Light pipe insulation techniques

Details Light pipe insulation techniques Light pipe insulation techniques

2007-11-13

2007-11-13

Gushi, Ross (Department: 2833)

Illumination

Light fiber, rod, or pipe

Light emitting diode

Reexamination Certificate

active

11237025

ABSTRACT:
A circuit board module has a circuit board, a first light emitting diode (LED) mounted to the circuit board, a second LED mounted to the circuit board, and a light pipe assembly disposed adjacent the first and second LEDs. The light pipe assembly is configured to convey light from the first and second LEDs to a viewing area (e.g., a front panel, a faceplate, etc.). The light pipe assembly includes a first light pipe associated with the first LED, a second light pipe associated with the second LED, and an opaque sleeve configured to fit around at least a portion of the first light pipe and inhibit light conveyed through the second light pipe from bleeding into the first light pipe. Such a sleeve is further configurable to prevent each light pipe from inadvertently capturing light from the wrong LED.

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patent: 6719447 (2004-04-01), Woodward et al.
patent: 6969186 (2005-11-01), Sonderegger et al.
patent: 7044623 (2006-05-01), Olsson et al.
patent: 2004/0174716 (2004-09-01), Verdes et al.

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