a first liquid crystal panel configured to adjust a phase of first light and including a first liquid crystal layer;

a second liquid crystal panel configured to adjust an amplitude of the first light, located on one side of the first liquid crystal panel and including a second liquid crystal layer including second liquid crystal molecules having a liquid crystal optical axis;

a quarter-wave plate located on a side of the second liquid crystal panel facing away from the first liquid crystal panel; and

a polarizer located on a side of the quarter-wave plate facing away from the first liquid crystal panel,

wherein the second liquid crystal panel includes a first optical axis direction, a difference between a refractive index of the second liquid crystal molecules along a direction of the liquid crystal optical axis and a refractive index perpendicular to the direction of the liquid crystal optical axis is Δn, a thickness of the second liquid crystal layer is d, a wavelength of the first light is λ1, and 0.5λ1≤Δn×d≤0.75λ1, and

wherein:

the first liquid crystal panel further includes a first alignment film with a first alignment direction and a second alignment film with a second alignment direction;

the first alignment film and the second alignment film are respectively located on two sides of the first liquid crystal panel;

the second alignment direction is parallel to a first reference direction;

an angle between an optical axis direction of the quarter-wave plate and the second alignment direction is approximately 30°; and

an angle between a polarization direction of the polarizer and the second alignment direction is approximately 15°.