Patent ID: 8722195

Claim:
A composite glass pane comprising: an upper pane; a lower pane; and an intermediate layer between the upper pane and the lower pane, wherein the intermediate layer comprises at least one luminescent pigment and one polyvinyl butyral (PVB) film, wherein the PVB film has a light transmission of greater than 70% when measured at a wavelength of 405 nm, wherein the luminescent pigment comprises an alkyl hydroxyterephthalate having a formula: R 1 —COO—P(OH)x(1-4)-COO—R 2 , wherein R 1 , R 2 is an alkyl or allyl residue having 1 to 10 C atoms, P is a phenyl ring, OH is a hydroxyl group bonded to the phenyl ring, and x is a number of hydroxyl groups bonded to the phenyl ring.