US 12,392,948 B2
Display apparatus providing expanded eye box
Sunil Kim, Seoul (KR); and Bongsu Shin, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 4, 2022, as Appl. No. 17/736,209.
Claims priority of application No. 10-2021-0151668 (KR), filed on Nov. 5, 2021.
Prior Publication US 2023/0143529 A1, May 11, 2023
Int. Cl. G02B 5/32 (2006.01); G02B 27/01 (2006.01); G02B 27/30 (2006.01); G06F 1/16 (2006.01)
CPC G02B 5/32 (2013.01) [G02B 27/0172 (2013.01); G02B 27/30 (2013.01); G06F 1/163 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0134 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
an image forming apparatus including a plurality of sub-areas respectively configured to form a plurality of images by using light; and
a plurality of holographic optical elements corresponding to the plurality of sub-areas in a one-to-one manner, each of the plurality of holographic optical elements configured to collimate light emitted from the plurality of sub-areas corresponding to the plurality of images into respective parallel beams,
wherein each of the respective parallel beams are emitted in different directions such that at least two of the respective parallel beams corresponding to the plurality of images overlap on a single pupil of a user to form an eye box.