Method for manufacturing large-section high-resolution flexible optical fiber image transmission bundle

Abstract

The invention discloses a manufacturing method of a large-section high-resolution flexible optical fiber image transmission bundle. An optical fiber monofilament with two claddings is drawn by a three-crucible or rod-tube method; the optical fiber monofilament is drawn into a hard optical fiber image transmission unit body with a regular polygon-shaped cross section through primary filament arrangement and primary multifilament drawing. Secondary filament arrangement is carried out on the unit body to obtain a large-section hard optical fiber image transmission bundle, end part hot melting iscarried out on the hard optical fiber image transmission bundle, a middle part of the hard optical fiber image transmission bundle into an acid solution, and acid dissolution is carried out to removean acid dissolution layer to obtain a flexible optical fiber image transmission bundle. By using the manufacturing method provided by the invention, the large-section high-resolution flexible opticalfiber image transmission bundle with a circular section or a regular polygon section can be manufactured, the size of the regular hexagon section is 8.8 mm, the size of the square section is more than5mm, the length can reach 6m, and the highest resolution can reach 191lp / mm.

Description

technical field [0001] The invention relates to the field of optical fiber technology, in particular to a method for manufacturing a large-section high-resolution flexible optical fiber image transmission bundle. Background technique [0002] The flexible optical fiber image transmission bundle is an optical element that can transmit images by arranging a plurality of multi-component glass optical fibers of a certain length into a bundle, with one-to-one correspondence at both ends. Its working principle is: the light propagates in the high refraction core material glass, and forms total reflection at the low refraction skin glass interface, and each single filament of the optical fiber bundle constitutes a pixel, and the size of the pixel is equal to the size of the fiber cross section , the number of pixels is equal to the total number of optical fibers in the image bundle, and the text or image on the working end face is transmitted to the receiving end face through the o...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this patent is that the monofilaments in the optical fiber array unit are fused together, resulting in poor flexibility of the image bundle. If broken, dozens of monofilaments in the entire array will break, resulting in a large loss of information; Secondary multifilaments increase the probability of fiber damage

[0007] To sum up, the existing large-section image beam adopts the lamination process, and there are technical problems that high resolution cannot be achieved; the acid-dissolving method has problems with poor softness of the image beam, single-filament transmittance after multiple wire drawing, and low Contrast drop problem

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