OPTICAL FIBER ALIGNMENT METHOD, OPTICAL FIBER CONNECTOR MANUFACTURING METHOD, OPTICAL FIBER ALIGNMENT DEVICE, AND OPTICAL FIBER FUSION SPLICING MACHINE

Title:

OPTICAL FIBER ALIGNMENT METHOD, OPTICAL FIBER CONNECTOR MANUFACTURING METHOD, OPTICAL FIBER ALIGNMENT DEVICE, AND OPTICAL FIBER FUSION SPLICING MACHINE

Document Type and Number:

WIPO Patent Application WO/2023/157564

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide an optical fiber alignment method, an optical fiber connector manufacturing method, an optical fiber alignment device, and an optical fiber fusion splicing machine with which it is possible to suitably perform alignment in the circumferential direction.　This alignment device (200) comprises: imaging units (105A), (105B) that perform one round's worth of capturing side images in the circumferential direction of a pair of optical fibers (10A), (10B) at a plurality of focus positions; a feature value calculation unit (112) that, for each focus position, performs one round's worth of calculating feature values obtained by digitizing features of the side images for the respective optical fibers (10A), (10B); an asymmetry calculation unit (113) that, for each focus position, calculates the asymmetry of a cross-correlation between the one round's worth of feature values of the respective optical fibers (10A), (10B); a focus position selection unit (114) that selects specific focus positions among focus positions having a prescribed asymmetry or higher; and a rotation alignment unit that performs alignment in the circumferential direction of the pair of optical fibers (10A) (10B) on the basis of the one round's worth of side images of the respective optical fibers (10A), (10B) at the selected focus positions.

More Like This:

JP3313060	OPTICAL CONNECTION COMPONENT AND ITS MANUFACTURE
JP3948360	METHOD AND DEVICE FOR MAGNIFICATION MODE FIELD DIAMETER FOR MULTIPLE OPTICAL FIBER
JP4015105	Optical fiber rotating device and fusion splicer

Inventors:

OHZEKI MASAKI (JP)
SASAKI YUSUKE (JP)
TAKENAGA KATSUHIRO (JP)

Application Number:

PCT/JP2023/001812

Publication Date:

August 24, 2023

Filing Date:

January 22, 2023

Export Citation:

Click for automatic bibliography generation Help

Assignee:

FUJIKURA LTD (JP)

International Classes:

G02B6/255; G01M11/00

Foreign References:

JP2020144301A	2020-09-10
JP2003195093A	2003-07-09
JP2004341452A	2004-12-02
US20150226920A1	2015-08-13

Attorney, Agent or Firm:

MORIMURA Yasuo (JP)

Download PDF:

View/Download PDF PDF Help

Previous Patent: TRANSPARENT CONDUCTIVE FILM

Next Patent: AIR-CONDITIONING SYSTEM