Lamp apparatus with reflective ceramic sleeve holding a plasma t

Details Lamp apparatus with reflective ceramic sleeve holding a plasma t Lamp apparatus with reflective ceramic sleeve holding a plasma t

1996-12-20

1999-09-07

O'Shea, Sandra

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313634, 313631, 313234, 313491, 313492, 313493, 313110, 313 17, H01J 516, H01J 6140, H01J 1716, H01J 6130

Patent

active

059491809

ABSTRACT:
A lamp apparatus for producing a beam of light that can be used as a part of a source for a projection system. The lamp apparatus of the present invention produces a beam of light originating from a small aperture. The apparatus includes an electrodeless lamp body in the form of elongated outer tube having a hollow interior. An inner sleeve fits or is deposited inside the outer tube, the inner sleeve having a fill containing generally cylindrically or spherical shaped bore. The sleeve provides temperature resistant and reflection properties. Electrodes positioned either internally or externally of the lamp body are provided for producing radio frequency energy that excite the fill contained in the bore of the inner sleeve to form a plasma light source of intense heat. The light thus generated by the plasma in a relatively large volume is constrained to exit through a small aperture at either one, or both, ends of the apparatus.

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patent: 5093601 (1992-03-01), Watanabe et al.
patent: 5148085 (1992-09-01), Kroes
patent: 5153482 (1992-10-01), Keijser

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