Patent ID: 6731433
Filing Date: 2004-05-04
Classification: F21V,F21W,G08G

Abstract:
A device for generating light signals comprising:(a) a housing having an interior and at least one opening, (b) at least one plate having an absorption that is electrically controllable and closing the at least one opening, and (c) a diffuser element for reflecting incident light through the plate and located in the interior of the housing behind the at least one opening, wherein the housing has three round openings arranged one above another and each of which is, respectively, closed by a plate, so that it is possible for each plate to be switched electronically between the switched states of colored transparent and black, and the absorption spectrum of the uppermost plate permits only transmission of red light, the middle plate permitting only the transmission of red and green light and the lower plate permitting only the transmission of green light.