CN219370053U - Multi-wavelength universal optical fiber collimator - Google Patents

Abstract

The utility model discloses a multi-wavelength universal optical fiber collimator which comprises a sleeve, wherein a lens support and an FC optical fiber connector are arranged on the inner side of the sleeve, an aspheric collimating lens is arranged on the inner side of the lens support, a channel penetrates through the outer peripheral surface of the sleeve, a fixing hole which is used for penetrating through the channel is formed in the outer peripheral surface of the lens support, and a locking screw which is used for being screwed in the fixing hole through the channel to fix the relative position of the sleeve and the lens support is inserted into the channel, and when the sleeve rotates relative to the lens support through the locking screw. The lens support and the sleeve are fixed through the locking screw, meanwhile, the channel and the wavelength scale are respectively arranged on the sleeve, the relative position between the lens support and the sleeve can be adjusted according to the position between the locking screw and the wavelength scale, and the optical fiber collimator can be adjusted to adapt to the wavelength corresponding to the current wavelength scale.

Description

Multi-wavelength universal optical fiber collimator

Technical Field

The utility model relates to a multi-wavelength universal optical fiber collimator.

Background

The fiber collimator is one of the passive devices commonly used in optical communication systems, and can change the divergent light beam emitted by the fiber into a parallel light beam through a collimating lens for output. The optical fiber collimator has the characteristics of low insertion loss, high return loss, long working distance, wide bandwidth, high stability, high reliability, small beam divergence angle, small volume, light weight and the like. However, when the wavelength of the light output from the optical fiber changes, the performance of the fiber collimator will be affected.

Although there is an adjustable optical fiber collimator in the market, the focusing process generally needs to build the best state of the tested optical path verification focusing, that is, one wavelength may need to be verified and focused once in the use process, so that the repeated focusing process is complicated when aiming at the use environments of multiple wavelengths.

Disclosure of Invention

The utility model mainly aims to provide a multi-wavelength universal optical fiber collimator which can adapt to the use environment of various wavelengths only by simple operation.

The aim of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a general type fiber collimator of multi-wavelength, includes the sleeve, telescopic inboard is provided with lens support and FC fiber connector, lens support's inboard is provided with aspheric collimating lens, telescopic outer peripheral face runs through has the passageway, lens support's outer peripheral face is provided with the fixed orifices that is used for lining up with the passageway, it has the locking screw that is used for tightening in the fixed orifices with fixed sleeve and lens support relative position through the passageway to alternate in the passageway, the sleeve is through locking screw when rotatory for the lens support, self also along axial displacement for the lens support, one side of passageway is provided with a plurality of wavelength scales, every the wavelength scale corresponds a wave band.

Preferably, the lens bracket and the FC optical fiber connector each include a first portion and a second portion that are distributed adjacently left and right, and the fixing hole is disposed on an outer peripheral surface of the second portion of the lens bracket.

Preferably, the aspheric collimating lens is disposed inside the first portion of the lens holder.

Preferably, the first portion of the lens holder and the second portion of the FC optical fiber connector are each provided with external threads on the outer peripheral surface.

Preferably, the lens support and the FC optical fiber connector are spaced apart from each other.

Preferably, the number of the wavelength scales is six, and the wavelength scales are positioned in the wavelength band range of 543 mm-1550 nm.

Preferably, the channels are arc-shaped channels, and the two ends of the channels are distributed in a left-right staggered mode.

The beneficial technical effects of the utility model are as follows: the lens support and the sleeve are fixed through the locking screw, meanwhile, the channel and the wavelength scale are respectively arranged on the sleeve, the relative position between the lens support and the sleeve can be adjusted according to the position between the locking screw and the wavelength scale, and the optical fiber collimator can be adjusted to adapt to the wavelength corresponding to the current wavelength scale.

Drawings

FIG. 1 is a schematic cross-sectional view of a fiber collimator according to an embodiment of the utility model;

FIG. 2 is a schematic top view of a fiber collimator according to an embodiment of the utility model;

fig. 3 is an enlarged schematic view of a wavelength scale according to an embodiment of the present utility model.

In the figure: 1-sleeve, 2-lens support, 3-FC fiber connector, 4-aspheric collimating lens, 5-locking screw, 601-channel, 602-fixed hole, 7-wavelength scale.

Detailed Description

In order to make the technical solution of the present utility model more clear and obvious to those skilled in the art, the present utility model will be described in further detail with reference to examples and drawings, but the embodiments of the present utility model are not limited thereto.

As shown in fig. 1-3, the multi-wavelength universal optical fiber collimator provided in this embodiment includes an aspheric collimating lens 4, a lens support 2, a sleeve 1, an FC optical fiber connector 3 and a locking screw 5, wherein the outer wall surface of the sleeve 1 is marked with wavelength scales 7, and six common laser wavelength identifiers (i.e. six wavelength scales 7) are provided from 405-1550nm bands (sequentially 543mm, 633nm, 780nm, 1064nm, 1310nm and 1550nm, and their distribution positions are shown in fig. 1 and 3);

an arc-shaped channel 601 is penetrated inwards through the outer wall of the sleeve 1, the two ends of the arc-shaped channel are distributed in a left-right staggered way, the locking screw 5 is inserted in the arc-shaped channel, the arc-shaped channel and six wavelength scales are adjacently distributed, and when the locking screw 5 and one wavelength scale are adjacently distributed along the axial direction of the lens bracket 2, the wavelength of the current wave band can be adapted;

the lens bracket 2 comprises a first part and a second part which are distributed adjacently left and right, wherein the second part is attached to the inner wall of the sleeve 1, the outer wall of the second part is provided with a fixing hole 602, the fixing hole 602 is a threaded hole, a locking screw 5 inserted in the arc-shaped channel can be screwed into the threaded hole, and the locking screw 5 can fix the position between the sleeve 1 and the lens bracket 2 after being screwed in the threaded hole;

the aspheric collimating lens 4 is positioned at the inner side of the first part of the lens bracket 2, and the aspheric collimating lens 4 and the lens bracket 2 can be fixed together in a dispensing fixing mode;

rotating the sleeve 1 to enable the locking screw 5 to be positioned at the wavelength position of the debugging laser (for example, 405 mark), screwing the locking screw 5 to fix, and fixing the position of the sleeve 1 relative to the lens bracket 2, wherein the sleeve 1 is rotated by a small angle relative to the previous position and is axially offset relative to the first part of the lens bracket 2;

the FC optical fiber connector 3 comprises a first part and a second part which are adjacent left and right, the first part of the FC optical fiber connector 3 is connected in the sleeve 1, and a debugging laser is connected for debugging, so that after the divergence angle of parallel light beams is minimum, the FC optical fiber connector 3 and the sleeve 1 are fixed in a dispensing mode, and the lens bracket 2 and the FC optical fiber connector are distributed at intervals left and right;

if the wavelength of the laser is changed, the sleeve 1 can be used by only loosening the locking screw 5, rotating the sleeve 1 to the corresponding wavelength position of the laser and then tightening the locking screw 5 for fixing, and the sleeve 1 is axially offset relative to the lens bracket 2 or left or right during the rotating process of the sleeve 1.

In this embodiment, the position corresponding to the wavelength identifier on the sleeve 1 may be focused multiple times in the production process in advance, the position of the sleeve 1 in the best state relative to the lens support 2 when the current wave band is marked in the focusing process, and multiple wave bands are verified to mark multiple wavelength scales on the sleeve 1, so that the device can switch the use of multiple wavelengths of the use field Jing Manzu by rotating the sleeve 1 after only needing to be adjusted at one wavelength position in use, without repeated debugging in the use process.

In the present embodiment, when the FC optical fiber connector 3 moves rotationally with respect to the lens holder 2 along with the sleeve 1, the correspondence relationship between the distance between the FC optical fiber connector 3 and the aspherical collimator lens 4 and the wavelength (the current distance is adapted to the current wavelength) is as follows:

. In summary, in the present embodiment, the lens holder 2 and the sleeve 1 provided in the present embodiment are fixed by the locking screw 5, and meanwhile, the channel 601 and the wavelength scale 7 are respectively disposed on the sleeve 2, so that the relative position between the lens holder 2 and the sleeve 1 can be adjusted according to the position between the locking screw 5 and the wavelength scale 7, that is, the optical fiber collimator can be adjusted to adapt to the wavelength corresponding to the current wavelength scale.

The above description is merely a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art will be able to apply equivalents and modifications according to the technical solution and the concept of the present utility model within the scope of the present utility model disclosed in the present utility model.

Claims (7)

1. A multi-wavelength universal optical fiber collimator is characterized in that: including sleeve (1), the inboard of sleeve (1) is provided with lens support (2) and FC fiber connector (3), the inboard of lens support (2) is provided with aspheric collimating lens (4), the outer peripheral face of sleeve (1) runs through has passageway (601), the outer peripheral face of lens support (2) is provided with fixed orifices (602) that are used for lining up with passageway (601), alternate in passageway (601) have be used for tightening up in fixed orifices (602) with locking screw (5) of fixed sleeve (1) and lens support (2) relative position, sleeve (1) also follow axial displacement for lens support (2) through locking screw (5) when rotatory, one side of passageway (601) is provided with a plurality of wavelength scales (7), every wavelength scale (7) correspond a wave band.

2. The multi-wavelength generic fiber collimator of claim 1, wherein: the lens support (2) and the FC optical fiber connector (3) comprise a first part and a second part which are distributed adjacently left and right, and the fixing hole (602) is formed in the outer circumferential surface of the second part of the lens support (2).

3. The multi-wavelength generic fiber collimator of claim 2, wherein: the aspheric collimating lens (4) is arranged inside the first part of the lens support (2).

4. The multi-wavelength generic fiber collimator of claim 2, wherein: the first part of the lens bracket (2) and the second part of the FC optical fiber connector (3) are provided with external threads on the peripheral surfaces.

5. The multi-wavelength generic fiber collimator of claim 1, wherein: the lens support (2) and the FC optical fiber connector (3) are distributed at left and right intervals.

6. The multi-wavelength generic fiber collimator of claim 1, wherein: the number of the wavelength scales (7) is six, and the wavelength scales are positioned in the wavelength band range of 543 mm-1550 nm.

7. The multi-wavelength generic fiber collimator of claim 1, wherein: the channels (601) are arc-shaped channels, and the two ends of the channels are distributed in a left-right staggered mode.