Novel adjustable laser attenuator

Abstract

The utility model relates to a novel adjustable laser attenuator, which comprises a base, a through hole is arranged in the base, glass sleeves are mounted on two sides in the through hole in a gluing manner, and optical fiber collimators are mounted in the glass sleeves in a gluing manner; a mounting groove is formed in the base, the bottom of the mounting groove is communicated with the through hole, a first nut and a second nut are mounted in the mounting groove in a glued mode, a rubber ring is arranged between the first nut and the second nut, the first nut and the second nut are both mounted on an adjusting rod, and a light absorption part is mounted at the end, close to the through hole, of the adjusting rod. And a filter is also arranged in the through hole. The first nut is firstly fixed in the mounting groove, the rubber ring is mounted in the mounting groove, then the second nut is screwed into the mounting groove, the rubber ring is compressed, and therefore threads of the second nut and the first nut can abut against threads on the outer surface of the adjusting rod, the purpose of eliminating transmission gaps is achieved, and attenuation fluctuation is avoided. The whole structure is simple, installation is easy, production cost is low, and yield is high.

Description

Technical Field

[0001] The utility model relates to the technical field of laser communication, in particular to a novel adjustable laser attenuator. Background Art

[0002] A laser attenuator works by reducing the intensity of a laser beam through absorption or scattering. It attenuates the laser beam by adding an optical element to the optical path. This optical element is typically made of metal, glass, or quartz. When the laser beam passes through this element, some of the light is absorbed or scattered, weakening the beam.

[0003] The adjustable laser attenuator is usually equipped with a drive rod through a threaded connection. The optical element used to adjust the laser intensity is usually fixed on the drive rod. By adjusting the blocking ratio of the optical element to the light path, the laser power can be controlled.

[0004] However, there is a transmission gap between the driving rod and the base of the laser attenuator. The existence of this transmission gap causes the driving rod to have room for shaking, which easily leads to attenuation fluctuations and is an important reason for the signal fluctuations generated by the laser attenuator. Utility Model Content

[0005] The purpose of the utility model is to provide a novel adjustable laser attenuator with high stability.

[0006] In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions.

[0007] A novel adjustable laser attenuator comprises a base with a through-hole formed within. Glass tubes are glued onto and installed on both sides of the through-hole. A fiber optic collimator is glued onto the glass tubes. A mounting slot is formed within the base, the bottom of which communicates with the through-hole. A first nut and a second nut are glued onto the slot, with a rubber ring positioned between them. Both nuts are mounted on an adjustment rod. A light absorber is mounted on the end of the rod near the through-hole. The rubber ring is compressed along the axis of the rod. The second nut is glued into the slot with flexible adhesive. A filter is also positioned within the through-hole.

[0008] As can be seen, by first securing the first nut in the mounting slot and inserting the rubber ring, then installing the second nut in the mounting slot, screwing in the adjustment rod, and adjusting the second nut to compress the rubber ring, the threads of the second nut and the first nut can respectively abut the opposing threaded surfaces on the outer surface of the adjustment rod, thereby eliminating transmission clearance and avoiding attenuation fluctuations. The second nut is bonded to the mounting slot with a flexible adhesive, which prevents rotation of the second nut and applies a tensile force along the axis of the adjustment rod. The direction of this tensile force is consistent with the direction of the elastic thrust applied by the rubber ring to the second nut, and both are used to push the second nut to compensate for the thread transmission clearance, achieving long-term zero-gap transmission and increasing the lifespan of transmission stability. The filter allows laser light of a predetermined wavelength to pass through. No separate external component is required for filtering, saving space.

[0009] Furthermore, an inner boss is provided inside the mounting groove, and the inner boss is provided on a side of the first nut close to the through hole.

[0010] Furthermore, a knob is installed on the top of the adjusting rod.

[0011] Furthermore, the adjustment rod and the light absorbing member are integrally formed.

[0012] Furthermore, a first slot is provided on the upper side of the second nut, and a second slot is provided on the top of the knob.

[0013] Furthermore, the filter is mounted on the optical fiber collimator through the first glass tube.

[0014] Furthermore, the filter is mounted on the inner wall of the through hole through the second glass tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0016] The utility model fixes the first nut in the installation groove and installs the rubber ring, then screws the second nut into the installation groove and compresses the rubber ring, so that the threads of the second nut and the first nut abut against the threads on the outer surface of the adjusting rod, thereby achieving the purpose of eliminating the transmission gap and avoiding the generation of attenuation fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the adjustment rod in the utility model;

[0020] Figure 4 This is a schematic cross-sectional view of another embodiment of the present invention.

[0021] In the figure: 100, base; 101, through hole; 102, glass sleeve; 103, fiber optic collimator; 104, mounting slot; 105, first nut; 106, second nut; 107, rubber ring; 108, adjustment rod; 109, light absorber; 200, inner boss; 300, knob; 400, first slot; 401, second slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0024] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0025] See also Figure 1-Figure 3The present invention provides a novel adjustable laser attenuator, comprising a base 100, with a through-hole 101 defined within. Both sides of through-hole 101 are used for gluing and mounting a glass sleeve 102, which is used for gluing and mounting a fiber collimator 103. A mounting slot 104 is defined within base 100, the bottom of which communicates with through-hole 101. A first nut 105 and a second nut 106 are glued and mounted within mounting slot 104, with a rubber ring 107 disposed between the first and second nuts 105, 106. Both first and second nuts 105, 106 are mounted on an adjustment rod 108, with a light absorber 109 mounted on the end of adjustment rod 108 near through-hole 101. The rubber ring 107 is compressed along the axial direction of adjustment rod 108, and the second nut 106 is glued to the mounting slot 104 using flexible glue. A filter 01 is also disposed within through-hole 101.

[0026] During assembly, the first nut 105 is first screwed into the mounting groove 104 and bonded and fixed, then the rubber ring 107 is installed into the mounting groove 104, and the second nut 106 is pushed into the mounting groove 104. Then, the adjusting rod 108 is installed inside the second nut 106 and the first nut 105. Then, the second nut 106 is rotated so that the second nut 106 can approach the first nut 105 and compress the rubber ring 107, so that the threads of the second nut 106 and the first nut 105 can abut against the threads on the outer surface of the adjusting rod 108. Finally, a flexible adhesive is filled between the second nut 106 and the mounting groove 104 to stop the second nut 106 from rotating. This solution not only eliminates transmission clearance and avoids attenuation fluctuations, but also has a simple overall structure, is easy to install, has low production costs, and has a high yield rate.

[0027] Specifically, an inner boss 200 is provided inside the mounting groove 104. The inner boss 200 is provided on a side of the first nut 105 close to the through hole 101. The inner boss 200 allows the bottom of the first nut 105 to abut against the inner boss 200, thereby limiting the position of the first nut 105 and facilitating the installation and positioning of the first nut 105.

[0028] Specifically, a knob 300 is installed on the top of the adjustment rod 108. The arrangement of the knob 300 facilitates the rotation operation of the adjustment rod 108, thereby improving the comfort of operation.

[0029] Specifically, the adjustment rod 108 and the light absorbing member 109 are integrally formed. The integral forming method can eliminate the instability factors caused by other connection methods, avoid the jitter of the light absorbing member 109 causing the laser attenuation fluctuation, and reduce the risk of the light absorbing member 109 falling off.

[0030] Specifically, a first slot 400 is defined on the upper side of the second nut 106, and a second slot 401 is defined on the top of the knob 300. By inserting a tool into the second slot 401, the adjustment rod 108 can be easily fixed so that it remains fixed when the second nut 106 rotates. By inserting a tool into the first slot 400, the second nut 106 can be easily driven to rotate.

[0031] Preferably, the filter 01 is mounted on the optical fiber collimator 103 through the first glass tube 11, which facilitates the simplification of the structure and improves the installation efficiency of the filter.

[0032] Preferably, the filter 01 is mounted on the lens 12 of the optical fiber collimator 103 through the first glass tube 11. This simplifies the structure and further improves the installation efficiency of the filter.

[0033] See also Figure 4 In other embodiments, the filter 01 is preferably mounted on the inner wall of the through hole 101 through the second glass tube 22. This simplifies the structure and improves the installation efficiency of the filter.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A novel adjustable laser attenuator, comprising a base (100), characterized in that: A through hole (101) is provided inside the base (100), and both sides of the through hole (101) are used for gluing and installing a glass sleeve (102), and the glass sleeve (102) is used for gluing and installing a fiber optic collimator (103); A mounting groove (104) is provided inside the base (100), the bottom of the mounting groove (104) is communicated with the through hole (101), a first nut (105) and a second nut (106) are glued and installed inside the mounting groove (104), a rubber ring (107) is provided between the first nut (105) and the second nut (106), the first nut (105) and the second nut (106) are both mounted on an adjustment rod (108), a light absorbing member (109) is mounted on the end of the adjustment rod (108) close to the through hole (101), the rubber ring (107) is in a compressed state along the axial direction of the adjustment rod (108), and the second nut (106) is glued in the mounting groove (104) by flexible glue; A filter (01) is also provided in the through hole (101).

2. The novel adjustable laser attenuator according to claim 1, characterized in that: An inner boss (200) is provided inside the mounting groove (104), and the inner boss (200) is provided on a side of the first nut (105) close to the through hole (101).

3. The novel adjustable laser attenuator according to claim 2, characterized in that: A knob (300) is installed on the top of the adjustment rod (108).

4. The novel adjustable laser attenuator according to claim 3, characterized in that: The adjusting rod (108) and the light absorbing member (109) are integrally formed.

5. The novel adjustable laser attenuator according to claim 4, characterized in that: A first slot (400) is provided on the upper side of the second nut (106), and a second slot (401) is provided on the top of the knob (300).

6. A novel adjustable laser attenuator according to any one of claims 1 to 5, characterized in that: The filter (01) is mounted on the optical fiber collimator (103) via a first glass tube (11).

7. A novel adjustable laser attenuator according to any one of claims 1 to 5, characterized in that: The filter (01) is mounted on the inner wall of the through hole (101) via a second glass tube (22).

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