F - Mech Eng,Light,Heat,Weapons – 21 – S
Patent
F - Mech Eng,Light,Heat,Weapons
21
S
F21S 8/00 (2006.01) F21S 8/02 (2006.01) F21S 3/02 (1995.01) F21V 7/14 (1995.01)
Patent
CA 2155982
The invention is intended to provide a pleasant, bright atmosphere by providing a luminaire used in an office which enhances a perception of brightness in the room, without providing glare, making the ceiling appear to be dark, imparting a feeling of oppression, or obstructing the field of view, while providing a desired illumination of the work surface and inducing a perception of brightness in the room. This is accomplished with a luminaire possessing one or more bright regions having a luminance (L) in a range of 3.3 log L -0.3 log w + 2.63 when seen from any position in the room in a range of perpendicular angles of 60 to 90 degrees, given that the luminance of the bright region of the luminous element of the luminaire is (L) [unit: cd/m2] and the apparent size of the bright region is solid angle (w) [unit: steradian (sr)].
Akashi Izumi
Akashi Yukio
Mukai Kenji
Tanabe Yoshinori
Akashi Izumi
Akashi Yukio
Borden Ladner Gervais Llp
Matsushita Electric Industrial Co. Ltd.
Mukai Kenji
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