Abstract: An optical module includes one or more laminating lenses where object side surfaces and image side surfaces of the laminating lenses are curved surfaces. The optical module also includes at least one of a linear polarizer, a first quarter-phase retarder, a partially transmissive and partially reflective film, a second quarter-phase retarder, and a reflective polarizer that are laminated to the object side surfaces or the image side surfaces of the laminating lenses. The object side surfaces or the image side surfaces of the laminating lenses are not designed as planes to facilitate diaphragm lamination.

Abstract: An image calibration method and a device are provided. The method includes: obtaining a pupil position offset of a user and a visual acuity of the user, where the pupil position offset of the user is an offset of a pupil of the user relative to an optical axis; and adjusting a to-be-displayed image based on the pupil position offset of the user and the visual acuity of the user. In this way, when the user wears a head-mounted display device improperly, a point seen by the user when the user looks straight ahead is a center point of an image displayed on a display.

Abstract: An eye-movement tracking apparatus and an electronic device are provided. The eye-movement tracking apparatus includes a light source, a lens group, a hot mirror, and a compact camera module. The light source is configured to emit a light ray to an eyeball of a user. The light ray is reflected by the eyeball to form a first light ray and a second light ray that are emitted to the lens group. The first light ray is reflected by the hot mirror for N times to form a third light ray. The second light ray is reflected by the hot mirror for M times to form a fourth light ray. Both M and N are natural numbers, and M and N are different. The optical component allow the third light ray to enter the image sensor, and prevent the fourth light ray from entering the image sensor.

Abstract: An optical imaging system and a head-mounted display apparatus are provided. The optical imaging system includes a display and a lens group. The display is located on a side that is of the lens group and that is away from a human eye. The display includes a display panel and a cover plate. The cover plate is disposed on a side that is of the display panel and that faces the lens group. A thickness range of the cover plate is related to an equivalent image focal length (f?) of the lens group, a refractive index (n) of the cover plate, and a distance of distinct vision (a) for the human eye.