A lens-adjustable optical fiber collimator

Abstract

The utility model discloses a lens adjustable optical fiber collimator, include: the first end fixed lens of head fixed cover, the second end of head fixed cover sets up first threaded connection part, and the outer wall of head fixed cover sets up first bolt hole, the first end of intermediate fixed cover sets up with first threaded connection part corresponding second threaded connection part, and the outer wall of intermediate fixed cover sets up with first bolt hole corresponding second bolt hole, and the inside of tail fixed cover sets up first sleeve, and the inside fixed core of first sleeve and intermediate fixed cover, head fixed cover and intermediate fixed cover are connected through first threaded connection part and second threaded connection part and are connected in screw thread, and first bolt hole and second bolt hole are used for inserting fixed peg after adjusting the threaded connection distance of head fixed cover and intermediate fixed cover. The utility model can adjust the positional relationship between lens and the inside fixed core of first sleeve, and then improve the transmission efficiency and light power of optical fiber collimator.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic collimators, and in particular to a fiber optic collimator with adjustable lens. Background Technology

[0002] An optical fiber collimator is precisely assembled from a pigtail and a self-focusing lens. It converts transmitted light within the optical fiber into collimated (parallel) light, or couples external parallel (or nearly parallel) light into a single-mode fiber. While the structure of optical fiber collimators is trending towards miniaturization, current products still have many components, making assembly complex and hindering the adjustment of lens and ferrule positions during assembly. The positional relationship between the lens and ferrule affects the coupling between them, thus impacting transmission efficiency and optical power. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide an adjustable lens fiber collimator, which aims to provide a fiber collimator that facilitates lens adjustment and thus adjusts the positional relationship between the lens and the ferrule, thereby improving the transmission efficiency and optical power of the fiber collimator.

[0004] To achieve the above objectives, this utility model provides a lens-adjustable fiber optic collimator, the fiber optic collimator comprising:

[0005] The device comprises a head fixing sleeve, a middle fixing sleeve, and a tail fixing sleeve; a lens is fixed to the first end of the head fixing sleeve, a first threaded connection part is provided at the second end of the head fixing sleeve, and a first pin hole is provided on the outer wall of the head fixing sleeve; a second threaded connection part corresponding to the first threaded connection part is provided at the first end of the middle fixing sleeve, and a second pin hole corresponding to the first pin hole is provided on the outer wall of the middle fixing sleeve; a first sleeve is provided inside the tail fixing sleeve, and a core is fixed inside the first sleeve and the middle fixing sleeve.

[0006] The head fixing sleeve and the intermediate fixing sleeve are threadedly connected through the first threaded connection part and the second threaded connection part. The first pin hole and the second pin hole are used to insert fixing pins after the threaded connection distance between the head fixing sleeve and the intermediate fixing sleeve is adjusted.

[0007] Optionally, the first threaded connection portion and the second threaded connection portion are used to adjust the distance between the lens and the insert by adjusting the threaded connection distance.

[0008] Optionally, when the first threaded connection and the second threaded connection begin installation, the first pin hole and the second pin hole are aligned, and the thread is adjusted to an integer number of turns so that after the threaded connection is completed, the fixing pin fixes the head fixing sleeve and the intermediate fixing sleeve.

[0009] Optionally, the lens has a first inclined surface at its tail end, and the ferrule has a second inclined surface at its head end corresponding to the first inclined surface.

[0010] Optionally, the ferrule is provided with a first channel for fixing the optical fiber.

[0011] Optionally, the intermediate fixing sleeve includes a fixing cavity for fixing part of the insert, and another part of the insert is fixed inside the first sleeve.

[0012] Optionally, the second end of the intermediate fixing sleeve and the first end of the tail fixing sleeve are connected by threads, and the second end of the tail fixing sleeve is provided with an optical fiber inlet.

[0013] The beneficial effects of this utility model are as follows: 1. The threaded connection structure of the head fixing sleeve and the intermediate fixing sleeve allows the positional relationship between the lens and the ferrule to be adjusted by adjusting the threaded connection distance, effectively improving transmission efficiency and optical power. 2. This utility model also provides a first pin hole on the outer wall of the head fixing sleeve and a second pin hole corresponding to the first pin hole on the outer wall of the intermediate fixing sleeve. By inserting a first pin into the first and second pin holes to fix the head fixing sleeve and the intermediate fixing sleeve, it is ensured that the positional relationship between the lens and the ferrule will not move after adjustment, thereby improving the stability of the adjustment.

[0014] In summary, this invention can, on the one hand, adjust the positional relationship between the lens and the ferrule, thereby improving the transmission efficiency and optical power of the fiber optic collimator; on the other hand, it can ensure the stability of the adjustment and prevent rotation during use, which would affect the transmission efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a lens-adjustable fiber optic collimator according to a specific embodiment of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the head fixing sleeve in a specific embodiment of the present utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the intermediate fixing sleeve in a specific embodiment of the present utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the tail fixing sleeve in a specific embodiment of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the lens in a specific embodiment of the present invention;

[0020] Figure 6 This is a three-dimensional structural diagram of the insert in a specific embodiment of the present utility model;

[0021] Figure 7 This is a schematic diagram of the connection structure between the head fixing sleeve and the middle fixing sleeve in a specific embodiment of this utility model. Detailed Implementation

[0022] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0023] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0024] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0025] The applicant's research revealed that an optical fiber collimator is precisely composed of a pigtail and a self-focusing lens. It can convert transmitted light within the optical fiber into collimated light (parallel light), or couple external parallel (approximately parallel) light into a single-mode fiber. While the structure of optical fiber collimators is trending towards miniaturization, current products have numerous components, making assembly complex and hindering the adjustment of the lens and ferrule positions during assembly. The positional relationship between the lens and ferrule affects the coupling between them, thus impacting transmission efficiency and optical power. Existing technologies can adjust the positional relationship of the lens and ferrule, but fixing the lens is difficult and may lead to slippage.

[0026] Therefore, this embodiment of the invention provides an adjustable fiber optic collimator with lens 4, such as... Figure 1-7 As shown, the fiber optic collimator includes:

[0027] The head fixing sleeve 1, the middle fixing sleeve 2, and the tail fixing sleeve 3 are provided. A lens 4 is fixed at the first end of the head fixing sleeve 1, a first threaded connection part 5 is provided at the second end of the head fixing sleeve 1, and a first pin hole 6 is provided on the outer wall of the head fixing sleeve 1. A second threaded connection part 7 corresponding to the first threaded connection part 5 is provided at the first end of the middle fixing sleeve 2, and a second pin hole 8 corresponding to the first pin hole 6 is provided on the outer wall of the middle fixing sleeve 2. A first sleeve 9 is provided inside the tail fixing sleeve 3, and a core 10 is fixed inside the first sleeve 9 and the middle fixing sleeve 2.

[0028] The head fixing sleeve 1 and the intermediate fixing sleeve 2 are threadedly connected by the first threaded connection part 5 and the second threaded connection part 7. The first pin hole 6 and the second pin hole 8 are used to insert the fixing pin 11 after the threaded connection distance of the head fixing sleeve 1 and the intermediate fixing sleeve 2 is adjusted.

[0029] It should be noted that the present invention achieves positional adjustment between the lens 4 and the insert 10 through the rotatability of the threaded connection, thereby making the adjustment of the lens 4 and the insert 10 more convenient during assembly. Furthermore, the placement of the pin hole and the pin can fix the positional relationship between the lens 4 and the insert 10, ensuring the stability of the adjustment.

[0030] In this specific embodiment, the first threaded connection portion 5 and the second threaded connection portion 7 are used to adjust the distance between the lens 4 and the insert 10 by adjusting the threaded connection distance.

[0031] It should be noted that during the installation of the fiber optic collimator, the position of lens 4 typically needs to be adjusted. However, this adjustment method is not easily adaptable to situations where immediate changes may be required under different installation environments. Therefore, the structure of this invention effectively solves this problem, enabling real-time and on-demand adjustments.

[0032] In this specific embodiment, when the first threaded connection part 5 and the second threaded connection part 7 are installed, the first pin hole 6 and the second pin hole 8 are aligned, and the thread is adjusted to an integer number of turns so that after the threaded connection is completed, the fixing pin 11 fixes the head fixing sleeve 1 and the middle fixing sleeve 2.

[0033] It should be noted that this effectively ensures the alignment of the pin holes, allowing the head fixing sleeve 1 and the middle fixing sleeve 2 to be fixed in time after adjustment, ensuring a firm adjustment.

[0034] In this specific embodiment, the tail of the lens 4 is provided with a first inclined surface 12, and the head of the insert 10 is provided with a second inclined surface 13 corresponding to the first inclined surface 12.

[0035] In this specific embodiment, a first channel 14 is provided inside the ferrule 10, and the first channel 14 is used to fix the optical fiber.

[0036] In this specific embodiment, the intermediate fixing sleeve 2 includes a fixing cavity for fixing part of the insert 10, and another part of the insert 10 is fixed inside the first sleeve 9.

[0037] In this specific embodiment, the second end of the intermediate fixing sleeve 2 and the first end of the tail fixing sleeve 3 are connected by threads, and the second end of the tail fixing sleeve 3 is provided with an optical fiber inlet.

[0038] This embodiment of the utility model uses a threaded connection structure between the head fixing sleeve 1 and the middle fixing sleeve 2, which allows the positional relationship between the lens 4 and the insert 10 to be adjusted by adjusting the threaded connection distance, thereby effectively improving the transmission efficiency and optical power.

[0039] This embodiment of the invention also provides a first pin hole 6 on the outer wall of the head fixing sleeve 1, and a second pin hole 8 corresponding to the first pin hole 6 on the outer wall of the middle fixing sleeve 2. The head fixing sleeve 1 and the middle fixing sleeve 2 are fixed by inserting the first pin into the first pin hole 6 and the second pin hole 8. This ensures that the lens 4 and the ferrule 10 do not move after the positional relationship is adjusted, thereby improving the stability of the adjustment.

[0040] In summary, this embodiment of the invention can, on the one hand, adjust the positional relationship between the lens 4 and the ferrule 10, thereby improving the transmission efficiency and optical power of the fiber optic collimator; on the other hand, it can ensure the stability of the adjustment and avoid rotation during use, which would affect the transmission efficiency.

[0041] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A lens-adjustable fiber optic collimator, characterized in that, The fiber optic collimator includes: The device comprises a head fixing sleeve, a middle fixing sleeve, and a tail fixing sleeve; a lens is fixed to the first end of the head fixing sleeve, a first threaded connection part is provided at the second end of the head fixing sleeve, and a first pin hole is provided on the outer wall of the head fixing sleeve; a second threaded connection part corresponding to the first threaded connection part is provided at the first end of the middle fixing sleeve, and a second pin hole corresponding to the first pin hole is provided on the outer wall of the middle fixing sleeve; a first sleeve is provided inside the tail fixing sleeve, and a core is fixed inside the first sleeve and the middle fixing sleeve. The head fixing sleeve and the intermediate fixing sleeve are threadedly connected through the first threaded connection part and the second threaded connection part. The first pin hole and the second pin hole are used to insert fixing pins after the threaded connection distance between the head fixing sleeve and the intermediate fixing sleeve is adjusted.

2. The lens-adjustable fiber optic collimator according to claim 1, characterized in that, The first threaded connection and the second threaded connection are used to adjust the distance between the lens and the insert by adjusting the threaded connection distance.

3. The lens-adjustable fiber optic collimator according to claim 1, characterized in that, When the first threaded connection and the second threaded connection are installed, the first pin hole and the second pin hole are aligned, and the thread is adjusted to an integer number of turns so that after the threaded connection is completed, the fixing pin fixes the head fixing sleeve and the intermediate fixing sleeve.

4. The lens-adjustable fiber optic collimator according to claim 1, characterized in that, The lens has a first inclined surface at its tail end, and the ferrule has a second inclined surface at its head end that corresponds to the first inclined surface.

5. The lens-adjustable fiber optic collimator according to claim 1, characterized in that, The ferrule has a first channel for fixing the optical fiber.

6. The lens-adjustable fiber optic collimator according to claim 1, characterized in that, The intermediate fixing sleeve includes a fixing cavity for fixing part of the insert, and another part of the insert is fixed inside the first sleeve.

7. The lens-adjustable fiber optic collimator according to claim 1, characterized in that, The second end of the intermediate fixing sleeve and the first end of the tail fixing sleeve are connected by threads, and the second end of the tail fixing sleeve is provided with an optical fiber inlet.

Images