US 12,271,522 B2
Line-of-sight detection device and head mounted display device
Yoshihiko Konno, Tokyo (JP); and Koichi Ito, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 22, 2023, as Appl. No. 18/395,406.
Claims priority of application No. 2022-208202 (JP), filed on Dec. 26, 2022.
Prior Publication US 2024/0211036 A1, Jun. 27, 2024
Int. Cl. G06F 3/01 (2006.01)
CPC G06F 3/013 (2013.01) 17 Claims
OG exemplary drawing
 
1. A line-of-sight detection device comprising:
an image sensor disposed on an edge of an opening portion and configured to capture an image of an eye facing a lens disposed on the opening potion; and
a plurality of light sources disposed along the edge of the opening portion and arranged to illuminate the eye, wherein
a number of light sources disposed on opposite side of the image sensor with respect to an optical axis of the lens is more than a number of light sources disposed on same side of image sensor with respect to the optical axis, and
light emitted from at least one of the plurality of light sources transmits through the lens, is reflected by the eye, transmits through the lens again, and enters the image sensor.