Adjustable light shield device of Grignard optical system

Abstract

The invention discloses an adjustable light shield device of a Gridger type optical system, which comprises a force bearing cylinder, an inner light shield is assembled in the force bearing cylinder, and a secondary mirror flexible joint is assembled in the inner light shield; a secondary mirror is assembled on the secondary mirror flexible joint, and a force bearing ring is assembled at the top end of the force bearing cylinder and located outside the inner light shield; the inner light shield comprises a central carrying rod, a light shield plate a, a light shield plate b and a light shield plate c; the light shield plate a, the light shield plate b and the light shield plate c are combined and sleeved outside the central carrying rod; a connecting column is installed at the end of the center carrying rod, a connector is installed at the end of the connecting column, the connector is installed in the bearing cylinder, and a bearing hoop is connected between the center carrying rod and the connecting column in a clamped mode; the structure is simple, so that the performance of the optical system is optimized. And the whole body is cylindrical, so that the stability and the reliability of the system are improved. Further innovation and development of an optical system technology are promoted, and a high-performance and high-stability optical solution is provided for application in more fields.

Description

Technical Field

[0001] The invention relates to the technical field of adhesive tape paper tubes, in particular to an adjustable light shield device for a Gregorian optical system. Background Art

[0002] In the optical system of space cameras, the sunshade is a common optical accessory used to reduce or eliminate the interference of stray light, prevent glare and improve image quality. Traditional sunshades usually adopt a fixed structure and are difficult to adapt to different lighting conditions or field of view requirements. Especially in the Gregorian optical system, the complex optical path and changing application environment of the system put forward higher requirements on the adjustability and adaptability of the sunshade.

[0003] Gregorian optical system is a specially designed optical system widely used in astronomical observation, microscopy and precision measurement. Due to its complex optical path and high imaging quality requirements, traditional sunshades often cannot meet the needs of dynamic adjustment. In this case, the adjustment function of the sunshade is particularly important so that it can adapt to different observation environments, avoid light interference and optimize imaging effects.

[0004] In the prior art, although some sunshades have certain adjustment functions, they are usually complex in mechanical structure, insufficient in adjustment precision or inconvenient in operation, and cannot achieve precise adjustment of the optical system. Therefore, developing an adjustable sunshade device suitable for Gregorian optical system can not only improve the flexibility and adaptability of the system, but also improve the imaging quality and ease of operation, which is a technical problem to be solved in the current optical field; Traditional Gregorian optics hoods are usually fixed and difficult to adjust dynamically. This limits their adaptability to different lighting conditions and application requirements. Although some high-end hoods have adjustment functions, their mechanical structure is complex and inconvenient to operate, which may cause difficulties in maintenance and adjustment. Some hoods on the market may not be fully compatible with specific models of Gregorian optics, resulting in inconvenient installation or poor results. Summary of the invention

[0005] The object of the present invention is to provide an adjustable sunshade device for a Gregorian optical system to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an adjustable sunshade device of a Gregorian optical system, comprising a bearing cylinder, an inner sunshade is installed inside the bearing cylinder, and a secondary mirror flexible section is installed inside the inner sunshade; The secondary mirror flexible joint is equipped with a secondary mirror, and the top end of the bearing cylinder is located outside the inner light shield and is equipped with a bearing ring; The inner sunshade comprises a central carrier rod, a sunshade plate a, a sunshade plate b and a sunshade plate c, wherein the sunshade plate a, the sunshade plate b and the sunshade plate c are combined and knotted on the outside of the central carrier rod; A connecting column is installed at the end of the central load-bearing rod, a connecting head is installed at the end of the connecting column, the connecting head is installed inside the load-bearing cylinder, and a load-bearing clamp is clamped between the central load-bearing rod and the connecting column; Fastening plates are installed at both ends of the opening of the load-bearing clamp, and the side walls of the two fastening plates are provided with U-shaped grooves. Bolts are installed inside the U-shaped grooves, and a clamping structure is assembled between the load-bearing clamp and the central load rod.

[0007] Preferably, a gasket a is installed between the bearing cylinder and the bearing ring, and a gasket b is installed between the secondary mirror flexible joint and the bearing ring.

[0008] Preferably, a nut is screwed onto the outer wall of the fastening plate outside the bolt, a circular groove is provided on the internal thread of the nut, a circular piece is placed in the circular groove, a threaded hole is provided on the circular piece, and the bolt is sleeved in the threaded hole.

[0009] Preferably, a clamping slot is provided on the circular groove, a clamping block is installed on the circular member, and the clamping block is clamped in the clamping slot.

[0010] Preferably, the clamping structure includes a limit block and a limit groove, the inner wall of the load-bearing clamp is provided with four limit grooves, the outer wall of the central load rod is installed with four limit blocks, the position of each limit block and each limit groove corresponds one to one, and the limit blocks are installed in the limit grooves.

[0011] Preferably, the inner walls of the sunshade plates a, b and c are all installed with support plates, and the ends of the support plates are all connected to the central carrier rod.

[0012] Preferably, a support plate is installed at the end edge of the support plate, and a convex shape is formed from low to high from one end of the support plate to the other end of the support plate, and one end of the support plate exceeds one end of the end edge of the support plate.

[0013] Preferably, the starting end of the support plate is chamfered, and the support plate is inclined. The side wall of the support plate is provided with heat dissipation holes.

[0014] Compared with the prior art, this solution designs a Gregorian optical system adjustable sunshade device, which has the following beneficial effects: the structure is simple, allowing the user to adjust the position of the sunshade according to actual needs and environmental conditions, thereby optimizing the performance of the optical system. Its block-type and overall cylindrical shape improve the stability and reliability of the system. It promotes further innovation and development of optical system technology and provides high-performance and high-stability optical solutions for applications in more fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the inner light shield of the present invention; Figure 4 Schematic diagram of the central carrier rod, carrier clamp and connecting column of the present invention Figure 5 It is a schematic diagram of a bolt of the present invention; Figure 6 It is a schematic diagram of a support plate of the present invention.

[0016] In the figure: 1 inner sunshade, 2 load-bearing ring, 3 gasket a, 4 load-bearing cylinder, 5 gasket b, 6 secondary mirror flexible joint, 7 secondary mirror, 8 sunshade plate a, 9 sunshade plate b, 10 sunshade plate c, 11 support plate, 12 center carrier rod, 13 load-bearing clamp, 14 connecting column, 15 connecting head, 16 limit block, 17 limit groove, 18 fastening plate, 19 U-shaped groove, 20 bolt, 21 nut, 22 round groove, 23 round part, 24 threaded hole, 25 card slot, 26 card block, 27 heat dissipation hole, 28 one end of the support plate, 29 support plate, 30 the other end of the support plate, 31 chamfer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 6, which is a technical solution provided by the present invention: a Gregorian optical system adjustable sunshade device, comprising a bearing cylinder 4, an inner sunshade 1 is installed inside the bearing cylinder 4, and a secondary mirror flexible section 6 is installed inside the inner sunshade 1; a secondary mirror 7 is installed on the secondary mirror flexible section 6, and the top of the bearing cylinder 4 is located outside the inner sunshade 1 and is equipped with a bearing ring 2; the inner sunshade 1 includes a central carrying rod 12, a sunshade plate a8, a sunshade plate b9 and a sunshade plate c10, and the sunshade plates a8 and b9 are arranged on the inner sunshade plate c10. b9 and the sunshade plate c10 are combined and knotted on the outside of the central support rod 12; according to the coaxial RC+compensation mirror structure adopted by the Gregorian optical system, the connection relationship between the secondary mirror sunshade and the main supporting thin-walled tube connector is given here. The secondary mirror 7 is installed on the secondary mirror flexible section 6, and the secondary mirror flexible section 6 is installed on the bearing ring 2, with a gasket 5 added in the middle. The inner sunshade 1 is also installed on the bearing ring 2, located outside the secondary mirror 7 to wrap it, and the bearing ring 2 is installed on the bearing tube 4, with a gasket 3 added in the middle. The inner sunshade 1 is divided into three parts 8, 9, and 10, each of which has two mounting holes and is fixedly connected to the waist hole on the bearing ring with screws. A connecting column 14 is installed at the end of the central support rod 12, and a connecting head 15 is installed at the end of the connecting column 14. The connecting head 15 is installed inside the bearing tube 4, and a bearing clamp 13 is clamped between the central support rod 12 and the connecting column 14; Fastening plates 18 are installed at both ends of the opening of the load-bearing clamp 13, and the side walls of the two fastening plates 18 are provided with U-shaped grooves 19. Bolts 20 are installed inside the U-shaped grooves 19. A clamping structure is assembled between the load-bearing clamp 13 and the central load rod 14. The two fastening plates 18 are fastened by the load-bearing clamp 13, and the two fastening plates 18 are fastened by the bolts 20.

[0019] A gasket a3 is installed between the bearing cylinder 4 and the bearing ring 2, and a gasket b5 is installed between the secondary mirror flexible section 6 and the bearing ring 2.

[0020] The outer wall of the bolt 20 is screwed with a nut 21, and the inner thread of the nut 21 is provided with a circular groove 22, and a circular piece 23 is placed in the circular groove 22. The circular piece 23 is provided with a threaded hole 24, and the bolt 20 is sleeved in the threaded hole 24; a clamping groove 25 is provided on the circular groove 22, and a clamping block 26 is installed on the circular piece 23, and the clamping block 26 is clamped in the clamping groove 25; after the bolt 20 is installed in the U-shaped groove 19, the nut 21 is screwed on the bolt 20, the circular piece 23 is placed in the circular groove 22, and the clamping block 26 is clamped in the clamping groove 25, so that the bolt 20 passes through the U-shaped groove 10 on the load-bearing clamp 13, and the nut 21 is screwed on the bolt 20, and the bolt 20 is screwed into the threaded hole 24 on the circular piece 23, so that the nut 21 and the bolt 20 are doubly imprisoned.

[0021] The clamping structure includes a limit block 16 and a limit groove 17. Four limit grooves 17 are provided on the inner wall of the load-bearing clamp 13, and four limit blocks 16 are installed on the outer wall of the central load rod 12. The position of each limit block 16 corresponds to that of each limit groove 17, and the limit block 16 is installed in the limit groove 17. When the load-bearing clamp 13 and the central load rod 12 are installed, the limit block 16 can be installed in the limit groove 17 for limiting.

[0022] The inner walls of the sunshade plates a8 , b9 and c10 are all installed with support plates 11 , and the ends of the support plates 11 are all connected to the central carrying rod 12 .

[0023] A support plate 29 is installed at the end edge of the support plate 11 , and a convex shape is formed from one end 28 of the support plate 29 to the other end 30 of the support plate 29 from low to high, and one end 28 of the support plate 29 exceeds one end of the end edge of the support plate 11 .

[0024] The starting end of the support plate 11 is provided with a chamfer 31 , and the support plate 11 is inclined. The side wall of the support plate 11 is provided with a heat dissipation hole 27 .

[0025] Working principle: 1. It is installed in blocks on the connecting frame between the load-bearing ring and the internal secondary mirror. It is easy to install and has strong versatility, and the number of blocks can be adjusted according to the number of connecting frames; 2. The light-shield material is made of carbon fiber, which is lightweight and the base frequency of the overall modal simulation result is above 100Hz, ensuring that the overall stiffness meets the vibration requirements and is not easily damaged; the block-type light-shield can be adjusted to a non-circular distribution. When there is a difference between the theoretical results and the actual results, it can be adjusted according to the actual light angle to better suppress stray light, which is flexible and diverse.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A Gregorian optical system adjustable sunshade device, comprising a bearing cylinder (4), characterized in that: The inner part of the load-bearing cylinder (4) is equipped with an inner light shield (1), and the inner part of the inner light shield (1) is equipped with a secondary mirror flexible joint (6); The secondary mirror flexible joint (6) is equipped with a secondary mirror (7), and the top end of the load-bearing cylinder (4) is located outside the inner light shield (1) and is equipped with a load-bearing ring (2); The inner sunshade (1) comprises a central carrier rod (12), a sunshade plate a (8), a sunshade plate b (9) and a sunshade plate c (10), wherein the sunshade plate a (8), the sunshade plate b (9) and the sunshade plate c (10) are combined and knotted on the outside of the central carrier rod (12); A connecting column (14) is installed at the end of the central load-bearing rod (12), a connecting head (15) is installed at the end of the connecting column (14), the connecting head (15) is installed inside the load-bearing cylinder (4), and a load-bearing clamp (13) is clamped between the central load-bearing rod (12) and the connecting column (14); Fastening plates (18) are installed at both ends of the opening of the load-bearing clamp (13), and the side walls of the two fastening plates (18) are provided with U-shaped grooves (19). Bolts (20) are installed inside the U-shaped grooves (19), and a clamping structure is assembled between the load-bearing clamp (13) and the central load-bearing rod (14).

2. The adjustable sunshade device of a Gregorian optical system according to claim 1, characterized in that: A gasket a (3) is installed between the bearing cylinder (4) and the bearing ring (2), and a gasket b (5) is installed between the secondary mirror flexible joint (6) and the bearing ring (2).

3. The adjustable sunshade device of a Gregorian optical system according to claim 1, characterized in that: The outside of the bolt (20) is threadedly connected to a nut (21) on the outer wall of the fastening plate (18); a circular groove (22) is formed on the internal thread of the nut (21); a circular piece (23) is placed in the circular groove (22); a threaded hole (24) is formed on the circular piece (23); and the bolt (20) is sleeved in the threaded hole (24).

4. The adjustable sunshade device of a Gregorian optical system according to claim 2, characterized in that: The circular groove (22) is provided with a clamping groove (25), and a clamping block (26) is mounted on the circular member (23), and the clamping block (26) is clamped in the clamping groove (25).

5. The adjustable sunshade device of a Gregorian optical system according to claim 1, characterized in that: The clamping structure comprises a limit block (16) and a limit groove (17); the inner wall of the load-bearing clamp (13) is provided with four limit grooves (17); the outer wall of the central load-bearing rod (12) is provided with four limit blocks (16); the position of each limit block (16) and each limit groove (17) corresponds one to one, and the limit block (16) is installed in the limit groove (17).

6. The adjustable sunshade device of a Gregorian optical system according to claim 1, characterized in that: The inner walls of the sunshade plate a (8), the sunshade plate b (9) and the sunshade plate c (10) are all installed with support plates (11), and the ends of the support plates (11) are all connected to the central carrying rod (12).

7. The adjustable sunshade device of a Gregorian optical system according to claim 6, characterized in that: A support plate (29) is installed at the end edge of the support plate (11), and a convex shape is formed from one end (28) of the support plate (29) to the other end (30) of the support plate (29) from low to high, and one end (28) of the support plate (29) exceeds one end of the end edge of the support plate (11).

8. The adjustable sunshade device of a Gregorian optical system according to claim 7, characterized in that: The starting end of the support plate (11) is provided with a chamfer (31), and the support plate (11) is inclined. The side wall of the support plate (11) is provided with a heat dissipation hole (27).

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