, small volume and light weight.

[0003] In the prior art, it is inconvenient to protect the zoom lens during use, friction or collision can easily cause wear and even damage to the lens, and dust is more likely to accumulate on the lens when it is idle, which will affect subsequent use. Therefore, improvements are needed. Utility Model Content

[0004] The utility model aims to provide a medium-wave infrared continuous zoom lens with a dustproof structure, which solves the problem of inconvenient protection of the lens.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medium-wave infrared continuous zoom lens with a dust-proof structure, comprising a lens body, a connecting shell fixedly connected to the right end of the lens body, a lens arranged at the right end of the connecting shell, a protective cover slidingly sleeved on the outer side of the connecting shell, a turntable rotatably sleeved on the inner side of the protective cover, bristles arranged at one end of the turntable close to the lens, the bristles contacting the lens, a handle fixedly connected to the right end of the turntable, a protective mechanism arranged on the protective cover, and a connecting mechanism arranged on the turntable.

[0006] Preferably, the protection mechanism includes a slot, the connection shell has a slot inside, the slot has a plug block slidably sleeved inside, the plug block is slidably connected to the shield, the top of the plug block is fixedly connected to a connection block, the connection block is slidably connected to the shield, two symmetrically distributed balls are movably sleeved inside the connection block, the balls are slidably connected to the shield, the connection block has a screw rod threadedly connected inside, the screw rod is rotatably connected to the shield via a bearing, the top of the screw rod is fixedly connected to a knob, and the knob is in contact with the shield. By designing a protection mechanism, the lens can be protected.

[0007] Preferably, a guide groove is provided inside the shield, and a ball is slidably connected inside the guide groove. The guide groove is designed so that the ball can slide along the guide groove.

[0008] Preferably, the number of the plug blocks is two, and the two plug blocks are symmetrically distributed at the lower end of the connecting block. The shield can be fixed by designing the connection between the plug blocks and the slots.

[0009] Preferably, the connection mechanism includes an annular groove, the inside of the turntable is provided with an annular groove, the inside of the annular groove is slidably connected to a limit block, the end of the limit block away from the turntable is fixedly connected to a connecting rod, the connecting rod is slidably connected to the shield, the outside of the connecting rod is fixedly sleeved with a connecting sleeve, the connecting sleeve is slidably connected to the connecting shell, a spring is arranged on the outside of the connecting rod, the end of the connecting rod away from the limit block is fixedly connected to a pull block, and the pull block contacts the shield. By designing the connection mechanism, the turntable can be easily disassembled.

[0010] Preferably, one end of the spring is fixedly connected to the connecting sleeve, and the other end of the spring is fixedly connected to the shield. The spring is designed so that the force of the spring can act on the connecting sleeve.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model can protect the lens by designing the function of the protective cover, which can effectively prevent the lens from being damaged by collision, and can also protect the lens from dust. The protective cover can be limited by plugging the plug block into the slot, and then the protective cover can be connected to the connecting shell for use. The plug block and the slot can be separated by turning the knob, and the protective cover can be easily disassembled to facilitate the use of the lens.

[0013] 2. The utility model designs the functions of the turntable and the bristles. When the handle is turned to drive the turntable to rotate, the bristles can rotate along the lens. The lens can be easily cleaned after use to remove dust. The turntable can be easily disassembled to facilitate deep cleaning of the bristles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A front cross-sectional view of a local structure;

[0016] Figure 3 For this utility model Figure 2 A magnified image of point A;

[0017] Figure 4 For this utility model Figure 1 A three-dimensional cross-sectional view of the local structure;

[0018] Figure 5 For this utility model Figure 4 Enlarged view of point B.

[0019] In the figure: 1. lens body; 2. connecting shell; 3. lens; 4. protective cover; 5. turntable; 6. bristles; 7. handle; 8. protective mechanism; 9. connecting mechanism; 81. slot; 82. plug-in block; 83. connecting block; 84. ball bearing; 85. guide groove; 86. screw; 87. knob; 91. annular groove; 92. limit block; 93. connecting rod; 94. connecting sleeve; 95. spring; 96. pull block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 3 A medium-wave infrared continuous zoom lens with a dust-proof structure comprises a lens body 1, a connecting shell 2 is fixedly connected to the right end of the lens body 1, a lens 3 is arranged on the right end of the connecting shell 2, a protective cover 4 is slidably sleeved on the outer side of the connecting shell 2, a turntable 5 is rotatably sleeved inside the protective cover 4, a brush 6 is arranged on one end of the turntable 5 close to the lens 3, the brush 6 is in contact with the lens 3, a handle 7 is fixedly connected to the right end of the turntable 5, a protective mechanism 8 is arranged on the protective cover 4, and a connecting mechanism 9 is arranged on the turntable 5.

[0022] See also Figure 1 , Figure 2 , Figure 3The protective mechanism 8 includes a slot 81, and the slot 81 is provided inside the connecting shell 2. The slot 81 is slidably sleeved with an insert block 82 inside the slot 81. The insert block 82 is slidably connected to the shield 4. There are two insert blocks 82, and the two insert blocks 82 are symmetrically distributed at the lower end of the connecting block 83. The shield 4 can be fixed by designing the insertion of the insert block 82 and the slot 81. The top of the insert block 82 is fixedly connected with a connecting block 83, and the connecting block 83 is slidably connected to the shield 4. The internal movable sleeve of the connecting block 83 is two The balls 84 are symmetrically distributed and slidably connected to the shield 4. A guide groove 85 is provided inside the shield 4. The balls 84 are slidably connected inside the guide groove 85. The guide groove 85 is designed so that the balls 84 can slide along the guide groove 85. The inside of the connecting block 83 is threadedly connected with a screw 86. The screw 86 is rotatably connected to the shield 4 through a bearing. A knob 87 is fixedly connected to the top of the screw 86. The knob 87 is in contact with the shield 4. The lens 3 can be protected by designing a protective mechanism 8.

[0023] See also Figure 1 , Figure 4 , Figure 5 The connecting mechanism 9 includes an annular groove 91. An annular groove 91 is provided inside the turntable 5. The inside of the annular groove 91 is slidably connected to a limiting block 92. The end of the limiting block 92 away from the turntable 5 is fixedly connected to a connecting rod 93. The connecting rod 93 is slidably connected to the shield 4. The outer side of the connecting rod 93 is fixedly sleeved with a connecting sleeve 94. The connecting sleeve 94 is slidably connected to the connecting shell 2. A spring 95 is provided on the outer side of the connecting rod 93. One end of the spring 95 is fixedly connected to the connecting sleeve 94, and the other end of the spring 95 is fixedly connected to the shield 4. By designing the spring 95, the force of the spring 95 can act on the connecting sleeve 94. The end of the connecting rod 93 away from the limiting block 92 is fixedly connected to a pulling block 96. The pulling block 96 contacts the shield 4. By designing the connecting mechanism 9, the turntable 5 can be easily disassembled.

[0024] The specific implementation process of the utility model is as follows: when in use, the lens 3 can be protected by the protective cover 4, which can effectively prevent the lens 3 from being damaged by collision, and can also protect the lens 3 from dust. When it is necessary to disassemble the protective cover 4, the knob 87 is directly rotated, and the knob 87 drives the screw 86 to rotate, so that the connecting block 83 makes a threaded movement, and the connecting block 83 drives the ball 84 to slide along the guide groove 85. At the same time, the connecting block 83 drives the plug block 82 to move upward, so that the plug block 82 can be separated from the slot 81, and then the protective cover 4 is horizontally moved to remove the protective cover 4 from the connecting shell 2, and the protective cover 4 can be conveniently disassembled, which is convenient for using the lens 3. When it is necessary to clean the lens 3, the handle 7 is directly rotated, and the handle 7 drives the turntable 5 to rotate, and the turntable 5 and the limit block 92 rotate relatively, and at the same time, the turntable 5 drives the bristles 6 to rotate, and the bristles 6 rotate along the lens 3. After the lens 3 is used, the lens 3 can be conveniently cleaned to remove dust. When the turntable 5 needs to be disassembled, the pull block 96 is directly pulled horizontally. The pull block 96 drives the connecting rod 93 and the connecting sleeve 94 to move. The connecting sleeve 94 will squeeze the spring 95. At the same time, the connecting rod 93 drives the limit block 92 to move, so that the limit block 92 is separated from the annular groove 91, and then the handle 7 is pulled horizontally to remove the turntable 5 from the protective cover 4, which is convenient for disassembly of the turntable 5 and deep cleaning of the bristles 6.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medium-wave infrared continuous zoom lens with a dust-proof structure, comprising a lens body (1), characterized in that: The right end of the lens body (1) is fixedly connected to a connecting shell (2), the right end of the connecting shell (2) is provided with a lens (3), the outer side of the connecting shell (2) is slidably sleeved with a protective cover (4), the inner side of the protective cover (4) is rotatably sleeved with a turntable (5), the end of the turntable (5) close to the lens (3) is provided with bristles (6), the bristles (6) are in contact with the lens (3), the right end of the turntable (5) is fixedly connected to a handle (7), the protective cover (4) is provided with a protective mechanism (8), and the turntable (5) is provided with a connecting mechanism (9).

2. The medium-wave infrared continuous zoom lens with a dust-proof structure according to claim 1, characterized in that: The protection mechanism (8) comprises a slot (81), the connection shell (2) is provided with a slot (81), the slot (81) is slidably sleeved with an insert block (82) inside, the insert block (82) is slidably connected to the shield (4), the top of the insert block (82) is fixedly connected with a connecting block (83), the connecting block (83) is slidably connected to the shield (4), the inside of the connecting block (83) is movably sleeved with two symmetrically distributed balls (84), the balls (84) are slidably connected to the shield (4), the inside of the connecting block (83) is threadedly connected with a screw rod (86), the screw rod (86) is rotatably connected to the shield (4) through a bearing, the top of the screw rod (86) is fixedly connected with a knob (87), and the knob (87) is in contact with the shield (4).

3. The medium-wave infrared continuous zoom lens with a dust-proof structure according to claim 1, characterized in that: A guide groove (85) is provided inside the protective cover (4), and a ball (84) is slidably connected inside the guide groove (85).

4. The medium-wave infrared continuous zoom lens with a dust-proof structure according to claim 1, characterized in that: A guide groove (85) is provided inside the protective cover (4), and a ball (84) is slidably connected inside the guide groove (85).

5. The medium-wave infrared continuous zoom lens with a dust-proof structure according to claim 1, characterized in that: The connecting mechanism (9) comprises an annular groove (91), an annular groove (91) is provided inside the rotating disk (5), a limiting block (92) is slidably connected inside the annular groove (91), a connecting rod (93) is fixedly connected to one end of the limiting block (92) away from the rotating disk (5), the connecting rod (93) is slidably connected to the protective cover (4), a connecting sleeve (94) is fixedly sleeved on the outer side of the connecting rod (93), the connecting sleeve (94) is slidably connected to the connecting shell (2), a spring (95) is provided on the outer side of the connecting rod (93), and a pulling block (96) is fixedly connected to one end of the connecting rod (93) away from the limiting block (92), and the pulling block (96) is in contact with the protective cover (4).

6. The medium-wave infrared continuous zoom lens with a dust-proof structure according to claim 5, characterized in that: One end of the spring (95) is fixedly connected to the connecting sleeve (94), and the other end of the spring (95) is fixedly connected to the protective cover (4).

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