Optical element decomposition system and method

Abstract

The invention discloses an optical element decomposition system and method. The optical element decomposition system comprises a jig for containing a cracked optical element, the jig is provided with an opening, and the opening exposes a cutting line of the cracked optical element; the hot knife assembly is located on the side, away from the cracked optical piece, of the jig in the vertical direction; the hot knife assembly comprises hot knife edges, and the hot knife edges directly face the cutting line and are arranged at intervals in the vertical direction. According to the optical element decomposition system, non-contact heating of the position of the cutting line is achieved, meanwhile, the whole cutting line is heated, accurate, efficient and low-damage decomposition of the cracked optical element is achieved, operation is easy, the decomposition speed is high, cost is low, and the optical element decomposition system is suitable for mass production and use.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lens processing, and particularly to an optical element decomposition system and method. Background Art

[0002] Optical elements are small in size and high in precision requirements. The method of decomposing optical elements after high-frequency laser cutting is a difficult point in the industry. The common optical element decomposition method is the cutting and decomposition technology based on a carbon dioxide laser. This method uses the high-energy laser beam generated by the carbon dioxide laser to perform a circular scan on the optical element along a preset cutting line. Through the concentrated irradiation of the laser energy, the material in the cutting line area is locally rapidly heated to a high-temperature state, and the thermal stress damage effect generated by the temperature gradient inside the material is used to force the optical element to separate along the cutting line direction.

[0003] However, the irradiation of the high-energy laser will cause a thermal damage layer to form on the material surface, thereby affecting the overall performance of the optical element; in addition, the carbon dioxide laser is expensive, and the supporting precision optical system, temperature control system and motion control components further increase the overall cost of the equipment, making it difficult to popularize. Summary of the Invention

[0004] The embodiments of the present invention provide an optical element decomposition system and method, which realize non-contact heating of the cutting line position, and at the same time heat the entire cutting line, achieving precise, efficient and low-damage decomposition of the cracked optical parts, with simple operation, fast decomposition speed, low cost, and being suitable for mass production and use.

[0005] In a first aspect, an optical element decomposition system includes:

[0006] A jig for holding the cracked optical part, the jig is provided with an opening, and the opening exposes the cutting line of the cracked optical part;

[0007] A hot knife assembly. In the vertical direction, the hot knife assembly is located on the side of the jig away from the cracked optical part; the hot knife assembly includes a hot knife edge, and the hot knife edge is opposite to the cutting line and is spaced along the vertical direction.

[0008] Optionally, the hot knife assembly includes a hot knife, and the hot knife includes a side wall and a high-frequency coil wound around the periphery of the side wall.

[0009] Optionally, the side wall includes a connected side wall main body part and the hot knife edge, the hot knife edge is located on the side of the side wall main body part facing the jig, and the thickness of the hot knife edge is less than the thickness of the side wall main body part.

[0010] Optionally, the hot knife assembly further includes an adapter. The first end of the adapter is fixedly connected to the hot knife, and the shape of the second end of the adapter is adapted to the shape of the cutting line.

[0011] Optionally, the fixture includes a fixture main body, a shielding member, and at least one connecting rib. The fixture main body is located on the periphery of the shielding member, and the fixture main body and the shielding member are connected by the connecting rib.

[0012] Optionally, along the vertical direction, the thickness of the connecting rib is less than the thickness of the shielding member.

[0013] Optionally, the at least one connecting rib includes a first connecting rib, a second connecting rib, a third connecting rib, and a fourth connecting rib arranged in sequence. The first connecting rib is opposite to the third connecting rib, and the second connecting rib is opposite to the fourth connecting rib.

[0014] Optionally, the hot knife edge is located on the side of the opening away from the optical member to be split;

[0015] Alternatively, at least a part of the hot knife edge is located in the opening.

[0016] In a second aspect, an optical element decomposition method includes:

[0017] Placing the optical member to be split on the fixture, and the opening of the fixture exposes the cutting line of the optical member to be split; and placing the hot knife assembly on the side of the fixture away from the optical member to be split along the vertical direction, and the hot knife edge of the hot knife assembly is aligned with the cutting line and arranged at an interval along the vertical direction;

[0018] Heating the hot knife edge to a preset temperature.

[0019] Optionally, after heating the hot knife edge to the preset temperature, it further includes:

[0020] Immersing the optical member to be split after heating the cutting line in liquid cooling or gas cooling.

[0021] In the optical element decomposition system in the embodiments of the present invention, through the heating of the hot knife edge in the hot knife assembly, the heat of the hot knife edge passes through the opening provided in the fixture to heat the position of the cutting line of the optical member to be split. The hot knife edge and the cutting line are arranged at an interval, so as to realize non-contact heating of the cutting line position. On the other hand, the heating surface of the hot knife edge is not a point, and there is no need to move along the trajectory of the cutting line, that is, the entire cutting line can be heated simultaneously. It realizes accurate, efficient, and low-damage decomposition of the optical member to be split, is simple to operate, has a fast decomposition speed, low cost, and is suitable for mass production and use. Description of the Drawings

[0022] Figure 1 It is a cross-sectional view of an optical element decomposition system provided by an embodiment of the present invention;

[0023] Figure 2 It is a top view of a jig provided by an embodiment of the present invention;

[0024] Figure 3 It is a top view of a cracked optical element provided by an embodiment of the present invention;

[0025] Figure 4 It is a cross-sectional view of another optical element decomposition system provided by an embodiment of the present invention;

[0026] Figure 5 It is a top view of a hot knife edge provided by an embodiment of the present invention;

[0027] Figure 6 It is a flowchart of an optical element decomposition method provided by an embodiment of the present invention;

[0028] Figure 7 It is a flowchart of another optical element decomposition method provided by an embodiment of the present invention. Detailed implementation manners

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only some parts related to the present invention rather than all the structures are shown in the drawings.

[0030] Figure 1 It is a cross-sectional view of an optical element decomposition system provided by an embodiment of the present invention; Figure 2 It is a top view of a jig provided by an embodiment of the present invention; Figure 3 It is a top view of a cracked optical element provided by an embodiment of the present invention; Refer to Figures 1 to 3 , the optical element decomposition system includes a jig 20 and a hot knife assembly 30. The jig 20 holds the cracked optical element 10. The jig 20 is provided with an opening 21, and the opening 21 exposes the cutting line 11 of the cracked optical element 10. The cracked optical element 10 is the optical element to be decomposed. In the vertical direction, the hot knife assembly 30 is located on the side of the jig 20 away from the cracked optical element 10; the hot knife assembly 30 includes a hot knife edge 3112, and the hot knife edge 3112 is aligned with the cutting line 11 and is spaced apart in the vertical direction. Among them, the vertical direction refers to the normal direction of the plane where the jig 20 holds the cracked optical element 10, that is, the direction perpendicular to the cracked optical element 10.

[0031] Among them, the fixture 20 holds the optical component to be cracked 10. The optical component to be cracked 10 is placed at the center of the fixture 20. The thickness of the optical component to be cracked 10 can be 1-3 mm. In one example, the thickness of the optical component to be cracked 10 is 2 mm. The outer shape of the optical component to be cracked 10 is circular, but not limited thereto. The outer shape pattern of the optical component to be cracked 10 can be set as needed. For example, it can also be square. According to the outer shape pattern of the optical component to be cracked 10, at least cutting lines 11 are formed on the component blank with a pulsed laser cutting device. Radial auxiliary cutting lines 12 can also be set outside the cutting lines 11. The auxiliary cutting lines 12 help the optical component to be cracked 10 to decompose. The cutting lines 11 and the auxiliary cutting lines 12 include a plurality of closely spaced fine holes ( Figure 3 not shown in the figure). That is to say, the cutting lines 11 and the auxiliary cutting lines 12 include a string formed by a plurality of fine holes, simply referred to as a fine hole string. The fine hole string can enable the thermal stress generated during subsequent heating to be preferentially released around the fine holes, guiding the material to crack or separate along the connection direction of the fine holes, avoiding the random diffusion of stress resulting in component fragmentation or damage to non-target areas, and at the same time enhancing the heat conduction and the decomposition efficiency of the optical component to be cracked 10.

[0032] Exemplarily, referring to Figure 2 , in this embodiment, the fixture 20 is provided with an annular opening 21. The opening 21 exposes the cutting lines 11 of the optical component to be cracked 10. The shape of the annular opening 21 matches the shape of the cutting lines 11, which helps to accurately heat and decompose the optical component to be cracked 10 subsequently. On the side of the fixture 20 away from the optical component to be cracked 10, there is a hot knife edge 3112 of the hot knife assembly 30. The distance between the hot knife edge 3112 and the optical component to be cracked 10 below can be 0.05-0.5 mm. In one example, the distance between the hot knife edge 3112 and the optical component to be cracked 10 is 0.2 mm, which can ensure heat transfer without burning out the optical component to be cracked 10. Among them, the hot knife edge 3112 is arranged at a certain distance from the optical component to be cracked 10, and the heat transfer to the optical component to be cracked 10 is by non-contact radiation. The hot knife edge 3112 is a heat-generating knife edge structure. When the hot knife edge 3112 heats the area below the cutting lines 11, the material near the cutting lines 11 quickly heats up and expands, forming local thermal stress near the cutting lines 11. When the stress exceeds the material strength, the optical component to be cracked 10 generates cracks along the cutting lines 11 and expands, realizing non-contact fracture.

[0033] The optical element decomposition system in the embodiment of the present invention is heated by the hot knife edge 3112 in the hot knife assembly 30. The heat of the hot knife edge 3112 passes through the opening 21 provided in the jig 20 to heat the position of the cutting line 11 of the cracked optical component 10. The hot knife edge 3112 is spaced apart from the cutting line 11, thereby achieving non-contact heating of the cutting line 11. On the other hand, the heating surface of the hot knife edge 3112 is not a single point and does not need to be moved along the trajectory of the cutting line 11, that is, the entire cutting line 11 can be heated at the same time. Accurate, efficient, and low-damage decomposition of the cracked optical component 10 is achieved, the operation is simple, the decomposition speed is fast, the cost is low, and it is suitable for mass production and use.

[0034] Optional, continue to refer to Figure 1 The hot knife assembly 30 includes a hot knife 31 , and the hot knife 31 includes a side wall 311 and a high-frequency coil 313 . The high-frequency coil 313 is wound around the periphery of the side wall 311 ; the side wall 311 is connected to the hot knife edge 3112 .

[0035] For example, refer to Figure 1 The hot knife assembly 30 includes a hot knife 31, and the hot knife 31 includes a side wall 311 and a high-frequency coil 313; the material of the hot knife 31 can be a metal material (such as stainless steel). Stainless steel has good high temperature resistance and oxidation resistance. The hot knife 31 needs to withstand high temperature for a long time during the heating process of the high-frequency coil 313. Among them, the temperature of the hot knife edge 3112 can reach 400-800°C. Stainless steel can resist thermal expansion deformation and oxidation corrosion under high temperature, avoiding the hot knife edge 3112 from softening or brittle due to high temperature, ensuring that the hot knife 31 maintains shape accuracy and heating efficiency during frequent use.

[0036] For example, refer to Figure 1, the high-frequency coil 313 is wound around the periphery of the side wall 311. The function of the high-frequency coil 313 is to heat the hot knife 31. The energization and heating time of the high-frequency coil 313 is 1 second to 10 seconds. In one example, the energization and heating time of the high-frequency coil 313 is 2.5 seconds. The electric power of the high-frequency coil 313 is 2000 to 4000 watts. In one example, the electric power of the high-frequency coil 313 is 3000 watts. After the high-frequency coil 313 is energized, an alternating magnetic field is generated. The frequency of the alternating current in the high-frequency coil 313 is 10 to 70 kHz. In one example, the frequency of the alternating current in the high-frequency coil 313 is 40 kHz. When the magnetic field passes through the side wall 311 of the hot knife 31, eddy currents are induced at least within the side wall 311 of the hot knife 31. The eddy currents generate Joule heat through the resistance of the side wall 311 of the hot knife 31, rapidly heating the side wall 311 of the hot knife 31, thereby rapidly heating the hot knife edge 3112 at the end of the side wall 311, and then rapidly locally heating the cutting line 11 of the optical component 10 to be cracked, causing the cutting line 11 to expand and realizing the decomposition of the optical component 10 to be cracked. The entire heating process converts electrical energy into thermal energy through the electromagnetic induction effect, and has high energy efficiency, enabling the metal conductor in the high-frequency coil 313 to heat up by more than 200 °C per second.

[0037] Exemplarily, the material of the high-frequency coil 313 can be a coiled copper tube with internal water flow. Copper has high conductivity and low resistivity, which can concentrate the high-frequency current on the surface of the conductor, make the electrical energy be converted into magnetic field energy more efficiently, and reduce energy loss. The internal water-cooling design can quickly remove the Joule heat generated by the high-frequency coil 313 through the circulating water flow, control the temperature of the high-frequency coil 313 within a safe range, and ensure the stability of the system during operation. The shape of the high-frequency coil 313 is coiled, and the coiled structure can form an axially concentrated alternating magnetic field, whose magnetic field lines perpendicularly pass through the side wall 311 of the hot knife 31, generating denser eddy currents at the hot knife edge 3112, concentrating the heat in an extremely narrow area directly below the cutting line 11, and quickly raising the temperature of the cutting line 11 area to 400 - 800 °C, quickly and efficiently realizing the decomposition of the optical component 10 to be cracked.

[0038] Exemplarily, the hot knife 31 further includes a bottom wall connecting to the side wall 311. The bottom wall closes one end of the cavity formed by the side wall 311, forming a semi-closed structure with an opening on one side of the hot knife edge 3112. Among them, when decomposing the optical component, the hot knife assembly 30 will heat up. A mica gasket can be placed below the hot knife assembly 30 (i.e., on the side of the bottom wall of the hot knife 31 away from the jig 20) for heat insulation at the bottom of the hot knife assembly 30.

[0039] Optionally, continue to refer to Figure 1, the side wall 311 includes a connected side wall main body portion 3111 and a hot cutting edge 3112. The hot cutting edge 3112 is located on the side of the side wall main body portion 3111 facing the fixture 20, and the thickness of the hot cutting edge 3112 is less than that of the side wall main body portion 3111. The shape of the hot cutting edge 3112 is blade-shaped, which can concentrate heat in an extremely narrow area of the cutting line 11, ensuring that the area of the cutting line 11 reaches a high temperature and is more conducive to the decomposition of the cracked optical element 10.

[0040] Exemplarily, the diameter of the hot cutting edge 3112 can be 10 - 20 mm, and the wall thickness of the hot cutting edge 3112 can be 0.05 - 0.5 mm. In one example, the diameter of the hot cutting edge 3112 is 15 mm, and the wall thickness of the hot cutting edge 3112 is 0.2 mm. The diameter of the hot cutting edge 3112 matches the diameter of the cutting line 11 to ensure that the hot cutting edge 3112 can evenly cover the target heating area; the thin-wall structure of the hot cutting edge 3112 is more conducive to heat focusing, enabling it to heat up faster.

[0041] Optionally, Figure 4 is a cross-sectional view of another optical element decomposition system provided by an embodiment of the present invention; refer to Figure 4 , in another embodiment of the present invention, the hot knife assembly 30 further includes an adapter 32. The first end of the adapter 32 is fixedly connected to the hot knife 31, and the shape of the second end of the adapter 32 is adapted to the shape of the cutting line 11.

[0042] Among them, the first end of the adapter 32 is fixedly connected to the hot knife 31, and the second end of the adapter 32 can be adapted to the specific shape of the cutting line 11 of the cracked optical element 10, such as circular, square, triangular, etc. The embodiment of the present invention does not limit this. For example, the first end of the adapter 32 and the hot knife 31 can be connected by threads or snaps. The adapter 32 can make the hot knife 31 match the cutting line 11 of any shape. For different cracked optical elements 10 and cutting lines 11, there is no need to remanufacture the hot knife 31, improving the utilization rate of the hot knife 31 and reducing the production cost.

[0043] Optionally, continue to refer to Figure 1 and Figure 2 , the fixture 20 includes a fixture main body portion 22, a shielding member 23, and at least one connecting rib 24. The fixture main body portion 22 is located on the periphery of the shielding member 23, and the fixture main body portion 22 and the shielding member 23 are connected by the connecting rib 24.

[0044] In one example, the cracked optical element 10 is circular, the cutting line 11 of the cracked optical element 10 is circular, and the opening 21 is an annular groove.

[0045] It can be understood that the hot cutting edge 3112 only needs to heat the cutting line 11 and the auxiliary cutting line 12, and other parts of the cracked optical component 10 do not need to be heated. The opening 21 only needs to expose the cutting line 11 and a very small area around it. The shielding component 23 of the fixture 20 is located in the central area of the fixture 20, and the main body part of the cracked optical component 10 is shielded by the shielding component 23, which can prevent the non-splitting area from being damaged.

[0046] Among them, the fixture main body part 22 and the shielding component 23 are connected by a connecting rib 24. The connecting rib 24 connects the fixture main body part 22 and the shielding component 23 to form a complete fixture 20, realizing the connection of multiple components and improving the stability of the fixture 20.

[0047] Among them, the material of the fixture 20 can be selected as a ceramic material, which has high hardness, high temperature resistance, and oxidation resistance, and can extend the service life of the fixture 20.

[0048] Optionally, in the vertical direction, the thickness of the connecting rib 24 is less than the thickness of the shielding component 23. This reduces the blocking effect of the connecting rib 24 on the heat propagation towards the cracked optical component 10.

[0049] The connecting rib 24 is arranged in the opening 21. To prevent the hot cutting edge 3112 from contacting the connecting rib 24, the thickness of the connecting rib 24 is set to be less than the thickness of the shielding component 23, so that the two are close but do not touch. On the other hand, since the heat conduction speed of the hot cutting edge 3112 in this embodiment is extremely fast, about 2 - 5 seconds, in order to make the heat distribution on each area of the cutting line 11 uniform, the thickness of the connecting rib 24 is set to be less than the thickness of the shielding component 23, avoiding incomplete cracking of some areas of the cutting line 11 due to the excessive thickness of the connecting rib 24.

[0050] Optionally, continuing to refer to Figure 2 , at least one connecting rib 24 includes a first connecting rib 241, a second connecting rib 242, a third connecting rib 243, and a fourth connecting rib 244 arranged in sequence. The first connecting rib 241 is opposite to the third connecting rib 243, and the second connecting rib 242 is opposite to the fourth connecting rib 244.

[0051] Among them, the annular fixture main body part 22 and the shielding component 23 are fixed as a whole through symmetrically distributed first connecting rib 241, second connecting rib 242, third connecting rib 243, and fourth connecting rib 244, avoiding relative displacement between the two when heated and ensuring the structural stability of the fixture 20. As a connecting component inside the fixture 20, the connecting rib 24 can share the gravity of the cracked optical component 10 for the shielding component 23, avoid local stress concentration, and improve the stability of the fixture 20. In other embodiments, other numbers of connecting ribs 24 can also be used, for example, 1 connecting rib 24, 2 connecting ribs 24. The present invention does not limit this.

[0052] Optionally, referring to Figure 1 , the hot cutting edge 3112 is located on the side of the opening 21 away from the optical component 10 to be split. The hot cutting edge 3112 is located below the opening 21.

[0053] In other embodiments, at least a part of the hot cutting edge 3112 may also be located in the opening 21. Thus, the distance between the hot cutting edge 3112 and the optical component 10 to be split is reduced, the distance for the heat generated by the hot cutting edge 3112 to propagate to the optical component 10 to be split is reduced, and the heating effect on the optical component 10 to be split is improved. Exemplarily, the hot cutting edge 3112 can extend into the opening 21 of the jig 20, and the distance between the hot cutting edge 3112 and the optical component 10 to be split below the optical component 10 to be split can be 0.05 - 0.5 mm. In one example, the distance between the hot cutting edge 3112 and the optical component 10 to be split is 0.2 mm, achieving faster heat conduction.

[0054] Figure 5 is a top view of a hot cutting edge provided by an embodiment of the present invention, referring to Figures 1 - 5 , the hot cutting edge 3112 is provided with an avoidance groove 3113, the width of the avoidance groove 3113 is greater than the width of the connecting rib 24, and the number of the avoidance grooves 3113 is equal to the number of the connecting ribs 24. Along the vertical direction, the avoidance groove 3113 is directly opposite to the connecting rib 24, so that the avoidance groove 3113 can accommodate the connecting rib 24, enabling at least a part of the hot cutting edge 3112 to penetrate into the opening 21 and reducing the distance between the hot cutting edge 3112 and the optical component 10 to be split.

[0055] Figure 6 is a flowchart of an optical element splitting method provided by an embodiment of the present invention, referring to Figures 1 - 6 , the optical element splitting method includes:

[0056] S101. Place the optical component 10 to be split on the jig 20, and the opening of the jig 20 exposes the cutting line 11 of the optical component 10 to be split.

[0057] S102. Place the hot knife assembly 30 on the side of the jig 20 away from the optical component 10 to be split along the vertical direction, and the hot cutting edge 3112 of the hot knife assembly 30 is directly opposite to the cutting line 11 and is spaced apart along the vertical direction.

[0058] S103. Heat the hot cutting edge 3112 to a preset temperature.

[0059] The optical element decomposition method provided by the embodiment of the present invention uses the optical element decomposition system provided in the above embodiment. The hot knife edge 3112 is heated to a preset temperature, and the heat of the hot knife edge 3112 passes through the opening 21 provided in the jig 20 to heat the position of the cutting line 11 of the optical element 10 to be cracked. The hot knife edge 3112 is arranged at an interval from the cutting line 11, so as to realize non-contact heating of the position of the cutting line 11. On the other hand, the heating surface of the hot knife edge 3112 is not a point, and there is no need to move along the trajectory of the cutting line 11, that is, the entire cutting line 11 can be heated simultaneously. The accurate, efficient and low-damage decomposition of the optical element 10 to be cracked is realized, the operation is simple, the decomposition speed is fast, the cost is low, and it is suitable for mass production and use.

[0060] Among them, the preset temperature of the hot knife edge 3112 is set to 400-800 °C. The energization heating time of the high-frequency coil 313 is 1 second to 10 seconds. In one example, the energization heating time of the high-frequency coil 313 is 2.5 seconds. The electric power of the high-frequency coil 313 is 2000-4000 watts. In one example, the electric power of the high-frequency coil 313 is 3000 watts.

[0061] Optionally, Figure 7 is a flowchart of another optical element decomposition method provided by the embodiment of the present invention; the optical element decomposition method includes:

[0062] S201. Place the optical element 10 to be cracked on the jig 20, and the opening of the jig 20 exposes the cutting line 11 of the optical element 10 to be cracked.

[0063] S202. Place the hot knife assembly 30 on the side of the jig 20 away from the optical element 10 to be cracked in the vertical direction, and the hot knife edge 3112 of the hot knife assembly 30 is directly opposite to the cutting line 11 and arranged at an interval in the vertical direction.

[0064] S203. Heat the hot knife edge 3112 to a preset temperature.

[0065] S204. Immerse the optical element 10 to be cracked after heating the cutting line 11 in liquid refrigeration or gas refrigeration.

[0066] Exemplarily, the temperature of the optical element 10 to be cracked after heating the cutting line 11 is relatively high. The suction nozzle and the manipulator can be used to pick up or place the optical element 10 to be cracked after heating the cutting line 11. The heated optical element 10 to be cracked is immersed in cold water or blown with cold air for heat dissipation. The optical element 10 to be cracked is quickly cooled, which can cause the optical element 10 to be cracked to shrink and generate tensile stress, guiding the cutting line 11 to crack along the preset path, which is more conducive to the decomposition of the optical element 10 to be cracked.

[0067] Exemplarily, long-term use can cause the hot knife 31 to undergo high-temperature oxidation and a decrease in hardness, reducing its service life. The method for decomposing the optical element in this embodiment can be operated in a nitrogen environment. In a nitrogen environment, the high-temperature oxidation reaction between the metal and oxygen can be blocked, reducing the oxidation rate of the hot knife 31, extending its service life, and ensuring the long-term and efficient operation of the equipment.

[0068] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, combinations with each other, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An optical component decomposition system, characterized in that, Comprising: A jig for containing the optical part to be cracked, the jig is provided with an opening which exposes the cutting line of the optical part to be cracked; A hot knife assembly, in the vertical direction, the hot knife assembly is located on the side of the jig away from the optical part to be cracked; the hot knife assembly includes a hot knife edge which is aligned with the cutting line and is spaced along the vertical direction.

2. The optical element decomposition system according to claim 1, characterized in that The hot knife assembly includes a hot knife which includes a side wall and a high-frequency coil wound around the periphery of the side wall.

3. The optical element decomposition system according to claim 2, wherein The side wall includes a connected side wall main body part and the hot knife edge, the hot knife edge is located on the side of the side wall main body part facing the jig, and the thickness of the hot knife edge is less than the thickness of the side wall main body part.

4. The optical element decomposition system according to claim 2, wherein The hot knife assembly further includes an adapter, the first end of the adapter is fixedly connected to the hot knife, and the shape of the second end of the adapter is adapted to the shape of the cutting line.

5. The optical element decomposition system according to claim 1, characterized in that The jig includes a jig main body part, a shielding part and at least one connecting rib, the jig main body part is located on the periphery of the shielding part, and the jig main body part and the shielding part are connected by the connecting rib.

6. The optical element decomposition system according to claim 5, wherein In the vertical direction, the thickness of the connecting rib is less than the thickness of the shielding part.

7. The optical element decomposition system according to claim 5, characterized in that, The at least one connecting rib includes a first connecting rib, a second connecting rib, a third connecting rib and a fourth connecting rib arranged in sequence, the first connecting rib is opposite to the third connecting rib, and the second connecting rib is opposite to the fourth connecting rib.

8. The optical element decomposition system according to claim 1, characterized in that, The hot knife edge is located on the side of the opening away from the optical part to be cracked; Or at least part of the hot knife edge is located in the opening.

9. Optical element decomposition method, characterized in that, Comprising: Placing the optical part to be cracked on the jig, and the opening of the jig exposes the cutting line of the optical part to be cracked; And placing the hot knife assembly in the vertical direction on the side of the jig away from the optical part to be cracked, the hot knife edge of the hot knife assembly is aligned with the cutting line and is spaced along the vertical direction; Heating the hot knife edge to a preset temperature.

10. The optical element decomposition method according to claim 9, wherein, After heating the hot knife edge to the preset temperature, it further includes: Immersing the optical part to be cracked after heating the cutting line in liquid cooling or gas cooling.

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