L-shaped photoelectric two-dimensional turntable

Abstract

An L-shaped photoelectric two-dimensional turntable, comprising a first rotating arm arranged along an azimuth axis and a second rotating arm arranged along a pitch axis, the pitch axis being perpendicular to the azimuth axis; a first reflector is arranged at an upper portion inside the first rotating arm, and a hollow azimuth rotating motor for driving the first rotating arm to rotate around the azimuth axis is arranged at a lower portion of the first rotating arm; the second rotating arm comprises an outer sleeve, one end of the outer sleeve being connected with the upper portion of the first rotating arm, and the other end being provided with a rotating motor; an inner sleeve is rotatably arranged in the outer sleeve, and a second reflector parallel to the first reflector is arranged in the inner sleeve; the rotating motor is used for driving the inner sleeve to rotate around the pitch axis. The utility model moves the motor outside for driving the second reflector, so that the motor itself does not need to pass through the light path, thus hollow pitch rotating motors are not needed any more, and small-size rotating motors with more economic advantages can be used as the pitch axis motor, so that the cost of the L-shaped photoelectric two-dimensional turntable can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of tracking turntable technology for photoelectric imaging or laser emission, specifically to an L-shaped photoelectric two-dimensional turntable. Background Technology

[0002] Optoelectronic 2D turntables can be used for optoelectronic imaging or to directionally emit laser beams into space for target tracking and illumination, thereby performing a range of functions such as communication and illumination. For the same optoelectronic 2D turntable, while emitting the beam, the reversible optical path also enables beam reception and target image acquisition. Such devices often employ a dual-axis design with azimuth and pitch motors, respectively driving the turntable to move around the azimuth and pitch axes, thus allowing the beam to be directed in a specific direction in space.

[0003] The existing structure of the L-shaped photoelectric two-dimensional turntable based on the astrophotometer is as follows: Figure 1 As shown, a hollow azimuth rotary motor 101 drives the turntable to move around the azimuth axis, and a hollow pitch rotary motor 102 drives the turntable to move around the pitch axis. The light beam passes through the interior of the hollow azimuth rotary motor 101 and is transmitted to the first reflector 103, then through the interior of the hollow pitch rotary motor 102 and is transmitted to the second reflector 104, finally being directed in the designated direction. The disadvantage of this photoelectric two-dimensional turntable is that as the beam size increases, the cost of the large hollow motor and its associated encoder, turntable bearings, and other equipment becomes expensive, resulting in a high cost for the photoelectric two-dimensional turntable. Summary of the Invention

[0004] One of the objectives of this utility model is to provide an L-shaped photoelectric two-dimensional turntable to solve the technical problem of high cost associated with existing L-shaped photoelectric two-dimensional turntables that use two sets of large hollow motors and their matching encoders and turntable bearings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An L-shaped photoelectric two-dimensional turntable includes a first rotating arm arranged along an azimuth axis and a second rotating arm arranged along a pitch axis, the pitch axis being perpendicular to the azimuth axis; a first reflector is provided in the upper part of the first rotating arm, the first reflector forming an angle of 45° with both the azimuth axis and the rotation axis; a hollow azimuth rotation motor is provided in the lower part of the first rotating arm for driving the first rotating arm to rotate around the azimuth axis; the second rotating arm includes an outer sleeve, one end of which is connected to the upper part of the first rotating arm, and the other end of which is equipped with a rotation motor; an inner sleeve is rotatably installed inside the outer sleeve, and a second reflector parallel to the first reflector is installed inside the inner sleeve; the motor shaft of the rotation motor is connected to the inner sleeve for driving the inner sleeve to rotate around the pitch axis.

[0007] The above solution moves the motor driving the second reflector externally, eliminating the need for the optical path to pass through the motor itself. Therefore, it eliminates the need for the hollow pitch rotary motor found in existing L-shaped photoelectric 2D turntables, allowing for the use of a more economical, smaller rotary motor as the pitch axis motor. As the light transmission area increases, the cost of the L-shaped photoelectric 2D turntable is expected to decrease significantly. Furthermore, the cost of the encoder and turntable bearings used with the smaller rotary motor is also reduced, further lowering the overall manufacturing cost of the L-shaped photoelectric 2D turntable.

[0008] In some embodiments, the first reflector and the second reflector are both mounted on a mirror frame, the mirror frame is installed inside an inner sleeve, and the mirror frame is provided with an angle adjustment mechanism.

[0009] The angle adjustment mechanism includes a base and a mirror mount, both of which have holes at their centers;

[0010] The mirror mount is disc-shaped and includes an upper mirror mount and a lower mirror mount. The bottom of the lower mirror mount is connected to the top of the base via two first connectors, forming a gap between the bottom of the lower mirror mount and the top of the base. The top of the lower mirror mount is connected to the bottom of the upper mirror mount via two second connectors, forming a gap between the top of the lower mirror mount and the bottom of the upper mirror mount. The top of the upper mirror mount is used to mount a reflector.

[0011] The two first connectors are located on both sides of the through hole and are both located on the first central axis. The two second connectors are located on both sides of the through hole and are both located on the second central axis. The first central axis and the second central axis both pass through the center point of the mirror base. The first central axis and the second central axis are perpendicular to each other.

[0012] A first threaded hole is provided on the base at the position corresponding to the first connector, and a first adjusting bolt is provided in the first threaded hole. The first adjusting bolt abuts against the bottom of the upper lens mount. A second threaded hole is provided on the base at the position corresponding to the second connector, and a second adjusting bolt is provided in the second threaded hole. The second adjusting bolt abuts against the bottom of the lower lens mount.

[0013] The aforementioned angle adjustment mechanism adjusts the angle of the reflector by varying the depth to which the adjusting bolt is screwed into the threaded hole, thus differentiating the gaps on both sides of the central axis. The mirror base can be made of materials such as aluminum or stainless steel, which are shaped to some extent by external forces. This angle adjustment mechanism has the following advantages: 1. It allows for angle adjustment in two orthogonal directions of the reflector; 2. When adjusting the reflector angle, the reflector rotates around its central axis, ensuring that the position of the reflector's center point remains constant regardless of the angle adjustment, thus preventing significant deviation of the reflected beam due to changes in the reflector angle; 3. Existing technology uses an adjusting bolt at one end of the reflector to adjust its angle, but lacks a limiting mechanism at the other end, leading to slight vibrations that affect beam quality. This invention uses adjusting bolts at opposite ends of the reflector to lock it in place, ensuring stability; 4. Compared to solutions where a pair of adjusting bolts are placed on the same side of the rotation axis, this invention, by placing a pair of adjusting bolts on opposite sides of the rotation axis, results in a smaller overall size for the angle adjustment mechanism.

[0014] In some embodiments, the gap between the bottom of the lower lens mount and the top of the base gradually increases from the first central axis towards both sides, and the gap between the top of the lower lens mount and the bottom of the upper lens mount gradually increases from the second central axis towards both sides. More preferably, the top of the base is flat, and the bottom of the lower lens mount is low in the middle and high on both sides. Compared to equidistant gaps, this wedge-shaped gap allows for a wider range of angle adjustment and a lighter lens mount.

[0015] To prevent misalignment of the adjusting bolts, in some embodiments, arc-shaped positioning grooves are provided at the bottom of the upper lens mount corresponding to the position of the first adjusting bolt, and at the bottom of the lower lens mount corresponding to the position of the second adjusting bolt; the ends of the first adjusting bolt and the second adjusting bolt are both arc-shaped.

[0016] In some embodiments, the frame is a triangular prism, including a first side, a second side, and a third side, all three sides having openings; wherein the first side is perpendicular to the second side, the angle adjustment mechanism is mounted on the third side, and the reflecting surface of the mirror faces the inside of the frame.

[0017] To prevent the reflector from being crushed during installation, in some embodiments, the reflector is mounted on top of the upper mirror mount by a pressure ring, and gaskets are provided between the pressure ring and the reflector, and between the reflector and the upper mirror mount.

[0018] To prevent pitch axis deviation, in some embodiments, the inner sidewall of the outer sleeve is provided with a guide protrusion along the circumferential direction, and the outer sidewall of the inner sleeve is provided with a guide groove along the circumferential direction, with the guide protrusion embedded in the guide groove.

[0019] In some embodiments, a first through hole is provided on the side wall of the inner sleeve for the light beam reflected by the second reflector to pass through; a second through hole is provided on the side wall of the outer sleeve at a position corresponding to the first through hole along the circumference of the connecting post.

[0020] In some embodiments, the second through-hole extends from -95° to 95° when viewed from the axial direction of the outer sleeve.

[0021] In some embodiments, both the orientation rotary motor and the rotary motor are equipped with encoders.

[0022] This utility model has at least the following technical effects or advantages:

[0023] 1. By moving the motor used to drive the second reflector outward, the motor itself does not need to pass through the optical path. Therefore, it is no longer necessary to use the hollow pitch rotary motor in the existing L-shaped photoelectric two-dimensional turntable. Instead, a smaller rotary motor with more economic advantages can be used as the pitch axis motor. As the light transmission size increases, the manufacturing cost of the L-shaped photoelectric two-dimensional turntable is expected to be greatly reduced.

[0024] 2. The encoders used with miniaturized rotary motors are also cheaper, further reducing the manufacturing cost of L-shaped photoelectric two-dimensional turntables.

[0025] 3. The angle adjustment mechanism in this utility model can not only adjust the angle of the reflector in two orthogonal directions in two dimensions, but also ensure that the reflected beam will not be significantly deflected due to the change of the reflector angle.

[0026] 4. By setting an adjusting bolt at each end, the reflector can be locked to ensure its stability, and the size is smaller than that of the existing angle adjustment mechanism. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an existing optoelectronic two-dimensional turntable;

[0028] Figure 2 This is a schematic diagram of the structure of an L-shaped photoelectric two-dimensional turntable in one embodiment of the present invention;

[0029] Figure 3 for Figure 2 Top view;

[0030] Figure 4 for Figure 3 AA section view;

[0031] Figure 5 This is a schematic diagram of the path of the light beam inside the L-shaped photoelectric two-dimensional turntable in one embodiment of the present invention (the frame and angle adjustment mechanism are hidden).

[0032] Figure 6 for Figure 3 AA cross-sectional view (another perspective, the rotary motor is hidden);

[0033] Figure 7 This is a schematic diagram of the inner sleeve in one embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the mirror mount in one embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram showing the connection between the mirror base and the angle adjustment mechanism in one embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram showing the connection between the angle adjustment mechanism and the pressure plate in one embodiment of the utility model;

[0037] Figure 11 for Figure 10 An explosion diagram;

[0038] Figure 12 for Figure 10 Top view;

[0039] Figure 13 for Figure 10 A bottom view;

[0040] Figure 14 This is a schematic diagram of the angle adjustment mechanism in one embodiment of the utility model;

[0041] Figure 15 for Figure 14 The front view;

[0042] Figure 16 for Figure 14 Side view;

[0043] Figure 17 This is a cross-sectional view of the angle adjustment mechanism in one embodiment of the utility model. Detailed Implementation

[0044] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0045] like Figures 2-6The diagram shows an L-shaped photoelectric two-dimensional turntable, comprising a first rotating arm 2 arranged along the azimuth axis and a second rotating arm arranged along the pitch axis, wherein the pitch axis is perpendicular to the azimuth axis.

[0046] The upper part of the interior of the first rotating arm 2 is equipped with a first reflector 201, and the angle between the first reflector 201 and the azimuth axis and the pitch axis is 45°. The lower part of the first rotating arm 2 is equipped with a hollow azimuth rotary motor 202 for driving the first rotating arm 2 to rotate around the azimuth axis. It should be noted that this utility model only improves the structure on the pitch axis, while retaining the structure on the azimuth axis of the existing photoelectric two-dimensional turntable, that is, using a hollow azimuth rotary motor 202 to drive the first rotating arm 2 to rotate. The main structure of the hollow azimuth rotary motor includes a stator, a rotor, and bearings, and its rotation range is 360°. Since the hollow azimuth rotary motor is existing technology, its principle and specific structure will not be described in detail, and the attached drawings are only schematic diagrams. The specific structure of the hollow azimuth rotary motor and its matching encoder are not shown in the figures.

[0047] The second rotating arm includes an outer sleeve 301, one end of which is connected to the upper part of the first rotating arm 2, and the other end is equipped with a rotary motor 303. An inner sleeve 302 is rotatably mounted inside the outer sleeve 301, and a second reflector 304 parallel to the first reflector 201 is mounted inside the inner sleeve 302. The motor shaft of the rotary motor 303 is connected to the inner sleeve 302 and is used to drive the inner sleeve 302 to rotate around the pitch axis. The rotary motor 303 can be a permanent magnet DC torque motor, DC torque motor, or similar type. In this embodiment, the rotary motor 303 is an IDS60-P02A model. The rotary motor 303 is installed inside a housing, which is fixedly connected to the outer sleeve 301 by bolts. The outer diameter of the inner sleeve 302 is the same as the inner diameter of the outer sleeve 301, so that the inner sleeve 302 can fit perfectly inside the outer sleeve 301 and rotate around the pitch axis within the outer sleeve 301.

[0048] As a preferred embodiment, both the first reflector 201 and the second reflector 304 are mounted on the mirror frame 4, which is installed inside the inner sleeve 302. The mirror frame 4 is equipped with an angle adjustment mechanism 5.

[0049] like Figure 8 and Figure 9 As shown, the frame 4 is shaped like a triangular prism, including a first side, a second side, and a third side 401, all of which have openings. The first side is perpendicular to the second side, and the angle adjustment mechanism 5 is mounted on the third side 401 via a pressure plate 8.

[0050] like Figures 10-17As shown, the angle adjustment mechanism 5 includes a base 501 and a mirror mount, both with openings at their centers. The mirror mount is disc-shaped and includes an upper mirror mount 502 and a lower mirror mount 503. The bottom of the lower mirror mount 503 is connected to the top of the base 501 via two first connectors 601, creating a gap between the bottom of the lower mirror mount 503 and the top of the base 501. The top of the lower mirror mount 503 is connected to the bottom of the upper mirror mount 502 via two second connectors 602, creating a gap between the top of the lower mirror mount 503 and the bottom of the upper mirror mount 502. The reflectors (first reflector 201, second reflector 304) are press-fitted onto the top of the upper mirror mount 502 via pressure rings 9, with their reflective surfaces facing the inner side of the mirror frame 4. More preferably, gaskets are provided between the reflectors and between the reflectors and the upper mirror mount 502 via the pressure rings 9.

[0051] Two first connectors 601 are located on both sides of the through hole and on the first central axis, and two second connectors 602 are located on both sides of the through hole and on the second central axis. The first and second central axes both pass through the center point of the mirror base. The first and second central axes are perpendicular to each other. That is, the line connecting the two first connectors 601 and the line connecting the two second connectors 602 intersect in a cross shape, and the intersection point is the center point of the mirror base, which is also the center point of the reflector.

[0052] A first threaded hole is provided on the base 501 at a position corresponding to the first connecting member 601, and a first adjusting bolt 701 is provided in the first threaded hole, abutting against the bottom of the upper lens mount 502. A second threaded hole is provided on the base 501 at a position corresponding to the second connecting member 602, and a second adjusting bolt 702 is provided in the second threaded hole, abutting against the bottom of the lower lens mount 503. Furthermore, in order to allow the first adjusting bolt 701 to abut against the bottom of the upper lens mount 502, a clearance notch is provided on the lower lens mount 503 at a position corresponding to the first adjusting bolt 701.

[0053] The gaps between the bottom of the lower lens mount 503 and the top of the base 501, and between the top of the lower lens mount 503 and the bottom of the upper lens mount 502, can be equidistant. As a preferred embodiment, the gap between the bottom of the lower lens mount 503 and the top of the base 501 gradually increases from the first central axis towards both sides, and the gap between the top of the lower lens mount 503 and the bottom of the upper lens mount 502 gradually increases from the second central axis towards both sides, such as... Figures 15-17 As shown. More preferably, the top of the base 501 is flat, and the bottom of the lower lens mount 503 is low in the middle and high on both sides. The top of the lower lens mount 503 is flat, and the bottom of the upper lens mount 502 is low in the middle and high on both sides.

[0054] As a preferred embodiment, the bottom of the upper lens mount 502, corresponding to the position of the first adjusting bolt 701, and the bottom of the lower lens mount 503, corresponding to the position of the second adjusting bolt 702, are both provided with arc-shaped positioning grooves. The ends of both the first adjusting bolt 701 and the second adjusting bolt 702 are arc-shaped, such as... Figure 17 As shown.

[0055] like Figure 12 As shown, the angle of the first reflector 201 is adjusted using the angle adjustment mechanism 5 to deflect it to the left (in Figure 12 Taking the second adjustment bolt on the left side of the second central axis 12 as an example, first loosen the second adjustment bolt to release the space between the second adjustment bolt and the bottom of the lower lens mount 503. Then tighten the second adjustment bolt on the right side of the second central axis 12 to lift the right side of the lower lens mount 503 to the required position. Since the upper lens mount 502 and the lower lens mount 503 are integrated, and the first reflector 201 is mounted on the upper lens mount 502, the right side of the first reflector 201 is raised (perpendicular to the screen direction outwards), and the left side is lowered (perpendicular to the screen direction inwards), that is, it is deflected to the left. Finally, tighten the second adjustment bolt on the left side of the second central axis 12 until it abuts against the bottom of the lower lens mount 503 to lock the first reflector 201.

[0056] As a preferred embodiment, a first through hole 41 is formed on the side wall of the inner sleeve 302. The first through hole 41 is located on the propagation path of the light beam 10, allowing the light beam 10, after being reflected by the second reflector 304, to pass through. A second through hole 42 is formed on the side wall of the outer sleeve 301 at a position corresponding to the first through hole 41, along the circumference of the outer sleeve 301. Viewed axially from the outer sleeve 301, the second through hole 42 extends from -95° to 95°, meaning the pitch axis rotation range extends from -95° to 95°. Figure 2 and Figure 3 As shown. Preferably, the first through hole 41 is covered by a dust cover made of transparent material to prevent dust from entering the inner sleeve 302 through the first through hole 41.

[0057] As a preferred option, such as Figures 4-7 As shown, the inner side wall of the outer sleeve 301 is provided with a guide protrusion along the circumferential direction, and the outer side wall of the inner sleeve 302 is provided with a guide groove 3031 along the circumferential direction, with the guide protrusion embedded in the guide groove 3031.

[0058] As a preferred embodiment, both the azimuth rotary motor 202 and the rotary motor 303 are equipped with encoders (not shown in the figure) to determine the rotation angles of the azimuth and pitch axes, respectively. Due to its special construction, the azimuth rotary motor can only use expensive encoders, such as the RESA30USA150B grating encoder. Ordinary rotary motors, on the other hand, can use inexpensive encoders, such as the K22-J2N1000B6, thereby further reducing the manufacturing cost of the L-shaped photoelectric two-dimensional turntable.

[0059] In this invention, the light source can be a laser. The laser beam 10 emitted by the laser (not shown in the figure) is reflected by the first reflector 201 and the second reflector 304 and then exits through the first through hole 41 and the second through hole 42.

[0060] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0061] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, the inventive aspect lies in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0062] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments.

[0063] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0066] Although the present invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the present invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and edibility purposes, and not for interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. Regarding the scope of the invention, the disclosure made is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

[0067] Finally, it should be noted that this utility model does not explain in detail the common knowledge recognized by those skilled in the art. The above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An L-shaped photoelectric two-dimensional turntable, comprising a first rotating arm arranged along an azimuth axis and a second rotating arm arranged along a pitch axis, wherein the pitch axis is perpendicular to the azimuth axis; a first reflecting mirror is provided in the upper part of the interior of the first rotating arm, the first reflecting mirror being at an angle of 45° to both the azimuth axis and the rotation axis; a hollow azimuth rotation motor is provided in the lower part of the first rotating arm for driving the first rotating arm to rotate around the azimuth axis; characterized in that: The second rotating arm includes an outer sleeve, one end of which is connected to the upper part of the first rotating arm, and a rotary motor is installed at the other end; an inner sleeve is rotatably installed inside the outer sleeve, and a second reflector parallel to the first reflector is installed inside the inner sleeve; the motor shaft of the rotary motor is connected to the inner sleeve and is used to drive the inner sleeve to rotate around the pitch axis.

2. The L-shaped photoelectric two-dimensional turntable according to claim 1, characterized in that: Both the first and second reflectors are mounted on a mirror frame, which is installed inside an inner sleeve. The mirror frame is equipped with an angle adjustment mechanism. The angle adjustment mechanism includes a base and a mirror mount, both of which have holes at their centers; The lens mount is disc-shaped and includes an upper lens mount and a lower lens mount; the bottom of the lower lens mount is connected to the top of the base through two first connectors to form a gap between the bottom of the lower lens mount and the top of the base. The top of the lower lens mount is connected to the bottom of the upper lens mount via two second connectors, so that a gap is formed between the top of the lower lens mount and the bottom of the upper lens mount; the top of the upper lens mount is used to mount a reflector. The two first connectors are located on both sides of the through hole and are both located on the first central axis. The two second connectors are located on both sides of the through hole and are both located on the second central axis. The first central axis and the second central axis both pass through the center point of the mirror base. The first central axis and the second central axis are perpendicular to each other. A first threaded hole is provided on the base at the position corresponding to the first connector, and a first adjusting bolt is provided in the first threaded hole. The first adjusting bolt abuts against the bottom of the upper lens mount. A second threaded hole is provided on the base at the position corresponding to the second connector, and a second adjusting bolt is provided in the second threaded hole. The second adjusting bolt abuts against the bottom of the lower lens mount.

3. The L-shaped photoelectric two-dimensional turntable according to claim 2, characterized in that: The gap between the bottom of the lower lens mount and the top of the base gradually increases from the first central axis to both sides, and the gap between the top of the lower lens mount and the bottom of the upper lens mount gradually increases from the second central axis to both sides.

4. The L-shaped photoelectric two-dimensional turntable according to claim 2 or 3, characterized in that: The bottom of the upper lens mount, corresponding to the position of the first adjusting bolt, and the bottom of the lower lens mount, corresponding to the position of the second adjusting bolt, are both provided with arc-shaped positioning grooves; the ends of the first adjusting bolt and the second adjusting bolt are both arc-shaped.

5. The L-shaped photoelectric two-dimensional turntable according to claim 2 or 3, characterized in that: The frame is a triangular prism, including a first side, a second side, and a third side, all three sides having openings; the first side is perpendicular to the second side, the angle adjustment mechanism is mounted on the third side, and the reflective surface of the mirror faces the inside of the frame.

6. The L-shaped photoelectric two-dimensional turntable according to claim 2 or 3, characterized in that: The reflector is mounted on top of the upper mirror mount via a pressure ring, and gaskets are provided between the pressure ring and the reflector, and between the reflector and the upper mirror mount.

7. The L-shaped photoelectric two-dimensional turntable according to any one of claims 1-3, characterized in that: The inner side wall of the outer sleeve is provided with a guide protrusion along the circumferential direction, and the outer side wall of the inner sleeve is provided with a guide groove along the circumferential direction, with the guide protrusion embedded in the guide groove.

8. The L-shaped photoelectric two-dimensional turntable according to claim 7, characterized in that: The inner sleeve has a first through hole on its side wall, which is used to allow the light beam reflected by the second reflector to pass through; the outer sleeve has a second through hole on its side wall at the position corresponding to the first through hole along the circumference of the connecting column.

9. The L-shaped photoelectric two-dimensional turntable according to claim 8, characterized in that: Viewed from the axial direction of the outer sleeve, the second through hole extends from -95° to 95°.

10. The L-shaped photoelectric two-dimensional turntable according to any one of claims 1-3, characterized in that: Both the azimuth rotary motor and the rotary motor are equipped with encoders.

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