Oscillating mirror optical machine device and optical communication equipment

Abstract

The invention relates to the technical field of optical communication, in particular to a swing mirror optical machine device and optical communication equipment. The oscillating mirror light machine device comprises a rotary table, the rotary table comprises an azimuth axis system assembly, a pitch axis system assembly and a pointing mirror assembly, the azimuth axis system assembly is located above the pitch axis system assembly in the height direction of the oscillating mirror light machine device, and light does not pass through the azimuth axis system assembly; the support is provided with a connecting part extending outwards, and the azimuth shaft system assembly is hung on the connecting part; and the rear light path system is mounted on the bracket. By arranging the support, the azimuth axis system assembly of the rotary table is hung on the connecting part of the support, the azimuth axis system assembly is arranged above the pitch axis system assembly, and the whole light path does not pass through the azimuth axis system assembly, so that a light through hole does not need to be formed in the rotary table, and then the installation position of the azimuth axis system assembly does not need to be arranged on the basis of the light through hole; the overall radial size of the azimuth shaft system assembly and the rotary table can be greatly reduced, and the weight of the rotary table is reduced.

Description

Technical Field

[0001] The present application relates to the field of optical communication technology, and in particular to a swing mirror optical mechanism device and optical communication equipment. Background Art

[0002] The oscillating mirror optical communication terminal is a new type of optical communication equipment used in interstellar optical communication systems. As space communications move towards a ground-to-space integrated network, tens of thousands of satellites are needed to establish an interstellar network system. Technological evolution and commercialization have put forward higher requirements for the miniaturization, lightweight and large-scale generation of ATP (capture, tracking and targeting).

[0003] The existing swing mirror ATP optical head mainly includes a coarse tracking and aiming mechanism, a fine tracking and aiming mechanism, a position detection camera, an optical path system, an optical fiber component and a corresponding supporting structure. Among them, the coarse tracking and aiming mechanism is composed of a swing mirror turntable (or pan / tilt) system, and the supporting structure is mainly composed of substrates, frames and other structural parts that connect various groups of components. In addition to connecting various groups of components, the supporting structure also bears the role of realizing the precise, stable connection and fixation of the ATP optical head and the satellite platform. In the existing swing mirror ATP optical head, the turntable system and the optical path system are respectively fixed on both sides of the substrate by screws, and the entire ATP optical head is fixed on the satellite cabin board through the frame shell. The turntable system is an optomechanical system with two-dimensional rotation capability, mainly including an azimuth axis system, a pitch axis system, a pointing mirror and a corresponding supporting structure (such as a U-shaped frame), wherein each axis system is mainly composed of components such as a motor, a bearing, and an encoder. When receiving spatial light information, the spatial light passes through the pointing mirror, the turntable azimuth axis light hole, and the substrate in sequence to reach the optical path system; when emitting light, the optical path is reversed. Since the turntable is equivalent to standing above the substrate, and the optical path entrance is equivalent to hanging below the substrate, this type of turntable is also called a "standing turntable". The azimuth axis of the standing turntable must be transparent, so the size of the motor, bearing and encoder in the turntable azimuth axis system must be based on the transparent size and superimposed on the working size, making the radial size of the turntable system naturally larger, and the balance between the radial size and the height size is more difficult, making it difficult to achieve lightweight and miniaturization of the coarse tracking and aiming mechanism. Summary of the invention

[0004] The present application provides a swing mirror optical-mechanical device and optical communication equipment, in particular, a hanging (or suspended) swing mirror optical-mechanical device and optical communication equipment, which aims to change the installation method and light transmission direction of the turntable and reduce the size of the optical-mechanical device.

[0005] The present application provides a hanging type swing mirror optical mechanical device, the hanging type swing mirror optical mechanical device comprising:

[0006] A turntable, the turntable comprising an azimuth axis assembly, a pitch axis assembly and a pointing mirror assembly axis assembly, the pitch axis assembly can drive the pointing mirror assembly to rotate around the pitch axis, and the azimuth axis assembly can drive the pointing mirror assembly to rotate around the azimuth axis assembly; in the swing mirror optical-mechanical device, the turntable is suspended on the mechanical structure related to the swing mirror optical-mechanical device like a ceiling fan, along the height direction of the swing mirror optical-mechanical device, the azimuth axis assembly is located above the pitch axis assembly, and the azimuth axis assembly is not transparent;

[0007] In view of the hoisting of the turntable, the hanging oscillating mirror optical machine device includes a mechanical structure frame for installing the turntable, namely a bracket, the bracket is provided with a connecting portion extending outward, and the azimuth axis system assembly is hoisted on the connecting portion;

[0008] An optical path system is installed on the bracket, and the bracket can carry the turntable and the rear optical path system.

[0009] In the present application, the turntable is hoisted on the bracket, the optical path system is installed at the bottom of the bracket, and the pointing mirror assembly is driven to rotate by the azimuth axis system assembly and the pitch axis system assembly, so that the pointing mirror assembly receives light from different directions, and the spatial light directly reaches the optical path system after passing through the pointing mirror assembly, without passing through the turntable azimuth axis system. The present application sets a bracket so that the turntable is hoisted on the bracket, and the azimuth axis system assembly of the turntable is hoisted on the connecting part of the bracket, so that the azimuth axis system assembly is arranged above the pitch axis system assembly, and the entire optical path does not pass through the azimuth axis system assembly, then the azimuth axis system assembly does not block the optical path reflected by the pointing mirror assembly, so that there is no need to set a light hole on the turntable, and further, there is no need to set the installation position of the azimuth axis system assembly on the basis of the light hole, so that the size of the azimuth axis system assembly is greatly reduced, so that the radial size of the turntable as a whole is greatly compressed, thereby obtaining a two-dimensional turntable with greatly reduced size and weight.

[0010] In a possible design, the bracket further includes a support portion;

[0011] The supporting portion is connected to the connecting portion along the length direction of the swing mirror optical mechanical device, and the supporting portion is located outside the range of the optical path that can be reflected by the pointing mirror assembly.

[0012] In the present application, the substrate and the flexible support frame are both connected to the support portion of the bracket. The support portion and the connection portion are distributed along the length direction of the swing mirror optical machine device, and the support portion is located outside the range of the optical path that the pointing mirror assembly can reflect, that is, when the pointing mirror assembly rotates from 0° to ±90° around the pitch axis and the azimuth axis, the entire optical path does not pass through the support portion, and the support portion only plays a supporting role for the turntable.

[0013] In a possible design, the support portion includes a connecting segment, a first support segment, and a second support segment;

[0014] The connecting section is connected to the connecting portion, one end of the first supporting section and one end of the second supporting section are both connected to one end of the connecting section away from the connecting portion, and the other ends of the first supporting section and the second supporting section are away from each other.

[0015] In the present application, the connecting section is connected to the connecting portion, and the first supporting section and the second supporting section are both connected to the connecting section to support the connecting section, and then support the connecting portion. The cross-sectional connection line of the first connecting section and the second connecting section is a triangular structure to ensure the stability of the supporting portion.

[0016] In a possible design, the support portion further includes a third support segment;

[0017] One end of the third support segment is connected to one end of the connecting segment close to the connecting portion, and the other end is connected to one end of the first support segment away from the connecting segment. The third support segment is cross-arranged with the second support segment.

[0018] In the present application, the third support segment is cross-set with the second support segment to improve the structural strength of the support portion, and the third support segment supports one end of the connecting segment close to the connecting portion, thereby improving the stability of the connecting portion and reducing the risk of deformation of the connecting segment. Secondly, the third support segment and the first support segment and the second support segment can form a plurality of triangular structures, further ensuring the structural stability of the support portion and improving the bearing capacity of the support portion. In addition, the support portion provided in this embodiment has a simple structure and is convenient for processing and operation.

[0019] The support part can also be set as other structures that can play the role of hoisting the turntable and fixing the base plate and the flexible support member. This embodiment is not specifically limited here.

[0020] In one possible design, the azimuth shafting assembly includes an azimuth shafting member and a support frame;

[0021] Along the height direction of the oscillating mirror optical mechanical device, the azimuth shaft system is installed above the support frame;

[0022] The support frame is connected to the pitch axis system assembly, and the azimuth axis system can drive the support frame to rotate around the azimuth axis.

[0023] In the present application, the pointing mirror assembly is mounted on the pitch axis assembly, the pitch axis assembly can drive the pointing mirror assembly to rotate around the pitch axis, the pitch axis assembly is mounted on the support frame, the azimuth axis assembly is connected to the support frame, the azimuth axis assembly drives the pitch axis assembly to rotate around the azimuth axis through the support frame, and then drives the pointing mirror assembly to rotate around the azimuth axis. In this embodiment, the azimuth axis assembly, the support frame and the pitch axis assembly are arranged from top to bottom, so that the azimuth axis assembly and the support frame do not block the reflected light path, and there is no need to set a light hole on the azimuth axis assembly and the support frame, thereby reducing the radial size of the azimuth axis assembly and the support frame.

[0024] In one possible design, the azimuth shaft system includes a motor and an encoder;

[0025] The encoder is sleeved on the outer ring of the motor.

[0026] In the present application, the housing of the motor is fixedly connected to the connecting part of the bracket, the motor is provided with a sleeve-connected drive shaft and a bearing, the drive shaft is connected to the support frame, the encoder is sleeved on the outer ring of the motor, and the encoder is coaxially arranged with the motor. In this embodiment, there is no need to set a light-through hole between the motor and the encoder, and a small-sized motor and encoder size can be selected, so that the size of the motor, bearing and encoder in the azimuth axis system assembly is greatly reduced, so that the radial size of the turntable as a whole can be greatly compressed, and compared with the prior art in which the motor and the encoder are arranged along the height direction, the present embodiment arranges the small-sized motor, bearing and encoder in the azimuth axis system assembly to be radially stacked, which reduces the height size of the azimuth axis system assembly, and then reduces the height size of the turntable, so that the size of the turntable in this embodiment is reduced by 50% compared with the size of the turntable in the prior art, while the accuracy remains unchanged.

[0027] In a possible design, the oscillating mirror optical-mechanical device further includes a substrate;

[0028] The rear optical path system is fixed to one side of the substrate, and the substrate is fixed to the bracket.

[0029] In the present application, the rear optical path system is disposed in a housing, and the housing is fixed on the side of the substrate away from the bracket, so that all optical elements in the rear optical path system are fixed on one side of the substrate, which is conducive to the adjustment of the optical elements, and further conducive to the batch precision optical adjustment. In addition, in the present embodiment, the turntable is hoisted on the bracket, and the rear optical path system is fixed to the bracket through the substrate, so that the bracket is used as the main bearing member. Compared with the prior art, the weight of the turntable passes through the U-shaped frame, the support plate, and the housing for placing the rear optical path system in sequence, and bears repeated weight multiple times, which requires strengthening the structural rigidity, increasing the weight and size. The overall weight of the present embodiment is not carried multiple times, so the equipment is lightweight.

[0030] In a possible design, the oscillating mirror optical-mechanical device further includes a substrate;

[0031] The rear optical path system is fixed to one side of the substrate, and the substrate and the bracket are an integrated structure.

[0032] In the present application, the substrate and the bracket can be configured as an integrally formed structure, which further increases the structural strength of the bracket.

[0033] In a possible design, the oscillating mirror optical mechanical device further includes a flexible support member, and the flexible support member is used to connect the bracket and the platform;

[0034] The flexible support members are provided in three groups, and the three groups of flexible support members are distributed at the bottom of the bracket in a triangular structure.

[0035] In this application, the flexible support member can be selected as Bipod (flexible support tripod), and each group of flexible support members can be set to one, two, etc. Three groups of flexible support members are distributed in a triangular shape at the bottom of the bracket and connected to the bracket. The three groups of flexible support members form a flexible matrix of the support structure. Compared with the prior art that increases the rigidity of the shell or adds thin gaskets at local positions to reduce the impact of flatness differences on flatness, which is not conducive to large-scale production, this embodiment uses three groups of flexible support members in a triangular structure to lock the bracket and the platform, which solves the problem of poor flatness accuracy of the platform mounting surface, effectively reduces the impact of external dynamic loads on the pointing mirror assembly, does not require grinding gaskets, can be mass-produced, and has high efficiency. The flexible support member has a thermal insulation characteristic, which improves the thermal stability of the swing mirror optical machine device.

[0036] The present application also provides an optical communication device, the optical communication device comprising:

[0037] platform;

[0038] A swing mirror optical mechanical device, wherein the swing mirror optical mechanical device is the swing mirror optical mechanical device described above, and the swing mirror optical mechanical device is installed on the platform.

[0039] In the present application, the platform may be a satellite platform for realizing optical signal transmission between satellites. The optical communication device may also be applied to, but not limited to, ATP (capture, tracking, targeting) systems, other precision assembly and adjustment systems, and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the swing mirror optical head mechanism provided by the prior art;

[0041] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0042] Figure 3 This is a schematic structural diagram of a oscillating mirror optical mechanical device provided in the present application in a specific embodiment;

[0043] Figure 4 A schematic diagram of the structure of the turntable provided in this application;

[0044] Figure 5 A schematic diagram of the connection between the turntable, bracket, substrate and rear optical path system provided in this application;

[0045] Figure 6 This is a schematic diagram of the integrated structure of the bracket and the substrate provided in this application;

[0046] Figure 7 A schematic diagram of the connection between the flexible support member and the bracket provided in this application;

[0047] Figure 8 This is a schematic diagram of the structure of the bracket provided in this application.

[0048] Reference numerals

[0049] 1′-swing mirror optical head mechanism, 11′-turntable, 111′-azimuth motor, 112′-U-shaped frame, 112a′-light hole, 113′-pointing mirror assembly, 12′-support plate, 13′-housing, 14′-rear optical path system, 15′-pitch axis, 16′-azimuth axis, 17′-azimuth encoder, 18′-gasket, 2′-satellite installation interface, 3′-spatial light;

[0050] 1-platform, 2-swing mirror optical-mechanical device, 21-turntable, 211-pointing mirror assembly, 212-azimuth axis assembly, 212a-azimuth axis component, 212a1-motor, 212a2-encoder, 212a3-bearing, 212b-support frame, 213-pitch axis, 214-azimuth axis, 22-bracket, 221-connecting part, 222-supporting part, 222a-connecting section, 222b-first supporting section, 222c-second supporting section, 222d-third supporting section, 23-rear optical path system, 24-substrate, 25-housing, 26-flexible support member;

[0051] Z-height direction, Y-length direction. DETAILED DESCRIPTION

[0052] like Figure 1The figure shows an existing swing mirror optical head mechanism 1′, which is installed on a satellite mounting interface 2′. The swing mirror optical head mechanism 1′ comprises a turntable 11′, a support plate 12′, a shell 13′ and a rear optical path system 14′ inside the shell 13′. The bottom of the turntable 11′ is fixed to the upper side of the support plate 12′ by screws, the rear optical path system 14′ is fixed to the lower side of the support plate 12′, the rear optical path system 14′ is arranged in a metal shell 13′, and the shell 13′ is fixed to the satellite mounting interface 2′ by screws. The turntable 11' is an optical system with two rotational degrees of freedom, including an azimuth motor 111', a pitch motor (not shown in the figure), a U-shaped frame 112' and a pointing mirror 113'. The pitch motor is connected to the pointing mirror 113' to drive the pointing mirror 113' to rotate around the pitch axis 15'. The pitch motor is arranged on the U-shaped frame 112'. The azimuth motor 111' is sleeved on the outside of the U-shaped frame 112'. The azimuth motor 111' axis rotates around the azimuth axis 16' with the U-shaped frame 112' to drive the pitch motor to rotate around the azimuth axis 16', thereby driving the pointing mirror 113' to rotate around the azimuth axis 16'. The U-shaped frame 112' has a light hole 112a' inside for allowing light to pass. When receiving spatial light 3' information, the spatial light 3' passes through the pointing mirror 113', the light hole 112a' and the support plate 12' in sequence and reaches the rear optical path system 14'; when transmitting, the optical path is reversed.

[0053] like Figure 2 The figure shows the swing mirror optical head mechanism 1' after adjusting the angle of the pointing mirror. By adjusting the angle of the pointing mirror 113', light from different directions is received. The size of the light hole 112a' must meet the range of the light path that the pointing mirror 113' can reflect. Therefore, the size of the azimuth motor 111' must be based on the size of the light hole 112a' and the working size, which leads to an increase in the selection of the azimuth motor 111', and further leads to a large radial size of the turntable 11', resulting in a waste of space size. The turntable 11' also includes an azimuth encoder 17' connected to the azimuth motor 111'. Because the radial size of the turntable 11' is large, the azimuth motor 111' and the azimuth encoder 17' need to be arranged along the height direction, which increases the height size of the turntable 11'.

[0054] To solve the above technical problems, Figure 3 As shown, this embodiment provides an optical communication device, which includes a platform 1 and a swing mirror optical mechanical device 2. The swing mirror optical mechanical device 2 is installed on the platform 1. The platform 1 can be a satellite platform for realizing optical signal transmission between satellites. The optical communication device can also be applied to, but not limited to, ATP (capture, tracking, aiming) systems, other precision adjustment systems, etc.

[0055] like Figure 3As shown, in some embodiments, the oscillating mirror optical device 2 includes a turntable 21, a bracket 22 and a rear optical path system 23. The turntable 21 is suspended on the bracket 22, and the rear optical path system 23 is installed at the bottom of the bracket 22. The bracket 22 can carry the turntable 21 and the rear optical path system 23 and install them on the platform 1.

[0056] like Figure 4 As shown, the turntable 21 includes a pointing mirror assembly 211, a pitch axis assembly (not shown in the figure) and an azimuth axis assembly 212. The pitch axis assembly can drive the pointing mirror assembly 211 to rotate around the pitch axis 213, and the azimuth axis assembly 212 can drive the pitch axis assembly to rotate around the azimuth axis 214. Along the height direction Z of the swing mirror optical mechanism 2, the azimuth axis assembly 212 is located above the pitch axis assembly; the bracket 22 is provided with an outwardly extending connection portion 221, and the azimuth axis assembly 212 is hoisted on the connection portion 221.

[0057] In this embodiment, the bracket 22 can be made of metal, the turntable 21 is hoisted on the bracket 22, and the rear optical path system 23 is installed at the bottom of the bracket 22. The pointing mirror assembly 211 is driven to rotate through the azimuth axis assembly 212 and the pitch axis assembly, so that the pointing mirror assembly 211 receives light from different directions, and the spatial light reaches the rear optical path system 23 through the pointing mirror assembly 211. In this embodiment, a bracket 22 is provided so that the turntable 21 is suspended on the bracket 22, and the azimuth axis system assembly 212 of the turntable 21 is suspended on the connecting portion 221 of the bracket 22, so that the azimuth axis system assembly 212 is arranged above the pitch axis system assembly, and the entire optical path does not pass through the azimuth axis system assembly 212. Therefore, the azimuth axis system assembly 212 does not block the optical path reflected by the pointing mirror assembly 211, so that there is no need to set a light-through hole on the turntable 21, and further, there is no need to set the installation position of the azimuth axis system assembly 212 on the basis of the light-through hole, so that the overall radial dimension of the azimuth axis system assembly 212 can be greatly compressed, and the model size of the azimuth axis system assembly 212 is reduced, thereby obtaining a two-dimensional turntable 21 with greatly reduced size and weight.

[0058] Specifically, Figure 4 As shown, the azimuth axis assembly 212 includes an azimuth axis component 212a and a support frame 212b. The azimuth axis component 212a is installed above the support frame 212b along the height direction Z of the oscillating mirror optical mechanism 2. The support frame 212b is connected to the pitch axis assembly, and the azimuth axis component 212a can drive the support frame 212b to rotate around the azimuth axis 214.

[0059] In this embodiment, the pointing mirror assembly 211 is mounted on the pitch axis assembly, the pitch axis assembly drives the pointing mirror assembly 211 to rotate around the pitch axis 213, the pitch axis assembly is mounted on the support frame 212b, the azimuth axis assembly 212a is connected to the support frame 212b, the azimuth axis assembly 212a drives the pitch axis assembly to rotate around the azimuth axis 214 through the support frame 212b, and then drives the pointing mirror assembly 211 to rotate around the azimuth axis 214. In this embodiment, the azimuth axis assembly 212a, the support frame 212b and the pitch axis assembly are arranged from top to bottom, so that the azimuth axis assembly 212a and the support frame 212b do not block the reflected light path, and there is no need to set a light hole on the azimuth axis assembly 212a and the support frame 212b, thereby reducing the radial size of the azimuth axis assembly 212a and the support frame 212b.

[0060] Among them, Figure 4 As shown, the azimuth shaft system 212a includes a motor 212a1 and an encoder 212a2, and the encoder 212a2 is sleeved on the outer ring of the motor 212a1. The encoder 212a2 is used to sense the rotation angle and rotation position of the motor 212a1. In this embodiment, the housing of the motor 212a1 is fixedly connected to the connecting portion 221 of the bracket 22, the motor 212a1 is provided with a sleeve-connected drive shaft and a bearing 212a3, the drive shaft is connected to the support frame 212b, the encoder 212a2 is sleeved on the outer ring of the motor 212a1, and the encoder 212a2 is coaxially arranged with the motor 212a1. In the present embodiment, there is no need to set a light-through hole between the motor 212a1 and the encoder 212a2, and small-sized motor 212a1 and encoder 212a2 can be selected, so that the size of the motor 212a1, bearing 212a2 and encoder 212a3 in the azimuth axis assembly 212 is greatly reduced, so that the overall radial size of the turntable 21 can be greatly compressed. Compared with the prior art in which the motor 212a1 and the encoder 212a2 are arranged along the height direction Z, in the present embodiment, the small-sized motor 212a1, bearing 212a2 and encoder 212a3 in the azimuth axis assembly 212 are arranged to be radially stacked, thereby reducing the height dimension of the azimuth axis assembly 212, and further reducing the height dimension of the turntable 21, so that the size of the turntable 21 in the present embodiment is reduced by 50% compared with the size of the turntable in the prior art, while the accuracy remains unchanged.

[0061] In some embodiments, Figure 5As shown, the oscillating mirror optical mechanism device 2 also includes a substrate 24, the rear optical path system 23 is fixed to one side of the substrate 24, and the substrate 24 is fixed to the bracket 22. In this embodiment, the oscillating mirror optical mechanism device 2 also includes a shell 25 that wraps the rear optical path system 23, and the shell 25 is fixed to the side of the substrate 24 away from the bracket 22, so that all optical elements in the rear optical path system 23 are fixed on one side of the substrate 24, which is beneficial to the adjustment of the optical elements, and further facilitates batch precision optical adjustment. In addition, in this embodiment, the turntable 21 is hoisted on the bracket 22, and the rear optical path system 23 is fixed to the bracket 22 through the substrate 24, so that the bracket 22 is used as the main bearing member. Compared with the above Figure 1 The weight of the turntable in the prior art shown passes through the U-shaped frame 112', the support plate 12', and the outer shell 13' on which the rear optical path system 14' is placed in sequence. The repeated weight needs to be strengthened, and the weight and size need to be increased. The overall weight of this embodiment does not have to be carried multiple times, thereby achieving lightweight equipment.

[0062] In some embodiments, Figure 5 As shown, the oscillating mirror optical mechanism device 2 further includes a substrate 24, and the rear optical path system 23 is fixed to one side of the substrate 24, and the substrate 24 and the bracket 22 are an integral structure. In this embodiment, the substrate 24 and the bracket 22 can be set as an integrally formed structure, which further increases the structural strength of the bracket 22.

[0063] Due to the limitations of the satellite honeycomb cabin structure, manufacturing process and cost, the flatness of the installation surface provided by the satellite platform for the optomechanical device is generally in the order of hundreds of microns. This level of flatness tolerance cannot meet the requirements of the precision optical instrument load. If the optomechanical device is rigidly assembled on the satellite platform with screws, the optical system inside the optomechanical device will be deformed, causing a significant deterioration in optical performance and pointing accuracy. Figure 3 As shown, in some embodiments, the oscillating mirror optical machine device 2 of this embodiment further includes a flexible support member 26, and the flexible support member 26 is used to connect the bracket 22 and the platform 1. The flexible support member 26 is provided in three groups, and the three groups of flexible support members 26 are distributed at the bottom of the bracket 22 in a triangular structure. In this embodiment, the flexible support member 26 can be selected as a Bipod (flexible support tripod), and each group of flexible support members 26 can be provided with one, two, etc. Figure 7 As shown, three groups of flexible support members 26 are distributed in a triangular shape at the bottom of the bracket 22 and connected to the bracket 22. The three groups of flexible support members 26 form a flexible matrix of the support structure. Figure 1The prior art shown in the figure increases the rigidity of the shell, or adds a thin gasket 18' at a local position to reduce the influence of the flatness difference on the flatness, which is not conducive to large-scale production. The present embodiment adopts three groups of flexible support members 26 in a triangular structure to lock the bracket 22 and the platform 1, which solves the problem of poor flatness accuracy of the mounting surface of the platform 1, and effectively reduces the influence of external dynamic loads on the turntable 21. It does not require grinding gaskets, can be mass-produced, and has high efficiency. In addition, the flexible support member 26 has a heat-insulating property, which improves the thermal stability of the swing mirror optical machine device 2.

[0064] like Figure 8 As shown, in some embodiments, the bracket 22 may be made of metal, and the bracket 22 further includes a support portion 222, the support portion 222 is connected to the connection portion 221 along the length direction Y of the swing mirror optical mechanism device 2, and the support portion 222 is located outside the range of the optical path that the pointing mirror assembly 211 can reflect. In this embodiment, the substrate 24 and the flexible support frame 212b are both connected to the support portion 222 of the bracket 22. The support portion 222 and the connection portion 221 are distributed along the length direction Y of the swing mirror optical mechanism device 2, and the support portion 222 is located outside the range of the optical path that the pointing mirror assembly 211 can reflect, that is, when the pointing mirror assembly 211 rotates from 0° to ±90° around the pitch axis 213 and the azimuth axis 214, the entire optical path does not pass through the support portion 222, and the support portion 222 only supports the turntable 21.

[0065] Specifically, Figure 8 As shown, the support portion 222 includes a connecting segment 222a, a first supporting segment 222b and a second supporting segment 222c. The connecting segment 222a is connected to the connecting portion 221. One end of the first supporting segment 222b and the second supporting segment 222c are both connected to one end of the connecting segment 222a away from the connecting portion 221, and the other ends of the first supporting segment 222b and the second supporting segment 222c are away from each other. In this embodiment, the connecting segment 222a is connected to the connecting portion 221, and the first supporting segment 222b and the second supporting segment 222c are both connected to the connecting segment 222a to play the role of supporting the connecting segment 222a, and then play the role of supporting the connecting portion 221. The cross-sectional connection line of the first connecting segment 222a and the second connecting segment 222a is a triangular structure to ensure the stability of the support portion 222.

[0066] like Figure 8As shown, the support portion 222 also includes a third support segment 222d, one end of the third support segment 222d is connected to one end of the connecting segment 222a close to the connecting portion 221, and the other end is connected to one end of the first support segment 222b away from the connecting segment 222a, and the third support segment 222d is cross-arranged with the second support segment 222c. In this embodiment, the third support segment 222d and the second support segment 222c are cross-arranged to improve the structural strength of the support portion 222, and the third support segment 222d supports one end of the connecting segment 222a close to the connecting portion 221, improves the stability of the connecting portion 221, and reduces the risk of deformation of the connecting segment 222a. Secondly, the third support segment 222d and the first support segment 222b and the second support segment 222c can form a plurality of triangular structures, further ensuring the structural stability of the support portion 222 and improving the bearing capacity of the support portion 222. In addition, the support portion 222 provided in this embodiment has a simple structure and is convenient for processing and operation.

[0067] The support portion 222 may also be configured as other structures that can play the role of hoisting the turntable 21 and fixing the base plate 24 and the flexible support member 26 , which is not specifically limited in this embodiment.

[0068] like Figure 7 The figure shows a top view of the bracket 22, in which the right side of the dotted line is the connecting portion 221, the left side of the dotted line is the supporting portion 222, and the dotted line represents the second supporting segment 222c. In some embodiments, the arrangement of the flexible support members 26 at the bottom of the supporting portion 222 can be: two groups of flexible support members 26 can be relatively arranged at one end of the second supporting segment 222c away from the connecting segment 222a, and another group of flexible support members 26 can be arranged in the middle part of the first supporting segment 222b away from one end of the connecting segment 222a, so that the connecting lines of the three groups of flexible support members 26 are triangular.

Claims

1. A oscillating mirror optical machine device, It is characterized in that The oscillating mirror optical machine device comprises: A turntable, the turntable comprising an azimuth axis assembly, a pitch axis assembly and a pointing mirror assembly, the pitch axis assembly being capable of driving the pointing mirror assembly to rotate around the pitch axis, and the azimuth axis assembly being capable of driving the pointing mirror assembly to rotate around the azimuth axis; along the height direction of the swing mirror optical machine device, the azimuth axis assembly is located above the pitch axis assembly, and the azimuth axis assembly is not transparent; A bracket, wherein the bracket is provided with a connecting portion extending outward, and the azimuth shaft system assembly is hoisted on the connecting portion; A rear optical path system is installed on the bracket, and the bracket can carry the turntable and the rear optical path system.

2. The oscillating mirror optical machine device according to claim 1, It is characterized in that The bracket also includes a support portion; The supporting portion is connected to the connecting portion along the length direction of the swing mirror optical mechanical device, and the supporting portion is located outside the range of the optical path that can be reflected by the pointing mirror assembly.

3. The oscillating mirror optical machine device according to claim 2, It is characterized in that The support portion includes a connecting section, a first support section, and a second support section; The connecting section is connected to the connecting portion, one end of the first supporting section and one end of the second supporting section are both connected to one end of the connecting section away from the connecting portion, and the other ends of the first supporting section and the second supporting section are away from each other.

4. The oscillating mirror optical machine device according to claim 3, It is characterized in that The support portion further includes a third support segment; One end of the third support segment is connected to one end of the connecting segment close to the connecting portion, and the other end is connected to one end of the first support segment away from the connecting segment. The third support segment is cross-arranged with the second support segment.

5. The oscillating mirror optical machine device according to claim 1, It is characterized in that The azimuth shafting assembly comprises an azimuth shafting member and a support frame; Along the height direction of the oscillating mirror optical mechanical device, the azimuth shaft system is installed above the support frame; The support frame is connected to the pitch axis system assembly, and the azimuth axis system can drive the support frame to rotate around the azimuth axis.

6. The oscillating mirror optical machine device according to claim 5, It is characterized in that The azimuth shaft system includes a motor and an encoder; The encoder is sleeved on the outer ring of the motor.

7. The oscillating mirror optical machine device according to any one of claims 1 to 6, It is characterized in that The oscillating mirror optical mechanical device further includes a substrate; The rear optical path system is fixed to one side of the substrate, and the substrate is fixed to the bracket.

8. The oscillating mirror optical machine device according to any one of claims 1 to 6, It is characterized in that The oscillating mirror optical-mechanical device further comprises a substrate; The rear optical path system is fixed to one side of the substrate, and the substrate and the bracket are an integrated structure.

9. The oscillating mirror optical machine device according to any one of claims 1 to 6, It is characterized in that The oscillating mirror optical machine device further comprises a flexible support member, and the flexible support member is used to connect the bracket and the platform; The flexible support members are provided in three groups, and the three groups of flexible support members are distributed at the bottom of the bracket in a triangular structure.

10. An optical communication device, It is characterized in that The optical communication equipment comprises: platform; A oscillating mirror optical-mechanical device, wherein the oscillating mirror optical-mechanical device is the oscillating mirror optical-mechanical device according to any one of claims 1 to 9, and the oscillating mirror optical-mechanical device is installed on the platform.

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