CN213042051U - Two-dimensional rotary table and card type lens system - Google Patents
Two-dimensional rotary table and card type lens system Download PDFInfo
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- CN213042051U CN213042051U CN202021620932.3U CN202021620932U CN213042051U CN 213042051 U CN213042051 U CN 213042051U CN 202021620932 U CN202021620932 U CN 202021620932U CN 213042051 U CN213042051 U CN 213042051U
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Abstract
The application provides a two-dimensional turntable and a card type lens system, wherein the two-dimensional turntable comprises a middle block, a fork arm and an azimuth axis turntable; and the middle piece is hollow cylindricality, and the middle part of middle piece is provided with every single move axle connecting portion, therefore the middle piece orthographic projection of this application is "one" font, and the internal diameter of middle piece matches with the optical substrate of card formula camera lens for the compact and the light in weight of middle piece. Because the intermediate block is arranged between the arm bodies, the volume of the fork arm is compact and the weight is light, so that the two-dimensional rotary table has the characteristics of small volume and light weight. Further, a substrate mounting table for fixing an optical substrate in the cassette lens is provided inside the bottom of the intermediate block. Therefore, the middle block is provided with the substrate mounting table on the inner side of the bottom of the middle block, so that the gravity center of the card type lens can be reduced, and the stability of the card type lens is greatly improved.
Description
Technical Field
The application relates to the technical field of quantum communication equipment, in particular to a two-dimensional rotary table and a card type lens system.
Background
Quantum communication refers to an information interaction mode for message transmission by applying the basic theorem in quantum mechanics. At present, there are two main photon transmission modes in quantum communication, one is to use optical fiber as a channel to realize photon transmission between two transmitting and receiving parties, and the other is to use free space as a channel to realize photon transmission between two transmitting and receiving parties. The transceiver for free space quantum communication generally adopts a cassegrain lens to transmit and capture single photons, the cassegrain lens is also called a card lens, and a card lens with high stability, high precision and high communication efficiency is required for establishing a free space quantum communication system, so that the card lens is a key component of the free space quantum channel system.
When the card type lens works, the card type lens needs to be rotated to aim, track and capture quantum light. Therefore, the prior art generally places the cassette lens on the two-dimensional turntable, the structure of the existing two-dimensional turntable is shown in fig. 1, and generally comprises an azimuth axis turntable 1, a yoke 2 and a pitch axis turntable 3, the bottom of the yoke 2 is installed on the azimuth axis turntable 1, the pitch axis turntable 3 is installed on the upper portion of the yoke 2, and the cassette lens is installed on the pitch axis turntable 3. During working, the rotation of the azimuth axis rotary table 1 and the rotation of the pitch axis rotary table 3 enable the card type lens to realize the rapid aiming, tracking and capturing work of quantum light.
However, in order to reduce the center of gravity of the cassette lens and maintain the stability of the cassette lens, the conventional tilt-axis turret 3 is generally U-shaped, and thus the volume of the tilt-axis turret 3 is large, which results in high quality of the tilt-axis turret 3. In addition, since the pitch axis turret 3 is U-shaped, the volume of the yoke 1 is designed to be relatively large in order to mount the pitch axis turret 3 having a relatively large volume on the yoke 1, and thus the mass of the yoke 1 is also high. Therefore, the pitch axis turntable 3 and the fork arm 2 in the prior art have large volume and high mass, so that the two-dimensional turntable has large volume and high quality.
Disclosure of Invention
The application provides a two-dimensional rotary table and a card type lens system to solve the problem that the two-dimensional rotary table is large in size and high in quality in the existing scheme.
The application provides a two-dimensional rotary table in a first aspect, which comprises a middle block, a fork arm and an azimuth axis rotary table;
the middle block is in a hollow cylindrical shape, the middle part of the middle block is provided with a pitching shaft connecting part, the inner side of the bottom of the middle block is provided with a substrate mounting table, the substrate mounting table is used for fixing an optical substrate in a cassette lens, the fork arm comprises an arm body, and the upper part of the arm body is provided with a pitching shaft driving part;
the middle block is arranged between the arm bodies, the pitching shaft connecting portion is connected with the pitching shaft driving portion, the pitching shaft driving portion is used for controlling the pitching angle of the middle block, the fork arm is arranged on the azimuth shaft rotary table, and the azimuth shaft rotary table is used for controlling the rotating angle of the fork arm.
Preferably, the top of the middle block is further provided with a lens barrel mounting table for mounting a lens barrel of the cassette lens; and a bottom shell mounting table is further arranged at the bottom of the middle block and used for mounting a bottom shell of the card type lens.
Preferably, the substrate mounting table, the lens barrel mounting table and the bottom shell mounting table are respectively provided with at least three bolt holes which are uniformly distributed.
Preferably, the substrate mounting table, the lens barrel mounting table and the bottom shell mounting table are respectively matched with the optical substrate, the lens barrel and the bottom shell of the card type lens in a cylindrical manner, so as to guarantee the assembly precision.
Preferably, the intermediate block is made of high-strength aluminum alloy, invar steel or titanium alloy.
Preferably, the azimuth axis turntable comprises a turntable body, the bottom of the turntable body is provided with a lip edge, and the top of the turntable body is provided with an azimuth axis driving part.
Preferably, the pitch axis driving part and the azimuth axis driving part both use a torque motor or a servo motor as a driving device.
Preferably, the yoke is made of aluminum alloy.
Preferably, a wiring groove is formed in the arm body and used for wiring a power line and a signal line of a control system of the pitch axis driving part and the card type lens.
A second aspect of the present application provides a card-type lens system comprising the two-dimensional turret described in any one of the above.
The application provides a two-dimensional revolving stage and card formula camera lens system, compares with prior art, and this application has following advantage:
the two-dimensional rotary table comprises a middle block, a fork arm and an azimuth axis rotary table; and the middle piece is hollow cylindricality, and the middle part of middle piece is provided with every single move axle connecting portion, therefore the middle piece orthographic projection of this application is "one" font, and the internal diameter of middle piece matches with the optical substrate of card formula camera lens for the compact and the light in weight of middle piece. Because the intermediate block is arranged between the arm bodies, the volume of the fork arm is compact and the weight is light, so that the two-dimensional rotary table has the characteristics of small volume and light weight.
Further, a substrate mounting table for fixing an optical substrate in the cassette lens is provided inside the bottom of the intermediate block. Therefore, the middle block is provided with the substrate mounting table on the inner side of the bottom of the middle block, so that the gravity center of the card type lens can be reduced, and the stability of the card type lens is greatly improved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a two-dimensional turret of the prior art;
FIG. 2 is a schematic structural diagram of a two-dimensional turret of the present application;
fig. 3 is a schematic structural diagram of an intermediate block of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
In a first aspect of the present application, a two-dimensional turntable is provided, and the specific structure of the two-dimensional turntable can refer to the schematic diagrams shown in fig. 2 and 3, the two-dimensional turntable includes an intermediate block 10, a yoke 20, and an azimuth axis turntable 30; the middle block 10 is a hollow cylinder, a pitch axis connecting part 101 is arranged in the middle of the middle block 10, a substrate mounting table 102 is arranged on the inner side of the bottom of the middle block 10, and the substrate mounting table 102 is used for fixing an optical substrate in a cassette lens. The orthographic projection of the middle block 10 of the two-dimensional turntable is in a straight shape, and the inner diameter of the middle block 10 is matched with the optical substrate of the card type lens, so that the width of the middle block 10 is only slightly larger than the diameter of the optical substrate of the card type lens. It should be noted that the card lens generally includes a card optical system, a subsequent optical system and a subsequent substrate, the card optical system is disposed on the upper surface of the optical substrate, and the subsequent optical system is disposed on the lower surface of the optical substrate, so that the optical substrate is an important component for assembling components of the card lens. And the width of the pitch axis turntable in the prior art is the diameter of the thick-walled clamped lens in the shape of a 'U', so that compared with the pitch axis turntable in the prior art, the intermediate block 10 in the present application has a more compact volume and a lighter weight.
The yoke 20 comprises an arm body 201, and a pitch axis driving part 202 is arranged at the upper part of the arm body 201; the intermediate block 10 is arranged between the arm bodies 201, and the intermediate block 10 is more compact in volume and light in weight, so that the width of the arm body 201 is only slightly larger than that of the intermediate block 10, and compared with the prior art, the arm body 201 is more compact in volume and light in weight, and the two-dimensional turntable has the characteristics of small volume and light weight.
The pitch axis connecting portion 101 is connected to the pitch axis driving portion 202, the pitch axis driving portion 202 is configured to control a pitch angle of the intermediate block 10, the yoke 20 is disposed on the azimuth axis turntable 30, and the azimuth axis turntable 30 is configured to control a rotation angle of the yoke 20. Further, since the components are mounted on both the upper and lower surfaces of the optical substrate of the card lens, since the optical lens and the lens barrel are mainly mounted on the upper surface of the optical substrate, the center of gravity of the card lens is located above the upper surface of the optical substrate, and the lower the center of gravity of the optical substrate is, the more firmly the fixation is, the lower the center of gravity of the card lens is, and the more the stability of the card lens is greatly improved. Therefore, for the stability of the azimuth rotation and the pitch rotation of the card type lens, the substrate mounting table 102 is arranged on the inner side of the bottom of the middle block 10, the substrate mounting table 102 is used for fixing the optical substrate in the card type lens, so that the optical substrate is firmly fixed on the substrate mounting table 102 by adopting fixing modes such as bolts, riveting, welding and the like, and in addition, the substrate mounting table 102 is positioned on the bottom of the middle block 10, so that after the optical substrate is assembled, the gravity center of the card type lens can be basically positioned at the axial position of the pitch shaft driving part 202, and the card type lens has the azimuth rotation and the pitch shaft rotation with high stability.
In order to protect the components and parts of the card type lens, the upper surface of the optical substrate is further provided with a lens barrel, the lower surface of the optical substrate is further provided with a bottom shell, the diameter of the middle block 10 is reduced, the top of the middle block 10 is further provided with a lens barrel mounting table 103 for mounting the lens barrel of the card type lens, the bottom of the middle block 10 is further provided with a bottom shell mounting table 104 for mounting the bottom shell of the card type lens, and therefore the diameter of the middle block 10 is almost the same as the diameters of the lens barrel and the bottom shell. In addition, the lens barrel mounting base 103 and the bottom case mounting base 104 may be formed by lips at upper and lower edges of the intermediate block 10, and the lens barrel and the bottom case are fixed by fixing means such as bolts and rivets.
In order to enable the card-type lens to have high-stability azimuth rotation and pitch axis rotation, three bolt holes which are uniformly distributed are at least arranged on the substrate mounting table 102, the lens barrel mounting table 103 and the bottom shell mounting table 104. In order to ensure the assembly accuracy and good sealing performance, the substrate mounting table 102, the lens barrel mounting table 103 and the bottom case mounting table 104 of the present application are respectively in cylindrical fit with the optical substrate, the lens barrel and the bottom case of the card lens.
The two-dimensional turntable is nonstandard precision equipment, the structural design and the material performance of the two-dimensional turntable have great influence on electrical control and communication, and the two-dimensional turntable also needs to have high enough stability on the premise of generally requiring light weight, high strength and high rigidity. Therefore, the intermediate block 10 and the yoke 20 of the present application can be made of high strength aluminum alloy, invar steel or titanium alloy, which has high strength and rigidity, preferably aluminum alloy, which has light weight, high strength, low price, corrosion resistance, and abundant and easily available raw materials. In addition, this application azimuth axis revolving stage 30 includes revolving stage body 301, revolving stage body 301's bottom is provided with lip limit 302, revolving stage body 301 top is provided with azimuth axis drive part 303, and revolving stage body 301 is the bowl form, and the bottom is provided with outside extension lip limit 302, consequently multiplicable two-dimensional revolving stage's stability.
In addition, the two-dimensional turntable needs to have high enough alignment precision, so that the machining precision of the shaft system needs to be high, the assembly process needs to be reasonable, the frame stability needs to be good, and each shaft system needs to have high enough position precision and rotation precision. In order to ensure that the two-dimensional rotary table has sufficiently high position precision and rotation precision, the pitch axis driving part 202 and the azimuth axis driving part 303 both adopt a torque motor or a servo motor as a driving device, and the torque motor or the servo motor has the advantages of high corresponding speed, good linearity, small vibration and the like.
A wiring groove is arranged in the arm body 201 and used for wiring a pitch axis driving part 202 and a power line and a signal line of a control system of the card type lens.
A second aspect of the present application provides a card-type lens system including the two-dimensional turret described in any one of the above.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (10)
1. A two-dimensional turret characterized by: comprises an intermediate block (10), a fork arm (20) and an azimuth axis turntable (30);
the middle block (10) is in a hollow cylindrical shape, a pitching shaft connecting part (101) is arranged in the middle of the middle block (10), a substrate mounting table (102) is arranged on the inner side of the bottom of the middle block (10), the substrate mounting table (102) is used for fixing an optical substrate in a cassette lens, the yoke (20) comprises an arm body (201), and a pitching shaft driving part (202) is arranged on the upper part of the arm body (201);
the middle block (10) is arranged between the arm bodies (201), the pitching shaft connecting portion (101) is connected with the pitching shaft driving portion (202), the pitching shaft driving portion (202) is used for controlling the pitching angle of the middle block (10), the fork arm (20) is arranged on the azimuth shaft rotary table (30), and the azimuth shaft rotary table (30) is used for controlling the rotating angle of the fork arm (20).
2. The two-dimensional turret of claim 1, wherein: the top of the middle block (10) is also provided with a lens barrel mounting table (103) for mounting a lens barrel of a cassette lens; and a bottom shell mounting table (104) is further arranged at the bottom of the middle block (10) and is used for mounting a bottom shell of the card type lens.
3. The two-dimensional turret of claim 2, wherein: the base plate mounting table (102), the lens barrel mounting table (103) and the bottom shell mounting table (104) are at least provided with three bolt holes which are uniformly distributed.
4. The two-dimensional turret of claim 3, wherein: the substrate mounting table (102), the lens barrel mounting table (103) and the bottom shell mounting table (104) are respectively matched with an optical substrate, a lens barrel and a bottom shell of the card type lens in a cylindrical mode and used for guaranteeing assembling accuracy.
5. The two-dimensional turret according to any of claims 1-4, wherein: the intermediate block (10) is made of high-strength aluminum alloy, invar steel or titanium alloy.
6. The two-dimensional turret of claim 1, wherein: the azimuth axis turntable (30) comprises a turntable body (301), the lip edge (302) is arranged at the bottom of the turntable body (301), and an azimuth axis driving part (303) is arranged at the top of the turntable body (301).
7. The two-dimensional turret according to claim 6, wherein: the pitch axis driving part (202) and the azimuth axis driving part (303) both adopt a torque motor or a servo motor as a driving device.
8. The two-dimensional turret of claim 1, wherein: the fork arm (20) is made of aluminum alloy.
9. The two-dimensional turret of claim 8, wherein: a wiring groove is formed in the arm body (201) and used for wiring a pitching shaft driving part (202) and a power line and a signal line of a control system of the card type lens.
10. A card-type lens system comprising the two-dimensional turret of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021620932.3U CN213042051U (en) | 2020-08-07 | 2020-08-07 | Two-dimensional rotary table and card type lens system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021620932.3U CN213042051U (en) | 2020-08-07 | 2020-08-07 | Two-dimensional rotary table and card type lens system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213042051U true CN213042051U (en) | 2021-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021620932.3U Active CN213042051U (en) | 2020-08-07 | 2020-08-07 | Two-dimensional rotary table and card type lens system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213042051U (en) |
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2020
- 2020-08-07 CN CN202021620932.3U patent/CN213042051U/en active Active
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Effective date of registration: 20220729 Granted publication date: 20210423 |
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