EP 0453932 A3 19920408 - LENS ARRANGEMENT FOR SIGNAL LAMP, FREE OF IMAGE PHANTOMS
Title (en)
LENS ARRANGEMENT FOR SIGNAL LAMP, FREE OF IMAGE PHANTOMS
Publication
Application
Priority
AT 93290 A 19900423
Abstract (en)
[origin: EP0453932A2] The invention describes a signal arrangement (1) having a lens arrangement (2) free of ghost images. The lens arrangement consists of a plurality of plano-convex lenses (19 to 21) arranged distributed over an exit surface thereof. The convex curved surfaces (22 to 24) of these lenses face the reflector (8), which emits a parallel light beam (16) and is assigned to a light source (3). The planar surfaces (25 to 27) of these lenses, which are aligned approximately perpendicular to the parallel light beam (16) face a viewer (29). Arranged distributed over the exit surface or exit plane of the lens arrangement (2) is a multiplicity of planar surfaces (25 to 27) of which each is respectively assigned a plano-convex lens (19 to 21, 37). The total area of the planar surfaces (25 to 27) is between 3% and 20%, preferably 7%, of a cross-sectional area of the parallel light beam (16) projected by the reflector (8) onto the curved surfaces (22 to 24). Each planar surface (25 to 27) has an areal dimension of between 7 mm<2> and 0.02 mm<2>, preferably 0.3 mm<2>. <IMAGE>
IPC 1-7
IPC 8 full level
F21S 8/00 (2006.01)
CPC (source: EP US)
F21V 5/04 (2013.01 - EP US); F21W 2111/02 (2013.01 - EP)
Citation (search report)
- [X] EP 0180145 A1 19860507 - SIGNAL VISION SA [FR]
- [A] US 3487206 A 19691230 - DAWSON JOHN R, et al
- [A] EP 0142955 A1 19850529 - LUCAS IND PLC [GB]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 91106077 A 19910417