Inventor
KOYAMA TAKEHIRO
JP14 patents
⚠️ This page may combine multiple inventors who share the name “KOYAMA TAKEHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
8 patentsUS6736513B2May 18, 2004
Projection type image display apparatus
CANON KK22 citations85
US6919992B2Jul 19, 2005
Color separating-combining optical system, image display optical system, and projection image display apparatus
CANON KK9 citations72
US7961269B2Jun 14, 2011
Optical modulation element unit, projection optical unit, and image projection apparatus
CANON KK2 citations61
US7868963B2Jan 11, 2011
Optical modulation element unit, projection optical unit, and image projection apparatus
CANON KK3 citations61
US7158308B2Jan 2, 2007
Color separating-combining optical system, image display optical system, and projection image display apparatus
CANON KK3 citations61
US10620513B2Apr 14, 2020
Projection type display apparatus
CANON KK0 citations50
US9618831B2Apr 11, 2017
Image projector
CANON KK0 citations50
US9726884B2Aug 8, 2017
Displaying apparatus unit and projection type displaying apparatus
CANON KK0 citations40
KOYAMA TAKEHIRO
4 patentsUS9091910B2Jul 28, 2015
Image projector
KOYAMA TAKEHIRO2 citations59
US8724241B2May 13, 2014
Prism unit and a projection image display apparatus
KOYAMA TAKEHIRO0 citations48
US8233227B2Jul 31, 2012
Prism unit and a projection image display apparatus
KOYAMA TAKEHIRO0 citations48
US8888293B2Nov 18, 2014
Image projection apparatus having an insertable and extractable optical element
KOYAMA TAKEHIRO0 citations38