A high power lens assembly for fiber optic quartz scanning

Abstract

The application discloses a high-power lens assembly for optical fiber quartz scanning, and particularly relates to a high-power lens assembly, which comprises mutually butted lens barrels and reference barrels, the lens barrels are provided with lenses, and further comprises a calibration assembly which comprises calibration rods and reference rods arranged in the lens barrels and the reference barrels respectively in odd polygonal shapes, hard gaskets are arranged on the lenses and are perpendicularly clamped on the calibration rods, and the reference rods are coaxially fixed with the calibration rods so that the lenses are coaxial with the axes of the reference barrels. The calibration rods are arranged in the lens barrels, so that when the lens barrels and the reference barrels are butted, the calibration rods and the reference rods are butted to fix the two lens barrels, and the hard gaskets for fixing the lenses are fixed on the calibration rods and are perpendicular to the axes of the calibration rods, so that the lenses are limited to be calibrated with the reference barrels and are prevented from being deviated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-power lens assembly, in particular to a high-power lens assembly for optical fiber quartz scanning. BACKGROUND

[0002] The scanning lens is made of a lens by a transparent spherical surface, a curved surface material to refract light. A set of lenses contains multiple lenses in the middle, according to the position of adjusting and replacing the lens, the same set of lenses can be adjusted according to different light environments.

[0003] According to patent number CN113671658A, published (announced) on November 19, 2021, a kind of high-power optical fiber quartz scanning lens is disclosed. The receiving body is fixed at one end of the front end fixed body, wherein the working structure is located at one end of the receiving body, the butt joint structure is fixed at one end of the receiving body, wherein the first splicing body is located at one end of the butt joint structure, the tail sealing body is located at one end of the first splicing body, the front end fixed body inner end side is provided with end thread hole, wherein the first built-in groove is opened through end thread hole in the inner end of the front end fixed body, the first built-in groove inner end side is placed with the outer protective pad of glue connection, wherein the first double concave lens is placed on the side of the outer protective pad, the first double concave lens is located in the first built-in groove, wherein the first double concave lens one end is provided with the inner protective pad of glue connection.

[0004] In the prior art including the above patent, in order to improve the precision and durability, the lens group of high power does not use complex mechanism to drive the lens to move to realize stepless zoom, but according to the use environment of the lens group, a plurality of fixed grooves and fixed mechanisms are pre-opened to realize fixed focus, when the focal point needs to be changed, the lens is disassembled, reinstalled and the new lens is connected to realize zoom, but when the clamping groove type installation is not in place and aging, it is easy to loosen and cause the lens to deviate and cause astigmatism. SUMMARY

[0005] The purpose of the present application is to provide a high-power lens assembly for optical fiber quartz scanning, which aims to solve the above problems.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a high-power lens assembly for optical fiber quartz scanning, comprising a lens barrel and a reference barrel which are mutually connected, a lens is arranged in the lens barrel, further comprising a calibration assembly, which comprises a calibration rod and a reference rod arranged in the lens barrel and the reference barrel respectively in the form of an odd polygon, a hard gasket is arranged on the lens and vertically connected to the calibration rod, the reference rod is coaxially fixed with the calibration rod, so that the lens and the reference barrel axis are coincident.

[0007] As preferred, the calibration rod is slidably connected with a docking sleeve for docking the reference rod to limit the coaxiality of the calibration rod and the reference rod.

[0008] As preferred, a clamping rod is vertically arranged on the hard gasket along the axis and is clamped in a clamping groove arranged on the calibration rod.

[0009] As preferred, a stray light processing assembly is further included, which comprises a light absorption plate circumferentially and obliquely arranged on the hard gasket.

[0010] As preferred, the light absorption plate is rotationally connected to a fixing frame arranged on the hard gasket and is driven to flip by a predetermined angle along the fixing frame.

[0011] As preferred, a pre-contact point is arranged in the clamping groove to limit the spacing between the lenses.

[0012] As preferred, a clamping sleeve with a gradually changing arc strip is rotationally connected to the calibration rod, and the gradually changing arc strip pushes against the clamping rod and the clamping groove to match them when the clamping sleeve rotates.

[0013] As preferred, a sliding ring for bearing one end of the light absorption plate is slidably connected to the hard gasket, and the sliding ring is driven to slide to drive the light absorption plate to flip.

[0014] As preferred, a dial rod is rotationally connected to the hard gasket through a damping member, and a clamping sleeve is further included, which is provided with a limiting arc on the other side for limiting the flip angle of the dial rod to make the dial rod push against the sliding ring to move.

[0015] As preferred, a moving block connected with the docking sleeve is slidably arranged on the lens barrel, and adjacent moving blocks are connected through a connecting ring.

[0016] In the above technical solution, the high-power lens assembly for optical fiber quartz scanning provided by the application has the following beneficial effects: the calibration rod is arranged in the lens barrel, so that when the lens barrel and the reference barrel are docked, the calibration rod and the reference rod are docked to fix the two lens barrels, and the hard gasket for fixing the lenses is fixed to the calibration rod and is perpendicular to the axis of the calibration rod, so that the lenses are limited to be calibrated with the reference barrel to avoid lens deviation. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments described in the application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 Overall schematic diagram provided for embodiments of the present application;

[0019] Figure 2 Overall exploded schematic diagram provided for embodiments of the present application;

[0020] Figure 3 Lens barrel and reference barrel schematic diagram provided for embodiments of the present application;

[0021] Figure 4 Calibration assembly schematic diagram provided for embodiments of the present application;

[0022] Figure 5 For Figure 4 Enlarged schematic diagram at A;

[0023] Figure 6 Wandering light processing assembly exploded schematic diagram provided for embodiments of the present application;

[0024] Figure 7 For Figure 6 Enlarged schematic diagram at B;

[0025] Figure 8 For Figure 6 Enlarged schematic diagram at C;

[0026] Figure 9 Lens and hard gasket schematic diagram provided for embodiments of the present application;

[0027] Figure 10 Calibration assembly and lens barrel exploded schematic diagram;

[0028] Figure 11 Wandering light processing assembly exploded schematic diagram from another angle provided for embodiments of the present application;

[0029] Figure 12 For Figure 11 Enlarged schematic diagram at D;

[0030] Figure 13 Overall cross-sectional schematic diagram provided for embodiments of the present application;

[0031] Figure 14 For Figure 13 Enlarged schematic diagram at E;

[0032] Figure 15 For Figure 13 Enlarged schematic diagram at F.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 1. Lens barrel; 11. Protective barrel; 12. Nut sleeve; 13. Slide groove; 2. Reference barrel; 21. Threaded sleeve; 3. External protective lens; 31. Lens; 40. Hard pad; 401. Clamping rod; 402. Base frame; 403. Lever; 41. Calibration rod; 42. Reference rod; 420. Slot; 421. Docking hole; 422. Pre-contact point; 43. Docking sleeve; 50. Connecting ring; 51. Moving block; 511. Extension plate; 6. Loose light processing assembly; 60. Fixing frame; 61. Light absorbing plate; 62. Sliding ring; 621. Slide bar; 71. Clamping sleeve; 711. Gradient arc strip; 712. Restricting arc; 713. Stepped arc groove; 72. Sliding frame; 73. Synchronous belt. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0036] like Figures 1-15 As shown, a high-power lens assembly for fiber optic quartz scanning includes a lens barrel 1 and a reference barrel 2 that are mated to each other. A lens 31 is disposed inside the lens barrel 1. The assembly also includes a calibration component, which includes a calibration rod 41 and a reference rod 42 that are respectively disposed in odd-numbered polygons inside the lens barrel 1 and the reference barrel 2. A rigid pad 40 is disposed on the lens 31 and is vertically snapped onto the calibration rod 41. The reference rod 42 is coaxially fixed with the calibration rod 41 so that the axis of the lens 31 coincides with that of the reference barrel 2.

[0037] Specifically, the lens barrel 1 is provided with a nut sleeve 12, which is used to connect with the threaded sleeve 21 on the reference barrel 2 to align the two lens barrels. There are no fewer than three calibration rods 41 and reference rods 42 to form a calibration frame. The calibration frame serves as a support frame for the hard pad 40 to fix the lens 31. The lens 31 is snapped into the groove on the hard pad 40. The number of hard pads 40 is the same as the number of calibration rods 41. After the two lens barrels are aligned, the calibration rods 41 and reference rods 42 are aligned to form a calibration frame, which calibrates the hard pad 40 to ensure that the lens 31 and the reference barrel 2 are on the same axis and to prevent misalignment.

[0038] The technical scheme is characterized in that the calibration rod 41 is arranged in the lens barrel 1, so that when the lens barrel 1 and the reference barrel 2 are docked, the calibration rod 41 and the reference rod 42 are docked, thereby fixing the two lens barrels, and the hard gasket 40 for fixing the lens 31 is fixed to the calibration rod 41 and is perpendicular to the axis of the calibration rod 41, so that the lens 31 is limited to be calibrated with the reference barrel 2 and the lens 31 is prevented from being deviated.

[0039] Further, the lens barrel 1 is provided with the outer protective lens 3 at one end for emitting light to the outside, so as to block dust and refract light.

[0040] As an embodiment provided by the present application, the docking sleeve 43 is sleeved on the calibration rod 41, the diameter of the calibration rod 41 is smaller than that of the reference rod 42, the reference rod 42 is provided with the docking hole 421 at the end for docking the calibration rod 41, after the lens barrel 1 and the reference barrel 2 are screwed and docked, the docking hole 421 on the reference rod 42 is pre-docked with the calibration rod 41, and then the docking sleeve 43 slides along the calibration rod 41 to limit the coaxial arrangement of the calibration rod 41 and the reference rod 42, thereby completing the docking of the two lens barrels and forming the calibration frame.

[0041] As an embodiment provided by the present application, the hard gasket 40 is provided with the base frame 402 which is perpendicular to the axis, the clamping rod 401 is arranged on the base frame 402, the calibration rod 41 is provided with the clamping groove 420 which is parallel to the axis of the calibration rod 41, the clamping rod 401 and the clamping groove 420 are in interference fit, so as to be clamped in the clamping groove 420 by external pressure, thereby preventing loosening, and after clamping, the hard gasket 40 which is perpendicular to the axis of the lens barrel 1 is parallel to the bottom plate in the reference barrel 2, thereby completing the fixation of the hard gasket 40.

[0042] As an embodiment provided by the present application, the stray light processing assembly 6 is further included, which comprises the light absorption plate 61 which is circumferentially and obliquely arranged on the hard gasket 40, the light absorption plate 61 is covered with the velvet, the velvet is dyed with black, and the length of the velvet is 1mm-2mm, so as to absorb stray light which is reflected into the lens barrel 1 from the outside, thereby preventing the stray light from interfering with the light beam emitted along the lens 31.

[0043] As an embodiment provided by the present application, the light absorption plate 61 is rotationally connected to the fixing frame 60 arranged on the hard gasket 40, the light absorption plate 61 can be flipped according to the use environment, so as to change the range of absorbing light, the light absorption plate 61 is flipped by a predetermined angle of 20°-60°, and has four gears of 20°, 30°, 45° and 60°, the smaller the angle is, the smaller the range of shielding is, and the smaller angle is suitable for the lens group with a larger light emitting range, and the light absorption plate 61 can absorb stray light at different gears and in different environments.

[0044] As an embodiment provided by the present application, the clamping groove 420 is provided with a pre-contact point 422, which serves as the base point of the clamping rod 401 to facilitate the positioning when the lens 31 is installed. Since the lens group is a high-power lens group, the number of lenses 31 is small, and the number of lenses 31 in the single lens barrel 1 is limited to no more than six by the clamping rod 401, so as to reduce the precision and cost of manufacturing the calibration rod 41. When the hard gasket 40 is installed, the clamping rod 401 is first clamped to the pre-contact point 422 to complete the pre-fixing, thereby facilitating the subsequent interference fit installation.

[0045] As an embodiment provided by the present application, the calibration rod 41 is rotatably connected with a clamping sleeve 71 having a gradually changing arc strip 711. The number of the gradually changing arc strips 711 is two, the distance between the two gradually changing arc strips 711 is the same as the length of the clamping rod 401, the outer diameter of the gradually changing arc strip 711 is larger than the inner diameter, and when the hard gasket 40 is fixed, the clamping sleeve 71 is driven to rotate along the calibration rod 41, so that the outer side of the gradually changing arc strip 711 is first attached to the clamping rod 401, and then directly extrudes the calibration rod 41 from the inner side, thereby driving the clamping groove 420 and the clamping rod 401 to fit, and completing the interference fit installation.

[0046] Further, the lens barrel 1 is provided with a sliding groove 13, the sliding groove 13 is slidably connected with a sliding frame 72, the sliding frame 72 is provided with two rotating shafts, a synchronous belt 73 (which can be a gear belt) is sleeved between the two rotating shafts, the clamping sleeve 71 is rotatably connected to the sliding frame 72 and is limited by the rotating shafts on the sliding frame 72. When the clamping rod 401 needs to be installed, the sliding frame 72 is driven to slide along the sliding groove 13, the clamping sleeve 71 is moved to the clamping rod 401 after pre-fixing, and the synchronous belt 73 is rotated to drive the clamping sleeve 71 to rotate, thereby completing the interference fit installation.

[0047] As an embodiment provided by the present application, the sliding ring 62 is provided with a sliding strip 621, the sliding strip 621 is slidably connected to the base frame 402, the sliding ring 62 is an elastic metal frame and can be deformed, and the light absorption plate 61 is rotatably connected to the sliding ring 62 and the fixed frame 60 at both ends. When adjusting, the sliding ring 62 is driven to slide along the axis of the fixed frame 60 to deform the sliding ring 62 and drive the light absorption plate 61 to flip, thereby changing the flip angle of the light absorption plate 61, and being applicable to different lens groups.

[0048] As an embodiment provided by the present application, the hard gasket 40 is rotationally connected with the shifting rod 403 through a damping member (the damping member is a rotary damper with hovering function), and further comprises a clamping sleeve 71, one side of the clamping sleeve 71 is provided with a limiting arc 712 for limiting the turning angle of the shifting rod 403, and a stepped arc slot 713 with different diameters is formed in the limiting arc 712, the stepped arc slot 713 with different diameters corresponds to different gears, i.e. four gears of 20°, 30°, 45° and 60°, before installation, the sliding ring 62 is pushed to make the shifting rod 403 return to the default state (the default state is that the shifting rod 403 is fitted with the stepped arc slot 713 with the largest diameter), after the clamping rod 401 is fixed, the synchronous belt 73 is pushed in the reverse direction, so as to rotate the clamping sleeve 71, drive the stepped arc slot 713 with small diameter to push against the shifting rod 403, and thus push the sliding ring 62 to move, so as to change the rotating angle of the light absorption plate 61.

[0049] Further, the lens barrel 1 is slidably clamped with the protection barrel 11, and the protection barrel 11 is used for protecting the sliding groove 13 and the sliding frame 72 on the lens barrel 1.

[0050] As the optimal embodiment provided by the present application, the moving block 51 is slidably connected to the lens barrel 1, the moving block 51 is connected with the butt joint sleeve 43 through the extension plate 511, and adjacent moving blocks 51 are connected through the connecting ring 50, when the lens barrel 1 and the reference barrel 2 are threadedly connected, the moving block 51 is pushed to drive all the moving blocks 51 to move together through the connecting ring 50, and the butt joint of the butt joint sleeve 43 is completed.

[0051] When the lens barrel 1 is installed, first, the sliding ring 62 is pushed to make the shifting rod 403 return to the default state, then the one end of the clamping rod 401 is first clamped with the pre-clamping point 422 to complete the pre-fixing, then the sliding frame 72 is driven to slide along the sliding groove 13, the clamping sleeve 71 is driven to move to the clamping rod 401 after pre-fixing, and the synchronous belt 73 is rotated to drive the clamping sleeve 71 to rotate, the installation of the interference fit is completed, then the synchronous belt 73 is pushed in the reverse direction, so as to rotate the clamping sleeve 71, drive the stepped arc slot 713 with small diameter to push against the shifting rod 403, thus push the sliding ring 62 to move, change the rotating angle of the light absorption plate 61, complete the installation of one lens 31 and the adjustment of the light absorption plate 61, finally, the lens barrel 1 and the reference barrel 2 are threadedly connected, the butt joint hole 421 on the reference rod 42 is pre-butted with the calibration rod 41, then the moving block 51 is pushed to slide after butt joint, the butt joint sleeve 43 slides along the calibration rod 41 to limit the coaxiality of the calibration rod 41 and the reference rod 42, complete the butt joint of the two lens barrels and the formation of the calibration frame.

[0052] The foregoing merely illustrates some exemplary embodiments of the application, and no doubt numerous modifications and alterations thereto will be apparent to those skilled in the art. Accordingly, the above description is intended for purposes of illustration only and should not be construed as limiting the scope of the application.

Claims

1. A high-power lens assembly for optical fiber quartz scanning, comprising a lens barrel (1) and a reference barrel (2) which are mutually butted, a lens (31) being arranged in the lens barrel (1), characterized in that, It also includes a calibration assembly, which includes a calibration rod (41) and a reference rod (42) respectively arranged in odd-numbered polygons in the lens barrel (1) and the reference barrel (2). A hard pad (40) is provided on the lens (31) and is vertically snapped onto the calibration rod (41). The reference rod (42) is coaxially fixed with the calibration rod (41) so that the lens (31) and the axis of the reference barrel (2) coincide. The calibration rod (41) is slidably connected to a docking sleeve (43) for docking with the reference rod (42) to restrict the calibration rod (41) and the reference rod (42) to be coaxial; A snap-fit ​​rod (401) is vertically arranged along the axis on the hard pad (40), and the snap-fit ​​rod (401) is driven to snap into the slot (420) opened on the calibration rod (41); The lens barrel (1) is slidably provided with a movable block (51) connected to the docking sleeve (43), and adjacent movable blocks (51) are connected by a connecting ring (50).

2. A high power lens assembly for optical fiber silica scanning according to claim 1, wherein, It also includes a light processing assembly (6), which includes a light-absorbing plate (61) arranged circumferentially inclined on the rigid pad (40).

3. A high power lens assembly for optical fiber silica scanning according to claim 2, wherein, The light-absorbing plate (61) is rotatably connected to the fixing frame (60) provided on the hard pad (40), and the light-absorbing plate (61) is driven to rotate along the fixing frame (60) by a predetermined angle.

4. A high power lens assembly for optical fiber silica scanning according to claim 1, wherein, The slot (420) is provided with a pre-contact point (422), which limits the spacing between the lenses (31).

5. A high power lens assembly for optical fiber silica scanning according to claim 1, wherein, The calibration rod (41) is rotatably connected to a snap-fit ​​sleeve (71) with a gradient arc strip (711). The gradient arc strip (711) rotates with the snap-fit ​​sleeve (71) and pushes against the snap-fit ​​rod (401) to match the snap-fit ​​groove (420).

6. A high power lens assembly for optical fiber silica scanning according to claim 3, wherein, A sliding ring (62) for supporting one end of the light-absorbing plate (61) is slidably connected to the hard pad (40). The sliding ring (62) is driven to slide so as to drive the light-absorbing plate (61) to flip.

7. A high power lens assembly for optical fiber silica scanning according to claim 6, wherein, The hard pad (40) is rotatably connected to a lever (403) via a damping element, and also includes a snap-fit ​​sleeve (71). The other side of the snap-fit ​​sleeve (71) is provided with a limiting arc (712) for limiting the flip angle of the lever (403) so that the lever (403) pushes against the sliding ring (62) to move.

Images