CN201051162Y - Multi-channel free space optical inter-connector - Google Patents

Abstract

An interconnection member for light in multi-path and free space comprises a dove prism and fiber-optical collimating devices. Further, the utility model is also provided with an external sleeve barrel, a front pressure cover and a rear pressure cover, which are connected on both ends of the external sleeve barrel and whose centers are provided with though-holes. A rotation sleeve barrel is embedded in the through-hole of the front pressure cover, a fiber-optical flange plate is connected in the rotation sleeve barrel, and the fiber-optical collimating device for incoming optical signals is arranged in the fiber-optical flange plate. A fiber-optical flange plate is fixed in the through hole of the rear pressure cover, and a fiber-optical collimating device for receiving optical signals is fixed in the fiber-optical flange plate. The dove prism is arranged in the external sleeve barrel and is arranged between the two fiber-optical collimating devices, a prism adjusting mechanism is arranged between the external sleeve barrel and the dove prism, and a planetary mechanism is arranged between the rotation sleeve barrel and the prism adjusting mechanism. Owing to the employment of the dove prism, the fiber-optical collimating devices which is composed of C-lens prisms, and with the assistance of the planetary mechanism, the utility model is capable of transmitting multi-path optical signals to a delivery channel from incoming signals, and can be widely applied to the fields of military, space flight and industry.

Description

Multi-channel free-space optical interconnect device

technical field

The utility model relates to an information transmission device, in particular to a multi-channel free-space optical interconnection device capable of realizing multi-channel bidirectional transmission of optical signals.

Background technique

The multi-channel free-space optical interconnection device is a platform coupling connection mechanism that continuously transmits multiple signals from a stationary platform at one end to a rotating platform at the other end. At present, this type of device is being widely used in different fields, such as industrial manipulators, winches, oil exploration equipment, scanning systems for ocean exploration, submarine robots, aircraft in the aerospace field, and CT scanning systems for medical equipment, etc. Case. In particular, the demand for rotary connection technology for various military monitoring targets is becoming more and more common. This type of device can be widely used in the control systems of various weapon platforms on the sea, land and air, such as radar guidance and sonar arrays.

At present, there are several types of foreign patents similar to multi-channel spatial interconnection devices, one is as reported in the patent document "USPATENT 5588077 Dec. 24, 1996 Shane H. Woodside, et al.", the problems caused by its structure Part of the optical signal of one channel will be coupled into another channel; the second type, as reported in the patent document "US PATENT4519670 May.28 1985 Georg Spineer, et al.", has a structural problem corresponding to the short focal length of the lens The port of the channel will partially shield the channel with a long focal length; the third type is reported in the patent document "US PATENT 4725116Feb.16 1988 William W.Spencer, et al.", its structural problem is that the processing and assembly of each part is complicated, The production cost is high.

Domestic multi-channel free-space optical interconnect device patents fall into the following categories. One category of patents, as reported in "The People's Republic of China PATENT 00207539.3 Tianjin University", uses a symmetrical optical structure to achieve signal transmission. Its problem is that the coupling precision of the optical structure and the precision of the mechanical structure processing and assembly are strict; the second category of patents such as "The People's Republic of China PATENT 2582014Y, the 23rd Research Institute of China Electronics Technology Group Corporation" lock report, it is Dove prisms are used to realize multi-channel signal transmission. Its problem is that the deceleration mechanism is huge, the structure is complex, and there is a backlash phenomenon; the Dove prism has no adjustment device inside the device, so it is difficult to ensure the signal correspondence between the input and output channels.

Contents of the invention

The technical problem to be solved by the utility model is to provide a multi-channel optical signal transmission system that can transmit multiple optical signals from the input signal to the output channel under the assistance of the planetary gear system by using the image rotation characteristics of the Dove prism and the collimation characteristics of the C-lens lens. Multi-channel free-space optical interconnect device.

The technical solution adopted by the utility model is: a multi-channel free-space optical interconnection device, including an optical fiber collimator for sending incident optical signals and an optical fiber collimator for receiving optical signals, and an optical fiber collimator for transmitting optical signals The Dove prism is also provided with an outer sleeve and a front gland and a rear gland connected to the center of the two ends to form a through hole; a rotating sleeve is embedded in the through hole of the front gland, and the front gland and the Rolling bearings are installed between the rotating sleeves, and an optical fiber flange is fixedly connected to the rotating sleeve, and the optical fiber collimator for the incident light signal is fixedly arranged on the optical fiber flange; An optical fiber flange is fixedly connected inside, and the optical fiber collimator for receiving optical signals is fixedly arranged on the optical fiber flange; Between the outer sleeve and the Dove prism, there is also a prism adjustment mechanism, and a rolling bearing is installed between the outer sleeve and the prism adjustment mechanism; The tube drives the optical fiber flange connected to it, and the planetary gear mechanism that drives the Dove prism to rotate through the prism adjustment mechanism.

The outer sleeve and the front gland are fixed by a conical pin, and a sleeve for determining the fixing position of the two is arranged between the two.

The prism adjustment mechanism includes: a gland on the upper side of the Dove prism, and a prism sleeve positioned on the lower side of the Dove prism; an adjustment sleeve that is placed outside the Dove prism, the gland, and the prism sleeve; The headless positioning screw and leaf spring embedded in the adjustment sleeve are used to adjust the radial position of the upper part of the Dove prism. The leaf spring is pressed on the gland by the headless positioning screw, and the adjustment A through hole for adjusting the headless positioning screw is formed at a position corresponding to the headless positioning screw in the sleeve; the rolling bearing is arranged between the outer sleeve and the adjusting sleeve.

The bottom of the adjusting sleeve is provided with more than two adjusting screw holes, and the adjusting screw holes are connected with adjusting screws for adjusting the radial position of the lower part of the Dove prism.

A gasket is also arranged between the underside of the Dove prism and the prism sleeve.

The planetary gear mechanism includes: a gear combined with the rotating sleeve installed with the optical fiber flange through interference fit; a gear fixed on the outer sleeve; located between the gear and the gear and connected to the gear and the gear respectively Meshing gears; wherein the gears are mounted on shafts via spring retaining rings, and the shafts are fixedly mounted on the ends of the adjustment sleeves in the prism adjustment mechanism.

A bearing spacer is also arranged between the gear and the rolling bearing arranged on the outer sleeve.

The rotation speed of the rotating sleeve driven by the gear, the fiber flange and the fiber collimator installed in the fiber flange is twice the rotation speed of the adjustment sleeve driven by the gear through the shaft.

The multi-channel free-space optical interconnection device of the utility model adopts a Dove prism, an optical fiber collimator composed of a C-lens lens, and is assisted by a planetary gear mechanism, and can transmit multiple channels from an input signal to an output channel. Optical signals can be widely used in military, aerospace and industrial fields.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the planetary gear mechanism.

in:

1: Front gland 2: Rotating sleeve

3: Fiber flange 4a, 4b: Fiber collimator

5: Connecting screw 6: Pressing piece

7: Screw 8: Rolling bearing

9: gear 10: gear

11: Gear 12: Tapered pin

13: Connecting screw 14: Positioning screw

15: leaf spring 16: gland

17: Rear gland 18: Fiber optic flange

19: Outer sleeve 20: Dove prism

21: Prism sleeve 22: Adjustment sleeve

23: Adjusting screw 24: Bearing spacer

25: Gasket 26: Spring retaining ring

27: Shaft 28: Sleeve

29: Strong screw 30: Through hole

Detailed ways

Specific embodiments are given below in conjunction with the accompanying drawings to further illustrate the multi-channel free-space optical interconnection device of the present invention.

As shown in Figure 1, the multi-channel free-space optical interconnection device of the present invention includes a fiber collimator 4a composed of a C-lens lens for sending incident optical signals and a fiber collimator 4a composed of a C-lens lens for receiving optical signals. The optical fiber collimator 4b composed of lenses, and the Dove prism 20 for transmitting optical signals are also provided with an outer sleeve 19 and a front gland 1 and a rear gland 17 connected to its two ends and formed with a through hole in the center, The outer sleeve 19 and the front gland 1 are fixed by a conical pin 12, and a sleeve 28 for determining the fixed position of the two is arranged between the two; a rotating sleeve is embedded in the through hole of the front gland 1 2, and a rolling bearing 8 is installed between the front gland 1 and the rotating sleeve 2, and the optical fiber flange 3 is fixedly connected in the rotating sleeve 2, and the optical fiber collimator 4a for the incident optical signal is fixedly arranged In the fiber flange 3, it is ensured that the incident optical signal is a parallel beam. In order to prevent the fiber collimator 4a from falling off, a connecting screw 5 and a pressing piece 6 are added to one end of the fiber flange 3 . The connection between the optical fiber flange 3 and the rotating sleeve 2 is completed by screws 7; an optical fiber flange 18 is fixedly connected in the through hole of the rear gland 17, and the optical fiber collimation for receiving optical signals The device 4b is fixedly arranged in the fiber flange 18 to improve the efficiency of signal reception. Similarly, in order to prevent the fiber collimator 4b from falling off, a connecting screw 5 and a pressing piece 6 are added to one end of the fiber flange 18 . The connection between the optical fiber flange 18 and the gland 17 is also completed by screws 7; the above-mentioned optical fiber flange 18, gland 17, outer sleeve 19, and gland 1 together form the static part of the interconnection device.

The Dove prism 20 is arranged in the outer sleeve 19 and between the two optical fiber collimators 4a, 4b, a prism adjustment mechanism is also arranged between the outer sleeve 19 and the Dove prism 20, and the outer sleeve 19 Between the rotating sleeve 2 and the prism adjusting mechanism, a rolling bearing 8 is installed; between the rotating sleeve 2 and the prism adjusting mechanism, an optical fiber flange 3 connected thereto is driven by the rotating sleeve 2, and the driveway is driven by the prism adjusting mechanism. The planetary gear mechanism that Wei prism 20 rotates.

The prism adjustment mechanism includes: a gland 16 positioned on the upper side of the Dove prism 20, and a prism sleeve 21 positioned on the lower side of the Dove prism 20; The external adjustment sleeve 22; the headless positioning screw 14 and the leaf spring 15 embedded in the adjustment sleeve 22 for adjusting the radial position of the upper part of the Dove prism 20, and the leaf spring 15 passes through the headless positioning screw 14 is compressed on the gland 16, and a through hole 30 for adjusting the headless set screw 14 is formed on the outer sleeve 19 at a position corresponding to the headless set screw 14 in the adjustment sleeve 22; The bottom of 22 is provided with more than two adjusting screw holes, and the present embodiment is provided with four adjusting screw holes, and the adjusting screw holes are connected with adjusting screws 23 for adjusting the radial position of the lower part of the dove prism 20 .

A gasket 25 for protecting the dove prism 20 is also provided between the lower side of the dove prism 20 and the prism sleeve 21 . The rolling bearing 8 is arranged between the outer sleeve 19 and the adjustment sleeve 22 .

As shown in Figure 2, the planetary gear mechanism includes: a gear 9 combined with the rotating sleeve 2 with the optical fiber flange 3 through interference fit; a gear 11 fixed on the outer sleeve 19; 9 and the gear 11 and the gear 10 meshing with the gear 9 and the gear 11 respectively; wherein, the gear 10 is installed on the shaft 27 through the spring retaining ring 26, and the shaft 27 is fixedly installed on the adjustment sleeve in the prism adjustment mechanism 22 ends.

A bearing spacer 24 is further arranged between the above-mentioned gear 11 and the rolling bearing 8 arranged on the outer sleeve 19 .

In the above-mentioned planetary gear mechanism, the rotation speed of the rotating sleeve 2 driven by the gear 9, the fiber flange 3 and the fiber collimator 4 installed in the fiber flange 3 is driven by the gear 10 through the shaft 27 Adjust the rotation speed of the sleeve 22 twice.

According to the image rotation characteristics of the Dove prism 20, the incident parallel beams from the fiber optic flange 3 are incident on the surface of the Dove prism 20, as long as the rotation speed of the Dove prism 20 is guaranteed to be half of the rotation speed of the fiber optic flange 3, After the light beam is refracted and reflected by the Dove prism 20, the position of the outgoing light beam does not change. The outgoing light beam is received by the fiber optic flange 18. Since the optical flange 18 is static, the signal can be transmitted from the dynamic part to the static part. This process can be reversible, that is, the signal is transferred from the static part to the dynamic part. transmission.

In this embodiment, for ease of description, the number of channels of the multi-channel free-space optical interconnection device is four channels, that is, in the fiber flange 3 and the fiber flange 18, the input channels and output channels are 4 channels respectively. . According to actual needs, the number of channels in the optical fiber flange 3 and the optical fiber flange 18 can be symmetrically set to 1, 2, 3, 5, 6, 7, 9, 10, 11, 12 and more. The principle is the same.

Claims (8)

1. A multi-channel free-space optical interconnection device, comprising a fiber collimator (4a) for sending an incident light signal and a fiber collimator (4b) for receiving an optical signal, and a Dovey for transmitting the light signal The prism (20) is characterized in that it is also provided with an outer sleeve (19) and is connected to a front gland (1) and a rear gland (17) with through holes formed in the center of the two ends of the outer sleeve (19); A rotating sleeve (2) is embedded in the through hole of the gland (1), and a rolling bearing (8) is installed between the front gland (1) and the rotating sleeve (2), and the rotating sleeve (2) is fixed A fiber optic flange (3) is connected, and the fiber collimator (4a) for the incident optical signal is fixedly arranged in the fiber optic flange (3); fixed in the through hole of the rear gland (17) A fiber flange (18) is connected, and the fiber collimator (4b) for receiving optical signals is fixedly arranged in the fiber flange (18); the Dove prism (20) is arranged outside In the sleeve (19) and between the two optical fiber collimators (4a, 4b), a prism adjustment mechanism is also arranged between the outer sleeve (19) and the Dove prism (20), and the outer sleeve (19) A rolling bearing (8) is installed between the rotating sleeve (2) and the prism adjusting mechanism; an optical fiber flange (3) for driving the rotating sleeve (2) connected thereto is also provided between the rotating sleeve (2) and the prism adjusting mechanism , and a planetary gear mechanism that drives the Dove prism (20) to rotate through the prism adjustment mechanism. 2. The multi-channel free-space optical interconnection device according to claim 1, characterized in that, the outer sleeve (19) and the front gland (1) are fixed by conical pins (12), and the two A sleeve (28) for determining the fixed position of the two is arranged between them. 3. The multi-channel free-space optical interconnection device according to claim 1, characterized in that, the prism adjustment mechanism includes: a gland (16) located on the upper side of the Dove prism (20), and a The prism sleeve (21) on the lower side of the Dove prism (20); the adjustment sleeve (22) that is enclosed within the Dove prism (20), the gland (16), and the outside of the prism sleeve (21); is used to adjust the Dove prism The headless positioning screw (14) and the leaf spring (15) embedded in the adjustment sleeve (22) at the radial position on the upper part of the prism (20), the leaf spring (15) passes through the headless positioning screw (14) ) is pressed on the gland (16), and a hole is formed on the outer sleeve (19) at the position corresponding to the headless set screw (14) in the adjustment sleeve (22) for adjusting the headless set screw (14). A through hole (30) for adjustment; the rolling bearing (8) is arranged between the outer sleeve (19) and the adjustment sleeve (22). 4. The multi-channel free-space optical interconnection device according to claim 3, characterized in that, the bottom of the adjustment sleeve (22) is provided with more than two adjustment screw holes, and the adjustment screw holes are connected with Adjustment screw (23) for adjusting the radial position of the lower part of the dove prism (20). 5. The multi-channel free-space optical interconnection device according to claim 3, characterized in that a spacer (25) is also arranged between the underside of the dove prism (20) and the prism sleeve (21) . 6. The multi-channel free-space optical interconnection device according to claim 1, characterized in that, the planetary gear mechanism includes: passing through the rotating sleeve (2) with the optical fiber flange (3) The gear (9) combined with interference fit; the gear (11) fixed on the outer sleeve (19); located between the gear (9) and the gear (11) and meshing with the gear (9) and the gear (11) respectively The gear (10); wherein, the gear (10) is installed on the shaft (27) through the circlip (26), and the shaft (27) is fixedly installed on the end of the adjustment sleeve (22) in the prism adjustment mechanism . 7. The multi-channel free-space optical interconnection device according to claim 6, characterized in that, a bearing spacer is also provided between the gear (11) and the rolling bearing (8) arranged on the outer sleeve (19). Circle (24). 8. The multi-channel free-space optical interconnection device according to claim 6, characterized in that, the rotating sleeve (2) driven by the gear (9), the optical fiber flange (3) and the The speed of rotation of the fiber collimator (4) in the flange (3) is 2 times of the speed of rotation of the adjustment sleeve (22) driven by the gear (10) through the shaft (27).

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