A laminated glass capable of producing an observable pattern when edge-illuminated contains two sheets of glass adhered by an adhesive film of at least one film B containing a polyvinyl acetal PB and at least one plasticizer WB; and at least one film A or an area thereof containing a polyvinyl acetal PA and optionally at least one plasticizer WA, wherein the refractive indices of film A and film B differ by at least 0.0002.