A see-through head or helmet mounted display device , comprising: a see-through member having a see-through area , wherein the see-through member includes a plurality of display segments (20; 20a, 20b) configured to emit visible light and provided within the see-through area in a mutually spaced manner such that the see-through area includes a see-through zone between each pair of adjacent display segments (20; 20a, 20), the see-through zones allowing visible light to pass through the see-through member , wherein the see-through member further includes a plurality of holographic optical elements (26; 26a, 26b) provided within the see-through area , each holographic optical element (26; 26a, 26b) being associated with a respective display segment (20; 20a, 20b), wherein each display segment (20; 20a, 20) is located in a focal plane of the associated holographic optical element (26; 26a, 26b) and each holographic optical element (26; 26a, 26b) is adapted to collimate the visible light emitted by the associated display segment (20; 20a, 20), wherein the display segments are distributed in a two-dimensional array pattern and each display segment includes a plurality of pixel units distributed in a two-dimensional array pattern wherein a distance between adjacent display segments is larger than a distance between adjacent pixel units of a display segment, wherein the holographic optical elements are arranged on a side of the display segments facing away from a user's eye when the see-through head or helmet mounted display device is worn by a user, and wherein each holographic optical element is designed as a holographic concave mirror adapted to reflect visible light emitted by the associated display segment towards the user's eye. a see-through member having a see-through area , wherein the see-through member includes a plurality of display segments (20; 20a, 20b) configured to emit visible light and provided within the see-through area in a mutually spaced manner such that the see-through area includes a see-through zone between each pair of adjacent display segments (20; 20a, 20), the see-through zones allowing visible light to pass through the see-through member , wherein the see-through member further includes a plurality of holographic optical elements (26; 26a, 26b) provided within the see-through area , each holographic optical element (26; 26a, 26b) being associated with a respective display segment (20; 20a, 20b), wherein each display segment (20; 20a, 20) is located in a focal plane of the associated holographic optical element (26; 26a, 26b) and each holographic optical element (26; 26a, 26b) is adapted to collimate the visible light emitted by the associated display segment (20; 20a, 20), wherein the display segments are distributed in a two-dimensional array pattern and each display segment includes a plurality of pixel units distributed in a two-dimensional array pattern wherein a distance between adjacent display segments is larger than a distance between adjacent pixel units of a display segment, wherein the holographic optical elements are arranged on a side of the display segments facing away from a user's eye when the see-through head or helmet mounted display device is worn by a user, and wherein each holographic optical element is designed as a holographic concave mirror adapted to reflect visible light emitted by the associated display segment towards the user's eye. <EOS>