CN102890322B - Alignment adjusting device of optical fiber collimators - Google Patents

Abstract

The invention relates to an alignment adjustment device for an optical fiber collimator. In the invention, a distance adjustment guide rail mechanism and an alignment adjustment guide rail mechanism perpendicular to each other are arranged on a base, and the extension line of the distance adjustment guide rail mechanism is aligned with the alignment adjustment guide rail mechanism. Intersect, so that the motion trajectory of the distance adjustment slider and the alignment adjustment slider are distributed in a T shape, and the distance adjustment slider and the alignment adjustment slider are set at the same height and used to make the extension direction of the fiber collimator mutually Parallel or coincident fastening structure, so that the distance and alignment can be adjusted under the premise that the height of the two fiber collimators is consistent and the extension directions are parallel or coincident with each other, thus solving the problem of fiber collimation in the prior art. Difficult alignment problems.

Description

Fiber collimator alignment adjustment device

technical field

The invention relates to the technical field of optical communication, in particular to an alignment adjustment device for an optical fiber collimator.

Background technique

The fiber collimator is an optical passive device, which is composed of an optical fiber and a self-focusing lens. It can convert the light output from the optical fiber into parallel light, and can also couple the parallel light from the outside into the optical fiber. In the field of optical absorption gas sensors, the paired use of fiber optic collimators is a very common optical coupling method. The alignment adjustment effect of two fiber optic collimators and the distance between them have a great influence on the coupling efficiency of light and the sensor performance. The detection sensitivity has a direct impact, but since there is no corresponding special device to align the light collimator in the prior art, the alignment difficulty and low precision of the light collimator are caused, which further reduces the optical fiber collimation. The relevant performance of the device.

Contents of the invention

The invention provides an alignment adjustment device for an optical fiber collimator, aiming at solving the problem of difficult alignment of the optical fiber collimator in the prior art.

The technical scheme of the fiber collimator alignment adjusting device of the present invention is as follows:

An optical fiber collimator alignment adjustment device, comprising a base, a distance adjustment slider and an alignment adjustment slider installed on the base, the distance adjustment slider and the alignment adjustment slider are provided with the same height and use In the fastening structure that makes the extension directions of the fiber collimators parallel or coincident with each other, the distance adjustment slider and the base are guided in a straight line through a distance adjustment guide rail mechanism between the two, and the alignment adjustment slider and the base The base is guided and matched in a straight line through the alignment adjustment guide mechanism provided between the two. The distance adjustment guide mechanism and the alignment adjustment guide mechanism are arranged perpendicular to each other on the same side of the base, and the extension line of the distance adjustment guide mechanism Intersects the alignment adjustment rail mechanism.

The alignment adjustment guide rail mechanism includes a guide rail extending along a straight line and a guide groove along the guiding direction of the guide rail, and the guide groove is opened on the distance adjustment slider.

The distance adjustment guide rail mechanism includes a screw transmission mechanism for driving the alignment adjustment slider to move linearly and a stop structure for preventing the alignment adjustment slider from rotating with the screw transmission mechanism. block transmission connection, and the anti-rotation structure cooperates with the anti-rotation of the slider.

The screw transmission mechanism includes a lead screw and a lead screw nut. The two ends of the lead screw are provided with support seats for supporting the lead screw. The lead screw rotates around the extension direction of the lead screw through the bearings installed at its two ends. Assembled on the support base, the screw nut is located in the middle of the screw and fixed in the through hole provided on the alignment adjustment slider.

The anti-rotation structure includes a U-shaped guide groove arranged parallel to the lead screw and a slide block guided and matched with the U-shaped guide groove, and the slide block is fixed on the bottom of the alignment adjustment slide block.

The fastening structure includes an installation channel on the distance adjustment slider and the alignment adjustment slider for the fiber collimator to pass through, and a screw on the inner wall of the installation channel for locking or releasing the fiber collimator. The extension direction of the installation channel on the two mounting bases is parallel to or coincides with each other, and the extension direction of the fastening screw is perpendicular to the extension direction of the installation channel.

Locking screws for locking the positions of the distance adjustment slider and the alignment adjustment slider are respectively provided.

In the present invention, a mutually perpendicular distance adjustment guide rail mechanism and alignment adjustment guide rail mechanism are arranged on the base, and the extension line of the distance adjustment guide rail mechanism intersects with the alignment adjustment guide rail mechanism, so that the distance adjustment slider and the alignment adjustment slider The motion trajectory of the fiber collimator is distributed in a T shape, and a fastening structure with the same height and used to make the extension directions of the fiber collimator parallel or coincident is set on the distance adjustment slider and the alignment adjustment slider, so that when in use, the two On the premise that the heights of the optical fiber collimators are consistent and the extension directions are parallel or coincident with each other, the distance and alignment can be adjusted, thereby solving the problem of difficult alignment of the optical fiber collimators in the prior art.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a schematic cross-sectional view at A-A in Fig. 1 .

Detailed ways

Embodiment of the alignment adjustment device of the optical fiber collimator of the present invention: as shown in Fig. 1 to Fig. 3, the device comprises a base 23, a distance adjustment slider 10, an alignment adjustment slider 3, a distance adjustment rail mechanism 200 and Alignment adjustment guide rail mechanism 100, wherein, alignment adjustment guide rail mechanism 100 is formed by the guide groove that guide rail 2 and alignment adjustment slider bottom offer, distance adjustment guide rail mechanism 200 is made up of lead screw nut 10, lead screw 8, U-shaped guide groove 19 and the slide block arranged at the bottom of the distance adjustment slide block 10 constitute the distance adjustment rail mechanism 200. The screw nut and the lead screw 8 fixed in the middle through hole of the distance adjustment slide block in the distance adjustment guide rail mechanism 200 constitute a screw transmission for promoting the movement of the right mounting base. mechanism, and the U-shaped guide groove 19 cooperates with the slider provided at the bottom of the right mounting base to form the anti-rotation structure 300 for preventing the rotation of the right mounting base 3. The distance adjustment guide rail mechanism 200 and the alignment adjustment guide rail mechanism 100 are based on The same side of the seat 1 is arranged perpendicular to each other, and the extension line of the distance adjustment guide rail mechanism 200 intersects with the alignment adjustment guide rail mechanism 100, so that the distance adjustment guide rail mechanism 200 and the alignment adjustment guide rail mechanism 100 form a T-shaped structure, and in The distance adjustment slider 10 and the alignment adjustment slider 3 are respectively provided with a fastening structure 3-1 for fixing the position of the fiber collimator 4, and the fastening structure 3-1 is opened by the installation channel 3- 2 and the fastening screws 5 and 9 screwed on the inner wall of the installation channel 3-2, and the extension directions of the installation channels 3-2 opened on the two mounting seats 3 are parallel to each other, the two fastening structures 3-1 The connecting line is parallel to the plane where the distance adjustment guide rail mechanism 200 and the alignment adjustment guide rail mechanism 100 extend, that is, the height of the distance adjustment slider 10 and the fastening structure 3 - 1 provided on the alignment adjustment slider 3 are consistent.

The guide rail 2 is fixed on the base 23 by screws 14 and screws 22, and the alignment adjustment slider 3 can slide on the guide rail 2. When the alignment adjustment slider 3 slides to the required position, the locking screw 1 and the The locking screw 13 fixes the alignment adjustment slider 3 on the guide rail 2; the alignment adjustment slider 3 is processed with a hole for installing the fiber collimator 4, and the fiber collimator 4 is fixed on the alignment by the fastening screw 5. Adjust slider 3 on. Support seat 6 and support seat 25 are respectively fixed on the base 23 by screw 15, screw 21, screw 17 and screw 24; The axial direction is perpendicular to the direction of the guide rail 2. The screw nut 10 is processed with a hole for installing the fiber collimator 11, and the fiber collimator 11 is installed on the screw nut 10 through the fastening screw 9; The holes for installing the fiber collimator 4 on the slider 10 are located at the same height. The U-shaped guide groove 19 is fixed on the base 23 by screws 20 and screws 18. The U-shaped guide groove 19 is located directly below the lead screw 8 and is parallel to the lead screw 8; Reciprocating motion inside. The rotary handle 16 is fixed on the end of the lead screw 8 , the rotation of the lead screw 8 can be realized by turning the rotary handle 16 , and then the movement of the lead screw nut 10 along the U-shaped guide groove 19 can be realized.

In the present invention, when aligning and adjusting the fiber collimator 4, the alignment adjusting slider 3 is first adjusted to slide on the guide rail 2, so that the fiber collimator 4 and the fiber collimator 11 are on the same optical axis, and then the locking screw is tightened 1 and locking screw 13, so that the alignment adjustment slider 3 is fixed on the guide rail 2; by forward or reverse rotation of the handle 16, the forward and backward movement of the screw nut 10 is realized, so that the distance adjustment slider 10 is relatively aligned Adjust the slider 3 to move away from or close to, thereby adjusting the distance between the fiber collimator 4 and the fiber collimator 11 .

In the above-mentioned embodiments, the alignment adjustment guide rail mechanism is composed of a guide rail and a guide groove, and the distance adjustment guide rail mechanism is composed of a screw transmission mechanism and a non-rotation structure. In other embodiments, the two guide mechanisms can also be used interchangeably, or with The linear guide unit replaces two guide mechanisms.

In the above-mentioned embodiments, the fastening structure is the installation channel and the fastening screw. In other embodiments, the fastening structure can also be a card slot opened on the mounting base or used to prevent the fiber collimator from moving between the two guide mechanisms. The limit screws, clips or retaining rings that swing in the direction of extension, these structures are all prior art, so they will not be repeated here.

Claims (7)

1. an optical fiber collimator aligning regulating device, it is characterized in that: comprise pedestal, the distance adjustment slide block that pedestal is installed and aligning adjustment slide block, described distance adjustment slide block is provided with highly consistent and for making optical fiber collimator bearing of trend be parallel to each other or overlap fastening structure with on aligning adjustment slide block, described distance adjustment slide block and pedestal linearly lead by arranging between the two coordinate apart from adjusting guide rail mechanism, describedly aim at aligning that adjustment slide block and pedestal pass through to arrange between the two and adjust guide rail mechanism and linearly lead and coordinate, described distance adjustment guide rail mechanism adjusts that guide rail mechanism is mutually vertical in the same side of pedestal to be arranged with aiming at, and it is crossing to adjust guide rail mechanism apart from the extended line and aligning that adjust guide rail mechanism.

2. optical fiber collimator aligning regulating device according to claim 1, is characterized in that: described aim at adjustment guide rail mechanism comprise the guide rail that linearly extends and with the guide groove of guide rail along its guide direction, described guide groove is opened in be aimed on adjustment slide block.

3. optical fiber collimator aligning regulating device according to claim 1, it is characterized in that: described distance adjustment guide rail mechanism comprises for driving the screw-drive mechanism of distance adjustment slide block rectilinear movement and the spline structure for stoping distance adjustment slide block to rotate with screw-drive mechanism, described screw-drive mechanism adjusts slide block with distance and is in transmission connection, and described spline structure coordinates with slide block spline.

4. optical fiber collimator aligning regulating device according to claim 3, it is characterized in that: described screw-drive mechanism comprises leading screw and feed screw nut, the two ends of described leading screw are equiped with the supporting base for supporting leading screw, the bearing of trend of the bearing wrapping wire thick stick that described leading screw is installed by its two ends rotates and is assemblied on supporting seat, and described feed screw nut is in the middle part of leading screw and is fixed on apart from the through hole that adjustment slide block is offered.

5. optical fiber collimator aligning regulating device according to claim 3, is characterized in that: described spline structure comprises the U-shaped guide groove that be arranged in parallel with leading screw and to lead the slide block coordinated with U-shaped guide groove, and described slide block is fixed on the bottom of distance adjustment slide block.

6. optical fiber collimator aligning regulating device according to claim 1, it is characterized in that: described fastening structure comprise distance adjustment slide block and aim at adjustment slide block is offered on the installation passage that passes for optical fiber collimator and the inwall installing passage, revolve the trip bolt for locking or discharge optical fiber collimator established, the bearing of trend of the installation passage that distance adjustment slide block and aligning adjust on slide block is parallel to each other or overlaps, and the bearing of trend of described trip bolt is vertical with the bearing of trend installing passage.

7. optical fiber collimator aligning regulating device according to claim 1, is characterized in that: described distance adjustment slide block and aim at lock-screw adjustment slide block is respectively equipped with for locking both positions.