Industry Patents
Patent: 7224107
Illumination Unit
(Click image for PDF of full patent)
| Patent Number: |
7224107 |
| Title: |
Illumination Unit |
| Abstract: |
An illumination unit has a light source, in particular a high-intensity
discharge lamp or an ultra high performance lamp, a main reflector and a
back reflector with an aperture opposite the main reflector. Light is
reflected from the light source through the aperture onto the main
reflector. The centers of the light source and the back reflector are
located or shaped relative to each other such that a first sector angle
(L2 L2') enclosed between the light source center and the edge of the
back reflector aperture is smaller than 180.degree.. The efficiency of
light emission is considerably increased. Preferred embodiments, each of
which can cause a further increase in light output, relate to various
shapes of the back reflector and the inner walls of the gas discharge
space, as well as to the shape of the part of the glass bulb that
surrounds the gas discharge space.
|
| Country of Issue: |
US |
| First Named Inventor: |
Moench, Ritz |
| Assignee: |
Philips |
| Continuation or Divisional of: |
|
| International Classification: |
H01J 5/16 |
| US Classification: |
313/114 |
| Issue Date: |
05-29-2007 |
| Filing Date: |
10-15-2002 |
| Application : |
10/492584 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7224107 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7224107 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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