The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2022
Filed:
Oct. 23, 2019
Slim backlight unit for holographic display device and holographic display device including the same
Samsung Electronics Co., Ltd., Suwon-si, KR;
Yunhee Kim, Seoul, KR;
German B. Dubinin, Moscow area, RU;
Alexander V. Morozov, Moscow area, RU;
Sunil Kim, Seoul, KR;
Hoon Song, Yongin-si, KR;
Jungkwuen An, Cheonan-si, KR;
Young Kim, Yongin-si, KR;
Hongseok Lee, Seoul, KR;
Chilsung Choi, Suwon-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Abstract
A backlight unit for a binocular-holographic display device and a holographic display device including the same are provided. The backlight unit includes a light source unit which outputs light, a first beam expansion unit which expands, in a first direction, the light output from the light source unit, a second beam expansion unit which expands, in a second direction perpendicular to the first direction, the light output from the first beam expansion unit, and a beam deflection unit which diffracts light incident on the first beam expansion unit. The holographic display device includes the backlight unit, a field lens, and a spatial light modulator.