| 摘要 |
<p>The electric reflector lamp according to the invention has a blown glass lamp envelope (41), of which a concave internally mirror-coated wall portion (44), a translucent wall portion (49) and a tubular wall portion (50) constitute a single blow moulding. Within the lamp envelope is arranged a metal reflector body (45), which has a concave spherically curved reflecting surface facing the mirror-coated wall portion (44). Its axis (43') and its centre of curvature (46') coincide with the axis (43) and the focus (46), respectively, of the mirror-coated wall portion. A light source (51) surrounds the focus (46). The lamp does not or substantially does not, emit stray light and concentrates the generated light very effectively.</p> |
