OPTICAL DEVICE AND METHOD OF MANUFACTURING THE SAME

    公开(公告)号:US20230144948A1

    公开(公告)日:2023-05-11

    申请号:US17726064

    申请日:2022-04-21

    IPC分类号: G02B1/00

    CPC分类号: G02B1/005

    摘要: 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.