Title:
METHOD FOR MANUFACTURING OPTICAL ELEMENT AND OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2020/255880
Kind Code:
A1
Abstract:
A method for manufacturing an optical element in which a laser beam is transmitted, reciprocated, or reflected. The method is provided with: a first step of obtaining a bonded element formed by subjecting first and second element parts, which are transparent to the laser beam, to surface-activated bonding with an amorphous layer interposed therebetween; and, after the first step, a second step of raising the temperature of the bonded element so as to crystallize at least part of the amorphous layer. In the second step, the temperature of the bonded element is raised to a prescribed temperature lower than the melting point of the first and second element parts.
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Inventors:
TAIRA TAKUNORI (JP)
KAUSAS ARVYDAS (JP)
ZHENG LIHE (JP)
KAUSAS ARVYDAS (JP)
ZHENG LIHE (JP)
Application Number:
PCT/JP2020/023233
Publication Date:
December 24, 2020
Filing Date:
June 12, 2020
Export Citation:
Assignee:
INTER UNIV RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES (JP)
International Classes:
H01S3/06; G02B1/02; G02F1/35; H01S3/042; H01S3/23
Foreign References:
| JP2017220652A | 2017-12-14 | |||
| JP2019073402A | 2019-05-16 | |||
| JP2003270602A | 2003-09-25 | |||
| JP2015210462A | 2015-11-24 | |||
| US7515333B1 | 2009-04-07 | |||
| JPS6245587B2 | 1987-09-28 |
Other References:
See also references of EP 3989374A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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