Optical fiber end face protection device

Abstract

The utility model discloses an optical fiber end face protection device, which relates to the technical field of photoelectric equipment and is characterized in that an optical fiber fixing seat is in threaded sleeve connection with a protection device sleeve, and an optical fiber is fixed at the position, close to the protection device sleeve, of the optical fiber fixing seat; a 1 / 4 wave plate, a polaroid and a protection window mirror are sequentially installed in the inner cavity of the protection device sleeve from the position close to the optical fiber fixing base to the outer side of the protection device sleeve, at the moment, a sealed inner cavity environment is formed between the optical fiber fixing base and the protection window mirror, and the end face of the optical fiber is located in the sealed inner cavity environment. Dust and pollutants in the air are only attached to the outer surface of the protection window mirror without polluting the end face of the optical fiber, meanwhile, the laser is focused and transmitted through the feedback light preventing lens group composed of the 1 / 4 wave plate and the polaroid, normal operation of the optical fiber is not affected, the end face of the optical fiber is not burnt or burnt, and the service life of the optical fiber is prolonged. And long-time stable operation of the optical fiber is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to photoelectric equipment technical field, especially relate to a kind of optical fiber end face protection device. BACKGROUND

[0002] Optical fiber is a kind of fiber made of glass or plastic, mainly used for optical signal transmission and laser energy transmission;Optical fiber uses the principle of total reflection of light to transmit laser energy, and its core components include fiber core, cladding and protective sleeve;The basic principle of optical fiber communication is to convert electrical signals into optical signals, transmit them in optical fibers, and then convert optical signals back into electrical signals at the receiving end;This transmission method has extremely high speed and stability, and is suitable for application scenarios that require high-speed and stable network connection;Optical fiber communication has extremely high stability and anti-interference, and optical signals are not affected by electromagnetic interference when transmitted in optical fibers, and can maintain stable transmission quality in a large range;While ordinary broadband may be affected by electromagnetic interference and signal attenuation, resulting in delay and instability;In terms of application scenarios, optical fiber is suitable for high-demand network applications, therefore, as a light transmission medium, optical fiber is widely used in various fields of production and life.Another application of optical fiber is the transmission of laser energy, the basic principle of which is to couple a certain amount of laser energy into an optical fiber, and the optical fiber acts as a light energy transmission medium to output the energy at the other end of the optical fiber, which is widely used in industrial processing, laser beauty medical treatment and other fields.

[0003] Generally, during the use of optical fiber, the end face of the optical fiber is often exposed to the air, and dust and pollutants in the air can adhere to the end face of the optical fiber, which can affect the transmission quality of light when laser passes through the end face of the optical fiber after installation of the optical fiber;In the process of high-energy laser transmission, pollutants can absorb laser energy and generate a large amount of heat, causing the end face of the optical fiber to be burned or damaged, and when the end face of the optical fiber is burned or damaged, the end face of the optical fiber needs to be re-ground and processed, which is costly and time-consuming during maintenance.

[0004] At present, the protection of optical fiber is usually achieved by using optical fiber protection tubes, but since optical fiber needs to transmit optical signals, the optical fiber protection tube cannot completely wrap the optical fiber line, so the end face of the optical fiber is difficult to be sealed, and dust and pollutants in the air can adhere to the end face of the optical fiber, causing the end face of the optical fiber to be burned or damaged. UTILITY MODEL CONTENTS

[0005] The utility model embodiment provides a kind of optical fiber end face protection device, can solve the problem that the end face of the optical fiber is difficult to be sealed in the prior art, and dust and pollutants in the air can adhere to the end face of the optical fiber, causing the end face of the optical fiber to be burned or damaged, since optical fiber protection tube cannot completely wrap the optical fiber line.

[0006] The utility model discloses an optical fiber end face protection device, including optical fiber fixed seat and with the protection device sleeve of optical fiber fixed seat screw joint,

[0007] The optical fiber fixed seat is fixed with an optical fiber on one side close to the protection device sleeve;

[0008] The inner cavity of the protection device sleeve is sequentially provided with a quarter wave plate, a polarizer and a protection window mirror from one side close to the optical fiber fixed seat to the other side of the protection device sleeve;

[0009] When the protection device sleeve is screwed with the optical fiber fixed seat, a closed inner cavity is formed between the optical fiber fixed seat and the protection window mirror, and the optical fiber is between the optical fiber fixed seat and the quarter wave plate;

[0010] The quarter wave plate and the polarizer form an anti-feedback light lens group for focusing the laser emitted by the optical fiber and transmitting it through the protection window mirror in a preset direction.

[0011] Preferably, the protection device sleeve is provided with an external thread opening and a silica gel sealing ring close to the optical fiber fixed seat, for screwing the protection device sleeve on the optical fiber fixed seat;

[0012] The silica gel sealing ring is arranged at the end of the external thread.

[0013] Preferably, the protection window mirror is fixed in the inner cavity of the protection device sleeve by adhesion or ring compression.

[0014] Preferably, the polarizer and the protection window mirror are installed at a preset angle in the inner cavity of the protection device sleeve, and the preset angle is in the range of 0°-45°.

[0015] The angle of the polarizer and the protection window mirror installed in the inner cavity of the protection device sleeve is the same and parallel.

[0016] Preferably, the quarter wave plate, the polarizer and the protection window mirror are all provided with different wavelength protection films.

[0017] Preferably, the protection window mirror is detachably arranged in the inner cavity of the protection device sleeve.

[0018] The utility model discloses an optical fiber end face protection device, compared with the prior art, has the beneficial effects as follows:

[0019] The utility model discloses a fixing seat is fixed with the protection device sleeve sleeve joint through the optical fiber, and the position of optical fiber fixed seat is close to the protection device sleeve, and the inner chamber of protection device sleeve extends from the position close to optical fiber fixed seat to the outside of protection device sleeve and is installed with 1 / 4 wave piece, polarizer and protection window mirror in proper order, the sealed inner chamber environment is formed between optical fiber fixed seat and protection window mirror at this moment, and the optical fiber end face is in the sealed inner chamber environment, and the dust and pollutant in the air only can adhere to the outer surface of protection window mirror, and the optical fiber end face is not polluted, and the normal operation of optical fiber is not affected, and the phenomenon that the optical fiber end face appears burn or burns is not caused, and the long time stable operation of optical fiber is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The utility model discloses a kind of overall structure schematic diagram of optical fiber end face protection device provided for embodiment.

[0021] Wherein: 1, optical fiber fixed seat, 2, optical fiber, 3, silica gel seal ring, 4, 1 / 4 wave piece, 5, polarizer, 6, protection window mirror, 7, protection device sleeve. DETAILED DESCRIPTION

[0022] To make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail with the drawings. In the following description, a lot of specific details are set forth to facilitate a full understanding of the utility model. But the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0023] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0024] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the 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 specifically limited.

[0025] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, 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 specifically 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.

[0026] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted 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.

[0027] It should be noted that when an element is referred to as "fixed to" or "disposed 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 do not represent the only embodiment.

[0028] Referring to Figure 1The utility model embodiment provides a kind of optical fiber end face protection device, is composed of built-in anti-feedback optical lens group in protection device sleeve 7, protection device is a sleeve structure, rear end is the outer thread mouth matched with the installation of optical fiber interface, the end of thread mouth is silica gel sealing ring 3, the inside of protection device sleeve 7 is installed 1 / 4 wave plate 4, polarizing sheet 5, protection window mirror 6 in order from rear end to front end;1 / 4 wave plate 4, polarizing sheet 5, protection window mirror 6 can use arbitrary wavelength film layer, can be applied in a variety of laser use scene, polarizing sheet 5 and protection window mirror 6 in protection device are installed at a certain angle, and its angle range is between 45 °-0 °.

[0029] When optical fiber protection device is installed, protective lens is fixed in the most front end of protective cap by bonding or pressing ring, then silica gel sealing ring 3 is installed to the end of outer thread, then protective cap is installed to optical fiber fixing base, so that optical fiber end face is in a sealed internal cavity environment;Optical fiber is only exposed to air in the use process protection window mirror 6, contaminant only pollutes protection window mirror 6, even if protection window mirror 6 is damaged due to contaminant, then only need to replace protection device, this reduces the damage rate of optical fiber, also reduces the repair cost of optical fiber, while save the time cost of repairing optical fiber.

[0030] The utility model sets up ten groups of optical fiber protection device, and uses pulse laser 100J energy continuous operation test, after long time test, ten groups of optical fiber all do not appear damage.

[0031] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it should not be understood as the limitation of the scope of the utility model patent.There should be pointed out that, for ordinary skilled person in the art, without departing from the concept of the utility model, can make several deformation and improvement, these all belong to the protection scope of the utility model, therefore, the protection scope of the utility model patent should be the appended claims.

Claims

1. A fiber optic end-face protection device, characterized in that, include: Fiber optic mounting base (1), and a protective device sleeve (7) threadedly connected to the fiber optic mounting base (1); The optical fiber fixing base (1) has an optical fiber (2) fixed on the side near the protective device sleeve (7); The inner cavity of the protective device sleeve (7) is equipped with a quarter wave plate (4), a polarizer (5) and a protective window mirror (6) in sequence from the side near the optical fiber fixing seat (1) to the other side of the protective device sleeve (7); When the protective device sleeve (7) is threaded into the fiber optic mounting base (1), a closed inner cavity is formed between the fiber optic mounting base (1) and the protective window mirror (6), and the fiber optic cable (2) is located between the fiber optic mounting base (1) and the 1 / 4 wave plate (4). The quarter-wave plate (4) and polarizer (5) form an anti-feedback lens group, which is used to focus the laser emitted by the optical fiber (2) and transmit it through the protective window (6) in a preset direction.

2. The optical fiber end-face protection device according to claim 1, characterized in that, The protective device sleeve (7) is provided with an external thread and a silicone sealing ring (3) near the optical fiber fixing seat (1) for threading the protective device sleeve (7) onto the optical fiber fixing seat (1). The silicone sealing ring (3) is located at the end of the external thread.

3. The optical fiber end-face protection device according to claim 1, characterized in that, The protective window mirror (6) is fixed to the inner cavity of the protective device sleeve (7) by adhesive bonding or pressure ring fixing.

4. The optical fiber end-face protection device according to claim 1, characterized in that, The polarizer (5) and the protective window mirror (6) are installed in the inner cavity of the protective device sleeve (7) at a preset angle, which is in the range of 0° to 45°. The polarizer (5) and the protective window mirror (6) are installed at the same angle and parallel to each other inside the sleeve (7) of the protective device.

5. The optical fiber end-face protection device according to claim 1, characterized in that, The quarter-wave plate (4), polarizer (5), and protective window mirror (6) are all coated with protective films of different wavelengths.

6. The optical fiber end-face protection device according to claim 1, characterized in that, The protective window mirror (6) is detachably installed in the inner cavity of the protective device sleeve (7).

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