Meta optical device and electronic device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJunsuk Rho, Gyeongtae Kim, Yeseul Kim, Jooyeong Yun, Inki Kim
Life of this patent
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Abstract
A meta optical device for forming structured light by modulating incident light having a preset wavelength includes a plurality of supercells each including a plurality of nanostructures having a shape dimension less than the preset wavelength, and shapes and arrangements of the plurality of nanostructures are designed to form the structured light as a point pattern having a viewing angle greater than 160° in horizontal and vertical directions.
Claims8
A meta optical device for forming structured light by modulating incident light having a preset wavelength, the meta optical device comprising:
- a plurality of supercells each including a plurality of nanostructures each having a shape dimension less than the preset wavelength,
- wherein shapes and arrangements of the plurality of nanostructures are configured to form the structured light of a point pattern having a viewing angle greater than 160° in horizontal and vertical directions,
- wherein the shapes and the arrangements of the plurality of nanostructures are designed such that a ratio of an intensity of an mth order diffraction light with respect to an intensity of a first order diffraction light is greater than 50%, and
- wherein, m denotes a largest number of integers less than (n*P/λ), n denotes a number of the nanostructures in each of the supercells, P denotes an arrangement pitch of the nanostructures in each of the supercells, and λ denotes the preset wavelength.
A meta optical device for forming structured light by modulating incident light having a preset wavelength, the meta optical device comprising:
- a plurality of supercells each including a plurality of nanostructures each having a shape dimension less than the preset wavelength,
- wherein shapes and arrangements of the plurality of nanostructures are configured to form the structured light of a point pattern having a viewing angle greater than 160° in horizontal and vertical directions,
- wherein a phase profile generated by each of the plurality of supercells is represented as a second function that is obtained by an iterative Fourier transform of a first function defined in a spatial frequency domain,
- wherein the first function is defined to have a value of 1 within a circle with radius 1/λ and a value of 0 in a remaining space in the spatial frequency domain defined by (fx, fy) satisfying conditions 1/(2P)≤fx≤1/(2P), 1/(2P)≤fy≤1/(2P), and
- wherein P denotes an arrangement pitch of the nanostructures and λ denotes the preset wavelength.
Dependencies are inferred from the claim text.