| 摘要 |
<p>Disclosed is an optical arrangement (10) comprising a reflector (20) having a reflective elliptical surface (22) delimiting a central aperture (23), said reflective elliptical surface having a first focal point (24) and a second focal point (26) on an optical axis (12) extending through said central aperture; and a mirror (30) on said optical axis for redirecting light generated in said first focal point and reflected by said elliptical reflector towards said mirror through said central aperture. A lighting device (100) including such an optical arrangement and a luminaire including such a lighting device are also disclosed.</p> |
