Longfei Optical Fiber applies for a patent related to fiber optic screening devices, achieving fiber end fixing and position recognition through winding and gravity effects.

April 2 News, information from the National Intellectual Property Administration shows that Changfei Optical Fiber and Cable Co., Ltd. has applied for a patent titled “An Automatic Fixing Method and Device for Tail Fibers for Fiber Screening.” The application publication number is CN121757683A. The application number is CN202512051232.0. The application publication date is 2026-03-31. The application date is 2025-12-31. The inventors are Tan Bo, Tu Zhiwei, Li Shaoping, Huang Caiming, Lin Gan, Mei Jun, Zhang Youmin, and Ruan Yekang. The patent agency is Wuhan Kehao Intellectual Property Agency (Special General Partnership) and the patent agent is Qi Chenhan. The classification numbers are B65H65/00, G02B6/44, B65H75/44, B65H75/38, B65H59/10, B65C9/08.

The patent abstract shows that this invention discloses an automatic fixing method and device for tail fibers for fiber screening. First, place the take-up reel on a certain rotating shaft; then rotate the take-up reel 1~3 turns in its winding direction first, so that the optical fiber coil remaining outside the reel during spool change is wound onto the take-up reel; next, rotate the take-up reel 1/2 turn in the opposite direction of its winding, thereby releasing part of the optical fiber from the take-up reel. At this time, the released tail fiber is in a natural downward drooping state under the action of gravity, and the direction of the tail fiber is unique, making it convenient to fix the tail fiber; finally, use a labeling mechanism to achieve adhesive fixing of the tail fiber. By using the feature that, when the tail fiber is in a natural downward drooping state under gravity, it has a unique direction, the difficulty of tail fiber position recognition is solved.

Changfei Optical Fiber was established on May 31, 1988, and listed on the Shanghai Stock Exchange on July 20, 2018. The company is a global leading supplier of optical fiber preforms, optical fibers, and optical cables, with a complete industrial chain, strong technical strength, and high investment value. The registered address is in Hubei Province. The office addresses are in Hubei Province and Hong Kong.

Changfei Optical Fiber focuses on the communications industry, concentrating on fields related to telecom operators and data communications. The industry to which it belongs under Shenwan is Communications - Communication Equipment - Communication Cables and Supporting Equipment. It involves concept segments such as optical fiber cables, the CPO concept, and optical communications, forming an integrated, complete industrial chain and related diversified and internationalized business models.

In 2025, Changfei Optical Fiber’s operating revenue reached 14.252 billion yuan. Its industry ranking is 1/2, higher than the industry average and median of 7.567 billion yuan, far exceeding the second-placed company Fujida’s 0.881 billion yuan. In its principal business, optical transmission products account for 58.56%, optical interconnection components account for 22.06%, etc. Net profit was 8.82 billion yuan, again ranking first in the industry, higher than the industry average and median of 4.85 billion yuan, far exceeding the second-placed company Fujida’s 88.0014 million yuan.

The recent patent situation of Changfei Optical Fiber and Cable Co., Ltd. is as follows:

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