Focusing laser output head

Abstract

The utility model relates to a focusable laser output head comprising a tail end fixing module; one end of the middle adjustable module is connected with the tail end fixing module, the other end of the middle adjustable module is provided with a first adjusting part, and the first adjusting part is movably arranged in the full-length direction of the tail end fixing module; and the front-end adjustable module is arranged at the other end of the middle adjustable module, one end of the front-end adjustable module is fixedly connected with an adjusting part, the other end of the front-end adjustable module is provided with a lens group and a free lens, and the free lens is movably arranged in the full-length direction of the tail-end fixing module through a second adjusting part. According to the utility model, the middle adjustable module and the front-end adjustable module are arranged to freely select focusing to control the size of a light spot or adjust an emission angle, and the arrangement of the double adjustable modules enables the adjustment to be more accurate; compared with a traditional adjusting output head, the structure of the adjustable output head is more attractive.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of laser processing, in particular to an adjustable-focus laser output head. BACKGROUND

[0002] At present, an output head is generally added in front of a quartz end cap of a laser to focus a light beam. Since the laser beam generated by the laser itself has a certain divergence angle, the laser beam is diffused, and the divergence angle and the light spot of the laser beam output by the output head are different between different lasers with the same focal length. The difference leads to the difference in the focused light spot output by the overall equipment and further leads to the difference in processing, which cannot meet the demand of precise laser processing. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide an adjustable-focus laser output head to overcome the defect that the existing output head can only accurately focus the light beam output by a fixed laser.

[0004] An adjustable-focus laser output head comprises:

[0005] a tail-end fixed module;

[0006] a middle adjustable module, one end of which is connected with the tail-end fixed module, and the other end of which is provided with a first adjusting part, the first adjusting part being movably arranged along the length direction of the tail-end fixed module;

[0007] a front-end adjustable module, which is arranged at the other end of the middle adjustable module, one end of the front-end adjustable module being fixedly connected with the adjusting part, and the other end of the front-end adjustable module being provided with a lens group and a free lens, the free lens being movably arranged along the length direction of the tail-end fixed module through a second adjusting part.

[0008] As a preferred embodiment of the adjustable-focus laser output head, the tail-end fixed module comprises:

[0009] a tail-end outer sealing pipe, one end of which is sleeved with the outer circumferential side of the middle adjustable module;

[0010] a fiber fixed module, which is arranged in the tail-end outer sealing pipe and one end of which is sleeved with the inner circumferential side of the middle adjustable module.

[0011] As a preferred embodiment of the adjustable-focus laser output head, the fiber fixed module further comprises:

[0012] an optical fiber, one end of which is connected with the other end of the fiber fixed module through a quick connector, and the other end of which is connected with the other end of the tail-end outer sealing pipe through an armor and an armor connecting piece.

[0013] As a preferred embodiment of the adjustable-focus laser output head, the middle adjustable module comprises:

[0014] The connecting piece is provided with a first fixing hole at one end and a limiting slot at the other end along the length direction of the tail end fixing module;

[0015] The first adjusting part is sleeved on the outer circumferential side of the other end of the connecting piece along the length direction of the tail end fixing module; and,

[0016] The first threaded connection structure comprises a first external thread and a first internal thread, which are arranged at the connecting position of the connecting piece and the tail end outer sealing tube, respectively.

[0017] As a preferred adjustable focus laser output head in the utility model, the first adjusting part comprises:

[0018] The middle adjustable ring is provided with a pin at one end corresponding to the limiting slot, and is provided with a first ring groove around the circumference at the other end;

[0019] The middle adjustable outer sealing shell is rotationally connected with the first ring groove through the first machine screw; and,

[0020] The second threaded connection structure comprises a second external thread and a second internal thread, which are arranged at the connecting position of the connecting piece and the middle adjustable outer sealing shell, respectively.

[0021] As a preferred adjustable focus laser output head in the utility model, the middle adjustable outer sealing shell is provided with a first tightening cover and a spacing ring at two ends, respectively; and,

[0022] The third threaded connection structure comprises a third external thread and a third internal thread, which are arranged at the connecting position of the connecting piece and the first tightening cover, respectively;

[0023] The fourth threaded connection structure comprises a fourth external thread and a fourth internal thread, which are arranged at the connecting position of the middle adjustable ring and the spacing ring, respectively.

[0024] As a preferred adjustable focus laser output head in the utility model, the front end adjustable module comprises:

[0025] The lens barrel is sleeved with the inner circumferential side of the middle adjustable ring at one end, and the lens group is arranged at the other end of the lens barrel;

[0026] The second adjusting part is sleeved with the lens barrel at one end.

[0027] As a preferred adjustable focus laser output head in the utility model, the lens barrel is provided with a second ring groove around the circumference.

[0028] As a preferred adjustable focus laser output head in the utility model, the second adjusting part comprises:

[0029] The front end adjustable telescopic lens barrel is sleeved with the inner circumferential side of the other end of the lens barrel, and the free lens is arranged at one end of the front end adjustable telescopic lens barrel.

[0030] The front end adjustable telescopic lens barrel is sleeved with the inner circumferential side of the other end of the lens barrel, and the free lens is arranged at one end of the front end adjustable telescopic lens barrel.

[0031] The fifth threaded connection structure comprises a fifth external thread and a fifth internal thread, and the fifth external thread and the fifth internal thread are arranged at the mutual connection positions of the lens barrel and the middle adjustable ring, respectively.

[0032] The sixth threaded connection structure comprises a sixth external thread and a sixth internal thread, and the sixth external thread and the sixth internal thread are arranged at the mutual connection positions of the front end adjustable telescopic lens barrel and the front end adjustable outer shell.

[0033] As a preferred adjustable focus laser output head in the utility model, the other end of the front end adjustable telescopic lens barrel is arranged with a second tightening cover.

[0034] The seventh threaded connection structure comprises a seventh external thread and a seventh internal thread, and the seventh external thread and the seventh internal thread are arranged at the mutual connection positions of the front end adjustable telescopic lens barrel and the second tightening cover.

[0035] The utility model discloses the beneficial effects of:

[0036] Compared with the traditional adjustment output head, the structure in the utility model is more beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Figure 1 It is the cross-sectional structure schematic view of the output head in the embodiment of the present application.

[0039] Figure 2 It is the three-dimensional cross-sectional structure schematic view of the output head in the embodiment of the present application.

[0040] Explanation of reference signs:

[0041] 1000, tail end fixed module; 1100, tail end outer sealing tube; 1200, optical fiber fixing module; 1300, optical fiber; 1400, quick connector; 1500, armor and armor connector; 1600, quartz end cap;

[0042] 2000, middle adjustable module; 2100, connector; 2110, first fixed hole; 2120, limiting groove; 2200, first adjusting part; 2210, middle adjustable ring; 2211, pin; 2212, first ring groove; 2220, middle adjustable outer shell; 2230, second threaded connection structure; 2240, first machine screw; 2250, first tightening cover; 2260, spacer ring; 2270, third threaded connection structure; 2280, fourth threaded connection structure; 2300, first threaded connection structure;

[0043] 3000, front end adjustable module; 3100, lens barrel; 3110, second ring groove; 3200, second adjusting part; 3210, front end adjustable telescopic lens barrel; 3220, front end adjustable outer shell; 3230, fifth threaded connection structure; 3240, sixth threaded connection structure; 3300, second tightening cover; 3400, seventh threaded connection structure;

[0044] 4000, lens group;

[0045] 5000, free lens. DETAILED DESCRIPTION

[0046] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indications of the technical features indicated. Thus, the technical features defined with "first", "second", etc. can explicitly or implicitly include at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0049] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0051] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and are not the only embodiment.

[0052] Embodiment

[0053] The embodiment provides a tunable laser output head, which controls the spot size or adjusts the emission angle through a double tunable module, as shown in Figure 1 and Figure 2 As shown, it comprises a tail end fixed module 1000, a middle tunable module 2000, a front end tunable module 3000, a lens group 4000 and a free lens 5000.

[0054] The tail end fixed module 1000, the middle part adjustable module 2000 and the front end adjustable module 3000 are arranged in sequence, the tail end fixed module 1000 and the middle part adjustable module 2000 are detachably connected, the middle part adjustable module 2000 and the front end adjustable module 3000 are movably connected, the middle part adjustable module 2000 is provided with a first adjusting part 2200 at a connecting end of the middle part adjustable module 2000 and the front end adjustable module 3000, and the front end adjustable module 3000 can slide along the length direction of the tail end fixed module 1000 through the first adjusting part 2200; the front end adjustable module 3000 and the middle part adjustable module 2000 are movably connected, the lens group 4000 and the free lens 5000 are arranged at an end of the front end adjustable module 3000 away from the middle part adjustable module 2000, and the end is also provided with a second adjusting part 3200, and the free lens 5000 can slide along the length direction of the tail end fixed module 1000 through the second adjusting part 3200.

[0055] The tail end fixed module 1000 includes a tail end outer sealing pipe 1100, a fiber fixed module 1200 and an optical fiber 1300, one end of the tail end outer sealing pipe 1100 is sleeved with the outer peripheral side of the middle part adjustable module 2000, the fiber fixed module 1200 is arranged in the tail end outer sealing pipe 1100, one end of the fiber fixed module 1200 is provided with a quartz end cap 1600 and extends into the middle part adjustable module 2000 and is sleeved with the inner peripheral side of the middle part adjustable module 2000; one end of the optical fiber 1300 is connected with the other end of the fiber fixed module 1200 through a quick connector 1400, and the other end is connected with the other end of the tail end outer sealing pipe 1100 through an armor and an armor connecting piece 1500.

[0056] The middle part adjustable module 2000 includes a connecting piece 2100 and a first adjusting part 2200, one end of the connecting piece 2100 is connected with the tail end outer sealing pipe 1100 through a first threaded connection structure 2300, the first threaded connection structure 2300 includes a first outer thread and a first inner thread, and the first outer thread and the first inner thread are arranged at the mutual connecting position of the connecting piece 2100 and the tail end outer sealing pipe 1100 respectively; the first adjusting part 2200 is sleeved with the other end of the connecting piece 2100.

[0057] In the embodiment, one end of the connecting piece 2100 is provided with a first fixing hole 2110, the fiber fixed module 1200 is detachably connected with the connecting piece 2100 through a screw penetrating through the first fixing hole 2110, and the other end of the connecting piece 2100 is provided with a limiting groove 2120 along the length direction of the tail end fixed module 1000.

[0058] The first adjusting part 2200 includes a middle adjustable ring 2210 and a middle adjustable outer shell 2220. The middle adjustable ring 2210 is sleeved with the other end of the connecting piece 2100, and a pin 2211 is arranged at the corresponding position of the limiting groove 2120. A first ring groove 2212 is arranged around the circumference of the other end of the middle adjustable ring 2210. The middle adjustable outer shell 2220 is sleeved with the outer circumferential side of the connecting piece 2100 and the middle adjustable ring 2210. A second fixed hole is arranged on the middle adjustable outer shell 2220. The first machine screw 2240 is arranged through the second fixed hole and is rotationally connected with the first ring groove 2212. The connecting piece 2100 and the middle adjustable outer shell 2220 are connected through the second threaded connection structure 2230. The second threaded connection structure 2230 includes a second external thread and a second internal thread. The second external thread and the second internal thread are arranged at the connecting position of the connecting piece 2100 and the middle adjustable outer shell 2220.

[0059] The middle adjustable outer shell 2220 is spaced apart with a first tightening cover 2250 and a spacing ring 2260 at both ends. The first tightening cover 2250 is sleeved between the connecting piece 2100 and the middle adjustable outer shell 2220. The first tightening cover 2250 is connected with the connecting piece 2100 through the third threaded connection structure 2270. The third threaded connection structure 2270 includes a third external thread and a third internal thread. The third external thread and the third internal thread are arranged at the connecting position of the connecting piece 2100 and the first tightening cover 2250. The spacing ring 2260 is sleeved with the outer circumferential side of the middle adjustable ring 2210. The spacing ring 2260 is connected with the middle adjustable ring 2210 through the fourth threaded connection structure 2280. The fourth threaded connection structure 2280 includes a fourth external thread and a fourth internal thread. The fourth external thread and the fourth internal thread are arranged at the connecting position of the middle adjustable ring 2210 and the spacing ring 2260.

[0060] When the middle adjustable module 2000 is assembled, the middle adjustable ring 2210 is sleeved with the connecting piece 2100. The position is adjusted and the pin 2211 is inserted. It is ensured that the middle adjustable ring 2210 cannot rotate on the connecting piece 2100 but can slide forward and backward. Then the middle adjustable outer shell 2220 is sleeved from one side of the middle adjustable ring 2210 and is matched with the thread on the connecting piece 2100. The middle adjustable outer shell 2220 is rotated and tightened to the bottom and is fixed by the first machine screw 2240. The middle adjustable outer shell 2220 is not easily rotated. Finally, the first tightening cover 2250 is tightened from one side of the connecting piece 2100 by using the thread and glue. The spacing ring 2260 is tightened from the other side by using the external thread of the middle adjustable ring 2210 and glue. At this time, the tail of the connecting piece 2100 is held by hand. The middle adjustable outer shell 2220 is rotated. The spacing ring 2260, the middle adjustable outer shell 2220, the middle adjustable ring 2210, the first tightening cover 2250 and the pin 2211 are moved as a whole on the connecting piece 2100. During the assembly process, appropriate and appropriate lubricating grease is added to the thread and the position of the telescopic movement.

[0061] The front adjustable module 3000 comprises a lens barrel 3100 and a second adjusting part 3200, one end of the lens barrel 3100 is sleeved with the inner circumferential side of the middle adjustable ring 2210, and the lens group 4000 is arranged at the other end of the lens barrel 3100; one end of the second adjusting part 3200 is sleeved with the lens barrel 3100.

[0062] In the embodiment, the lens barrel 3100 is provided with a second ring groove 3110 around the circumference thereof.

[0063] The second adjusting part 3200 comprises a front adjustable telescopic lens barrel 3210 and a front adjustable outer envelope 3220, one end of the front adjustable telescopic lens barrel 3210 is sleeved with the inner circumferential side of the other end of the lens barrel 3100, and the free lens 5000 is arranged at one end of the front adjustable telescopic lens barrel 3210; the front adjustable outer envelope 3220 is sleeved with the outer circumferential side of the lens barrel 3100 and the front adjustable telescopic lens barrel 3210, and is rotationally connected with the second ring groove 3110 through a second machine screw.

[0064] In the embodiment, the lens barrel 3100 is connected with the middle adjustable ring 2210 through a fifth threaded connection structure 3230, which comprises a fifth external thread and a fifth internal thread, and the fifth external thread and the fifth internal thread are arranged at the mutual connection position of the lens barrel 3100 and the middle adjustable ring 2210, respectively. The front adjustable outer envelope 3220 is connected with the front adjustable telescopic lens barrel 3210 through a sixth threaded connection structure 3240, which comprises a sixth external thread and a sixth internal thread, and the sixth external thread and the sixth internal thread are arranged at the mutual connection position of the front adjustable telescopic lens barrel 3210 and the front adjustable outer envelope 3220, respectively.

[0065] In the embodiment, the other end of the front adjustable telescopic lens barrel 3210 is arranged with a second tightening cover 3300, and the two are connected through a seventh threaded connection structure 3400, the seventh threaded connection structure 3400 comprises a seventh external thread and a seventh internal thread, and the seventh external thread and the seventh internal thread are arranged at the mutual connection position of the front adjustable telescopic lens barrel 3210 and the second tightening cover 3300, respectively.

[0066] In the embodiment, the lens barrel 3100 and the front adjustable telescopic lens barrel 3210 need to have matching features for clamping to ensure that they can only move telescopically and cannot rotate relative to each other.

[0067] When the front adjustable module 3000 is assembled, the lens barrel 3100 and the front adjustable telescopic lens barrel 3210 are respectively assembled into the fixed lens group 4000 and the free lens 5000. During assembly, a compression ring and a rubber ring are used to fix and seal. The rubber ring is sleeved on the outside of the front adjustable telescopic lens barrel 3210 for sealing. Then, the lens barrel 3100 with the fixed lens group 4000 and the front adjustable telescopic lens barrel 3210 are aligned and combined together. Finally, the front adjustable outer shell 3220 is sleeved from one side of the lens barrel 3100 and is matched and rotated with the threads on the front adjustable telescopic lens barrel 3210 to be screwed to the bottom and be fixed by using the second machine screw. The front adjustable outer shell 3220 is not easily rotated, and the second tightening cover 3300 is tightened by using the threads and glue. At this time, the tail of the lens barrel 3100 is held, the front adjustable outer shell 3220 is rotated, and the free lens 5000 and the front adjustable telescopic lens barrel 3210 are moved together in the lens barrel 3100 to control the distance between the free lens 5000 and the fixed lens group 4000. During assembly, appropriate and appropriate lubricating grease is added to the threads and the telescopic moving position.

[0068] When the front adjustable module 3000 is connected with the middle adjustable module 2000, the tail of the lens barrel 3100 in the front adjustable module 3000 is sleeved with a rubber ring for sealing, and the threads are coated with glue and connected with the inner threads of the middle adjustable ring 2210 in the middle adjustable module 2000. At this time, the double adjustable module is assembled, and after the glue is cured, the machine screw is loosened, the middle adjustable outer shell 2220 is rotated, and the front adjustable structure, the spacer ring 2260, the middle adjustable outer shell 2220, the middle adjustable ring 2210, the first tightening cover 2250, and the pin 2211 are moved together on the connecting piece 2100 to control the distance between the lens group 4000 and the free lens 5000 and the middle quartz end cap 1600.

[0069] When the laser output head is working, the laser beam is transmitted through the optical fiber 1300, and the quartz end cap 1600 is needed to amplify and reduce the energy density of the output end, and then the lens combination is used to control the output of the beam to be collimated light. First, rotate the front adjustable outer shell 3220 and the middle adjustable outer shell 2220 to the appropriate position, preferably at the middle value of the adjustable range, and tighten the machine screw to prevent running during the adjustment process. Put the prepared quartz end cap 1600, optical fiber fixing module 1200 and optical fiber 1300 into the connector 2100, connect the light source and assist through the beam quality analyzer, control the position of the quartz end cap 1600, optical fiber fixing module 1200 and optical fiber 1300 as a whole, adjust the output standard collimated beam, and then use the first machine screw 2240 to fix the position of the optical fiber fixing module 1200, and then use the glue to flow into the gap between the optical fiber fixing module 1200 and the connector 2100 to solidify, so as to ensure sealing and stability.

[0070] When the output head is blocked, the quick connector 1400 is sleeved into the optical fiber fixing module 1200 along the optical fiber 1300, and the Teflon tube is sleeved into the quick connector 1400 for protecting the optical fiber 1300. The tail end outer sealing tube 1100 is fixed with glue and screwed with the connector 2100, and then screwed tightly. The armor and armor connector 1500 are connected to the tail end outer sealing tube 1100, and then fixed with glue and screw, and the whole product is completed.

[0071] The technical features of the above-described embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present application.

[0072] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A tunable laser output head, characterized by, The utility model provides a kind of optical fiber fixing module, comprising: Tail end fixed module; Middle adjustable module, one end is connected with tail end fixed module, the other end is equipped with first adjusting part, the first adjusting part is movably arranged along the length direction of tail end fixed module; Front adjustable module, it is equipped in the other end of middle adjustable module, one end of front adjustable module is fixedly connected with adjusting part, and the other end is equipped with lens group and free lens, and the free lens is movably arranged along the length direction of tail end fixed module by second adjusting part.

2. The tunable laser output head of claim 1, wherein, The tail end fixed module comprises: Tail end outer sealing pipe, one end is sleeved with the outer circumferential side of middle adjustable module; Optical fiber fixed module, it is equipped in tail end outer sealing pipe, one end is sleeved with the inner circumferential side of middle adjustable module.

3. The tunable laser output head of claim 2, wherein, The optical fiber fixed module further comprises: Optical fiber, one end is connected with the other end of optical fiber fixed module by quick connector, and the other end is connected with the other end of tail end outer sealing pipe by armor and armor connector.

4. The tunable laser output head of claim 1, wherein, The middle adjustable module comprises: Connector, one end is equipped with first fixed hole, the other end is equipped with limiting slot along the length direction of tail end fixed module; First adjusting part, the outer circumferential side of the other end of connector is sleeved with first adjusting part along the length direction of tail end fixed module;And, First threaded connection structure, including first external thread and first internal thread, the first external thread and the first internal thread are respectively arranged at the mutual connection place of connector and tail end outer sealing pipe.

5. The tunable laser output head of claim 4, wherein, The first adjusting part comprises: Middle adjustable ring, one end is equipped with pin at the corresponding place of limiting slot, and the other end is equipped with first ring groove around its circumference; Middle adjustable outer sealing shell, rotationally connected with first ring groove by first machine screw;And, Second threaded connection structure, including second external thread and second internal thread, the second external thread and the second internal thread are respectively arranged at the mutual connection place of connector and middle adjustable outer sealing shell.

6. The tunable laser output head of claim 5, wherein, The two ends of middle adjustable outer sealing shell are respectively spaced apart and equipped with first tightening cover and spacer ring;And, Third threaded connection structure, including third external thread and third internal thread, the third external thread and the third internal thread are respectively arranged at the mutual connection place of connector and first tightening cover; Fourth threaded connection structure, including fourth external thread and fourth internal thread, the fourth external thread and the fourth internal thread are respectively arranged at the mutual connection place of middle adjustable ring and spacer ring.

7. The tunable laser output head of claim 1, wherein, The front adjustable module comprises: Lens barrel, one end is sleeved with the inner circumferential side of middle adjustable ring, and the lens group is equipped in the other end of lens barrel; Second adjusting part, one end is sleeved with lens barrel.

8. The tunable laser output head of claim 7, wherein, The lens barrel is equipped with second ring groove around its circumference.

9. The tunable laser output head of claim 7, wherein, The second adjusting part comprises: Front adjustable telescopic lens barrel, one end is sleeved with the inner circumferential side of the other end of lens barrel, and the free lens is equipped in one end of front adjustable telescopic lens barrel; Front adjustable outer sealing shell, it is sleeved with the outer circumferential side of front adjustable module, rotationally connected with second ring groove by second machine screw;And, Fifth threaded connection structure, including fifth external thread and fifth internal thread, the fifth external thread and the fifth internal thread are respectively arranged at the mutual connection place of lens barrel and middle adjustable ring; Sixth threaded connection structure, including sixth external thread and sixth internal thread, the sixth external thread and the sixth internal thread are respectively arranged at the mutual connection place of front adjustable telescopic lens barrel and front adjustable outer sealing shell.

10. The tunable laser output head of claim 9, wherein, The other end of the front-end adjustable telescopic lens barrel is arranged with a second screw cover; and The seventh threaded connection structure comprises a seventh outer thread and a seventh inner thread, which are respectively arranged at the mutual connection position of the front-end adjustable telescopic lens barrel and the second screw cover.

Images