Dual-drive type middle wave infrared continuous zoom lens

Abstract

The utility model discloses a kind of double-drive type middle wave infrared continuous zoom lens, belong to infrared continuous zoom lens technical field, comprising: lens barrel, multiple waist type grooves are opened on it;Zoom mechanism, it is sleeved on the lens barrel;Two drivers, it is fixedly connected on the lens barrel, and two the driver connection and drive zoom mechanism;Multiple lens fixing mechanisms, it is slidably connected inside the lens barrel, and multiple the lens fixing mechanism is connected zoom mechanism by pin, multiple the pin respectively pass through multiple the waist type groove;The utility model rotates by driver drive zoom mechanism, under the transmission effect of pin, lens fixing mechanism slides along the inside of lens barrel, and then realizes continuous zoom, zoom mechanism assembly structure design can change the quantity and specification of times curve groove according to specific use, solve the problem that times tube can only be dedicated to special machine, so that times tube is used flexible, and it is strong in versatility.

Description

Technical Field

[0001] This utility model belongs to the field of infrared continuous zoom lens technology, and particularly relates to a dual-drive mid-wave infrared continuous zoom lens. Background Technology

[0002] A mid-wave infrared continuous zoom lens is an optical device that combines mid-wave infrared imaging technology with continuous zoom functionality. It is mainly used to capture and process infrared light with wavelengths in the range of 3-5μm, enabling clear observation and dynamic tracking of targets.

[0003] Chinese patent (CN201711332492.4) discloses a high-precision continuous zoom lens based on hyperbolic grooves, belonging to the field of optoelectronic technology. It includes a lens tube with an objective lens group, a zoom group, and a compensation group arranged in sequence, and a zoom tube with the zoom group and compensation group coaxially arranged on the outer periphery of the lens tube. By opening two zoom curve grooves and two compensation curve grooves on the zoom tube, and opening zoom straight grooves on the lens tube in contrast to the zoom curve grooves and compensation curve grooves, a pin group is set to pass through the curve grooves and straight grooves and match and connect with the zoom group and compensation group. The rotation of the zoom tube causes the pin group to move continuously in the curve grooves, thereby realizing the continuous zoom of the continuous zoom lens.

[0004] Currently, the compensation curve groove, magnification curve groove, and magnification teeth of the variable magnification tube are manufactured as a single piece. As a result, the variable magnification tube can only be used on a dedicated machine, which makes the variable magnification tube less flexible and versatile in use. Utility Model Content

[0005] The purpose of this invention is to provide a dual-drive mid-wave infrared continuous zoom lens in order to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a dual-drive mid-wave infrared continuous zoom lens, comprising:

[0007] The lens barrel has multiple waist-shaped grooves on it;

[0008] A zoom mechanism, which is mounted on the lens barrel;

[0009] Two actuators are fixedly connected to the lens barrel, and the two actuators are connected to drive the zoom mechanism;

[0010] Multiple lens fixing mechanisms are slidably connected inside the lens barrel, and the multiple lens fixing mechanisms are connected to the zoom mechanism by pins, with multiple pins passing through multiple waist-shaped grooves respectively;

[0011] A protective goggle mounting plate is fixedly connected to the end of the goggle tube, and a protective lens is mounted on the protective goggle mounting plate.

[0012] As a further description of the above technical solution:

[0013] The zoom mechanism includes a front support ring, a rear support ring, and multiple zoom guide plates. The front and rear support rings are both connected to the lens barrel via bearings. The rear support ring is provided with an annular rack. Both of the two drivers are connected to drive gears, and both drive gears mesh with the annular rack. The two ends of the multiple zoom guide plates are respectively connected to the front and rear support rings. The zoom guide plates are provided with curved grooves, and pins are inserted into the curved grooves, with each pin corresponding to a specific curved groove.

[0014] As a further description of the above technical solution:

[0015] The zoom guide plate is an arc-shaped plate, and the axes of multiple zoom guide plates coincide. The zoom guide plates are connected to the front support ring and the rear support ring by multiple bolts.

[0016] As a further description of the above technical solution:

[0017] The diameter of the pin is the same as the width of the waist-shaped groove.

[0018] As a further description of the above technical solution:

[0019] The lens fixing mechanism includes a bracket and a lens body. The bracket abuts against the inner wall of the lens barrel, the pin is connected to the bracket, and the lens body is fixedly connected to the bracket.

[0020] As a further description of the above technical solution:

[0021] A flange seat is provided on the lens barrel.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] 1. In this utility model, the zoom mechanism is driven to rotate by a driver, and the lens fixing mechanism slides along the inside of the lens barrel under the transmission action of the pin, thereby realizing continuous zoom. The zoom mechanism has an assembled structure design, which can change the number and specifications of the magnification curve groove according to the specific use, solving the problem that the zoom tube can only be used in a special machine, making the zoom tube more flexible and versatile.

[0024] 2. In this utility model, the bearings provide support for the rotation of the front support ring and the rear support ring. The driver rotates, which drives the drive gear to rotate. The drive gear rotates the ring rack that meshes with it, which in turn drives the front support ring, the rear support ring and the multiple zoom guide plates to rotate together. The movement of the zoom guide plates causes the curved groove to act as a pin, which then slides along the waist-shaped groove to act as a lens fixing mechanism to slide within the lens barrel to complete the continuous zoom action.

[0025] 3. In this utility model, with the front support ring and the rear support ring unchanged, different numbers and structures of zoom guide plates can be installed according to the zoom usage requirements and the number of lens fixing mechanisms that need to be adjusted. This solves the problem that zoom tubes can only be used on dedicated machines, making the zoom tubes more flexible and versatile in use. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of a dual-drive mid-wave infrared continuous zoom lens. Figure 1 .

[0027] Figure 2 for Figure 1 The usage status is shown in the diagram.

[0028] Figure 3 A schematic diagram of the overall structure of a dual-drive mid-wave infrared continuous zoom lens. Figure 2 .

[0029] Figure 4 for Figure 3 The usage status is shown in the diagram.

[0030] Figure 5 This is a cross-sectional view of a dual-drive mid-wave infrared continuous zoom lens.

[0031] Figure 6 for Figure 5 The usage status is shown in the diagram.

[0032] Figure 7 An exploded view of a dual-drive mid-wave infrared continuous zoom lens.

[0033] Legend:

[0034] 1. Lens barrel; 2. Waist-shaped groove; 3. Magnification mechanism; 31. Front support ring; 32. Rear support ring; 33. Magnification guide plate; 4. Driver; 5. Lens fixing mechanism; 51. Bracket; 52. Lens body; 6. Pin; 7. Protective goggle fixing plate; 8. Protective lens; 9. Bearing; 10. Ring rack; 11. Drive gear; 12. Curved groove; 13. Bolt; 14. Flange seat. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-7 This utility model provides a technical solution: a dual-drive mid-wave infrared continuous zoom lens, comprising:

[0037] The lens barrel 1 has multiple waist-shaped grooves 2 on it;

[0038] The zoom mechanism 3 is sleeved on the lens barrel 1;

[0039] Two actuators 4 are fixedly connected to the lens barrel 1, and the two actuators 4 are connected to drive the zoom mechanism 3;

[0040] Multiple lens fixing mechanisms 5 are slidably connected inside the lens barrel 1, and the multiple lens fixing mechanisms 5 are connected to the zoom mechanism 3 by pins 6, with multiple pins 6 passing through multiple waist-shaped grooves 2 respectively.

[0041] A protective goggle fixing plate 7 is fixedly connected to the end of the goggle tube 1, and a protective lens 8 is installed on the protective goggle fixing plate 7;

[0042] The zoom mechanism 3 includes a front support ring 31, a rear support ring 32, and multiple zoom guide plates 33. Both the front support ring 31 and the rear support ring 32 are connected to the lens barrel 1 via bearings 9. The rear support ring 32 is provided with an annular rack 10. Two drive gears 11 are connected to the two drivers 4, and both drive gears 11 mesh with the annular rack 10. The two ends of the multiple zoom guide plates 33 are respectively connected to the front support ring 31 and the rear support ring 32. Curved grooves 12 are formed on the zoom guide plates 33, and pins 6 are inserted into the curved grooves 12, with each pin 6 corresponding to a specific curved groove 12. The bearings 9 control the rotation of the front support ring 31 and the rear support ring 32. The drive unit 4 has a supporting function. The rotation of the drive unit 4 drives the drive gear 11 to rotate. The drive gear 11 rotates the ring rack 10 that meshes with it, which in turn drives the front support ring 31, the rear support ring 32 and the multiple zoom guide plates 33 to rotate together. The movement of the zoom guide plates 33 causes the curved groove 12 to act on the pin 6, which in turn causes the pin 6 to slide along the waist groove 2, so that the lens fixing mechanism 5 slides in the lens barrel 1 to complete the continuous zoom action. With the front support ring 31 and the rear support ring 32 unchanged, different numbers and different structures of zoom guide plates 33 can be installed according to the zoom usage requirements and the number of lens fixing mechanisms 5 that need to be adjusted. This solves the problem that zoom tubes can only be used in special machines, making the zoom tube more flexible and versatile in use.

[0043] The zoom guide plate 33 is an arc-shaped plate, and the axes of multiple zoom guide plates 33 coincide. The zoom guide plate 33 is connected to the front support ring 31 and the rear support ring 32 by multiple bolts 13. The quick disassembly and assembly characteristics of the bolts 13 facilitate the rapid expansion and installation of the zoom guide plate 33 on the front support ring 31 and the rear support ring 32.

[0044] The diameter of the pin 6 is the same as the width of the waist-shaped groove 2. The waist-shaped groove 2 provides guidance and support for the pin 6. The pin 6 abuts against the inner wall of the waist-shaped groove 2, which helps the lens fixing mechanism 5 to slide stably in a straight line inside the lens barrel 1.

[0045] The lens fixing mechanism 5 includes a bracket 51 and a lens body 52. ​​The bracket 51 abuts against the inner wall of the lens barrel 1. The pin 6 is connected to the bracket 51. The lens body 52 is fixedly connected to the bracket 51. The inner wall of the lens barrel 1 has a guiding and supporting effect on the bracket 51, which is conducive to the stable sliding of the bracket 51 in the lens barrel 1, thereby adjusting the position of the lens body 52.

[0046] The lens barrel 1 is provided with a flange seat 14 to facilitate the connection between the lens barrel 1 and the detector.

[0047] Working principle: First, when the lens is used for continuous zoom, the driver 4 rotates, which drives the drive gear 11 to rotate. The drive gear 11 rotates the ring rack 10 that meshes with it, which in turn drives the front support ring 31, the rear support ring 32 and the multiple zoom guide plates 33 to rotate together. Second, the movement of the zoom guide plates 33 causes the curved groove 12 to act on the pin 6, which in turn causes the pin 6 to slide along the waist groove 2, thereby causing the bracket 51 to slide along the inside of the lens barrel 1, and causing the lens fixing mechanism 5 to slide inside the lens barrel 1 to complete the continuous zoom action. Finally, by taking advantage of the quick-release and installation characteristics of the bolt 13, different numbers and structures of zoom guide plates 33 can be installed according to the zoom requirements and the number of brackets 51 that need to be adjusted.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dual-drive mid-wave infrared continuous zoom lens, characterized in that: include: The lens tube (1) has multiple waist-shaped grooves (2) on it; A zoom mechanism (3) is fitted onto the lens barrel (1); Two actuators (4) are fixedly connected to the lens barrel (1), and the two actuators (4) are connected and drive the zoom mechanism (3); Multiple lens fixing mechanisms (5) are slidably connected inside the lens barrel (1), and the multiple lens fixing mechanisms (5) are connected to the zoom mechanism (3) by pins (6), and the multiple pins (6) pass through multiple waist-shaped grooves (2) respectively. A protective goggle fixing plate (7) is fixedly connected to the end of the goggle tube (1), and a protective lens (8) is installed on the protective goggle fixing plate (7).

2. The dual-drive mid-wave infrared continuous zoom lens according to claim 1, characterized in that, The zoom mechanism (3) includes a front support ring (31), a rear support ring (32), and multiple zoom guide plates (33). The front support ring (31) and the rear support ring (32) are both connected to the lens barrel (1) via bearings (9). The rear support ring (32) is provided with an annular rack (10). Both drivers (4) are connected with drive gears (11), and both drive gears (11) mesh with the annular rack (10). The two ends of the multiple zoom guide plates (33) are respectively connected to the front support ring (31) and the rear support ring (32). The zoom guide plates (33) are provided with curved grooves (12), and pins (6) are inserted into the curved grooves (12), with each pin (6) corresponding to a one-to-one curve groove (12).

3. The dual-drive mid-wave infrared continuous zoom lens according to claim 2, characterized in that, The zoom guide plate (33) is an arc-shaped plate, and the axes of multiple zoom guide plates (33) coincide. The zoom guide plate (33) is connected to the front support ring (31) and the rear support ring (32) by multiple bolts (13).

4. A dual-drive mid-wave infrared continuous zoom lens according to claim 3, characterized in that, The diameter of the pin (6) is the same as the width of the waist-shaped groove (2).

5. A dual-drive mid-wave infrared continuous zoom lens according to claim 1, characterized in that, The lens fixing mechanism (5) includes a bracket (51) and a lens body (52). The bracket (51) abuts against the inner wall of the lens barrel (1). The pin (6) is connected to the bracket (51). The lens body (52) is fixedly connected to the bracket (51).

6. A dual-drive mid-wave infrared continuous zoom lens according to claim 1, characterized in that, A flange seat (14) is provided on the lens tube (1).

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