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Diffractive device for generating one or more diffracting images including a surface relief structure at least partly arranged in a series of tracks
Diffractive device for generating one or more diffracting images including a surface relief structure at least partly arranged in a series of tracks
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机译:用于产生一个或多个衍射图像的衍射装置,包括至少部分地布置在一系列轨道中的表面起伏结构
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摘要
A diffractive device having a surface relief structure which, when illuminated by a light source, generates one or more diffraction images which are observable from particular ranges of viewing angles around the device, wherein at least part of the surface relief structure (1) is arranged in a series of tracks (2), each track (4, 5) having a diffracting surface (3) which generates a component of a diffraction image, such that at least one of the diffraction images generated by the diffractive device is formed from image components generated by a plurality of the tracks.
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