A visual monitoring mechanism for monitoring seed crystals

Abstract

The utility model relates to crystal growth monitoring equipment technical field, concretely relates to a visual monitoring mechanism of monitoring seed crystal, aims at solving the problem that the biphase camera cross irradiation of seed crystal monitoring scheme is easy to interfere with each other and cannot clearly observe the seed crystal melting state, size change. Its technical scheme main points are: including camera assembly for shooting record seed crystal change, including camera adjusting structure and the camera body of setting on camera adjusting structure, lens assembly including lens body, the lens adjusting structure is opposite fixed on the lens fixed bottom plate, the lens fixed bottom plate is opened with light straight -shooting mouth, the light ray of seed crystal light emission under light irradiation changes the propagation direction and forms the reflected light ray after the linear shooting to lens body, the camera body receives the reflected light ray after the turning of lens body, utilizes the reflected light path of lens body, avoids the light ray interference of camera piece, can adjust the reflection angle, clearly captures the melting boundary, size change details of seed crystal.

Description

Technical Field

[0001] This utility model relates to the field of crystal growth monitoring equipment, and in particular to a visual monitoring mechanism for monitoring seed crystals. Background Technology

[0002] In the crystal growth process of sapphire materials, in order to ensure the quality of crystal growth and obtain sapphire crystals with good purity, integrity and mechanical properties, it is necessary to operate the temperature control and seed crystal positioning based on indicators such as the melting state and size change of the seed crystal in the sapphire crystal growth furnace. Therefore, it is necessary to monitor the melting state and size change of the seed crystal to control the stability of the growth process.

[0003] Currently, the industry primarily uses a dual-camera cross-irradiation method to monitor the state of seed crystals inside crystal growth furnaces, such as... Figure 7 As shown, two cameras simultaneously capture images of the seed crystal inside the furnace from different angles, enabling comprehensive monitoring of the seed crystal's state. However, this monitoring scheme has certain drawbacks in practical applications. First, the fields of view of the two cameras overlap, easily causing mutual interference when light shines on them, leading to problems such as halos and ghosting in the images. Second, the high-temperature environment inside the crystal growth furnace generates weak thermal radiation interference. The combined effect of the cross-path of the two cameras results in the loss of details such as the melting boundary and dimensional changes of the seed crystal, making it impossible to form a clear and accurate image. The shortcomings of the dual-camera cross-illumination monitoring scheme make it difficult for operators to accurately judge the real-time melting progress and dimensional fluctuations of the seed crystal, thus hindering timely adjustments to process parameters, increasing the scrap rate during crystal growth, and reducing production efficiency.

[0004] Therefore, a new technical solution is proposed to solve the problems existing in the current technology. Utility Model Content

[0005] The purpose of this invention is to provide a visual monitoring mechanism for seed crystals, so as to solve the problem that the dual-camera cross-irradiation in the existing seed crystal monitoring scheme is prone to mutual interference and cannot clearly observe the melting state and size changes of the seed crystals.

[0006] The technical solution of this utility model is: a visual monitoring mechanism for monitoring seed crystals, comprising: A camera assembly for capturing and recording changes in the seed crystal, including a camera adjustment structure and a camera body mounted on the camera adjustment structure; The lens assembly includes at least one lens body. When the camera body takes a picture, the lens assembly is fixed to a lens fixing base plate. The lens fixing base plate has a direct light outlet. When the seed crystal is illuminated, the light emitted travels in a straight line to the lens body and then changes its direction of propagation to form reflected light. The camera body receives the reflected light after it has been deflected by the lens body.

[0007] Preferably, the lens assembly further includes a lens adjustment structure, the lens body is disposed on the lens adjustment structure, the lens adjustment structure is relatively fixed to the lens fixing base plate, and the lens adjustment structure includes at least one set of lens distance adjustment structures and at least one lens clamping member.

[0008] Preferably, the lens distance adjustment mechanism includes a first adjustment member and a second adjustment member that are relatively fixed. The first adjustment member is detachably connected to the lens fixing base plate. After the first adjustment member is moved to the desired position, it is fixed relative to the lens fixing base plate.

[0009] Preferably, the first adjusting member has at least one first sliding groove, and the lens fixing base plate is detachably connected to at least one positioning member, which passes through the first sliding groove and is slidably connected to the first adjusting member.

[0010] Preferably, the second adjusting member is rotatably connected to the first adjusting member, the first adjusting member is fixedly connected with at least one limiting member and a rotating shaft for the second adjusting member to rotate, the second adjusting member has at least one rotating groove, the limiting member passes through the rotating groove to limit the rotation angle of the second adjusting member, and the second adjusting member is fixed relative to the first adjusting member after rotating to the required angle.

[0011] Preferably, the second adjusting member is slidably connected to the first adjusting member, the sliding directions of the first adjusting member and the second adjusting member are set at an angle, and the second adjusting member is fixed relative to the first adjusting member after sliding to the desired position.

[0012] Preferably, the lens clamping member is rotatably connected to the second adjusting member, the second adjusting member is fixedly connected to a lens rotation shaft, and the lens clamping member is fixed relative to the second adjusting member after being rotated to the required angle via the lens rotation shaft.

[0013] Preferably, the lens holder is slidably connected to the second adjusting member, the second adjusting member has a second sliding groove, and the lens holder slides along the second sliding groove to the desired position and is fixed relative to the second adjusting member.

[0014] Preferably, the camera assembly is fixedly connected to the camera mounting base plate, the camera adjustment structure includes a camera mounting component, a camera height adjustment mechanism and a camera angle adjustment mechanism, the end of the camera mounting base plate near the lens assembly is fixedly connected to the end of the lens mounting base plate away from the lens assembly, the camera body is fixedly connected to the camera mounting component, and the lens of the camera body is directly facing the reflected light path of the lens body.

[0015] Preferably, the camera height adjustment mechanism includes a support member and a height adjustment member, the height adjustment member being slidably connected to the support member. The camera angle adjustment mechanism includes an angle adjustment member and a camera rotation axis, the angle adjustment member being fixedly connected to a camera mounting base plate, the angle adjustment member having an arc-shaped groove, the angle adjustment member being rotatably connected to the support member, the support member being fixedly connected to a side rod passing through the arc-shaped groove, the end of the height adjustment member away from the support member being fixedly connected to the camera rotation axis, the camera mounting member being rotatably connected to the camera rotation axis, the support member being fixed relative to the angle adjustment member after rotating to the desired angle, and the camera mounting member being fixed relative to the camera rotation axis after rotating to the desired angle.

[0016] Compared with the prior art, the advantages of this utility model are: (1) By using the reflected light path of the lens body, a single camera replaces the traditional two-way cross-irradiation monitoring scheme, avoiding light interference from the camera components. The use of a front-coated lens can reduce light loss. The visual monitoring mechanism for monitoring seed crystals can adjust the reflection angle and clearly capture the melting boundary and size change details of the seed crystals. It also solves the problem of blurry imaging under high temperature conditions. The single camera reduces equipment investment and avoids the synchronous calibration operation of dual cameras, reducing the difficulty of equipment debugging and camera maintenance costs.

[0017] (2) The lens adjustment structure supports multi-dimensional adjustment of distance, angle and position, and can be adapted to the observation window position of different crystal growth furnaces. The camera adjustment structure includes height, horizontal angle and lens angle adjustment to ensure that the camera is aligned with the reflected light path. The lens assembly and the camera assembly are fixedly connected through the base plate. Installation and disassembly do not require modification of the furnace structure of the crystal growth furnace. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the visual monitoring mechanism for monitoring seed crystals as described in Example 1. Figure 1 ; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the visual monitoring mechanism for monitoring seed crystals as described in Example 1. Figure 2 ; Figure 4 This is a schematic diagram of the visual monitoring mechanism for monitoring seed crystals described in Example 2. Figure 1 ; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the visual monitoring mechanism for monitoring seed crystals described in Example 2. Figure 2 ; Figure 7 This is a schematic diagram of a visual monitoring mechanism that uses dual cameras for cross-illumination.

[0019] The components include: 1. Camera assembly; 11. Camera body; 12. Camera adjustment structure; 121. Camera mounting components; 122. Camera height adjustment mechanism; 1221. Support component; 1222. Height adjustment component; 123. Camera angle adjustment mechanism; 1231. Angle adjustment component; 301. Arc groove; 1232. Camera rotation axis; 2. Lens assembly; 21. Lens body; 22. Lens adjustment structure; 221. Lens distance adjustment structure; 2211. First adjusting component; 101. First slide groove; 102. Limiting component; 103. Rotating shaft; 104. First slide rail; 2212. Second adjusting component; 201. Rotating groove; 202. Second slide groove; 222. Lens clamping component; 2221. Through hole; 3. Lens fixing base plate; 31. Direct light inlet; 32. Positioning slide; 4. Camera fixing base plate. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1-7 As shown, a visual monitoring mechanism for monitoring seed crystals includes a camera assembly 1 and a lens assembly 2. The camera assembly 1 is used to capture and record changes in the seed crystal. The camera assembly 1 includes a camera adjustment structure 12 and a camera body 11 mounted on the camera adjustment structure 12. The lens assembly 2 includes at least one lens body 21 and a lens adjustment structure 22. When the camera body 11 is taking pictures, the lens assembly 2 is relatively fixed on a lens fixing base plate 3. The lens fixing base plate 3 has a light direct-light port 31. The visual monitoring mechanism is installed at the observation window of the crystal growth furnace, and the light direct-light port 31 is aligned with the observation window. The light emitted by the seed crystal under illumination travels in a straight line to the lens body 21 and then changes its propagation direction to form reflected light. The camera body 11 receives the reflected light after it has been deflected by the lens body 21. By utilizing the reflected light path of the lens body 21, a single camera replaces the traditional two-way cross-illumination monitoring scheme, avoiding light interference from the camera components and clearly capturing the melting boundary and dimensional change details of the seed crystal. The single camera reduces equipment investment and avoids the synchronous calibration operation of two cameras, reducing the difficulty of equipment debugging and camera maintenance costs.

[0021] like Figures 1-6As shown, the lens body 21 is mounted on the lens adjustment structure 22, which is fixed to the lens fixing base plate 3. The lens adjustment structure 22 includes at least one set of lens distance adjustment structures 221 and at least one lens clamping member 222. The lens distance adjustment structure 221 includes a first adjusting member 2211 and a second adjusting member 2212 that are fixed to each other. The first adjusting member 2211 is detachably connected to the lens fixing base plate 3. After the first adjusting member 2211 moves to the desired position, it is fixed to the lens fixing base plate 3. In at least one embodiment, the first adjusting member 2211 has an opening... There is at least one first slide groove 101, and at least one positioning member is detachably connected to the lens fixing base plate 3. The positioning member passes through the first slide groove 101 and is slidably connected to the first adjusting member 2211. The first adjusting member 2211 can move along the lens fixing base plate 3 to adjust the distance between the lens body 21 and the observation window and the lens of the camera body 11. This allows for coarse adjustment to adapt to the depth differences of the observation windows of different furnace types. At the same time, it adjusts the length of the light propagation path to avoid imaging distortion caused by excessive or insufficient light, and ensures that the light emitted by the seed crystal after being illuminated is accurately projected into the lens of the camera body 11 after reflection.

[0022] like Figures 1-6 As shown, the connection between the second adjusting member 2212 and the first adjusting member 2211 can be a sliding connection or a rotating connection. When the second adjusting member 2212 and the first adjusting member 2211 are rotatingly connected, in at least one embodiment, the first adjusting member 2211 is fixedly connected with at least one limiting member 102 and a rotating shaft 103 for the second adjusting member 2212 to rotate. The second adjusting member 2212 has at least one rotating groove 201. The limiting member 102 passes through the rotating groove 201 to limit the rotation angle of the second adjusting member 2212. This can be achieved by an interference fit between the limiting member 102 and the rotating groove 201, or by the limiting member 102 being a screw or bolt. After tightening, the second adjusting member 2212 is rotated to the required angle and fixed relative to the first adjusting member 2211. The rotation of the second adjusting member 2212 via the rotating shaft 103 should be limited by the arc-shaped rotating groove 201 and the limiting screw. The horizontal reflection angle of the lens body 21 can be flexibly adjusted within the preset angle range. By adjusting the angle, the interference area of ​​high-temperature heat radiation in the crystal growth furnace can be avoided. The observation angle can also be adjusted according to different stages of seed crystal growth to ensure that the state changes of the seed crystal are recorded throughout the process. After the screw or bolt is tightened, the angle of the second adjusting member 2212 can be locked to reduce the influence of the light path deviation caused by vibration during the use of the second adjusting member 2212.

[0023] like Figures 4-6As shown, when the second adjusting member 2212 and the first adjusting member 2211 are slidably connected, in at least one embodiment, the sliding directions of the first adjusting member 2211 and the second adjusting member 2212 are set at an angle. Preferably, the sliding directions of the first adjusting member 2211 and the second adjusting member 2212 are perpendicular to each other. After the second adjusting member 2212 slides to the desired position, it is fixed relative to the first adjusting member 2211. In at least one embodiment, a first slide rail 104 is provided on the end face of the first adjusting member 2211 near the second adjusting member 2212, and the second adjusting member 2212 slides along the first slide rail 104.

[0024] like Figures 1-6 As shown, the lens holder 222 and the second adjusting member 2212 can be connected by rotation or sliding. When the lens holder 222 and the second adjusting member 2212 are rotatably connected, in at least one embodiment, the second adjusting member 2212 is fixedly connected to a lens rotation axis. After the lens holder 222 rotates to the required angle through the lens rotation axis, it is fixed relative to the second adjusting member 2212. The lens holder 222 can independently adjust the pitch angle of a single lens body 21 by rotating through the lens rotation axis. The two lenses can be adapted to different reflected light paths respectively, realizing synchronous observation of different areas of the seed crystal. The optical path deviation caused by lens processing error can be offset by angle fine adjustment, further improving the imaging clarity.

[0025] like Figures 4-6 As shown, when the lens holder 222 and the second adjusting member 2212 are slidably connected, in at least one embodiment, the second adjusting member 2212 is provided with a second sliding groove 202, the sliding direction of the lens holder 222 is the same as the sliding direction of the second adjusting member 2212, and the lens holder 222 is fixed relative to the second adjusting member 2212 after sliding along the second sliding groove 202 to the desired position.

[0026] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the camera assembly 1 is fixedly connected to the camera mounting base 4. The camera adjustment structure 12 includes a camera mounting component 121, a camera height adjustment mechanism 122, and a camera angle adjustment mechanism 123. The end of the camera mounting base 4 near the lens assembly 2 is fixedly connected to the end of the lens mounting base 3 away from the lens assembly 2. The camera body 11 is fixedly connected to the camera mounting component 121, and the lens of the camera body 11 faces the reflected light path of the lens body 21.

[0027] like Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, the camera height adjustment mechanism 122 includes a support member 1221 and a height adjustment member 1222. The height adjustment member 1222 is slidably connected to the support member 1221. The camera angle adjustment mechanism 123 includes an angle adjustment member 1231 and a camera rotation axis 1232. The angle adjustment member 1231 is fixedly connected to the camera mounting base plate 4. In at least one embodiment, the angle adjustment member 1231 has an arc-shaped groove 301. The angle adjustment member 1231 is rotatably connected to the support member 1221. The support member 1221 is fixedly connected with a side rod that passes through the arc-shaped groove 301. The end of the height adjustment member 1222 away from the support member 1221 is fixedly connected to the camera rotation axis 1232. The camera mounting member 121 is rotatably connected to the camera rotation axis 1232. After the support member 1221 rotates to the required angle, it is fixed relative to the angle adjustment member 1231. After the camera mounting member 121 rotates to the required angle, it is fixed relative to the camera rotation axis 1232.

[0028] Example 1

[0029] like Figures 1-3 and Figure 7As shown, a visual monitoring mechanism for monitoring seed crystals includes a camera assembly 1 and a lens assembly 2. The camera assembly 1 includes a camera adjustment structure 12 and a camera body 11 mounted on the camera adjustment structure 12. The lens assembly 2 includes two lens bodies 21 and two sets of lens adjustment structures 22. The lens bodies 21 are front-coated lenses. The lens of the camera body 11 faces the reflected light path of the lens body 21. The light emitted by the seed crystal under illumination travels in a straight line towards the lens body 21 and then changes its propagation direction to form reflected light. The camera body 11 receives the reflected light after it has been deflected by the lens body 21. When the camera body 11 takes a picture, the lens body 21... The lens adjustment structure 22 is fixed on a rectangular lens fixing base plate 3. The lens fixing base plate 3 has a circular light direct illumination port 31. The size of the opening at one end of the lens fixing base plate 3 is adjusted by a locking screw. The visual monitoring mechanism is installed at the observation window of the crystal growth furnace, with the light direct illumination port 31 aligned with the observation window. Each set of lens adjustment structures 22 includes a set of lens distance adjustment structures 221 and a lens clamping component 222. The lens body 21 is clamped on the lens clamping component 222. The lens distance adjustment structure 221 includes a first adjusting component 2211 and a second adjusting component 2212 that are relatively fixed. The first adjustment component 2211 is a plastic plate with a semi-circular cross-section at one end near the camera body 11 and a rectangular cross-section at the other end away from the camera body 11. The second adjustment component 2212 is a plastic plate with a circular cross-section. The first adjustment component 2211 is mounted on the lens fixing base plate 3. The first adjustment component 2211 has two parallel first sliding grooves 101, which are straight, waist-shaped grooves. Four positioning components are mounted on the lens fixing base plate 3. Every two positioning components pass through one first sliding groove 101 and slide to connect with the first adjustment component 2211. The positioning components are screws, which are tightened... The first adjusting member 2211 is clamped and fixed. The second adjusting member 2212 is rotatably connected to the first adjusting member 2211. The first adjusting member 2211 is equipped with a rotating shaft 103 for the second adjusting member 2212 to rotate and two symmetrically arranged cylindrical limiting members 102. The second adjusting member 2212 has two symmetrical arc-shaped rotating grooves 201. The limiting members 102 pass through the rotating grooves 201 and limit the rotation angle of the second adjusting member 2212 through the rotating grooves 201. The limiting members 102 are screws. After tightening the limiting members 102, the second adjusting member 2212 is fixed relative to the first adjusting member 2211.The lens clamp 222 has a U-shaped cross-section. A through hole 2221 is provided at the end of the lens clamp away from the opening. The lens clamp 222 is rotatably connected to the second adjusting member 2212, which is equipped with a lens rotation shaft. After the lens clamp 222 rotates to the desired angle via the lens rotation shaft, a set screw passes through the through hole 2221 and abuts against the rotation shaft, preventing the shaft from rotating. This fixes the lens clamp 222 and the second adjusting member 2212 relative to each other. The lens clamp, secured with the set screw, firmly clamps the lens body 21, preventing edge damage to the lens body 21 and ensuring stable optical performance.

[0030] like Figure 1 and Figure 3As shown, camera assembly 1 is mounted on a rectangular camera mounting base 4. Camera adjustment structure 12 includes a camera mounting bracket 121, a camera height adjustment mechanism 122, and a camera angle adjustment mechanism 123. The camera height adjustment mechanism 122 includes a support member 1221 and a height adjustment member 1222. The end of the camera mounting base 4 near the lens assembly 2 is fixedly connected to the end of the lens mounting base 3 away from the lens assembly 2 by screws. Camera body 11 is mounted on the camera mounting bracket 121, which is a support plate with clamping function. The support member 1221 is cylindrical, and the height adjustment member 1222 is an inverted L-shape. One end of the height adjustment component 1222 is fitted onto the support component 1221, and the other end is fitted onto the camera rotation shaft 1232. After the height adjustment component 1222 is moved to the desired height, it is tightened with screws to fix the height adjustment component 1222 relative to the support component 1221. The camera angle adjustment mechanism 123 includes an angle adjustment component 1231 and a camera rotation shaft 1232. The angle adjustment component 1231 is fixedly installed on the camera mounting base plate 4 with screws. The cross-sectional shape of the angle adjustment component 1231 is inverted T-shaped, and an arc-shaped groove 301 is opened on the side wall of the angle adjustment component 1231. A rotation shaft is installed on the side wall of the angle adjustment component 1231. The support member 1221 is mounted on the rotating shaft and rotates. The support member 1221 is integrally formed with a side rod that passes through the arc-shaped groove 301. After the support member 1221 rotates to the required angle, it is tightened with screws to fix it relative to the angle adjustment member 1231. The camera mounting member 121 is clamped on the camera rotating shaft 1232. After the camera mounting member 121 rotates to the required angle, it is tightened with screws to fix the camera mounting member 121 relative to the camera rotating shaft 1232. The height adjustment member 1222 can slide up and down along the cylindrical support member 1221 and is locked with screws to adjust the height of the camera body 11, ensuring that the lens of the camera body 11 is always in the correct position. Finally, the camera body 11 is aligned with the center area of ​​the reflected light to avoid image shift or image loss. The angle adjustment component 1231 can adjust the observation angle of the camera body 11 within the trajectory range limited by the arc groove 301. The cooperation between the side rod and the arc groove 301 prevents the lens of the camera body 11 from deviating from the reflected light path, thereby improving adjustment efficiency. The camera mounting component 121 can rotate 360° through the camera rotation axis 1232 to flexibly adjust the orientation of the camera lens. After tightening the screw, the angle is locked and aligned with the intersection of the reflected light paths of the two lens bodies 21, realizing the synchronous reception of the reflected signals of the two lenses by a single camera, ensuring the integrity of multi-region observation of the seed crystal.

[0031] Example 2

[0032] like Figures 4-6As shown, Embodiment 2 differs from Embodiment 1 only in the lens adjustment structure 22. In Embodiment 2, the angle between the lens body 21 and the second adjusting member 2212 is fixed. The lens clamping member 222 is placed at an inclined angle to the lens fixing base plate 3. The lens distance adjustment structure 221 includes a first adjusting member 2211 and a second adjusting member 2212 that are relatively fixed. Two straight positioning grooves 32 are provided on the end face of the lens fixing base plate 3. After the first adjusting member 2211 slides along the positioning groove 32 to the desired position, it is tightened with screws to fix the first adjusting member 2211 to the lens fixing base plate 3. The first adjusting member 2211 has a semi-circular cross-section at the end near the camera body 11 and a semi-circular cross-section at the end away from the camera body 11. The first adjusting member 2211 is a rectangular plastic plate, while the second adjusting member 2212 is a circular plastic plate. The first adjusting member 2211 is mounted on the lens fixing base plate 3. The first adjusting member 2211 has two parallel first sliding grooves 101, which are straight, waist-shaped grooves. Four positioning members are mounted on the lens fixing base plate 3. Each pair of positioning members passes through one first sliding groove 101 and is slidably connected to the first adjusting member 2211. The positioning members are screws, which clamp and fix the first adjusting member 2211 when tightened. The second adjusting member 2212 is slidably connected to the first adjusting member 2211. The first adjusting member 2211 has a first sliding track 104. The second adjusting member 2212 moves along the first sliding track 104 to the desired position and then... The first adjusting member 2211 and the second adjusting member 2212 are fixed relative to each other by tightening screws. The sliding directions of the first adjusting member 2211 and the second adjusting member 2212 are perpendicular to each other. The length directions of the first slide groove 101 and the first slide rail 104 are perpendicular to each other. The lens clamping member 222 is slidably connected to the second adjusting member 2212. The lower end surface of the lens clamping member 222 is inclined and fits against the upper end surface of the second adjusting member 2212. A protrusion is integrally formed at the lower end of the lens clamping member 222, and the protrusion passes through the first slide rail 104. The second adjusting member 2212 has a straight second slide groove 202. The sliding direction of the lens clamping member 222 is the same as the sliding direction of the second adjusting member 2212. The lens clamping member 222 slides along the second slide groove 202. 2. After sliding to the desired position, tighten the screws to fix the lens holder 222 and the second adjusting member 2212 relative to each other. The lens body 21 of the visual monitoring mechanism for monitoring seed crystals can be adjusted in two directions. The distance adjustment optimizes the light propagation path and can also adjust the spacing between the two lens bodies 21, so that the reflected light paths of the two lens bodies 21 are accurately converged on the camera lens, ensuring complete imaging of the overall state of the seed crystal. The lens body 21 and the second adjusting member 2212 form a fixed tilted reflection angle. This angle is preset and optimized, and can be directly adapted to the seed crystal observation angle of the existing crystal growth furnace without additional angle adjustment, simplifying the operation process. The lens holder 222 is finely adjusted in position along the sliding direction of the second adjusting member 2212.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A visual monitoring mechanism for monitoring seed crystals, characterized in that, include: The camera assembly (1) is used to capture and record changes in the seed crystal, including a camera adjustment structure (12) and a camera body (11) disposed on the camera adjustment structure (12). The lens assembly (2) includes at least one lens body (21). When the camera body (11) takes a picture, the lens assembly (2) is fixed to the lens fixing base plate (3). The lens fixing base plate (3) has a light direct-light port (31). When the seed crystal is illuminated, the light emitted is directed in a straight line towards the lens body (21) and then changes its propagation direction to form reflected light. The camera body (11) receives the reflected light after it has been deflected by the lens body (21).

2. The visual monitoring mechanism for monitoring seed crystals according to claim 1, characterized in that: The lens assembly (2) further includes a lens adjustment structure (22), the lens body (21) is disposed on the lens adjustment structure (22), the lens adjustment structure (22) is relatively fixed on the lens fixing base plate (3), and the lens adjustment structure (22) includes at least one set of lens distance adjustment structures (221) and at least one lens clamping member (222).

3. The visual monitoring mechanism for monitoring seed crystals according to claim 2, characterized in that: The lens distance adjustment structure (221) includes a first adjustment member (2211) and a second adjustment member (2212) that are relatively fixed. The first adjustment member (2211) is detachably connected to the lens fixing base plate (3). After the first adjustment member (2211) is moved to the desired position, it is relatively fixed to the lens fixing base plate (3).

4. The visual monitoring mechanism for monitoring seed crystals according to claim 3, characterized in that: The first adjusting member (2211) has at least one first sliding groove (101), and the lens fixing base plate (3) is detachably connected to at least one positioning member, which is inserted into the first sliding groove (101) and slidably connected to the first adjusting member (2211).

5. The visual monitoring mechanism for monitoring seed crystals according to claim 3, characterized in that: The second adjusting member (2212) is rotatably connected to the first adjusting member (2211). The first adjusting member (2211) is fixedly connected to at least one limiting member (102) and a rotating shaft (103) for the second adjusting member (2212) to rotate. The second adjusting member (2212) has at least one rotating groove (201). The limiting member (102) passes through the rotating groove (201) to limit the rotation angle of the second adjusting member (2212). After the second adjusting member (2212) rotates to the required angle, it is fixed relative to the first adjusting member (2211).

6. The visual monitoring mechanism for monitoring seed crystals according to claim 3, characterized in that: The second adjusting member (2212) is slidably connected to the first adjusting member (2211). The sliding directions of the first adjusting member (2211) and the second adjusting member (2212) are set at an angle. After the second adjusting member (2212) slides to the desired position, it is fixed relative to the first adjusting member (2211).

7. The visual monitoring mechanism for monitoring seed crystals according to claim 3, characterized in that: The lens clamp (222) is rotatably connected to the second adjusting member (2212), and the second adjusting member (2212) is fixedly connected to the lens rotation shaft. After the lens clamp (222) is rotated to the required angle through the lens rotation shaft, it is fixed relative to the second adjusting member (2212).

8. The visual monitoring mechanism for monitoring seed crystals according to claim 3, characterized in that: The lens holder (222) is slidably connected to the second adjusting member (2212). The second adjusting member (2212) has a second sliding groove (202). After the lens holder (222) slides along the second sliding groove (202) to the desired position, it is fixed relative to the second adjusting member (2212).

9. The visual monitoring mechanism for monitoring seed crystals according to claim 1, characterized in that: The camera assembly (1) is fixedly connected to the camera mounting base (4). The camera adjustment structure (12) includes a camera mounting component (121), a camera height adjustment mechanism (122), and a camera angle adjustment mechanism (123). The end of the camera mounting base (4) near the lens assembly is fixedly connected to the end of the lens mounting base (3) away from the lens assembly (2). The camera body (11) is fixedly connected to the camera mounting component (121). The lens of the camera body (11) faces the reflected light path of the lens body (21).

10. A visual monitoring mechanism for monitoring seed crystals according to claim 9, characterized in that: The camera height adjustment mechanism (122) includes a support member (1221) and a height adjustment member (1222). The height adjustment member (1222) is slidably connected to the support member (1221). The camera angle adjustment mechanism (123) includes an angle adjustment member (1231) and a camera rotation axis (1232). The angle adjustment member (1231) is fixedly connected to the camera mounting base plate (4). The angle adjustment member (1231) has an arc-shaped groove (301). The angle adjustment member (1231) and the support member (1221) are connected. 1) Rotary connection, the support member (1221) is fixedly connected with a side rod that passes through the arc groove (301), the end of the height adjustment member (1222) away from the support member (1221) is fixedly connected to the camera rotation axis (1232), the camera mounting member (121) is rotatably connected to the camera rotation axis (1232), the support member (1221) is fixed relative to the angle adjustment member (1231) after rotating to the required angle, and the camera mounting member (121) is fixed relative to the camera rotation axis (1232) after rotating to the required angle.

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