Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874476

Siminovitch, Michael J ^[1]; Page, Erik R ^[2]

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1. Pinole, CA
2. Berkeley, CA

A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) or other lamps arranged vertically, i.e. one lamp above the other, with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum ensures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. In a particular configuration, the reflective septum is bowl shaped, with the upper CFL sitting in the bowl, and a luminous shade hanging down from the bowl. The lower CFL provides both task lighting and uniform shade luminance. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. However, other types of lamps, including incandescent, halogen, and LEDs can also be used in the fixture. The lighting system may be designed for the home, hospitality, office or other environments.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• Assignee: The Regents of the University of California (Oakland, CA)
• Patent Number(s): US 6398384
• OSTI ID: 874476
• Country of Publication: United States
• Language: English

Related Subjects

lamp
dynamically
controlled
lighting
distribution
uniformly
illuminated
luminous
shade
double
floor
pair
compact
fluorescent
lamps
cfls
arranged
vertically
reflective
septum
selectively
produced
control
light
intensity
cfl
ensures
directed
pattern
selected
easily
changed
user
configuration
bowl
shaped
upper
sitting
hanging
provides
task
uniform
luminance
planar
circular
oriented
horizontally
preferable
provide
energy
efficiency
types
including
incandescent
halogen
leds
fixture
designed
home
hospitality
office
environments
fluorescent lamp
compact fluorescent
/362/D26/