(19)
(11) EP 4 308 982 A1

(12)

(43) Date of publication:
24.01.2024 Bulletin 2024/04

(21) Application number: 22715291.5

(22) Date of filing: 21.03.2022
(51) International Patent Classification (IPC): 
G02B 5/18(2006.01)
G03F 7/00(2006.01)
(52) Cooperative Patent Classification (CPC):
G03H 2260/12; G03H 1/0248; G02B 5/1857; G03F 7/001; G03F 7/105; G03F 7/0045; G03F 7/2022; G03F 7/027; G03F 7/035; G02B 2027/0174; C08F 2/50
(86) International application number:
PCT/US2022/021120
(87) International publication number:
WO 2022/198121 (22.09.2022 Gazette 2022/38)
(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

(30) Priority: 19.03.2021 US 202163163594 P
17.02.2022 US 202217674726

(71) Applicant: META PLATFORMS TECHNOLOGIES, LLC
Menlo Park, CA 94025 (US)

(72) Inventors:
  • LANE, Austin
    Menlo Park, California 94025 (US)
  • PURVIS II, Lafe Joseph
    Menlo Park, California 94025 (US)
  • ALIM, Marvin Dion
    Menlo Park, California 94025 (US)

(74) Representative: Murgitroyd & Company 
Murgitroyd House 165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)

   


(54) RECORDING A LATENT HOLOGRAPHIC GRATING AND AMPLIFICATION OF ITS DYNAMIC RANGE