Remote sensing camera focusing structure and ground simulation infinite debugging focusing device

Abstract

The utility model relates to a remote sensing camera focusing structure, in particular to a ground simulation infinite debugging focusing device. The remote sensing camera comprises a lens and a camera which are arranged on the same optical axis; the focusing structure comprises a transmission half gear and a focusing assembly; the transmission half gear is fixed on the lens; the focusing assembly is engaged with the transmission half gear and drives the transmission half gear to rotate through a transmission rod and a transmission bearing so as to adjust the focal length of the lens. The structure provided by the utility model has the characteristics of good stability, high precision, high response speed and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to remote sensing technical field especially is a kind of remote sensing camera focusing structure, ground simulation infinity debugging focusing device. BACKGROUND

[0002] Remote sensing camera is an important optical imaging equipment, and is widely used in aerospace, geographic surveying and mapping, environmental monitoring and other fields. Its core function is to capture image information of remote target through optical system, and the definition and resolution of image directly affect the accuracy of subsequent data processing. Therefore, the focusing technology of remote sensing camera is the key link to ensure imaging quality.

[0003] Traditional remote sensing camera focusing technology usually relies on manual operation or simple motor drive system. Manual focusing mode is not only inefficient, but also the focusing accuracy is difficult to guarantee, especially in complex environment (such as temperature change, mechanical vibration, etc.), the limitation of manual focusing is more obvious. While the existing motor-driven focusing system improves the automation level of focusing to some extent, but still has problems of insufficient transmission accuracy, slow response speed and poor environmental adaptability. SUMMARY

[0004] Therefore, it is necessary to provide a remote sensing camera focusing structure with good stability, high precision and high response speed, and a ground simulation infinity debugging focusing device.

[0005] A remote sensing camera focusing structure, the remote sensing camera includes a lens and a camera arranged on the same optical axis, the focusing structure includes a transmission half gear and a focusing assembly; the transmission half gear is fixed on the lens; the focusing assembly is engaged with the transmission half gear and drives the transmission half gear to rotate through the transmission rod and transmission bearing, so as to adjust the focal length of the lens.

[0006] In one embodiment, an adapter ring is arranged between the lens and the camera; the camera, the adapter ring and the lens are arranged on the same optical axis.

[0007] In one embodiment, the transmission half gear is in the shape of a ring, the inner wall shape of the transmission half gear is matched with the outer surface shape of the lens, and the transmission half gear is detachably sleeved on the lens.

[0008] In one embodiment, the transmission half gear is in the shape of an arc, the shape of the arc is matched with the outer surface shape of the lens, and the transmission half gear is detachably fixed on the lens.

[0009] In one embodiment, the focusing assembly includes a driving gear, a transmission rod, a first transmission bearing, an engagement gear and a second transmission bearing which are mechanically connected in sequence; the engagement gear is engaged with the transmission half gear.

[0010] In one embodiment, the motor is mechanically connected to the drive gear.

[0011] In one embodiment, the fixing assembly includes a base plate and a fixing ring, the motor and the camera are fixed on the base plate, and the lens is detachably fixed on the base plate through the fixing ring.

[0012] The ground simulation infinite focus debugging device adopts the remote sensing camera focusing structure for focus debugging.

[0013] In one embodiment, the collimator is coaxially arranged with the remote sensing camera.

[0014] The collimator obtains an infinite target image, and the focusing assembly focuses the lens according to the infinite target image.

[0015] In one embodiment, the scale plate of the collimator is a cross scale plate, a discrimination rate plate, a star point plate or a Borel plate.

[0016] Compared with the prior art, the remote sensing camera focusing structure and the ground simulation infinite focus debugging device have the following effects:

[0017] 1. The focusing assembly adopts a mechanical transmission mode of a transmission rod and a transmission bearing, can avoid shaking and deviation in the focusing process, has good stability, and ensures the imaging quality of the camera.

[0018] 2. The rotation amount of the transmission half gear controls the focus adjustment amount, can ensure high-precision adjustment in the focusing process, and ensures the accuracy of the focusing process.

[0019] 3. The meshing of the focusing assembly and the transmission half gear drives the rotation of the transmission half gear, can realize quick response in the focusing process, ensures the efficiency of the focusing process, has wide application, and has strong adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to the structures shown in these drawings without creative labor.

[0021] Figure 1 The remote sensing camera focusing structure provided for the embodiment 1 is shown in the schematic view.

[0022] Figure 2 The focusing structure structure diagram provided for example 1;

[0023] Figure 3 The ground simulation infinite focus device debugging schematic diagram provided for example 2.

[0024] Mark explanation:

[0025] Remote sensing camera 1, lens 11, camera 12, focusing structure 2, transmission half gear 21, gear segment 211, drive gear 22, transmission rod 23, first transmission bearing 24, meshing gear 25, second transmission bearing 26, adapter ring 3, motor 4, bottom plate 51, fixed ring 52, parallel light pipe 6, measurement and control system 7, power supply 8.

[0026] The realization, functional characteristics and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. Specific implementation

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0029] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0030] In the utility model, unless another definite provision and limitation, the terms "connect", "fix" and the like should be broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection, can also be physical connection or wireless communication connection;Can be direct connection, also can be indirectly connected through the intermediate medium, can be the communication or the interaction relationship of two elements inside two elements, unless another definite limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0031] The embodiment of the utility model will be described in detail below with the drawings in the utility model embodiment figure.

[0032] Example 1

[0033] The embodiment discloses a kind of remote sensing camera focusing structure, by the mechanical transmission mode of transmission rod and transmission bearing of focusing assembly, can avoid the jitter and deviation in focusing process, good stability, ensure the imaging quality of camera. The rotation amount of transmission half gear controls focal length adjustment amount, can guarantee the high-precision adjustment in focusing process, ensure the accuracy of focusing process. By the meshing of focusing assembly and transmission half gear, drive the rotation of transmission half gear, can realize the quick response in focusing process, ensure the high efficiency of focusing process, widely used, strong adaptability.

[0034] As Figure 1 And Figure 2 As shown, the remote sensing camera focusing structure provided by the embodiment, remote sensing camera 1 includes lens 11 and camera 12 with optical axis arrangement, focusing structure 2 includes transmission half gear 21 and focusing assembly;Transmission half gear 21 is fixed on lens 11;Focusing assembly is engaged with transmission half gear 21, and transmission half gear 21 is driven to rotate by the mode of transmission rod and transmission bearing, to adjust the focal length of lens 11.

[0035] Specifically, adapter ring 3 is arranged between lens 11 and camera 12;Camera 12, adapter ring 3 and lens 11 are arranged with optical axis, and the optical axis of lens 11 and camera 12 is aligned by adapter ring 3.

[0036] The transmission half gear 21 is fixed on the body of the lens 11, and is made of the same material as the transmission structure, such as stainless steel, and can be designed as a circular ring or an arc. When the transmission half gear 21 is in the form of a circular ring, the inner wall shape is matched with the outer surface shape of the lens 11, and is detachably sleeved on the lens 11. When the transmission half gear 21 is in the form of an arc, the arc shape is matched with the outer surface shape of the lens 11, and is detachably fixed on the lens 11, thereby driving the lens to operate and focus. The detachable connection includes but is not limited to buckle connection, threaded connection, pin connection, magnetic connection, plug-in connection, etc., which is selected according to the requirements.

[0037] A gear segment 211 is arranged on the outer surface of the transmission half gear 21, and the gear segment 211 is engaged with the focusing assembly. It is worth noting that because the rotation angle of the transmission half gear 21 is proportional to the focus adjustment amount of the lens 11, the length of the gear segment 211 and the size precision of the gear can be designed according to the size of the focus adjustment amount required by the lens 11, so as to control the focus adjustment amount by controlling the rotation angle of the transmission half gear 21, and finally realize high-precision focusing.

[0038] A fixing assembly is also provided to ensure the stability of the lens 11, the camera 12, the focusing assembly and the motor. The fixing assembly includes a bottom plate 51 and a fixing ring 52. The bottom plate 51 is a regular or irregular strip-shaped structure, and the camera 4 is fixed on one side of the bottom plate 51 along the length direction of the bottom plate 51. The lens 11 is detachably fixed on the other side of the bottom plate 51 through the fixing ring 52. The detachable connection includes but is not limited to buckle connection, threaded connection, pin connection, magnetic connection, plug-in connection, etc., which is selected according to the requirements. The adapter ring 3 is located between the lens 11 and the camera 4. Then, according to the free space of the bottom plate 51 and the position of the gear segment 211 of the transmission half gear 21, the focusing assembly and the motor 4 are arranged correspondingly.

[0039] In this embodiment, the motor 4 is located beside the camera 12; the focusing assembly is arranged along the length direction of the bottom plate 51, and one end thereof is mechanically connected with the motor 4, and the other end thereof is engaged with the transmission half gear 21.

[0040] The focusing assembly includes a driving gear 22, a transmission rod 23, a first transmission bearing 24, an engagement gear 25 and a second transmission bearing 26 which are mechanically connected in sequence. The driving gear 22 is two, and the two driving gears 22 are in engagement. One of the driving gears 22 is mechanically connected with the output shaft of the motor 4, and the other driving gear 22 is mechanically connected with the transmission rod 23. The engagement gear 25 is engaged with the transmission half gear 21. It is worth noting that the number and mode of the transmission rod and the transmission bearing are designed according to the specific circumstances, and this embodiment only shows one of the connection modes.

[0041] The driving gear 22 is driven to rotate clockwise or counterclockwise by the motor 4, and the rotating force is transmitted to the meshing gear 25 through the transmission rod 23 and the transmission bearing 24, and the meshing gear 25 further drives the transmission half gear 21 to rotate clockwise or counterclockwise, so as to complete the focusing control of the lens 11.

[0042] Embodiment 2

[0043] Based on the remote camera focusing structure in embodiment 1, this embodiment discloses a ground simulation infinite focus adjustment device, which is as shown in the figure. Figure 3 As shown in the figure, the remote camera focusing structure in embodiment 1 is used for focus adjustment.

[0044] Specifically, the ground simulation infinite focus adjustment device comprises a collimator 6 and a remote camera focusing structure, and the collimator 6 is coaxial with the lens 11, the adapter ring 3 and the camera 12 in the remote camera 1. The collimator 6 is used to obtain a light beam from infinity to simulate an infinite target image, and then the focusing assembly drives the transmission half gear 21 to rotate through the transmission rod and the transmission bearing based on the infinite target image, so as to adjust the focal length of the lens 11 and fix the focus. After fixing the focus, the lens 11 is verified by aiming at a ground target 5 kilometers away from the ground 5, and if a clear image can be obtained, it means that the focusing is completed. After the ground focusing of the remote camera 1, the remote camera 1 can be put into space, and the design value and performance of the remote camera 1 can be optimized. At the same time, the unnecessary adjustment operation after the remote camera 1 is put into space is avoided, the clear image data can be successfully obtained after the remote camera 1 is put into space, the operation of the remote camera 1 after being put into space is more simple and efficient, and the risk of remote imaging is lower.

[0045] The collimator 6 is one of the important tools for calibrating and adjusting optical instruments, and is also an important part of optical measurement instruments. When it is used with different division plates, together with a micrometer objective lens or a microscope system, it can measure the focal length, resolution and other imaging quality of a lens or a lens group. The division plate has a cross division plate, a resolution plate, a star point plate and a boro plate. The resolution plate is preferably selected, which can better observe the clarity of the obtained image. A light source is also required, which can be a general illuminating lamp (2.1W, 6V).

[0046] During focusing, the lens 11 is aligned with the center line in the collimator 6 as much as possible, so that the image of the division plate of the collimator 6 can be quickly obtained, and then the remote camera 1 is focused and fixed according to the image of the division plate.

[0047] Further, a measurement and control system 7 is also required, which is the upper computer operation software of the electronic part in the remote camera 1, and is mainly used to control and debug the remote camera 1. The specific functions include identifying the camera 12, setting the corresponding parameters, starting real-time shooting, obtaining a clear image, etc.

[0048] When focusing and focusing based on the collimator 6, in order to ensure the inspection or measurement accuracy, the focal length of the lens or lens group to be inspected is preferably not more than half of the focal length of the collimator 6; when focusing, the focusing standard of the lens 11 of the remote sensing camera 1 is to find the critical point of clarity and blur; after focusing, the collimator 6 is removed, and the remote sensing camera 1 is verified by the natural far target outdoors.

[0049] When working, the meshing gear 25 at the center position of the transmission half gear 21 is set as the motor origin position, and the power supply 8 provides power for the motor 4. The measurement and control system 7 drives the motor 4 through instructions, thereby driving the lens 11 to control the focal length, and when the clear image of the discrimination rate plate of the collimator 6 is photographed, the focus is fixed, the absolute position of the position at this time relative to the origin is recorded, and then the remote sensing camera 1 is verified by the natural far target 5 kilometers away outdoors, and the focusing and focusing are completed.

[0050] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0051] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A remote sensing camera focusing structure, comprising: The remote sensing camera comprises a lens and a camera arranged on the same optical axis, and the focusing structure comprises a transmission half gear and a focusing assembly; The transmission half gear is fixed on the lens, and the focusing assembly is engaged with the transmission half gear and drives the transmission half gear to rotate through a transmission rod and a transmission bearing to adjust the focal length of the lens.

2. The remote sensing camera focusing structure of claim 1, wherein, A conversion ring is arranged between the lens and the camera, and the camera, the conversion ring and the lens are arranged on the same optical axis.

3. The remote sensing camera focusing structure of claim 1, wherein, The transmission half gear is in the shape of a ring, the inner wall of which is matched with the outer surface of the lens and is detachably sleeved on the lens.

4. The remote sensing camera focusing structure of claim 1, wherein, The transmission half gear is in the shape of an arc, the shape of which is matched with the outer surface of the lens and is detachably fixed on the lens to drive the lens to rotate and focus.

5. The remote sensing camera focusing structure of claim 3 or 4, wherein, The focusing assembly comprises a driving gear, a transmission rod, a first transmission bearing, an engagement gear and a second transmission bearing which are mechanically connected in sequence, and the engagement gear is engaged with the transmission half gear.

6. The remote sensing camera focusing structure of claim 5, wherein, A motor is further included, and the motor is mechanically connected with the driving gear.

7. The remote sensing camera focusing structure of claim 6, wherein, A fixing assembly is further included, and the fixing assembly comprises a bottom plate and a fixing ring. The motor and the camera are fixed on the bottom plate, and the lens is detachably fixed on the bottom plate through the fixing ring.

8. A ground simulation infinity focus adjustment device, characterized by, The focusing structure of the remote sensing camera according to any one of claims 1 to 7 is used for focusing.

9. Ground simulation infinity focus adjustment apparatus according to claim 8, characterized in that A collimator is further included, and the collimator is arranged on the same optical axis with the remote sensing camera. The collimator obtains an image of an infinite distance target, and the focusing assembly focuses the lens according to the image of the infinite distance target.

10. The ground simulation infinity debug focusing device according to claim 9, wherein, The graticule plate of the collimator is a cross graticule plate, a discrimination rate plate, a star point plate or a Boro plate.

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