Patent ID: 11892641
Assignee: GOERTEK INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A head-mounted display, comprising a display screen and an optical system, wherein the head-mounted display further comprises:
a wavefront detector configured to detect a wavefront of a beam emitted from the optical system;
a camera configured to collect an eyeball image of a wearer;
a wavefront corrector installed on a side of the optical system facing toward a human eye and adjust a wavefront incident to the human eye;
a processor configured to receive wavefront data detected and output by the wavefront detector, determine a visual axis of the human eye according to the eyeball image collected by the camera, establish a rectangular coordinate system by performing cross calibration with an intersection point of the optical axis of the optical system and the display screen as an origin A (0,0), acquire coordinates (x, y) of the fixation point B, determine the deviation between the visual axis of the human eye and the optical axis of the optical system by calculating a distance ρ between points A and B and an included angle θ between a connection line of points A and B and Y axis, determine a deviation between the visual axis of the human eye and an optical axis of the optical system, calculate, by using a Zernike polynomial, wavefront data W2 of the human eye when looking at the fixation point B according to the ρ and θ calculated, calculate a relative change ΔW of wavefront aberration according to the wavefront data W2 and the wavefront data W1 detected and output by the wavefront detector, and control the wavefront corrector to correct the wavefront incident to the human eye according to the relative change ΔW, so that a correspondence between the wavefront incident to the human eye and the visual axis is consistent with a correspondence between the wavefront of the beam emitted from the optical system and the optical axis of the optical system.