Illumination – Revolving
Patent
1997-04-03
1999-01-12
Cariaso, Alan
Illumination
Revolving
362 31, 362268, 385 47, F21V 800
Patent
active
058577610
ABSTRACT:
An illumination device comprises a light source like a halogen lamp, a light guide, a round rod-shaped transparent radiation member having a proximal end and a distal end, and a transparent radiation plate. The light guide is a plastic optical fiber comprising a single core of silicon rubber and a cladding layer of tetrafluoroethylene/hexafluoropropylene copolymer. The radiation member is a transparent circular cylinder made of acrylic resin, and has a predetermined pattern of light scattering regions on its surface oppose the directions where the light is radiated. The radiation plate is placed such a position that one side plane of the radiation plate oppose to he radiation member, and also has a predetermined pattern of light scattering regions on the back. The light scattering regions are provided along said radiation member in such a way that a ratio of an tea of one region to that of adjacent region becomes larger as the one region becomes distant from the proximal and of the radiation member.
REFERENCES:
patent: 3535018 (1970-10-01), Vasilatos
patent: 4422719 (1983-12-01), Orcutt
patent: 4585298 (1986-04-01), Mori
patent: 4822123 (1989-04-01), Mori
patent: 4936663 (1990-06-01), Mori
patent: 5074632 (1991-12-01), Potter
patent: 5530780 (1996-06-01), Ohsawa
patent: 5695269 (1997-12-01), Lippmann et al.
Abe Tomiya
Hayakawa Yoshikazu
Hirano Kouki
Matsumoto Masanori
Nakahigashi Fumitaka
Cariaso Alan
Hitachi Cable Ltd.
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