Parallel light divergence angle continuous adjusting lens

Abstract

The invention belongs to the technical field of parallel light lenses, and particularly relates to a parallel light divergence angle continuous adjusting lens which comprises an inner cylinder and an outer cylinder, the outer cylinder is rotatably connected to the outer side of the inner cylinder, a first objective lens is fixedly connected to the inner wall of the inner cylinder, a second objective lens is slidably connected to the inner wall of the inner cylinder, and a mounting ring is fixedly connected to the side wall of the second objective lens. Two rollers are rotatably connected to the side wall of the mounting ring, two straight grooves are formed in the side wall of the inner barrel, two inclined grooves are formed in the side wall of the outer barrel, the rollers extend into the straight grooves and the inclined grooves correspondingly, a supporting ring is rotatably connected to the end of the outer barrel, a transmission assembly is arranged on the supporting ring, annular grooves are formed in the side walls of the straight grooves, and the transmission assembly is arranged in the annular grooves. An air bag is arranged on the side wall of the annular groove. According to the invention, after the objective lens is adjusted, the air bag is inflated by using compressed air, so that the straight groove is blocked, dust and impurities are prevented from entering, and the objective lens and a light source are protected.

Description

Technical Field

[0001] The invention belongs to the technical field of parallel light lenses, and in particular relates to a parallel light divergence angle continuously adjustable lens. Background Art

[0002] A parallel light adjustment lens is an optical component used to generate, calibrate or adjust parallel light beams. It is often used in conjunction with collimators, lasers, imaging systems, etc. By adjusting the lens position, angle or optical parameters in the light path, it ensures that the outgoing light has strict parallelism, or corrects the incident non-parallel light to obtain parallel light.

[0003] By converting divergent light (such as light emitted by a point light source) into parallel light, or making precision adjustments to existing parallel light (such as eliminating tiny deflections and optimizing parallelism), the strict requirements for parallel light in scenarios such as optical measurement, imaging, and calibration can be met.

[0004] The traditional way of adjusting the lens partially adopts the cooperation between the oblique groove and the straight groove. When the oblique groove rotates, the objective lens can move along the straight groove to adjust the distance between two or more objective lenses. However, since the lens is often in an exposed state during use, a large gap will exist between the straight groove and the oblique groove during long-term use. The objective lens or light source is prone to static electricity and dust absorption during operation. Coupled with the effect of air flow, dust can easily enter the inner cylinder through the gap between the straight groove and the oblique groove and adhere to the surface of the objective lens, thereby affecting the parallelism of the parallel light. Summary of the Invention

[0005] The purpose of the present invention is to provide a lens with a continuously adjustable divergence angle of parallel light. After the objective lens is adjusted, compressed gas is used to inflate an air bag to seal the straight groove, thereby preventing dust and impurities from entering and protecting the objective lens and the light source.

[0006] The technical solutions adopted by the present invention are as follows:

[0007] A parallel light divergence angle continuously adjustable lens comprises an inner cylinder and an outer cylinder, the outer cylinder being rotatably connected to the outside of the inner cylinder, a first objective lens being fixedly connected to the inner wall of the inner cylinder, a second objective lens being slidably connected to the inner wall of the inner cylinder, a mounting ring being fixedly connected to the side wall of the second objective lens, two rollers being rotatably connected to the side wall of the mounting ring, two straight grooves being defined on the side wall of the inner cylinder, two oblique grooves being defined on the side wall of the outer cylinder, the rollers extending into the straight grooves and the oblique grooves respectively, a support ring being rotatably connected to the end of the outer cylinder, a transmission assembly being provided on the support ring, an annular groove being defined on the side wall of the straight groove, and an air bag being provided on the side wall of the annular groove;

[0008] The side wall of the support ring is fixedly connected with a mounting plate, and the side wall of the mounting plate is provided with an inflation component.

[0009] Furthermore, the transmission assembly includes a support fixedly connected to the side wall of the support ring, a motor is installed on the side wall of the support, a large gear is fixedly connected to the output end of the motor, and an annular rack is fixedly connected to the side wall of the outer cylinder. The large gear is meshed with the annular rack, and a linkage assembly is arranged between the transmission assembly and the inflation assembly.

[0010] Furthermore, the inflation component includes an impeller housing fixedly connected to the side wall of the mounting plate, an impeller body is rotatably connected in the impeller housing, the side wall of the mounting plate is rotatably connected to a rotating shaft, one end of the rotating shaft extends to the inner cavity of the impeller housing and is fixedly connected to the impeller body, the side wall of the impeller housing is fixedly provided with an air inlet pipe and an air outlet pipe, the end of the air outlet pipe is fixedly connected to a guide pipe, the side wall of the mounting plate is fixedly connected to a micro pressure tank, the other end of the guide pipe is connected to the micro pressure tank, the side wall of the micro pressure tank is fixedly connected to an inflation pipe, and the other end of the inflation pipe is connected to the annular groove.

[0011] Furthermore, a one-way valve is installed on the side wall of the flow guide pipe.

[0012] Furthermore, a press valve is installed on the side wall of the inflation tube.

[0013] Furthermore, the linkage assembly includes a transmission shaft rotatably connected to the side wall of the support, the side wall of the transmission shaft is fixedly connected with a small gear and a first groove wheel, the small gear is engaged with the large gear, the side wall of the rotating shaft is fixedly connected with a second groove wheel, and a belt is connected between the first groove wheel and the second groove wheel.

[0014] Furthermore, the side wall of the mounting plate is equipped with a protective shell.

[0015] Furthermore, the airbag is located inside the annular groove in an uninflated state.

[0016] The technical effects achieved by the present invention are:

[0017] The parallel light divergence angle continuously adjustable lens of the present invention cooperates with each other among a transmission component, a linkage component, an inflation component and an air bag. After the objective lens is adjusted, the air bag can be inflated with compressed gas to seal the straight groove, prevent dust and impurities from entering, and protect the objective lens and the light source. In addition, the generation of compressed gas does not require additional driving. During the process of adjusting the objective lens, the motor can inject the gas into a micro pressure tank for storage through the linkage component, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the present invention;

[0019] Figure 2 It is a partial structural schematic diagram of the present invention;

[0020] Figure 3 It is a schematic diagram of the partial split structure of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the outer cylinder of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the inner cylinder of the present invention;

[0023] Figure 6 It is a schematic cross-sectional structural diagram of the inner cylinder of the present invention;

[0024] Figure 7 It is a side structural schematic diagram of the present invention;

[0025] Figure 8 It is a structural diagram of the linkage assembly of the present invention;

[0026] Figure 9 This invention Figure 6 A magnified view of point A in the figure;

[0027] Figure 10 This invention Figure 7 Enlarged view of point B in .

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Inner tube; 2. Outer tube; 3. First objective lens; 4. Second objective lens; 5. Mounting ring; 6. Roller; 7. Straight groove; 8. Inclined groove; 9. Support; 10. Motor; 11. Large gear; 12. Annular rack; 13. Annular groove; 14. Air bag; 15. Mounting plate; 16. Impeller housing; 17. Impeller body; 18. Rotating shaft; 19. Micro pressure tank; 20. Flow guide tube; 21. One-way valve; 22. Inflation tube; 23. Press valve; 24. Transmission shaft; 25. Pinion; 26. First sheave; 27. Second sheave; 28. Belt; 29. ​​Protective shell. DETAILED DESCRIPTION

[0030] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0031] like Figures 1-10As shown, the parallel light divergence angle continuously adjustable lens comprises an inner cylinder 1 and an outer cylinder 2, the outer cylinder 2 is rotatably connected to the outside of the inner cylinder 1, a first objective lens 3 is fixedly connected to the inner wall of the inner cylinder 1, a second objective lens 4 (which may also be a light source structure) is slidably connected to the inner wall of the inner cylinder 1, a mounting ring 5 is fixedly connected to the side wall of the second objective lens 4, two rollers 6 are rotatably connected to the side wall of the mounting ring 5, two straight grooves 7 are provided on the side wall of the inner cylinder 1, two oblique grooves 8 are provided on the side wall of the outer cylinder 2, the rollers 6 extend into the straight groove 7 and the oblique groove 8 respectively, the above structure belongs to the existing mature technology and will not be described in detail in this scheme, a support ring is rotatably connected to the end of the outer cylinder 2, a transmission assembly is provided on the support ring, an annular groove 13 is provided on the side wall of the straight groove 7, and an air bag 14 is provided on the side wall of the annular groove 13;

[0032] The side wall of the support ring is fixedly connected with a mounting plate 15 , and the side wall of the mounting plate 15 is provided with an inflation component.

[0033] like Figure 1 As shown, the transmission assembly includes a support 9 fixedly connected to the side wall of the support ring, a motor 10 is installed on the side wall of the support 9, a large gear 11 is fixedly connected to the output end of the motor 10, and an annular rack 12 is fixedly connected to the side wall of the outer cylinder 2. The large gear 11 is meshed with the annular rack 12, and a linkage assembly is provided between the transmission assembly and the inflation assembly.

[0034] Among them, when it is necessary to adjust the position of the second objective lens 4, the motor 10 drives the large gear 11 to rotate, and the large gear 11 engages the annular rack 12, thereby driving the outer cylinder 2 to rotate along the center line of the annular rack 12, and the inclined groove 8 on the surface of the outer cylinder 2 is distributed along the arc surface of the outer cylinder 2. Therefore, the inclined surface of the inclined groove 8 can be used to push the roller 6 to move in the straight groove 7 to achieve the purpose of adjustment.

[0035] The emphasis of the present invention is: Figure 7 and Figure 10 As shown, the inflation assembly includes an impeller housing 16 fixedly connected to the side wall of the mounting plate 15, an impeller body 17 is rotatably connected to the impeller housing 16, a rotating shaft 18 is rotatably connected to the side wall of the mounting plate 15, one end of the rotating shaft 18 extends to the inner cavity of the impeller housing 16 and is fixedly connected to the impeller body 17, an air inlet pipe and an air outlet pipe are fixedly provided on the side wall of the impeller housing 16, a guide pipe 20 is fixedly connected to the end of the air outlet pipe, a micro pressure tank 19 is fixedly connected to the side wall of the mounting plate 15, the other end of the guide pipe 20 is connected to the micro pressure tank 19, an inflation pipe 22 is fixedly connected to the side wall of the micro pressure tank 19, and the other end of the inflation pipe 22 is connected to the annular groove 13. Figure 10 As shown, a one-way valve 21 is installed on the side wall of the flow guide pipe 20.

[0036] Specifically, the impeller body 17 and the impeller housing 16 form a fan structure. During the rotation of the impeller body 17, air flow is injected into the air inlet pipe. After the air flow is pushed between the impeller bodies 17, when the air flow is connected to the air outlet pipe, the impact force of the air flow can be used to push open the one-way valve 21, so that the air flow is injected into the micro pressure tank 19. After the air flow is gathered in the micro pressure tank 19, it forms pressurized gas, and is used in conjunction with the one-way valve 21, so that the air flow can only enter the micro pressure tank 19, and cannot be discharged from the micro pressure tank 19, thereby realizing the effect of one-way air supply.

[0037] like Figure 10 As shown, a press valve 23 is installed on the side wall of the inflation tube 22. The press valve 23 can be replaced with an electric valve according to actual needs;

[0038] Furthermore, when the second objective lens 4 is adjusted, the roller 6 is located at the corresponding position in the straight groove 7. At this time, the operator can press the pressing valve 23 to connect the inflation tube 22 with the micro pressure tank 19. The compressed gas inside the micro pressure tank 19 is quickly filled into the annular groove 13 through the inflation tube 22, inflating the airbag 14, causing the airbag 14 to expand and fill the interior of the straight groove 7.

[0039] Since the airbag 14 is made of a flexible elastic material, the airbag 14 can adapt to the shape of the roller 6, narrowing the gap between the roller 6 and the straight groove 7, and effectively isolating dust and impurities;

[0040] In addition, in order to further improve the stability of the second objective lens 4, when the airbag 14 is inflated, the current position of the roller 6 is squeezed, so that the roller 6 cannot be displaced. When the position of the second objective lens 4 is adjusted next time, the gas inside the airbag 14 needs to be released before adjustment can be made; in addition, a pressure relief valve is also provided on the inflation tube 22. Since the application of the pressure relief valve on the airbag 14 belongs to the existing conventional technology, it will not be described in detail in this solution.

[0041] like Figure 8 As shown, the linkage assembly includes a transmission shaft 24 rotatably connected to the side wall of the support 9, a small gear 25 and a first groove wheel 26 are fixedly connected to the side wall of the transmission shaft 24, the small gear 25 is engaged with the large gear 11, and a second groove wheel 27 is fixedly connected to the side wall of the rotating shaft 18, and a belt 28 is connected between the first groove wheel 26 and the second groove wheel 27 for transmission.

[0042] Specifically, the meshing of large gear 11 with small gear 25 is a speed-increasing transmission (small gear 25 rotates at a higher speed than large gear 11), which converts the low-speed rotation of motor 10 or the primary power source into high-speed rotation of small gear 25. This high-speed motion is then transmitted to impeller body 17 via first sheave 26, second sheave 27, and belt 28. The compression efficiency of impeller body 17 (i.e., the amount of air injected into micro-pressure tank 19 per unit time) is directly related to the rotation speed. High-speed rotation can significantly increase the airflow compression speed and shorten the time it takes for micro-pressure tank 19 to reach the target pressure. This is particularly suitable for scenarios where micro-pressure tank 19 has a small volume and needs to quickly build pressure.

[0043] In addition, the meshing of the large gear 11 and the small gear 25 is a rigid transmission with a small transmission gap and fast response, which can accurately transmit power and avoid power lag; and the subsequent belt 28 transmission is a flexible transmission, which can buffer the tiny vibrations of the impeller body 17 during high-speed rotation (such as high-frequency vibrations of gear meshing), reduce the speed fluctuations of the impeller body 17 caused by mechanical vibration, and thus ensure the stability of the injected airflow (airflow fluctuations will cause the pressure in the micro pressure tank 19 to be unstable, affecting the accuracy of use).

[0044] The combination of gear meshing and belt 28 transmission can flexibly arrange the transmission path (such as vertical or horizontal transmission) by changing the diameter and center distance of the gear / sheave, avoiding a bloated structure, and is suitable for the compact design requirements of the micro pressure tank 19 and supporting equipment (micro equipment has strict space restrictions and cannot accommodate large transmission components).

[0045] like Figure 1 As shown, a protective cover 29 is installed on the side wall of the mounting plate 15. The protective cover 29 is used to protect the first sheave 26, the second sheave 27 and the belt 28, preventing the transmission components from being exposed and posing a safety hazard to the operator during use. The connection between the protective cover 29 and the mounting plate 15 is preferably a bolt connection to facilitate later disassembly and maintenance of the transmission components.

[0046] like Figure 9 As shown, the airbag 14 is located inside the annular groove 13 in an uninflated state. With this design, friction between the roller 6 and the airbag 14 during movement can be avoided, which would affect the service life of the airbag 14.

[0047] The working principle of the present invention is as follows: when the position of the second objective lens 4 needs to be adjusted, the motor 10 is started, the output shaft of the motor 10 drives the large gear 11 to rotate, the large gear 11 engages the annular rack 12 and drives the outer cylinder 2 to rotate, the inclined groove 8 on the outer cylinder 2 is used to push the roller 6 to move along the straight groove 7, and the roller 6 drives the second objective lens 4 to move through the mounting ring 5, thereby achieving the position adjustment of the second objective lens 4;

[0048] At the same time, the large gear 11 engages the small gear 25 and drives the transmission shaft 24 to rotate. The transmission shaft 24 drives the first sheave 26 to rotate. The first sheave 26 drives the second sheave 27 to rotate through the belt 28. The second sheave 27 drives the impeller body 17 to rotate through the rotating shaft 18, which is used to introduce external air into the impeller housing 16 and then discharge the air into the guide pipe 20 through the air outlet pipe. At the same time, the one-way valve 21 opens, and the air flows into the micro pressure tank 19 to store the gas to form compressed gas.

[0049] After the second objective lens 4 is adjusted, the compressed gas is released into the inflation tube 22 by pressing the valve 23, so that the compressed gas fills the annular groove 13, and the airbag 14 begins to expand to fill the straight groove 7 and seal the gap to prevent dust from entering the inner tube 1 and affecting the parallelism of the parallel light.

[0050] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A parallel light divergence angle continuously adjustable lens, comprising an inner cylinder (1) and an outer cylinder (2), wherein the outer cylinder (2) is rotatably connected to the outside of the inner cylinder (1), a first objective lens (3) is fixedly connected to the inner wall of the inner cylinder (1), a second objective lens (4) is slidably connected to the inner wall of the inner cylinder (1), a mounting ring (5) is fixedly connected to the side wall of the second objective lens (4), and two rollers (6) are rotatably connected to the side wall of the mounting ring (5), two straight grooves (7) are provided on the side wall of the inner cylinder (1), and two oblique grooves (8) are provided on the side wall of the outer cylinder (2), and the rollers (6) extend into the straight groove (7) and the oblique groove (8), respectively, and the invention is characterized in that: The end of the outer cylinder (2) is rotatably connected to a support ring, a transmission assembly is provided on the support ring, a side wall of the straight groove (7) is provided with an annular groove (13), and a side wall of the annular groove (13) is provided with an air bag (14); The side wall of the support ring is fixedly connected to a mounting plate (15), and the side wall of the mounting plate (15) is provided with an inflation component.

2. The parallel light divergence angle continuously adjustable lens according to claim 1, characterized in that: The transmission assembly comprises a support (9) fixedly connected to the side wall of the support ring, a motor (10) is installed on the side wall of the support (9), a large gear (11) is fixedly connected to the output end of the motor (10), an annular rack (12) is fixedly connected to the side wall of the outer cylinder (2), the large gear (11) is meshed with the annular rack (12), and a linkage assembly is provided between the transmission assembly and the inflation assembly.

3. The parallel light divergence angle continuously adjustable lens according to claim 2, characterized in that: The inflation component comprises an impeller housing (16) fixedly connected to the side wall of the mounting plate (15), an impeller body (17) being rotatably connected in the impeller housing (16), a rotating shaft (18) being rotatably connected to the side wall of the mounting plate (15), one end of the rotating shaft (18) extending to the inner cavity of the impeller housing (16) and being fixedly connected to the impeller body (17), an air inlet pipe and an air outlet pipe being fixedly provided on the side wall of the impeller housing (16), a guide pipe (20) being fixedly connected to the end of the air outlet pipe, a micro pressure tank (19) being fixedly connected to the side wall of the mounting plate (15), the other end of the guide pipe (20) being communicated with the micro pressure tank (19), an inflation pipe (22) being fixedly connected to the side wall of the micro pressure tank (19), the other end of the inflation pipe (22) being communicated with the annular groove (13).

4. The parallel light divergence angle continuously adjustable lens according to claim 3, characterized in that: A one-way valve (21) is installed on the side wall of the flow guide pipe (20).

5. The parallel light divergence angle continuously adjustable lens according to claim 3, characterized in that: A pressing valve (23) is installed on the side wall of the inflation tube (22).

6. The parallel light divergence angle continuously adjustable lens according to claim 3, characterized in that: The linkage assembly comprises a transmission shaft (24) rotatably connected to the side wall of the support (9); a small gear (25) and a first sheave (26) are fixedly connected to the side wall of the transmission shaft (24); the small gear (25) is meshed with the large gear (11); a second sheave (27) is fixedly connected to the side wall of the rotating shaft (18); and a belt (28) is connected between the first sheave (26) and the second sheave (27) for transmission.

7. The parallel light divergence angle continuously adjustable lens according to claim 1, characterized in that: The side wall of the mounting plate (15) is equipped with a protective shell (29).

8. The parallel light divergence angle continuously adjustable lens according to claim 1, characterized in that: The air bag (14) is located inside the annular groove (13) in an uninflated state.

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