公开(公告)号：EP0673488A4

公开(公告)日：1996-06-05

申请号：EP94901297

申请日：1993-11-04

申请人： CUNNINGHAM DAVID W ,  ESAKOFF GREGORY F

发明人： CUNNINGHAM DAVID W ,  ESAKOFF GREGORY F

IPC分类号： F21S8/00 ,  F21V7/09 ,  F21V9/04 ,  F21V11/18 ,  F21V17/16 ,  F21V19/02 ,  F21V29/00 ,  F21V7/00

CPC分类号： F21V29/83 ,  F21V7/09 ,  F21V9/04 ,  F21V11/18 ,  F21V17/164 ,  F21V19/02 ,  F21V29/004 ,  F21V29/86 ,  F21W2131/406

摘要： An improved lighting fixture is disclosed for imaging a high-intensity beam of light at a distant location. A specially-faceted (39) near-elliptical reflector (15) cooperates with a gate aperture (31) and a single aspheric lens to produce a beam that incorporates a very high proportion of emitted visible light, while the reflector has a dichroic coating that reflects only a low proportion of infrared light. The projected beam thereby has a relatively low energy density, such that the front portion (27) of the fixture can be reduced substantially in size and weight. The gate is selectively rotatable relative to the fixture's rear housing (17).