title: Producing illumination-independent additively mixed colors by diffractive optics.
abstract: We apply transmission gratings under Littrow incidence to produce polychromatic colors by additive color mixing. Parametric optimization of gratings is employed to produce high efficiency. In addition, we show that the system can yield the same color from a wide variety of spectra; i.e., the system can produce metameric colors.
authors.affiliation: InFotonics Center, University of Joensuu, Finland. noora.tossavainen@joensuu.fi
authors.forename: Noora
authors.initials: N
authors.lastname: Tossavainen
authors.forename: Markku
authors.initials: M
authors.lastname: Kuittinen
authors.forename: Tuomas
authors.initials: T
authors.lastname: Vallius