Figure 2

Design of the DOE in variants 1–4. (a) The design of the DOE when illuminated by scattered light (the left column) and the point source (the columns on the right). (b) The scheme of the partition of the DOE into elementary areas G_ij. (c) The location map of two nonintersecting areas G⁽¹⁾ and G⁽²⁾ in the area of optical element G. (d) The location map of three nonintersecting areas G⁽¹⁾, G⁽²⁾, and G⁽³⁾ in the area of optical element G. (e) The location map of four nonintersecting areas G⁽¹⁾, G⁽²⁾, G⁽³⁾, and G⁽⁴⁾ in the area of optical element G. (f) The location map of subareas \({\text{G}}_{{{\text{ij}}}}^{\prime }\) in elementary areas G_ij. (g) Complementary colour image seen at diffraction angles greater than 60°. (h) Plots of the function h⁽ⁱ⁾(x, y) for variants 1–3.