A multi-view display device for providing multiple views to one or more viewers, the device comprising: an image forming arrangement having an array of display pixels for producing a display; and an optical beam deflection arrangement arranged in registration with the image forming arrangement such that light from different pixels is directed by the optical beam deflection arrangement into different ones of the multiple views, wherein the optical beam deflection arrangement comprises: a substrate formed of a solid material having a substrate surface; a first layer formed of an optically transparent solid material, having a first refractive index and having an optical beam deflection surface at least partly defined by a plurality of curved surfaces wherein the optical beam deflection arrangement comprises: a second layer of a gaseous and/or liquid material confined between the substrate surface and the optical beam deflection surface, and having a second refractive index, wherein the second refractive index is different from the first refractive index, wherein the substrate surface is spaced from the deflection surface by a plurality of spacers (41, 43, 45) which are extended from the substrate, and wherein the spacers make point and/or line contact with one or more first portions of the optical beam deflection surface, wherein the spacers are elongate having a length and width perpendicular to the length, where the spacer length and spacer width extend in a plane parallel to the plane of the substrate, and wherein each spacer makes point and/or line contact with at least two different curved surfaces, characterized in that each of the first portions of the curved surfaces is spaced from the substrate surface with a minimum local distance for that curved surface, and wherein the spacers are extending from the substrate so that for a first subset of the curved surfaces the line and/or point contact occurs in the first portions of the curved surfaces of the first subset. an image forming arrangement having an array of display pixels for producing a display; and an optical beam deflection arrangement arranged in registration with the image forming arrangement such that light from different pixels is directed by the optical beam deflection arrangement into different ones of the multiple views, wherein the optical beam deflection arrangement comprises: a substrate formed of a solid material having a substrate surface; a first layer formed of an optically transparent solid material, having a first refractive index and having an optical beam deflection surface at least partly defined by a plurality of curved surfaces a substrate formed of a solid material having a substrate surface; a first layer formed of an optically transparent solid material, having a first refractive index and having an optical beam deflection surface at least partly defined by a plurality of curved surfaces wherein the optical beam deflection arrangement comprises: a second layer of a gaseous and/or liquid material confined between the substrate surface and the optical beam deflection surface, and having a second refractive index, wherein the second refractive index is different from the first refractive index, wherein the substrate surface is spaced from the deflection surface by a plurality of spacers (41, 43, 45) which are extended from the substrate, and wherein the spacers make point and/or line contact with one or more first portions of the optical beam deflection surface, wherein the spacers are elongate having a length and width perpendicular to the length, where the spacer length and spacer width extend in a plane parallel to the plane of the substrate, and wherein each spacer makes point and/or line contact with at least two different curved surfaces, characterized in that each of the first portions of the curved surfaces is spaced from the substrate surface with a minimum local distance for that curved surface, and wherein the spacers are extending from the substrate so that for a first subset of the curved surfaces the line and/or point contact occurs in the first portions of the curved surfaces of the first subset. a second layer of a gaseous and/or liquid material confined between the substrate surface and the optical beam deflection surface, and having a second refractive index, wherein the second refractive index is different from the first refractive index, wherein the substrate surface is spaced from the deflection surface by a plurality of spacers (41, 43, 45) which are extended from the substrate, and wherein the spacers make point and/or line contact with one or more first portions of the optical beam deflection surface, wherein the spacers are elongate having a length and width perpendicular to the length, where the spacer length and spacer width extend in a plane parallel to the plane of the substrate, and wherein each spacer makes point and/or line contact with at least two different curved surfaces, characterized in that each of the first portions of the curved surfaces is spaced from the substrate surface with a minimum local distance for that curved surface, and wherein the spacers are extending from the substrate so that for a first subset of the curved surfaces the line and/or point contact occurs in the first portions of the curved surfaces of the first subset.