Lens for side emitting LED device

Details Lens for side emitting LED device Lens for side emitting LED device

2007-12-11

2007-12-11

Ward, John Anthony (Department: 2885)

Illumination

Light modifier

Refractor

C362S308000, C362S340000

Reexamination Certificate

active

11304949

ABSTRACT:
A light emitting device includes an LED package bases, an LED chip disposed on the LED package base, and a lens disposed on the LED package base. The lens includes a frustum shape having an inclined outer peripheral surface, and having a relatively smaller lower portion for attaching onto the LED package base, and having a relatively greater upper portion spaced away from the LED package base, the lens includes a longitudinal axis arranged to have an included angle θ formed between the longitudinal axis and the inclined outer peripheral surface of the lens, for reflecting light sidewise. The lens may include a curved recess formed in the upper portion for such as light diffusing purposes.

REFERENCES:
patent: 4698730 (1987-10-01), Sakai et al.
patent: 6547423 (2003-04-01), Marshall et al.
patent: 6679621 (2004-01-01), West et al.
patent: 7172319 (2007-02-01), Holder et al.
patent: 7181378 (2007-02-01), Benitez et al.

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