Lens multi-aperture lossless measuring device

Abstract

The utility model belongs to the field of lens measurement, particularly relates to a multi-aperture lossless measuring device for a lens, and provides the following scheme aiming at the existing problems: the multi-aperture lossless measuring device comprises a bottom plate, a fixing mechanism and a control module, a support is fixedly connected to the bottom plate, a fixing mechanism is arranged on the support, a lens is arranged on the fixing mechanism, an optical probe and an imaging camera are arranged on the support and the bottom plate respectively, the optical probe and the imaging camera both correspond to the lens, and a control module is arranged on the bottom plate. The fixing mechanism, the optical probe and the imaging camera are all connected with the control module; the fixing mechanism comprises a circular plate, a limiting assembly, a motor, a first bevel gear and a bevel gear ring. According to the utility model, through the cooperation of all the parts, not only can the effect of automatically fixing and automatically and accurately positioning the lens be realized, but also the effect of fixing the lenses with different calibers can be better realized.

Description

Technical Field

[0001] This utility model relates to the field of lens measurement technology, and in particular to a non-destructive measurement device for multi-aperture lenses. Background Technology

[0002] As a high-precision optical product, cameras have strict requirements for lens tolerances. The optical axis deflection, radial offset, and axial clearance of the lens need to be precisely adjusted according to the lens center thickness. Whether the manufacturing process meets the precision requirements requires inspection and measurement using high-precision instruments. A common method for measuring lens thickness is using a confocal optical system. This system focuses incident polychromatic light along the optical axis according to wavelength, simultaneously generating axial chromatic aberration. The measurement range is the distance between the focal points of the shortest and longest wavelengths.

[0003] In existing technologies, finding the maximum thickness of a lens requires multiple movements of the lens clamp, resulting in low efficiency in locating the lens center point. To address this issue, application number 201721438196.8 discloses a non-destructive imaging inspection instrument for camera lenses. This instrument includes an inspection frame with a horizontal two-dimensional moving frame at its top. An optical probe, a spectral confocal optical probe, is mounted on the two-dimensional moving frame and faces directly downwards. The optical probe is driven by a servo motor to move along the two-dimensional moving frame. Below the optical probe is a lens clamp for fixing the lens. Below the lens clamp is a positioning platform, which includes two ring laser emitters and an imaging camera.

[0004] The above-mentioned patent has the following problems when used: In the process of clamping and fixing the lens, the operator needs to hold the lens by hand and place it between the lens and the clamp, and then drive the clamp to clamp and fix the lens. The operation steps are cumbersome, time-consuming and labor-intensive. Moreover, the lens is prone to tilting when the operator holds the lens, which will affect the measurement results of the lens. There is room for improvement.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a non-destructive measurement device for multi-aperture lenses.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A non-destructive testing device for multi-aperture lenses includes a base plate, a fixing mechanism, and a control module;

[0009] A bracket is fixedly connected to the base plate, a fixing mechanism is provided on the bracket, a lens is provided on the fixing mechanism, an optical probe and an imaging camera are respectively provided on the bracket and the base plate, the optical probe and the imaging camera are respectively corresponding to the lens, a control module is provided on the base plate, and the fixing mechanism, the optical probe and the imaging camera are all connected to the control module;

[0010] The fixing mechanism includes a circular plate, limiting components, a motor, a bevel gear, and a bevel gear ring. The circular plate is fixedly mounted on the bracket, and three limiting components are provided on the circular plate. All three limiting components are connected to the lens. Through the coordinated design of the bracket, fixing mechanism, and control module, the lens can be automatically fixed and accurately positioned, improving convenience and measurement results. It can also better fix lenses of different apertures, expanding the applicability.

[0011] Preferably, a beveled ring is rotatably fitted onto the circular plate. The beveled ring is connected to all three limiting components, which are arranged at equal intervals on the circular plate. The centers of the three limiting components correspond to the centers of the optical probe and the imaging camera. Each limiting component includes a fixed block, a movable plate, a trapezoidal block one, a threaded rod, a bevel gear two, an electric telescopic rod, and a trapezoidal block two. Three movable plates are slidably connected to the circular plate, and fixed blocks are slidably connected to both sides of each movable plate. Two fixed blocks are fixedly connected to the circular plate. When the lens is placed on the inclined surface of the three trapezoidal blocks one, the inclined surface of the three trapezoidal blocks one causes the lens to automatically move towards the center between the three trapezoidal blocks one. Then, driven by the three electric telescopic rods, the inclined surfaces of the three trapezoidal blocks two interact with the lens, and through their cooperation with the three trapezoidal blocks one, the lens is corrected to prevent tilting. This also further aligns the center of the lens with the center of the optical probe, improving the accuracy of lens measurement.

[0012] Preferably, a trapezoidal block 1 is fixedly connected to the movable plate, the trapezoidal block 1 is in contact with the lens, a threaded rod is threadedly connected to the movable plate, the threaded rod is rotatably connected to the circular plate, one end of the threaded rod passes through the circular plate and is fixedly connected to a bevel gear 2, the bevel gear 2 is meshed with the bevel gear ring, and through the drive of the motor and the transmission of the bevel gear 1, the bevel gear ring, the bevel gear 2 and the threaded rod, the movable plate slides a certain distance on the circular plate, thereby achieving the effect of adjusting the distance between the three trapezoidal blocks 1.

[0013] Preferably, an electric telescopic rod is fixedly installed on the movable plate. One end of the electric telescopic rod is fixedly connected to a trapezoidal block two. The trapezoidal block two is in contact with both the lens and the trapezoidal block one. Driven by the three electric telescopic rods, the inclined surfaces on the three trapezoidal blocks two interact with the lens. Through the cooperation between the two trapezoidal blocks two and the three trapezoidal blocks one, the lens is corrected.

[0014] Preferably, an electric motor is fixedly mounted on the circular plate, and a bevel gear is fixedly connected to the output end of the electric motor. The bevel gear meshes with the bevel ring. The electric motor is connected to the control module. The electric motor drives the bevel gear and the bevel ring to transmit power. At the same time, the bevel ring and the three bevel gears transmit power synchronously, so that the three threaded rods rotate synchronously on the circular plate.

[0015] Preferably, the electric telescopic rod is connected to the control module, and a bearing is fixedly sleeved on the circular plate. The outer wall of the bearing is fixedly connected to the bevel gear ring to facilitate the rotation of the bevel gear ring.

[0016] Preferably, both the bracket and the circular plate have through holes, and both through holes correspond to the lens. The centers of the two through holes correspond to the centers of the optical probe and the imaging camera, which facilitates the measurement of the lens.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] (1) The present invention provides a multi-aperture non-destructive measurement device for lenses. The lens is placed on the inclined surface of three trapezoidal blocks. At this time, the inclined surface of the three trapezoidal blocks causes the lens to automatically move towards the center between the three trapezoidal blocks. Then, driven by the three electric telescopic rods, the inclined surface of the three trapezoidal blocks interacts with the lens, and through the cooperation between the three trapezoidal blocks, the lens is corrected to prevent it from tilting. At the same time, the center of the lens is aligned with the center of the optical probe, thus improving the accuracy of lens measurement.

[0019] (2) The lens multi-aperture non-destructive measuring device of this utility model, through the drive of the motor and the transmission of the first bevel gear, the bevel gear ring, the second bevel gear and the threaded rod, makes the moving plate slide a certain distance on the circular plate, thereby achieving the effect of adjusting the distance between the three trapezoidal blocks, and thus achieving the effect of fixing the lenses of different apertures, improving the applicability range. Attached Figure Description

[0020] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary. The structures, proportions, sizes, etc., shown in this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance, and any modification of the structure, change of the proportional relationship, or adjustment of the size is not permitted.

[0021] Figure 1 This is a three-dimensional structural diagram of a multi-aperture non-destructive measuring device for lenses proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the fixing mechanism of a multi-aperture non-destructive measuring device for lenses proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the limiting component of a multi-aperture non-destructive measurement device for lenses proposed in this utility model;

[0024] Figure 4 for Figure 2 A schematic diagram of the hair structure at point A in the middle;

[0025] Figure 5 This is an exploded view of the limiting component of a multi-aperture non-destructive measuring device for lenses proposed in this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Support; 3. Fixing mechanism; 4. Lens; 5. Optical probe; 6. Imaging camera; 7. Control module; 8. Through hole one; 31. Circular plate; 32. Limiting component; 33. Motor; 34. Bevel gear one; 35. Bevel gear ring; 321. Fixing block; 322. Moving plate; 323. Trapezoidal block one; 324. Threaded rod; 325. Bevel gear two; 326. Electric telescopic rod; 327. Trapezoidal block two. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides a non-destructive testing device for multi-aperture lenses, referring to... Figure 1-5A lens multi-aperture non-destructive measuring device includes a base plate 1, a fixing mechanism 3, and a control module 7.

[0029] A bracket 2 is fixedly connected to the base plate 1. A fixing mechanism 3 is provided on the bracket 2, and a lens 4 is provided on the fixing mechanism. An optical probe 5 and an imaging camera 6 are respectively provided on the bracket 2 and the base plate 1. The optical probe 5 and the imaging camera 6 are both corresponding to the lens 4. A control module 7 is provided on the base plate 1. The fixing mechanism 3, the optical probe, and the imaging camera 6 are all connected to the control module 7. The optical probe 5 emits a light source to the lens 4, and the imaging camera 6 receives the light source that penetrates the lens 4 and performs imaging processing. Then, the information is transmitted to the control module 7. The control module then calculates and compares the information with standard information and determines whether the lens 4 is qualified, thereby achieving the effect of measuring the lens 4. The specific structure and working principle of the optical probe and the imaging camera can be referred to the document with application number 201721438196.8 filed in this application. This is prior art and will not be described in detail.

[0030] The fixing mechanism 3 includes a circular plate 31, a limiting component 32, a motor 33, a bevel gear 34, and a bevel gear ring 35. The circular plate 31 is fixedly installed on the bracket 2. The circular plate 31 is provided with three limiting components 32, all of which are connected to the lens 4. Through the coordinated design between the bracket 2, the fixing mechanism 3, and the control module 7, the lens 4 can be automatically fixed and accurately positioned, improving convenience and measurement results of the lens 4. It can also achieve a better effect of fixing lenses 4 of different diameters, thus expanding the applicability.

[0031] In this embodiment, a beveled ring 35 is rotatably sleeved on the circular plate 31. The beveled ring 35 is connected to three limiting components 32. The three limiting components 32 are arranged at equal intervals on the circular plate 31. The center of the three limiting components 32 corresponds to the center of the optical probe 5 and the imaging camera 6. The limiting component 32 includes a fixed block 321, a movable plate 322, a trapezoidal block 323, a threaded rod 324, a bevel gear 325, an electric telescopic rod 326, and a trapezoidal block 327. Three movable plates 322 are slidably connected to the circular plate 31. Fixed blocks 321 are slidably connected to both sides of the movable plates 322. Fixedly connected to the circular plate 31, the lens 4 is placed on the inclined surface of the three trapezoidal blocks 323. At this time, through the action of the inclined surface of the three trapezoidal blocks 323, the lens 4 automatically moves towards the center between the three trapezoidal blocks 323. Then, driven by the three electric telescopic rods 326, the inclined surface of the three trapezoidal blocks 327 interacts with the lens 4, and through the cooperation with the three trapezoidal blocks 323, the lens 4 is corrected, preventing it from tilting. At the same time, the center of the lens 4 is aligned with the center of the optical probe 5, improving the accuracy of the lens 4 measurement.

[0032] In this embodiment, a trapezoidal block 323 is fixedly connected to the movable plate 322. The trapezoidal block 323 is in contact with the lens 4. A threaded rod 324 is threadedly connected to the movable plate 322. The threaded rod 324 is rotatably connected to the circular plate 31. One end of the threaded rod 324 passes through the circular plate 31 and is fixedly connected to a bevel gear 325. The bevel gear 325 meshes with the bevel ring 35. Driven by the motor 33 and transmitted by the bevel gear 34, bevel ring 35, bevel gear 325, and threaded rod 324, the movable plate 322 slides a certain distance on the circular plate 31, thereby achieving the effect of adjusting the distance between the three trapezoidal blocks 323.

[0033] In this embodiment, an electric telescopic rod 326 is fixedly installed on the movable plate 322. One end of the electric telescopic rod 326 is fixedly connected to a trapezoidal block 327. The trapezoidal block 327 is in contact with both the lens 4 and the trapezoidal block 323. Driven by the three electric telescopic rods 326, the inclined surfaces on the three trapezoidal blocks 327 interact with the lens 4. Through the cooperation between the trapezoidal blocks 327 and the three trapezoidal blocks 323, the lens 4 is corrected.

[0034] In this embodiment, a motor 33 is fixedly installed on the circular plate 31. A bevel gear 34 is fixedly connected to the output end of the motor 33. The bevel gear 34 meshes with the bevel ring 35. The motor 33 is connected to the control module 7. The motor 33 drives the bevel gear 34 to transmit power to the bevel ring 35. At the same time, the bevel ring 35 transmits power synchronously with the three bevel gears 325, so that the three threaded rods 324 rotate synchronously on the circular plate 31.

[0035] In this embodiment, the electric telescopic rod 326 is connected to the control module 7, and a bearing is fixedly sleeved on the circular plate 31. The outer wall of the bearing is fixedly connected to the bevel gear ring 35 to facilitate the rotation of the bevel gear ring 35.

[0036] In this embodiment, both the bracket 2 and the circular plate 31 are provided with through holes 8. Both through holes 8 correspond to the lens 4, and the center of both through holes 8 corresponds to the center of the optical probe 5 and the imaging camera 6, which facilitates the measurement of the lens 4.

[0037] Working principle: During use, the control module 7 drives and controls the motor 33, the electric telescopic rod 326 and the optical probe 5. The optical probe 5 emits a light source to the lens 4, and the imaging camera 6 receives the light source that penetrates the lens 4 and performs image processing. The information is then transmitted to the control module 7. The control module calculates and compares the information with the standard information and determines whether the lens 4 is qualified, thereby achieving the effect of measuring the lens 4.

[0038] When fixing the lens 4, the lens 4 is first placed on the inclined surface of the three trapezoidal blocks 323. At this time, through the action of the inclined surface of the three trapezoidal blocks 323, the lens 4 automatically moves towards the center between the three trapezoidal blocks 323.

[0039] Then, the three electric telescopic rods 326 are activated simultaneously. Driven by the electric telescopic rods 326, trapezoidal block 327 moves towards lens 4, and the inclined surface on trapezoidal block 327 interacts with lens 4. During this process, through the synchronous interaction of the inclined surfaces of the three trapezoidal blocks 327 with lens 4, and through the cooperation with the three trapezoidal blocks 323, the lens 4 is corrected, preventing it from tilting. At the same time, the center of lens 4 is aligned with the center of optical probe 5, improving the accuracy of lens 4 measurement.

[0040] Driven by the electric motor 33, the bevel gear 34 and the bevel ring 35 are driven to transmit power. At the same time, the bevel ring 35 and the three bevel gears 325 are driven synchronously, so that the three threaded rods 324 rotate synchronously on the circular plate 31. Meanwhile, the three threaded rods 324 are driven by the three moving plates 322 respectively, so that the three moving plates 322 slide synchronously on the circular plate 31 a certain distance. This achieves the effect of adjusting the distance between the three trapezoidal blocks 323, thereby facilitating the fixing of lenses 4 with different diameters and improving the applicability.

[0041] The technological advancements of this invention compared to existing technologies are as follows: through the cooperation of various components, it can not only achieve automatic fixing and precise positioning of the lens 4, improving convenience and measurement results of the lens 4, but also achieve better fixing of lenses 4 with different apertures, expanding the scope of application. Moreover, the structure is simple and the practicality is higher.

[0042] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A non-destructive testing device for multi-aperture lenses, characterized in that, It includes a base plate (1), a fixing mechanism (3), and a control module (7); A bracket (2) is fixedly connected to the base plate (1). A fixing mechanism (3) is provided on the bracket (2). A lens (4) is provided on the fixing mechanism. An optical probe (5) and an imaging camera (6) are respectively provided on the bracket (2) and the base plate (1). The optical probe (5) and the imaging camera (6) are both corresponding to the lens (4). A control module (7) is provided on the base plate (1). The fixing mechanism (3), the optical probe and the imaging camera (6) are all connected to the control module (7). The fixing mechanism (3) includes a circular plate (31), a limiting component (32), a motor (33), a bevel gear (34), and a bevel gear ring (35). The circular plate (31) is fixedly installed on the bracket (2). The circular plate (31) is provided with three limiting components (32), and the three limiting components (32) are all connected to the lens (4).

2. The lens multi-aperture non-destructive measuring device according to claim 1, characterized in that, A beveled ring (35) is rotatably sleeved on the circular plate (31). The beveled ring (35) is connected to three limiting components (32). The three limiting components (32) are arranged at equal intervals on the circular plate (31). The center between the three limiting components (32) corresponds to the center of the optical probe (5) and the imaging camera (6). The limiting component (32) includes a fixed block (321), a movable plate (322), a trapezoidal block (323), a threaded rod (324), a bevel gear (325), an electric telescopic rod (326), and a trapezoidal block (327). Three movable plates (322) are slidably connected on the circular plate (31). Fixed blocks (321) are slidably connected to both sides of the movable plates (322). Two of the fixed blocks (321) are fixedly connected to the circular plate (31).

3. The lens multi-aperture non-destructive measuring device according to claim 2, characterized in that, A trapezoidal block (323) is fixedly connected to the movable plate (322), and the trapezoidal block (323) is in contact with the lens (4). A threaded rod (324) is threadedly connected to the movable plate (322), and the threaded rod (324) is rotatably connected to the circular plate (31).

4. The lens multi-aperture non-destructive measuring device according to claim 3, characterized in that, One end of the threaded rod (324) passes through the circular plate (31) and is fixedly connected to a bevel gear (325), which meshes with the bevel gear ring (35).

5. The lens multi-aperture non-destructive measuring device according to claim 3, characterized in that, An electric telescopic rod (326) is fixedly installed on the movable plate (322). One end of the electric telescopic rod (326) is fixedly connected to a trapezoidal block two (327). The trapezoidal block two (327) is in contact with both the lens (4) and the trapezoidal block one (323).

6. The lens multi-aperture non-destructive measuring device according to claim 1, characterized in that, An electric motor (33) is fixedly installed on the circular plate (31). A bevel gear (34) is fixedly connected to the output end of the electric motor (33). The bevel gear (34) meshes with the bevel ring (35). The electric motor (33) is connected to the control module (7).

7. The lens multi-aperture non-destructive measuring device according to claim 5, characterized in that, The electric telescopic rod (326) is connected to the control module (7), and a bearing is fixedly sleeved on the circular plate (31). The outer wall of the bearing is fixedly connected to the bevel ring (35).

8. The lens multi-aperture non-destructive measuring device according to claim 1, characterized in that, Both the bracket (2) and the circular plate (31) are provided with through holes (8), both of which correspond to the lens (4), and the center of both through holes (8) corresponds to the center of the optical probe (5) and the imaging camera (6).

Images