A method for constructing a lamp for radiating a warning signal within a desired polar angular range around a mean polar direction includes the steps of fixing a base body at a mounting location, arranging each of an annular support element having an annular reflector, an inner and an outer annular optical...http://www.google.fr/patents/US8177597?utm_source=gb-gplus-shareBrevet US8177597 - Method for constructing a lamp for radiating a warning signal
Method for constructing a lamp for radiating a warning signal
