| 摘要 |
An electric lamp, wherein either first or second light source means is to be selectively mounted in a lighting chamber defined by a lamp body and a lens, the first light source means including an incandescent bulb and a reflector for producing parallel rays of light, the second light source means including a plurality of light sources such as LEDs each producing divergent rays of light. In order to make the lens compatible with both light source means, this lens is formed to include a set of steps for each light source of the second light source means. Each set of steps include at least one functioning primarily for diverging light rays emitted from central part of one associated light source of the second light source means, ones functioning primarily for somewhat converging light rays emitted from peripheral part of one associated light source of the second light source means, and ones functioning primarily for diverging the parallel light rays from the first light source means. |
