TWM637039U - Optical delayer - Google Patents

Abstract

The invention discloses an optical retarder, which includes an outer tube, an inner tube and a reflection component. The outer tube is connected to the inner tube, and the inner tube can move axially to approach or move away from the outer tube, thereby changing the distance between the optical fiber and the reflection assembly. The reflection assembly is connected with the inner tube and includes a mirror base, a reflection mirror, multiple fixing screws and multiple adjusting screws. When at least one of the adjustment screws is moved, the adjustment screws will drive the mirror base to tilt the reflector axially, thereby changing the path and intensity of light reflection.

Description

optical retarder

The present invention relates to an optical retarder, and furthermore, especially refers to an optical retarder that can adjust the inclination angle of the reflector axially by adjusting the screw when adjusting the optical path transmitted to the optical fiber, so as to reduce the volume of the overall module. delayer.

With the vigorous development of the Internet, the modern demand for information transmission is increasing. In order to face the advent of a highly information-based society, it is necessary to carry out communication infrastructure to transmit various information, such as voice, text, data, and video. The copper cable network used in the past cannot provide such a huge information demand today, and instead, an optical communication network that uses light to transmit information has emerged. In the optical communication network, optical fiber is usually used as the medium of optical transmission.

Optical fiber has two advantages of low loss and broadband, and is suitable for information transmission between long-distance locations. However, in the process of transmission, it is often necessary to adjust the transmission of optical signals according to different application purposes. How to Effectively arranging optical components and adjusting the transmission of optical signals are important issues to be considered in the field of optical transmission.

Optical delay line is a technical means commonly used in optical systems when time-domain delay is required between two or more optical pulses. in use When using an optical retarder, the mirror (Mirror) in the optical retarder can be moved back and forth to adjust the interference position of the light wavelength. In a conventional technology, slide rails are installed on both sides of the optical retarder, and Use the slide rail to drive the reflector to adjust the distance between the reflector and the optical fiber. Further, when the light wave is transmitted from the optical fiber to the reflector, move the slide rail toward a position away from the optical fiber. At this time, the distance between the optical fiber and the reflector The optical path distance will change, so as to achieve the purpose of adjusting the optical path difference. In addition, when using an optical retarder, the inclination angle of the reflector can be changed to adjust the light intensity of the light returning to the optical fiber. In another conventional technology, an angle adjustment frame is installed around the reflector, and the adjustment frame can be adjusted through the actuation. The adjustment element on the reflector is used to change the inclination angle of the reflector. Furthermore, when the light wave reaches the reflector, due to the change of the reflection angle, the light wave transmitted from the reflector will be reflected to different Path, through the cooperation of the lens in the optical retarder, at this time, part of the light wave will deviate from the original input path, and will not return to the optical fiber again, so as to achieve the purpose of attenuating the light intensity. In addition, in another known technology, a rotating frame is installed on the side of the reflector, and the reflector is rotated along its axis through the rotating frame, thereby delaying the return time of the light wave and changing the return time of the light wave. path of.

With the increase of the global population and the development of science and technology, the equipment and tools in the field of optical transmission are aimed at reducing the overall size and pursuing convenience. However, in the above-mentioned conventional technologies, additional adjustments are required outside the optical retarder Components, and the size of the adjustment components often occupy the space when the optical fiber is arranged. In the face of the increasingly narrow use of space, it does not meet the miniaturization requirements of modern optical systems.

In view of the above, it can be seen that there are many bottlenecks in the conventional technology. This invention overcomes the above shortcomings and proposes a practical optical retarder.

One purpose of this creation is to provide an optical retarder, by directly designing the structure to adjust the optical path difference and light path on the optical retarder, instead of installing slide rails and adjustment brackets outside the optical retarder in the conventional technology, When installing the optical retarder, there is no need to spend extra space outside the retarder to arrange adjustment elements, so that the overall occupied space is greatly reduced.

Based on the above purpose, the present invention provides an optical retarder, which is suitable for adjusting the optical path transmitted to an optical fiber, comprising an outer tube, an inner tube and a reflection component. The outer circular tube is connected with the optical fiber. The inner tube is connected to the outer tube and includes a plurality of fixing screw holes. The reflection assembly is connected with the inner tube and includes a mirror base, a reflection mirror, multiple fixing screws and multiple adjusting screws. The mirror base has a plurality of mirror base screw holes, the reflector is set on the mirror base, the fixing screws are set corresponding to the fixing screw holes, and are movably installed in the fixing screw holes and some of the mirrors. In the seat screw holes, the adjustment screws are movably passed through some of the mirror seat screw holes and abut against the inner tube, and when at least one of the adjustment screws is moved, the adjustment screws are Driving the mirror base makes the reflector tilt axially.

In one embodiment of the present creation, the outer tube includes an outer tube head and an outer tube body, the outer tube head is connected to the outer tube body, and the optical fiber Connect the head of the outer tube.

In one embodiment of the present creation, the inner tube includes an inner tube head and an inner tube body, the inner tube head is connected to the inner tube body, and the reflector is arranged on The inner tube head.

In one embodiment of the present creation, wherein the outer pipe further includes an outer pipe thread section, the inner pipe further includes an inner pipe thread section, and the inner pipe thread section is connected to the outer pipe thread section Corresponding matching arrangement enables the inner pipe to move axially on the threaded section of the outer pipe.

In one embodiment of the present invention, the threaded section of the outer pipe is located on the inner surface of the outer pipe, and the threaded section of the inner pipe is located on the outer surface of the inner pipe.

In one embodiment of the present invention, an optical path adjustment component is further included, and the optical path adjustment component includes a bearing, a screw socket, a screw and a rotating wheel. The bearing is connected with the outer tube. The screw socket is connected with the inner tube. The screw rod is passed through the bearing and the thread socket. The runner is connected to the screw. Wherein, when the rotating wheel is moved, the screw rod is actuated to make the screw thread holder move on the screw rod, and make the inner tube move axially along with the screw thread holder.

In one embodiment of the present invention, the screw socket includes a screw socket thread, the screw rod includes a screw internal thread, and the screw socket thread is matched with the screw internal thread.

In one embodiment of the invention, it further includes an accommodating space, the accommodating The space is arranged inside the runner and the screw, and is located between the runner and the screw.

In one embodiment of the present invention, a screw adjusting part is arranged in the accommodating space, and the screw adjusting part has a head of the screw adjusting part and a body of the screw adjusting part, and the head of the screw adjusting part is located at the rotating The inside of the wheel, the screw adjusting part is located inside the screw.

In one embodiment of the invention, the screw adjusting body includes a screw adjusting thread, and the inside of the screw includes a screw internal thread, and the screw adjusting thread and the screw internal thread are correspondingly arranged.

In one embodiment of the invention, a linear bearing is further included, and the linear bearing is arranged on the outer tube and covers at least part of the inner tube.

In one embodiment of the present invention, when the inner tube moves axially along with the screw socket, the inner tube moves on the linear bearing.

In one embodiment of the invention, the linear bearing is arranged on the body of the outer tube.

In one embodiment of the present invention, it further includes a parallel light lens, a spring and a focus lens, the parallel light lens, the spring and the focus lens are sequentially arranged along the direction from the optical fiber to the reflection component.

In one embodiment of the invention, the parallel light lens is arranged on the head of the outer tube.

In one embodiment of the invention, the focusing lens is arranged on the body of the inner tube.

In one embodiment of the present invention, the spring system is located at the body of the outer tube and the body of the inner tube, and between the collimator lens and the focusing lens.

In one embodiment of the invention, the inner diameter of the outer tube body is not smaller than the outer diameter of the inner tube body.

In one embodiment of the present invention, the inner diameter of the linear bearing is not smaller than the outer diameter of the inner tube body.

In one embodiment of the present invention, the fixing screws and the adjusting screws are alternately arranged.

To sum up the above, in the optical retarder proposed in this creation, the optical fiber is connected to the outer tube, and the reflector is set on the inner tube, and through the action between the inner tube and the outer tube, the optical fiber and the outer tube The distance between the reflectors can be changed freely, so as to achieve the purpose of adjusting the optical path difference. The method of actuating the inner tube is to set threaded sections on the inner and outer tubes separately, and through the cooperation between the threaded sections , so that the inner tube moves on the threaded section in a rotating manner to move away from or towards the outer tube. In addition, the method of actuating the inner tube can be adjusted by installing an optical path adjustment component on the inner tube and the outer tube. When the rotating wheel of the optical path adjustment component is actuated, the inner tube moves axially away from or toward the outer tube along with the threaded socket. The design of the above thread can pass through when adjusting the optical path difference. This is achieved by rotating specific components, reducing the effort required for adjustment. Other In addition, with the design that the adjusting screw is arranged on the reflector seat, when it is desired to adjust the reflection path of the light wave, the tilt angle of the reflector can be easily changed by turning the adjustment screw, which can further affect the light wave path returning to the optical fiber. In addition, the above-mentioned threaded sections, optical length adjustment components, and adjustment screws are all arranged within the structural range of the optical retarder itself, without occupying the space outside the structure. In addition to facilitating the positioning and installation of the optical retarder in the optical system, it can also To achieve the purpose of reducing the overall use of space.

1, 3: Optical retarder

11: Outer tube

112: The head of the outer tube

114: Outer tube body

1141: Outer pipe threaded section

1142: inner surface

12: Inner tube

122: Inner tube head

124: inner tube body

1222: Fixed screw hole

1241: Internal pipe thread section

1242: outer surface

13: Reflection components

131: mirror holder

1312: Mirror base screw hole

132: Mirror

133: set screw

134: Adjustment screw

14: parallel light lens

15: Focusing lens

16: spring

2: Optical fiber

30:Accommodating space

301: screw adjustment part

3011: Head of screw adjustment part

3012: Screw adjuster body

3011a: Screw adjustment thread

31: Optical path adjustment component

311: Bearing

312: screw socket

313: screw

312a: screw socket thread

313a: screw external thread

313b: screw internal thread

314: Runner

40: Linear bearing

L: axis direction

FIG. 1 is a schematic structural diagram of an embodiment of the optical retarder of the present invention.

Fig. 2 is a side view schematic diagram of an embodiment of the optical retarder of the present invention.

FIG. 3A is a schematic cross-sectional structure diagram of an embodiment of the optical retarder of the present invention.

FIG. 3B is a schematic cross-sectional structure diagram of an embodiment of the created optical retarder.

FIG. 4A is a schematic cross-sectional structure diagram of an embodiment of the created optical retarder.

FIG. 4B is a schematic cross-sectional structure diagram of an embodiment of the created optical retarder.

Fig. 5 is a side view schematic diagram of another embodiment of the optical retarder of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of another embodiment of the created optical retarder.

The advantages and spirit of this creation can be further understood by the following detailed description and the accompanying drawings. The structure and use of this creation embodiment are as follows in detail. It must be understood that this creation provides many innovative concepts that can be applied in specific A wide range of implementations can be made under the background art. This specific embodiment is only indicated in a specific way to make and use the work, but does not limit the scope of the work.

The optical retarder of this creation is used to adjust the optical path transmitted to the optical fiber. Specifically, one end of the optical retarder is connected to the optical fiber. When the optical signal is transmitted from the optical fiber to the optical delayer, it will pass through the optical delayer. The reflector is used to transmit the optical signal to the optical fiber again. Next, firstly, the structure of an embodiment of the optical retarder of the present invention will be described, and please also refer to FIG. 1 , FIG. 2 , FIG. 3A and FIG. 3B . FIG. 1 is a schematic structural diagram of an embodiment of the optical retarder of the present invention. Fig. 2 is a side view schematic diagram of an embodiment of the optical retarder of the present invention. FIG. 3A is a schematic cross-sectional structure diagram of an embodiment of the optical retarder of the present invention. FIG. 3B is a schematic cross-sectional structure diagram of an embodiment of the created optical retarder. The optical retarder 1 includes an outer tube 11, an inner tube 12 and a reflection assembly 13, one end of the outer tube 11 is connected to the optical fiber 2, the inner tube 12 is connected to the outer tube 11, and the reflection assembly 13 is connected to the inner tube 12 . Outer pipe 11 includes outer pipe thread section 1141, inner pipe 12 includes inner pipe thread section 1241 and a plurality of fixing screw holes 1222, and outer pipe thread section 1141 is set corresponding to inner pipe thread section 1241 . The reflection assembly 13 is composed of a mirror base 131, a reflector 132, a plurality of fixing screws 133 and a plurality of adjustment screws 134, and a plurality of mirror base screw holes 1312 are arranged on the reflector 132, and each fixing screw 133 is corresponding to the inner circular tube The fixing screw hole 1222 on the 12 is set, and can be movably penetrated in the fixing screw hole 1222 and part of the mirror base screw hole 1312, and each adjustment screw 134 is penetrated in the mirror base screw hole 1312, and against the inner circle Tube 12.

In detail, the outer tube 11 is divided into an outer tube head 112 and an outer tube body 114, the outer tube head 112 is connected to the outer tube body 114, and the optical fiber 2 is connected to the outer tube head 112, and the threaded section 1141 of the outer tube is located at the body 114 of the outer tube. The inner tube 12 is divided into an inner tube head 122 and an inner tube body 124, the inner tube head 122 is connected to the inner tube body 124, and the reflector 13 and the fixing screw hole 1222 are located in the inner tube The head 122 and the threaded section 1241 of the inner pipe are located at the body 124 of the inner pipe. However, in the present embodiment, the outer pipe thread section 1141 is located on the inner surface 1142 of the outer pipe body 114, and the inner pipe thread section 1241 is located on the outer surface 1242 of the inner pipe body 124. In one example, the inner diameter of the outer tube body 114 is not smaller than the outer diameter of the inner tube body 124 . However, this embodiment is only an example, and this creation does not limit the threaded section of the outer pipe and the threaded section of the inner pipe on the surface where the outer pipe and the inner pipe are located, as long as the outer pipe and the inner pipe can be connected Interacting with each other to achieve the effect of changing the distance between the reflection component and the optical fiber.

In addition, the present embodiment further includes a parallel light lens 14 , a focusing lens 15 and a spring 16 . The parallel light lens 14 is arranged on the head portion 112 of the outer tube. The focusing lens 15 is disposed on the inner tube body 124 . The spring 16 is located within the range of the outer tube body 114 and the inner tube body 124 , and between the parallel light lens 14 and the focusing lens 15 .

On the whole, the outer tube 11 , parallel light lens 14 , spring 16 , focusing lens 15 , inner tube 12 and reflector 13 are arranged along an axial direction L and away from the optical fiber 2 in sequence.

Please continue to refer to FIG. 1 , FIG. 3A and FIG. 3B to better understand the distribution positions of the fixing screws 133 and the adjusting screws 134 in the reflection component 13 . In this embodiment, the inner tube head 122 of the inner tube 12 has a fixing screw hole 1222, and the mirror base 131 has a mirror base screw hole 1312, and the fixing screw 133 is threaded through the fixing screw as shown in FIG. 3A. In the hole 1222 and part of the screw hole 1312 of the mirror base, the adjusting screw 134 is penetrated in the part of the screw hole 1312 of the mirror base as shown in FIG. In this embodiment, the number of fixing screws 133 and adjusting screws 134 is the same. However, this embodiment is only an example, and the invention does not limit the number of fixing screws and adjusting screws, as long as the number is sufficient to adjust the reflector to have various angles can be tilted.

Next, the process and structure of adjusting the optical path of the optical retarder will be described continuously. Please continue to refer to FIG. 1 , FIG. 3A and FIG. 3B , and also refer to FIG. 4A and FIG. 4B . FIG. 4A is a schematic cross-sectional structure diagram of an embodiment of the created optical retarder. FIG. 4B is a schematic cross-sectional structure diagram of an embodiment of the created optical retarder. First, when the reflector 132 is not adjusted, as shown in Figure 3A and Figure 3B, the fixing screw 133 is locked in the fixing screw hole 1222 of the inner tube head 122 and part of the mirror seat screw hole 1312, and The adjustment screw 134 passes through a part of the screw hole 1312 of the mirror base and abuts against the head 122 of the inner tube. When the inclination angle of the reflector 132 needs to be adjusted, as shown in FIG. 4A , the fixing screws 133 distributed around the position to be adjusted are first slightly loosened, so that the fixing screws 133 are slightly away from the inner tube body 124, and then , as shown in Figure 4B, and then tighten the adjusting screw 134, at this time, the mirror base 131 will move along the thread of the adjusting screw 134 away from the inner circle In this way, the reflector 132 on the mirror base 131 will also be driven to incline to a specific angle, and the intensity returned to the optical fiber 2 is adjusted synchronously with the inclination of the reflector 132 . In this embodiment, when one of the adjustment screws is to be adjusted, the fixing screws on both sides of the adjustment screw are first loosened, and then the adjustment screws are tightened. Tighten and loosen the number of fixing screws and adjusting screws, as long as the number can achieve the purpose of adjusting the angle of the reflector.

In addition to changing the inclination angle of the mirror, this embodiment further illustrates how to adjust the optical path difference by changing the distance between the optical fiber and the mirror. Please refer to Fig. 4A and Fig. 4B. Fig. 4A shows the state where the threaded section 1241 of the inner pipe is completely located in the outer pipe 11. At this time, the spring 16 is pushed into a compressed state. Fig. 4B shows the state of the inner pipe 12 rotates and moves so that part of the inner pipe thread section 1241 does not overlap with the outer pipe thread section 1141 , at this time, the pushing force on the spring 16 is smaller than that in FIG. 4A . Through the cooperation of the outer pipe thread section 1141 and the inner pipe thread section 1241, and by means of the spring 16, there is no backlash between the threads of the outer pipe thread section 1141 and the inner pipe thread section 1241, so as to increase the rotation stability and precision, so that the inner tube 12 can freely move axially between the threaded sections 1141 of the outer tube to change the distance between the mirror 132 and the optical fiber 2 .

In addition to the method of arranging threaded sections on the outer and inner tubes described in the above embodiments, this invention also provides another way to adjust the optical path difference. Please also match the reference See Figure 5 and Figure 6. Fig. 5 is a side view schematic diagram of another embodiment of the optical retarder of the present invention. Fig. 6 is a schematic cross-sectional structure diagram of another embodiment of the created optical retarder. The difference from the embodiments shown in Figures 1 to 4B is that this embodiment adjusts the optical path difference by setting an optical path adjustment element. The difference between this embodiment and the previous embodiments will be described in more detail below. The reason is not repeated here. The optical retarder 3 of this embodiment includes an outer tube 11 , an inner tube 12 , a reflection component 13 and an optical path adjustment component 31 . The optical path adjustment component 31 includes a bearing 311 , a screw socket 312 , a screw 313 and a wheel 314 . The bearing 311 is connected to the outer tube 11 . The screw socket 312 is connected to the inner tube 12 . The screw rod 313 passes through between the bearing 311 and the screw thread holder 312 , and the rotating wheel 314 is connected to the screw rod 313 .

In addition, the screw socket 312 includes a screw socket thread 312a, the screw 313 includes a screw external thread 313a, and the screw socket thread 312a and the screw external thread 313a are arranged correspondingly. In addition, this embodiment further includes an accommodating space 30 , the accommodating space 30 is located at the center of the rotating wheel 314 and inside the screw 313 , and is located between the rotating wheel 314 and the screw 313 . Wherein, the accommodating space 30 is provided with a screw adjusting part 301, the screw adjusting part 301 has a screw adjusting part head 3011 and a screw adjusting part body 3012, the screw adjusting part head 3011 is located inside the runner 314, and the screw adjusting part The body 3012 is located inside the screw 313 . The screw adjusting body 3012 includes a screw adjusting thread 3012a, and the inside of the screw 313 includes a screw internal thread 313b, and the screw adjusting thread 3012a and the screw internal thread 313b are arranged correspondingly. In addition, this embodiment further includes a linear bearing 40, the linear bearing 40 is arranged on the outer tube 11, and covers at least part of the Parts of the inner tube 12.

In detail, when the rotating wheel 314 is moved, for example, if the rotating wheel 314 is rotated, the rotating wheel 314 will actuate the screw adjusting member 301 located therein. The screw rod 313 moves relative to the runner 314 due to the cooperative arrangement between them. At the same time, due to the cooperative arrangement between the screw thread holder thread 312a and the screw external thread 313a, the screw holder 312 can move on the screw rod 313, and The inner tube 12 is moved axially along with the screw thread bearing 312 . And when the inner tube 12 moves axially with the drive of the screw socket 312 , the inner tube 12 is tied on the bearing 311 to move relative to the outer tube 11 .

It should be noted that, in this embodiment, the screw is used as the screw adjusting part as an example only, and the invention is not limited to the actual form of the screw adjusting part, as long as it can achieve mutual movement between the runner and the screw That's it.

With the arrangement of the above-mentioned optical path adjustment components and the assistance of the linear bearing, the inner tube can be moved stably to approach or move away from the outer tube, and the inner tube will not rotate while moving. In this way, the adjustment A reflector with a good angle will not change the angle direction due to the rotation of the optical path adjustment. In addition, the optical path adjustment component and the linear bearing system are directly arranged in the device range of the optical retarder body, and will not affect the optical retarder. Component configuration.

Accordingly, this creation provides two ways to adjust the optical path difference. The first one is through the cooperation of the threaded section of the outer tube and the inner tube, so that the inner tube can be on the threaded section. The system moves so that the distance between the optical fiber and the mirror can be changed freely, and the second is to achieve the purpose of adjusting the optical path difference through the assistance of the optical path adjustment component. However, whether it is the first or the second The way to adjust the optical path difference needs to be combined with the tightening of the adjusting screw and the fixing screw, and the rotation of the adjusting screw can be used to change the inclination angle of the mirror in multiple angles, so as to completely change the light wave path and light wave intensity returning to the optical fiber.

As can be seen from the above, the optical retarder of this invention has the following advantages:

1. By setting the fixing screws and adjusting screws, and by loosening and tightening the screws, the adjustment effect of the mirror can be achieved. Compared with the conventional complex action structure, this creation is not only simple in operation, And the manufacturing cost is further reduced.

2. The optical path difference between the reflector and the optical fiber can be changed by two axial adjustment methods. Whether it is directly setting the threaded section on the inner and outer tubes, or setting the optical path adjustment component, the two design styles are both It is directly arranged on the overall structure of the optical retarder, which greatly reduces the external space sacrificed by the external adjustment device in order to adjust the light path in the prior art.

3. This creation does not need to spend additional time installing slide rails and other adjustment components. In addition to reducing the possible tolerance problems during installation, it also saves the time spent on installing optical retarders.

The technical content disclosed in this creation is not limited to the above-mentioned embodiments, and all creation concepts and principles that are the same as those disclosed in this creation fall within the scope of patent applications for this creation. It should be noted that the direction of the elements described in this creation, such as "up", "Bottom", "above", "below", "horizontal", "vertical", "left", "right", etc. do not imply absolute positions and/or directions. Definitions of elements such as "first" and "second" are not words of limitation, but terms of distinction. However, the term "include" or "include" used in this case covers the concepts of "include" and "have", and means elements, operation steps and/or groups or combinations of the above, and does not mean exclusion or addition. Also, unless otherwise specified, the sequence of steps in the operation does not represent an absolute sequence. Furthermore, reference to an element in the singular (eg, using the articles "a" or "an") does not mean "one and only one" but "one or more" unless expressly stated otherwise. "And/or" as used in this case means "and" or "or", as well as "and" and "or". The range-related terms used in this case include all and/or range limitations, such as "at least", "greater than", "less than", "not exceeding", etc., referring to the upper limit or lower limit of the range.

But the above-mentioned ones are only embodiments of the present invention, and should not limit the scope of implementation of the present invention with this. All simple equivalent changes and modifications made according to the patent scope of the present application and the content of the patent specification are still within the scope of the present invention. Within the scope covered by this patent.

1: Optical retarder

112: The head of the outer tube

114: Outer tube body

1141: Outer pipe threaded section

1142: inner surface

122: Inner tube head

124: inner tube body

1222: Fixed screw hole

1241: Internal pipe thread section

1242: outer surface

131: mirror holder

1312: Mirror base screw hole

132: Mirror

133: set screw

14: parallel light lens

15: Focusing lens

16: Spring

2: Optical fiber

L: axis direction

Claims (19)

An optical retarder, which is suitable for adjusting the optical path transmitted to an optical fiber, comprising: an outer circular tube connected to the optical fiber; an inner circular tube connected to the outer circular tube and including a plurality of fixing screw holes; and a reflection component , which is connected to the inner tube, and includes: a mirror base with a plurality of screw holes in the mirror base; a reflector set in the mirror base; a plurality of fixing screws, which are set corresponding to the fixing screw holes, and are movably mounted on the These fixing screw holes and some of these mirror base screw holes; and a plurality of adjusting screws are movably passed through some of these mirror base screw holes and abut against the inner tube, and when these adjusting screws are moved When at least one of them is used, the adjusting screws drive the mirror base to tilt the reflector axially. The optical retarder as claimed in item 1, wherein the outer tube further includes an outer tube head and an outer tube body, and the inner tube further includes an inner tube head and an inner tube body part, the head of the outer tube is connected to the body of the outer tube, and the optical fiber is connected to the head of the outer tube, the head of the inner tube is connected to the body of the inner tube, and the reflection component is arranged on The inner tube head. The optical retarder as described in claim 2, wherein the outer tube further includes an outer tube thread section, and the inner tube further includes an inner tube thread section, and the inner tube thread section and the outer tube thread The segments are matched with each other so that the inner tube moves axially in the threaded segment of the outer tube. The optical retarder as claimed in claim 3, wherein the threaded section of the outer tube is located on the inner surface of the outer tube, and the threaded section of the inner tube is located on the outer surface of the inner tube. The optical retarder as described in claim 3, wherein the threaded section of the outer tube is located on the outer tube body of the outer tube, and the threaded section of the inner tube is located on the inner tube body of the inner tube department. The optical retarder as described in Claim 1 further includes an optical path adjustment component, and the optical path adjustment component includes: a bearing connected to the outer tube; a screw socket connected to the inner tube; a screw rod, passing through the bearing and the screw socket; and a runner connected to the screw; wherein, when the runner is moved, the screw is actuated to move the screw socket on the screw and the The inner tube moves axially as driven by the threaded socket. The optical retarder as described in claim 6, wherein the screw socket includes a screw socket thread, the screw rod includes a screw external thread, and the screw socket thread is matched with the screw external thread. . The optical retarder as claimed in claim 6 further includes an accommodating space, the accommodating space is arranged at the center of the rotating wheel and inside the screw, and is located between the rotating wheel and the screw. The optical retarder as described in Claim 8, wherein a screw adjusting part is arranged in the accommodating space, and the screw adjusting part has a screw adjusting part head and a screw adjusting part body, and the screw adjusting part head is located at Inside the running wheel, the screw adjusting part is located inside the screw. The optical retarder as described in Claim 9, wherein the screw adjusting body includes a screw adjusting thread, the inside of the screw includes a screw internal thread, and the screw adjusting thread and the screw internal thread are correspondingly arranged. The optical retarder as claimed in claim 6 further comprises a linear bearing, the linear bearing is arranged on the outer tube and covers at least part of the inner tube. The optical retarder as claimed in claim 11, wherein when the inner tube moves axially with the screw socket, the inner tube moves on the linear bearing. The optical retarder as described in Claim 1, further comprising a parallel light lens, a spring and a focus lens, the parallel light lens, the spring and the focus lens are sequentially arranged along the direction from the optical fiber to the reflection component . The optical retarder as claimed in claim 13, wherein the collimating lens is disposed on the outer tube. The optical retarder as claimed in claim 13, wherein the focusing lens is disposed on the inner tube. The optical retarder as claimed in claim 13, wherein the spring system is located between the outer tube and the inner tube, and between the collimator lens and the focusing lens. The optical retarder as claimed in claim 2, wherein the inner diameter of the outer tube is not smaller than the outer diameter of the inner tube. The optical retarder as claimed in claim 11, wherein the inner diameter of the linear bearing is not smaller than the outer diameter of the inner tube. The optical retarder as claimed in claim 1, wherein the fixing screws and the adjusting screws are alternately arranged.

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