A display system (30, 40, 50, 60, 70), comprising a light source (31, 41, 51), a light homogenizing element (36, 46, 56, 66, 76), a first light modulator (321, 421, 521, 621, 721), a second light modulator (322, 422, 522, 622, 722), and a recovery device (33, 43, 53, 73), wherein: the light source (31, 41, 51) is configured to emit original light which is incident from an incidence side of the light homogenizing element (36, 46, 56, 66, 76) to the light homogenizing element (36, 46, 56, 66, 76); the light homogenizing element (36, 46, 56, 66, 76) is configured to homogenize the light incident from the incidence side thereof, and the homogenized light is emitted to the first light modulator (321, 421, 521, 621, 721); the first light modulator (321, 421, 521, 621, 721) modulates the light incident thereto according to image data of an image to be displayed, so as to form first image light for displaying the image and first non-image light not for displaying the image; the first image light is incident to the second light modulator (322, 422, 522, 622, 722), the second light modulator (322, 422, 522, 622, 722) modulates the light incident thereto according to the image data of the image to be displayed, so as to form second image light for displaying the image and second non-image light not for displaying the image; and characterized in that the recovery device (33, 43, 53, 73) is configured to recover the first non-image light and the second non-image light in such a manner that the first non-image light and the second non-image light are incident from the incidence side of the light homogenizing element (36, 46, 56, 66, 76) to the light homogenizing element(36, 46, 56, 66, 76), and the first non-image light and the second non-image light are homogenized by the light homogenizing element (36, 46, 56, 66, 76). the light source (31, 41, 51) is configured to emit original light which is incident from an incidence side of the light homogenizing element (36, 46, 56, 66, 76) to the light homogenizing element (36, 46, 56, 66, 76); the light homogenizing element (36, 46, 56, 66, 76) is configured to homogenize the light incident from the incidence side thereof, and the homogenized light is emitted to the first light modulator (321, 421, 521, 621, 721); the first light modulator (321, 421, 521, 621, 721) modulates the light incident thereto according to image data of an image to be displayed, so as to form first image light for displaying the image and first non-image light not for displaying the image; the first image light is incident to the second light modulator (322, 422, 522, 622, 722), the second light modulator (322, 422, 522, 622, 722) modulates the light incident thereto according to the image data of the image to be displayed, so as to form second image light for displaying the image and second non-image light not for displaying the image; and characterized in that the recovery device (33, 43, 53, 73) is configured to recover the first non-image light and the second non-image light in such a manner that the first non-image light and the second non-image light are incident from the incidence side of the light homogenizing element (36, 46, 56, 66, 76) to the light homogenizing element(36, 46, 56, 66, 76), and the first non-image light and the second non-image light are homogenized by the light homogenizing element (36, 46, 56, 66, 76).