Light-emitting apparatus and illuminating apparatus

Details Light-emitting apparatus and illuminating apparatus Light-emitting apparatus and illuminating apparatus

2007-03-20

2007-03-20

Sember, Thomas M. (Department: 2875)

Illumination

Light source and modifier

Including reflector

C362S260000

Reexamination Certificate

active

11066624

ABSTRACT:
A light-emitting apparatus includes a light-emitting element, a base body, a reflection member and a fluorescent material layer. A cross section of the inner surface of the reflection member cut by a virtual plane including a virtual axis penetrating a center of the inner surface and perpendicular to the upper principal surface of the base body has a sectional profile defined by a curved line expressed by the following formula, and the inner surface of the reflection member is a curved surface obtained by rotating the curved line about the virtual axis: Z=(cr2)/[1+{1−(1+k)c2r2}1/2] (where −10≦k≦−0.001, 0.001≦c≦10). An angle θ1which is made by an upper surface of the fluorescent material layer and a line which connects one corner of a light-emitting portion of the light emitting element with an uppermost position of the inner surface and is tangent to the one corner, is given as θ1≧90°−sin−1(1
1).

REFERENCES:
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patent: 6710544 (2004-03-01), Schliep et al.
patent: 7112916 (2006-09-01), Goh et al.
patent: 2002/0105268 (2002-08-01), Schliep et al.
patent: 2005/0073849 (2005-04-01), Rhoads et al.
patent: 19638667 (1998-04-01), None
patent: 10105802 (2002-08-01), None
patent: 2000-349346 (2000-12-01), None

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