Short-focus visible light parallel light generating device for testing and assembling large-aperture X-ray focus lens

Abstract

The invention relates to the technical field of X-ray focus lens testing, in particular to a short-focus visible light parallel light generating device for testing and assembling a large-caliber X-ray focus lens, which comprises a tail fiber laser and a large-caliber short-focus parabolic mirror, and a light outlet at the tail end of an optical fiber of the tail fiber laser is positioned at the focus of the large-caliber short-focus parabolic mirror. Output light of the tail fiber laser is transmitted through the optical fiber and forms a point light source at a light outlet at the tail end of the optical fiber, and output light of the point light source is reflected by the large-caliber short-focus parabolic mirror to form parallel light beams to be output. The small-caliber tail fiber laser is matched with the large-caliber short-focus parabolic mirror to form the short-focus visible light parallel light generating device, the light source resolution precision is improved by designing the caliber and the position of a light outlet at the tail end of an optical fiber, the large-caliber X-ray focusing mirror is tested and assembled by using the short-focus visible light parallel light generating device, and the detection accuracy of the X-ray focusing mirror is improved. The space height of the installation and adjustment system can be obviously reduced, the test precision requirement can be ensured, the device can adapt to the field, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray focusing mirror testing, and in particular to a short-focus visible light parallel light generating device for testing and assembling large-aperture X-ray focusing mirrors. Background Art

[0002] During the performance testing and assembly integration of large-aperture X-ray focusing mirrors, a large-aperture parallel light source is an essential component of the system, providing a stable, fully illuminated parallel light beam for testing and assembly. X-ray focusing mirror testing and adjustment typically utilizes X-rays, visible light, and ultraviolet wavelengths to test the mirror's angular resolution. According to the formula for vertical axis magnification of an optical system, testing long-focal-length optical components typically utilizes long-focal-length parallel light to ensure the light source's angular resolution. The output of a large-aperture parallel light source requires a parabolic mirror with a sufficiently large effective aperture, and long-focal-length, large-aperture parabolic mirrors are typically used to ensure this performance.

[0003] In typical optical systems, the focal length of the optical element being tested (X-ray focusing mirror) must be 3-5 times smaller than the focal length of the optical system's light source to ensure valid measurement data. For testing the optical performance of a Wolter-I X-ray focusing mirror with a focal length of 5250mm and an angular resolution of 30″ or less, long-focal-length collimated light is typically used for testing. Depending on the vertical magnification of the optical system, the focal length of the long-focal-length collimated light used to test a focusing mirror with a focal length of 5250mm and a performance index of 30″ must be at least 15-20m to meet the required accuracy.

[0004] Due to the thin-walled structure of the nickel-gold-plated Wolter I X-ray focusing lens, it cannot maintain its own surface shape during horizontal testing. A microgravity suspension system is required to ensure that it does not deform (or damage) itself. Because this focusing lens assembly equipment needs to adopt a vertical solution, and the light source is at the bottom of the entire system, if the parallel light source used also adopts a vertical solution, then the entire adjustment system needs to be higher than 25 meters in height. Such sites are not common, and it would cost a lot of money to build a dedicated site, which increases the cost of testing and assembling the focusing lens performance.

[0005] There is an urgent need for a parallel light source that can not only ensure the test accuracy requirements, but also adapt to the site and reduce the space to within 1m to achieve parallel light output. Summary of the Invention

[0006] The present invention provides a short-focus visible light parallel light generating device for testing and assembling large-aperture X-ray focusing mirrors, which is used to solve the defect in the prior art of using long-focus parallel light to perform performance testing and assembly of large-aperture X-ray focusing mirrors, which requires a large space. The device can complete the testing and assembly of large-aperture X-ray focusing mirrors that meet the test accuracy requirements in a smaller space.

[0007] The present invention provides a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror. The device comprises a pigtail laser and a large-aperture short-focus parabolic mirror. The light outlet at the tail end of the optical fiber of the pigtail laser is located at the focus of the large-aperture short-focus parabolic mirror. The output light of the pigtail laser is transmitted through the optical fiber and forms a point light source at the light outlet at the tail end of the optical fiber. The output light of the point light source is reflected by the large-aperture short-focus parabolic mirror to form a parallel light beam output.

[0008] According to a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror provided by the present invention, the aperture of the light outlet at the tail end of the fiber pigtail laser satisfies: , where Indicates the radius of the light outlet at the tail end of the fiber-pigtailed laser. Indicates the light source angular resolution index, Indicates the focal length of a large-aperture, short-focal-length parabolic mirror.

[0009] According to a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror provided by the present invention, the optical fiber tail end light outlet of the fiber pigtail laser is provided with an adjustment aperture, which is suitable for adjusting the aperture of the optical fiber tail end light outlet of the fiber pigtail laser through the adjustment aperture.

[0010] According to the present invention, a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror is provided. The large-aperture short-focus parabolic mirror is installed on a support platform, and a support frame is also provided on the support platform. The fiber pigtail laser is installed on the support frame.

[0011] According to a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror provided by the present invention, a light outlet displacement adjustment member is movably provided on the support frame, the fiber pigtail laser is fixed to the lower end of the light outlet displacement adjustment member, and the light outlet displacement adjustment member is suitable for moving toward or away from the large-aperture short-focus parabolic mirror to adjust the height of the light outlet at the tail end of the optical fiber of the fiber pigtail laser.

[0012] According to a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror provided by the present invention, a light outlet displacement adjustment frame is provided on the top of the support frame, a vertical movable track is formed on the light outlet displacement adjustment frame, and the light outlet displacement adjustment member is movably arranged on the movable track.

[0013] According to the present invention, a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror is provided. The support frame includes multiple support rods, and the multiple support rods are evenly distributed along the circumference of the large-aperture short-focus parabolic mirror. The bottom of the support rod is connected to the edge of the support platform, and the tops of the multiple support rods are connected together for installing the pigtail laser.

[0014] According to the short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror provided by the present invention, the pigtail laser is a laser coupled with a multi-mode optical fiber or a single-mode optical fiber.

[0015] According to the present invention, a short-focus visible light parallel light generating device for large-aperture X-ray focusing mirror test assembly is provided. The fiber core of the pigtail laser is 10 μm to 15 μm, and the beam quality parameters of the pigtail laser meet .

[0016] According to the present invention, a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror is provided, wherein the aperture of the large-aperture short-focus parabolic mirror is not less than 500 mm, and the focal length of the large-aperture short-focus parabolic mirror is not greater than 1000 mm.

[0017] The short-focus visible light parallel light generator provided by the present invention for testing and assembling large-aperture X-ray focusing mirrors uses a small-aperture pigtail laser in conjunction with a large-aperture short-focal-length parabolic mirror to form a short-focus visible light parallel light generator. The light outlet at the tail end of the fiber optic pigtail laser is located at the focus of the large-aperture short-focal-length parabolic mirror. By designing the diameter and position of the light outlet at the tail end of the fiber optic, the resolution accuracy of the light source is improved, forming a short-focal-length parallel light source. When testing and assembling large-aperture X-ray focusing mirrors, using this short-focus visible light parallel light generator of the present invention can significantly reduce the spatial height of the assembly system, ensuring both test accuracy requirements and adaptability to the site. Assembly and adjustment can be completed using a conventional site, saving the cost of focusing mirror performance testing and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0019] Figure 1 The diagram is a schematic structural diagram of a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror provided by the present invention.

[0020] Figure 2 The diagram is a top view of a short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror provided by the present invention.

[0021] Figure 3 The figure is a comparative diagram of the light source angular resolution corresponding to different apertures of the light outlet at the tail end of the fiber pigtail laser provided by the present invention.

[0022] Figure numerals: 1. pigtail laser; 2. large-aperture short-focal-length parabolic mirror; 3. support platform; 4. support frame; 5. light outlet displacement adjustment member; 6. light outlet displacement adjustment frame. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0026] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0027] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0028] The following combination Figures 1 to 3 The specific structure and working process of the short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror of the present invention are described.

[0029] One embodiment of the present invention provides a short-focus visible light parallel light generating device for large-aperture X-ray focusing mirror test assembly, combined with Figure 1 and Figure 2 As shown, the short-focus parallel light source includes a pigtail laser 1 and a large-aperture short-focal-length parabolic mirror 2. The light outlet at the tail end of the optical fiber of the pigtail laser 1 is located at the focus of the large-aperture short-focal-length parabolic mirror 2. The output light of the pigtail laser 1 is transmitted through the optical fiber and forms a point light source at the light outlet at the tail end of the optical fiber. The output light of the point light source is reflected by the large-aperture short-focal-length parabolic mirror 2 to form a parallel light beam output.

[0030] It is understood that the short-focus visible light parallel light generator for testing and assembling large-aperture X-ray focusing mirrors of this embodiment uses a small-aperture pigtail laser 1 in conjunction with a large-aperture short-focal-length parabolic mirror 2 to form a short-focus parallel light source. The light outlet at the tail end of the fiber optic cable of the pigtail laser 1 is located at the focus of the large-aperture short-focal-length parabolic mirror 2. By designing the diameter and position of the light outlet at the tail end of the fiber optic cable, the resolution accuracy of the light source is improved, forming a short-focal-length parallel light source. When testing and assembling large-aperture X-ray focusing mirrors, using this short-focus parallel light source of this embodiment can significantly reduce the spatial height of the assembly and adjustment system, ensuring both test accuracy requirements and adaptability to the site. Assembly and adjustment can be completed using a conventional site, saving the cost of focusing mirror performance testing and assembly.

[0031] In some embodiments of the short-focus visible light parallel light generating device for large-aperture X-ray focusing mirror test assembly of the present invention, the aperture of the light outlet at the tail end of the fiber pigtail laser 1 satisfies: , where Indicates the radius of the light outlet at the tail end of the fiber-pigtailed laser. Indicates the light source angular resolution index, Indicates the focal length of a large-aperture, short-focal-length parabolic mirror.

[0032] This embodiment optimizes the angular resolution of the light source by designing the aperture of the light outlet at the tail end of the fiber-optic tail laser 1, thereby improving the resolution accuracy of the light source and achieving higher angular resolution under space limitations. Taking the example of reducing the space to less than 1m to achieve parallel light output, the maximum space for building a parallel light source can only accommodate a parabolic mirror with a focal length of 1000mm for outputting parallel light. According to the formula for the vertical axis magnification of the optical system, the short focal length parallel light of 1000m is converged by a focusing mirror with a focal length of 5250mm. The angular resolution of the light source is large, and its accuracy is difficult to meet the 30" index (light source angular resolution index) test requirements of the Wolter-I type X-ray focusing mirror. This embodiment is based on the 30" index of the Wolter-I type X-ray focusing mirror, and in accordance with the index requirements, the light source accuracy required for the 30" focusing mirror detection is deduced, and then the formula is used to calculate the light source accuracy required for the 30" focusing mirror detection. The aperture of the light outlet at the focus of the parallel light source (the aperture of the light outlet at the tail end of the fiber-pigtailed laser 1) is calculated. This method is used to improve the resolution accuracy of the light source and obtain a parallel light source with higher angular resolution under spatial constraints.

[0033] In some specific examples, the optical fiber tail end light outlet of the pigtail laser 1 is provided with an adjustable aperture, which is suitable for adjusting the diameter of the optical fiber tail end light outlet of the pigtail laser 1 by adjusting the aperture. It can be understood that in this example, the diameter of the optical fiber tail end light outlet of the pigtail laser 1 can be dynamically adjusted by adjusting the aperture, which enables the system to flexibly adjust the characteristics of the light source under different test conditions. Figure 3 As shown, Figure 3 in and Indicates the beam divergence angle, which is used to indicate the angular resolution index of the light source. and Indicates the radius of the light outlet at the tail end of the fiber-pigtailed laser. and Indicates the focal length of a large-aperture, short-focal-length parabolic mirror. A smaller light-exit aperture can reduce the divergence angle of the light beam, thereby improving the angular resolution of the light source. A larger light-exit aperture can increase the intensity of the light beam, making it suitable for applications requiring higher light intensity. Figure 3 It can be seen that the beam divergence angle shown in the figure on the right is Smaller than the beam divergence shown in the figure on the left , that is, the angular resolution capability of the light source shown in the right figure is higher than that of the light source shown in the left figure, and the radius of the light outlet at the fiber end of the corresponding right pigtail laser is Smaller than the radius of the optical fiber tail end light outlet of the left pigtail laser In this example, the aperture of the light outlet at the tail end of the fiber pigtail laser 1 is adjusted by adjusting the aperture, thereby adjusting the angular resolution capability of the light source.

[0034] Specifically, the output light of the pigtail laser 1 is transmitted through the optical fiber and forms a point light source at the light outlet at the end of the optical fiber. The adjustment aperture is installed at the light outlet at the end of the optical fiber of the pigtail laser 1 and can be adjusted manually or automatically. The manual adjustment method can change the diameter of the light outlet at the end of the optical fiber by manually rotating or moving the adjustment aperture. This method is simple and direct and suitable for fine adjustment in a laboratory environment. The automatic adjustment method can use a motor-driven adjustment aperture, and can achieve precise automatic adjustment through a control system. This method is suitable for integration into an automated test system to improve operational efficiency and accuracy.

[0035] The following is a specific example to illustrate how to use the aperture adjustment to optimize the angular resolution of the light source: Assuming that the focal length of a large-aperture short-focal-length parabolic mirror is , light source angular resolution index (30 arc seconds), converted to radians is approximately Radians. According to the formula , calculate the radius of the light outlet at the tail end of the fiber pigtail laser , then the diameter of the light outlet at the tail end of the fiber pigtail laser is . If higher angular resolution is required, the diameter of the light outlet can be further reduced to, for example, 0.13 mm by adjusting the aperture to reduce the divergence angle and improve the angular resolution performance. If higher light intensity is required but the angular resolution requirement is not particularly high, the diameter of the light outlet can be increased to, for example, 0.16 mm by adjusting the aperture to increase the beam intensity. This example uses the design of the adjustable aperture to allow the system to flexibly adjust the light source characteristics in different test environments to adapt to more diverse test needs. By precisely adjusting the diameter of the light outlet, the angular resolution capability of the system can be significantly improved to meet the requirements of high-precision testing. It is not only suitable for laboratory environments, but can also be integrated into automated test systems to improve overall test efficiency and accuracy.

[0036] In some embodiments of the short-focus visible light parallel light generating device for large-aperture X-ray focusing mirror test assembly of the present invention, see Figure 1 As shown, the large-aperture short-focal-length parabolic mirror 2 is mounted on a support platform 3, a support frame 4 is also provided on the support platform 3, and the pigtail laser 1 is mounted on the support frame 4. Figure 2 As shown, the support frame 4 includes multiple support rods, which are evenly distributed along the circumference of the large-aperture short-focal-length parabolic mirror 2. The bottom of the support rods is connected to the edge of the support platform 3, and the tops of the multiple support rods are connected together for installing the pigtail laser 1.

[0037] It will be appreciated that in this embodiment, the light output by the pigtailed laser 1 is transmitted through an optical fiber, forming a point light source at the light outlet at the end of the fiber. The large-aperture, short-focal-length parabolic mirror 2 is used to reflect the light output from the point light source to form a parallel beam. The support platform 3 provides basic support and secures other components. The support frame 4, consisting of multiple support rods, is used to mount the pigtailed laser 1.

[0038] Specifically, the large-aperture, short-focal-length parabolic mirror 2 is mounted in the center of the support platform 3, ensuring that the focal point of the large-aperture, short-focal-length parabolic mirror 2 is located on the central axis of the support platform 3. The support platform 3 provides a stable foundation for the entire system and supports the large-aperture, short-focal-length parabolic mirror 2 and the support frame 4. It is typically made of metal to ensure the stability and durability of the system. The edge of the support platform 3 is designed to connect to the bottom of the support frame 4. The support frame 4 can be composed of four support rods, which are evenly distributed along the circumference of the large-aperture short-focal-length parabolic mirror 2. Each support rod is 90 degrees apart. This design ensures the stability of the support frame and can effectively and accurately position the fiber optic laser 1 at the focus of the large-aperture short-focal-length parabolic mirror 2. The bottom of each support rod is connected to the edge of the support platform 3. This layout not only enhances the stability of the overall structure, but also facilitates adjustment and maintenance. The tops of multiple support rods are gathered and connected together to form a centralized and stable triangular or circular mounting platform for installing the fiber optic laser 1. The fiber optic laser 1 is installed on the platform gathered at the top of the support frame 4 to ensure that its fiber optic tail end light outlet is located at the focus of the large-aperture short-focal-length parabolic mirror 2. In order to further optimize the performance of the light source, the fiber optic tail end light outlet of the fiber optic laser 1 is provided with an adjustable aperture, and the aperture can be flexibly adjusted to adjust the aperture of the fiber optic tail end light outlet.

[0039] Furthermore, in some specific examples, a light outlet displacement adjustment member 5 is movably provided on the support frame 4, and the pigtailed fiber laser 1 is fixed to the lower end of the light outlet displacement adjustment member 5. The light outlet displacement adjustment member 5 is adapted to move toward or away from the large-aperture, short-focal-length parabolic mirror 2 to adjust the height of the light outlet of the optical fiber tail end of the pigtailed fiber laser 1. Specifically, a light outlet displacement adjustment frame 6 is provided on the top of the support frame 4, and a vertical movable track is formed on the light outlet displacement adjustment frame 6, and the light outlet displacement adjustment member 5 is movably provided on the movable track.

[0040] In this example, the height of the optical outlet port of the fiber tail end of the pigtail laser 1 can be precisely adjusted by adjusting the optical outlet displacement adjustment member 5, thereby optimizing the output effect of the light source. The top of the support frame 4 is connected by the tops of multiple support rods to form a stable mounting platform. The optical outlet displacement adjustment frame 6 is mounted on this platform. The optical outlet displacement adjustment frame 6 is formed with a vertical movable track. The optical outlet displacement adjustment member 5 is movably arranged within the movable track and can be moved up and down mechanically or electrically (the position of the optical outlet displacement adjustment member 5 within the track can be controlled by a manual knob, a gear rack mechanism, or a motor drive, thereby achieving precise adjustment of the height of the pigtail laser 1). The optical outlet displacement adjustment member 5 is used to adjust the position of the pigtail laser 1, particularly the height of the optical outlet port at the fiber tail end. The optical outlet displacement adjustment member 5 can move toward or away from the large-aperture, short-focal-length parabolic mirror 2 to precisely adjust the position of the pigtail laser 1 relative to the parabolic mirror's focus.

[0041] In some examples, the pigtailed fiber laser 1 is first secured to the lower end of the optical port displacement adjustment member 5 and mounted on the movable track of the optical port displacement adjustment frame 6 at the top of the support frame 4. The optical port displacement adjustment member 5 is then manually or electrically moved along the vertical track to the approximately correct height. A precision measuring tool (such as a laser rangefinder or optical alignment equipment) is then used to further fine-tune the position of the optical port displacement adjustment member 5 to ensure that the optical port of the pigtailed fiber laser 1 is precisely positioned at the focal point of the parabolic mirror 2. After adjustment, the adjustment effect can be verified by testing the parallelism and angular resolution of the light source. If further optimization is required, the position of the optical port displacement adjustment member 5 can be fine-tuned again until the optimal effect is achieved. In this example, the combination of the optical port displacement adjustment member 5 and the optical port displacement adjustment frame 6 enables highly precise height adjustment, ensuring optimal performance of the light source. This design enables the system to flexibly adjust the position of the light source to meet different testing requirements, adapting to a wider range of application scenarios. It is not only suitable for fine-tuning in laboratory environments, but can also be integrated into automated testing systems to improve operational efficiency and accuracy.

[0042] Based on the structures of the short-focus visible light parallel light generating device for large-aperture X-ray focusing mirror test assembly in the above-mentioned embodiments or examples, in this embodiment, the pigtail laser 1 is a laser coupled with a multimode optical fiber or a single-mode optical fiber. The optical fiber core of the pigtail laser 1 is 10μm~15μm, and the beam quality parameters of the pigtail laser 1 meet The diameter of the large-aperture short-focal-length parabolic mirror 2 is not less than 500 mm, and the focal length of the large-aperture short-focal-length parabolic mirror 2 is not greater than 1000 mm.

[0043] It can be understood that this embodiment further clarifies the specific parameters of the pigtail laser 1 and the key characteristics of the large-aperture short-focal-length parabolic mirror 2. The pigtail laser 1 can be coupled with a multimode optical fiber or a single-mode optical fiber. The multimode optical fiber allows multiple modes of light to propagate simultaneously, and is suitable for application scenarios that require higher optical power; the single-mode optical fiber only allows one mode of light to propagate, has better beam quality and a smaller divergence angle, and is suitable for high-precision optical systems. The optical fiber core diameter of the pigtail laser 1 is 10μm to 15μm (generally, a laser with a small-aperture single-mode optical fiber pigtail with a core of 14μm can be selected as a point light source). The core diameter within this range can minimize the divergence angle of the light beam while ensuring sufficient optical power, thereby improving the angular resolution capability of the light source. The beam quality parameters of the pigtail laser 1 meet , It is an important parameter to measure the quality of laser beam, which indicates the degree of divergence of the actual laser beam relative to the ideal Gaussian beam. The closer it is to 1, the higher the quality of the laser beam and the smaller the divergence angle. It means that the laser beam is very close to an ideal Gaussian beam, with high beam quality and small divergence angle, which is very important for achieving a parallel light source with high angular resolution.

[0044] The large-aperture short-focal-length parabolic mirror 2 has an aperture of no less than 500mm. This large aperture ensures effective coverage of the output parallel beam, making it suitable for testing and assembly of large-aperture X-ray focusing mirrors. The focal length of the large-aperture short-focal-length parabolic mirror 2 is no greater than 1000mm. This short focal length design enables the production of a high-angular-resolution parallel light source within a limited space. Combined with the appropriate point light source exit port size, it can provide a high-quality parallel beam within a compact space.

[0045] The pigtail laser 1 of this embodiment uses a laser coupled with a multimode fiber or a single-mode fiber, and uses a laser coupled with a multimode fiber or a single-mode fiber lamp with a core of 14 μm (requires ) as a point light source, paired with a parabolic mirror with an aperture greater than 500mm and a focal length of 1000mm, the system's required large-aperture, short-focus collimated light source is achieved. This not only ensures high light source quality and parallelism, but also, through precise adjustment of the light outlet position, achieves the high-precision collimated light source required for testing and assembling large-aperture X-ray focusing mirrors, offering high practical value and flexibility.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror, characterized in that: The invention comprises a pigtail laser (1) and a large-aperture short-focal-length parabolic mirror (2), wherein the optical fiber tail end light outlet of the pigtail laser (1) is located at the focus of the large-aperture short-focal-length parabolic mirror (2), the output light of the pigtail laser (1) is transmitted through the optical fiber and forms a point light source at the optical fiber tail end light outlet, and the output light of the point light source is reflected by the large-aperture short-focal-length parabolic mirror (2) to form a parallel light beam output.

2. The short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to claim 1, characterized in that: The diameter of the light outlet at the tail end of the fiber pigtail laser (1) satisfies: , where Indicates the radius of the light outlet at the tail end of the fiber-pigtailed laser. Indicates the angular resolution index of the light source, Indicates the focal length of a large-aperture, short-focal-length parabolic mirror.

3. The short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to claim 2, characterized in that: The optical fiber tail end light outlet of the pigtail laser (1) is provided with an adjustment aperture, which is suitable for adjusting the aperture of the optical fiber tail end light outlet of the pigtail laser (1) through the adjustment aperture.

4. The short-focus visible light parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to claim 1, characterized in that: The large-aperture short-focal-length parabolic mirror (2) is mounted on a support platform (3); a support frame (4) is further provided on the support platform (3); and the pigtail laser (1) is mounted on the support frame (4).

5. The short-focus visible parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to claim 4, characterized in that: A light outlet displacement adjusting member (5) is movably provided on the support frame (4), the pigtail laser (1) is fixed to the lower end of the light outlet displacement adjusting member (5), and the light outlet displacement adjusting member (5) is suitable for moving toward or away from the large-aperture short-focal-length parabolic mirror (2) to adjust the height of the light outlet at the tail end of the optical fiber of the pigtail laser (1).

6. The short-focus visible parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to claim 5, characterized in that: A light outlet displacement adjustment frame (6) is provided on the top of the support frame (4), a vertical movable track is formed on the light outlet displacement adjustment frame (6), and the light outlet displacement adjustment member (5) is movably arranged on the movable track.

7. The short-focus visible parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to claim 4, characterized in that: The support frame (4) includes a plurality of support rods, the plurality of support rods being evenly distributed along the circumference of the large-aperture short-focal-length parabolic mirror (2), the bottoms of the support rods being connected to the edge of the support platform (3), and the tops of the plurality of support rods being connected together for mounting the pigtail laser (1).

8. The short-focus visible parallel light generator for testing and assembling a large-aperture X-ray focusing mirror according to any one of claims 1 to 7, characterized in that: The pigtail laser (1) is a laser coupled with a multimode optical fiber or a single-mode optical fiber.

9. The short-focus visible parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to claim 8, characterized in that: The fiber core of the pigtail laser (1) is 10 μm to 15 μm, and the beam quality parameters of the pigtail laser (1) meet .

10. The short-focus visible parallel light generating device for testing and assembling a large-aperture X-ray focusing mirror according to any one of claims 1 to 7, characterized in that: The diameter of the large-aperture short-focal-length parabolic mirror (2) is not less than 500 mm, and the focal length of the large-aperture short-focal-length parabolic mirror (2) is not greater than 1000 mm.

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