(19)
(11) EP 4 420 867 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
06.11.2024 Bulletin 2024/45

(43) Date of publication:
28.08.2024 Bulletin 2024/35

(21) Application number: 24165854.1

(22) Date of filing: 17.10.2018
(51) International Patent Classification (IPC): 
B29D 11/00(2006.01)
B29C 35/08(2006.01)
B29C 39/02(2006.01)
B29C 39/38(2006.01)
B29C 35/02(2006.01)
 B29C 31/04(2006.01)
B29C 37/00(2006.01)
B29C 39/26(2006.01)
B29C 71/02(2006.01)
(52) Cooperative Patent Classification (CPC):
B29C 71/02; B29C 35/0888; B29C 2035/0822; B29C 2035/0827; B29C 2071/022; B29C 39/026; B29C 39/265; B29C 39/38; B29D 11/00663; B29C 31/045; B29C 35/02; B29C 37/005
(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

(30) Priority: 17.10.2017 US 201762573479 P
16.10.2018 US 201862746426 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
18868789.1 / 3697588

(71) Applicant: Magic Leap, Inc.
Plantation, FL 33322 (US)

(72) Inventors:
  • CHANG, Chieh
    Plantation, 33322 (US)
  • PEROZ, Christophe
    Plantation, 33322 (US)
  • BHAGAT, Sharad D.
    Plantation, 33322 (US)
  • PATTERSON, Roy Matthew
    Plantation, 33322 (US)
  • KLUG, Michael Anthony
    Plantation, 33322 (US)
  • CARDEN, Charles Scott
    Plantation, 33322 (US)

(74) Representative: Fish & Richardson P.C. 
Highlight Business Towers Mies-van-der-Rohe-Straße 8
80807 München
80807 München (DE)

 
Remarks:
This application was filed on 25.03.2024 as a divisional application to the application mentioned under INID code 62.
 


(54) METHOD OF FORMING A WAVEGUIDE


(57) A method of forming a waveguide part having a predetermined shape, comprising providing a first mold portion (104a) having a first surface (120a) having a first grating pattern (508, 510) defined thereon; providing a second mold portion (104b) having a second surface (120b) having a second grating pattern (508, 510) defined thereon; providing one or more protrusions (502a, 502b) and one or more recesses (504a), disposed along at least one of the first surface (120a) or the second surface (120b); dispensing a metered amount of a photocurable material (114); adjusting a relative separation between the first surface (120a) and the second surface (120b) so that the photocurable material fills a volume; irradiating the photocurable material in the volume with radiation suitable for photocuring the photocurable material to form a cured film in the shape of the waveguide part; and separating the cured film from the first and second mold portions to provide the waveguide part.