Off-Axis Fiber Optic Rotary Connectors

Abstract

The invention discloses an off-axis fiber rotation connector. The connector is mainly formed by a fixed sleeve, an input end plate, a rolling bearing, a receiving end plate, a light shielding cylinder, an annular base body and an annular optical grating. To-be-transmitted signal light beams enter the rotation connector through an input channel on the input end plate and then are transmitted in a reflected manner. When the signals are reflected for a certain times, the signals are emitted out from an emission window on the annular base body, and through a lens system on the receiving end plate,the signal light beams are coupled to an optical fiber collimator and then the signals are output through fibers. Compared with the prior art, by combining a wavelength division multiplexing principle, simultaneous off-axis and circumferential transmission of signal light beams of different wavelengths can be achieved; a problem that the central shaft is occupied to fail to transmit signals is effectively solved; and meanwhile, the connector is simple in structure, easy to process, high in stability and coupling efficiency and widely applicable.

Description

technical field [0001] The off-axis optical fiber rotary connector disclosed by the present invention is currently mainly used in the technical fields of spatial optical interconnection and optical fiber communication. Background technique [0002] The rotary connector is a communication device that continuously transmits the information to be transmitted from the stationary or rotating end to the rotating or stationary other end with optical signals as the carrier. Due to the advantages of large channel capacity, anti-electromagnetic interference, and high transmission rate, optical fiber rotary connectors are widely used in optical fiber rotary connectors, such as medical equipment CT scanning systems, industrial robots, video surveillance systems, and radar rotary antennas and bases. The data communication between them, the information connection between the turret and the console in the new tank and armored vehicle, the photoelectric theodolite, the signal connection bet...

AI Technical Summary

Problems solved by technology

In the process of signal transmission, the rotary connector can realize the off-axis transmission of multi-channel signals, but because the infrared right-angle prism has a large ability to absorb optical signals, the insertion loss is finally large, and the structure of the connector is complex and the cost is high.

[0008] Although the off-axis optical fiber rotary connectors proposed in the above literature can realize signal transmission, they are not conducive to widespread promotion due to their complex structure, large insertion loss, and poor stability.

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