Patent ID: 9719649
Date: 2017-08-01
CPC Classifications: F21S,G02B

Claim:
1. A headlight lens for a vehicle headlight, the headlight lens including a body of transparent material, the body comprising: a light passage section having at least one optically effective light exit face, and a light tunnel having at least one light entry face, wherein the light tunnel, via a bend, transits into the light passage section configured for imaging the bend as a bright-dark-boundary via light irradiated into the light entry face, wherein the surface restricting the light tunnel upwardly incorporates an indentation, wherein the light tunnel, between the light entry face and the indentation, comprises a region on its upwardly restricting surface which essentially corresponds to part of the surface of an ellipsoid, and wherein the indentation includes a flank which is part of the region corresponding to the surface of an ellipsoid.