| 摘要 |
<p>A lamp reflector (11) has a reflective surface (14) which is part ellipsoidal (region 15) and part spherical (regions 16, 16'). The part spherical regions distribute light from a transversely mounted arc lamp (12) into zones which would otherwise be masked by the end portions (P, P') of, and or end mountings for, the transversely mounted lamp (12). In the case of a reflector for use in conjunction with a double-ended discharge lamp there are two spherical regions arranged to either side of a plane through the longitudinal axis X of the reflector.</p> |
