TWI727890B - Optical rotary coupling device - Google Patents

Abstract

An optical rotary coupling device includes a light input model receiving an optical signal coming from a light source so as to generate an incident light, at least two prisms, a combination of which forms an image rotation prism and has a characteristic of an image rotation prism, wherein the combination has a light input surface of combination and a light output surface of combination, the combination rotates along an axis going through the light input surface of combination and the light output surface of combination, the incident light is incident from an incidence point of the light input surface of combination and undergoes a light delivery path in the combination and an emergent light exits from a corresponding eye-point of the light output surface of combination, and a light output model receiving the emergent light.

Description

Optical fiber rotating coupling device

The invention relates to an optical fiber rotary coupling device comprising at least two beams, a light input module, a light output module, and at least one multi-axis fine-tuning mechanism, in particular to a fiber rotation coupling device comprising at least two beams, a light input module, and The light output module and at least one multi-axis fine-tuning mechanism, and a combination of each of the beams has the shape and characteristics of an imaging rotary beam (for example, a beam with a trapezoidal shape) and an optical fiber rotary coupling device.

Conventional optical fiber rotating coupling devices include, for example, Duffy. Duffel is currently often used in optical communication or image transmission, even if the optical element rotates, the transmitted signal will not be interrupted.

The traditional daffodil is generally formed in one piece, and usually a rectangular prism is made first, and then the edges are cut off to make a 45-degree bevel. What's interesting about Duff's scorpion is that when the scorpion rotates along the long axis, the image will rotate at twice the angle of the scorpion's rotation. This feature means that the beam can be rotated at any angle, making it a useful beam rotator, which can be used in the fields of interferometry, astronomy, and image recognition.

The first picture (a) is a schematic diagram of a Duffy 鏡. In the first picture In (a), the Duffy beam 1 is an imaging rotating beam, which includes a light-incident surface 11, a reflective surface 12, and a light-emitting surface 13, wherein the angle between the light-incident surface 11 and the reflective surface 12 is θ1 , And the angle between the light-emitting surface 13 and the reflective surface 12 is θ2. As shown in the first figure (a), the shape of the dove scallop 1 is like a right-angle scallop with the top corner cut off, which is often used to invert the image. When the light enters the light-incident surface 11, it will be totally reflected on the reflective surface 12, and then emitted from the light-emitting surface 13. Because only one total reflection occurs, the handedness of the image will be changed, thus making the image inverted. For example, in the first image (a), the incident "F" has been inverted when it exits.

The first picture (b) is a cross-sectional view of a Duffin. In the first figure (b), the Duffel 1 includes the light incident surface 11, the reflecting surface 12, and the light emitting surface 13, and the angle between the light incident surface 11 and the reflecting surface 12 is θ1 and the light emitting surface The angle between the surface 13 and the reflecting surface 12 is outside θ2, and further includes a first multi-axis fine-tuning mechanism 10.

However, it is very difficult to align and connect the signal source and the receiving end of the Duffel, mainly due to the tolerance of the inclined surface of the Duffel, which results in the relative position of the incident light and the light out of each beam. The traditional Duffel has only the ingress. The light path can be adjusted on the glossy surface, reflective surface and light-emitting surface, so the system has a low degree of freedom, and the alignment fine-tuning time is quite lengthy.

Indavri is integrally formed, and the only interfaces that can adjust the direction of light are: the light incident surface, the reflective surface and the light exit surface. The accuracy of the angle between the three interfaces is particularly important. The general commercial product is ±2arcmin, and the high-precision Davri The accuracy of the mirror is, for example, ±15 arcsec (approximately 0.004 degrees). The second figure (a) is the application of DAF 稜鏡 in the optical fiber rotary coupling device and in its Schematic diagram before adjustment. In the second figure (a), the angle between the light-incident surface and the reflecting surface of the Duffel 1 is θ±2arcmin, and the angle between the light-emitting surface and the reflecting surface of the Duffel 1 is θ'±2arcmin, which represents the The accuracy of the two included angles is ±2arcmin. As shown in the second figure (a), it has a central axis 14 passing through the center point of the Duffel (which is the intersection of half the height and half of the width), and the Duffel 1 can be clocked by the central axis. The direction is rotated by angle Φ (+Φ) or counterclockwise by angle Φ (-Φ), and an actual optical path of an optical signal of the Duffian 1 is 15, and an ideal optical path of the optical signal is 16. The second figure (b) is a schematic diagram of the DAFJJ applied to the optical fiber rotary coupling device and after its adjustment. In the second figure (b), except it is shown that the angle between the light incident surface and the reflecting surface of the Duffel 1 is θ±2arcmin, and the angle between the light emitting surface and the reflecting surface of the Duffel 1 is θ'±2arcmin and The daffodil 1 can be rotated clockwise or counterclockwise by the angle Φ according to the central axis, and it also shows that the adjusted light path of the optical signal of the daffodil 1 is 17.

For example, the high-precision Duffel has a high production cost and time, and the Duffel has less freedom of control, and it takes a lot of time to adjust the alignment. How to solve the problems of traditional optical fiber rotary coupling devices, such as the high production cost and time of Duffy, and the need to spend a lot of time on alignment adjustment, so as to provide a relatively low production cost and time and a relatively low adjustment The optical fiber rotating coupling device for adjusting the time is a question worth pondering.

For this reason, in view of the lack of conventional technology, the inventor thought and improved the idea of the invention, and finally invented the "optical fiber rotary coupling device" of this case.

The main purpose of the present invention is to provide an optical fiber rotary coupling device capable of multi-dimensional fine-tuning, which is composed of at least two ridges, a multi-axis fine-tuning mechanism, a light input module and a light output module. The multi-axis fine-tuning mechanism can adjust the position and angle of the optical fiber, so that the signal of the optical input module can be continuously and accurately transmitted to the optical output module when the optical fiber rotates, so as to achieve the purpose of optical fiber rotation coupling. According to the above composition, each scallop can be adjusted independently, which can compensate for the alignment deviation caused by the lack of precision of the scallop processing, and reduce the product cost. It can also construct an achromatic diffraction structure on the designated surface to achieve the purpose of achromatic aberration.

Another main purpose of this case is to provide an optical fiber rotation coupling device comprising at least two beams, the combination of which constitutes an imaging rotating beam and having one of the characteristics of an imaging rotating beam, wherein the combination has a combined light-incident surface and a Combined light-emitting surface, the combination rotates along an axis passing through the light-incident surface and the light-emitting surface, the incident light enters from an incident point of the combined light-incident surface, and passes through a light transmission path in the combination Then, an exit light is emitted from a corresponding exit point of one of the combined light-emitting surfaces, each of which includes a light-entering surface, a position and an inclination, at least one multi-axis fine-tuning mechanism, wherein each of the multi-axis fine-tuning The mechanism is used to adjust the positions and inclination angles of the corresponding ridges, so that when the ridges rotate, a light signal is continuously transmitted. At least one light input module includes a light source and a connection. In the first light guide of the light source, wherein the light signal emitted by the light source is transmitted through the first light guide to the corresponding light entrance surface, and at least one light output module includes a second light guide, Set to the corresponding light output The pair of sides of the input module are used to receive the light signal emitted from the corresponding each of the beams.

A main purpose of this case is to provide an optical fiber rotary coupling device, which includes at least two ridges, each including a ridge entrance light surface and a ridge light exit surface, and a light input module so that a light signal can be transmitted to the corresponding one. The light incident surface and a light output module are used to receive the light signal emitted from the corresponding light output surface, and at least one multi-axis fine-tuning mechanism adjusts the corresponding beams so that the beams surround each of the beams. When passing through the outermost light entrance surface and the outermost light exit surface, when one axis rotates, the light signal is continuously transmitted from the light output module, and an achromatic diffraction structure is constructed in a specific The light incident surface of the light beam or the light exit surface of the light beam is used to eliminate one of the chromatic aberrations of the light signal.

Another main purpose of this case is to provide an optical fiber rotary coupling device, which includes a light input module for receiving a light signal from a light source to generate an incident light, at least two beams, the combination of which has a combined light entrance surface And a combined light-emitting surface, wherein the combination rotates along an axis passing through the combined light-incident surface and the combined light-emitting surface, the incident light enters from an incident point of the combined light-incident surface, and is in the combination After passing through a light transmission path, an exit light is emitted from a corresponding exit point of one of the combined light exit surfaces, a light output module is used to receive the exit light, and an achromatic diffraction structure is constructed on the at least two One of the light beams is one of the light input surfaces or the light output surface of the light beams, and is used to eliminate one of the chromatic aberrations of the light signal.

Another main purpose of this case is to provide an optical fiber rotary coupling device, which includes a light input module for receiving one of the light sources The light signal generates an incident light, at least two beams, the combination of which constitutes an imaging rotating beam and has a characteristic of an imaging rotating beam, wherein the combination has a combined light-incident surface and a combined light-emitting surface, and the combination is Rotating through an axis of the combined light-incident surface and the combined light-emitting surface, the incident light enters from an incident point of the combined light-incident surface, and after passing through a light transmission path in the combination, and from the One of the combined light-emitting surfaces emits an emergent light corresponding to the emergent point, a light output module for receiving the emergent light, wherein the characteristic is such that the light signal incident from the incident point is emitted from the corresponding emergent point, and At least one multi-axis fine-tuning mechanism is connected to one of the at least two beams for adjusting a position parameter of the one beam relative to the optical signal, so that when the beam combination rotates along the axis, the beam combination Keep this feature.

Another main purpose of this case is to provide an optical fiber rotary coupling device, which includes a light input module for receiving a light signal from a light source to generate an incident light. At least two beams are combined to form an imaging rotating beam. It also has a characteristic of an imaging rotating beam, wherein the combination has a combined light-incident surface and a combined light-emitting surface, the combination rotates along an axis passing through the combined light-incident surface and the combined light-emitting surface, wherein the incident Light is incident from an incident point of the light entrance surface of the combination, and after passing through a light transmission path in the combination of light beams, an exit light is emitted from a corresponding exit point of the light exit surface of the combination, and a light output module , Used to receive the outgoing light.

1: Duff 鏡/The first imaging rotating 鏡

10, 35: The first multi-axis fine-tuning mechanism

11, 61: Glossy surface

12, 62: reflective surface

13,63: Glossy surface

14: Central axis

15,301,304: actual light path

16,302,305: ideal light path

17,303,306: Adjusted light path

2: According to the first preferred embodiment of the present invention, the optical fiber rotating coupling device is conceived

21, 31, 41, 51: the first jewel

22,32,42,52: the second jewel

33, 43, 53: The third scorpion

44,54: The fourth scorpion

3: According to the present invention, the optical fiber rotating coupling device according to the second preferred embodiment is conceived

30: Medium

311: The first glazed surface/combined glossy surface

312: Incident point

313: incident light/light signal

331: The third glossy surface/combined glossy surface

332: exit point/ideal exit point

333: Outgoing light/light signal

34: Achromatic diffraction structure

36: The second multi-axis fine-tuning mechanism

37: The third multi-axis fine-tuning mechanism

38: Optical input module/light source/first optical waveguide

381: Axis

382: Light Transmission Path

39: Optical output module/second optical waveguide

4: According to the present invention, the optical fiber rotating coupling device according to the third preferred embodiment

5: The optical fiber rotating coupling device according to the fourth preferred embodiment of the present invention

55: The Fifth Jade

6: Trapezoid body/trapezoid ridge/second imaging rotating ridge

△ ₂ , △ ₃ : Offset of light signal

n ₀ ,n ₁ ,n ₂ : refractive index

The first picture (a): It is a schematic diagram showing a Duffy 鏡.

The first picture (b): It shows a cross-sectional view of a Dafuxuan.

The second figure (a): It is a schematic diagram showing the application of DAF 稜鏡 in the optical fiber rotary coupling device and before its adjustment.

The second figure (b): It is a schematic diagram showing the application of DAF 稜鏡 in the optical fiber rotary coupling device and after its adjustment.

The third figure (a) to the third figure (e): respectively show a schematic diagram of the optical fiber rotation coupling device according to the first to fifth preferred embodiments of the present invention.

Fourth figure: It is a schematic diagram showing a sixth preferred embodiment of the optical fiber rotation coupling device according to the concept of the present invention.

Figure 5 (a): It is a schematic diagram of the optical fiber rotary coupling device according to the seventh preferred embodiment of the present invention and before its adjustment.

Figure 5 (b): It is a schematic diagram of the optical fiber rotary coupling device according to the seventh preferred embodiment of the present invention and after its adjustment.

Fig. 6 (a): It is a schematic diagram showing a trapezoid body related to the optical fiber rotary coupling device according to the first to seventh preferred embodiments conceived in the present invention.

Figure 6 (b): It is a schematic diagram showing the shape of the trapezoidal body as shown in Figure 6 (a) of the combination of two horns of the optical fiber rotary coupling device according to the first preferred embodiment of the present invention.

Figure 7 (a) to Figure 7 (d): They respectively show an optical fiber rotary coupling device according to the sixth preferred embodiment of the invention contemplated around its axis before adjustment When the line 381 is rotated by 0°, 90°, 180°, and 270°, the position where the light signal passes through the third light-emitting surface and the offset amount from the ideal light-emitting point of the light-emitting surface.

Figure 7 (e) to Figure 7 (h): They respectively show an optical fiber rotary coupling device according to the sixth preferred embodiment of the present invention, after being adjusted, rotated by 0°, 90°, and 180 around the axis 381 ° and 270°, the position where the light signal passes through the third light exit surface coincides with the ideal exit point of the light exit surface.

The optical fiber rotary coupling device capable of multi-dimensional fine-tuning provided by the present invention includes at least two ridges, at least one multi-axis fine-tuning mechanism, at least one light input module, and at least one light output module. The third figure (a) to the third figure (e) are schematic diagrams respectively showing the first to fifth preferred embodiments of the optical fiber rotary coupling device according to the concept of the present invention. The third figure (a) shows an optical fiber rotary coupling device according to the first preferred embodiment of the concept of the present invention. In the third figure (a), the optical fiber rotary coupling device 2 has a first beam 21 and a second beam 22. The third figure (b) shows an optical fiber rotating coupling device according to the second preferred embodiment of the concept of the present invention. In the third figure (b), the optical fiber rotary coupling device 3 has a first beam 31, a second beam 32, and a third beam 33. The third figure (c) shows an optical fiber rotary coupling device according to the third preferred embodiment of the concept of the present invention. In the third figure (c), the optical fiber rotary coupling device 3 has a first beam 31, a second beam 32, a third beam 33, and a light-emitting surface disposed on a light-emitting surface of the second beam 32 The achromatic diffraction structure 34, wherein the achromatic diffraction structure 34 is used to eliminate a chromatic aberration between two optical signals of different wavelengths incident from a light source, so that the two optical signals of different wavelengths can be transmitted from the The third beam 33 emits light from the same exit point on one of the light exit surfaces. The third figure (d) shows an optical fiber rotary coupling device according to the fourth preferred embodiment of the concept of the present invention. In the third figure (d), the optical fiber rotary coupling device 4 has a first frame 41, a second frame 42, a third frame 43, and a fourth frame 44. The third figure (e) shows an optical fiber rotary coupling device according to the fifth preferred embodiment of the concept of the present invention. In the third figure (e), the optical fiber rotary coupling device 5 has a first frame 51, a second frame 52, a third frame 53, a fourth frame 54 and a fifth frame 55.

The fourth figure is a schematic diagram showing an optical fiber rotation coupling device according to the sixth preferred embodiment of the present invention. In the fourth figure, the optical fiber rotary coupling device 3 includes the first ridge 31, the second ridge 32, the third ridge 33, and the second edge as shown in the third diagram (c). In addition to the achromatic diffraction structure 34 on the light-emitting surface of the mirror 32, it further includes a first multi-axis fine-tuning mechanism 35, a second multi-axis fine-tuning mechanism 36, a third multi-axis fine-tuning mechanism 37, and a light input module. Group 38 and a light output module 39. The first multi-axis fine-tuning mechanism 35, the second multi-axis fine-tuning mechanism 36, and the third multi-axis fine-tuning mechanism 37 are used to fine-tune the first, second, and third trimmings 31, 32, and 33, respectively , So that each corresponding scallop produces a rotation and/or a displacement. For example, a displacement in a spatial coordinate with an xyz axis or a clockwise rotation angle Φ angle (+Φ) or a counterclockwise rotation passing through a central axis at the center of each triangle section A rotation angle Φ angle (-Φ). The optical fiber rotary coupling device 3 rotates 360 degrees along an axis 381 that passes through the light input module 38 and the light output module 39 and extends to the right. The first ridge 31, the second ridge 32 and the third ridge 33 are respectively made _{of a first material having a first refractive index n 1} or a second material having a second refractive index 2 It is made of material, so the first ridge 31, the second ridge 32, and the third ridge 33 may have the same refractive index, or may have different refractive indexes. In addition, the angle θ1' between the light incident surface and the reflecting surface of each of the light beams (for example, the first light beam 31), the angle θ2' between the light output surface and the reflective surface, and the angle θ3' between the light incident surface and the light output surface all have a precision. ±18arcmin. In addition, the optical fiber rotary coupling device 3 is disposed in a medium 30, the medium 30 has a refractive index n ₀ , and the medium 30 is selected from oil or air. In addition, as shown in the fourth figure, each of the multi-axis fine-tuning mechanisms 35-37 includes a material with a negative thermal expansion coefficient, so that one of the multi-axis fine-tuning mechanisms 35-37 has a thermal expansion coefficient close to zero, so that each The multi-axis fine-tuning mechanism 35-37 can operate normally at an ambient temperature of -4°C to 40°C.

As shown in the fourth figure and the sixth figure (b), the optical fiber rotary coupling device 3/2 includes at least two beams (see 21 and 22 in the sixth figure (b) and 31, 32 and 33 in the fourth figure) ), the combination of which forms an imaging rotating circle (the combination has, for example, the shape of the Duff circle 1 in the first figure (a) or the circle circle 6 with the shape of a trapezoid in the sixth figure (a)) and has an imaging rotation One of the characteristics of 稜鏡. The combination (see the fourth figure) has a combined light incident surface 311 and a combined light exit surface 331, and the combination is along one of the incident point 312 and the exit point 332 passing through the light incident surface 311 and the light exit surface 331 The axis 381 rotates. Wherein, the incident light 313 is incident from an incident point 312 of the combined light incident surface 311, and is incident on the After a light transmission path 382 in the combination 3, an exit light 333 is emitted from one of the combination light exit surfaces 331 corresponding to the exit point 332. Each of the beams 31/32/33 includes a beam incident surface (for example, the first beam incident surface 311), a position and an inclination angle (for example, in the fifth figure (a), the first beam 31 It has a fixed position and a fixed inclination angle. The positions and inclination angles of the second ridge 32 and the third ridge 33 are adjustable). The optical fiber rotary coupling device 3 also includes at least one multi-axis fine-tuning mechanism (see 35/36/37 in the fourth figure). Among them, each of the multi-axis fine-tuning mechanisms 35/36/37 is used to adjust the positions and inclination angles of the corresponding ridges (31/32/33), so that the ridges (31/32/ 33) When rotating, a light signal 313/333 is continuously transmitted. In addition, the optical fiber rotary coupling device 3 further includes at least one light input module 38 (including a light source 38 and a first optical waveguide 38 connected to the light source), wherein the light signal 313 emitted by the light source 38 passes through the first The optical waveguide 38 is transmitted to the corresponding light-incident surface (for example, the first optical-incident surface 311) of each of the light beams, and at least one light output module 39, including a second optical waveguide 39, is disposed on each of the corresponding light-emitting surfaces. The pair of sides of the light input module 38 are used to receive the light signal 333 emitted from the corresponding light beam 33. Each of the multi-axis fine-tuning mechanisms 35/36/37 causes a rotation and/or a displacement of each of the corresponding ridges 31/32/33, and the positions and positions of the corresponding ridges 31/32/33 are adjusted. After each inclination angle, the optical signal 313 of each optical input module 38 is transmitted to each optical output module 39 under the condition of rotating corresponding to each of the beams 31/32/33, so as to achieve a fiber rotation coupling , Wherein each of the ridges 31/32/33 corresponding to each of the multi-axis fine-tuning mechanisms 35/36/37 are adjusted independently to compensate for a misalignment of the ridges caused by insufficient machining accuracy. The optical signal 333 includes a first A first light message having a wavelength and a second light message having a second wavelength. The achromatic diffraction structure 34 is constructed on the light-emitting surface of the second beam 32 to eliminate the first light beam. A color difference between a light message and the second light message. After the chromatic aberration is eliminated, each light output module 39 receives the first light information and the second light information emitted from the same exit point 332 of the light exit surface 331 of the corresponding light output 33 of the light output module. In the fourth figure, the combination of the three ridges 31/32/33 constitutes an imaging rotating ridge (such as the dove ridge 1 in the first diagram (a) or the edge with a trapezoidal shape in the sixth diagram (a) The mirror 6) also has a characteristic of an imaging rotating frame. Among them, the characteristic is such that the optical signal 313/333 incident from the incident point 312 is emitted from the corresponding exit point 332, and at least one multi-axis fine-tuning mechanism 35/36/37 is connected to the three-axis fine-tuning 31/32 /33 is used to adjust a position parameter of the ridge 31/32/33 relative to the optical signal 313/333, so that when the ridge combination 31/32/33 rotates along the axis 381, the edge The mirror combination 31/32/33 retains this characteristic, and an exit light 333 is emitted from a corresponding exit point 332 of one of the combination light exit surfaces 331, which will be received by the light output module 39.

The fifth figure (a) is a schematic diagram showing an optical fiber rotary coupling device according to the seventh preferred embodiment of the present invention and before its adjustment. In the fifth figure (a), the optical fiber rotary coupling device 3 has a first beam 31, a second beam 32, and a third beam 33. The first ridge 31 is fixed to the optical fiber rotary coupling device 3, and has a fixed position and a fixed inclination angle, which cannot be fine-tuned. The second ridge 32 and the third ridge 33 are both adjustable and have corresponding multi-axis fine-tuning mechanisms (not shown), and the second edge can be adjusted through their respective corresponding multi-axis fine-tuning mechanisms. The position and the inclination angle of the mirror 32 and the third beam 33. For example, along an axis that passes through the center of the reflecting surface of the second ridge 32 (or the third ridge 33) and the intersection of the light incident surface and the light output surface toward the reflecting surface or away from the reflecting surface A displacement of, or a rotation angle Φ angle (+Φ) in a clockwise direction or a rotation angle Φ angle (-Φ) in a counterclockwise direction along the axis. The angle θ between the light incident surface and the reflective surface of the first ridge 31 and the angle θ between the light exit surface and the reflective surface and the angle θ'between the light incident surface and the reflective surface of the third ridge 33 and the angle θ'between the light exit surface and the reflective surface are both Has a precision: ±18arcmin. Although the second angle 32 is not marked, the angle between the light incident surface and the reflecting surface and the angle between the light emitting surface and the reflecting surface also have the accuracy: ±18 arcmin. And the angle tolerance of each beam can be relaxed from, for example, ±2arcmin of Duffy beam to ±18arcmin, which can relax the manufacturing tolerance of the beam because each beam can be rotated and displaced individually to fine-tune the light path. Increase the freedom of system adjustment and greatly reduce production costs. In addition, as shown in FIG. 5(a), the optical fiber rotary coupling device 3 has a first optical signal and a second optical signal. The first optical signal has an actual optical path 301 and an ideal optical path 302, and the second optical signal has an actual optical path 304 and an ideal optical path 305.

The fifth figure (b) is a schematic diagram showing the optical fiber rotary coupling device according to the seventh preferred embodiment of the present invention and after its adjustment. Except that the first ridge 31 is fixed to the optical fiber rotary coupling device 3 and its position and inclination angle cannot be adjusted, the positions and inclination angles of the second ridge 32 and the third ridge 33 have been passed through to correspond to their respective positions and inclination angles. The multi-axis fine-tuning mechanism (not shown) is adjusted. For example, along an axis that passes through the center of the second reflection surface 32 and the intersection of the light-incident surface and the light-emitting surface is far away from the A displacement of the reflecting surface and a rotation angle Φ angle (-Φ) in a counterclockwise direction along the axis and along the center of the reflecting surface passing through the third beam 33 and the light incident surface and the light exit A displacement of the axis of the plane intersection point away from the reflecting surface and a rotation angle Φ angle (-Φ) along the axis in a counterclockwise direction. As shown in FIG. 5(b), the first optical signal has a calibrated optical path 303, and the second optical signal has a calibrated optical path 306.

The sixth figure (a) is a schematic diagram showing a trapezoidal body related to the optical fiber rotary coupling device according to the first to seventh preferred embodiments conceived in the present invention. In the sixth figure (a), when the trapezoidal body 6 is used as a trapezoid ridge, it is a second imaging rotating ridge, and has a light incident surface 61, a reflective surface 62 and a light exit surface 63. When each of the optical fiber rotary coupling devices according to the first to seventh preferred embodiments conceived in the present invention has at least two ridges (the first to seventh preferred embodiments of the present invention have two to five ridges, respectively) ), the combination has the shape of the trapezoidal body 6 as shown in the sixth figure (a).

The sixth figure (b) is a schematic diagram showing that the combination of two horns of the optical fiber rotary coupling device according to the first preferred embodiment of the present invention has the shape of the trapezoid as shown in the sixth figure (a). In the sixth figure (b), the combination of the first beam 21 and the second beam 22 of the optical fiber rotary coupling device 2 according to the first preferred embodiment of the present invention is as shown in the sixth figure (a) Shows the shape of the trapezoidal body 6.

The seventh figure (a) to the seventh figure (d) respectively show an optical fiber rotating coupling device according to the sixth preferred embodiment of the present invention, which is rotated around the axis 381 by 0°, 90°, 180° and At 270°, the position where the light signal passes through the third light-emitting surface and the offset amount from the ideal light-emitting surface of the light-emitting surface. The circular bright spot shown in the seventh (a) to seventh (d) is the position where the optical signal 333 of the optical fiber rotating coupling device 3 passes through the light-emitting surface 331 of the third ridge 33 (see fourth Figure), and the line segment displayed on the screen represents the deviation between the position where the optical signal 333 of the optical fiber rotary coupling device 3 passes through the light exit surface 331 of the third beam 33 and the ideal exit point 332 of the light exit surface 331 Shift △ ₂ .

The seventh figure (e) to the seventh figure (h) respectively show an optical fiber rotary coupling device according to the sixth preferred embodiment of the present invention, after being adjusted, rotated by 0°, 90°, 180° and around the axis 381 At 270°, the position where the light signal passes through the third light exit surface coincides with the ideal exit point of the light exit surface. In the seventh (e) to seventh (h), because the optical fiber rotating coupling device 3 has been adjusted, the optical signal of the optical fiber rotating coupling device 3 passes through the light-emitting surface 331 of the third beam 33 The position is the ideal exit point 332 of the light exit surface (see Figure 4), so the optical signal 333 of the optical fiber rotary coupling device 3 passes through the light exit surface 331 of the third beam 33 and the ideal light exit surface an exit point 332 is zero offset △ _3.

In summary, the present invention provides an optical fiber rotary coupling device capable of multi-dimensional fine-tuning. The device is composed of at least two ridges, a multi-axis fine-tuning mechanism, a light input module and a light output module. The multi-axis fine-tuning mechanism can adjust the position and angle of the optical fiber, so that the signal of the optical input module can be continuously and accurately transmitted to the optical output module when the optical fiber rotates, so as to achieve the purpose of optical fiber rotation coupling. According to the above composition, each scallop can be adjusted independently, which can compensate for the alignment deviation caused by the lack of precision of the scallop processing, reduce product cost, and can be used to create a decolorization on the surface of the specified scallop Differential diffraction structure achieves the purpose of achromatic aberration, so it is indeed novel and progressive.

Therefore, even though this case has been described in detail by the above-mentioned embodiments and can be modified in many ways by those familiar with the art, it does not deviate from the protection of the scope of the attached patent application.

3: According to the present invention, the optical fiber rotating coupling device according to the second preferred embodiment is conceived

30: Medium

31: The first jerk

311: The first glazed surface/combined glossy surface

312: Incident point

313: incident light/light signal

32: The second jerk

33: The third scorpion

331: The third glossy surface/combined glossy surface

332: exit point/ideal exit point

333: Outgoing light/light signal

34: Achromatic diffraction structure

35: The first multi-axis fine-tuning mechanism

36: The second multi-axis fine-tuning mechanism

37: The third multi-axis fine-tuning mechanism

38: Optical input module/light source/first optical waveguide

381: Axis

382: Light Transmission Path

39: Optical output module/second optical waveguide

Claims (13)

An optical fiber rotating coupling device, including: At least two beams, the combination of which forms an imaging rotating beam and possessing one of the characteristics of an imaging rotating beam, wherein the combination has a combined light-incident surface and a combined light-emitting surface, and the combination passes along the combined light-incident surface And an axis of the combined light-emitting surface rotates, the incident light is incident from an incident point of the combined light-incident surface, and after passing through a light transmission path in the combination, and then exits from one of the combined light-emitting surfaces correspondingly Point and shoot one outgoing light, each of the beams includes a beam incident surface, a position, and an inclination angle; At least one multi-axis fine-tuning mechanism, wherein each of the multi-axis fine-tuning mechanisms is used to adjust each of the positions and the inclination angles of the corresponding ridges, so that when each of the ridges rotates, an optical signal is continuously transmitted; At least one light input module includes a light source and a first light guide connected to the light source, wherein the light signal emitted by the light source is transmitted to the corresponding light entrance surfaces through the first light guide; and At least one light output module includes a second optical waveguide, which is arranged on a pair of sides of each corresponding light input module, and is used for receiving the light signal emitted from each corresponding light beam. For the optical fiber rotary coupling device described in item 1 of the scope of the patent application, each of the ridges includes an optical material that can penetrate common communication wavelengths, and each of the ridges has a first refractive index or a second refractive index, the Optical fiber rotating coupling device It is placed in a medium, the medium has a third refractive index, and the medium is air or oil. For the optical fiber rotary coupling device described in claim 1, wherein the optical signal includes a first optical information having a first wavelength and a second optical information having a second wavelength, and each of the beams includes a On the light-emitting surface of the light beam, an achromatic diffraction structure is constructed on the light-emitting surface of the light beam or the light-emitting surface of one of the at least two light beams to eliminate the first light information and the light-emitting surface. A color difference between the second light information. For the optical fiber rotary coupling device described in item 3 of the scope of patent application, after the chromatic aberration is eliminated, each of the light output modules receives and emits the first light from the same point on the light emitting surface of the corresponding light beam. The light message and the second light message. According to the optical fiber rotary coupling device described in the first item of the scope of patent application, the ridge without a corresponding multi-axis fine-tuning mechanism is fixed to the optical fiber rotary coupling device, and the ridge fixed to the optical fiber rotary coupling device has a A fixed position and a fixed angle of inclination. The optical fiber rotary coupling device described in item 1 of the scope of patent application, wherein each of the multi-axis fine-tuning mechanisms causes a corresponding rotation and/or a displacement of each of the corresponding ridges, and each position of the corresponding ridges is adjusted After each inclination angle, the optical signal of each optical input module is transmitted to each optical output module under the condition of corresponding to the rotation of each optical beam, so as to achieve an optical fiber rotational coupling. For the optical fiber rotary coupling device described in item 1 of the scope of patent application, each of the ridges corresponding to each of the multi-axis fine-tuning mechanisms is independently adjusted to compensate for the alignment of the ridges due to insufficient machining accuracy. Deviation, each of the multi-axis fine-tuning mechanisms includes a material with a negative thermal expansion coefficient, so that the thermal expansion coefficient of one of the multi-axis fine-tuning mechanisms is almost zero, so that each of the multi-axis fine-tuning mechanisms is at -4°C to 40°C It can operate normally at an ambient temperature of ℃. An optical fiber rotary coupling device, comprising: at least two beams, each including a beam incident surface and a beam exit surface, and each beam has a position and an inclination angle; and a light input module to enable a light signal To the corresponding light-incident surface; a light output module for receiving the light signal emitted from the corresponding light-emitting surface; at least one multi-axis fine-tuning mechanism to adjust the corresponding position and The inclination angle enables the light signal to be continuously transmitted from the light output module when each of the light beams rotates around an axis that passes through the outermost light entrance surface and the outermost light exit surface of the light beam; and An achromatic diffraction structure is constructed on the light entrance surface or the light exit surface of a specific light beam to eliminate a chromatic aberration of the light signal. An optical fiber rotary coupling device, comprising: a light input module for receiving a light signal from a light source to generate an incident light; at least two beams, the combination of which has a combined light entrance surface and a combined light exit surface, and Each of the beams has a position and an inclination angle, wherein the combination rotates along an axis passing through the combined light entrance surface and the combined light exit surface, the incident light enters from an incident point of the combined light entrance surface, and is After passing through a light transmission path in the combination, an exit light is emitted from a corresponding exit point of one of the light exit surfaces of the combination; a light output module is used to receive the exit light; at least one multi-axis fine-tuning mechanism is used Adjusting the position and the inclination angle of each corresponding one when rotating each one; and an achromatic diffraction structure, constructed on one of the at least two one of the two beams entering the smooth surface or one of the two beams On the light-emitting surface, it is used to eliminate one of the chromatic aberrations of the light signal. According to the optical fiber rotary coupling device described in item 9 of the scope of patent application, each of the ridges has a position and an inclination angle, and the optical signal includes a first optical message having a first wavelength and a second wavelength A second light message, the achromatic diffraction structure is used to eliminate a color difference between the first light message and the second light message, so that each of the light output modules is from the corresponding one of the The same point on the light-emitting surface of the 稜鏡 receives the emitted first light information and the second light information. An optical fiber rotating coupling device, comprising: a light input module for receiving a light signal from a light source to generate an incident light; at least two beams, which are combined to form an imaging rotating beam and possessing an imaging rotating beam A feature in which the combination has a combined light-incident surface and a combined light-emitting surface, the combination rotates along an axis passing through the combined light-incident surface and the combined light-emitting surface, and the incident light is from one of the combined light-incident surfaces An incident point enters, and after passing through a light transmission path in the combination, an exit light is emitted from a corresponding exit point of the combination light exit surface; a light output module is used to receive the exit light, wherein The characteristic is such that the light signal incident from the incident point is emitted from the corresponding exit point; and at least one multi-axis fine-tuning mechanism is connected to one of the at least two beams to adjust the one beam relative to the light It is a position parameter of the signal, and when the combination of scallops rotates along the axis, the combination of scallops retains the characteristic. In the optical fiber rotary coupling device described in item 11 of the scope of patent application, one of the imaging rotary horns is a trapezoidal body. An optical fiber rotating coupling device, including: A light input module for receiving a light signal from a light source to generate an incident light; at least two beams, the combination of which constitutes an imaging rotating beam and having one of the characteristics of an imaging rotating beam, and each edge The mirror has a position and an inclination angle, wherein the combination has a combined light-incident surface and a combined light-emitting surface, the combination rotates along an axis passing through the combined light-incident surface and the combined light-emitting surface, and the incident light comes from the combination An incident point of the light incident surface enters and passes through a light transmission path in the combination of light beams, and an exit light is emitted from a corresponding exit point of one of the light exit surfaces of the combination; a light output module is used to receive the Outgoing light; and at least one multi-axis fine-tuning mechanism for adjusting the position and the inclination angle of each corresponding one when each one rotates.

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