A device and method for measuring magnification of a lens based on flyback compensation

Abstract

The present invention relates to the field of photoelectric scanning technology, and discloses a device and a test method for measuring the magnification of a retrace compensation lens. The measuring device includes a host computer, an electric control turntable, a retrace compensation component and a collimator. The retrace compensation component is set on the electric control turntable, a first reference point is set on the collimator, and a second reference point is set on the optical transmission path of the retrace compensation component. The host computer controls the electric control turntable to drive the retrace compensation component to rotate as a whole to a first preset angle value. The retrace compensation component rotates to a second detection angle value according to the positions of the first reference point and the second reference point. The magnification of the retrace compensation component can be calculated based on the first preset angle value and the second detection angle value. Through such a setting, the requirements for faster, more accurate and simpler measurement of the magnification of the retrace compensation component are met.

Description

Technical Field

[0001] The invention relates to the technical field of photoelectric cyclic scanning, and in particular to a device and a test method for measuring the magnification of a retrace compensation lens. Background Art

[0002] The flyback compensation lens is an important part of the optoelectronic search and tracking system. In the process of optoelectronic search and imaging, the flyback compensation lens uses image shift compensation technology to improve the imaging quality. As a part of the optoelectronic search and tracking system, the flyback compensation lens realizes the motion control of the optical element through the swing mirror inside the flyback compensation lens, so that the image moves in the opposite direction in the image plane, and the object and image are relatively stable within the detector imaging integration time, so as to complete the clear imaging of the target. At present, this technology is widely used in the fields of security, optoelectronic pods, aerospace, etc.

[0003] Whether the optoelectronic search and tracking system can clearly image the target during the search depends on whether the swing mirror speed setting inside the retrace compensation lens is reasonable. The setting of the swing mirror speed depends on the magnification of the lens. If the error between the lens magnification and the actual value is large, the calculated compensation speed of the swing mirror will differ greatly from the actual value, causing the image to be blurred and smeared during the search process, resulting in a serious degradation of image quality. Therefore, the measurement of the lens magnification is a very important link, because it directly affects the compensation speed of the swing mirror and thus affects the clarity of the image of the infrared device during the search process.

[0004] Traditionally, the lens magnification can only be determined by optical transmission function during lens design. The lens magnification is a theoretical value. Due to the error in the assembly of optical lenses and the large influence of temperature on the lens, the error of the swing mirror compensation speed determined by the magnification is large, resulting in unclear images. In actual application, it is often necessary to continue to adjust the swing mirror speed by observing the infrared image searched. The adjustment method is complicated and requires the cooperation of the photoelectric search turntable for adjustment, which makes the measurement time long and the labor cost high. Therefore, a simpler, faster and more accurate measurement device and method for measuring the lens magnification are needed. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for measuring the magnification of a lens based on flyback compensation. By simulating a real working environment, the lens magnification can be measured in the most efficient way by rotating the platform and controlling the flyback compensation component. This device not only reduces the measurement time and cost, but also improves the accuracy and greatly improves the image clarity during photoelectric search and system search.

[0006] To solve the above problems, the first aspect of the present invention provides a device for measuring the magnification of a lens based on flyback compensation, comprising: a host computer, an electric control turntable, a flyback compensation component and a collimator;

[0007] The host computer is electrically connected to the electric control turntable;

[0008] The retrace compensation component is arranged on the electric control turntable, the incident light enters the retrace compensation component through the collimator, and the retrace compensation component forms an image of the incident light;

[0009] The collimator is provided with a first reference point on the light transmission path, and the retrace compensation component is provided with a second reference point on the light transmission path, and the first reference point and the second reference point coincide with each other in an initial state;

[0010] The host computer controls the electric control turntable to rotate to a first preset angle value, controls the retrace compensation component to rotate to a second detection angle value, so that the first reference point and the second reference point coincide again, and calculates the magnification of the retrace compensation component based on the first preset angle value and the second detection angle value.

[0011] Preferably, the flyback compensation component is provided with an optical lens 、 A driving member and a control assembly, wherein the optical lens is close to a side of the collimator, and the driving member is provided with a swing mirror, and the swing mirror is arranged on a side of the optical lens away from the collimator;

[0012] The driving component drives the swing mirror to rotate, and when the first reference point and the second reference point coincide with each other, the control component obtains a second detection angle value of the swing mirror rotation, and the control component transmits the second detection angle value to the host computer, and the host computer calculates the magnification of the retrace compensation component according to the first preset angle value and the second detection angle value.

[0013] Preferably, the driving component includes a driver and a swing rod, the swing mirror is fixedly connected to the swing rod, and the control component controls the driver to drive the swing rod and the swing mirror to rotate.

[0014] Preferably, the retrace compensation component further includes a detector, which is disposed at a terminal of an optical transmission path within the retrace compensation component, the control component is connected to the detector, and the first reference point and the second reference point are imaged on the detector.

[0015] Preferably, an angle sensor is provided on the swing arm, the angle sensor is connected to the control component, the angle sensor is used to detect a second detection angle value of the swing mirror, and the angle sensor transmits the second detection angle value to the control component.

[0016] Preferably, an optical slide is provided between the electrically controlled turntable and the retrace compensation component, and the optical slide drives the retrace compensation component to rotate horizontally and in elevation.

[0017] Preferably, the electrically controlled turntable further comprises a fixture bracket disposed between the optical slide table and the retrace compensation component, the fixture bracket and the optical slide table are fixedly connected, and the retrace compensation component and the fixture bracket are connected.

[0018] According to another aspect of the present invention, a measurement method is provided, wherein imaging points of a first reference point and a second reference point coincide with each other in an initial state, and the method comprises the following steps:

[0019] The host computer controls the electric control turntable to rotate to a first preset angle value;

[0020] The control component controls the swing mirror to rotate, and when the first reference point and the second reference point coincide again, obtains a second detection angle value of the swing mirror rotation and sends it to the host computer;

[0021] The host computer calculates the amplification factor of the flyback compensation component based on the first preset angle value and the second detection angle value.

[0022] Preferably, the control component controls the swing mirror to rotate, and when the first reference point and the second reference point coincide again, obtains a second detection angle value of the swing mirror rotation, and sends it to the host computer, including:

[0023] The control component controls the swing rod to drive the swing mirror to rotate until the first reference point and the second reference point coincide with each other;

[0024] The control component obtains the current rotation angle of the swing mirror through the sensor on the swing rod, and takes the current rotation angle of the swing mirror as the second detection angle value;

[0025] The control component sends the second detection angle value to the host computer.

[0026] Preferably, the host computer calculates the magnification of the retrace compensation component based on the first preset angle value and the second detection angle value, including:

[0027] The upper computer calculates the magnification of the flyback compensation component as follows: M = θ / γ;

[0028] Wherein, M is the magnification of the retrace compensation component, γ is the first preset angle value, and θ is the second detection angle value.

[0029] The retrace compensation component is set on the electric control turntable, the first reference point is set on the collimator, the retrace compensation component is set on the light transmission path, the upper computer controls the electric control turntable to drive the retrace compensation component to rotate the first preset angle value as a whole, the retrace compensation component rotates the second detection angle value according to the positions of the first reference point and the second reference point, and the magnification of the retrace compensation component can be calculated based on the first preset angle value and the second detection angle value. Through such a setting, the requirements for faster, more accurate and simpler measurement of the magnification of the retrace compensation component are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a connection diagram of a measuring device according to an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of the structure of a flyback compensation component according to an embodiment of the present invention;

[0032] Figure 3 is an exploded view of a flyback compensation assembly according to one embodiment of the present invention;

[0033] Figure 4 is a layout diagram of a retrace compensation assembly, an electric-controlled turntable, and a collimator according to an embodiment of the present invention;

[0034] Figure 5 is a flow chart of a measurement method according to an embodiment of the present invention;

[0035] Figure 6 It is a schematic diagram of the initial positions of the first crosshairs and the second crosshairs;

[0036] Figure 7 This is a schematic diagram of the overlap of the corrected positions of the first crosshairs and the second crosshairs;

[0037] Figure 8 It is a schematic diagram of the positions of the first crosshairs and the second crosshairs after the electric-controlled turntable rotates;

[0038] Fig. 9 It is a schematic diagram of the positions of the first crosshairs and the second crosshairs after the retrace compensation component rotates.

[0039] Reference numerals:

[0040] 1. Host computer;

[0041] 2. Electric control turntable; 21. Optical slide; 22. Tooling bracket;

[0042] 3. flyback compensation component; 31. optical lens; 32. driving component; 32a. swing mirror; 321. driver; 322. swing rod; 33. control component; 34. detector;

[0043] 4. Parallel light tube;

[0044] A. First crosshair; B. Second crosshair. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0046] The accompanying drawings show schematic diagrams of layer structures according to embodiments of the present invention. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clarity. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0047] Combination Figure 1 , Figure 1The present invention is a connection diagram of a magnification measurement device based on a retrace compensation lens according to an embodiment of the present invention, wherein the measurement device comprises a host computer 1, an electric-controlled turntable 2, a retrace compensation component 3 and a collimator 4. The host computer 1 is electrically connected to the electric-controlled turntable 2; the retrace compensation component 3 is arranged on the electric-controlled turntable 2, and the incident light enters the retrace compensation component 3 through the collimator 4, and the retrace compensation component 3 forms an image of the incident light; the collimator 4 is provided with a first reference point on the optical transmission path, and the retrace compensation component 3 is provided with a second reference point on the optical transmission path, and the first reference point and the second reference point coincide with each other in the initial state; the host computer 1 controls the electric-controlled turntable 2 to rotate to a first preset angle value, and controls the retrace compensation component 3 to rotate to a second detection angle value, so that the first reference point and the second reference point coincide with each other again, and the magnification of the retrace compensation component 3 is calculated based on the first preset angle value and the second detection angle value. Through such a setting, when the first reference point and the second reference point coincide, the first preset angle value is input to the upper computer 1, the upper computer 1 controls the electric control turntable 2 to rotate, and the electric control turntable 2 drives the retrace compensation component 3 to rotate the first preset angle value as a whole, at which time the first reference point and the second reference point deviate in the imaging; the retrace compensation component 3 is then rotated by the second detection angle value, so that the first reference point and the second reference point coincide again, the second detection angle value of the retrace compensation component 3 is detected and transmitted to the upper computer 1, and the upper computer 1 calculates the magnification of the retrace compensation component 3 according to the first preset angle value and the second detection angle value. The power source for the retrace compensation component 3 to rotate the second detection angle value is not limited here, and it can be provided by the upper computer 1, or the retrace compensation component 3 itself is connected to a separate power supply; the acquisition method of the second detection angle value is also not limited, and optionally, an angle or displacement sensor is set in the retrace compensation component 3, and the change value obtained by the sensor is uploaded to the retrace compensation component 3 or the upper computer 1 to complete the calculation or detection of the second detection angle value.

[0048] It should be noted that the second detection angle value of the retrace compensation component 3 is achieved by rotating the internal structure. The specific rotation structure of the retrace compensation component 3 is not limited here. It can be by setting a lens on the optical transmission path, adjusting the lens to refract the incident light; or setting a reflector on the optical transmission path, adjusting the angle of the reflector to change the reflection path of the incident light, etc., as long as the retrace compensation component 3 can be rotated through the internal structure to achieve the first reference point and the second reference point coincide again. In addition, the light source here can be in the form of visible light, infrared or thermal imaging.

[0049] Combination Figures 1 to 4In a preferred case, an optical lens 31, a driving component 32 and a control component 33 are provided on the retrace compensation component 3, the optical lens 31 is close to the side of the collimator 4, and a swing mirror 32a is provided on the driving component 32, and the swing mirror 32a is arranged on the side of the optical lens 31 away from the collimator 4; the driving component 32 drives the swing mirror 32a to rotate, and when the first reference point and the second reference point coincide, the control component 33 obtains a second detection angle value of the rotation of the swing mirror 32a, and the control component 33 transmits the second detection angle value to the host computer 1, and the host computer 1 calculates the magnification of the retrace compensation component 3 according to the first preset angle value and the second detection angle value. With such an arrangement, the light source passing through the collimator 4 enters the retrace compensation component 3 through the optical lens 31. When the first reference point and the second reference point coincide with each other, that is, the light transmission path of the first reference point on the collimator 4 and the light transmission path of the second reference point on the retrace compensation component 3 coincide with each other, both enter the retrace compensation component 3 along the center position of the optical lens 31. After the electrically controlled turntable 2 drives the retrace compensation component 3 to rotate by a first preset angle value, the light transmission path of the first reference point deviates relative to the light transmission path of the second reference point. At this time, the first reference point and the second reference point are at the center of the retrace compensation component. After the optical path of 3 is reflected by the oscillating mirror 32a, the optical path terminals of the first reference point and the second reference point are not in the same position; the driving component 32 drives the oscillating mirror 32a to rotate, and when the oscillating mirror 32a rotates to a certain angle, the optical paths of the first reference point and the second reference point are reflected by the oscillating mirror 32a, and the two optical paths overlap at the optical path terminal of the retrace compensation component 3, and the rotation angle of the oscillating mirror 32a at this time is the second detection angle value; the control component 33 obtains the second detection angle value and transmits it to the host computer 1, and the host computer 1 calculates the magnification of the retrace compensation component 3 according to the first preset angle value and the second detection angle value.

[0050] It should be noted that the power source of the driving component 32 is not limited here, and the power source can be provided by the host computer 1 or connected to a separate power supply. The driving method of the driving component 32 can be to set a driving component 32 inside the retrace compensation component 3 to rotate the pendulum mirror 32a, or to use a control component 33 with a driving function, which can drive the pendulum mirror 32a to rotate and obtain the second detection angle value.

[0051] In a preferred case, the driving member 32 includes a driver 321 and a swing rod 322, the swing mirror 32a is fixedly connected to the swing rod 322, and the control component 33 controls the driver 321 to drive the swing rod 322 and the swing mirror 32a to rotate. Through such a setting, the driver 321 sets the swing mirror 32a on the swing rod 322 on the light transmission path at a position close to the control component 33, and the swing mirror 32a can be rotated by controlling the rotation of the swing rod 322, thereby avoiding the possibility of damage and measurement error to 32a caused by directly driving the swing mirror 32a. Further, an angle sensor is provided on the swing rod 322, and the angle sensor is connected to the control component 33. The angle sensor is used to detect the second detection angle value of the swing mirror 32a, and the angle sensor transmits the second detection angle value to the control component 33. The angle sensor is set on the swing rod 322, and the rotation angle of the swing rod 322 can be directly detected by the angle sensor, that is, the second detection angle value of the rotation of the swing mirror 32a is directly obtained, so that the angle detected by the angle sensor is more accurate.

[0052] Combination Figure 3 , Figure 4 and Figure 6 In one embodiment provided by the present invention, the retrace compensation component 3 further includes a detector 34, which is arranged at the terminal of the optical transmission path in the retrace compensation component 3, the control component 33 is connected to the detector 34, and the first reference point and the second reference point are imaged on the detector 34. The first reference point on the collimator 4 is a heating crosshair, and the heat of the heating crosshair reaches the terminal of the optical transmission path through the optical lens 31 of the retrace compensation component 3. The detector 34 at the terminal obtains the position of the heating crosshair phase through infrared sensing, and the second reference point is set as an ordinary marking crosshair, which is set at the center of the optical lens 31. The first reference point and the second reference point finally present the final position on the detector 34 through the optical transmission path and are imaged on the detector 34. In one embodiment, the detector 34 can optionally adopt an infrared detector, and the photoelectric conversion is performed by the pixel on the focal plane of the infrared detector, thereby realizing infrared thermal imaging. When the infrared radiation emitted by the collimator 4 is irradiated to the focal plane of the detector 34 through the retrace compensation component 3, each pixel absorbs the infrared radiation energy and generates an electrical signal, and the detector 34 collects and processes the electrical signal, thereby obtaining the imaging of the heating crosshair of the collimator. like Figure 6 As shown, Figure 6It is a schematic diagram of the initial positions of the first reference point and the second reference point on the imaging after the retrace compensation component 3 is installed on the electric control turntable 2, including the imaging first crosshair A of the heating crosshair on the collimator 4, and the second crosshair B that is always located at the imaging center. Preferably, the detector 34 converts the image into a video signal, and the video signal is used to dynamically monitor the positions of the first crosshair A and the second crosshair B, and the control component 33 transmits the video signal to the host computer 1. Through such a setting, the relative positions of the first crosshair A and the second crosshair B can be observed in real time, which is convenient for adjustment and improves the measurement efficiency.

[0053] Combination Figure 4 In a preferred case, an optical slide 21 is provided between the electrically controlled turntable 2 and the retrace compensation component 3, and the optical slide 21 drives the retrace compensation component 3 to rotate horizontally and in pitch. Through this optical slide 21, the retrace compensation component 3 can rotate together with the optical slide 21 or realize the pitch rotation of the retrace compensation component 3. Through such a setting, after the retrace compensation component 3 is installed, the positions of the first reference point and the second reference point can be adjusted by the horizontal rotation of the optical slide 21 or by driving the retrace compensation component 3 to rotate in pitch, so that the first reference point and the second reference point coincide. The specific structural form of the optical slide is not limited here, and it is sufficient to adjust the position of the second reference point in the retrace compensation component 3. Further, the electrically controlled turntable 2 also includes a tooling bracket 22 arranged between the optical slide 21 and the retrace compensation component 3, the tooling bracket 22 is fixedly connected to the optical slide 21, and the retrace compensation component 3 is connected to the tooling bracket 22. Optionally, the height of the tooling bracket 22 is adjustable. Through this tooling bracket 22, the installation height of the retrace compensation component 3 is more flexible. During the initial overlap of the first reference point and the second reference point, the tooling bracket 22 can be used to make the optical lens 31 and the light transmission path of the retrace compensation component 3 as close to the horizontal as possible, which is more conducive to improving the accuracy of the measurement results.

[0054] Combination Figure 5 Another aspect of the present invention provides a method for measuring the magnification of a retrace compensation lens, wherein the imaging points of a first reference point and a second reference point coincide with each other in an initial state, and the method comprises the following steps: a host computer 1 controls an electric-controlled turntable 2 to rotate by a first preset angle value; a control component 33 controls a swing mirror 32a to rotate, and when the first reference point and the second reference point coincide with each other again, a second detection angle value of the swing mirror rotation is obtained and sent to the host computer 1; the host computer 1 calculates the magnification of the retrace compensation component 3 based on the first preset angle value and the second detection angle value.

[0055] In a preferred situation, the control component 33 controls the rotation of the swing mirror 32a. When the first reference point and the second reference point coincide with each other again, a second detection angle value of the rotation of the swing mirror is obtained and sent to the host computer 1, including: the control component 33 controls the swing rod 322 to drive the swing mirror 32a to rotate until the first reference point and the second reference point coincide with each other; the control component 33 obtains the current rotation angle of the swing mirror through the sensor on the swing rod 322, and takes the current rotation angle of the swing mirror 32a as the second detection angle value; the control component 33 sends the second detection angle value to the host computer 1.

[0056] In a preferred case, the upper computer 1 calculates the magnification of the retrace compensation component 3 based on the first preset angle value and the second detection angle value, including: the upper computer 1 calculates the magnification of the retrace compensation component 3 according to the formula: M = θ / γ; wherein M is the magnification of the retrace compensation component 3, γ is the first preset angle value, and θ is the second detection angle value.

[0057] In one embodiment of a method for measuring magnification of a flyback compensation lens provided by the present invention, as Figures 5 to 9 As shown, Figures 6 to 9 During the measurement process, the position of the first crosshair A and the second crosshair B is imaged. After the retrace compensation component 3 is installed on the electric control turntable 2, the position of the first crosshair A and the second crosshair B is as follows: Figure 6 As shown, at this time, by adjusting the electric control turntable 2 and the optical slide 21, the first crosshairs A and the second crosshairs B are overlapped in the imaging, as shown in FIG. Figure 7 As shown; the host computer 1 controls the electric control turntable 2 to rotate horizontally to a first preset angle value, so that the first crosshair A deviates from the second crosshair B, such as Figure 8 By rotating the swing mirror 32a in the retrace compensation assembly 3, when the first crosshair A and the second crosshair B coincide with each other again, as shown Fig. 9 As shown, it means that the retrace compensation component 3 has completed the correction of the first preset angle value of the electric control turntable 2. At this time, the second detection angle value of the swing mirror 21a is obtained, and the host computer 1 calculates the magnification of the retrace compensation component 3 through the first preset angle value and the second detection angle value.

[0058] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A device for measuring the magnification of a lens based on flyback compensation, characterized in that: include: A host computer (1), an electric control turntable (2), a flyback compensation component (3) and a collimator (4); The host computer (1) is electrically connected to the electric control turntable (2); The retrace compensation component (3) is arranged on the electrically controlled turntable (2), and the incident light enters the retrace compensation component (3) through the collimator (4), and the retrace compensation component (3) forms an image of the incident light; The collimator (4) is provided with a first reference point on the light transmission path, and the retrace compensation component (3) is provided with a second reference point on the light transmission path, and the first reference point and the second reference point coincide with each other in an initial state; The host computer (1) controls the electric control turntable (2) to rotate to a first preset angle value, and controls the retrace compensation component (3) to rotate to a second detection angle value, so that the first reference point and the second reference point coincide with each other again, and calculates the magnification of the retrace compensation component (3) based on the first preset angle value and the second detection angle value.

2. The device for measuring magnification of a flyback compensation lens according to claim 1, characterized in that: The retrace compensation component (3) is provided with an optical lens (31) 、 A driving component (32) and a control component (33), the optical lens (31) being close to a side of the collimator (4), the driving component (32) being provided with a swing mirror (32a), and the swing mirror (32a) being arranged on a side of the optical lens (31) being away from the collimator (4); The driving component (32) drives the swing mirror (32a) to rotate, and when the first reference point and the second reference point coincide, the control component (33) obtains a second detection angle value of the rotation of the swing mirror (32a), and the control component (33) transmits the second detection angle value to the host computer (1), and the host computer (1) calculates the magnification of the retrace compensation component (3) according to the first preset angle value and the second detection angle value.

3. The device for measuring magnification of a flyback compensation lens according to claim 2, characterized in that: The driving component (32) comprises a driver (321) and a swing rod (322); the swing mirror (32a) is fixedly connected to the swing rod (322); and the control component (33) controls the driver (321) to drive the swing rod (322) and the swing mirror (32a) to rotate.

4. The device for measuring magnification of a flyback compensation lens according to claim 3, characterized in that: The retrace compensation component (3) further comprises a detector (34), wherein the detector (34) is arranged at the terminal of the optical transmission path in the retrace compensation component (3), the control component (33) is connected to the detector (34), and the first reference point and the second reference point are imaged on the detector (34).

5. The device for measuring magnification of a flyback compensation lens according to claim 4, characterized in that: An angle sensor is provided on the swing rod (322), the angle sensor is connected to the control component (33), the angle sensor is used to detect a second detection angle value of the swing mirror (32a), and the angle sensor transmits the second detection angle value to the control component (33).

6. The device for measuring magnification of a flyback compensation lens according to claim 1, characterized in that: An optical slide table (21) is provided between the electrically controlled turntable (2) and the retrace compensation component (3), and the optical slide table (21) drives the retrace compensation component (3) to rotate horizontally and in elevation.

7. The device for measuring magnification of a flyback compensation lens according to claim 6, characterized in that: The electrically controlled turntable (2) further comprises a tooling bracket (22) arranged between the optical slide table (21) and the retrace compensation component (3); the tooling bracket (22) and the optical slide table (21) are fixedly connected, and the retrace compensation component (3) and the tooling bracket (22) are connected.

8. A method for measuring the magnification of a flyback compensation lens, using the device for measuring the magnification of a flyback compensation lens according to any one of claims 2 to 7, characterized in that: The imaging points of the first reference point and the second reference point in the initial state coincide with each other, comprising the following steps: The upper computer (1) controls the electric control turntable (2) to rotate to a first preset angle value; The control component (33) controls the swing mirror (32a) to rotate, and when the first reference point and the second reference point coincide again, obtains a second detection angle value of the swing mirror rotation and sends it to the host computer (1); The host computer (1) calculates the amplification factor of the retrace compensation component (3) based on the first preset angle value and the second detection angle value.

9. The method for measuring magnification of a flyback compensation lens according to claim 8, characterized in that: The control component (33) controls the swing mirror (32a) to rotate, and when the first reference point and the second reference point coincide again, obtains a second detection angle value of the swing mirror rotation and sends it to the host computer (1), including: The control component (33) controls the swing rod (322) to drive the swing mirror (32a) to rotate until the first reference point and the second reference point coincide with each other; The control component (33) obtains the current rotation angle of the swing mirror through the sensor on the swing rod (322), and takes the current rotation angle of the swing mirror (32a) as the second detection angle value; The control component (33) sends the second detection angle value to the host computer (1).

10. The method for measuring magnification of a flyback compensation lens according to claim 8, characterized in that: The host computer (1) calculates the magnification of the retrace compensation component (3) based on the first preset angle value and the second detection angle value, including: The upper computer (1) calculates the magnification of the retrace compensation component (3) as follows: M = θ / γ; Wherein M is the magnification of the retrace compensation component (3), γ is the first preset angle value, and θ is the second detection angle value.

Images