Automatic calibration device for focal length table of continuous zoom lens

Abstract

The utility model discloses an automatic calibration device for a focal length table of a continuous zoom lens, and relates to the technical field of lens focal length calibration devices. The device comprises a base, a side plate, a standard object, a supporting seat and a continuous zoom lens body arranged on the top surface of the supporting seat, a zoom switch is arranged on the outer wall of the continuous zoom lens body, and a combined gear ring, an adjusting plate, a supporting frame and an electric telescopic rod are arranged between the supporting seat and the zoom switch. According to the automatic calibration device for the focal length table of the continuous zoom lens, a traditional integrated toothed plate is changed, the toothed plate is divided into the frame body and the adjusting plates of which the positions can be changed, so that the distances among the multiple groups of adjusting plates are adjusted under the assistance of the movable rods, the connecting plates, the connecting shafts and the adjusting screw rods; therefore, the adjusting plate with the distance adjusted can be stably meshed with the gear rings with different sizes on the outer wall of the zoom switch, so that the continuous zoom lens can be continuously and stably zoomed, and the manufactured focal length table is relatively high in accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of lens focal length calibration devices, in particular to an automatic calibration device for a continuous zoom lens focal length table. Background Art

[0002] By adjusting the focal length of the lens, the continuous zoom lens can capture images of standard objects. Then, the focal length values ​​of the lens at different zoom positions are determined through imaging analysis of known standard objects. Subsequently, a receiving terminal compatible with the continuous zoom lens receives information from the imaging system and sensor in the continuous zoom lens, and performs data analysis and processing to calculate the focal length value of the lens. It also quickly and accurately generates an accurate focal length table for each lens produced. The automatic calibration device ensures imaging clarity and accuracy at different focal lengths, greatly improving the user's shooting experience.

[0003] The existing method uses a combined tooth plate, a tooth ring and a driving device to automatically control the continuous zoom of a continuous zoom lens. However, for continuous zoom lenses of different sizes, the sizes of the tooth rings set on the outer wall of the zoom switch are also different, that is, the distances between two adjacent groups of tooth blocks at tooth rings of different sizes are different, and the tooth plate set at the focal length table automatic calibration device is fixed in size, so that the tooth blocks at a fixed distance on the outer wall of the tooth plate cannot be stably engaged with the tooth blocks at tooth rings of different sizes, which makes the focal length table automatic calibration device driving the continuous zoom lens zoom device have great limitations. In view of the shortcomings of the existing technology, we propose an automatic calibration device for the focal length table of continuous zoom lens to solve the above problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides an automatic calibration device for the focal length table of a continuous zoom lens, which solves the problem that for continuous zoom lenses of different sizes, the sizes of the tooth rings set on the outer wall of the zoom switch are also different, while the size of the tooth plate set at the automatic calibration device of the focal length table is fixed, resulting in poor adaptability between them.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic calibration device for a focal length table of a continuous zoom lens, comprising a base, a side plate arranged on one side of the base, a standard object arranged on one side of the side plate, a support seat arranged on the top surface of the base, and a continuous zoom lens body arranged on the top surface of the support seat, wherein a zoom switch is arranged on the outer wall of the continuous zoom lens body, and a combined gear ring, an adjustment plate, a support frame, and an electric telescopic rod are arranged between the support seat and the zoom switch, and an adjustment mechanism is arranged inside the support frame, and the adjustment mechanism includes:

[0006] A movable rod, which is arranged on the outer wall of the adjustment plate;

[0007] A connecting plate is hingedly provided between two adjacent groups of movable rods, and a connecting shaft is hingedly provided at the intersection of the two groups of connecting plates;

[0008] a positioning block connected to one end of the connecting shaft;

[0009] One end of the adjusting screw is rotatably arranged inside the supporting frame, and the spacing between the multiple groups of adjusting plates is adjusted through the threaded connection between the multiple groups of positioning blocks and the adjusting screw.

[0010] Preferably, a positioning track is fixedly provided on the inner wall of the support frame, and a plurality of groups of positioning blocks slide within the positioning track within a limited position, and a bolt is provided on the outer wall of one end of the adjusting screw extending to the upper part of the support frame.

[0011] Preferably, the inner wall of the support frame is provided with slideways for limiting the movement of multiple groups of adjustment plates.

[0012] Preferably, a moving component is provided on one side of the support frame, and the moving component is used to control the connection position between the adjustment plate and the gear ring.

[0013] Preferably, the moving assembly includes a connecting frame arranged on one side of the support frame, a control screw rotatably arranged inside the connecting frame, and a threaded block threadedly sleeved on the outer wall of the control screw, and the top surface of the threaded block is fixedly connected to the bottom surface of the support frame.

[0014] Preferably, a guide seat is provided on the top surface of the base, a guide screw is provided inside the guide seat, a guide block is provided on the bottom surface of the support seat that is threadedly connected to the outer wall of the guide screw, and a drive motor for driving the guide screw to rotate is provided on one side of the guide seat.

[0015] Preferably, a scale mark is provided on the top surface of the guide seat.

[0016] The utility model discloses an automatic calibration device for a focal length meter of a continuous zoom lens, which has the following beneficial effects: the automatic calibration device for a focal length meter of a continuous zoom lens changes the traditional integrated tooth plate and divides it into a frame and an adjustment plate capable of changing its position, so that with the assistance of a movable rod, a connecting plate, a connecting shaft and an adjusting screw, the spacing of multiple groups of adjustment plates can be adjusted, so that the adjustment plates after the spacing is adjusted can be firmly engaged with tooth rings of different sizes on the outer wall of a zoom switch, so that the continuous zoom lens can be continuously and stably zoomed, so that the accuracy of the manufactured focal length meter is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is an exploded view of the support seat and guide seat structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the support base and the continuous zoom lens body of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the continuous zoom lens body, zoom switch and gear ring of the utility model;

[0022] Figure 5 This is a schematic diagram of the support seat, adjustment plate and support frame structure of the utility model;

[0023] Figure 6 This is a plan view of the connection structure between the support frame and the adjustment plate of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the adjusting plate, connecting rod and adjusting screw of the utility model.

[0025] In the figure: 1. Base; 2. Side panel; 21. Standard object; 3. Support seat; 4. Continuous zoom lens body; 41. Zoom switch; 5. Gear ring; 51. Adjustment plate; 52. Support frame; 53. Electric telescopic rod; 6. Adjustment mechanism; 61. Movable rod; 62. Connecting plate; 63. Connecting shaft; 64. Positioning block; 65. Positioning track; 66. Adjusting screw; 67. Slide; 7. Moving assembly; 71. Connecting frame; 72. Control screw; 73. Threaded block; 8. Guide seat; 81. Guide screw; 82. Guide block; 83. Drive motor; 84. Scale mark. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] The embodiment of the present application solves the problem that for continuous zoom lenses of different sizes, the sizes of the tooth rings set on the outer wall of the zoom switch are also different, and the size of the tooth plates set at the automatic calibration device of the focal length meter is fixed, resulting in poor adaptability between them, by providing an automatic calibration device for the focal length table of the continuous zoom lens. The embodiment of the present application realizes the change of the spacing between the multiple groups of adjustment plates to ensure stable engagement between the tooth rings of different sizes and the multiple groups of adjustment plates.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] The embodiment of the utility model discloses an automatic calibration device for a focal length table of a continuous zoom lens.

[0030] According to the attached Figure 1-7 As shown, it includes a base 1, a side plate 2 arranged on one side of the base 1, a standard object 21 arranged on one side of the side plate 2, a support seat 3 arranged on the top surface of the base 1 and a continuous zoom lens body 4 arranged on the top surface of the support seat 3. The continuous zoom lens body 4 is fixed to the top surface of the support seat 3 by a clamp, and the outer wall of the continuous zoom lens body 4 is provided with a zoom switch 41. A combined gear ring 5, an adjustment plate 51, a support frame 52 and an electric telescopic rod 53 are provided between the support seat 3 and the zoom switch 41. After being combined, they can control the zoom switch 41 to perform continuous rotation adjustment, and thus can adjust the zoom position of the continuous zoom lens body 4. The outer wall of the zoom switch 41 is provided with a gear ring 5, and the outer wall of the gear ring 5 is provided with multiple groups of adjustment plates 51 connected thereto. One side of the support seat 3 is provided with a support frame 52 for supporting multiple groups of adjustment plates 51 and an electric telescopic rod for driving the adjustment plate 51 to move up and down. 53. When automatically calibrating and producing the focal length table of the continuous zoom lens, the standard object 21 is first fixed on the side panel 2. The size and other information of the standard object 21 are all known. Then the continuous zoom lens body 4 is started to image the standard object 21. During this process, by turning on the electric telescopic rod 53, the multiple groups of adjustment plates 51 are driven to move upward or downward at the same time, so that the multiple groups of adjustment plates 51 drive the gear ring 5 to rotate when meshing with the gear ring 5, and then control the zoom switch 41 to rotate to change the focal length of the continuous zoom lens body 4. By comparing the size, clarity and other characteristics of the image at different zoom positions, combined with the known information such as the size and distance of the standard object 21, the focal length of the lens is calculated. Then, the transmission terminal inside the continuous zoom lens body 4 transmits the imaging information to the receiving terminal. The receiving terminal analyzes and processes the data, calculates the focal length value of the lens, and generates a corresponding focal length table.

[0031] Refer to the attached Figure 3-7The support frame 52 is provided with an adjustment mechanism 6 inside. By means of the adjustment mechanism 6, the upper and lower spacings of the plurality of adjustment plates 51 can be adjusted so that the adjustment plates 51 after adjustment form tooth plates of different sizes so that they can be precisely engaged with the tooth rings 5 ​​of different sizes provided on the outer wall of the zoom switch 41. Figure 6 , a group of adjustment plates 51 at the uppermost end of the support frame 52 is fixedly connected to the inner wall of the support frame 52, and the other adjustment plates 51 are slidably arranged inside the support frame 52, and the adjustment mechanism 6 includes a movable rod 61, and the movable rod 61 is arranged on the outer wall of the adjustment plate 51, and a connecting plate 62 is hingedly provided between the upper and lower adjacent groups of movable rods 61, and a connecting shaft 63 is hingedly provided at the intersection of the two groups of connecting plates 62, and a positioning block 64 is connected to one end of the connecting shaft 63. A positioning rail 65 is fixedly provided on the inner wall of the support frame 52, and multiple groups of positioning blocks 64 are limited and slid inside the positioning rail 65. For details, please refer to the attached Figure 6-7 One end of the adjusting screw 66 is rotatably set inside the positioning track 65, and the spacing of the multiple groups of adjustment plates 51 is adjusted by the threaded connection between the multiple groups of positioning blocks 64 and the adjusting screw 66. The outer wall of one end of the adjusting screw 66 extending to the upper part of the support frame 52 is provided with a bolt, and the inner wall of the support frame 52 is provided with a slide 67 for limiting the movement of the multiple groups of adjustment plates 51. By rotating the adjusting screw 66, the multiple groups of positioning blocks 64 are moved along the positioning track 65, so that except for the topmost group of adjustment plates 51, the other adjustment plates 51 are moved up or down at the same time with the assistance of the movable rod 61, the connecting plate 62 and the connecting shaft 63, so as to adjust the spacing of the multiple groups of adjustment plates 51.

[0032] Refer to the attached Figure 3-7 A moving assembly 7 is provided on one side of the support frame 52. The moving assembly 7 is used to control the connection position between the adjustment plate 51 and the gear ring 5, that is, when the continuous zoom lens body 4 placed on the support seat 3 is replaced, the adjustment plate 51 and the gear ring 5 can be separated. The moving assembly 7 includes a connecting frame 71 provided on one side of the support frame 52, a control screw 72 rotatably provided inside the connecting frame 71, and a threaded block 73 threadedly sleeved on the outer wall of the control screw 72. The top surface of the threaded block 73 is fixedly connected to the bottom surface of the support frame 52, and a bolt is provided on the outer wall of one end of the control screw 72 extending to the outside of the connecting frame 71.

[0033] Refer to the attached Figure 1-2A guide seat 8 is provided on the top surface of the base 1, and a guide screw 81 is provided inside the guide seat 8. A guide block 82 is provided on the bottom surface of the support seat 3 and is threadedly connected to the outer wall of the guide screw 81. The guide block 82 is slidably arranged inside the guide seat 8. A driving motor 83 for driving the guide screw 81 to rotate is provided on one side of the guide seat 8. A scale mark 84 is provided on the top surface of the guide seat 8. By turning on the driving motor 83, the guide screw 81 is driven to rotate, and the support seat 3 is changed in position under the action of the threaded connection between the guide screw 81 and the guide block 82, so as to adjust the distance between the support seat 3 and the side plate 2.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic calibration device for a focal length table of a continuous zoom lens, comprising a base (1), a side plate (2) arranged on one side of the base (1), a standard object (21) arranged on one side of the side plate (2), a support seat (3) arranged on the top surface of the base (1), and a continuous zoom lens body (4) arranged on the top surface of the support seat (3), wherein a zoom switch (41) is arranged on the outer wall of the continuous zoom lens body (4), and characterized in that: A combined gear ring (5), an adjustment plate (51), a support frame (52), and an electric telescopic rod (53) are provided between the support seat (3) and the zoom switch (41). An adjustment mechanism (6) is provided inside the support frame (52). The adjustment mechanism (6) includes: A movable rod (61) is provided on the outer wall of the adjustment plate (51); A connecting plate (62) is hingedly provided between two upper and lower adjacent groups of movable rods (61), and a connecting shaft (63) is hingedly provided at the intersection of the two groups of connecting plates (62); a positioning block (64) connected to one end of the connecting shaft (63); One end of the adjusting screw (66) is rotatably arranged inside the supporting frame (52), and the spacing between the multiple groups of adjusting plates (51) is adjusted through the threaded connection between the multiple groups of positioning blocks (64) and the adjusting screw (66).

2. The automatic calibration device for a focal length table of a continuous zoom lens according to claim 1, characterized in that: The inner wall of the support frame (52) is fixedly provided with a positioning track (65), and a plurality of groups of positioning blocks (64) are limitedly slid inside the positioning track (65). The adjusting screw (66) extends to the outer wall of one end of the upper part of the support frame (52) and is provided with a bolt.

3. The automatic calibration device for a focal length table of a continuous zoom lens according to claim 2, characterized in that: The inner wall of the support frame (52) is provided with a slideway (67) for limiting the movement of multiple groups of adjustment plates (51).

4. The automatic calibration device for a focal length table of a continuous zoom lens according to claim 3, characterized in that: A moving assembly (7) is provided on one side of the support frame (52), and the moving assembly (7) is used to control the connection position between the adjustment plate (51) and the gear ring (5).

5. The automatic calibration device for a focal length table of a continuous zoom lens according to claim 4, characterized in that: The moving assembly (7) comprises a connecting frame (71) arranged on one side of the support frame (52), a control screw (72) rotatably arranged inside the connecting frame (71), and a threaded block (73) threadedly sleeved on the outer wall of the control screw (72), wherein the top surface of the threaded block (73) is fixedly connected to the bottom surface of the support frame (52).

6. The automatic calibration device for a focal length table of a continuous zoom lens according to claim 1, characterized in that: The top surface of the base (1) is provided with a guide seat (8), the interior of the guide seat (8) is provided with a guide screw (81), the bottom surface of the support seat (3) is provided with a guide block (82) threadedly connected to the outer wall of the guide screw (81), and one side of the guide seat (8) is provided with a drive motor (83) for driving the guide screw (81) to rotate.

7. The automatic calibration device for a focal length table of a continuous zoom lens according to claim 6, characterized in that: The top surface of the guide seat (8) is provided with a scale mark (84).

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