Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Reflector
Patent
1991-07-02
1993-12-07
O'Shea, Sandra L.
Electric lamp and discharge devices
With optical device or special ray transmissive envelope
Reflector
313272, 313273, H01K 114, H01K 128
Patent
active
052686132
ABSTRACT:
An improved incandescent lamp is disclosed that is specially adapted for use in combination with a concave reflector in providing a high-intensity beam of light. The lamp includes a plurality of linear, helically-wound filaments arranged with their longitudinal axes parallel with each other and spaced substantially uniformly around the lamp's central longitudinal axis. Orienting such a lamp with its longitudinal axis aligned with the reflector's longitudinal axis, and with the filaments near the reflector's general focal point, ensures that a high proportion of the emitted light is collected by the reflector to project the high-intensity beam.
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Esakoff Gregory
O'Shea Sandra L.
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