Eyeball tracking system and eyeball tracking method

An eyeball tracking method, comprising:

• transmitting, by an illumination light source, an illumination light ray to a beam scanner;
• projecting, by the beam scanner, the illumination light ray onto an entrance pupil optical apparatus which reflects or reproduces the illumination light ray, wherein the reflected or reproduced illumination light ray illuminates an eyeball;
• collecting, by a photoelectric detector, a receive optical power value of an eyeball reflection light ray;
• sending the receive optical power value to a controller, wherein the eyeball reflection light ray is a light ray reflected by the eyeball when the reflected or reproduced illumination light ray illuminates the eyeball;
• receiving, by the controller, the receive optical power value sent by the photoelectric detector,
• determining, based on the receive optical power value, an optical power reference value that satisfies a specified functional relationship with the receive optical power value;
• and
• determining an eyeball line-of-sight direction that matches the optical power reference value as a current gaze direction of the eyeball based on a prestored one-to-one matching relationship between a plurality of eyeball gaze directions and a plurality of optical power reference values.

An eyeball tracking method, comprising:

• transmitting, by an illumination light source, an illumination light ray to a beam scanner;
• projecting, by the beam scanner, the illumination light ray illuminating an eyeball at a preset angle;
• collecting, by a photoelectric detector, a receive optical power value of an eyeball reflection light ray;
• and
• sending the receive optical power value to a controller, wherein the eyeball reflection light ray is a light ray reflected by the eyeball when the projected illumination light ray illuminates the eyeball;
• and
• receiving, by the controller, the receive optical power value sent by the photoelectric detector,
• determining, based on the receive optical power value, an optical power reference value that satisfies a specified functional relationship with the receive optical power value, and determining an eyeball line-of-sight direction that matches the optical power reference value as a current gaze direction of the eyeball based on a prestored one-to-one matching relationship between a plurality of eyeball gaze directions and a plurality of optical power reference values.