Patent ID: 8523413
Filing Date: 2013-09-03
Classification: F21S,F21V,F21Y

Abstract:
1. A LED collimator for a vehicle headlight, which emits light from at least one light source, wherein the at least one light source comprises at least one LED, wherein a part of the light is directly radiated in a radiation angular range of the LED collimator, wherein the LED collimator is configured to deflect the light which is not radiated in the radiation angular range of the LED collimator into the radiation angular range, wherein the LED collimator is asymmetrically structured at least regarding a collimator cutting plane in such a way that a non-uniform brightness distribution is achieved in a radiation plane of the LED collimator, wherein the radiation plane is defined orthogonally with respect to the collimator cutting plane and with respect to a main direction of radiation of the LED collimator element, wherein at least one wavelength-dependent filter is arranged in at least a portion of the radiation plane, wherein the non-uniform brightness distribution is arranged to form a high intensity light inside a first edge of the LED collimator and substantially no light intensity is formed at the outside of the first edge creating a bright-dark cut-off, wherein at least one scattering filter is arranged along a first edge of the LED collimator so that a portion of light reaches the region above the bright-dark cut-off.