Lens for optical fiber three-core observation

Abstract

The utility model discloses a lens for optical fiber three-core observation, which relates to the technical field of optical fibers, and comprises an observation mirror body, a shading cylinder, an illumination mechanism and a positioning mechanism, the observation mirror body is provided with a focalizer and a lens group, and the lens group is provided with a lens. The shading cylinder is fixed at the tail end of the observation mirror body; the positioning mechanism is arranged at the tail end of the shading cylinder and is used for positioning an optical fiber to be observed; the illumination mechanism comprises an illumination part arranged in the shading cylinder, the illumination part is movably connected in the shading cylinder and used for illuminating the end face of the optical fiber, the illumination lamp tube generates light to illuminate the observation end face of the optical fiber, illumination light is evenly gathered on the end face of the optical fiber through the light gathering lens face, the illumination part can move left and right, and the illumination part can move left and right to illuminate the end face of the optical fiber. The illumination can be accurately irradiated on the end face of the optical fiber, the situation of insufficient illumination or exposure is avoided, and the definition of optical fiber observation imaging is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical fiber, specifically is a lens for optical fiber three -wire core observation. BACKGROUND

[0002] Optical fiber communication is the main transmission means of modern communication network, and adopting optical fiber communication is a major change in the history of communication, with the continuous development of optical fiber communication technology, the application of optical fiber three -wire core (ie, optical fiber contains three wire cores) is more and more widely, in the application and research and development, the internal structure of optical fiber needs to be observed and analyzed accurately.

[0003] The existing optical fiber observation equipment mainly adopts multiple lenses to observe the end face of the optical fiber, when observing the optical fiber three -wire core, the imaging clarity is not only related to the observation angle and the lens focal length, and the light during imaging will also cause certain influence on the imaging quality, the existing observation lens can only play the observation role, mainly adopts natural light or directly carries out the covering type exposure during imaging, there is insufficient illumination or exposure, which will affect the imaging clarity of observation, and further lead to the difficulty of optical fiber observation, and the optical fiber is not convenient for accurate observation. UTILITY MODEL CONTENT

[0004] The utility model provides a lens for optical fiber three -wire core observation, has the advantages such as illumination uniformity, observation imaging is clear, to solve the imaging fuzzy problem caused by insufficient illumination or exposure of the existing observation lens proposed above.

[0005] In order to realize the above object, the utility model provides the following technical scheme: a lens for optical fiber three -wire core observation, including observation mirror body, its characterized in that, still include shading cylinder, illumination mechanism and positioning mechanism, wherein:

[0006] The observation mirror body is installed with focusing device and lens group, the shading cylinder is fixed in the tail end of observation mirror body;

[0007] The positioning mechanism is arranged at the tail end of the shading cylinder and is used for positioning the optical fiber to be observed;

[0008] The illumination mechanism includes an illumination piece arranged in the shading cylinder, and the illumination piece is movably connected in the shading cylinder for illuminating the end face of the optical fiber.

[0009] As a preferred technical scheme of the utility model, the illumination piece includes a mounting ring and a reflecting ring, the mounting ring is fixed in the reflecting ring, a plurality of illumination lamp tubes are mounted on the outer wall of the mounting ring, and a condenser lens surface matched with the illumination lamp tubes is mounted at the front end of the reflecting ring.

[0010] As a preferred technical scheme of the utility model, the lighting lamp tube is arranged in an equidistant ring shape on the outer wall of the mounting ring, the light condensing mirror is an annular mirror arranged obliquely, and the light condensing mirror corresponds to the lighting lamp tube.

[0011] As a preferred technical scheme of the utility model, the lighting mechanism further comprises a movable cylinder, the movable cylinder is movably connected to the outer wall of the light shielding cylinder and is threadedly connected to the light shielding cylinder through a movable thread, the outer wall of the reflecting ring is symmetrically provided with a transmission block, the transmission block is fixedly connected to the inner wall of the movable cylinder, the light shielding cylinder is symmetrically provided with a penetrating movable opening, the transmission block is movably connected to the movable opening, and the movable opening is shielded by the movable cylinder.

[0012] As a preferred technical scheme of the utility model, the light shielding cylinder is further provided with an observation opening, and a sealing band capable of sealing the observation opening is mounted to the observation opening through magic tape.

[0013] As a preferred technical scheme of the utility model, the positioning mechanism comprises a positioning frame fixed to the tail end of the light shielding cylinder, and a putting-in cylinder connected to the light shielding cylinder is mounted in the positioning frame.

[0014] As a preferred technical scheme of the utility model, a rubber sleeve sealing the cylinder opening of the putting-in cylinder is mounted in front of the putting-in cylinder, and a cross-shaped insertion gap is arranged at the center of the rubber sleeve.

[0015] Compared with the prior art, the utility model provides a lens for observing three cores of an optical fiber, which has the following beneficial effects:

[0016] The utility model discloses a lighting lamp tube generates bright light to illuminate the observation end surface of the optical fiber, and the light condensing mirror uniformly condenses the illumination light at the optical fiber end surface, and the illumination piece can move left and right, so that the light can accurately irradiate on the optical fiber end surface, the situation of insufficient light or exposure is avoided, the clarity of optical fiber observation imaging is improved, and the optical fiber can be accurately observed and evaluated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the internal structure schematic diagram of the utility model;

[0019] Figure 3 It is the internal structure schematic diagram of the illumination piece of the utility model;

[0020] Figure 4 It is the structure schematic diagram of the light shielding cylinder of the utility model.

[0021] In the figure: 1, observation mirror body; 11, lens group; 12, focusing device; 2, light shielding cylinder; 21, movable port; 22, observation port; 23, sealing band; 24, magic tape; 3, illumination mechanism; 31, movable cylinder; 311, movable thread; 32, illumination part; 321, mounting ring; 322, reflecting ring; 323, illumination lamp tube; 324, transmission block; 325, condenser surface; 4, positioning mechanism; 41, positioning frame; 42, insertion cylinder; 43, rubber sleeve; 44, insertion notch. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0023] Please refer to Figures 1-4 The utility model discloses a lens for optical fiber three wire core observation, including observation mirror body 1, still including light shielding cylinder 2, illumination mechanism 3 and positioning mechanism 4, wherein:

[0024] The observation mirror body 1 is installed with focusing device 12 and lens group 11, the light shielding cylinder 2 is fixed in the end of observation mirror body 1;

[0025] The positioning mechanism 4 is arranged in the end of light shielding cylinder 2 and is used for positioning the optical fiber to be observed;

[0026] The illumination mechanism 3 includes the illumination part 32 arranged in the light shielding cylinder 2, and the illumination part 32 is movably connected in the light shielding cylinder 2 and is used for illuminating the end face of the optical fiber.

[0027] Please refer to the attached Figures 1-3 The illumination part 32 includes the mounting ring 321 and the reflecting ring 322, the mounting ring 321 is fixed in the reflecting ring 322, a plurality of illumination lamp tubes 323 are mounted on the outer wall of the mounting ring 321, and the reflecting ring 322 is provided with the condenser surface 325 matched with the illumination lamp tube 323 at the front end.

[0028] Specifically, the illumination lamp tube 323 generates illumination light to illuminate the end face of the optical fiber, and the condenser surface 325 focuses the illumination light together.

[0029] Further, the illumination lamp tubes 323 are arranged equidistantly in a ring shape on the outer wall of the mounting ring 321, the condenser surface 325 is an annular mirror surface arranged obliquely, and the condenser surface 325 corresponds to the illumination lamp tube 323.

[0030] Specifically, the illumination lamp 323 emits annular surface light, and the annular condenser 325 focuses the illumination light into a circular light circle corresponding to the fiber end surface, thereby uniformly illuminating the fiber end surface.

[0031] Further, the light shielding cylinder 2 is also provided with an observation port 22, and a closure band 23 capable of closing the observation port 22 is installed outside the observation port 22 through a magic tape 24. After the fiber is inserted, the position of the light focus and the position of the fiber can be observed through the observation port 22.

[0032] In the embodiment, the illumination mechanism 3 further comprises a movable cylinder 31 movably connected to the outer wall of the light shielding cylinder 2 and threadedly connected to the light shielding cylinder 2 through a movable thread 311. The outer wall of the reflecting ring 322 is symmetrically provided with a transmission block 324 fixedly connected to the inner wall of the movable cylinder 31. The light shielding cylinder 2 is symmetrically provided with a through movable port 21 movably connected to the transmission block 324. The movable port 21 is shielded by the movable cylinder 31. When the movable cylinder 31 is rotated, the movable cylinder 31 moves left and right, thereby driving the illumination member 32 to move left and right in the light shielding cylinder 2, so as to change the position of the illumination light circle. Embodiment two

[0033] Based on the above embodiment one, please refer to the attached Figure 4 The positioning mechanism 4 comprises a positioning frame 41 fixed to the end of the light shielding cylinder 2, and a putting-in cylinder 42 connected to the light shielding cylinder 2 is installed in the positioning frame 41. A rubber sleeve 43 closing the cylinder port of the putting-in cylinder 42 is installed in front of the putting-in cylinder 42, and a cross-shaped insertion gap 44 is arranged at the center of the rubber sleeve 43.

[0034] In the embodiment, the light can be stably inserted into the light shielding cylinder 2 through the putting-in cylinder 42 and the position of the fiber is fixed. When the fiber is inserted into the putting-in cylinder, the insertion gap 44 is pushed open. After the fiber is inserted, the rubber sleeve 43 can prevent external light from entering, so that the inside of the light shielding cylinder 2 is not affected by external light.

[0035] The working principle and use process of the utility model: in the observation, the end surface of the optical fiber to be observed is inserted from the rubber sleeve 43, the optical fiber is inserted into the putting cylinder 42 after the top opening is inserted into the gap 44, then the optical fiber passes through the putting cylinder 42 and enters the light shield, at this time, the lighting lamp 323 is started, the lighting lamp produces illumination light, the condenser lens 325 gathers the illumination light generated towards the direction of the optical fiber into a circular aperture, at this time, the closing belt 23 is opened, the position of the aperture and the position of the end surface of the optical fiber are observed through the observation port 22, then the movable cylinder 31 is rotated to make the movable cylinder 31 move left and right and drive the lighting part 32 to move left and right, at this time, the aperture moves left and right, the position of the aperture is adjusted to align with the end surface of the optical fiber, then the observation port 22 is closed by the closing belt 23, at this time, the end surface of the optical fiber can be observed, and the three wire cores of the end surface of the optical fiber are accurately imaged and evaluated and analyzed.

Claims

1. A lens for observing three-core optical fibers, comprising an observation lens body (1), characterized in that, It also includes a light-shielding tube (2), a lighting mechanism (3), and a positioning mechanism (4), wherein: The observation mirror body (1) is equipped with a focuser (12) and a lens group (11), and the light shield (2) is fixed at the end of the observation mirror body (1). The positioning mechanism (4) is located at the end of the light-shielding tube (2) and is used to position the optical fiber to be observed. The lighting mechanism (3) includes a lighting element (32) disposed inside the light-shielding tube (2), which is movably connected inside the light-shielding tube (2) for illuminating the end face of the optical fiber.

2. The lens for observing three-core optical fibers according to claim 1, characterized in that: The lighting element (32) includes a mounting ring (321) and a reflector ring (322). The mounting ring (321) is fixed inside the reflector ring (322). Multiple lighting tubes (323) are installed on the outer wall of the mounting ring (321). A focusing mirror (325) that cooperates with the lighting tubes (323) is installed at the front end of the reflector ring (322).

3. A lens for observing three-core optical fibers according to claim 2, characterized in that: The lighting tubes (323) are arranged in a ring at equal intervals on the outer wall of the mounting ring (321), and the focusing mirror (325) is an inclined ring-shaped mirror, which corresponds to the lighting tubes (323).

4. A lens for observing three-core optical fibers according to claim 3, characterized in that: The lighting mechanism (3) also includes a movable cylinder (31), which is movably connected to the outer wall of the light-shielding cylinder (2) and threadedly connected to the light-shielding cylinder (2) through a movable thread (311). A transmission block (324) is symmetrically installed on the outer wall of the reflective ring (322), and the transmission block (324) is fixedly connected to the inner wall of the movable cylinder (31). The light-shielding cylinder (2) is symmetrically provided with a through movable opening (21), and the transmission block (324) is movably connected to the movable opening (21). The movable opening (21) is blocked by the movable cylinder (31).

5. A lens for observing three-core optical fibers according to claim 1, characterized in that: The light-shielding tube (2) is also provided with an observation port (22), and a sealing strip (23) that can close the observation port (22) is installed outside the observation port (22) by Velcro (24).

6. A lens for observing three-core optical fibers according to claim 1, characterized in that: The positioning mechanism (4) includes a positioning frame (41) fixed at the end of the light-shielding tube (2), and an insertion tube (42) connected to the light-shielding tube (2) is installed inside the positioning frame (41).

7. A lens for observing three-core optical fibers according to claim 6, characterized in that: The front of the insertion tube (42) is fitted with a rubber sleeve (43) that closes the opening of the insertion tube (42), and the rubber sleeve (43) has a cross-shaped insertion notch (44) at the center.

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