HIGH ENTRANCE ANGLE RETROREFLECTIVE ARTICLE WITH SPHERICAL REFRACTING ELEMENTS
摘要
Retroreflective article (80) that provides effective retroreflective brightness at very high entrance angles as well as low entrance angles and under wet conditions. The article comprises spherical refracting elements (60) having an index of refraction above 1.35 and below 1.75 adhered to the cover (66) film of an enclosed-lens retroreflective base sheet.
申请公布号
CA2222565(A1)
申请公布日期
1997.01.16
申请号
CA19962222565
申请日期
1996.06.27
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
JACOBS, GREGORY F.;SCHUELER, DAVID G.;BELISLE, LOUIS C. (DECEASED);BAILEY, TERRY R.;HAUNSCHILD, DALE H.;STUMP, LARRY K.