US 12,470,795 B2
Optical system and method for under display camera
Stepan Evgenievich Ivanov, Moscow (RU); Elena Gennadievna Malinovskaya, Moscow (RU); Sergey Evgenievich Dubynin, Moscow (RU); and Alexey Grigorievich Anikanov, Moscow (RU)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 4, 2024, as Appl. No. 18/594,412.
Claims priority of application No. 2023105125 (RU), filed on Mar. 6, 2023; and application No. 10-2023-0074289 (KR), filed on Jun. 9, 2023.
Prior Publication US 2024/0305875 A1, Sep. 12, 2024
Int. Cl. H04N 23/55 (2023.01); G02B 27/42 (2006.01)
CPC H04N 23/55 (2023.01) [G02B 27/4205 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical system of an under-display camera (UDC), comprising:
a display comprising pixels having a first periodic structure;
an image sensor disposed under a screen of the display;
one or more optical elements disposed between the display and the image sensor and configured to form an image of an external scene on the image sensor; and
an additional diffraction member comprising an array of elements having a second periodic structure and configured such that the second periodic structure overlaps the first periodic structure by an offset of the elements to redirect a second light which is a portion of a first light corresponding to the external scene transmitted to the image sensor through the display.