Electric lamp and discharge devices – Electrode and shield structures – Filament or resistance heated electrodes
Patent
1986-04-14
1987-08-11
Chatmon, Saxfield
Electric lamp and discharge devices
Electrode and shield structures
Filament or resistance heated electrodes
313113, 313341, 313315, 315 71, 445 48, H01J 116, H01J 1910, H01K 114
Patent
active
046864121
ABSTRACT:
This invention provides for an improved reflector-type lamp having reduced focus loss and exhibiting an increase in reflector collection efficiency. Stray light from the lamp's light source is reduced and channeled into the central angular region of the reflector where it can be more easily controlled and increase the in candle power of the lamp. A shorter, more compact filament design, wound with larger mandrel ratios, is positioned within the reflector to evenly disperse the light energy throughout the central angular region.
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patent: 3942063 (1976-03-01), Winter et al.
patent: 4208609 (1980-06-01), Berlec
patent: 4316116 (1982-02-01), Graves et al.
patent: 4461973 (1984-07-01), Kaufman et al.
patent: 4480212 (1984-10-01), Monaham et al.
patent: 4499401 (1985-02-01), Graves et al.
patent: 4547704 (1985-10-01), Brinn et al.
Chatmon Saxfield
GTE Products Corporation
Jimenez Jose W.
Romanow Joseph S.
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