Focus-adjustable high-precision TO coupling system

Abstract

The utility model relates to the technical field of coupling systems, in particular to a focus-adjustable high-precision TO coupling system. According to the technical scheme, the device comprises a first coupler, a diode is clamped in the first coupler, the outer wall of the first coupler is sleeved with a second coupler in a threaded mode, and a collimating lens is sleeved with the second coupler; a positioning assembly used for limiting the first coupler is arranged under the second coupler and comprises a fixed lantern ring fixedly connected to the outer wall of the lower end of the first coupler in a sleeving mode, a plurality of sliding rods are arranged on the outer wall of the fixed lantern ring in a sliding mode, the upper ends of the sliding rods are fixedly connected with limiting sleeve pieces, and springs are connected between the sliding rods in a sleeving mode. According to the utility model, the first coupler can be well limited, unnecessary displacement in the adjusting process is prevented, and when the system faces external vibration or other tiny interference, the elasticity of the spring enables the system to adaptively adjust and maintain the relative position to be stable, and the coupling effect is ensured not to be influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coupling system technical field especially relates to a focal point adjustable high accuracy TO coupling system. BACKGROUND

[0002] In many fields such as optical communication, optical experiment and laser technology, accurate coupling system plays a decisive role in guaranteeing system performance. For example, in optical fiber communication, the coupling condition between optical fiber and light source or detector directly concerns the transmission efficiency and quality of optical signal. In the debugging and manufacturing link of laser devices, accurate coupling is also indispensable. In the existing TO coupling system, the position of the lens on the TO cap is fixed, and is affected by the TO internal elements, TO cap size tolerance and element assembly tolerance factors. The distance from the optical chip to the lens in each device is different, and the focal length is different, which leads to the difficulty in ensuring that each device can obtain high coupling efficiency in the application scene with high requirements for the output optical power of the laser. Therefore, the utility model provides a focal point adjustable high accuracy TO coupling system. SUMMARY

[0003] The utility model discloses a focal point adjustable high accuracy TO coupling system to solve the problem that the position of the lens on the TO cap is fixed in the TO coupling system in the background art, and the distance from the optical chip to the lens in each device is different, and the focal length is different, which leads to the difficulty in ensuring that each device can obtain high coupling efficiency in the application scene with high requirements for the output optical power of the laser.

[0004] The utility model discloses a technical scheme: a focal point adjustable high accuracy TO coupling system, which comprises: a first coupler, a diode is connected to the inside of the first coupler, a second coupler is screwed to the outer wall of the first coupler, and a collimating lens is sleeved in the second coupler; a positioning assembly for limiting the first coupler is arranged below the second coupler, the positioning assembly comprises a fixed sleeve ring fixedly sleeved to the lower end of the outer wall of the first coupler, a plurality of sliding rods are slidingly arranged on the outer wall of the fixed sleeve ring, the upper end of each sliding rod is fixedly connected with a limiting sleeve piece, a spring is sleeved between the sliding rods, one end of the spring is fixedly connected with the fixed sleeve ring, and the other end of the spring is fixedly connected with the limiting sleeve piece.

[0005] Optionally, a plurality of guide sliding grooves are formed on the outer wall of the fixed sleeve ring, and the guide sliding grooves are slidingly connected with the sliding rods.

[0006] Optionally, a sleeve cap is fixedly sleeved between the sliding rods.

[0007] Optionally, the upper surface of the first coupler is provided with a clamping groove, and the bottom of the diode is fixedly provided with a clamping block.

[0008] Optionally, the outer wall of the second coupler is provided with a top screw fixing hole and a window hole, and the top screw fixing hole is located directly above the window hole.

[0009] Optionally, the outer wall of the first coupler is provided with a first scale mark.

[0010] Optionally, the outer wall of the second coupler is provided with a second scale mark.

[0011] Optionally, the bottom surface of the second coupler and the opposite surface of the limiting sleeve piece are respectively provided with anti-skid lines.

[0012] In summary, the present application includes at least one of the following beneficial technical effects:

[0013] The utility model discloses a fixed sleeve ring, sliding rod, limiting sleeve piece and spring structure in the positioning assembly, the fixed sleeve ring is fixed in the first coupler lower extreme outer wall, and the sliding rod is slid in its outer wall, and the spring is connected with the fixed sleeve ring and the limiting sleeve piece respectively in the both ends of the sliding rod, can play the good limiting action to the first coupler, prevents the unnecessary displacement from occurring in the adjustment process, and when the system faces external vibration or other small interference, the elasticity of spring can make the system self -adaptation adjustment, maintains the relative position stability, guarantees the coupling effect is not influenced.

[0014] Further through the threaded sleeve joint design of the first coupler and the second coupler, and the first scale mark of the outer wall of the first coupler and the second scale mark of the outer wall of the second coupler, the relative position between the collimating lens and the diode can be accurately adjusted, the difference of the distance from the optical chip to the lens caused by the TO internal element, the TO cap size tolerance and the element assembly tolerance can be effectively compensated, in the application scene where the laser output optical power requirement is higher, the focal length can be flexibly adjusted for each device, to ensure that each device can obtain higher coupling efficiency, and the system performance is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Give the structure schematic diagram of a focal point adjustable high-precision TO coupling system;

[0016] Figure 2 For Figure 1 Split structure schematic diagram;

[0017] Figure 3 For Figure 2 The structure schematic diagram of the first coupler in

[0018] Figure 4 For Figure 2Split structure schematic view of center positioning assembly.

[0019] Reference signs:

[0020] 1, first coupler; 2, diode; 3, second coupler; 4, collimating lens;

[0021] 5, positioning assembly; 51, fixed collar; 52, sliding rod; 53, limiting sleeve; 54, spring;

[0022] 6, guide chute; 7, cap; 8, clamping groove; 9, clamping block; 10, jackscrew fixing hole; 11, windowed hole; 12, first scale mark; 13, second scale mark. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0024] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0025] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing 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. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 communication between two elements. 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.

[0028] Embodiment

[0029] As Figures 1 to 3 shown, the utility model provides a high-precision TO coupling system of adjustable focus, includes: first coupler 1, and the upper end outer wall of first coupler 1 is equipped with fine thread, the pitch of fine thread is 0.5mm, the length of thread is 6mm, and the upper surface of the first coupler 1 of thread groove is equipped with the clamping groove 8, and the outer wall of first coupler 1 is provided with first scale mark 12 by laser printing, and the minimum scale unit of first scale mark 12 is 10mm.

[0030] Further, the inside of first coupler 1 is provided with diode 2, and the bottom of diode 2 is fixedly provided with clamping block 9, clamping block 9 can be mutually clamped with clamping groove 8, so that first coupler 1 and diode 2 are mutually stable clamping, the outer wall of first coupler 1 is provided with second coupler 3, and the inner wall of second coupler 3 is equipped with fine thread, and the pitch of fine thread is 0.5mm, the length of thread is 8mm, can be mutually stable thread sleeve with first coupler 1, the outer wall of second coupler 3 is equipped with top screw fixing hole 10 and window hole 11, be convenient for adjusting the position of fine adjustment collimating lens 4 by rotating the top screw, and top screw fixing hole 10 is located directly above window hole 11, directly observing whether the adjustment position is accurate through window hole 11 is convenient, and it is convenient to point gum fixed.

[0031] Secondly, the outer wall of second coupler 3 is provided with second scale mark 13 by laser printing, and the full circle scale of second scale 13 is 360 degrees, and the minimum scale unit is 1 degree, the bottom surface of second coupler 3 is provided with anti-skid line, and the inside of second coupler 3 is provided with collimating lens 4, which is convenient for adjusting the transmission efficiency of diode 2.

[0032] As Figure 1 and Figure 4 shown, the positioning assembly 5 for limiting first coupler 1 is arranged below second coupler 3, the positioning assembly 5 includes a fixed sleeve 51 fixedly sleeved on the outer wall of the lower end of first coupler 1, a plurality of guide sliding grooves 6 are formed on the outer wall of the fixed sleeve 51, and the guide sliding grooves are arranged in a "T" shape structure, a plurality of sliding rods 52 are slidably arranged on the outer wall of the fixed sleeve 51 through the guide sliding grooves 6, so that the sliding rods 52 can be stably moved.

[0033] Further, the upper end of the sliding rod 52 is fixedly connected with a limiting sleeve 53, the limiting sleeve 53 is movably sleeved with the first coupler 1, one side of the limiting sleeve 53 is provided with anti-skid lines, the anti-skid lines can be tightly attached with the anti-skid lines on the bottom surface of the second coupler 3, so that the first coupler 1 and the second coupler 3 are prevented from being displaced, the spring 54 is sleeved between the sliding rods 52, one end of the spring 54 is fixedly connected with the fixed sleeve ring 51, the other end of the spring 54 is fixedly connected with the limiting sleeve 53, the spring 54 can provide pressure for the limiting sleeve 53, so that the limiting sleeve 53 is tightly attached with the second coupler 3.

[0034] In the embodiment, first, the diode 2 is clamped into the clamping groove 8 on the upper surface of the first coupler 1 through the clamping block 9 on the bottom of the diode 2, and the installation of the diode is completed. Then, the collimating lens 4 is sleeved in the second coupler 3. Subsequently, the second coupler 3 is threadedly sleeved on the outer wall of the first coupler 1. Since the outer wall of the first coupler 1 is provided with the first scale mark 12, and the outer wall of the second coupler 3 is provided with the second scale mark 13, the rotation depth of the second coupler 3 relative to the first coupler 1 can be accurately controlled by observing the two scale marks during the threadedly sleeving process, so that the preliminary adjustment of the focal point position is realized.

[0035] When the focal point needs to be finely adjusted, the jackscrew fixing hole 10 provided on the outer wall of the second coupler 3 can be used. By rotating the jackscrew into the jackscrew fixing hole 10, a small force is applied to the collimating lens 4 in the second coupler 3, the position of the collimating lens 4 is finely adjusted, and the focal point precision is further optimized. In addition, the window hole 11 provided on the outer wall of the second coupler 3 can facilitate the operator to observe the relative position relationship of the internal collimating lens 4 and other components.

[0036] In the positioning assembly 5, the fixed sleeve ring 51 is fixedly sleeved on the lower end outer wall of the first coupler 1. The plurality of sliding rods 52 are slidingly arranged on the outer wall of the fixed sleeve ring 51, the spring 54 generates a pushing force on the limiting sleeve 53, the limiting sleeve 53 is tightly attached with the anti-skid lines on the bottom surface of the second coupler 3, so that the frictional force between the first coupler 1 and the second coupler 3 is limited, and the first coupler 1 and the second coupler 3 are prevented from being randomly moved under external interference.

[0037] The above specific embodiments are only optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the above specific embodiments can be variously improved and combined by the person skilled in the art.

Claims

1. A high precision TO coupling system with adjustable focus, characterized in that, The utility model relates to a coupling device for laser collimation, which comprises: a first coupling (1) with a diode (2) inside and a second coupling (3) outside, the inside of the second coupling (3) is sleeved with a collimating lens (4); a positioning assembly (5) is arranged below the second coupling (3) to limit the first coupling (1), the positioning assembly (5) comprises a fixed sleeve ring (51) fixedly sleeved on the outer wall of the lower end of the first coupling (1), a plurality of sliding rods (52) are slidingly arranged on the outer wall of the fixed sleeve ring (51), a limiting sleeve piece (53) is fixedly connected to the upper end of the sliding rod (52), a spring (54) is sleeved between the sliding rods (52), one end of the spring (54) is fixedly connected to the fixed sleeve ring (51), and the other end of the spring (54) is fixedly connected to the limiting sleeve piece (53).

2. The high precision TO-coupling system with adjustable focus according to claim 1, characterized in that, A plurality of guide sliding grooves (6) are formed on the outer wall of the fixed sleeve ring (51) and are slidingly connected with the sliding rods (52).

3. The high precision TO-coupling system with adjustable focus according to claim 1, characterized in that, A sleeve cap (7) is fixedly sleeved between the sliding rods (52).

4. The high precision TO-coupling system with adjustable focus according to claim 1, characterized in that, A clamping groove (8) is formed on the upper surface of the first coupling (1), and a clamping block (9) is fixedly arranged on the bottom of the diode (2).

5. The high precision TO-coupling system with adjustable focus according to claim 1, characterized in that, A top screw fixing hole (10) and a window hole (11) are formed on the outer wall of the second coupling (3), and the top screw fixing hole (10) is located above the window hole (11).

6. The high precision TO-coupling system with adjustable focus according to claim 1, characterized in that, A first scale mark (12) is arranged on the outer wall of the first coupling (1).

7. The high precision TO-coupling system with adjustable focus according to claim 1, wherein, A second scale mark (13) is arranged on the outer wall of the second coupling (3).

8. The high precision TO-coupling system with adjustable focus according to claim 1, characterized in that, Anti-slip patterns are arranged on the opposite surfaces of the limiting sleeve piece (53) and the bottom surface of the second coupling (3).

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