A deformable spatial camera light shield

Abstract

The present application relates to the technical field of space camera, and particularly relates to a deformable space camera light shielding protective cover, which comprises a camera frame, a lens is arranged in the camera frame, a groove is formed in the left edge of the camera frame, a light shielding fan blade is connected to the groove through a hinge spring, and a light shielding cover storage groove is formed in the light shielding fan blade; when the space camera does not work, the light shielding fan blade is closed to form a pyramid-shaped protective shell, which effectively protects the lens and avoids damage of space garbage in space to the lens; the light shielding cover of the present application is stored in the light shielding fan blade, which effectively reduces the weight pressure during satellite launching, has the advantages of being lighter, more efficient and the like; the light shielding fan blade and the light shielding cover are controlled by the rotation and stretching of the collection roller, and have the advantages of simple structure, convenient operation, low failure rate, lighter weight and the like.

Description

Technical Field

[0001] This invention relates to the field of space camera technology, and in particular to a deformable space camera sunshade. Background Technology

[0002] Space cameras are advanced optical systems composed of CCDs and other sensors carried on satellites to acquire information about Earth targets. They are widely used in many fields such as resource surveys, topographic mapping, and military reconnaissance. During space remote sensing imaging, the relative motion between the imaging carrier and the ground target causes image shift in the target image on the imaging medium, making the remote sensing image blurry. Therefore, image shift compensation is an indispensable part of improving imaging quality and camera resolution. By establishing a mathematical model for calculating remote sensing image shift, the influence of image shift caused by various factors can be quantitatively analyzed.

[0003] Meanwhile, when the space camera moves within its orbit, it will be affected by interference from space debris, resulting in collisions that can damage components and scratch the lens. Summary of the Invention

[0004] Therefore, this invention was made in view of the above problems. The purpose of this invention is to solve the problem of interference to the space camera in orbit by utilizing the ability of the light-shielding fan to switch between closed and open states. This invention achieves the above objective through the following technical solution:

[0005] A deformable space camera light shield includes a camera frame with a lens disposed inside. A groove is formed on the left edge of the camera frame. A light-shielding fan is connected to the groove via a hinge spring. A light-shielding cover storage slot is formed inside the light-shielding fan. A foldable light-shielding cover is disposed inside the light-shielding cover storage slot. A convergence roller is disposed in the middle of the foldable light-shielding cover. A gear is meshed with the right side of the lens, and a fixing rack is meshed with the outer side of the gear. The fixing rack is rotatably connected to the right end of the convergence roller. A threaded ring is fitted onto the left side of the convergence roller near the fixing rack. A rotating screw is fixedly connected to the left side of the convergence roller near the threaded ring.

[0006] Preferably, the lens is connected to the camera frame via a lifter.

[0007] Preferably, the foldable sunshade is made of an elastic material.

[0008] Preferably, the gathering roller has a light shield control rope; one end of the light shield control rope is connected to the gathering roller, and the other end is connected to a foldable light shield.

[0009] Preferably, the gear is fixedly connected to the camera frame via a fixing rod.

[0010] Preferably, the threaded ring is matched with the rotating lead screw.

[0011] Beneficial effects of this invention:

[0012] 1. When the space camera of the present invention is not in operation, the light-blocking fan closes to form a pyramid-shaped protective shell, which effectively protects the lens and prevents space debris floating in space from damaging the lens.

[0013] 2. The light shield of the present invention is housed inside the light shielding fan, which effectively reduces the pressure on the weight during satellite launch and has the advantages of being lighter and more efficient;

[0014] 3. The unfolding of the light-shielding fan blades and light-shielding cover of the present invention is controlled by the rotation and stretching of the gathering roller; it has the advantages of simple structure, convenient operation, low failure rate and lighter weight. Attached Figure Description

[0015] Figure 1 This is a schematic side view of the entire invention.

[0016] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0017] Figure 3 This is a schematic diagram of the unfolded light-shielding fan blade of the present invention.

[0018] Figure 4 This is a schematic diagram of the internal structure of the light-shielding fan blade of the present invention.

[0019] Figure 5 This is a schematic diagram of the unfolded light shield of the present invention.

[0020] Figure 6 This is a schematic cross-sectional view of the light shield of the present invention.

[0021] In the diagram, 1. Light-shielding fan; 11. Foldable light-shielding cover; 12. Light-shielding cover storage slot; 13. Gathering roller; 131. Light-shielding cover control rope; 2. Camera frame; 21. Groove; 22. Hinge spring; 3. Lens; 31. Rotating screw; 32. Threaded ring; 33. Fixing rack; 34. Gear; 35. Fixing rod. Detailed Implementation

[0022] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will make it easy for those skilled in the art to implement these embodiments; however, the present invention may also be implemented in various different forms, and therefore the present invention is not limited to the embodiments described below; in addition, for the sake of clearer description of the present invention, components not connected to the present invention will be omitted from the drawings.

[0023] like Figure 1 , Figure 2 As shown, a deformable space camera light shield consists of a light shield fan 1 and a camera frame 2; the diagram shows the space camera before launch into space and in standby mode when the camera is not in operation.

[0024] The light-shielding fan 1 is made of carbon fiber composite material and titanium alloy as the main materials. It is attached to the inner side of the lens 3 with a layer of light-shielding material that can absorb or diffuse stray light, and is used together with the unfolded light shield to absorb and diffuse stray light.

[0025] like Figure 3 As shown, a light-shielding fan 1 has a light-shielding cover storage slot 12 for storing the foldable light-shielding cover 11 when it is not unfolded; this figure shows a schematic diagram of the light-shielding fan 1 when the space camera is working.

[0026] like Figure 5 As shown in the figure, this diagram illustrates the space camera in operation with the foldable light shield 11 fully extended; the space camera completes its transformation and begins operation.

[0027] The foldable light shield 11 is made of flexible composite material and has a certain elasticity. It can unfold to form a light shield panel and is attached to the inside of the lens 3 with a light-blocking material that can absorb or diffuse stray light.

[0028] like Figure 4 As shown, a gathering roller 13 is provided inside the light-shielding fan 1, and a light-shielding control rope 131 is wound on the gathering roller 13; wherein the camera frame 2 is provided with a groove 21 and a hinge spring 22;

[0029] The groove 21 on the camera frame 2 is used to accommodate the control light-shielding fan 1. The end of the light-shielding fan 1 is embedded in the groove 21. The hinge spring 22 is also sleeved on the end of the light-shielding fan 1 to keep the light-shielding fan 1 always in a closed state (closed inward to form a pyramid state).

[0030] The light shield control rope 131 has one end wound around the take-up roller 13 and the other end extended into the interior of the foldable light shield 11. When the light shield control rope 131 is wound around the take-up roller 13, the light shield is contracted to stack up and form a folded shape. When the light shield control rope 131 is released from the take-up roller 13, it is stretched under the elasticity of the light shield itself to form an unfolded light shield.

[0031] The coiling roller 13 is made of a highly resilient composite material, and has a space on it for the control rope 131 of the light shield to be wound around. Its end extends into the groove 21 of the camera frame 2. A hole is provided in the middle of the groove 21, and the coiling roller 13 extends into it from the inside.

[0032] like Figure 6 As shown in the figure, the general structure inside the space camera, as well as the position and control method of the convergence roller 13, is shown; it includes a rotary lead screw 31, a threaded ring 32, a fixed rack 33, a gear 34, a fixed rod 35, and a camera rack;

[0033] The rotating lead screw 31 is fixedly mounted on the take-up roller 13 and has a thread that can cooperate with the threaded ring 32 to complete the rotation of the take-up roller 13.

[0034] The threaded ring 32 is fixedly mounted on the side wall of the lens 3. It has a through hole with a diameter larger than that of the take-up roller 13. The inside of the through hole is threaded and can cooperate with the thread of the rotating screw 31. When the threaded ring 32 passes through the rotating screw 31, the two threads cooperate with each other. As the threaded ring 32 moves forward, it drives the rotating screw 31 to rotate, thereby driving the take-up roller 13 to rotate.

[0035] The fixing rack 33 is located at the very end of the take-up roller 13, and its connection with the take-up roller 13 is a rotatable movable connection, allowing the take-up roller 13 to rotate on the fixing rack 33. The side wall is located on the inner wall of the camera frame 2 and can move on the inner wall of the camera frame 2. The other symmetrical side wall is configured to mesh with the gear 34 to control the reciprocating motion of the fixing rack 33.

[0036] The gear 34 is fixedly mounted inside the camera frame 2 by a fixing rod 35 and is used to transmit the movement of the rack;

[0037] The fixing rod 35 is located inside the camera frame 2 and is used to fix the gear 34.

[0038] The camera rack is set on the side wall of the lens 3. The tail of the lens 3 is square and the camera rack is set on all four sides. When the lens 3 moves back and forth, the state of the retracting roller 13 is controlled by the gear 34.

[0039] The basic principle of this invention:

[0040] When the space camera is in standby mode, the lens 3 retracts inside the camera frame 2, and the light-shielding fan 1 closes under the action of the hinge spring 22 to protect the lens 3.

[0041] When the space camera is working, the lens 3 extends forward, driving the gear 34 via the camera rack, which in turn drives the fixing rack 33, controlling the retraction roller 13 to retract backward. The retraction roller 13 tightens, overcoming the elastic force of the hinge spring 22, causing the light-shielding fan 1 to unfold around the lens 3. The lens 3 continues to extend forward, and the threaded ring 32 drives the retraction roller 13 to rotate via the rotating screw 31. The light-shielding control rope 131 unwinds from the winding on the retraction roller 13 and unfolds under the elastic force of the foldable light-shielding cover 11. The space camera light-shielding cover deformation is completed, blocking stray light in space, enabling the space camera to work efficiently and avoiding external interference.

[0042] When the space camera finishes its work and re-enters standby mode, the lens 3 moves backward. Through the gear 34, the fixing rack 33, and the camera rack, the convergence roller 13 is gradually relaxed. The threaded ring 32 drives the convergence roller 13 to reverse through the rotating screw 31. The light shield control rope 131 is re-wound onto the convergence roller 13, and the foldable light shield 11 is unfolded and stacked inward to form a folded shape, and is put into the light shield storage slot 12. The convergence roller 13 returns to its original shape. As the lens 3 gradually moves backward, the convergence roller 13 gradually relaxes. The light shield fan 1 closes again under the action of the hinge spring 22, forming a pyramid-shaped protective cover to prevent the lens 3 from being worn and to protect the lens 3 again.

Claims

1. A deformable space camera light shield, comprising a camera frame (2), characterized in that: The camera frame (2) is equipped with a lens (3); a groove (21) is provided on the left edge of the camera frame (2); a light-shielding fan (1) is connected to the groove (21) through a hinge spring (22); a light-shielding cover storage slot (12) is provided inside the light-shielding fan (1); a foldable light-shielding cover (11) is provided inside the light-shielding cover storage slot (12); a gathering roller (13) is provided in the middle of the foldable light-shielding cover (11); a gear (34) is meshed with the right side of the lens (3), and a fixing rack (33) is meshed with the outside of the gear (34); the fixing rack (33) is rotatably connected to the right end of the gathering roller (13); a threaded ring (32) is sleeved on the left side of the gathering roller (13) near the fixing rack (33); a rotating screw (31) is fixedly connected on the left side of the gathering roller (13) near the threaded ring (32). A camera rack is provided on the side wall of the lens (3), and the camera rack meshes with the gear (34); When the lens (3) extends forward, the camera rack drives the gear (34) to rotate, which in turn drives the fixed rack (33) to move, causing the retracting roller (13) to retract backward and overcome the spring force of the hinge spring (22), thus causing the light-blocking fan (1) to unfold. As the lens (3) continues to move forward, the threaded ring (32) moves forward along the rotating screw (31) and drives the take-up roller (13) to rotate, causing the control rope (131) of the light shield wound on the take-up roller (13) to be released, and the foldable light shield (11) unfolds under its own elasticity. When the lens (3) moves backward, the camera rack, gear (34) and the fixing rack (33) work together to gradually loosen the gathering roller (13), the threaded ring (32) moves backward along the rotating screw (31) and drives the gathering roller (13) to rotate in the opposite direction, the light shield control rope (131) is rewound, the foldable light shield (11) is folded and stored in the light shield storage slot (12), and the light shield fan (1) is closed under the action of the hinge spring (22).

2. The deformable space camera light shield according to claim 1, characterized in that: The lens (3) is connected to the camera frame (2) via a lifter.

3. The deformable space camera light shield according to claim 1, characterized in that: The foldable sunshade (11) is made of elastic material.

4. The deformable space camera light shield according to claim 1, characterized in that: The gathering roller (13) has a sunshade control rope (131); one end of the sunshade control rope (131) is connected to the gathering roller (13), and the other end is connected to the foldable sunshade (11).

5. A deformable space camera light-shielding protective cover according to claim 1, characterized in that: The gear (34) is fixedly connected to the camera frame (2) via a fixing rod (35).

6. A deformable space camera light-shielding protective cover according to claim 1, characterized in that: The threaded ring (32) is matched with the rotating lead screw (31).

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