Inventor
AASTUEN DAVID J W
US30 patents
⚠️ This page may combine multiple inventors who share the name “AASTUEN DAVID J W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
3M INNOVATIVE PROPERTIES CO
18 patentsUS6721096B2Apr 13, 2004
Polarizing beam splitter
3M INNOVATIVE PROPERTIES CO198 citations99
US6486997B1Nov 26, 2002
Reflective LCD projection system using wide-angle Cartesian polarizing beam splitter
3M INNOVATIVE PROPERTIES CO348 citations99
US6166797ADec 26, 2000
Diffusion barrier layers with microstructured spacing members for liquid crystal display panel substrates
3M INNOVATIVE PROPERTIES CO88 citations98
US7023602B2Apr 4, 2006
Reflective LCD projection system using wide-angle Cartesian polarizing beam splitter and color separation and recombination prisms
3M INNOVATIVE PROPERTIES CO56 citations96
US6786604B2Sep 7, 2004
Projection system having low astigmatism
3M INNOVATIVE PROPERTIES CO41 citations96
US6672721B2Jan 6, 2004
Projection system having low astigmatism
3M INNOVATIVE PROPERTIES CO41 citations96
US7357511B2Apr 15, 2008
Stress birefringence compensation in polarizing beamsplitters and systems using same
3M INNOVATIVE PROPERTIES CO18 citations92
US7237899B2Jul 3, 2007
Highly efficient single panel and two panel projection engines
3M INNOVATIVE PROPERTIES CO25 citations92
US6992822B2Jan 31, 2006
Projection display system using a diffuse reflecting polarizer
3M INNOVATIVE PROPERTIES CO49 citations92
US7568804B2Aug 4, 2009
Highly efficient single panel and two panel projection engines
3M INNOVATIVE PROPERTIES CO10 citations84
US7329006B2Feb 12, 2008
Projection system having low astigmatism
3M INNOVATIVE PROPERTIES CO11 citations84
US7652820B2Jan 26, 2010
Reflective LCD projection system using wide-angle cartesian polarizing beam splitter and color separation and recombination prisms
3M INNOVATIVE PROPERTIES CO5 citations74
US11358355B2Jun 14, 2022
Shaped optical films and methods of shaping optical films
3M INNOVATIVE PROPERTIES CO2 citations73
US9952443B2Apr 24, 2018
Projection subsystem
3M INNOVATIVE PROPERTIES CO2 citations73
US7731366B2Jun 8, 2010
Stress birefringence compensation in polarizing beamsplitters and systems using same
3M INNOVATIVE PROPERTIES CO4 citations63
US6525816B2Feb 25, 2003
Method for measuring the absolute light throughput of reflective-mode displays in an optical system
3M INNOVATIVE PROPERTIES CO6 citations63
US10670873B2Jun 2, 2020
Projection subsystem
3M INNOVATIVE PROPERTIES CO0 citations52
US7542194B2Jun 2, 2009
Birefringence-compensated liquid crystal display and projection system using same
3M INNOVATIVE PROPERTIES CO0 citations52
MINNESOTA MINING & MFG
5 patentsUS5686979ANov 11, 1997
Optical panel capable of switching between reflective and transmissive states
MINNESOTA MINING & MFG630 citations99
US5300263AApr 5, 1994
Method of making a microlens array and mold
MINNESOTA MINING & MFG157 citations99
US5398125AMar 14, 1995
Liquid crystal projection panel having microlens arrays, on each side of the liquid crystal, with a focus beyond the liquid crystal
MINNESOTA MINING & MFG115 citations98
US5519539AMay 21, 1996
Microlens array with microlenses having modified polygon perimeters
MINNESOTA MINING & MFG50 citations96
US5699139ADec 16, 1997
Liquid crystal device having pressure relief structure
MINNESOTA MINING & MFG35 citations92
3M INNOVATIVE PROPERTIES COMPANY
4 patentsUS11865808B2Jan 9, 2024
Shaped optical films and methods of shaping optical films
3M INNOVATIVE PROPERTIES COMPANY2 citations73
US12433140B2Sep 30, 2025
Display and display system
3M INNOVATIVE PROPERTIES COMPANY0 citations52
US12386191B2Aug 12, 2025
Optical film and polarizing beam splitter
3M INNOVATIVE PROPERTIES COMPANY0 citations52
US12099226B2Sep 24, 2024
Optical system
3M INNOVATIVE PROPERTIES COMPANY0 citations52