Device for projecting complementary pure colors caused by multiple interference in spectral range of visible light with generation of color effects on projection scree, has point-shaped light source and light reflecting body

摘要

The projecting device (41) has a point-shaped light source (44) and a light reflecting body (48) comprising a semi-transparent reflection layer (485) with different layer thickness. The film thickness variance follows a fine structure, and the mean layer thickness is less than the wavelength of visible light. The light reflecting body is arranged such that the light beams (471) emitted by the light source are reflected by the boundary surfaces of the reflection layer.