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Title:
METHOD FOR MANUFACTURING CENTRAL STRUCTURE FOR FRESNEL ZONE PLATE, AND ZONE PLATE
Document Type and Number:
WIPO Patent Application WO/2021/056809
Kind Code:
A1
Abstract:
Provided are a method for manufacturing a central structure for a Fresnel zone plate, and a zone plate. The method comprises: stripping a coating layer (13) on an outer surface of a raw material optical fiber to obtain a prepared optical fiber (S10); stretching the prepared optical fiber such that the diameter of the part, from which the coating layer (13) is stripped, of the prepared optical fiber reaches a target diameter range, and then obtaining a tapering structure (S20); and based on the diameter uniformity of the tapering structure, determining at least two cutting positions on the tapering structure, and cutting the cutting positions to obtain a central structure for preparing a Fresnel zone plate (S30). The raw material optical fiber is used for carrying out stretching preparation, the central structure is obtained by cutting on the basis of diameter uniformity on the tapering structure obtained by stretching, therefore the obtained central structure is good in surface roundness, uniform in diameter and controllable in size, and the problems of the inner surface of a die being easily abraded and the size of the central structure being difficult to control when using a die drawing and liquid filling manufacturing mode are prevented.

Inventors:
LU WEIER (CN)
XIA YANG (CN)
LI NAN (CN)
ZHAO LILI (CN)
LENG XINGLONG (CN)
HE MENG (CN)
WEN QINGTAO (CN)
Application Number:
PCT/CN2019/121701
Publication Date:
April 01, 2021
Filing Date:
November 28, 2019
Export Citation:
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Assignee:
INST OF MICROELECTRONICS OF THE CHINESE ACADEMY OF SCIENCES (CN)
International Classes:
G02B5/18
Foreign References:
CN109336418A2019-02-15
CN108469652A2018-08-31
CN108806820A2018-11-13
CN107833649A2018-03-23
US20120258243A12012-10-11
JP2000075468A2000-03-14
Attorney, Agent or Firm:
BEIJING BRIGHT & RIGHT LAW FIRM (CN)
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