Diffractive optical element with integrated in-coupling, exit pupil expansion, and out-coupling
T Vallius - US Patent 10,429,645, 2019 - Google Patents
In an optical near eye display system, a monolithic three-dimensional optical microstructure
is formed by a waveguide substrate with at least one DOE having grating regions that …
is formed by a waveguide substrate with at least one DOE having grating regions that …
Diffractive optical elements with asymmetric profiles
T Vallius, L Sainiemi - US Patent 10,670,862, 2020 - Google Patents
In an optical display system that includes a waveguide with multiple diffractive optical
elements (DOEs), gratings in one or more of the DOEs may have an asymmetric profile in …
elements (DOEs), gratings in one or more of the DOEs may have an asymmetric profile in …
Diffractive optical elements with varying direction for depth modulation
T Vallius, L Sainiemi - US Patent 9,864,208, 2018 - Google Patents
In an optical display system that includes a waveguide with multiple diffractive optical
elements (DOEs), one or more of the DOEs is configured with gratings that have varying …
elements (DOEs), one or more of the DOEs is configured with gratings that have varying …
Diffractive optical element using crossed grating for pupil expansion
T Vallius - US Patent 10,038,840, 2018 - Google Patents
In an optical display system that includes a waveguide with multiple diffractive optical
elements (DOEs), an in-coupling DOE couples light into the waveguide, an intermediate …
elements (DOEs), an in-coupling DOE couples light into the waveguide, an intermediate …
Reducing stray light transmission in near eye display using resonant grating filter
T Vallius - US Patent 10,241,332, 2019 - Google Patents
(57) ABSTRACT A near eye optical display system comprising a waveguide and diffractive
optical elements (DOEs) for in-coupling, exit pupil expansion, and out-coupling reduces the …
optical elements (DOEs) for in-coupling, exit pupil expansion, and out-coupling reduces the …
Diffractive optical elements with graded edges
T Vallius, L Sainiemi, T Levola, M Mattila - US Patent 9,910,276, 2018 - Google Patents
In an optical system that includes a waveguide with multiple diffractive optical elements
(DOEs) incorporating diffraction gratings, light exiting a trailing edge of an upstream DOE …
(DOEs) incorporating diffraction gratings, light exiting a trailing edge of an upstream DOE …
Diffractive optical element using polarization rotation grating for in-coupling
T Vallius - US Patent 10,073,278, 2018 - Google Patents
In an optical display system that includes a waveguide with multiple diffractive optical
elements (DOEs), an in-coupling DOE couples light into the waveguide, an intermediate …
elements (DOEs), an in-coupling DOE couples light into the waveguide, an intermediate …
Rainbow removal in near-eye display using polarization-sensitive grating
T Vallius - US Patent 10,234,686, 2019 - Google Patents
In a near-eye optical display system comprising a waveguide and diffractive optical
elements (DOEs) configured for in coupling, exit pupil expansion, and out-coupling, a …
elements (DOEs) configured for in coupling, exit pupil expansion, and out-coupling, a …
[PDF][PDF] FOURIER-TRANSFORM INTERFERENCE LITHOGRAPHY
M Bulinski, G Moagar-Poladian - Romanian Reports in Physics, 2016 - researchgate.net
Starting from the concept of interference lithography, developed several years ago, which is
currently used in fabrication of 2D and 3D simple shapes periodical structures in so called …
currently used in fabrication of 2D and 3D simple shapes periodical structures in so called …