| 摘要 |
<p>A reflector lamp having a lens of vitreous material secured to a reflector body of vitreous material. An inner reflector surface of the reflector body includes a reflective coating having a first coating portion extending from the rim of the reflector body and a second coating portion extending from a location spaced from the rim towards a basal portion of the reflector body. The second coating portion is a layer of silver and the first coating portion is a layer of material other than silver, such as aluminum. Higher efficacies are achieved with the silver layer spaced from the rim than with silver covering the entire reflector surface.</p> |
