ELECTRIC REFLECTOR LAMP

摘要

Electric reflector lamps having an ellipselike curved reflector and a hyperbola-like curved IR reflector having a higher efficiency if not only the foci of both reflectors coincide and the light source is arranged on the coinciding foci present within the space enclosed by the reflectors, but the relationship ah = f x c2/ae also applies, where f is a factor dependent on the eccentricity of the ellipse.