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US 7,246,922 B2Granted
Lamp nose cone
AssigneeHewlett-Packard Development Company, L.P.
InventorsKevin Hulick, Anurag Gupta
Life of this patent
Estimating the term…
Abstract
A nose cone for a projector lamp having a lamp burner and a reflector, includes a metal shell, having a rear edge configured to attach to a forward edge of the reflector, and configured to cooperate with the reflector to substantially enclose the lamp burner. The metal shell includes means for dissipating heat therefrom.
Claims26
A nose cone for a projector lamp having a lamp burner and a reflector, comprising:
- a metal shell, disposed at a forward edge of the reflector, having a forward aperture configured to allow passage of light from the lamp, the metal shell being configured to cooperate with the reflector to substantially enclose the lamp burner, the metal shell having an interior surface that is treated to be infrared absorbing and low emitting, and an exterior surface that is treated to be highly radiation emitting;
- and
- a plurality of protrusions extending from the exterior surface of the shell, and a plurality of protrusions extending from the interior surface of the shell, for dissipating heat therefrom.
A light source for a projection system, comprising:
- a lamp, including a lamp burner and a reflector;
- and
- a nose cone, attached to a forward portion of the reflector, the nose cone including
- a metal shell, attached to a forward edge of the reflector, having a forward aperture configured to allow passage of light from the lamp, the metal shell having an interior surface that is treated to be infrared absorbing and low emitting, and an exterior surface that is treated to be highly radiation emitting, and being configured to cooperate with the reflector to substantially enclose the lamp burner;
- and
- a plurality of protrusions extending from the exterior surface of the shell, and a plurality of protrusions extending from the interior surface of the shell, for dissipating heat therefrom.
3 more elements
A method for cooling a projector light source, comprising the steps of:
- substantially enclosing a projector lamp having a lamp burner and reflector with a nose cone attached to a forward portion of the reflector, the nose cone including a plurality of protrusions extending from an interior surface thereof and from an exterior surface thereof, for dissipating heat therefrom;
- treating the interior surface of the nose cone to be infrared absorbing and low emitting;
- treating the exterior surface of the nose cone to be highly radiation emitting;
- and
- providing a device to cause air to pass over the protrusions of the nose cone to dissipate heat therefrom.
2 more elements
A projection system, comprising:
- a light source, including a lamp, having
- a lamp burner and reflector;
- a nose cone, attached to a forward portion of the reflector, the nose cone comprising
- a metal shell, having a rear edge configured to attach to a forward edge of the reflector, and a forward aperture configured to allow passage of light from the lamp, the metal shell being configured to cooperate with the reflector to substantially enclose the lamp burner, and having an interior surface that is treated to be infrared absorbing and low emitting, and an exterior surface that is treated to be highly radiation emitting;
- and
- a plurality of protrusions on the interior surface and exterior
- surface of the metal shell, for dissipating heat from the nose cone;
- a spatial light modulator, configured to produce an image to be projected by the light;
- and
- means for projecting the image to a viewing position.
7 more elements
Dependencies are inferred from the claim text.