US 11,786,118 B2
Image display device and image display system
Tomohiro Kawasaki, Yokohama (JP); Masahiro Mizuta, Yokohama (JP); Ryoichi Sataka, Yokohama (JP); and Toshiyuki Namikawa, Yokohama (JP)
Assigned to NIKON CORPORATION, Tokyo (JP)
Filed by NIKON CORPORATION, Tokyo (JP)
Filed on Mar. 19, 2020, as Appl. No. 16/823,833.
Application 16/823,833 is a continuation of application No. PCT/JP2018/034919, filed on Sep. 20, 2018.
Claims priority of application No. 2017-182460 (JP), filed on Sep. 22, 2017; and application No. 2018-076377 (JP), filed on Apr. 11, 2018.
Prior Publication US 2020/0214562 A1, Jul. 9, 2020
Int. Cl. A61B 3/103 (2006.01); A61B 3/00 (2006.01); A61B 3/13 (2006.01); A61B 3/14 (2006.01)
CPC A61B 3/103 (2013.01) [A61B 3/005 (2013.01); A61B 3/13 (2013.01); A61B 3/14 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An image display device comprising:
an optical unit that has a focal point on an incident side of light at a position where an image of an object is set, and that is configured to form an exit pupil; and
an optical element configured to reflect or pass light emitted from the optical unit and relay the exit pupil to a position having a conjugate relationship to the exit pupil, wherein the optical element forms a first eye point with a conjugate relationship to an eye point on a light exit side of the optical unit, and forms a second eye point further to a progression direction side of the light than a position of the first eye point.