as well as special effect compositions. A colorant may include, for example, a finely divided solid powder that is insoluble but wettable under the conditions of use. A colorant can be organic or inorganic and can be
[0041] Figure 10 is a flow chart schematically illustrating the assembly steps for assembling the optical element according to the present invention; [0042] Figure 1 1 A is a top plan view of a Gaussian apodized aperture and an associated curve of light transmittance across the aperture; [...