US Patent 10413177 Eyeball observation device, eyewear terminal, line-of-sight detection method, and program

There is provided an eyeball observation device, which can stably detect a line of sight, the eyeball observation device including: at least one infrared light source configured to radiate polarized infrared light onto an eyeball of a user; and at least one imaging device configured to capture an image of the eyeball irradiated with the polarized infrared light and to be capable of simultaneously capturing a polarization image with at least three directions.