| 摘要 |
Photochromic articles that include a substrate, a primer layer that includes a first photochromic compound, and a photochromic - dichroic layer over the primer layer that includes a photochromic - dichroic compound. The first photochromic compound and the photochromic - dichroic compound each are selected such that the photochromic - dichroic compound has an unactivated state terminal minimum absorbance wavelength that is less than or equal to the unactivated state terminal minimum absorbance of the underlying first photochromic compound. The photochromic articles further include a topcoat layer over the photochromic - dichroic layer. The topcoat layer can include a second photochromic compound that has an unactivated state terminal minimum absorbance wavelength that is less than the unactivated state terminal minimum absorbance wavelength of the underlying photochromic - dichroic compound. The photochromic articles provide, for example, a combination of linear polarizing properties, and reduced percent transmittance of ultraviolet light and/or visible light when in an activated state, such as when exposed to sufficient actinic light. |
