Patent
1988-11-04
1990-06-05
Henry, Jon W.
350320, 350 9610, G02B 504, G02B 600
Patent
active
049308670
ABSTRACT:
When light rays (L.sub.1, L.sub.2) from any arbitrary directions arrive at the surface of incidence (3) at one end of a main body (2) made of a transparent glass or plastic, they are successively totally reflected internally by opposite reflecting surfaces (5a, 5b) of the main body (2) such that an angle formed between each light ray and the perpendicular to the reflecting surface gradually approaches to a critical angle .delta..sub.0 and the light rays are taken out of the main body through light emerging surfaces (5a, 5b, 4). The light rays taken out of the main body (2) through the light emerging surfaces are given greater components in directions parallal to the longitudinal direction of the main body (2) than the incident light rays (L.sub.1, L.sub.2). Therefore, light rays from all directions, incident to the surface of incidence (3), after being caused to pass through the main body (2), are given substantially equal directivities. Typically, the main body (2) is in the form of a wedge-shaped plate, a cone or a polyhedron. In practical use, a plurality of main bodies (2) are arranged in a parallel array to form a board-like assembly whose one surface is used as a light incidence surface.
REFERENCES:
patent: 2646637 (1953-07-01), Nievenberg et al.
patent: 3246133 (1966-04-01), Hensleigh
patent: 3535016 (1970-10-01), Malifaud
patent: 3603670 (1971-09-01), Kim
patent: 3603723 (1971-09-01), Tan
patent: 3613532 (1971-10-01), Wildhaber
patent: 3729626 (1973-04-01), Thurlow et al.
patent: 3963327 (1976-06-01), Poirer
patent: 4627690 (1986-12-01), Fantone
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