CN215005969U - Non-locking type optical switch - Google Patents

Abstract

The present application relates to an unlocking type optical switch, which includes: light path conversion component and switch drive component. The light path conversion assembly comprises a first light guide piece and a second light guide piece, the first light guide piece is provided with a first end face and a second end face which are opposite, the second light guide piece is provided with a third end face and a fourth end face which are opposite, and the second end face and the third end face are opposite to each other and are arranged in an adjacent mode. The switch driving assembly comprises a first driving piece, a second driving piece and a resetting piece, the second driving piece is arranged on the second light guide piece, the first driving piece is used for driving the second driving piece to move and drive the second light guide piece to move from an initial position to a target position, and when the second light guide piece is located at the target position, the resetting piece has an acting force which drives the second driving piece to move and drive the second light guide piece to move from the target position to the initial position. The light path switching component and the switch driving component are arranged to switch the light path, so that the advantage of saving the space of the non-locking optical switch is achieved.

Description

Non-locking type optical switch

Technical Field

The present application relates to the field of optical communication technologies, and in particular, to a non-locking optical switch.

Background

The optical switch is an important device for switching optical links, and has irreplaceable functions in the field of optical communication. Conventional optical switches are generally classified into mechanical optical switches, acousto-optic modulated optical switches, electro-optic modulated optical switches, micro-precision mechanical optical switches, and the like. Other types of optical switches besides mechanical optical switches have a great majority of markets because of their high cost, especially their poor performance-price ratio and competitiveness when the number of channels to be switched is small and the switching speed is not high.

The traditional mechanical optical switch mainly controls the optical path through a relay, fixes optical elements (a dioptric prism, a plane mirror and the like) of the optical path of the optical switch on an armature component of a common relay through extension transformation, and changes the transmission of the optical path by utilizing the switching movement of the armature in the working process of the relay, thereby realizing the switching of the optical path. In the optical switch with the traditional structure, the relay and the optical path of the optical element are arranged in the mutually vertical space to form a T-shaped structure, so that the space is large when the optical switch is used, and the optical structure and the optical path are difficult to arrange. In addition, the traditional mechanical optical switch is mainly subjected to extension modification on the traditional relay armature arm and is additionally provided with an optical element to realize the effect of optical path switching, the optimal working load state of the relay is damaged, the defects of long switching response time, high failure rate and poor reliability exist, and the mechanical optical switch has the problem of short service life due to the mechanical contact of the relay.

With the development of optical communication technology, the miniaturization and integration of all optical communication devices have become the development trend of updating various devices, and the traditional mechanical optical switch is more and more limited by use conditions due to relatively large volume and space waste of structural shape, and cannot meet the market demand.

Disclosure of Invention

The application aims at providing a non-locking type photoswitch, contains light path conversion subassembly and switch drive subassembly, can carry out non-locking type photoswitch's light path through switch drive subassembly drive light path conversion subassembly and switch, and then overcome the big problem of current photoswitch T font structure occupation space.

In order to achieve the purpose, the following technical scheme is adopted in the application:

an unlocked optical switch comprising: the light path conversion component and the switch driving component; the light path conversion component comprises a first light guide piece and a second light guide piece, wherein the first light guide piece is provided with a first end surface and a second end surface which are opposite, the second light guide piece is provided with a third end surface and a fourth end surface which are opposite, the second end surface and the third end surface are opposite and adjacent, when a gap exists between the second end surface and the third end surface, light beams in the first light guide piece deflect at the second end surface and then enter the second light guide piece through the third end surface, or light beams in the second light guide piece deflect at the third end surface and then enter the first light guide piece through the second end surface; the switch driving assembly comprises a first driving piece, a second driving piece and a reset piece, the second driving piece is arranged on the second light guide piece, the first driving piece is used for driving the second driving piece to move and drive the second light guide piece to move from an initial position to a target position, when the second light guide piece is at the initial position and the target position, a gap with different sizes is formed between the second end face of the first light guide piece and the third end face of the second light guide piece, and when the second light guide piece is located at the target position, the reset piece has an acting force which drives the second driving piece to move and drive the second light guide piece to move from the target position to the initial position.

Preferably, the second end surface of the first light guide member and the third end surface of the second light guide member are respectively wedge-shaped surfaces, and when the second end surface of the first light guide member and the third end surface of the second light guide member are attached, the light beam in the first light guide member does not deflect and enters the second light guide member when passing through the second end surface and the third end surface, or the light beam in the second light guide member does not deflect and enters the first light guide member when passing through the third end surface and the second end surface.

Preferably, the first driving element and the reset element are respectively disposed on two sides of the second driving element along the optical path direction, or the first driving element and the reset element are respectively disposed on the same side of the second driving element along the optical path direction.

Preferably, a magnetic acting force is formed between the first driving piece and the second driving piece, and a magnetic acting force and/or an elastic acting force is formed between the resetting piece and the second driving piece.

Preferably, the non-locking type optical switch further comprises a sleeve assembly including: the second end face of the first light guide piece and the third end face of the second light guide piece are accommodated in the light guide piece sleeve, the fourth end face of the second light guide piece is positioned outside the light guide piece sleeve, and the second light guide piece and the light guide piece sleeve are in clearance fit; the driving piece sleeve pipe is connected with the light guide piece sleeve pipe, the second driving piece is located in the driving piece sleeve pipe, the first driving piece is arranged on the light guide piece sleeve pipe, and the reset piece is close to the driving piece sleeve pipe or arranged in the driving piece sleeve pipe.

Preferably, the first driving piece is an electromagnet sleeved outside the light guide piece sleeve, the second driving piece is a permanent magnet, and the resetting piece is an elastic piece or a permanent magnet.

Preferably, the electromagnet of the first driving piece comprises an electromagnetic coil and an iron core, the iron core is sleeved outside the light guide piece sleeve, and the electromagnetic coil is sleeved outside the iron core.

Preferably, the drive member sleeve is a magnetically conductive sleeve.

Preferably, first driving piece is the electro-magnet of cover establishment outside the light guide sleeve, the electro-magnet of first driving piece includes solenoid and iron core, the iron core cover is established outside the light guide sleeve, solenoid cover establishes outside the iron core, the second driving piece be with the permanent magnet that iron core magnetism was inhaled mutually, the iron core is multiplexing to be the piece that resets, the sheathed tube material of driving piece can be magnetic conductivity or non-magnetic conductivity material.

Preferably, the elastic member of the return member is a compression spring or an extension spring or a return elastic air bag.

Preferably, the light guide sleeve is provided with a first positioning portion, the second light guide is provided with a second positioning portion, and the first positioning portion and the second positioning portion are matched to guide the second light guide to move along a preset direction when the second light guide moves.

Preferably, the first positioning portion is a guide groove or a guide hole provided in the light guide sleeve, and the second positioning portion is a flat key provided in the second light guide.

Preferably, the light guide sleeve is provided with a gas guide hole located between the second end face and the third end face.

Preferably, the non-locking optical switch further includes an optical path input/output device, the optical path input/output device includes a first optical fiber, a second optical fiber and a converging lens, the first optical fiber is disposed adjacent to the first end face of the first light guide, the second optical fiber is disposed adjacent to the fourth end face of the second light guide, the converging lens is disposed between the optical fiber head of the first optical fiber and the first end face of the first light guide, and the light beam of the optical fiber head of the first optical fiber is converged onto the end face of the optical fiber head of the second optical fiber after passing through the converging lens, the first light guide and the second light guide.

Preferably, the first optical fiber is a single-fiber optical fiber head, and the second optical fiber is a double-fiber optical fiber head.

Preferably, in the working process of the second light guide member, a gap is always formed between the second end face of the first light guide member and the third end face of the second light guide member.

Compared with the prior art, the beneficial effects of this application include at least:

the utility model provides a non-locking type photoswitch that contains light path conversion module and switch drive assembly can realize non-locking type photoswitch's light path through switch drive assembly drive light path conversion module and switch, and above-mentioned structure has the advantage of saving the photoswitch space, can realize the effect of non-locking type photoswitch whole miniaturization.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of an unlocking type optical switch provided in an embodiment of the present application;

fig. 2 is a schematic structural view of the non-locking type optical switch of fig. 1 in another operation state;

fig. 3 is a schematic structural diagram of another non-locking optical switch provided in the embodiments of the present application;

fig. 4 is a schematic optical path diagram of a switching case (1) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 5 is a schematic diagram of an optical beam output from a first optical fiber in the switching case (1) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 6 is a schematic diagram of a light beam output to a second optical fiber in the switching case (1) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 7 is a schematic optical path diagram of a switching case (2) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 8 is a schematic diagram of an optical beam output from a first optical fiber in the switching case (2) of the non-locking type optical switch provided by the embodiment of the present application;

fig. 9 is a schematic diagram of a light beam output to a second optical fiber in the switching case (2) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 10 is a schematic optical path diagram of a switching case (3) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 11 is a schematic diagram of an optical beam output from a first optical fiber in the switching case (3) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 12 is a schematic diagram of a light beam output to a second optical fiber in the switching case (3) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 13 is a schematic optical path diagram of a switching case (4) of the non-locking type optical switch provided in the embodiment of the present application;

fig. 14 is a schematic diagram of an optical beam output from a first optical fiber in the switching case (4) of the non-locking type optical switch provided by the embodiment of the present application;

fig. 15 is a schematic diagram of light beams output to the second optical fiber in the switching case (4) of the non-locking type optical switch provided in the embodiment of the present application.

The figure is as follows:

1. an optical path conversion component; 11. a first light guide; 12. a second light guide; 111. a first end face; 112. a second end face; 113. a third end face; 114. a fourth end face;

2. a switch drive assembly; 21. a first driving member; 22. a second driving member; 23. a reset member; 211. an electromagnetic coil; 212. an iron core;

3. a bushing assembly; 31. a light guide sleeve; 32. a drive member bushing;

41. a first optical fiber; 42. a second optical fiber; 43. a converging lens; 411. a first fiber optic head; 421. a second fiber optic head; 422. and a third fiber head.

Detailed Description

The present application is further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the present application, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1 and 2, the present application relates to an unlocking type optical switch including an optical path conversion member 1 and a switch driving member 2. The non-locking type optical switch shown in fig. 1 and 2 may be a free space non-locking type optical switch.

The light path conversion assembly 1 includes a first light guide 11 and a second light guide 12. The first light guide 11 has a first end surface 111 and a second end surface 112 opposite to each other, the first end surface 111 of the first light guide 11 can be used for inputting or outputting a light beam, the second light guide 12 has a third end surface 113 and a fourth end surface 114 opposite to each other, the fourth end surface 114 of the second light guide 12 can be used for inputting or outputting a light beam, the second end surface 112 and the third end surface 113 are disposed opposite to and adjacent to each other, and the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 can be regular surfaces or irregular surfaces, such as wedge surfaces, arc surfaces, and the like. That is to say, when there is a gap between the second end surface 112 and the third end surface 113, the light beam in the first light guide 11 is deflected at the second end surface 112 and then enters the second light guide 12 through the third end surface 113; the light beam in the second light guide 12 may also be deflected at the third end surface 113 and then enter the first light guide 11 through the second end surface 112.

The switch drive assembly 2 comprises a first driver 21, a second driver 22 and a reset element 23. The second driving member 22 is disposed on the second light guide 12, for example, the second driving member 22 is sleeved and fixed on the second light guide 12, the first driving member 21 is used for driving the second driving member 22 to move and driving the second light guide member 12 to move from the initial position to the target position, when the second light guide 12 is at the initial position and the target position, a gap with different sizes is formed between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12, and specifically, when the second light guide 12 is located at the target position, a gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 may be larger than a gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 at the initial position, or may be smaller than a gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 at the initial position.

Take fig. 1 as an initial position and fig. 2 as a target position as an example. The first light guide 11 and the second light guide 12 are formed of materials having the same refractive index. Referring to fig. 1, a light beam is input from a first end surface 111 of a first light guide 11 and output from a fourth end surface 114 of a second light guide 12, and since a second end surface 112 of the first light guide 11 and a third end surface 113 of the second light guide 12 are directly attached to each other, there is no optical path deviation in the transmission of the first light guide 11 and the second light guide 12, so that the light beam linearly passes through the first light guide 11 and the second light guide 12 and is output from a point a of the fourth end surface 114 of the second light guide 12. Referring to fig. 2, after the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 are kept at a certain distance, because an air gap exists between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12, because the air gap is different from the refractive indexes of the first light guide 11 and the second light guide 12, the light beams passing through the first light guide 11 and the second light guide 12 are deflected at the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12, respectively, and the light beams are output from the point b of the fourth end surface 114 of the second light guide 12. Through the above process, the position of the output point of the light beam at the fourth end surface 114 is shifted from the point a output position to the point b output position, and the switching of the light beam from the point a to the point b at the output end is realized.

When the second light guide 12 is located at the target position, the reset member 23 has an acting force for driving the second driving member 22 to move and driving the second light guide 12 to move from the target position to the initial position. Specifically, when the second light guide 12 is located at the target position and the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 is larger than the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 at the initial position, the reset member 23 has an acting force that causes the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 to decrease; when the second light guide 12 is located at the target position and the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 is smaller than the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 at the initial position, the reset member 23 has an acting force that increases the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12.

Therefore, the distance between the first light guide 11 and the second light guide 12 can be adjusted through the structure, namely, the size of the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 is adjusted, so that the purpose of adjusting the conversion offset distance of the output light beam relative to the input light beam can be achieved. Because the light path conversion component 1 and the switch driving component 2 are not limited to the arrangement of the mutually vertical space arrangement mode, the structure has the advantage of saving the space of the non-locking optical switch, and the effect of integrally miniaturizing the non-locking optical switch can be realized. The reset piece 23 is arranged to reset the second light guide 12 to the initial position when the first driving piece 21 stops driving, that is, when the second light guide 12 is located at the target position, the reset piece 23 can drive the second driving piece 22 to move and drive the second light guide 12 to move from the target position to the initial position, so that the non-locking function of the non-locking optical switch is realized without adding additional devices.

In practical applications, the optical path switching of the non-locking optical switch by the optical path switching unit driven by the switch driving unit may be realized by using fig. 2 as an initial position and fig. 1 as a target position, thereby achieving an effect of miniaturizing the whole non-locking optical switch.

In a preferred embodiment, the first light guide 11 and the second light guide 12 may be a rectangular parallelepiped or a cylindrical structure, the first light guide 11 and the second light guide 12 are preferably formed of a material having a uniform refractive index, such as glass or quartz, and the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 are wedge-shaped surfaces. When the second end surface 112 of the first light guide 11 is attached to the third end surface 113 of the second light guide 12, the light beam in the first light guide 11 does not deflect and enters the second light guide 12 when passing through the second end surface 112 and the third end surface 113. According to the reversibility of the optical path, the light beam in the second light guide 12 may not be deflected when passing through the third end surface 113 and the second end surface 112 and enter the first light guide 11. The non-locking type optical switch formed by the structure is of a linear or straight-line structure, is more compact in structure and can be applied to various occasions. When the second end surface 112 of the first light guide 11 is attached to the third end surface 113 of the second light guide 12, the non-locking optical switch can be made more compact and save more space.

The first driving member 21 and the reset member 23 may be respectively disposed at both sides of the second driving member 22 in the optical path direction. The first driving member 21 and the reset member 23 may be disposed on the same side of the second driving member 22 in the optical path direction. The first driving member 21 and the reset member 23 mainly provide driving forces to the second driving member 22 in different directions to control the size of the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12. The non-locking type optical switch can be applied to more occasions by arranging the first driving member 21 and the reset member 23 at different positions as required.

In a preferred embodiment, the force between the first driving member 21 and the second driving member 22 is a magnetic force, and the force between the reset member 23 and the second driving member 22 is a magnetic force and/or an elastic force. When the driving force of the first driving member 21 to the second driving member 22 is a magnetic force, the switching speed of the non-locking type optical switch is higher than that of a mechanical force driving, the reliability is better, and the service life is longer because a force application object and a force receiving object of the magnetic force do not need to be in direct contact.

Specifically, taking fig. 1 as an initial state and fig. 2 as an objective state as an example, in fig. 1 and fig. 2, when the first driving element 21 and the resetting element 23 are respectively disposed on the same side of the second driving element 22, in an initial position, the first driving element 21 generates a magnetic repulsive force for driving the second driving element 22 to move, and in an objective position, the resetting element 23 generates a magnetic attraction force or an elastic attraction force for driving the second driving element 22 to move; when the first driving member 21 and the reset member 23 are respectively disposed at two sides of the second driving member 22 (not shown), in the initial position, the first driving member 21 generates a magnetic repulsive force for driving the second driving member 22 to move, and in the target position, the reset member 23 generates a magnetic repulsive force or an elastic repulsive force for driving the second driving member 22 to move.

As shown in fig. 1, the non-locking optical switch may further include a sleeve assembly 3, and the sleeve assembly 3 may be integrally formed, or may be a combination of a light guide sleeve 31 and an actuator sleeve 32. When the sleeve assembly 3 is a combination form including the light guide sleeve 31 and the driving member sleeve 32, the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 are accommodated in the light guide sleeve 31, so that foreign matters in an external environment are prevented from entering a gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12. The first end surface 111 of the first light guide 11 and the fourth end surface 114 of the second light guide 12 are located outside the light guide sleeve 31, and the second light guide 12 and the light guide sleeve 31 may be in clearance fit, so that the second light guide 12 may move along the axial direction of the light guide sleeve 31, and friction between the second light guide 12 and the sleeve 3 when the second light guide 12 is driven to move by the second driving member 22 may be avoided. Light pipe sleeve 31 is connected to driving piece sleeve 32, second driving piece 22 is located driving piece sleeve 32, first driving piece 21 sets up on light pipe sleeve 31, and first driving piece 21 for example cup joints and fixes on light pipe sleeve 31, the structure that light pipe sleeve 31 and driving piece sleeve 32 components of a whole that can function independently is set to sleeve subassembly 3 and the equipment and the later maintenance of non-locking type photoswitch of being more convenient for. The reset member 23 is disposed near the driving member sleeve 32 or inside the driving member sleeve 32, so that the volume of the non-locking type optical switch can be reduced compared with the case where the reset member 23 is disposed at the periphery of the driving member sleeve 32.

In a preferred embodiment, as shown in fig. 1, the first driving member 21 may be an electromagnet sleeved outside the light guide sleeve 31, the second driving member 22 may be a permanent magnet, and the reset member 23 may be an elastic member or a permanent magnet. When the reset piece 23 is a permanent magnet, the reset piece 23 may be embedded on the end surface of the light guide sleeve 31 or the inner wall of the driver sleeve 32. When the first driving member 21 is an electromagnet, the electromagnet of the first driving member 21 may include an electromagnetic coil 211 and an iron core 212, the iron core 212 is sleeved outside the light guide sleeve 31, and the electromagnetic coil 211 is sleeved outside the iron core 212. In use, as an example, the first driving member 21 separates the first light guide member 11 from the second light guide member 12 due to the magnetic field generated by the electromagnetic coil 211 being energized, and after the electromagnetic coil 211 being de-energized, the second driving member 22 and the second light guide member 12 are reset by the reset member 23, and the second light guide member 12 approaches the first light guide member 11; or, as another example, the first driving member 21 generates a magnetic field due to the electromagnetic coil 211 being energized to make the first light guide member 11 and the second light guide member 12 approach each other, and after the electromagnetic coil 211 is de-energized, the second driving member 22 and the second light guide member 12 are reset by the reset member 23, and the second light guide member 12 is separated from the first light guide member 11. That is, with the non-lock type optical switch of the present application, after the electromagnetic coil 211 is de-energized, the non-lock type optical switch can be restored to the operation state before the energization, and the electromagnetic coil 211 has different operation states in the energization and de-energization states.

The driving member sleeve 32 may be a magnetic conductive sleeve, and when the driving member sleeve 32 is a magnetic conductive sleeve, the magnetic field emitted by the driving member sleeve 32 can be directed to the concentrated direction, so that the magnetic induction intensity of the second driving member 22 is increased, and the driving effect of the first driving member 21 on the second driving member 22 is enhanced.

In a preferred embodiment, the first driving member 21 is an electromagnet sleeved outside the light guide sleeve 31, the electromagnet of the first driving member 21 includes an electromagnetic coil 211 and an iron core 212, the iron core 212 is sleeved outside the light guide sleeve 31, the electromagnetic coil 211 is sleeved outside the iron core 212, the second driving member 22 is a permanent magnet magnetically attracted to the iron core 212, and the iron core 212 is reused as the reset member. The driving member sleeve 32 may be made of a magnetic material or a non-magnetic material, preferably a non-magnetic material, the driving member sleeve 32 made of the non-magnetic material is not magnetized by the reset member 23, and no force is applied between the reset member 23 and the driving member sleeve 32 after the first driving member 21 is powered on or powered off. Before the electromagnetic coil 211 is powered on, the iron core 212 which is reused as the reset piece enables the first light guide piece 11 and the second light guide piece 12 to approach through the magnetic attraction acting force to the second driving piece 22; after the electromagnetic coil 211 is electrified, the electromagnetic coil 211 generates a magnetic field and separates the first light guide member 11 from the second light guide member 12; after the electromagnetic coil 211 is powered off, the iron core 212 which is reused as the reset piece magnetically attracts the second driving piece 22, so that the first light guide piece 11 and the second light guide piece 12 are close to each other again, and the reset of the second light guide piece 12 is completed. The iron core 212 which is reused as the reset piece acts on the acting force in the reset direction of the second driving piece 22 after the electromagnet of the first driving piece 21 is powered off so as to complete the reset of the second driving piece 22 and the second light guide piece 12, and the weight of the non-locking optical switch can be reduced under the condition that the purpose of resetting the second light guide piece 12 of the non-locking optical switch is achieved.

The elastic member of the reset member 23 may be a compression spring, an extension spring, or a resettable elastic airbag, one end of the compression spring, the extension spring, or the resettable elastic airbag may be fixed to the inner wall of the light guide sleeve 31 or the inner wall of the driving member sleeve 32, the other end of the compression spring, the extension spring, or the resettable elastic airbag is configured to abut against the second driving member 22, and when the second light guide 12 is located at the target position, the reset member 23 may provide a force to the second driving member 22, which is directed to the initial position. When the reset member 23 is a passive device such as a compression spring, an extension spring, or a resettable elastic airbag, the reset member 23 of the non-locking optical switch may not be affected by external power, and the reset member 23 may provide driving force to the second driving member 22 at any time to move the second light guide member 12 to the initial position.

In order to prevent the second light guide 12 from rotating radially during the movement, a first positioning portion (not shown) may be disposed on the light guide sleeve 31, and a second positioning portion (not shown) may be disposed on the second light guide 12, and the first positioning portion and the second positioning portion cooperate to guide the second light guide 12 to move along a predetermined direction when the second light guide 12 moves. Preferably, the first positioning portion is a guide groove or a guide hole provided on the light guide sleeve 31, the guide groove may be provided on an inner wall of the light guide sleeve 31, the guide hole may penetrate through the inner wall and an outer wall of the light guide sleeve 31, the second positioning portion is a flat key provided on the second light guide 12, and the flat key may be provided on an outer wall of the second light guide 12. Meanwhile, the guide holes can guide out the gas between the first light guide member 11 and the second light guide member 12 when the first light guide member 11 and the second light guide member 12 approach each other, so that the size of the gap between the second end surface 112 of the first light guide member 11 and the third end surface 113 of the second light guide member 12 can be smoothly adjusted. Alternatively, the first positioning portion may be a flat key provided on the inner wall of the light guide sleeve 31, and the second positioning portion may be a guide groove or a guide hole provided on the second light guide 12.

Similarly, the light guide sleeve 31 may be provided with a gas hole between the second end surface 112 and the third end surface 113, and the gas hole guides gas between the first light guide 11 and the second light guide 12 when the two light guides are close to each other, so that the size of the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 can be smoothly adjusted.

In a preferred embodiment, there is always a gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12 during the operation of the second light guide 12. When a gap is formed between the second end surface 112 of the first light guide member 11 and the third end surface 113 of the second light guide member 12 during the working process of the second light guide member 12, the second light guide member 12 does not collide with the first light guide member 11 during the moving process, so that the damage to the first light guide member 11 and the second light guide member 12 is avoided, and the service life of the non-locking optical switch is prolonged.

The above-described structure of the non-locking type optical switch can also be applied to an optical fiber type non-locking type optical switch, and a non-locking type optical switch according to another embodiment of the present application will be described in detail with reference to fig. 3. As shown in fig. 3, the non-locking type optical switch further includes an optical path input/output device, the optical path input/output device includes a first optical fiber 41, a second optical fiber 42, and a condensing lens 43, the first optical fiber 41 can be used for inputting or outputting a light beam, the second optical fiber 42 can be used for inputting or outputting a light beam, and the condensing lens 43 is used for condensing the light beam input from the first optical fiber 41. The first optical fiber 41 is disposed on a first end surface 111 of the first light guide 11, the second optical fiber 42 is disposed on a fourth end surface 114 of the second light guide 12, the converging lens 43 is disposed between the optical fiber head of the first optical fiber 41 and the first end surface 111 of the first light guide 11, and the light beam of the optical fiber head of the first optical fiber 41 is converged on the end surface of the optical fiber head of the second optical fiber 42 after passing through the converging lens 43, the first light guide 11 and the second light guide 12. The converging Lens 43 may be a G Lens (G-Lens) or a C Lens (C-Lens), and is preferably a G Lens. The G lens has advantages of small size, ultra-short focal length, and flat end surface, and when the G lens is used as the converging lens 43, the structure of the optical fiber type locking optical switch is more compact.

In one embodiment, the first optical fiber 41 may be a single fiber head, and the second optical fiber 42 may be a double fiber head, so that the non-locking optical switch is a straight type optical fiber type 1 × 2 non-locking optical switch.

Referring to fig. 3 to 15, the present application includes an optical path conversion assembly 1, a switch driving assembly 2, a sleeve assembly 3 and an optical path input/output device, where the optical path conversion assembly 1 includes a first light guide 11 and a second light guide 12, and the switch driving assembly 2 includes a first driving member 21, a second driving member 22 and a reset member 23; the sleeve assembly 3 comprises a light guide sleeve 31 and a driving member sleeve 32; the optical path input-output device includes a first optical fiber 41, a second optical fiber 42, and a condensing lens 43. The first optical fiber 41 is a single-core fiber tip having a first fiber tip 411; the second optical fiber 42 is a dual-core fiber tip having a second fiber tip 421 and a third fiber tip 422; the condenser lens 43 is a G lens.

In use, the first driving member 21 drives the second driving member 22 to move the second light guide member 12 from the initial position to the target position, and the reset member 23 gives a force to the second driving member 22 toward the initial position. The switching function given to the non-locking type optical switch is realized by the change of the gap between the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12. The optical path switching of the light beam by the non-locking type optical switch is as follows:

(1) referring to fig. 3, 4, 5 and 6, when the light beam is converged by the converging lens 43 from the first fiber head 411 of the first fiber 41 and input to the first light guide 11, the electromagnetic coil 211 of the first driving member 21 is not energized, the reset member 23 applies a driving force to the second driving member 22, and the second light guide 12 stays at the initial position under the action of the second driving member 22. So that the converged light beam is coupled into the second fiber head 421 of the dual core fiber head 42.

(2) Referring to fig. 3, 7, 8 and 9, when the light beam is converged by the converging lens 43 from the first fiber head 411 of the first fiber 41 and input to the first light guide 11, the electromagnetic coil 211 of the first driving member 21 is energized to generate a magnetic field opposite to the direction of the second driving member 22, the first driving member 21 generates a magnetic repulsion force to the second driving member 22 to move to the target position, the magnetic force of the first driving member 21 to the second driving member 22 is greater than the acting force of the reset member 23 to the second driving member 22, and therefore the second light guide 12 is driven by the second driving member 22 to move to the target position. As the gap distance between the third end surface 113 of the second light guide 12 and the second end surface 112 of the first light guide 11 increases, the offset distance of the light beam guided out from the fourth end surface 114 of the second light guide 12 with respect to the input light beam from the first end surface 111 of the first light guide 11 increases accordingly. The light beam output through the fourth end surface 114 of the second light guide 12 gradually moves from the second fiber head 421 to the third fiber head 422 of the second optical fiber 42, so as to realize the switching of the light beam.

(3) Referring to fig. 3, 10, 11 and 12, when the light beam is converged by the converging lens 43 from the first fiber head 411 of the first fiber 41 and input into the first light guide 11, the second driving member 22 moves to the target position under the driving action of the first driving member 21. The light beam input through the first light guide 11 is deflected by the second end surface 112 of the first light guide 11 and the third end surface 113 of the second light guide 12, and then is input/output to the third fiber head 422 from the fourth end surface 114 of the second light guide 12 in a shifted position with respect to the input light beam. As long as the electromagnetic coil 211 of the first driver member 21 remains energized, the force of the first driver member 21 on the second driver member 22 is greater than the force of the reset member 23 on the second driver member 22, so that the focused light beam continues to be coupled into the third fiber head 422 of the second optical fiber 42.

(4) Referring to fig. 3, 13, 14 and 15, when the light beam is converged from the first fiber tip 411 of the first optical fiber 41 through the converging lens 43 and input into the first light guide 11, the electromagnetic coil 211 of the first driving member 21 stops supplying power, and the second driving member 22 drives the second light guide 12 to move toward the first light guide 11 by the force applied by the resetting member 23 to the initial position until the second light guide 12 moves to the initial position, so that the converged light beam is coupled to the second fiber tip 421 of the second optical fiber 42.

The above switching, holding or resetting of the optical path is realized by the second driving member 22 driving the second light guide member 12 to move through the acting force of the first driving member 21 or the resetting member 23.

The non-locking optical switch adopting the structure has the advantage of saving the space of the non-locking optical switch because the light path conversion component 1 and the switch driving component 2 are not limited to be arranged in a mutually vertical space arrangement mode. Magnetic acting force is used between the first driving piece 21 and the second driving piece 22, and the non-locking optical switch is higher in switching speed, better in reliability and longer in service life when the magnetic acting force is applied. While in order to enhance the understanding of the present application, the present embodiment provides 1_×2, the number of optical fiber heads in the non-locking type optical switch is not limited thereto, and the structure of the non-locking type optical switch according to the present application can realize 1_×N to M_×N array type non-locking optical switches.

While the present application is described in terms of various aspects, including exemplary embodiments, the principles of the invention should not be limited to the disclosed embodiments, but are also intended to cover various modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (16)

1. An optical switch of the non-locking type, comprising: the light path conversion component and the switch driving component;

the light path conversion component comprises a first light guide piece and a second light guide piece, wherein the first light guide piece is provided with a first end surface and a second end surface which are opposite, the second light guide piece is provided with a third end surface and a fourth end surface which are opposite, the second end surface and the third end surface are opposite and adjacent, when a gap exists between the second end surface and the third end surface, light beams in the first light guide piece deflect at the second end surface and then enter the second light guide piece through the third end surface, or light beams in the second light guide piece deflect at the third end surface and then enter the first light guide piece through the second end surface;

the switch driving assembly comprises a first driving piece, a second driving piece and a reset piece, the second driving piece is arranged on the second light guide piece, the first driving piece is used for driving the second driving piece to move and drive the second light guide piece to move from an initial position to a target position, when the second light guide piece is at the initial position and the target position, a gap with different sizes is formed between the second end face of the first light guide piece and the third end face of the second light guide piece, and when the second light guide piece is located at the target position, the reset piece has an acting force which drives the second driving piece to move and drive the second light guide piece to move from the target position to the initial position.

2. The non-locking optical switch according to claim 1, wherein the second end surface of the first light guide and the third end surface of the second light guide are wedge surfaces, respectively, and when the second end surface of the first light guide and the third end surface of the second light guide are attached to each other, the light beam in the first light guide does not deflect and enters the second light guide when passing through the second end surface and the third end surface, or the light beam in the second light guide does not deflect and enters the first light guide when passing through the third end surface and the second end surface.

3. The non-locking type optical switch according to claim 1, wherein the first driving member and the reset member are respectively disposed on both sides of the second driving member in the optical path direction, or the first driving member and the reset member are respectively disposed on the same side of the second driving member in the optical path direction.

4. The non-latching optical switch of claim 3, wherein a magnetic force is applied between the first driving member and the second driving member, and a magnetic force and/or an elastic force is applied between the reset member and the second driving member.

5. An unlocked optical switch according to claim 4 and further comprising a sleeve assembly, said sleeve assembly comprising: the second end face of the first light guide piece and the third end face of the second light guide piece are accommodated in the light guide piece sleeve, the fourth end face of the second light guide piece is positioned outside the light guide piece sleeve, and the second light guide piece and the light guide piece sleeve are in clearance fit;

the driving piece sleeve pipe is connected with the light guide piece sleeve pipe, the second driving piece is located in the driving piece sleeve pipe, the first driving piece is arranged on the light guide piece sleeve pipe, and the reset piece is close to the driving piece sleeve pipe or arranged in the driving piece sleeve pipe.

6. The optical switch of claim 5, wherein the first driving member is an electromagnet disposed outside the light guide sleeve, the second driving member is a permanent magnet, and the reset member is an elastic member or a permanent magnet.

7. The optical switch according to claim 6, wherein the electromagnet of the first driving member comprises an electromagnetic coil and an iron core, the iron core is sleeved outside the light guide sleeve, and the electromagnetic coil is sleeved outside the iron core.

8. The non-locking optical switch of claim 7 wherein said actuator sleeve is a magnetically permeable sleeve.

9. The non-locking optical switch according to claim 5, wherein the first driving member is an electromagnet sleeved outside the light guide sleeve, the electromagnet of the first driving member includes an electromagnetic coil and an iron core, the iron core is sleeved outside the light guide sleeve, the electromagnetic coil is sleeved outside the iron core, the second driving member is a permanent magnet magnetically attracted to the iron core, and the iron core is reused as the reset member.

10. The non-latching optical switch according to claim 6, wherein the elastic member of the reset member is a compression spring or an extension spring or a resettable elastic balloon.

11. The non-locking optical switch of claim 5, wherein the light guide sleeve has a first positioning portion, the second light guide has a second positioning portion, and the first positioning portion and the second positioning portion cooperate to guide the second light guide to move along a predetermined direction when the second light guide moves.

12. The non-locking type optical switch according to claim 11, wherein the first positioning portion is a guide groove or a guide hole provided on the light guide sleeve, and the second positioning portion is a flat key provided on the second light guide.

13. The non-locking optical switch according to claim 5, wherein the light guide sleeve is provided with a gas guide hole between the second end surface and the third end surface.

14. The non-locking optical switch of claim 1, further comprising an optical path input/output device, wherein the optical path input/output device comprises a first optical fiber, a second optical fiber and a converging lens, the first optical fiber is disposed adjacent to the first end surface of the first light guide, the second optical fiber is disposed adjacent to the fourth end surface of the second light guide, the converging lens is disposed between the fiber stub of the first optical fiber and the first end surface of the first light guide, and the light beam of the fiber stub of the first optical fiber is converged onto the end surface of the fiber stub of the second optical fiber through the converging lens, the first light guide and the second light guide.

15. The non-locking optical switch of claim 14, wherein the first optical fiber is a single fiber head and the second optical fiber is a double fiber head.

16. The non-locking optical switch according to claim 1, wherein the second light guide member has a gap between the second end surface of the first light guide member and the third end surface of the second light guide member during operation.

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