High efficiency signal light, in particular for a motor vehicle

Claim 1

A motor vehicle signal light, of the type comprising a light source and deflector means for causing the rays emitted by the source to propagate in a direction which is essentially parallel to a given general emission direction, the deflector means comprising a first lens which is generally arcuate and disposed around and close to the source, and a second lens which is generally in the form of a plate disposed in front of the source and in front of the first lens and which extends transversely to a generally horizontal emission direction, said second lens having substantially greater width than the first lens at least in a horizontal direction, wherein the first lens comprises first arcuately oriented horizontally disposed deflector elements for causing the light rays it receives from the source to be deflected substantially vertically towards said second lens, and the second lens includes second deflector elements for deflecting the light rays it receives from the first lens substantially horizontally to a direction which is substantially parallel to said general emission direction, and wherein the first lens also includes third deflector elements forming light flux distributors at least in the horizontal direction, for converting the uniform angular distribution of the light received from the source into a substantially uniform linear distribution of the light impinging on the second lens along the horizontal direction thereof, whereby the light flux received per unit surface of said second lens is substantially constant in said horizontal direction.