Light emitting diode illuminating device

Illumination – Plural light sources – With modifier

Reexamination Certificate

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C362S617000, C362S618000

Reexamination Certificate

active

07837350

ABSTRACT:
A light emitting diode (LED) illumination device (10) includes an LED (11), a frustum-shaped light guide member (12) and a light diffusing plate (13). The frustum-shaped light guide member (12) has a light input surface (120) and a light output surface (122) opposite to the light input surface (120). The light guide member (12) tapers from the light output surface (122) to the light input surface (120). The light input surface (120) is optically coupled to the LED (11), and the light diffusing plate (13) is optically coupled to the light output surface (122) of the light guide member (12).

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Joseph Bielecki et al., “Thermal Considerations for LED Components In An Automotive Lamp”, 23rd IEEE Semiconductor Thermal Measurement and Management Symposium, Mar. 2007, pp. 37-43, vol. 18, Issue 22, IEEE.

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