公开(公告)号：US5224770A

公开(公告)日：1993-07-06

申请号：US803179

申请日：1991-12-05

申请人： Adrian Simmons ,  Alberto de la Cruz Garcia ,  Roberto Casalone

发明人： Adrian Simmons ,  Alberto de la Cruz Garcia ,  Roberto Casalone

IPC分类号： F21S4/00 ,  F21S2/00 ,  F21S8/02 ,  F21S8/04 ,  F21V5/02 ,  F21V7/00 ,  F21V7/22 ,  F21V13/12 ,  G02B5/02 ,  G02F1/1335 ,  G02F1/13357 ,  G09F9/00 ,  G09F13/04 ,  G09F13/14

CPC分类号： F21V7/00 ,  G02F1/133605 ,  G09F13/0409 ,  G09F13/14 ,  G02F1/133604 ,  G09F2013/0422 ,  G09F2013/145

摘要： The light box is provided with a case having arranged therein a reflector directed to the front wall to be illuminated from the rear. The reflector surf ace has a concave curvature. An elongated light source is arranged in the center of the case. The reflector, in the central area thereof, is covered by an optical film having a structured surface directed to the light source. This structure consists of immediately adjacent V-shaped grooves, being parallel to each other and running transverse to the extension of the light source. By total reflection on the structured surface of the transparent optical film as well as by reflection on the reflector surface of the reflector, the light of the light source incident on the reflector is reflected in the direction of the back-lit front side of the light box. This arrangement provides for improved and more-uniform light distribution.

公开(公告)号：US5195818A

公开(公告)日：1993-03-23

申请号：US803017

申请日：1991-12-05

申请人： Adrian Simmons ,  Alberto de la Cruz Garcia

发明人： Adrian Simmons ,  Alberto de la Cruz Garcia

IPC分类号： F21S8/00 ,  F21V5/02 ,  F21V7/00 ,  F21V13/04 ,  F21V13/10 ,  F21V17/04 ,  G09F13/04 ,  G09F13/14

CPC分类号： G09F13/14 ,  F21S8/00 ,  F21V13/04 ,  F21V13/10 ,  F21V17/04 ,  F21V5/02 ,  F21V7/00 ,  G09F13/0409 ,  F21Y2103/00 ,  G09F2013/0422 ,  G09F2013/145

摘要： The lamp has a case with a light exit opening. A reflector is arranged on the rear wall of the case facing the light exit opening, in front of which an elongated light source is arranged. Between the light source and the light exit opening there is a flexible optical film, stable in shape, with a smooth surface and a structured surface. The smooth surface faces the light exit opening, while the structured surface is directed toward the light source. The structure consists of a plurality of V-shaped grooves extending in parallel to each other and transverse to the longitudinal extension of the light source, the grooves lying immediately side by side. The optical film extends only in that area in which the light source emits light directly toward the light exit opening.