Laser output head and laser delivery device

Abstract

The application discloses a laser output head and a laser transmission device. The laser output head comprises a shell and a lens group. The shell extends along a first direction. One end of the shell is used for connecting an optical cable. The lens group is arranged at the other end of the shell. The lens group comprises at least two lenses. At least one lens is arranged as a movable lens. The movable lens is movably arranged along the first direction. The spacing between the two lenses can be adjusted. The spacing between the two lenses is adjusted through the movement of the movable lens. The combined focal length of the two lenses is adjusted. The spot size output by the laser output head is changed. In this way, the lens group is arranged. When the divergence angle of the laser changes, the spot size output by the laser output head is adjusted through the adjustment of the spacing between the two lenses. The laser output head can be adapted to lasers with different divergence angles. The accurate control of the spot output by the laser output head is realized. Therefore, the spot size output by the laser output head meets the requirements of precise laser processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser processing technology, in particular to a laser output head and a laser transmission device. BACKGROUND

[0002] The technology of processing the surface of metal material by laser belongs to the advanced manufacturing technology combining laser technology and processing technology, which has developed rapidly in recent years. At present, the laser output head generally adds a beam collimation system and a focusing system in front of the quartz end cap to collimate and focus the light beam. However, for precise laser processing, the input end of the laser output head is directly connected with the optical module inside the laser, and the divergence angles of different optical modules are different. For laser output heads with the same focal length, the collimated light spots output by different lasers are different. Since the internal structure of the optical module cannot be adjusted again after the optical module is formed, the size of the light spot output by the laser output head is easy to be out of tolerance, which cannot meet the demand of precise laser processing. SUMMARY

[0003] The main purpose of the present application is to provide a laser output head and a laser transmission device, which aims to solve the problem that the existing laser output head cannot adapt to different lasers.

[0004] To achieve the above purpose, the present application provides a laser output head, comprising:

[0005] a housing extending along a first direction, one end of the housing being used for connecting an optical cable; and

[0006] a lens group arranged at the other end of the housing, the lens group comprising at least two lenses, at least one of the lenses being arranged as a movable lens, the movable lens being movably arranged along the first direction so that the distance between the two lenses can be adjusted.

[0007] Optionally, the two lenses comprise a fixed lens and a movable lens.

[0008] The housing comprises:

[0009] a fixed lens barrel, the optical cable being arranged at one end of the fixed lens barrel, and the fixed lens being arranged at the other end of the fixed lens barrel;

[0010] a movable lens barrel movably sleeved on the outer periphery of the fixed lens barrel along the first direction, and the movable lens being arranged in the movable lens barrel; and

[0011] a first position adjusting structure arranged between the fixed lens barrel and the movable lens barrel, and used for adjusting the position of the movable lens barrel.

[0012] Optionally, the first position adjusting structure comprises:

[0013] a first adjusting sleeve having opposite first fixed end and first adjusting end, the first fixed end is arranged on the fixed lens barrel, and the first adjusting end is rotatably sleeved on the outer circumferential side of the movable lens barrel; and

[0014] a first threaded connection structure including a first inner thread and a first outer thread matched with each other, the first inner thread and the first outer thread are arranged on the first adjusting end and the movable lens barrel respectively.

[0015] Optionally, the first fixed end is provided with a first through hole, and the first position adjusting structure further includes a first fixing screw penetrating through the first through hole and abutting against the fixed lens barrel; and / or,

[0016] the movable lens barrel is provided with a second through hole, and the first position adjusting structure further includes a second fixing screw penetrating through the second through hole and abutting against the fixed lens barrel.

[0017] Optionally, the fixed lens barrel includes a barrel body and a locking ring sleeved on the barrel body;

[0018] the fixed lens is arranged between the barrel body and the locking ring;

[0019] the movable lens barrel is sleeved on the outer sidewall of the barrel body.

[0020] Optionally, the laser output head further includes a window piece arranged in the movable lens barrel, and the window piece is arranged on the side of the movable lens away from the fixed lens.

[0021] Optionally, the optical cable is movably mounted on the shell along the first direction.

[0022] Optionally, the shell includes a fixed lens barrel;

[0023] the laser output head further includes:

[0024] an optical cable mounting sleeve movably mounted on the fixed lens barrel along the first direction, the optical cable mounting sleeve is used for mounting the optical cable; and

[0025] a second position adjusting structure arranged between the fixed lens barrel and the optical cable mounting sleeve and used for adjusting the position of the optical cable mounting sleeve.

[0026] Optionally, the second position adjusting structure includes:

[0027] a second adjusting sleeve having opposite second fixed end and second adjusting end, the second fixed end is arranged in the fixed lens barrel, and the second adjusting end is rotatably sleeved on the outer circumferential side of the optical cable mounting sleeve; and

[0028] A second threaded connection structure includes a second inner thread and a second outer thread that are matched with each other, and the second inner thread and the second outer thread are arranged on the second adjusting end and the optical cable mounting sleeve respectively.

[0029] Optionally, the fixed lens barrel is provided with a third through hole, and the second position adjusting structure further includes a third fixed screw penetrating through the third through hole and abutting against the second fixed end.

[0030] The fixed lens barrel is provided with a fourth through hole, and the second position adjusting structure further includes a fourth fixed screw penetrating through the fourth through hole and abutting against the optical cable mounting sleeve.

[0031] Optionally, the optical cable includes an optical fiber and an end cap connected with the optical fiber.

[0032] The optical cable mounting sleeve includes:

[0033] A fixed sleeve is arranged in the second adjusting sleeve.

[0034] An end cap mounting sleeve is arranged in the fixed lens barrel at one end and arranged in the fixed sleeve at the other end to fix the end cap.

[0035] An optical fiber mounting sleeve is arranged in the fixed sleeve at one end and arranged in the end cap mounting sleeve at the other end to fix the optical fiber.

[0036] The second threaded connection structure is arranged between the end cap mounting sleeve and the second adjusting sleeve.

[0037] Optionally, the optical cable mounting sleeve further includes an annular protrusion and an annular groove that are matched and fixed, and one of the annular protrusion and the annular groove is arranged on the end cap mounting sleeve, and the other is arranged on the fixed sleeve.

[0038] In addition, the application also provides a laser transmission device, and the laser transmission device includes the laser output head.

[0039] In the technical scheme of the application, the shell is arranged to facilitate the connection with the optical cable and the arrangement of the lens group, and the interval between the two lenses is adjusted through the movement of the movable lens, and the combined focal length of the two lenses is adjusted to change the spot size output by the laser output head. In this way, the lens group is arranged to adjust the spot size output by the laser output head by adjusting the interval between the two lenses when the divergence angle of the laser changes, so that the laser output head can adapt to laser with different divergence angles, the spot output by the laser output head is accurately controlled, and the spot size output meets the requirements of precise laser processing. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the drawings shown without creative labor.

[0041] Figure 1 A cross-sectional structure schematic diagram of an embodiment of the laser output head provided by the present application;

[0042] Figure 2 A front view structure schematic diagram of the laser output head in Figure 1

[0043] Figure 3 A local enlarged structure schematic diagram of A in Figure 1

[0044] Explanation of the reference signs:

[0045] Reference Name Reference Name 100 Laser output head 3 Optical cable mounting sleeve 1 Housing 31 Fixing sleeve 11 Fixing lens barrel 32 End cap mounting sleeve 111 Barrel body 33 Optical fiber mounting sleeve 112 Locking ring 4 Second position adjustment structure 12 Movable lens barrel 41 Second adjusting sleeve 13 First position adjustment structure 42 Third fixing screw 131 First adjusting sleeve 5 Window sheet 132 First fixing screw 6 Armored sleeve 133 Second fixing screw 7 Optical cable 2 Lens group 71 Optical fiber 21 Fixed lens 72 End cap 22 Movable lens

[0046] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] It should be noted that if the embodiments of the present application involve directionality indication, the directionality indication is only used to explain the relative position relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directionality indication also changes accordingly.

[0049] ​​In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0050] The technology of processing the surface of metal material by laser belongs to the advanced manufacturing technology combining laser technology and processing technology, which has developed very rapidly in recent years. At present, the laser output head generally adds a beam collimation system and a focusing system in front of the quartz end cap to collimate and focus the light beam. However, for precise laser processing, the input end of the laser output head is directly connected with the optical module inside the laser, and the divergence angles of different optical modules are different. For laser output heads with the same focal length, there are differences in the collimated light spots output by different lasers. Because the internal structure of the optical module cannot be adjusted again after the optical module is formed, the size of the light spot output by the laser output head is easy to exceed the tolerance, which cannot meet the demand of precise laser processing.

[0051] In view of this, the present application provides a laser output head, which aims to solve the problem that the existing laser output head cannot adapt to different lasers. Among them, Figures 1 to 3 The structure diagram of an embodiment of the laser output head provided by the present application.

[0052] Please refer to Figures 1 to 3 , the laser output head 100 includes a shell 1 and a lens group 2, the shell 1 extends along a first direction, one end of the shell 1 is used for connecting an optical cable 7, the lens group 2 is arranged at the other end of the shell 1, the lens group 2 includes at least two lenses, at least one of the lenses is arranged as a movable lens 22, the movable lens 22 is movably arranged along the first direction, so that the distance between the two lenses can be adjusted.

[0053] The technical scheme of the present application, by setting the shell 1, is convenient for connecting with the optical cable 7, and is convenient for setting the lens group 2, and by the movement of the movable lens 22, the interval between the two lenses is adjusted, and the combined focal length of the two lenses is adjusted, so as to change the spot size output by the laser output head 100. By setting the lens group 2, when the divergence angle of the laser changes, the interval between the two lenses is adjusted to adjust the spot size output by the laser output head 100, so that the laser output head 100 can adapt to lasers with different divergence angles, and the spot output by the laser output head 100 is accurately controlled, so that the output spot size meets the requirements of precision laser processing. It can be understood that the first direction can be horizontal, or upward and downward, and the present application does not limit this.

[0054] It should be noted that the focal length of the lens group 2 is determined by the focal length of the two lenses and the relative position between the two lenses. The combined focal length of the lens group 2 is: 1 / f = 1 / f1 + 1 / f2 - 1 / (f1*f2), f is the combined lens focal length, f1 and f2 are the focal lengths of the two lenses, and d is the interval between the two lenses. In this way, under the condition that the two lens groups 2 remain unchanged, the combined focal length of the lens group 2 can be adjusted by adjusting the distance d between the two lenses.

[0055] In order to adjust the interval between the two lenses, in the present embodiment, the two lenses include a fixed lens 21 and a movable lens 22, the shell 1 includes a fixed lens barrel 11, a movable lens barrel 12 and a first position adjusting structure 13, the optical cable 7 is arranged at one end of the fixed lens barrel 11, the fixed lens 21 is arranged at the other end of the fixed lens barrel 11, the movable lens barrel 12 is movably arranged on the outer circumferential side of the fixed lens barrel 11 along the first direction, the movable lens 22 is arranged in the movable lens barrel 12, and the first position adjusting structure 13 is arranged between the fixed lens barrel 11 and the movable lens barrel 12 to adjust the position of the movable lens barrel 12. In this way, by moving the movable lens barrel 12 along the first direction, the movable lens 22 is moved closer to or away from the fixed lens 21, so as to adjust the interval between the fixed lens 21 and the movable lens 22, thereby adjusting the combined focal length of the lens group 2, so as to adjust the spot size output by the laser output head 100. Of course, in other embodiments, the shell 1 includes a fixed lens barrel 11 and two movable lens barrels 12 movably mounted on the fixed lens barrel 11 along the first direction, and the two lenses are arranged in the two movable lens barrels 12 respectively.

[0056] Further, in order to continuously adjust the interval between the two lenses, in the embodiment, the first position adjusting structure 13 comprises a first adjusting sleeve 131 and a first threaded connecting structure. The first adjusting sleeve 131 has opposite first fixed end and first adjusting end. The first fixed end is arranged on the fixed lens barrel 11, and the first adjusting end is rotatably sleeved on the outer circumferential side of the movable lens barrel 12. The first threaded connecting structure comprises a first inner thread and a first outer thread which are matched with each other. The first inner thread and the first outer thread are arranged on the first adjusting end and the movable lens barrel 12 respectively. Thus, by arranging the first threaded connecting structure, the movable lens barrel 12 is driven to move along the first direction when the first adjusting sleeve 131 is rotated, so as to adjust the interval between the two lenses. Of course, in other embodiments, the movable lens barrel 12 is provided with a first mounting hole, and the first position adjusting structure 13 comprises an adjusting bolt which is arranged through the first mounting hole and abuts against the fixed lens barrel 11. Thus, after the movable lens barrel 12 is adjusted to the corresponding position, the movable lens barrel 12 is locked and fixed on the fixed lens barrel 11.

[0057] When the position of the movable lens barrel 12 is adjusted, in order to prevent the movable lens barrel 12 from continuing to move due to the rotation of the first adjusting sleeve 131, in an embodiment, the first fixed end is provided with a first through hole, and the first position adjusting structure 13 further comprises a first fixing screw 132 which is arranged through the first through hole and abuts against the fixed lens barrel 11. Thus, by arranging the first fixing screw 132, the first adjusting sleeve 131 is fixed on the fixed lens barrel 11, and the movable lens barrel 12 is fixed on the fixed lens barrel 11, so as to prevent the movable lens barrel 12 from continuing to move after the position of the movable lens barrel 12 is adjusted.

[0058] In another embodiment, the movable lens barrel 12 is provided with a second through hole, and the first position adjusting structure 13 further comprises a second fixing screw 133 which is arranged through the second through hole and abuts against the fixed lens barrel 11. Thus, by arranging the second fixing screw 133, the movable lens barrel 12 is fixed on the fixed lens barrel 11, so as to prevent the movable lens barrel 12 from continuing to move after the position of the movable lens barrel 12 is adjusted.

[0059] Theoretically, when one of the first adjusting sleeve 131 and the movable lens barrel 12 is fixed to the fixed lens barrel 11, the other is locked to the fixed lens barrel 11 through the first threaded connection structure, but if the torsion is too large, the first adjusting sleeve 131 and the movable lens barrel 12 are prone to slip. Based on this, in the embodiment, the first fixed end is provided with a first through hole, and the first position adjusting structure 13 further includes a first fixing screw 132 penetrating the first through hole and abutting against the fixed lens barrel 11. The movable lens barrel 12 is provided with a second through hole, and the first position adjusting structure 13 further includes a second fixing screw 133 penetrating the second through hole and abutting against the fixed lens barrel 11. In this way, by arranging the first fixing screw 132 and the second fixing screw 133, the first adjusting sleeve 131 and the movable lens barrel 12 are fixed to the fixed lens barrel 11 at the same time, so as to avoid the slip between the first adjusting sleeve 131 and the movable lens barrel 12.

[0060] In order to fix the fixed lens 21 to the fixed lens barrel 11, in the embodiment, the fixed lens barrel 11 includes a barrel body 111 and a locking ring 112 sleeved on the barrel body 111, the fixed lens 21 is arranged between the barrel body 111 and the locking ring 112, and the movable lens barrel 12 is sleeved on the outer side wall of the barrel body 111. In this way, by arranging the locking ring 112, the fixed lens 21 can be detachably installed on the fixed lens barrel 11, so as to facilitate the subsequent replacement of the fixed lens 21.

[0061] In order to protect the movable lens 22, in the embodiment, the laser output head 100 further includes a window sheet 5 arranged in the movable lens barrel 12. The window sheet 5 is arranged on the side of the movable lens 22 away from the fixed lens 21. In this way, by arranging the window sheet 5, the movable lens barrel 12 is closed, so as to avoid damage to the lens group 2 by external force. Further, the window sheet 5 is detachably installed on the movable lens barrel 12

[0062] The optical cable 7 can be fixedly installed on the shell 1, or movably installed on the shell 1, etc., and the present application does not limit this. However, when the combined focal length of the lens group 2 changes, the distance between the virtual light exit point of the laser output head 100 and the center of the lens group 2 also changes, which can cause the light beam output by the optical cable 7 to be unable to be collimated and output. Therefore, in this embodiment, the optical cable 7 is movably installed on the shell 1 along the first direction. In this way, by moving the optical cable 7, the optical cable 7 is moved closer to or farther away from the fixed lens 21, so as to adjust the distance between the fixed lens 21 and the optical cable 7, so that the distance between the optical cable 7 and the fixed lens 21 can change with the change of the lens group 2, so that the optical cable 7 is always on the virtual light exit point of the laser output head 100, thereby ensuring that the light beam output by the optical cable 7 is collimated into the fixed lens 21.

[0063] In order to adjust the distance between the optical cable 7 and the fixed lens 21, in this embodiment, the shell 1 comprises a fixed lens barrel 11, and the laser output head 100 further comprises an optical cable mounting sleeve 3 and a second position adjusting structure 4. The optical cable mounting sleeve 3 is movably installed on the fixed lens barrel 11 along the first direction, and the optical cable mounting sleeve 3 is used to mount the optical cable 7. The second position adjusting structure 4 is arranged between the fixed lens barrel 11 and the optical cable mounting sleeve 3, and is used to adjust the position of the optical cable mounting sleeve 3. In this way, by arranging the optical cable mounting sleeve 3 to mount the optical cable 7 on the fixed lens barrel 11, and by arranging the second position adjusting structure 4 to adjust the distance between the optical cable 7 and the fixed lens 21, the optical cable 7 is on the virtual light exit point of the laser output head 100, so that the distance between the optical cable 7 and the fixed lens 21 can adapt to the change of the focal length of the lens group 2.

[0064] Further, the second position adjusting structure 4 comprises a second adjusting sleeve 41 and a second threaded connecting structure. The second adjusting sleeve 41 has opposite second fixed end and second adjusting end. The second fixed end is arranged in the fixed lens barrel 11, and the second adjusting end is arranged on the outer periphery of the optical cable mounting sleeve 3. The second threaded connecting structure comprises a second inner thread and a second outer thread. The second inner thread and the second outer thread are arranged on the second adjusting end and the optical cable mounting sleeve 3 respectively. Thus, by arranging the second threaded connecting structure, the optical cable mounting sleeve 3 is driven to move along the first direction when the second adjusting sleeve 41 is rotated, so as to adjust the distance between the optical cable 7 and the fixed lens 21. Of course, in other embodiments, the fixed lens barrel 11 is provided with a second mounting hole, and the second position adjusting structure 4 comprises an adjusting bolt arranged in the second mounting hole and abutting against the optical cable mounting sleeve 3. Thus, after the optical cable mounting sleeve 3 is adjusted to the corresponding position, the optical cable mounting sleeve 3 is locked and fixed on the fixed lens barrel 11.

[0065] When the position of the optical cable mounting sleeve 3 is adjusted, in order to prevent the optical cable mounting sleeve 3 from continuing to move due to the rotation of the second adjusting sleeve 41, in an embodiment, the fixed lens barrel 11 is provided with a third through hole, and the second position adjusting structure 4 further comprises a third fixing screw 42 arranged in the third through hole and abutting against the second fixed end. Thus, by arranging the third fixing screw 42, the second adjusting sleeve 41 is fixed on the fixed lens barrel 11, and the optical cable mounting sleeve 3 is fixed on the fixed lens barrel 11, so as to prevent the optical cable mounting sleeve 3 from continuing to move after the position of the optical cable mounting sleeve 3 is adjusted.

[0066] In another embodiment, the fixed lens barrel 11 is provided with a fourth through hole, and the second position adjusting structure 4 further comprises a fourth fixing screw arranged in the fourth through hole and abutting against the optical cable mounting sleeve 3. Thus, by arranging the fourth fixing screw, the optical cable mounting sleeve 3 is fixed on the fixed lens barrel 11, so as to prevent the movable lens barrel 12 from continuing to move after the position of the optical cable mounting sleeve 3 is adjusted.

[0067] Theoretically, when one of the second adjusting sleeve 41 and the optical cable mounting sleeve 3 is fixed to the fixed lens barrel 11, the other is locked to the fixed lens barrel 11 through the second threaded connection structure. However, if the torsion is too large, the second adjusting sleeve 41 and the optical cable mounting sleeve 3 are prone to slip. Therefore, in the embodiment, the fixed lens barrel 11 is provided with a third through hole, and the second position adjusting structure 4 further includes a third fixing screw 42 penetrating the third through hole and abutting against the second fixed end. The fixed lens barrel 11 is provided with a fourth through hole, and the second position adjusting structure 4 further includes a fourth fixing screw penetrating the fourth through hole and abutting against the optical cable mounting sleeve 3. In this way, by arranging the third fixing screw 42 and the fourth fixing screw, the second adjusting sleeve 41 and the optical cable mounting sleeve 3 are simultaneously fixed to the fixed lens barrel 11, thereby avoiding the slip between the second adjusting sleeve 41 and the optical cable mounting sleeve 3.

[0068] In order to mount the optical cable 7 to the fixed lens barrel 11, in the embodiment, the optical cable 7 includes an optical fiber 71 and an end cap 72 connected to the optical fiber 71. The optical cable mounting sleeve 3 includes a fixed sleeve 31, an end cap mounting sleeve 32, and an optical fiber mounting sleeve 33. The fixed sleeve 31 is arranged in the second adjusting sleeve 41. One end of the end cap mounting sleeve 32 is arranged in the fixed lens barrel 11, and the other end is arranged in the fixed sleeve 31 to fix the end cap 72. One end of the optical fiber mounting sleeve 33 is arranged in the fixed sleeve 31, and the other end is arranged in the end cap mounting sleeve 32 to fix the optical fiber 71. The second threaded connection structure is arranged between the end cap mounting sleeve 32 and the second adjusting sleeve 41. When the second adjusting sleeve 41 is rotated, the end cap mounting sleeve 32 moves in the first direction to adjust the distance between the end cap 72 and the fixed lens 21. In this way, by arranging the end cap mounting sleeve 32, the end cap 72 is mounted to the fixed lens barrel 11, and by arranging the optical fiber mounting sleeve 33, the optical fiber 71 is fixed to the end cap mounting sleeve 32. The end cap 72 and the optical fiber 71 are simultaneously fixed to prevent the optical fiber 71 from being twisted when the optical cable mounting sleeve 3 moves. The optical fiber 71 and the end cap 72 move synchronously relative to the fixed lens barrel 11. At the same time, by arranging the fixed sleeve 31, the end cap mounting sleeve 32 and the optical fiber mounting sleeve 33 are simultaneously mounted in the second adjusting sleeve 41, thereby helping to protect the optical cable 7.

[0069] It should be noted that the optical fiber mounting sleeve 33 can be riveted to the end cap mounting sleeve 32, the optical fiber mounting sleeve 33 can also be screwed to the end cap mounting sleeve 32, etc., and the present application does not limit this, specifically, in the present embodiment, the optical fiber mounting sleeve 33 is detachably mounted to the end cap mounting sleeve 32.

[0070] In order to protect the optical fiber 71, in the present embodiment, the optical cable 7 further comprises an armored sleeve 6 sleeved outside the optical fiber 71, so as to protect the optical fiber 71, further, one end of the armored sleeve 6 is mounted in the fixing sleeve.

[0071] In order to make the fixing sleeve 31 and the end cap mounting sleeve 32 move synchronously, the optical cable mounting sleeve 3 further comprises a ring-shaped convex rib and a ring-shaped groove matched and fixed with each other, one of the ring-shaped convex rib and the ring-shaped groove is arranged on the end cap mounting sleeve 32, and the other is arranged on the fixing sleeve 31, thus, through the ring-shaped convex rib and the ring-shaped groove matched with each other, the end cap mounting sleeve 32 is mounted in the fixing sleeve 31, so as to prevent the end cap mounting sleeve 32 from moving along the axial direction, so as to make the fixing sleeve 31 and the end cap mounting sleeve 32 move synchronously.

[0072] In addition, it should be noted that the structure of the laser output head 100 in the laser transmission device can refer to the above-mentioned embodiments of the laser output head 100, which will not be repeated here; since the above-mentioned laser output head 100 is used in the laser transmission device provided by the present application, the embodiments of the laser transmission device provided by the present application include all the technical solutions of all the embodiments of the above-mentioned laser output head 100, and the technical effects achieved are also completely the same, which will not be repeated here.

[0073] The above-mentioned is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made under the concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A laser output head characterized by comprising: The application relates to a laser output head. The laser output head comprises: a shell extending along a first direction, one end of the shell being used for connecting an optical cable; and a lens group arranged at the other end of the shell, the lens group comprising at least two lenses, at least one of the lenses being arranged as a movable lens, the movable lens being movably arranged along the first direction so that the spacing between the two lenses can be adjusted. The two lenses comprise a fixed lens and a movable lens. The shell comprises: a fixed lens barrel, the optical cable being arranged at one end of the fixed lens barrel, and the fixed lens being arranged at the other end of the fixed lens barrel; a movable lens barrel movably sleeved on the outer periphery of the fixed lens barrel along the first direction, and the movable lens being arranged in the movable lens barrel; and a first position adjusting structure arranged between the fixed lens barrel and the movable lens barrel and used for adjusting the position of the movable lens barrel. The first position adjusting structure comprises: a first adjusting sleeve having opposite first fixed and adjusting ends, the first fixed end being arranged on the fixed lens barrel, and the first adjusting end being rotatably sleeved on the outer periphery of the movable lens barrel; and a first threaded connection structure comprising a first inner thread and a first outer thread matched with each other, the first inner thread and the first outer thread being arranged on the first adjusting end and the movable lens barrel respectively. The first fixed end is provided with a first through hole, and the first position adjusting structure further comprises a first fixed screw penetrating through the first through hole and abutting against the fixed lens barrel. The movable lens barrel is provided with a second through hole, and the first position adjusting structure further comprises a second fixed screw penetrating through the second through hole and abutting against the fixed lens barrel. The optical cable is movably arranged in the shell along the first direction. The shell comprises a fixed lens barrel. The laser output head further comprises: an optical cable mounting sleeve movably arranged in the fixed lens barrel along the first direction, the optical cable mounting sleeve being used for mounting the optical cable; and a second position adjusting structure arranged between the fixed lens barrel and the optical cable mounting sleeve and used for adjusting the position of the optical cable mounting sleeve. The second position adjusting structure comprises: a second adjusting sleeve having opposite second fixed and adjusting ends, the second fixed end being arranged in the fixed lens barrel, and the second adjusting end being rotatably sleeved on the outer periphery of the optical cable mounting sleeve; and a second threaded connection structure comprising a second inner thread and a second outer thread matched with each other, the second inner thread and the second outer thread being arranged on the second adjusting end and the optical cable mounting sleeve respectively. The fixed lens barrel is provided with a third through hole, and the second position adjusting structure further comprises a third fixed screw penetrating through the third through hole and abutting against the second fixed end; and / or The fixed lens barrel is provided with a fourth through hole, and the second position adjusting structure further comprises a fourth fixed screw penetrating through the fourth through hole and abutting against the optical cable mounting sleeve.

2. The laser output head according to claim 1, wherein The fixed lens barrel comprises a barrel body and a locking ring sleeved on the barrel body. The fixed lens is arranged between the barrel body and the locking ring. The movable lens barrel is sleeved on the outer sidewall of the barrel body.

3. The laser output head of claim 1, wherein The laser output head further comprises a window arranged in the movable lens barrel, the window being arranged on a side of the movable lens barrel away from the fixed lens.

4. The laser output head of claim 1, wherein The optical cable comprises an optical fiber and an end cap connected to the optical fiber. The optical cable mounting sleeve comprises: a fixed sleeve arranged in the second adjusting sleeve; an end cap mounting sleeve, one end of which is arranged in the fixed lens barrel and the other end of which is arranged in the fixed sleeve, for fixing the end cap; and an optical fiber mounting sleeve, one end of which is arranged in the fixed sleeve and the other end of which is arranged in the end cap mounting sleeve, for fixing the optical fiber. The second threaded connection structure is arranged between the end cap mounting sleeve and the second adjusting sleeve.

5. The laser output head of claim 4, wherein The optical cable mounting sleeve further comprises an annular protrusion and an annular groove which are fixed to each other, one of the annular protrusion and the annular groove being arranged in the end cap mounting sleeve and the other being arranged in the fixed sleeve.

6. A laser delivery device, characterized by, The laser output head comprises the laser output head according to any one of claims 1 to 5.

Images