Lighting mechanism for e.g. gas-discharge lamp of motor vehicle, has axial stop elements arranged in optical-axis direction, where light width between distal ends of elements is smaller than diameter of lamp holder held by reflector neck

摘要

The mechanism (10) has a reflector (12) provided for bundling light sent by a light source i.e. lamp such as gas-discharge lamp. An opening is provided for receiving a part i.e. lamp holder, of the light source. A reflector neck (20) surrounding the opening is formed at back of the reflector. Two axial stop elements are arranged at an inner circumference of the reflector neck and movably arranged in a direction of the optical-axis, where light width between distal ends of the stop elements is smaller than diameter of the part of the light source held by the reflector neck.