| 摘要 |
An optical projector device in which light is collected from substantially 4 pi steradians by means of two reflector systems. One system comprises a tapering reflector, and the other system can include planar tapered, spherical, ellipsoidal, or cylindrical reflector elements which reflect light from the remaining solid angle towards the entrance window of the first system. The tapering reflector may have the general shape of a truncated cone, prism, or pyramid.
|
