Luminaire with counter-reflector and refractor

Details Luminaire with counter-reflector and refractor Luminaire with counter-reflector and refractor

2007-02-20

2007-02-20

Luebke, Renee (Department: 2875)

Illumination

Plural light sources

With modifier

C362S296040, C362S298000, C362S301000, C362S345000

Reexamination Certificate

active

10497432

ABSTRACT:
A luminaire (1) comprising a concave reflector (2) enclosing a hollow space (3) and defining with an outer edge (4) a light emission window (5). The luminaire can accommodate at least two lamps (6, 7). The luminaire further comprises an optically semi-permeable wall (8) positioned in between the two lamps and dividing the hollow space into chambers (9, 10), and a counter-reflector (11) provided opposite the reflector. Light originating from the lamps can only leave the luminaire through the light emission window after passing through the semi-permeable wall. It is thus possible to obtain homogeneously mixed light as well as to obtain light of equal intensity from the various chambers, also when only one lamp is operating or the two lamps operate at different intensities.

REFERENCES:
patent: 2556690 (1951-06-01), Guth
patent: 4755916 (1988-07-01), Collins
patent: 6250772 (2001-06-01), Entrop et al.
patent: 6641293 (2003-11-01), Kumar et al.
patent: 6913372 (2005-07-01), Allcock et al.

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