Light-transmitting pipe

Details Light-transmitting pipe Light-transmitting pipe

1995-04-03

1996-05-07

Gromada, Denise L.

Illumination

Revolving

362 26, 116202, F21V 704

Patent

active

055152449

ABSTRACT:
A light pipe for a personal computer transmits light from a lamp to an indicator window formed in the computer housing. The pipe is formed of a block of light-transmitting plastic material and includes a plurality of sections oriented perpendicular to one another. Light rays are reflected from each section to the next off an inclined light reflecting surface. One of the sections is of square cross section, and the next section is of non-square cross section. The light reflecting surface disposed at a junction between those two sections is of stepped configuration to form a series of sub-faces, each of which is inclined at a 45 degree angle relative to oncoming light rays for reflecting light across the entire cross section of the non-square section.

REFERENCES:
patent: 4215647 (1980-08-01), Fukasawa
patent: 4257084 (1981-03-01), Reynolds
patent: 4716501 (1987-12-01), McKee et al.
patent: 4918577 (1990-04-01), Furudate
patent: 5268823 (1993-12-01), Yergenson
patent: 5390085 (1995-02-01), Mari-Roca et al.

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