Light pipe and light guiding device with same

Details Light pipe and light guiding device with same Light pipe and light guiding device with same

2011-08-30

2011-08-30

Ward, John A (Department: 2885)

Illumination

Light fiber, rod, or pipe

Illuminating or display apparatus

C362S551000, C362S555000, C385S116000, C385S901000

Reexamination Certificate

active

08007157

ABSTRACT:
An exemplary light pipe includes a main pipe and branch pipes. The main pipe includes a light inputting segment, an end portion, and a light outputting segment between the light inputting segment and the end portion. The light inputting segment includes connecting openings defined therein. A distance between each connecting opening and the end portion of the main pipe is different from a distance between each other connecting opening and the end portion of the main pipe. The branch pipes connect with the light inputting segment at the respective connecting openings.

REFERENCES:
patent: 3532873 (1970-10-01), Batson et al.
patent: 4924612 (1990-05-01), Kopelman
patent: 5857041 (1999-01-01), Riser et al.
patent: 6880276 (2005-04-01), Strein et al.
patent: 7866851 (2011-01-01), Chang

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