Lens rotation performance testing device

Abstract

The utility model discloses a device for testing the rotation performance of a lens. The device comprises a power mechanism, a sliding mechanism and a clamping mechanism, the power mechanism comprises a base, the base is rotationally provided with a power shaft and a mounting base, a torque sensor is connected between the power shaft and the mounting base, a mounting space is formed in the side, away from the power shaft, of the mounting base, and the base is provided with a first rotary driver used for driving the power shaft to rotate; the sliding mechanism comprises a sliding seat, and the base is provided with a first linear driver used for driving the sliding seat. The clamping mechanism comprises two clamping blocks, the mounting space is arranged between the two clamping blocks, and a second linear driver is connected between the clamping blocks and the sliding seat. The lens is installed on the installation base, the sliding base moves to enable the clamping blocks to be aligned with the zoom ring or the focusing ring, the two clamping blocks clamp the zoom ring or the focusing ring, then the first rotation driver is started to enable the power shaft, the installation base and the lens to rotate, the torque sensor can test the torque needed by rotation of the zoom ring or the focusing ring, operation is easy and convenient, and errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a lens rotation performance testing device. Background Art

[0002] The zoom lens of a camera zooms and focuses by rotating the zoom ring and the focus adjustment ring. During the manufacturing process, the zoom lens needs to test the rotation endurance and the torque required for the zoom ring and the focus adjustment ring to evaluate whether the product meets the standards. Currently, many companies still use purely manual methods to detect the rotation times and torque. However, in the actual testing process, manual operation will inevitably produce errors. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a lens rotation performance testing device.

[0004] The lens rotation performance testing device according to the embodiment of the utility model comprises:

[0005] The power mechanism comprises a base, the base is rotatably provided with a power shaft and a mounting seat for mounting a lens, the power shaft is coaxial with the mounting seat, a torque sensor is connected between the power shaft and the mounting seat, a mounting space is provided on a side of the mounting seat away from the power shaft, and the base is provided with a first rotary driver for driving the power shaft to rotate;

[0006] The sliding mechanism comprises a sliding seat, wherein the sliding seat and the base are arranged to slide relative to each other along the axial direction of the power shaft, and the base is provided with a first linear driver for driving the sliding seat;

[0007] The clamping mechanism comprises two clamping blocks, the installation space is arranged between the two clamping blocks, a second linear drive is connected between each clamping block and the sliding seat, and the second linear drive is used to drive the clamping block to move away from or close to the installation space.

[0008] The lens rotation performance testing device according to the embodiment of the utility model has at least the following technical effects: when in use, the lens can be installed on the mounting seat, and then the first linear drive drives the sliding seat to move so that the clamping block is aligned with the zoom ring or focus ring of the lens, and then the two second linear drives respectively drive the two clamping blocks, and the two clamping blocks clamp the zoom ring or focus ring so that the zoom ring or focus ring cannot rotate, and then the first rotary drive is started to rotate the power shaft, the mounting seat, and the lens, and the torque sensor can test the torque required for the rotation of the zoom ring or focus ring, which is easy to operate and reduces errors.

[0009] According to some embodiments of the present utility model, the lens rotation performance testing device further includes a fixed base, the base is rotatably arranged on the fixed base, and the rotating shaft at the rotation position is perpendicular to the power shaft.

[0010] According to some embodiments of the present utility model, the fixed base is provided with a second rotation driver for driving the base to rotate.

[0011] According to some embodiments of the present utility model, the lens rotation performance testing device further includes a rotational speed sensor, the rotational speed sensor has a speed measuring shaft, and the speed measuring shaft is linked to the power shaft.

[0012] According to some embodiments of the present utility model, the rotational speed sensor is connected to the base.

[0013] According to some embodiments of the present utility model, the speed measuring shaft is provided with a driven wheel, the power shaft is provided with a driving wheel, and the driven wheel and the driving wheel are in radial contact with each other.

[0014] According to some embodiments of the present utility model, the driven wheel and the driving wheel have the same diameter.

[0015] According to some embodiments of the present utility model, the power shaft, the torque sensor and the mounting base are arranged in sequence from left to right, and two supporting wheels are provided at the right bottom of the installation space, and the two supporting wheels are arranged at intervals front and back.

[0016] According to some embodiments of the present utility model, the lens rotation performance testing device further includes a support plate, both of the two supporting wheels are arranged on the upper side of the support plate, and the support plate is arranged to slide relative to the base in the horizontal direction.

[0017] According to some embodiments of the present utility model, a notch is provided on one side of the clamping block facing the installation space, and the notch is adapted to the installation space.

[0018] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a three-dimensional structural schematic diagram of a lens rotation performance testing device according to an embodiment of the present utility model;

[0021] Figure 2 is a horizontal state schematic diagram of a lens rotation performance testing device according to an embodiment of the present utility model;

[0022] Figure 3 It is a schematic vertical state diagram of a lens rotation performance testing device according to an embodiment of the present utility model.

[0023] In the drawings:

[0024] 100 - base; 101 - support base; 102 - vertical plate; 110 - first rotary driver; 120 - power shaft; 130 - torque sensor; 140 - mounting base; 150 - sliding base; 151 - first linear driver; 152 - connecting arm; 160 - clamping block; 161 - second linear driver; 170 - rotational speed sensor; 171 - driven wheel; 172 - driving wheel; 200 - fixed base; 300 - support plate; 310 - supporting wheel. Specific embodiments

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0026] In the description of the present utility model, the orientation descriptions such as up, down, front, back, left, right, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating that the device or element referred to must have a specific orientation and operate in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. The meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating relative importance or indicating the quantity of the indicated technical features or indicating the sequence relationship of the indicated technical features.

[0027] In the description of the present utility model, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the drawings. Obviously, the following described embodiments are some embodiments of the present utility model, not all embodiments.

[0029] Next, refer to Figures 1 to 3 Describe a lens rotation performance testing device according to an embodiment of the present utility model.

[0030] The lens rotation performance testing device of the embodiment of the utility model comprises a power mechanism, a sliding mechanism and a clamping mechanism;

[0031] The power mechanism includes a base 100, the base 100 is rotatably provided with a power shaft 120 and a mounting seat 140 for mounting a lens, the power shaft 120 and the mounting seat 140 are coaxial, a torque sensor 130 is connected between the power shaft 120 and the mounting seat 140, a mounting space is provided on a side of the mounting seat 140 away from the power shaft 120, and the base 100 is provided with a first rotation driver 110 for driving the power shaft 120 to rotate;

[0032] The sliding mechanism includes a sliding seat 150, the sliding seat 150 and the base 100 are relatively slidably arranged along the axial direction of the power shaft 120, and the base 100 is provided with a first linear driver 151 for driving the sliding seat 150;

[0033] The clamping mechanism includes two clamping blocks 160 , and the installation space is set between the two clamping blocks 160 . A second linear driver 161 is connected between each clamping block 160 and the sliding seat 150 , and the second linear driver 161 is used to drive the clamping block 160 away from or close to the installation space.

[0034] For example, Figure 1 As shown, the base 100 includes a bottom plate, a vertical plate 102 and a support seat 101, the bottom plate is arranged horizontally, the vertical plate 102 and the support seat 101 are both fixedly connected to the upper side of the bottom plate, the vertical plate 102 is located at the right end of the bottom plate, and the support seat 101 is located at the left side of the vertical plate 102 and is spaced apart from the vertical plate 102; the first rotary driver 110 can be an electric motor, the axial direction of the first rotary driver 110 is horizontal, the main body of the first rotary driver 110 is fixedly arranged on the support seat 101, the power shaft 120 is arranged on the right side of the first rotary driver 110, the power shaft 120 is arranged horizontally, and the power shaft 120 is connected to the driving shaft of the first rotary driver 110;

[0035] The torque sensor 130 is arranged on the vertical plate 102, and the torque sensor 130 passes through the vertical plate 102 in the horizontal direction. The left side of the torque sensor 130 is connected to the power shaft 120, and the right side of the torque sensor 130 is connected to the mounting seat 140, so that the torque sensor 130 can detect the torque transmitted between the power shaft 120 and the mounting seat 140, and the installation space is located on the right side of the mounting seat 140; wherein, the mounting seat 140 for mounting the lens is a conventional component in this field, and its specific structure is not described here.

[0036] The sliding seat 150 is in the shape of a horizontally arranged plate. A first avoidance groove is provided in the middle of the sliding seat 150. The first avoidance groove extends rightward to penetrate through the sliding seat 150, and the support seat 101 is arranged in the first avoidance groove; the first linear driver 151 is arranged at the bottom of the sliding seat 150. The first linear driver 151 can be a horizontally arranged linear motor. The main body of the first linear driver 151 is fixedly connected to the upper side of the bottom plate, and the driving block of the first linear driver 151 is connected to the lower side of the sliding seat 150. The number of the first linear drivers 151 can be two, and the two first linear drivers 151 are respectively arranged at the front side and the rear side of the support seat 101. The linear motor can directly serve as the sliding connection member between the sliding seat 150 and the base 100. Of course, it is also possible to arrange a sliding connection between the sliding seat 150 and the base 100 through a guide rail slider mechanism and drive it through an electric push rod or other suitable driver; two connecting arms 152 are arranged on the upper side of the sliding seat 150. The two connecting arms 152 respectively cross from the front side and the rear side of the vertical plate 102, so that both connecting arms 152 can extend to the right side of the vertical plate 102.

[0037] Two clamping blocks 160 are respectively arranged at the right ends of the two connecting arms 152. Taking the clamping block 160 located at the front side as an example, the second linear driver 161 is arranged on the left side of the clamping block 160. The second linear driver 161 can be a linearly extending linear motor. The main body of the second linear driver 161 is fixedly connected to the connecting arm 152, and the driving block of the second linear driver 161 is connected to the clamping block 160. The linear motor can directly serve as the sliding connection member between the clamping block 160 and the connecting arm 152. Of course, it is also possible to arrange a sliding connection between the clamping block 160 and the connecting arm 152 through a guide rail slider mechanism and drive it through an electric push rod or other suitable driver.

[0038] During use, the lens can be installed on the mounting seat 140. Then, the first linear driver 151 drives the sliding seat 150 to move so that the clamping blocks 160 are aligned with the zoom ring or the focusing ring of the lens. Then, the two second linear drivers 161 respectively drive the two clamping blocks 160, and the two clamping blocks 160 clamp the zoom ring or the focusing ring so that the zoom ring or the focusing ring cannot rotate. Then, the first rotary driver 110 is started to rotate the power shaft 120, the mounting seat 140, and the lens. The torque sensor 130 can then test the torque required for the rotation of the zoom ring or the focusing ring. The operation is simple and the error is reduced. Among them, by arranging the clamping mechanism on the sliding seat 150, the position of the clamping mechanism can be adjusted, so that the utility model can be applicable to lenses of different models. In addition, the first rotary driver 110 can also be controlled to drive the power shaft 120, the mounting seat 140, and the lens to rotate back and forth to test the number of durable rotations.

[0039] In some embodiments of the present utility model, the lens rotation performance testing device further includes a fixed seat 200. The base 100 is rotatably arranged on the fixed seat 200, and the rotating shaft at the rotation position is perpendicular to the power shaft 120. The fixed seat 200 can be arranged at the included angle formed between the bottom plate and the vertical plate 102. During use, the fixed seat 200 can be fixedly installed on the experimental table, and rotating the base 100 can perform the rotation performance test of the lens at different tilt angles to obtain more comprehensive test data. Refer to Figure 3 , the rotation of the base 100 relative to the fixed seat 200 has a vertical state. In the vertical state, the power shaft 120 is vertically arranged, and the lens is arranged on the upper side of the mounting seat 140.

[0040] In some embodiments of the present utility model, the fixed seat 200 is provided with a second rotation driver for driving the rotation of the base 100. The second rotation driver can be set as a servo motor, a stepper motor, a servo electric roller or other drivers that can control the rotation angle, which is convenient for adjusting the tilt angle of the lens.

[0041] In some embodiments of the present utility model, the lens rotation performance testing device further includes a rotational speed sensor 170. The rotational speed sensor 170 has a speed measuring shaft, and the speed measuring shaft is linked to the power shaft 120. By setting the rotational speed sensor 170, when testing and obtaining the torque required for the rotation of the zoom ring or the focus ring, the rotational speed corresponding to the specific torque can also be obtained to obtain more comprehensive test data. Of course, the first rotation driver 110 can also be set as a component such as a servo motor that can output its own rotational speed data, and the purpose of obtaining rotational speed data can also be achieved.

[0042] In some embodiments of the present utility model, the rotational speed sensor 170 is connected to the base 100. In this way, when the base 100 is rotated to adjust the tilt angle of the lens, the position of the rotational speed sensor 170 also changes accordingly, enabling the rotational speed sensor 170 to maintain the detection of the rotational speed.

[0043] In some embodiments of the present utility model, the speed measuring shaft is provided with a driven wheel 171, and the power shaft 120 is provided with a driving wheel 172. The driven wheel 171 and the driving wheel 172 are in radial contact. In this way, the structure is simple and the setting is convenient, achieving the purpose of linking the speed measuring shaft and the power shaft 120.

[0044] In some embodiments of the present utility model, the driven wheel 171 and the driving wheel 172 have the same diameter. In this way, the rotational speed of the speed measuring shaft is the same as that of the power shaft 120, and no conversion is required, which is convenient for organizing the test data.

[0045] In some embodiments of the present utility model, the power shaft 120, the torque sensor 130 and the mounting seat 140 are arranged in sequence from left to right. Two supporting wheels 310 are arranged at the right bottom of the installation space, and the two supporting wheels 310 are arranged at intervals front and back. Refer toFigure 2 When the base 100 rotates relative to the fixed base 200, it has a lateral state. In the lateral state, the supporting wheel 310 supports the right end of the lens, and the rotation of the lens is relatively stable.

[0046] In some embodiments of the present invention, the lens rotation performance testing device further includes a support plate 300. Both supporting wheels 310 are arranged on the upper side of the support plate 300, and the support plate 300 is slidably arranged relative to the base 100 in the lateral direction. In this way, the lateral positions of the two supporting wheels 310 can be adjusted to adapt to lenses of different models. A guide rail and a slider are arranged at the bottom of the support plate 300. The guide rail can be fixed to the experimental table or other objects, and only needs to be fixedly arranged relative to the fixed base 200. The slider is slidably arranged on the guide rail in the lateral direction, and the slider is connected to the lower side of the support plate 300; the supporting wheel 310 is rotatably arranged on the support plate 300, and the axial direction of the supporting wheel 310 is the lateral direction.

[0047] In some embodiments of the present invention, a notch is arranged on one side of the clamping block 160 facing the installation space, and the notch is adapted to the installation space. Taking the state where the power shaft 120 is arranged horizontally as an example, the notch is triangular in shape, and the upper side wall and the lower side wall of the notch form an included angle. In this way, when clamping the zoom ring or the focus ring, the clamping block 160 has more contact points with the zoom ring or the focus ring, which is beneficial to making the clamping more stable and can be applicable to lenses with different diameters.

[0048] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A lens rotation performance testing device, characterized in that: include: The power mechanism comprises a base, the base is rotatably provided with a power shaft and a mounting seat for mounting a lens, the power shaft is coaxial with the mounting seat, a torque sensor is connected between the power shaft and the mounting seat, a mounting space is provided on a side of the mounting seat away from the power shaft, and the base is provided with a first rotary driver for driving the power shaft to rotate; The sliding mechanism comprises a sliding seat, wherein the sliding seat and the base are arranged to slide relative to each other along the axial direction of the power shaft, and the base is provided with a first linear driver for driving the sliding seat; The clamping mechanism comprises two clamping blocks, the installation space is arranged between the two clamping blocks, a second linear drive is connected between each clamping block and the sliding seat, and the second linear drive is used to drive the clamping block to move away from or close to the installation space.

2. The lens rotation performance testing device according to claim 1, characterized in that: It also includes a fixed seat, the base is rotatably arranged on the fixed seat, and the rotating shaft at the rotating position is perpendicular to the power shaft.

3. The lens rotation performance testing device according to claim 2, characterized in that: The fixing seat is provided with a second rotation driver for driving the base to rotate.

4. The lens rotation performance testing device according to any one of claims 1 to 3, characterized in that: It also includes a rotation speed sensor, which has a speed measuring shaft, and the speed measuring shaft is linked to the power shaft.

5. The lens rotation performance testing device according to claim 4, characterized in that: The rotation speed sensor is connected to the base.

6. The lens rotation performance testing device according to claim 4, characterized in that: The speed measuring shaft is provided with a driven wheel, the power shaft is provided with a driving wheel, and the driven wheel abuts against the driving wheel in the radial direction.

7. The lens rotation performance testing device according to claim 6, characterized in that: The driven wheel has the same diameter as the driving wheel.

8. The lens rotation performance testing device according to claim 1, characterized in that: The power shaft, the torque sensor and the mounting seat are arranged in sequence from left to right. Two supporting wheels are arranged at the right bottom of the installation space, and the two supporting wheels are arranged at a front-to-back interval.

9. The lens rotation performance testing device according to claim 8, characterized in that: It also includes a supporting plate, the two supporting wheels are both arranged on the upper side of the supporting plate, and the supporting plate and the base are arranged to slide relative to each other in the transverse direction.

10. The lens rotation performance testing device according to claim 1, characterized in that: A notch is provided on one side of the clamping block facing the installation space, and the notch is adapted to the installation space.

Images