Abstract
Moiré is an appealing visual effect observable when two or more repetitive patterns are superposed. Fabrication of moiré effects has already proven to be useful in a range of applications, from art to engineering. Here, we introduce a method for designing and fabricating level-line moirés on curved surfaces. These moiré shapes are obtained by superposing a partly absorbing layer and a layer formed by an array of cylindrical lenses or by two layers of cylindrical lenses. We formulate the problem of placing an array of cylindrical lenses on a curved surface as a design problem with a small number of dimensions. The range of possible solutions can therefore be explored by a human observer. We demonstrate the quality of our method by rendered simulations and by fabrication. The resulting static displays can be manufactured using different fabrication techniques, from multi-material 3D printing to molding.
Highlights
Moiré is an intriguing phenomenon observable when spatial patterns are superposed [1]
We introduce curved surface moiré and explore different aspects of its design and fabrication
We explore the space between the offset surfaces Q and the focal surface R using a bi-linear interpolation in order to find the base surface S with the most visible moiré effect
Summary
Moiré is an intriguing phenomenon observable when spatial patterns are superposed [1]. It has broad implications in a range of scientific disciplines, from optical interferometry [2] to atomic lattice interaction [3]. Thanks to Moiré theory [1], one can create and fabricate fascinating visual effects. We foresee a great potential in extending moiré applications to a wide range of real-life, non-planar objects thanks to recent advances in 3D fabrication techniques. We introduce curved surface moiré and explore different aspects of its design and fabrication. We simulate compelling moiré effects and fabricate them primarily using multi-material 3D printing. For a special single-material type of moiré, coined dual-lens moiré [4, 5], we use additional fabrication techniques, such as molding, hinting at the potential of our method for mass manufacturing
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