Focusing device for real shooting of lens

Abstract

The utility model provides a lens real shooting focusing device, which relates to the technical field of lens shooting jigs and comprises a base, a track is arranged on the base, and a first adjusting platform and a second adjusting platform are movably arranged on the track. A camera and a test lens are detachably fixed on the first adjusting platform in the direction towards the second adjusting platform, and a support for placing a focusing test chart is detachably fixed on the second adjusting platform; the first adjusting platform and the second adjusting platform each comprise a three-axis adjusting table and a rotating table, and transverse adjustment, longitudinal adjustment, height adjustment and horizontal angle adjustment are carried out through adjusting screws. In addition, the positioning piece and the positioning column are arranged, so that the operation experience is optimized, and the replacement of the test chart is more convenient and efficient. According to the utility model, the detection precision of lens real shooting focusing is improved, the adjustment is convenient, the positioning is accurate and stable, the detection efficiency is obviously improved, and personal errors are reduced.

Description

Technical Field

[0001] This utility model relates to the field of lens shooting fixture technology, and in particular to a lens shooting focusing device. Background Technology

[0002] In the field of lens manufacturing and tuning, the focusing accuracy of a lens directly affects the image quality, making the lens testing process crucial.

[0003] Currently, lens focusing tests are typically conducted manually. This involves placing the camera on a tripod and manually adjusting the distance and angle between the camera and the test image for actual shooting. However, this method has several shortcomings: First, manually adjusting the camera and lens position using a tripod is susceptible to human error, leading to significant deviations in the shooting position, affecting testing accuracy. Furthermore, adjustments are time-consuming, labor-intensive, and have poor repeatability. Additionally, for scenarios requiring test image changes, the placement of the side view during the change process is highly arbitrary, making it difficult to guarantee consistent shooting conditions after each adjustment. This can potentially cause inconsistencies in test results and misjudgments. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the technical problem to be solved by this utility model is to propose a lens focusing device for actual shooting, and the following technical solution is adopted:

[0005] A lens focusing device for actual shooting includes a base, a track is provided on the base, a first adjustment platform and a second adjustment platform are movably provided on the track; a camera and a test lens are detachably fixed on the first adjustment platform toward the second adjustment platform, and a support for placing a focusing test chart is detachably fixed on the second adjustment platform.

[0006] Both the first and second adjustment platforms mentioned above include a three-axis adjustment table and a rotary table, which can be adjusted laterally, longitudinally, in height, and in the horizontal angle by adjusting screws.

[0007] As a further improvement, the base is provided with two parallel through slots along its length to form the track. A limiting part is provided in the through slot. The fixing bolt is threaded from the bottom of the through slot upward to the first adjustment platform and the second adjustment platform. The bolt head of the fixing bolt is housed inside the through slot and abuts against the limiting part.

[0008] As a further improvement, the aforementioned three-axis adjustment platform is equipped with the aforementioned rotary table, and the aforementioned rotary table is equipped with an adapter plate for fixing the aforementioned camera or support.

[0009] As a further improvement, the camera is equipped with a lens adapter for connecting different types of test lenses.

[0010] As a further improvement, the support is provided with a slot, a support plate is placed in the slot, the focusing test pattern is fixed on the support plate, and a clearance hole is opened in the middle of the support, through which the focusing test pattern is aligned with the test lens.

[0011] As a further improvement, a positioning groove is provided on one side of the aforementioned slot, and a positioning element is provided on the aforementioned support plate. When the support plate is placed in the aforementioned slot, the aforementioned positioning element fits into the aforementioned positioning groove.

[0012] As a further improvement, a through hole is provided in the middle of the positioning groove, and a positioning post is provided in the positioning member. When the support plate is placed in the slot, the positioning post passes through the through hole and extends out of the through hole.

[0013] As a further improvement, the support is square in shape, with its top surface and one side surface open to form the insertion port of the slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Firstly, this invention features a slide rail on a base, on which a first adjustment platform and a second adjustment platform are movably mounted. The camera (and test lens) and the focus test pattern are respectively mounted on the two adjustment platforms, and parallel movement is achieved via the track. The adjustment platforms are adjusted laterally, longitudinally, and vertically using adjusting screws. A rotating platform for angle adjustment is further provided on the adjustment platforms. Through these multi-dimensional adjustments, precise focusing of the test lens and the focus test pattern is achieved. The structure is simple and easy to install.

[0016] Secondly, the support of this utility model is provided with a slot for placing a support plate containing a focusing test pattern. The support plate and the support are positioned by a positioning component and a positioning groove, avoiding the randomness and error of manually replacing the support plate. On the other hand, the positioning component is provided with a positioning post that passes through a through hole in the positioning groove to further stabilize the support plate. When it is necessary to replace the focusing test pattern, the support plate is tilted by lifting the positioning post and extends out of the slot, which is convenient for manual handling and improves the overall testing efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

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

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0020] Figure 3 This is a longitudinal sectional view of the base in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the support and the support plate in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the support plate removed in this utility model.

[0023] Figure label:

[0024] 1-Base; 2-First adjustment platform; 3-Second adjustment platform; 4-Camera; 5-Test lens; 6-Support; 7-Support plate;

[0025] 11-Through groove; 11a-Limiting part; 12-Fixing bolt;

[0026] 21-Three-axis adjustment table; 22-Rotary table; 23-Adapter plate;

[0027] 41-Lens adapter;

[0028] 61-Slot; 62-Lean-out hole; 63-Positioning groove; 64-Through hole;

[0029] 71-Focusing test diagram; 72-Positioning component; 73-Positioning post. Detailed Implementation

[0030] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0031] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. The terms "part," "side," "end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 utility model.

[0032] like Figures 1-2As shown, this application provides a lens focusing device for actual shooting, including a base 1, a track on the base 1, and a first adjustment platform 2 and a second adjustment platform 3 movably mounted on the track. A camera 4 is detachably fixed to the first adjustment platform 2 toward the second adjustment platform 3. A test lens 5 is detachably connected to the camera 4 via a lens adapter 41. A support 6 for placing a focusing test diagram 71 is detachably fixed to the second adjustment platform 3. A support plate 7 is placed on the support 6, and the focusing test diagram 71 is fixed on the support plate 7. The centering, focusing, and actual shooting tests of the test lens 5 and the focusing test diagram 71 are performed through the track, the first adjustment platform 2, and the second adjustment platform 3. The camera 4 can be connected to test lenses 5 of different models and sizes through the lens adapter 41, which has strong versatility.

[0033] In one specific embodiment, such as Figure 3 As shown, the base 1 is a long strip of metal plate with two through slots 11 parallel to its length. Each through slot 11 has a limiting part 11a, the upper surface of which is flush with or lower than the upper surface of the base 1, ensuring flatness and allowing the first adjustment platform 2 and the second adjustment platform 3 to move smoothly. During installation, after placing the first adjustment platform 2 and the second adjustment platform 3 in suitable positions on the track, they are connected from the bottom up by threaded fixing bolts 12. When tightened, the upper end of the bolt head of the fixing bolt 12 abuts against the limiting part 11a, and the bolt head is retracted into the through slot 11, ensuring the bottom of the base 1 is flat and the entire device can be placed stably on the table. The fixing bolt 12 configuration makes fixing and disassembling the adjustment platforms more convenient, effectively reducing the time cost during device assembly and maintenance.

[0034] Preferably, the fastening bolts are not tightened first, allowing the first adjustment platform 2 and the second adjustment platform 3 to slide on the track. The distance between the test lens 5 and the focusing test diagram 71 is roughly adjusted until a suitable position is reached. Then, the fastening bolts are tightened to fix the lens.

[0035] like Figures 1-2 As shown, both the first adjustment platform 2 and the second adjustment platform 3 include a three-axis adjustment stage 21 and a rotary stage 22. The three-axis adjustment stage 21 includes three adjusting screws for horizontal, vertical, and height adjustments, respectively. By rotating the three adjusting screws, the test lens 5 is precisely aligned with the focusing test pattern 71. The rotary stage 22 is located at the upper end of the three-axis adjustment stage 21. Similarly, the rotary stage 22 is also adjusted by adjusting screws. The rotary stage 22 performs horizontal angle adjustments to align the calibration center of the focusing test pattern 71 with the optical axis of the test lens 5, further improving the alignment accuracy and compensating for errors caused by hardware conditions such as mold wear. Through the combined adjustment of the three-axis adjustment stage 21 and the rotary stage 22, the precise positioning of the lens and the test pattern can be completed quickly and efficiently, significantly improving the efficiency and reliability of the testing process.

[0036] Furthermore, such as Figures 1-2 As shown, the first adjustment platform 2 and the second adjustment platform 3 have a rotating table 22 equipped with an adapter plate 23 for fixing the camera 4 or the support 6. In one specific embodiment, the adapter plate 23 is fixedly connected to the rotating table 22 by threads, and threaded holes are provided on the upper surface and the side surface of the adapter plate 23. The camera 4 is fixed on the upper surface of the adapter plate 23, the support 6 is fixed on the side surface of the adapter plate 23, and the test lens 5 of the camera 4 is arranged facing the support 6 so that the lens is aligned with the support 6.

[0037] like Figure 4 As shown, the support 6 has a slot 61 perpendicular to the optical axis of the test lens 5. A support plate 7 is placed in the slot 61. A focusing test pattern 71 is fixed on the support plate 7. A clearance hole 62 is opened in the middle of the support 6. The focusing test pattern 71 is aligned with the test lens 5 through the clearance hole 62.

[0038] In one specific embodiment, the support 6 is square in shape, with its top surface and one of its sides open to form an insertion port for the slot 61, which facilitates the quick placement and removal of the support plate 7, improving operational convenience and testing efficiency.

[0039] like Figures 4-5 As shown, a positioning groove 63 is provided on one side of the slot 61, and a positioning element 72 is provided on the support plate 7. When the support plate 7 is placed in the slot 61, the positioning element 72 fits into the positioning groove 63, achieving precise positioning and avoiding the randomness and error of manually replacing the support plate 7. Furthermore, a through hole 64 is opened in the middle of the positioning groove 63, and a positioning post 73 is provided on the positioning element 72. When the support plate 7 is placed in the slot 61, the positioning post 73 passes through the through hole 64 and extends out of the through hole 64, which not only further stabilizes the insertion of the support 6 and the support plate 7, but also facilitates the removal of the support plate 7. Specifically, when it is necessary to replace the focusing test chart 71, by pushing the extended part of the positioning post 73, the support plate 7 is tilted as a whole. By holding the part of the support plate 7 that extends out of the slot 61 due to the tilt, the support plate 7 can be removed. The operation is convenient, saves labor costs, and improves testing efficiency.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lens focusing device, characterized in that, The utility model provides a kind of camera lens testing device, including base (1), the base (1) is provided with track, first adjusting platform (2) and second adjusting platform (3) are movably arranged on the track;The first adjusting platform (2) is detachably fixed with camera (4) and test lens (5) towards the second adjusting platform (3) direction, the second adjusting platform (3) is detachably fixed with support for placing focusing test chart (71); The first adjusting platform (2) and second adjusting platform (3) both include three-axis adjusting table (21) and rotary table (22), are adjusted by adjusting screw transversely, vertically, height and horizontal angle.

2. The lens focusing device for actual shooting as described in claim 1, characterized in that, The base (1) is provided with two through grooves (11) parallel along length direction, forms the track, the through groove (11) is provided with limiting portion (11a), fixed bolt (12) is screw-connected first adjusting platform (2) and second adjusting platform (3) from the bottom of the through groove (11) upwards, the bolt cap of fixed bolt (12) is received in the through groove (11) inside, and abuts against the limiting portion (11a).

3. The lens focusing device for actual shooting as described in claim 2, characterized in that, The three-axis adjusting table (21) is provided with the rotary table (22), the rotary table (22) is provided with adapter plate (23), for fixing the camera (4) or support (6).

4. The lens focusing device for actual shooting as described in claim 3, characterized in that, The camera (4) is provided with lens adapter (41), for connecting different models of test lens (5).

5. The lens focusing device for actual shooting as described in claim 1, characterized in that, The support (6) is provided with slot (61), the slot (61) is placed with support plate (7), the support plate (7) is fixed with focusing test chart (71), the support (6) is provided with let hole (62), and focusing test chart (71) is aligned test lens (5) through let hole (62).

6. The lens focusing device for actual shooting as described in claim 5, characterized in that, One side of the slot (61) is provided with positioning groove (63), and the support plate (7) is provided with positioning member (72). When the support plate (7) is placed in the slot (61), the positioning member (72) is fitted in the positioning groove (63).

7. The lens focusing device for actual shooting as described in claim 6, characterized in that, The positioning groove (63) is provided with through hole (64) in the middle, and the positioning member (72) is provided with positioning column (73). When the support plate (7) is placed in the slot (61), the positioning column (73) passes through the through hole (64) and extends out of the through hole (64).

8. The lens focusing device for actual shooting as described in claim 7, characterized in that, The shape of the support (6) is square, and the top surface and one side surface of the support (6) are open, forming the insertion port of the slot (61).

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