HEAD-MOUNTED DISPLAY (HMD) WITH SPATIALLY-VARYING RETARDER OPTICS - Patent 4025952

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EP 4 025 952 A1

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(43)	Date of publication:
	13.07.2022 Bulletin 2022/28

(21)	Application number: 20890923.4

(22)	Date of filing: 19.11.2020

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International Patent Classification (IPC):

G02B 27/00^(2006.01)

G02B 27/28^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	G02B 5/3083; G02B 27/0018; G02B 27/283; G02B 27/0172; G02B 27/62

(86)	International application number:
	PCT/US2020/061293

(87)	International publication number:
	WO 2021/102148 (27.05.2021 Gazette 2021/21)

(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

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Priority:

22.11.2019 US 201916692823

(71)	Applicant: Valve Corporation
	Bellevue, Washington 98004 (US)

(72)	Inventors:
	HUDMAN, Joshua Mark Bellevue, Washington 98004 (US) MCCRACKEN, Ivan A. Bellevue, Washington 98004 (US)

(74)	Representative: Swindell & Pearson Limited
	48 Friar Gate Derby DE1 1GY Derby DE1 1GY (GB)

(54)	HEAD-MOUNTED DISPLAY (HMD) WITH SPATIALLY-VARYING RETARDER OPTICS