Converging element and illuminating device

Details Converging element and illuminating device Converging element and illuminating device

2006-03-07

2009-10-06

O'Shea, Sandra L (Department: 2875)

Illumination

Light source and modifier

Plural serial lens elements or components

C362S084000, C362S298000, C362S299000, C362S300000

Reexamination Certificate

active

07597459

ABSTRACT:
An LED light source is formed of an LED and an angle control lens. The angle control lens includes a transparent member in a shape of a rotational symmetry, and includes a center convex curved surface area (light-emission area) A1,a peripheral curved surface area (light-emission area) B1,a peripheral curved surface reflection area C1,a center concave curved surface area (light-incidence area) D, and a convex curved surface area E formed between the areas A1,B1.The convex curved surface area E is formed in a position for receiving direct incoming light from the LED (direct incoming light deviated from the center portion), and is optically constructed to anteriorly emit this received light (in a direction intended to be emitted as a result of a light-emission angle being controlled).

REFERENCES:
patent: 6499863 (2002-12-01), Dewald
patent: 2004/0207999 (2004-10-01), Suehiro et al.
patent: 2006/0279710 (2006-12-01), Tani
patent: 61-147585 (1986-07-01), None
patent: 2002-189263 (2002-07-01), None

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