Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining & MfgfiledCriticalMinnesota Mining & Mfg
Priority to CH445574ApriorityCriticalpatent/CH576359A5/de
Publication of CH576359A5publicationCriticalpatent/CH576359A5/de
G02B5/126—Reflex reflectors including curved refracting surface
G02B5/128—Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
B—PERFORMING OPERATIONS; TRANSPORTING
B44—DECORATIVE ARTS
B44F—SPECIAL DESIGNS OR PICTURES
B44F1/00—Designs or pictures characterised by special or unusual light effects
B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
B44F1/04—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces after passage through surface layers, e.g. pictures with mirrors on the back