(19)
(11) EP 4 196 830 A1

(12)

(43) Date of publication:
21.06.2023 Bulletin 2023/25

(21) Application number: 20781449.2

(22) Date of filing: 22.09.2020
(51) International Patent Classification (IPC): 
G02B 5/00(2006.01)
 G02B 5/02(2006.01)
(52) Cooperative Patent Classification (CPC):
G02B 1/14; G02B 3/08; G02B 30/40; G02B 5/0252; G02B 5/1814
(86) International application number:
PCT/EP2020/076371
(87) International publication number:
WO 2022/063385 (31.03.2022 Gazette 2022/13)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(71) Applicant: Huawei Technologies Co., Ltd.
Shenzhen, Guangdong 518129 (CN)

(72) Inventors:
  • GANDHI, Vishal
    16440 Kista (SE)
  • MAATTANEN, Sami
    16440 Kista (SE)
  • KHACHATRYAN, Hayk
    16440 Kista (SE)

(74) Representative: Maiwald GmbH 
Engineering Elisenhof Elisenstrasse 3
80335 München
80335 München (DE)

   


(54) OPTICAL STRUCTURE FOR ACHIEVING BALL SHAPE EFFECT AND METHOD OF MANUFACTURING THEREOF