发明名称 |
A LUMINAIRE DRIVE CIRCUIT |
摘要 |
A display case luminaire (30) comprises a linear housing, array (32) of LED light sources, and lens (33), wherein the lens provides a substantially uniform spread of light across a target plane even if the luminaire is located to emit light generally at an acute angle to the plane. The lens (33) is a Fresnel lens and has non-uniform optical characteristics in cross-section, with at least two different focal lengths. The linear housing comprises a visor (36) and a reflective surface (35) externally of the lens and a reflective surface (35) between the lens and the light source. A display case luminaire as claimed in any preceding claim, wherein the housing is configured for mounting back-to-back with another similar luminaire to provide a field of emission in the range of 150° to 180°. The housing is generally quadrant-shaped in cross-section, and the lens may be tilted with respect to the light source. |
申请公布号 |
EP2074868(A2) |
申请公布日期 |
2009.07.01 |
申请号 |
EP20070827115 |
申请日期 |
2007.10.18 |
申请人 |
NUALIGHT LIMITED |
发明人 |
KELLY, WILLIAM;BOUCHIER, JOHN;WALSHE, MARK;O'BRIEN, DESMOND JOHN |
分类号 |
F21S2/00;A47F3/00;A47F11/10;F21S4/00;F21V5/04;F21V7/00;F21V9/08;F21V21/02;F21V21/088;H05B33/08 |
主分类号 |
F21S2/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|