Transparent vehicle headlamp lens includes block of material with micro-deterioration points causing diffraction in chosen pattern

摘要

The transparent component for a vehicle headlamp comprises a block of material (1) which allows visible light to pass through. It is defined by external faces (11,12), one of which may be flat whilst the other is convex. Within the body of the material there are points (14) causing diffraction of the light. These points lie inside the material and at a distance from the external faces. The diffraction points are formed by micro-deterioration points within the overall body of material, and these are produced by laser bombardment. The pattern of the diffraction points is established in order to achieve specific optical properties for the component. An Independent claim is also included for the method for manufacturing the vehicle headlamp lens.