Applied Materials, Inc. (20250093660). EFFICIENCY-LADDERED CROPPED EXIT PUPIL EXPANDER FOR COMPACT DIFRACTIVE WAVEGUIDES
EFFICIENCY-LADDERED CROPPED EXIT PUPIL EXPANDER FOR COMPACT DIFRACTIVE WAVEGUIDES
Organization Name
Inventor(s)
Simon Lorenzo of Santa Clara CA US
David Alexander Sell of Santa Clara CA US
EFFICIENCY-LADDERED CROPPED EXIT PUPIL EXPANDER FOR COMPACT DIFRACTIVE WAVEGUIDES
This abstract first appeared for US patent application 20250093660 titled 'EFFICIENCY-LADDERED CROPPED EXIT PUPIL EXPANDER FOR COMPACT DIFRACTIVE WAVEGUIDES
Original Abstract Submitted
embodiments of the present disclosure relate to devices and methods related to relate to augmented reality waveguide combiners. the device includes a waveguide combiner, the waveguide combiner includes an input coupler operable to receive a light and in-couple the light into the waveguide combiner, an exit pupil expander (epe) adjacent to a grating of the input coupler, the epe having a laddered structure, the laddered structure comprising at least one band, the at least one band comprising a plurality of grating structures, at least one grating structure of the plurality of grating structures has a varying depth, a varying duty cycle, or a varying pitch that is different than a depth, a duty cycle, or pitch than an adjacent grating structure of the plurality of grating structures, and an output coupler operable to receive the light from the epe and transmit the light onto a user field of view (fov).
