Inventor
RAMSEY ROBERT A
US46 patents
⚠️ This page may combine multiple inventors who share the name “RAMSEY ROBERT A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
REALD SPARK LLC
41 patentsUS11099433B2Aug 24, 2021
Switchable directional display apparatus
REALD SPARK LLC30 citations98
US11092851B2Aug 17, 2021
Optical stack for switchable directional display
REALD SPARK LLC31 citations98
US10976578B2Apr 13, 2021
Reflective optical stack for privacy display
REALD SPARK LLC53 citations98
US10712608B2Jul 14, 2020
Reflective optical stack for privacy display
REALD SPARK LLC47 citations98
US10627670B2Apr 21, 2020
Reflective optical stack for privacy display
REALD SPARK LLC48 citations98
US10303030B2May 28, 2019
Reflective optical stack for privacy display
REALD SPARK LLC111 citations98
US10126575B1Nov 13, 2018
Optical stack for privacy display
REALD SPARK LLC121 citations98
US11573437B2Feb 7, 2023
Directional display apparatus
REALD SPARK LLC16 citations95
US11327358B2May 10, 2022
Optical stack for directional display
REALD SPARK LLC28 citations95
US11442316B2Sep 13, 2022
Directional display apparatus
REALD SPARK LLC37 citations94
US11237417B2Feb 1, 2022
Directional display apparatus
REALD SPARK LLC37 citations94
US10948648B2Mar 16, 2021
Backlights having stacked waveguide and optical components with different coefficients of friction
REALD SPARK LLC37 citations92
US11977286B2May 7, 2024
Observer-tracked privacy display
REALD SPARK LLC13 citations86
US11892717B2Feb 6, 2024
Marks for privacy display
REALD SPARK LLC15 citations86
US11099447B2Aug 24, 2021
Optical stack for privacy display
REALD SPARK LLC15 citations86
US11630336B2Apr 18, 2023
Reflective optical stack for privacy display
REALD SPARK LLC1 citations73
US11474397B2Oct 18, 2022
Optical stack for switchable directional display
REALD SPARK LLC1 citations73
US11474396B2Oct 18, 2022
Optical stack for switchable directional display
REALD SPARK LLC1 citations73
US11181780B2Nov 23, 2021
Optical stack for switchable directional display
REALD SPARK LLC2 citations73
US11109014B2Aug 31, 2021
Privacy display apparatus
REALD SPARK LLC2 citations73
US11016318B2May 25, 2021
Optical stack for switchable directional display
REALD SPARK LLC3 citations73
US10788710B2Sep 29, 2020
Optical stack for switchable directional display
REALD SPARK LLC2 citations73
US12259608B2Mar 25, 2025
Observer-tracked privacy display
REALD SPARK LLC0 citations63
US12140847B2Nov 12, 2024
Display apparatus using application software context for privacy control
REALD SPARK LLC1 citations63
US12066717B2Aug 20, 2024
Optical stack for switchable directional display
REALD SPARK LLC0 citations63
US12038633B2Jul 16, 2024
Reflective optical stack for privacy display
REALD SPARK LLC0 citations63
US11874541B2Jan 16, 2024
Directional display apparatus
REALD SPARK LLC0 citations63
US11668963B2Jun 6, 2023
Directional display apparatus
REALD SPARK LLC0 citations63
US11586073B2Feb 21, 2023
Diffuser for privacy display
REALD SPARK LLC0 citations63
US11506939B2Nov 22, 2022
Directional display apparatus
REALD SPARK LLC1 citations63
US11353752B2Jun 7, 2022
Directional display apparatus
REALD SPARK LLC0 citations63
US11243437B2Feb 8, 2022
Diffuser for privacy display
REALD SPARK LLC0 citations63
US11191146B2Nov 30, 2021
Control of ambient light for a privacy display
REALD SPARK LLC1 citations63
US11114063B2Sep 7, 2021
Privacy display apparatus
REALD SPARK LLC0 citations63
US11106103B2Aug 31, 2021
Privacy display apparatus controlled in response to environment of apparatus
REALD SPARK LLC0 citations63
US11029566B2Jun 8, 2021
Diffuser for privacy display
REALD SPARK LLC1 citations63
US11921367B2Mar 5, 2024
Marks for privacy display
REALD SPARK LLC0 citations62
US11573439B2Feb 7, 2023
Optical stack for privacy display
REALD SPARK LLC0 citations62
US11454853B2Sep 27, 2022
Optical stack for privacy display
REALD SPARK LLC0 citations62
US12587618B2Mar 24, 2026
Display device with uniform off-axis luminance reduction
REALD SPARK LLC0 citations52
US12366701B2Jul 22, 2025
Optical stack for imaging directional backlights
REALD SPARK LLC0 citations52