Small airborne laser communication terminal structure

Abstract

The utility model relates to a small airborne laser communication terminal structure, which comprises a shell, an upper cover and a rear cover, the shell is in a cuboid shape, an optical antenna and a QD are arranged outside one side of the shell, a fast reflecting mirror, a dichroic mirror, a reflecting mirror, a signal receiving unit and a signal transmitting unit are arranged in the shell, the fast reflecting mirror is arranged on one side of the optical antenna, a 45-degree included angle is formed between the fast reflecting mirror and the horizontal plane, and the dichroic mirror and the reflecting mirror are sequentially arranged below the fast reflecting mirror. The dichroic mirror and the reflecting mirror are arranged in parallel, an included angle of 90 degrees is formed between the dichroic mirror and the fast reflecting mirror, the signal transmitting unit is arranged on one side of the dichroic mirror, and the signal receiving unit is arranged on one side of the reflecting mirror and connected with the QD; the fast reflecting mirror, the dichroic mirror and the reflecting mirror are arranged on one side close to the rear cover, and the optical antenna and the QD are arranged on the other side opposite to the rear cover. According to the utility model, while miniaturization and light weight are considered, high-efficiency and high-stability communication capability can be maintained.

Description

Technical Field

[0001] This utility model relates to communication terminal structure, specifically a small airborne laser communication terminal structure. Background Technology

[0002] With the rapid development of space optical communication technology, laser communication has gained attention due to its unique advantages. Laser communication features wide bandwidth, large information carrying capacity, small antenna size, high optical gain, low power consumption, and strong anti-interception capabilities. These advantages make laser communication particularly important for high-speed communication. Furthermore, laser communication technology demonstrates enormous application potential in areas such as inter-satellite communication and communication between ground and satellites.

[0003] The design background and application scenarios of ultra-miniature airborne laser communication terminals are closely related. In the field of satellite communication, the demand for miniaturized and lightweight laser communication terminals is increasing.

[0004] Existing airborne laser communication terminals struggle to simultaneously achieve miniaturization and lightweight design while maintaining high efficiency and stability in communication capabilities. Therefore, designing an ultra-miniature airborne laser communication terminal structure is of paramount importance. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a small airborne laser communication terminal structure that, while taking into account its miniaturization and lightweight design, can maintain high efficiency and high stability in communication capabilities.

[0006] According to the technical solution provided by this utility model, a small airborne laser communication terminal structure includes a housing, a top cover, and a rear cover; the housing is rectangular, with an optical antenna and a QD (Quick Detector) disposed on one side of its exterior; the housing contains a fast reflector, a dichroic mirror, a reflector, a signal receiving unit, and a signal transmitting unit; the fast reflector is disposed on one side of the optical antenna and forms a 45° angle with the horizontal plane; the dichroic mirror and the reflector are disposed below the fast reflector in sequence, and the dichroic mirror and the reflector are arranged parallel to each other and form a 90° angle with the fast reflector; the signal transmitting unit is disposed on one side of the dichroic mirror; and the signal receiving unit is disposed on one side of the reflector and connected to the QD.

[0007] The fast-reflecting mirror, dichroic mirror, and reflector are located on one side near the back cover, while the optical antenna and QD are located on the other side opposite the back cover.

[0008] As a further improvement of this utility model, the signal receiving unit is an integrated unit for both signal receiving and beacon receiving.

[0009] As a further improvement of this utility model, a mounting edge is provided on the upper end of the housing near the optical antenna for mounting the top cover.

[0010] As a further improvement of this utility model, the housing is provided with a mounting hole near the top cover, and the mounting hole is welded inside the housing.

[0011] As a further improvement of this utility model, the side wall of the housing is provided with a disc protrusion for connecting a U-shaped gimbal, so as to fix the communication terminal on the device in use.

[0012] As a further improvement of this utility model, multiple grooves are provided around the disc protrusion to reduce the weight of the housing.

[0013] As a further improvement of this utility model, multiple side covers are provided around the housing for maintenance.

[0014] As a further improvement of this utility model, the side cover is positioned close to the rear cover.

[0015] The beneficial effects of this utility model are as follows:

[0016] The casing and top cover of this communication terminal are made of high-strength aluminum alloy structural components, which have good integration and high strength, high rigidity, good impact resistance and corrosion resistance, giving the communication terminal the advantages of small weight and high strength.

[0017] The edges of the top and rear covers of this communication terminal mate with the mounting edge of the housing, ensuring quick alignment of the top and rear covers. Additionally, the side covers open to access the internal modules, offering convenient maintenance and debugging.

[0018] This communication terminal makes full use of the internal space and consists of an optical antenna, a fast reflector, a dichroic mirror, a reflector, a signal light transmitting unit, a signal light (precision beacon light) receiving lens, and a QD (Quick Diffuser). The overall dimensions are 60×110×126.1mm.

[0019] The signal receiving unit of this communication terminal integrates signal reception and beacon reception, reducing space occupation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the shell structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the cage structure of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Top cover; 3. Rear cover; 4. Quick-reflecting mirror; 5. Dichroic mirror; 6. Reflector; 7. Optical antenna; 8. Signal transmitting unit; 9. QD; 10. Signal receiving unit; 11. Mounting edge; 12. Mounting hole; 13. Disc protrusion; 14. Groove; 15. Side cover; 16. Cage structure. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the embodiments shown in the accompanying drawings:

[0025] like Figure 1 As shown, a small airborne laser communication terminal structure includes a housing 1, a top cover 2, and a rear cover 3. The housing 1 is rectangular, with an optical antenna 7 and a QD9 disposed on one side of its exterior. Inside the housing 1 are a fast reflector 4, a dichroic mirror 5, a reflector 6, a signal receiving unit 10, and a signal transmitting unit 8. The fast reflector 4 is disposed on one side of the optical antenna 7 and forms a 45° angle with the horizontal plane. Below the fast reflector 4, the dichroic mirror 5 and the reflector 6 are disposed in sequence. The dichroic mirror 5 and the reflector 6 are arranged parallel to each other and form a 90° angle with the fast reflector 4. The signal transmitting unit 8 is disposed on one side of the dichroic mirror 5, and the signal receiving unit 10 is disposed on one side of the reflector 6 and connected to the QD9.

[0026] The fast-reflecting mirror 4, dichroic mirror 5, and reflector 6 are located on one side near the rear cover and fixed in the cage structure 16, which improves stability and facilitates maintenance and installation; the optical antenna 7 and QD9 are located on the other side opposite to the rear cover 3.

[0027] The signal receiving unit 10 integrates signal receiving and beacon receiving, reducing space occupation.

[0028] The upper end of the housing 1 is provided with a mounting edge 11 on the side near the optical antenna 7 for mounting the top cover 2; the housing 1 is provided with a mounting hole 12 near the top cover 2, and the mounting hole 12 is welded inside the housing 1. This arrangement does not affect the strength of the housing 1 and the semi-circular top cover 2.

[0029] The side wall of housing 1 is provided with a disc protrusion 13 for connecting a U-shaped gimbal to fix the communication terminal on the device. Multiple grooves 14 are provided around the disc protrusion 13 to reduce the weight of housing 1. Multiple side covers 15 are provided around housing 1 for maintenance. The side covers 15 are positioned close to the rear cover 3 for easy installation and maintenance of the three lenses, such as... Figure 2 As shown.

[0030] The received light (laser emitted by the opposing communication terminal) is beam-contracted by the optical antenna 7, reflected by the fast reflector 4, and reflected by the reflector 6, and finally reflected into the signal receiving lens 10. The QD9 receives the received light and converts it into an electrical signal for demodulation.

[0031] The emitted light is emitted by the signal emitting unit 8, reflected by the dichroic mirror 5, and then reflected by the fast reflector 4 to the optical antenna 7, from which the expanded signal light is emitted.

[0032] The casing is made of 7075 aluminum alloy and weighs 0.365 kg.

[0033] The lens barrel of optical antenna 7 is made of 7075 aluminum alloy, and the overall weight is 0.09kg.

[0034] The quick-reflecting mirror 4, dichroic mirror 5, reflector 6, and signal transmitting unit 8 are fixed on the cage-like structure, with an overall weight of 0.092 kg. Figure 3 As shown.

[0035] The signal receiving unit 10 includes a signal receiving lens and a flange, which are fixed to the housing by the flange. The lens barrel and flange are made of 7075 aluminum alloy, and the overall weight is 0.02kg.

[0036] The overall dimensions of this utility model are 60×110×126.1mm. The total weight is 0.624kg.

Claims

1. A small airborne laser communication terminal structure, characterized in that, The device includes a housing (1), a top cover (2), and a back cover (3). The housing (1) is rectangular, with an optical antenna (7) and a QD (9) on one side of its exterior. Inside the housing (1) are a fast reflector (4), a dichroic mirror (5), a reflector (6), a signal receiving unit (10), and a signal transmitting unit (8). The fast reflector (4) is located on one side of the optical antenna (7) and forms a 45° angle with the horizontal plane. Below the fast reflector (4) are arranged the dichroic mirror (5) and the reflector (6) in sequence. The dichroic mirror (5) and the reflector (6) are arranged in parallel and form a 90° angle with the fast reflector (4). The signal transmitting unit (8) is located on one side of the dichroic mirror (5), and the signal receiving unit (10) is located on one side of the reflector (6) and connected to the QD (9). The fast reflector (4), dichroic mirror (5) and reflector (6) are located on one side near the back cover, and the optical antenna (7) and QD (9) are located on the other side opposite to the back cover (3).

2. The structure of a small airborne laser communication terminal as described in claim 1, characterized in that, The signal receiving unit (10) is an integrated unit for both signal receiving and beacon receiving.

3. The structure of a small airborne laser communication terminal as described in claim 1, characterized in that, The upper end of the housing (1) is provided with a mounting edge (11) on the side near the optical antenna (7) for mounting the top cover (2).

4. The structure of a small airborne laser communication terminal as described in claim 3, characterized in that, The housing (1) has a mounting hole (12) near the top cover (2), and the mounting hole (12) is welded inside the housing (1).

5. The structure of a small airborne laser communication terminal as described in claim 1, characterized in that, The side wall of the housing (1) is provided with a disc protrusion (13) for connecting a U-shaped gimbal to fix the communication terminal on the device.

6. The structure of a small airborne laser communication terminal as described in claim 5, characterized in that, The disc protrusion (13) is surrounded by a plurality of grooves (14) to reduce the weight of the housing (1).

7. The structure of a small airborne laser communication terminal as described in claim 5, characterized in that, The housing (1) is surrounded by a plurality of side covers (15) for maintenance.

8. The structure of a small airborne laser communication terminal as described in claim 7, characterized in that, The side cover (15) is positioned close to the rear cover (3).

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