Abstract: A motheye mold fabrication method of at least one embodiment of the present invention includes the steps of: (a) preparing an Al base in which an Al content is less than 99.99 mass %; (b) partially anodizing the Al base to form a porous alumina layer which has a plurality of very small recessed portions; (c) after step (b), allowing the porous alumina layer to be in contact with an etchant which contains an anodic inhibitor, thereby enlarging the plurality of very small recessed portions of the porous alumina layer; and (d) after step (c), further anodizing the Al base to grow the plurality of very small recessed portions.

Abstract: A motheye mold fabrication method of at least one embodiment of the present invention includes the steps of: (a) preparing an Al base in which an Al content is less than 99.99 mass %; (b) partially anodizing the Al base to form a porous alumina layer which has a plurality of very small recessed portions; (c) after step (b), allowing the porous alumina layer to be in contact with an etchant which contains an anodic inhibitor, thereby enlarging the plurality of very small recessed portions of the porous alumina layer; and (d) after step (c), further anodizing the Al base to grow the plurality of very small recessed portions.

Abstract: A motheye mold fabrication method of at least one embodiment of the present invention includes the steps of: (a) preparing an Al base in which an Al content is less than 99.99 mass %; (b) partially anodizing the Al base to form a porous alumina layer which has a plurality of very small recessed portions; (c) after step (b), allowing the porous alumina layer to be in contact with an etchant which contains an anodic inhibitor, thereby enlarging the plurality of very small recessed portions of the porous alumina layer; and (d) after step (c), further anodizing the Al base to grow the plurality of very small recessed portions.

Abstract: A motheye mold fabrication method of at least one embodiment of the present invention includes the steps of: (a) preparing an Al base in which an Al content is less than 99.99 mass %; (b) partially anodizing the Al base to form a porous alumina layer which has a plurality of very small recessed portions; (c) after step (b), allowing the porous alumina layer to be in contact with an etchant which contains an anodic inhibitor, thereby enlarging the plurality of very small recessed portions of the porous alumina layer; and (d) after step (c), further anodizing the Al base to grow the plurality of very small recessed portions.

Abstract: A method of making a micro corner cube array includes the steps of: providing a substrate, at least a surface portion of which consists of cubic single crystals and which has a surface that is substantially parallel to {111} planes of the crystals; and dry-etching the surface of the substrate anisotropically with an etching gas that is reactive with the substrate, thereby forming a plurality of unit elements of the micro corner cube array on the surface of the substrate. Each of the unit elements is made up of a number of crystal planes that have been etched at a lower etch rate than the {111} planes of the crystals.

Abstract: A corner cube reflector includes a two-dimensional arrangement of unit elements. The unit elements are arranged at a pitch of 200 ?m or less. As viewed in a direction from which incoming light is coming, each unit element has a peak point and a bottom point. A peak portion, including the peak point, has an excessive portion and/or a missing portion as compared with an ideal peak portion of an ideal corner cube. The level of the peak point is lower than that of the ideal peak point of the ideal corner cube. An average level difference h2 between the level of the bottom point and that of an ideal bottom point of the ideal corner cube is smaller than an average level difference h1 between the level of the peak point and that of the ideal peak point.

Abstract: A corner cube reflector includes a two-dimensional arrangement of unit elements. The unit elements are arranged at a pitch of 200 ?m or less. As viewed in a direction from which incoming light is coming, each unit element has a peak point and a bottom point. A peak portion, including the peak point, has an excessive portion and/or a missing portion as compared with an ideal peak portion of an ideal corner cube. The level of the peak point is lower than that of the ideal peak point of the ideal corner cube. An average level difference h2 between the level of the bottom point and that of an ideal bottom point of the ideal corner cube is smaller than an average level difference h1 between the level of the peak point and that of the ideal peak point.

Abstract: A corner cube reflector includes a two-dimensional arrangement of unit elements. The unit elements are arranged at a pitch of 200 ?m or less. As viewed in a direction from which incoming light is coming, each unit element has a peak point and a bottom point. A peak portion, including the peak point, has an excessive portion and/or a missing portion as compared with an ideal peak portion of an ideal corner cube. The level of the peak point is lower than that of the ideal peak point of the ideal corner cube. An average level difference h2 between the level of the bottom point and that of an ideal bottom point of the ideal corner cube is smaller than an average level difference h1 between the level of the peak point and that of the ideal peak point.

Abstract: A method of making a micro corner cube array includes the steps of: providing a substrate, at least a surface portion of which consists of cubic single crystals and which has a surface that is substantially parallel to {111} planes of the crystals; and dry-etching the surface of the substrate anisotropically with an etching gas that is reactive with the substrate, thereby forming a plurality of unit elements of the micro corner cube array on the surface of the substrate. Each of the unit elements is made up of a number of crystal planes that have been etched at a lower etch rate than the {111} planes of the crystals.

Abstract: A method of making a micro corner cube array includes the steps of: providing a substrate, at least a surface portion of which consists of cubic single crystals and which has a surface that is substantially parallel to {111} planes of the crystals; and dry-etching the surface of the substrate anisotropically with an etching gas that is reactive with the substrate, thereby forming a plurality of unit elements of the micro corner cube array on the surface of the substrate. Each of the unit elements is made up of a number of crystal planes that have been etched at a lower etch rate than the {111} planes of the crystals.

Abstract: A method of making an array of corner cubes includes the steps of: preparing a substrate, at least a surface portion of which is made of a cubic crystalline material and which has a surface that is substantially parallel to {111} planes of the crystalline material; and patterning the surface of the substrate such that a plurality of solid shape elements defines a predetermined pattern on the surface of the substrate. Each of the solid shape elements is defined by a number of concave portions, a number of convex portions or a combination of concave and convex portions. The method further includes the step of supplying a first active species, including an element that is contained in the crystalline material, onto the substrate on which the solid shape elements have been formed.

Abstract: A corner cube reflector includes a two-dimensional arrangement of unit elements. The unit elements are arranged at a pitch of 200 ?m or less. As viewed in a direction from which incoming light is coming, each unit element has a peak point and a bottom point. A peak portion, including the peak point, has an excessive portion and/or a missing portion as compared with an ideal peak portion of an ideal corner cube. The level of the peak point is lower than that of the ideal peak point of the ideal corner cube. An average level difference h2 between the level of the bottom point and that of an ideal bottom point of the ideal corner cube is smaller than an average level difference h1 between the level of the peak point and that of the ideal peak point.

Abstract: A display device includes a light modulating medium layer, a corner cube array and a reflective electrode layer. The corner cube array is provided on one side of the light modulating medium layer and includes multiple corner cubes as its unit elements. The reflective electrode layer is provided on the corner cube array and includes multiple reflective electrodes that are spaced apart from each other and that are used to apply a voltage to the light modulating medium layer. When the display device is viewed from over the corner cube array, an arrangement pattern of the corner cubes matches an arrangement pattern of the reflective electrodes in at least one direction.

Abstract: A method of making an array of corner cubes includes the steps of: preparing a substrate, at least a surface portion of which is made of a cubic crystalline material and which has a surface that is substantially parallel to {111} planes of the crystalline material; and patterning the surface of the substrate such that a plurality of solid shape elements defines a predetermined pattern on the surface of the substrate. Each of the solid shape elements is defined by a number of concave portions, a number of convex portions or a combination of concave and convex portions. The method further includes the step of supplying a first active species, including an element that is contained in the crystalline material, onto the substrate on which the solid shape elements have been formed.

Abstract: A method of making a micro corner cube array includes the steps of: providing a substrate, at least a surface portion of which consists of cubic single crystals and which has a surface that is substantially parallel to {111} planes of the crystals; and dry-etching the surface of the substrate anisotropically with an etching gas that is reactive with the substrate, thereby forming a plurality of unit elements of the micro corner cube array on the surface of the substrate. Each of the unit elements is made up of a number of crystal planes that have been etched at a lower etch rate than the {111} planes of the crystals.

Abstract: A display device includes a light modulating medium layer, a corner cube array and a reflective electrode layer. The corner cube array is provided on one side of the light modulating medium layer and includes multiple corner cubes as its unit elements. The reflective electrode layer is provided on the corner cube array and includes multiple reflective electrodes that are spaced apart from each other and that are used to apply a voltage to the light modulating medium layer. When the display device is viewed from over the corner cube array, an arrangement pattern of the corner cubes matches an arrangement pattern of the reflective electrodes in at least one direction.

Abstract: A method of manufacturing artificial wood veneers comprises a step in which an artificial flitch formed of laminated material veneers respectively cut out of a certain kind of inexpensive natural wood is sliced in the direction of obtaining straight grain pattern to obtain a collected veneer in which mutual joining surfaces of the material veneers extend in parallel with each other and in the thickness direction, and a step in which many of the collected veneers thus obtained and material veneers cut out of another kind of natural wood are laminated, pressed and collected to form another artificial flitch which is sliced in a direction of obtaining a flat or flowered grain pattern which is very similar to that of a high grade natural wood.