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US 2003/0193806 A1Published application
Lamp with ceramic light shield
AssigneeOsram Sylvania Inc.
InventorMerle E. Morris
Life of this patent
Estimating the term…
Abstract
A ceramic cup may be fitted in the neck of a reflector region to provide good reflection or blockage of the light incident on the reflector neck. Light is then prevented light from incorrectly exiting through the lamp neck or from heating the neck region. The ceramic cup can be cheaper than coatings or other shields. The ceramic cup shield can be more durable and electrically more compatible with the lead structure extending through the neck region. The cup shield can also help align and properly position the light source.
Claims10
A reflector lamp comprising:
- a) a light transmissive shell having a shell cavity with an interior surface extending from a reflector region that defines a reflector cavity to a neck region that defines a neck cavity;
- b) a light source positioned in the shell cavity and offset from the interior surface and electrically connected by a first lead and a second lead extending respectively through the neck cavity region to an exterior of the shell;
- and
- c) an opaque ceramic shield positioned in the neck cavity intermediate the light source and the neck region having a first surface facing the light source and a second surface facing the neck region.
1 more element
A reflector lamp comprising:
- a) a light transmissive shell having a shell cavity with an interior surface extending from a reflector region that defines a reflector cavity to a neck region that defines a neck cavity, the reflector region being coated to reflect light to a field to be illuminated;
- b) a light source positioned in the shell cavity and offset from the interior surface and electrically connected by a first lead and a second lead extending respectively through the neck cavity region to an exterior of the shell;
- c) an opaque, electrically insulating, ceramic shield positioned in the neck cavity intermediate the light source and the neck region having a first surface facing the light source and a second surface facing the neck region, shield being cup shaped defining a cup cavity and a portion of the light source is located in the cup cavity and
- an eyelet extending through the reflector and light shield, and one of the leads extends through the eyelet.
1 more element
Dependencies are inferred from the claim text.