Light illumination device

Details Light illumination device Light illumination device

2006-10-30

2010-06-01

Jackson, Jr., Jerome (Department: 2815)

Active solid-state devices (e.g., transistors, solid-state diode

Incoherent light emitter structure

With housing or contact structure

C257S095000, C257SE33058

Reexamination Certificate

active

07728346

ABSTRACT:
An LED illumination device can include a bridge connection circuit that includes five LED chips. The LED chips can be installed such that four LED chips, through which half-wave rectified current flows, are disposed in a generally cross-shaped opposed arrangement with the remaining LED chip interposed therebetween. The remaining LED chip can also have a full-wave rectified current flowing therethrough. Half-wave rectified currents having phases shifted by 180° (half the period) can flow through respective LED chips installed at a generally right angle. The placement range for the five LED chips can be limited, and the LED chips can be sealed with a wavelength conversion material.

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patent: 2004/0203312 (2004-10-01), Bortscheller et al.
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patent: 2007/0080438 (2007-04-01), Yamanaka et al.
patent: 2008/0266893 (2008-10-01), Speier
patent: U S58-158458 (1983-10-01), None
patent: H05-002942 (1993-01-01), None

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