Positive and negative optical element coordinate calibration mechanism

Abstract

The utility model relates to the technical field of optical element calibration, and discloses a front and back optical element coordinate calibration mechanism which comprises an X-axis linear module, and a first CCD, a second CCD, a first DMD, a second DMD, a third DMD and a fourth DMD are installed on an installation frame of the X-axis linear module. An X-axis supporting plate is installed on the base, a Y-axis linear module is installed on the X-axis supporting plate, a marble Y-axis calibration table is fixedly arranged on a moving seat B on the Y-axis linear module, an upward bottom calibration camera, a downward bottom calibration camera and a calibration plate are installed on the marble Y-axis calibration table, and a third CCD and a combined DMD are installed on the reverse side of the X-axis supporting plate. According to the utility model, by using the calibration plate and the calibration camera, the position relation between the optical elements can be accurately measured and calculated, the positioning and alignment of the optical system are ensured to be accurate, and by adopting a calibration mode of matching machinery with the optical elements, the calibration speed and efficiency can be improved, and the time and the labor cost can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical element calibration, and in particular relates to a mechanism for calibrating the coordinates of a front and back optical element. Background Art

[0002] In the production and manufacturing process of optical components, quality control and inspection of optical components are very important. Optical component coordinate calibration can be used to ensure that the position accuracy and performance of the produced optical components meet the requirements, thereby ensuring the quality and consistency of the product.

[0003] Traditional calibration methods usually only require calibration for one side of the optical element. However, when optical elements are integrated on both the front and back sides, it is necessary to calibrate the optical elements on both sides at the same time, which increases the difficulty and complexity of the calibration. The positional relationship of the optical elements on both sides in space is relatively complex, and the mutual influence and interference between the optical elements need to be considered. Traditional calibration methods may find it difficult to accurately determine the positional relationship between the optical elements on both sides, thereby affecting the accuracy of the calibration. Traditional calibration methods may only be applicable to the specific case of one side of the optical element. For optical elements used on both sides at the same time, different calibration methods need to be used or the calibration parameters need to be adjusted to achieve accurate calibration. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model proposes a mechanism for calibrating the coordinates of the front and back optical elements.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A mechanism for calibrating the coordinates of a front and back optical element comprises an X-axis linear module, wherein a moving seat A on the X-axis linear module is provided with a mounting frame and an X-axis support plate located below the mounting frame;

[0007] The mounting frame is mounted with a first CCD, a second CCD, a first DMD, a second DMD, a third DMD and a fourth DMD;

[0008] A Y-axis linear module is installed on the X-axis support plate, and a marble Y-axis calibration table is fixed on the movable seat B on the Y-axis linear module, and an upward bottom calibration camera, a downward bottom calibration camera and a calibration plate are installed on the marble Y-axis calibration table;

[0009] The third CCD and the combined DMD are installed on the reverse side of the X-axis support plate.

[0010] Preferably, the combined DMD includes a fifth DMD, a sixth DMD, a seventh DMD and an eighth DMD.

[0011] Preferably, the X-axis linear module is arranged on an X-axis marble platform, and the X-axis marble platform is fixed on the top of the marble platform base.

[0012] Compared with the prior art, the technical effects and advantages of the utility model are:

[0013] The mechanism for calibrating the coordinates of the optical elements on the front and back sides, during the calibration process, first uses the calibration plate to calibrate the focal plane and magnification of the first CCD and the second CCD, and then uses the upward bottom calibration camera to calibrate the first DMD, the second DMD, the third DMD, and the fourth DMD to calculate the positional relationship between them. Then, the upward bottom calibration camera is used to calibrate the positional relationship between the first CCD and the second CCD. The DMD and CCD on the back side are also calibrated through similar steps. Finally, the calibration plate is used to determine the positional relationship between the CCD and DMD on the front and back sides.

[0014] The coordinate calibration mechanism for optical elements on both sides can accurately measure and calculate the positional relationship between optical elements by using a calibration plate and a calibration camera, ensuring accurate positioning and alignment of the optical system. The calibration method using mechanical and optical elements can improve the speed and efficiency of calibration, saving time and labor costs. The stability and fixity of the optical elements are ensured by using structures such as a marble platform base and a specially designed calibration table, thereby ensuring the reliability and accuracy of the calibration. The mechanism can be applied to optical elements of different types and specifications, can be adjusted and expanded according to specific needs, and has high flexibility. The calibration mechanism can be applied to the assembly and calibration processes of various optical elements, and is widely used in optical imaging, measurement, and detection fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0016] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle;

[0017] Figure 3 It is a structural schematic diagram of the X-axis support plate of the utility model.

[0018] In the figure: 1. first DMD; 2. second DMD; 3. third DMD; 4. fourth DMD; 5. first CCD; 6. second CCD; 7. X-axis marble platform; 8. upward bottom calibration camera; 9. calibration plate; 10. third CCD; 11. combined DMD; 12. downward bottom calibration camera; 13. marble Y-axis calibration table; 14. marble platform base; 15. X-axis linear module; 16. moving seat A; 17. mounting frame; 18. X-axis support plate; 19. Y-axis linear module. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The following is combined with Figure 1-3 To further explain this application in detail,

[0021] The embodiment of the present application discloses a mechanism for calibrating the coordinates of the front and back optical elements, including a marble platform base 14, an X-axis marble platform 7 is fixedly provided on the top of the marble platform base 14, an X-axis linear module 15 is provided on the X-axis marble platform 7, a mounting frame 17 and an X-axis support plate 18 located below the mounting frame 17 are provided on the moving seat A16 on the X-axis linear module 15;

[0022] The mounting frame 17 is mounted with a first CCD5, a second CCD6, a first DMD1, a second DMD2, a third DMD3 and a fourth DMD4;

[0023] A Y-axis linear module 19 is installed on the X-axis support plate 18, and a marble Y-axis calibration platform 13 is fixed on the movable seat B on the Y-axis linear module 19, and an upward bottom calibration camera 8, a downward bottom calibration camera 12 and a calibration plate 9 are installed on the marble Y-axis calibration platform 13;

[0024] The third CCD 10 and the combined DMD 11 are mounted on the reverse side of the X-axis support plate 18 .

[0025] The combined DMD 11 includes a fifth DMD, a sixth DMD, a seventh DMD, and an eighth DMD.

[0026] The front side of the optical element coordinate calibration mechanism is equipped with a first CCD5, a second CCD6, a first DMD1, a second DMD2, a third DMD3, and a fourth DMD4 in sequence, and the back side is equipped with a third CCD10, a fifth DMD, a sixth DMD, a seventh DMD, and an eighth DMD. An upward bottom calibration camera 8 and a downward bottom calibration camera 12 are installed on a marble Y-axis calibration platform 13.

[0027] During calibration, the calibration plate 9 is first used to calibrate the focal plane and magnification of the first CCD5 and the second CCD6 to see if they are within the requirements, and then the upward bottom calibration camera 8 is used to calibrate the first DMD1, the second DMD2, the third DMD3, and the fourth DMD4 to calculate the positional relationship between each two, and then the upward bottom calibration camera 8 is used to calibrate the positional relationship between the first CCD5 and the second CCD6 to see if they are within the requirements, and finally the relative relationship between the first CCD5, the second CCD6 and any two of the first DMD1, the second DMD2, the third DMD3, and the fourth DMD4 is calculated by software;

[0028] The calibration of the reverse DMD and CCD is similar, and the positional relationship between the third CCD 10 and any two of the fifth DMD, the sixth DMD, the seventh DMD, and the eighth DMD can be obtained by using the calibration plate 9 and the downward bottom calibration camera 12;

[0029] Finally, we need to find out the positional relationship between the CCD and DMD on the front and back sides, use the calibration plate 9 to calibrate the relationship between the first CCD5 and the third CCD10, and finally use the software to calculate the relative relationship between any two of the first CCD5, the second CCD6, the first DMD1, the second DMD2, the third DMD3, the fourth DMD4 and the third CCD10, the fifth DMD, the sixth DMD, the seventh DMD, and the eighth DMD;

[0030] The calibration principle of optical components is to determine the positional relationship between different optical components by using a calibration plate 9 and a calibration camera so as to correctly position them in the system. The calibration process requires placing the optical components on a marble Y-axis calibration table 13 and using corresponding equipment for calibration operations.

[0031] By using the calibration plate 9 and the calibration camera, the positional relationship between optical elements can be accurately measured and calculated to ensure that the positioning and alignment of the optical system are accurate. Since the calibration process uses a standardized calibration plate 9 and camera, a repeatable calibration process can be achieved, which improves the reliability and stability of the calibration results. The design of this mechanism can be applicable to optical elements of various types and specifications, has high flexibility and adaptability, and can meet the needs of different application scenarios. Through precise calibration, errors in the optical system can be corrected, the accuracy and clarity of imaging can be improved, and the accuracy of image acquisition and processing can be guaranteed, thereby improving the performance and accuracy of the entire system.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanism for calibrating the coordinates of optical elements on both sides, characterized in that: It comprises an X-axis linear module (15), wherein a moving seat A (16) on the X-axis linear module (15) is provided with a mounting frame (17) and an X-axis support plate (18) located below the mounting frame (17); The mounting frame (17) is mounted with a first CCD (5), a second CCD (6), a first DMD (1), a second DMD (2), a third DMD (3) and a fourth DMD (4); A Y-axis linear module (19) is installed on the X-axis support plate (18); a marble Y-axis calibration platform (13) is fixedly provided on a movable seat B on the Y-axis linear module (19); an upward bottom calibration camera (8), a downward bottom calibration camera (12) and a calibration plate (9) are installed on the marble Y-axis calibration platform (13); The back surface of the X-axis support plate (18) is equipped with a third CCD (10) and a combined DMD (11).

2. The mechanism for calibrating the coordinates of the front and back optical elements according to claim 1, characterized in that: The combined DMD (11) includes a fifth DMD, a sixth DMD, a seventh DMD and an eighth DMD.

3. The mechanism for calibrating the coordinates of the optical element on both sides according to claim 1, characterized in that: The X-axis linear module (15) is arranged on the X-axis marble platform (7), and the X-axis marble platform (7) is fixed on the top of the marble platform base (14).

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