H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/85
H01J 5/16 (2006.01) H01J 61/40 (2006.01) H01K 1/30 (2006.01) H01K 1/32 (2006.01) H01K 7/02 (2006.01)
Patent
CA 1095575
LD-7203 ABSTRACT OF THE DISCLOSURE A blown glass reflector lamp having an ellipsoidal reflector and a clear or lightly frosted face is disclosed. The lamp bulb is blown in the shape of half of an ellipsoid, the eccentricity of the ellipsoid being within the range of 0.88 to 0.66, inclusive, The face of the bulb closing the ellipsoid can be clear or, preferably, lightly frosted. An elongated neck is provided to separate the base from the filament to enable the base to remain cooler during lamp operation. The length of the neck can be reduced if a heat- reflecting shield is inserted within the neck around the mount. The reflective layer terminates at approximately the minor diameter of the ellipsoid, so that the direct light and the reflected light diverge at approximately the same angle. The face of the lamp is positioned close to the minor diameter, so that the light flux passing through is not sufficiently concentrated to cause high face luminance or overheat the glass.
282804
Company General Electric
Eckersley Raymond A.
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