A light transmitting plastics shield 1 is provided with distance pieces 5 for attachment to the lens 2 of the headlamp. Each distance piece comprises a male part 6 and a female part 7. The male part is ultrasonically welded to the shield and comprises a cylindrical head 12 supported between spaced walls 10, 11. Female part 7 comprises a disc-shaped base 14 carrying a socket portion 16. The base is secured to the lens by an adhesive foam pad 15. The heads 12 are received within the socket portions 16 and are mounted with their axes parallel to allow the shield to be pivoted away from the lens for cleaning. The heads are also capable of axial movement within the sockets to allow for thermal expansion of the shield.
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