(19)
(11) EP 4 405 723 A1

(12)

(43) Date of publication:
31.07.2024 Bulletin 2024/31

(21) Application number: 22769829.7

(22) Date of filing: 22.08.2022
(51) International Patent Classification (IPC): 
G02B 3/00(2006.01)
G02B 25/00(2006.01)
(52) Cooperative Patent Classification (CPC):
G02B 25/001; G02B 3/0087
(86) International application number:
PCT/US2022/041075
(87) International publication number:
WO 2023/048866 (30.03.2023 Gazette 2023/13)
(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

(30) Priority: 21.09.2021 US 202163246666 P
18.08.2022 US 202217890880

(71) Applicant: Peak Nano Optics Llc
Valley View, Ohio 44125 (US)

(72) Inventors:
  • FEIN, Howard
    Richmond Heights, Ohio 44143 (US)
  • LEPKOWICZ, Richard Stanley
    Great Falls, Virginia 22066 (US)

(74) Representative: Barker Brettell LLP 
100 Hagley Road Edgbaston
Birmingham, West Midlands B16 8QQ
Birmingham, West Midlands B16 8QQ (GB)

   


(54) EYEPIECES EMPLOYING POLYMERIC LAYERED GRADIENT REFRACTIVE INDEX (LGRIN) OPTICAL ELEMENTS FOR PERFORMANCE ENHANCEMENT