An optical device for reproducing a three dimensional lighting image, comprising: a hologram recording member on which a three dimensional hologram image is recorded; a light source for reproducing the hologram image; the light source is a single light source composed of one light source member ; a first reflecting surface for reproducing the hologram image downstream the hologram recording member by reflecting a light from the light source to a rear side of the hologram recording member at a predetermined angle; and a light path between the light source and the hologram recording member , wherein a light path direction is defined from the light source towards the hologram recording member , wherein the first reflecting surface is arranged with respect to the hologram recording member such that the predetermined angle is at a first incident angle within the same range as the range of incident angles of a reference beam that has been irradiated to record the hologram image on the hologram recording member, thereby reproducing, for that angle range, the hologram image downstream the hologram recording member characterized in that the optical device further comprises a second, further, reflecting surface for generating a backlight by reflecting the light from the light source into the rear side of the hologram recording member , wherein the second reflecting surface is arranged with respect to the hologram recording member such that the light from the light source reflected by the second reflecting surface enters the hologram recording member at a second incident angle different from the first incident angle of the light from the light source reflected by the first reflecting surface , thereby not being diffracted by the hologram recording member. a hologram recording member on which a three dimensional hologram image is recorded; a light source for reproducing the hologram image; the light source is a single light source composed of one light source member ; a first reflecting surface for reproducing the hologram image downstream the hologram recording member by reflecting a light from the light source to a rear side of the hologram recording member at a predetermined angle; and a light path between the light source and the hologram recording member , wherein a light path direction is defined from the light source towards the hologram recording member , wherein the first reflecting surface is arranged with respect to the hologram recording member such that the predetermined angle is at a first incident angle within the same range as the range of incident angles of a reference beam that has been irradiated to record the hologram image on the hologram recording member, thereby reproducing, for that angle range, the hologram image downstream the hologram recording member characterized in that the optical device further comprises a second, further, reflecting surface for generating a backlight by reflecting the light from the light source into the rear side of the hologram recording member , wherein the second reflecting surface is arranged with respect to the hologram recording member such that the light from the light source reflected by the second reflecting surface enters the hologram recording member at a second incident angle different from the first incident angle of the light from the light source reflected by the first reflecting surface , thereby not being diffracted by the hologram recording member. <EOS>