Industry Patents
Patent: 6249092
Dimmable Lighting Apparatus Using a Discharge Lamp
(Click image for PDF of full patent)
| Patent Number: |
6249092 |
| Title: |
Dimmable Lighting Apparatus Using a Discharge Lamp |
| Abstract: |
A lighting apparatus capable of dimming lighting units using a discharge
lamp in various ways. Each lighting unit includes a metal halide lamp and
two spaced shutters arranged in front of the lamp on the optical path of
the lamp. A shutter driver selectively opens or closes the shutters for
mechanically dimming light issuing from the lamp. Six lighting units are
cascaded in a single group. Ballast boxes each are assigned to a
particular lighting unit and include a power supply section for feeding
electric power to the lamp and a shutter controller for controlling a
shutter driver. These structural elements are collectively controlled from
a keyboard via a single control box. A command generating section included
in the control box transforms a command input on the keyboard to a command
for controlling the individual lighting unit. A selector also included in
the control box distributes the command to five groups of lighting units.
The apparatus allows the power supply and dimming of the individual
lighting unit to be controlled via the keyboard.
|
| Country of Issue: |
US |
| First Named Inventor: |
Kanatani |
| Assignee: |
Coburn Japan Corporation |
| Continuation or Divisional of: |
|
| International Classification: |
F21P 3/00 |
| US Classification: |
315/316 |
| Issue Date: |
06-19-2001 |
| Filing Date: |
09-30-1999 |
| Application : |
09/409987 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6249092 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6249092 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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