Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2006-03-28
2006-03-28
Tran, Minh-Loan (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S099000, C257S100000, C313S492000, C313S502000, C362S507000, C362S516000
Reexamination Certificate
active
07019334
ABSTRACT:
Whereas incandescent light bulbs and other similar light sources known in the prior art emit light in all directions, LED lamps emit light in a single direction only, and this is manifested in the problem of being unable to achieve light distribution characteristics satisfied by conventional headlamp designs. The present invention realizes an LED lamp for a light source of a headlamp disposing an LED chip2in the vicinity of the focus of a projection means and providing a shielding member7covering a portion of the LED chip2in a formation allowing a light distribution characteristic suitable for a vehicle front-illumination light to be obtained when light from the LED chip2is magnified and projected in an illumination direction by a projection lens10or the like constituting the projection means; accordingly, accurate light distribution characteristics can be obtained in a simple manner by projecting in the illumination direction using the projection lens10.
REFERENCES:
patent: 6038387 (2000-03-01), Machida
patent: 6441943 (2002-08-01), Roberts et al.
patent: 6565247 (2003-05-01), Thominet
patent: 6639360 (2003-10-01), Roberts et al.
patent: 2003/0230757 (2003-12-01), Suehiro et al.
Ebisutani Takashi
Futami Takashi
Koike Teruo
Kushimoto Takuya
Ohno Masafumi
Cermak & Kenealy LLP
Stanley Electric Co. Ltd.
Tran Minh-Loan
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