公开(公告)号：US12153191B2

公开(公告)日：2024-11-26

申请号：US17726064

申请日：2022-04-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngchul Leem ,  Jeongyub Lee ,  Haesung Kim

IPC: G02B1/00

Abstract: An optical device forms a refractive index distribution for exhibiting a certain phase delay profile with respect to light in a visible light wavelength, and includes a nanopattern layer including a crystalline compound having a refractive index greater than 3 with respect to the light in the visible light wavelength band and a height equal to or less than 2 μm. The nanopattern layer may include the crystalline compound grown according to a selective epitaxial growth method, and accordingly, may have a height beneficial for a manufacturing process. Thus, the efficiency of the optical device may be improved.