Optical lens thickness gauge

Abstract

The invention relates to the technical field of optical lenses, in particular to an optical lens thickness gauge which comprises a base and a thickness measuring probe, an air cylinder is fixedly installed at the bottom of an inner cavity of the base, the thickness measuring probe is fixedly installed at the upper end of an output shaft of the air cylinder, an annular positioning platform is fixedly installed in the base, and a plurality of movable seats are arranged in the annular positioning platform at equal intervals. Connecting blocks are fixedly installed on the upper side and the lower side of the outer wall face of the movable base respectively, supporting plates are rotationally installed between the connecting blocks and the fixed blocks and between the connecting blocks and the movable blocks, and a first threaded rod in threaded connection with the two movable blocks is rotationally installed between the two fixed blocks. Due to the fact that the multiple movable seats are arranged, optical lenses of various shapes can be clamped and positioned in cooperation with the positioning rods, the first positioning pieces and the second positioning pieces, all the movable seats can be driven to contract inwards or expand outwards through threaded connection between the first threaded rods and the movable blocks, and therefore the movable seats can be clamped and positioned conveniently. And lenses with various sizes can be positioned.

Description

Technical Field

[0001] This invention relates to the field of optical lens technology, and more particularly to an optical lens thickness gauge. Background Technology

[0002] With the rapid development of optical technology, various high-precision optical lenses have been widely used in key areas such as mobile phone camera modules, industrial lenses, and projection equipment. To ensure image quality, modern optical lenses have increasingly stringent requirements for processing precision, with center thickness tolerance often needing to be controlled at the micrometer level. This makes optical lens thickness gauges an indispensable testing device in the production process. However, current mainstream thickness gauges on the market have significant technical drawbacks: the lens fixing mechanism design has defects, making it prone to lens displacement or micro-slippage during measurement. Especially when measuring aspherical lenses with large radii of curvature, traditional vacuum adsorption or mechanical clamping methods are difficult to achieve uniform force, further amplifying measurement deviations.

[0003] For example, patent document CN221959485U discloses an optical lens thickness gauge. This device uses a clamping mechanism where a slider moves an L-shaped connecting rod, which in turn moves a sliding rod against the outer wall of a fixed column. The sliding rod then presses down a third connecting rod, causing a J-shaped connecting rod to pull the insert rod and sleeve. Simultaneously, the first connecting rod moves two clamping blocks closer together, allowing them to slide within a first groove. When the two clamping blocks press against the optical lens, a rubber pad prevents scratches, thus achieving the desired clamping effect. However, the device still has the following problems: the part inside the clamping block used to position the optical lens is usually fixed, which means that it can only position lenses of a single shape. However, existing optical lenses have a large variety of shapes. For example, there are rectangular lenses used in projector and scanner environments, and circular lenses used in camera lenses and microscope objectives. Moreover, the outer diameter of circular lenses used in different environments also varies greatly. This makes it difficult for the clamping block with a single structure to position lenses of different shapes. If the inner part of the clamping block is replaced according to the shape of the lens, there will be a waste of operation time. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the background art, and to propose an optical lens thickness gauge.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an optical lens thickness gauge, comprising a base and a thickness measuring probe, wherein a cylinder is fixedly installed at the bottom of the inner cavity of the base, the thickness measuring probe is fixedly installed at the upper end of the cylinder output shaft, an annular positioning platform is fixedly installed inside the base, and multiple movable seats are equally spaced inside the annular positioning platform, each movable seat having a positioning rod inserted into it, a first positioning plate is fixedly installed at the upper end of the movable seat, a second positioning plate is fixedly installed around the positioning rod, fixed blocks are fixedly installed on the upper and lower sides of the inner cavity of the annular positioning platform, movable blocks are fixedly installed between two fixed blocks, connecting blocks are fixedly installed on the upper and lower sides of the outer wall of the movable seat, a support plate is rotatably installed between the connecting block, the fixed block and the movable block, and a first threaded rod threadedly connected to the two movable blocks is rotatably installed between the two fixed blocks.

[0006] In the aforementioned optical lens thickness gauge, each of the first threaded rods has a first driven gear fixedly installed at its lower end, and a first toothed ring is rotatably installed inside the annular positioning platform. Each of the first driven gears is meshed with the inner wall of the first toothed ring.

[0007] In the aforementioned optical lens thickness gauge, a first drive motor is fixedly installed on the inner wall of the base, and a first drive gear is fixedly installed on the outer end of the first drive motor through its output shaft. A first gear ring is meshed with the outer periphery of the first drive gear.

[0008] In the aforementioned optical lens thickness gauge, the movable seat has an insertion cavity, a positioning rod is inserted into the insertion cavity, and a threaded hole is provided in the positioning rod. A third gear is rotatably installed on the lower side of the insertion cavity, and a second threaded rod that is threadedly connected to the threaded hole is fixedly installed on the upper end of the third gear.

[0009] In the aforementioned optical lens thickness gauge, an annular rotating seat is fixedly installed on the lower side of the annular positioning platform, and a first gear is rotatably installed on the inner side of the annular rotating seat. The number and position of the first gear and the third gear correspond to each other.

[0010] In the aforementioned optical lens thickness gauge, a second gear is provided on both sides between the corresponding first gear and third gear, and the first gear, third gear, and two second gears are interconnected by a synchronous belt.

[0011] In the aforementioned optical lens thickness gauge, a second gear ring is rotatably mounted on the upper end of the annular rotating seat and meshes with each of the first gears. A second drive motor is fixedly mounted on the inner wall of the base, and a second drive gear that meshes with the outer periphery of the second gear ring is fixedly mounted on the outer end of the second drive motor through its output shaft.

[0012] In the aforementioned optical lens thickness gauge, a limiting seat is fixedly installed on the inner wall of the annular rotating seat, a first gear is rotatably installed on the upper end of the limiting seat, and first connecting rings are rotatably installed on the upper and lower sides of the periphery of the limiting seat, and second connecting rings are fixedly installed on the periphery of the two first connecting rings through brackets, and two second gears are rotatably installed on the upper ends of the two second connecting rings respectively.

[0013] In the aforementioned optical lens thickness gauge, each of the two brackets has a movable sleeve rotatably installed inside, a limit rod is inserted between the two movable sleeves, and a spring sleeved around the limit rod is fixedly installed between the two movable sleeves.

[0014] Compared with existing technologies, the advantages of this optical lens thickness gauge are: I. This device has multiple movable seats, which, together with the positioning rod, the first positioning plate, and the second positioning plate, can clamp and position optical lenses of various shapes. Through the threaded connection between the first threaded rod and the movable block, each movable seat can be driven to retract inward or expand outward, so that the movable seats can position lenses of various sizes. Compared with the original device, this device does not require the installation and disassembly of the structure when positioning lenses of various shapes and sizes.

[0015] Second, this device, through the threaded connection between the second threaded rod and the positioning rod, can drive the positioning rod to move up and down, thereby adjusting the distance between the first positioning plate and the second positioning plate. This allows for the positioning of optical lenses of various thicknesses, further improving the performance of the device.

[0016] Third, this device is equipped with a second gear and a spring. When the movable seat drives the third gear to move, the first gear and the third gear are always connected to each other through the spring and the synchronous belt, so that the second drive motor can drive the positioning rod to move up and down through its output shaft. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of the base of the present invention; Figure 2 This is a schematic diagram of the internal structure of the base and movable seat of the present invention; Figure 3 This is a schematic diagram of the internal structure of the base of the present invention; Figure 4 This is a schematic diagram of the external structure of the movable seat of the present invention; Figure 5 This is a schematic diagram of the internal structure of the movable seat and the first threaded rod of the present invention; Figure 6 This is a schematic diagram of the internal disassembled structure of the movable seat and the second threaded rod of the present invention; Figure 7This is a schematic diagram of the external structure of the first gear, the second gear, and the third gear of the present invention; Figure 8 This is a schematic diagram of the external split structure of the bracket of the present invention.

[0018] In the picture: 1. Base; 11. Circular positioning platform; 12. Cylinder; 13. Thickness measuring probe; 2. Movable seat; 21. First positioning plate; 23. Second positioning plate; 24. Fixed block; 25. Movable block; 26. Connecting block; 27. Support plate; 28. First threaded rod; 281. First driven gear; 29. ​​First drive motor; 291. First drive gear; 292. First gear ring; 3. Insertion cavity; 30. Second drive motor; 301. Second drive gear; 31. Positioning rod; 32. Threaded hole; 33. Second threaded rod; 34. Third gear; 35. Annular rotating seat; 36. Second gear ring; 37. First gear; 38. Second gear; 39. Synchronous belt; 4. Limiting seat; 41. First connecting ring; 42. Bracket; 43. Second connecting ring; 44. Movable sleeve; 45. Limiting rod; 46. Spring. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Reference Figures 1-8An optical lens thickness gauge includes a base 1 and a thickness probe 13. A cylinder 12 is fixedly installed at the bottom of the inner cavity of the base 1. The thickness probe 13 is fixedly installed at the upper end of the output shaft of the cylinder 12. An annular positioning platform 11 is fixedly installed inside the base 1. Multiple movable seats 2 are equally spaced inside the annular positioning platform 11. A positioning rod 31 is inserted into each movable seat 2. A first positioning piece 21 is fixedly installed at the upper end of the movable seat 2. A second positioning piece 23 is fixedly installed around the positioning rod 31. Fixed blocks 24 are fixedly installed on the upper and lower sides of the inner cavity of the annular positioning platform 11. Movable blocks 25 are fixedly installed between the two fixed blocks 24. Connecting blocks 26 are fixedly installed on the upper and lower sides of the outer wall of the movable seat 2. A support plate 27 is rotatably installed between the connecting block 26, the fixed block 24, and the movable block 25. A first threaded rod 28, which is threadedly connected to the two movable blocks 25, is rotatably installed between the two fixed blocks 24.

[0022] Each of the first threaded rods 28 has a first driven gear 281 fixedly installed at its lower end. A first gear ring 292 is rotatably installed inside the annular positioning platform 11. Each of the first driven gears 281 is meshed with the inner wall of the first gear ring 292.

[0023] A first drive motor 29 is fixedly installed on the inner wall of the base 1. A first drive gear 291 is fixedly installed on the outer end of the first drive motor 29 through its output shaft. A first gear ring 292 is meshed with the outer periphery of the first drive gear 291.

[0024] The working principle and usage of this invention are explained in detail below: In use, the optical lens is placed in the middle of each positioning rod 31, and the first drive motor 29 is started. Through the meshing connection between its output shaft and the first gear ring 292 with the first drive gear 291 and the first driven gear 281, each first threaded rod 28 is driven to rotate. Since the connecting block 26 is rotatably connected to the fixed block 24 and the movable block 25 through the support plate 27, and the fixed block 24 is fixedly set, the movement direction of the movable block 25 can be restricted, so that the rotating first threaded rod 28 can drive the upper and lower movable blocks 25 to move in opposite directions through the threaded connection between it and the movable block 25. In conjunction with the support plate 27, the connecting block 26, and the fixed block 24, each movable seat 2 can be driven to retract inward, so that the corresponding positioning rod 31 fits against the outer periphery of the optical lens, thereby achieving the effect of positioning the lens.

[0025] The movable seat 2 has an insertion cavity 3, and the positioning rod 31 is inserted into the insertion cavity 3. The positioning rod 31 has a threaded hole 32. A third gear 34 is rotatably installed on the lower side of the insertion cavity 3. A second threaded rod 33 that is threadedly connected to the threaded hole 32 is fixedly installed on the upper end of the third gear 34.

[0026] An annular rotating seat 35 is fixedly installed on the lower side of the annular positioning platform 11. A first gear 37 is rotatably installed on the inner side of the annular rotating seat 35. The number and position of the first gear 37 and the third gear 34 correspond to each other.

[0027] A second gear 38 is provided on both sides between the corresponding first gear 37 and third gear 34. The first gear 37, third gear 34 and two second gears 38 are connected to each other by a synchronous belt 39.

[0028] A second gear ring 36 is rotatably mounted on the upper end of the annular rotating seat 35 and meshes with each of the first gears 37. A second drive motor 30 is fixedly mounted on the inner wall of the base 1. A second drive gear 301 that meshes with the outer periphery of the second gear ring 36 is fixedly mounted on the outer end of the second drive motor 30 through its output shaft.

[0029] A limiting seat 4 is fixedly installed on the inner wall of the annular rotating seat 35. The first gear 37 is rotatably installed on the upper end of the limiting seat 4. The upper and lower sides of the limiting seat 4 are respectively rotatably installed with first connecting rings 41. The outer sides of the two first connecting rings 41 are respectively fixedly installed with second connecting rings 43 through brackets 42. The two second gears 38 are respectively rotatably installed on the upper ends of the two second connecting rings 43.

[0030] Each of the two brackets 42 has a movable sleeve 44 rotatably installed inside it. A limit rod 45 is inserted between the two movable sleeves 44, and a spring 46 is fixedly installed between the two movable sleeves 44 and sleeved around the limit rod 45.

[0031] When the first drive motor 29 drives each movable seat 2 to retract inward or expand outward through its output shaft, it can drive the third gear 34 at the lower end of the movable seat 2 to move with it. During this process, in conjunction with the spring 46, through the rotational connection between the movable sleeve 44 and the bracket 42, the two brackets 42 can be pushed to expand outward, so that the synchronous belt 39 is always in contact with the outer periphery of the first gear 37, the third gear 34 and the two second gears 38, ensuring that the synchronous belt 39 is in a taut state. This starts the second drive motor 30, which, through its output shaft and the meshing connection between the second drive gear 301 and the first gear 37 via the second gear ring 36, drives the first gear 37 to move. In conjunction with the synchronous belt 39 and the second gear 38, it can drive the third gear 34 to rotate, which in turn drives the second threaded rod 33 to rotate. With the movable seat 2 connected to the positioning rod 31 via the insertion cavity 3, the movement direction of the positioning rod 31 is restricted, allowing the rotating second threaded rod 33 to drive the positioning rod 31 to move up and down through its threaded connection with the threaded hole 32. This achieves the effect of adjusting the distance between the first positioning piece 21 and the second positioning piece 23, thereby improving the positioning effect of the optical lens.

[0032] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An optical lens thickness gauge, comprising a base and a thickness probe, characterized in that: A cylinder is fixedly installed at the bottom of the inner cavity of the base. A thickness measuring probe is fixedly installed on the upper end of the cylinder output shaft. An annular positioning platform is fixedly installed inside the base. Multiple movable seats are evenly spaced inside the annular positioning platform. A positioning rod is inserted into each movable seat. A first positioning piece is fixedly installed on the upper end of the movable seat. A second positioning piece is fixedly installed around the positioning rod. Fixed blocks are fixedly installed on the upper and lower sides of the inner cavity of the annular positioning platform. Movable blocks are fixedly installed between two fixed blocks. Connecting blocks are fixedly installed on the upper and lower sides of the outer wall of the movable seat. A support plate is rotatably installed between the connecting block, the fixed block, and the movable block. A first threaded rod that is threadedly connected to the two movable blocks is rotatably installed between the two fixed blocks.

2. The optical lens thickness gauge according to claim 1, characterized in that: Each of the first threaded rods has a first driven gear fixedly installed at its lower end, and a first toothed ring is rotatably installed inside the annular positioning platform. Each of the first driven gears is meshed with the inner wall of the first toothed ring.

3. The optical lens thickness gauge according to claim 2, characterized in that: A first drive motor is fixedly installed on the inner wall of the base, and a first drive gear is fixedly installed on the outer end of the first drive motor through its output shaft. The first gear ring is meshed with the outer periphery of the first drive gear.

4. The optical lens thickness gauge according to claim 1, characterized in that: The movable seat has an insertion cavity, and the positioning rod is inserted into the insertion cavity. The positioning rod has a threaded hole. A third gear is rotatably installed on the lower side of the insertion cavity, and a second threaded rod that is threadedly connected to the threaded hole is fixedly installed on the upper end of the third gear.

5. The optical lens thickness gauge according to claim 4, characterized in that: An annular rotating seat is fixedly installed on the lower side of the annular positioning platform, and a first gear is rotatably installed on the inner side of the annular rotating seat. The number and position of the first gear and the third gear correspond to each other.

6. The optical lens thickness gauge according to claim 5, characterized in that: A second gear is provided on both sides between the first gear and the third gear, which correspond to each other. The first gear, the third gear, and the two second gears are connected to each other by a synchronous belt.

7. The optical lens thickness gauge according to claim 5, characterized in that: The upper end of the annular rotating seat is rotatably mounted with a second gear ring that meshes with each of the first gears. A second drive motor is fixedly mounted on the inner wall of the base. The outer end of the second drive motor is fixedly mounted with a second drive gear that meshes with the outer periphery of the second gear ring through its output shaft.

8. An optical lens thickness gauge according to claim 6, characterized in that: A limiting seat is fixedly installed on the inner wall of the annular rotating seat. A first gear is rotatably installed on the upper end of the limiting seat. First connecting rings are rotatably installed on the upper and lower sides of the periphery of the limiting seat. Second connecting rings are fixedly installed on the periphery of the two first connecting rings through brackets. Two second gears are rotatably installed on the upper ends of the two second connecting rings.

9. An optical lens thickness gauge according to claim 8, characterized in that: Each of the two brackets has a movable sleeve rotatably installed inside, a limit rod is inserted between the two movable sleeves, and a spring sleeved around the limit rod is fixedly installed between the two movable sleeves.

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