An object of the present invention is to provide a thermal transfer recording sheet that enables images having a wide color gamut, a high chroma, and good lightfastness, in which the degree of catalytic fading is reduced, to be formed. The thermal transfer recording sheet includes a base material and a colorant layer on the base material. The colorant layer includes a yellow dye layer, a magenta dye layer, and a cyan dye layer. The dye layers each include, as a dye, a compound having a specific structure.

An optical system that includes a cholesteric glassy liquid crystal film doped with a dye and configured to preferentially absorb light of a first handedness, such as left-hand circularly polarized (LCP) light, but pass light of the opposite handedness, such a right-hand circularly polarized (RCP) light. Adding an anti-reflection coating can further increase the transmission-to-reflection ratio.