A display device comprising: a display panel (11, 511) comprising pixels arranged in a matrix; a laminated type optical member (22, 122, 422, 522); and a light source configured to apply light to the laminated type optical member; wherein the laminated type optical member comprising: a first optical member (23, 123); a second optical member (24, 124, 224, 324) comprising a base having a sheet shape and a lens portion (29, 229, 329) including unit lenses (29a, 229a, 329a) formed on a plate surface of the base on a first optical member side, the second optical member being disposed on a light entering side relative to the first optical member with a gap between the first optical member and the second optical member to overlap the first optical member; and spacers (25, 125, 225, 325, 425) disposed between the first optical member and the second optical member to hold the gap between the first optical member and the second optical member to form an air layer (25AR, 225AR, 325AR, 425AR), the spacers being formed in linear shapes along a plate surface of the second optical member; wherein linear axes (25AX, 125AX, 225AX, 325AX, 425AX) defined by the linear shapes of the spacers are tilted relative to an arrangement direction of the pixels, the unit lenses are arranged along a direction that crosses at least the linear axes, and the spacers are arranged at intervals in a direction that crosses the linear axes, each of the intervals is larger than the interval between the unit lenses in the direction that crosses the linear axes. a display panel (11, 511) comprising pixels arranged in a matrix; a laminated type optical member (22, 122, 422, 522); and a light source configured to apply light to the laminated type optical member; wherein the laminated type optical member comprising: a first optical member (23, 123); a second optical member (24, 124, 224, 324) comprising a base having a sheet shape and a lens portion (29, 229, 329) including unit lenses (29a, 229a, 329a) formed on a plate surface of the base on a first optical member side, the second optical member being disposed on a light entering side relative to the first optical member with a gap between the first optical member and the second optical member to overlap the first optical member; and spacers (25, 125, 225, 325, 425) disposed between the first optical member and the second optical member to hold the gap between the first optical member and the second optical member to form an air layer (25AR, 225AR, 325AR, 425AR), the spacers being formed in linear shapes along a plate surface of the second optical member; wherein linear axes (25AX, 125AX, 225AX, 325AX, 425AX) defined by the linear shapes of the spacers are tilted relative to an arrangement direction of the pixels, the unit lenses are arranged along a direction that crosses at least the linear axes, and the spacers are arranged at intervals in a direction that crosses the linear axes, each of the intervals is larger than the interval between the unit lenses in the direction that crosses the linear axes. a first optical member (23, 123); a second optical member (24, 124, 224, 324) comprising a base having a sheet shape and a lens portion (29, 229, 329) including unit lenses (29a, 229a, 329a) formed on a plate surface of the base on a first optical member side, the second optical member being disposed on a light entering side relative to the first optical member with a gap between the first optical member and the second optical member to overlap the first optical member; and spacers (25, 125, 225, 325, 425) disposed between the first optical member and the second optical member to hold the gap between the first optical member and the second optical member to form an air layer (25AR, 225AR, 325AR, 425AR), the spacers being formed in linear shapes along a plate surface of the second optical member; wherein linear axes (25AX, 125AX, 225AX, 325AX, 425AX) defined by the linear shapes of the spacers are tilted relative to an arrangement direction of the pixels, the unit lenses are arranged along a direction that crosses at least the linear axes, and the spacers are arranged at intervals in a direction that crosses the linear axes, each of the intervals is larger than the interval between the unit lenses in the direction that crosses the linear axes.