Pseudo-luminous panel, substrate therefor, and display element a

Details Pseudo-luminous panel, substrate therefor, and display element a Pseudo-luminous panel, substrate therefor, and display element a

1992-11-04

1994-11-08

Sikes, William L.

Optical: systems and elements

Signal reflector

Discrete reflecting elements formed as a unitary mass

359599, 359619, 359621, 359627, 359885, 40582, 40605, G02B 5136, G02B 528, G02B 502, G09F 1316

Patent

active

053632370

ABSTRACT:
A pseudo-luminous panel has a substrate and a thin film optical color filter formed all over the main surface of the substrate with or without a reflecting film interposed therebetween. The main surface of the substrate is formed by obliquely downward and upward band-like surfaces alternately arranged side by side in a vertical direction. The downward band-like surfaces of the substrate, or downward band-like surfaces of the reflecting film formed on the downward band-like surfaces of the substrate are each a smooth reflecting surface. The upward band-like surfaces of the substrate, or the upward band-like surfaces of the reflecting film formed on the upward band-like surfaces of the substrate, are each a smooth, irregular or uneven reflecting surface. Obliquely downward band-like surfaces of the color filter are each a smooth surface extending straight in the longitudinal section of the panel, and obliquely upward band-like surfaces of the color filter are each a rough surface. With the pseudo-luminous panel of such a structure, it is possible to prevent that a pattern on the panel is too dazzling in the daytime and too dark at night to recognize in a predetermined hue when the panel is set up outdoors high above the ground.

REFERENCES:
patent: 1791936 (1931-02-01), Rolph
patent: 1858975 (1932-05-01), Ta'bois
patent: 3260156 (1966-07-01), Komitor
patent: 3540282 (1970-11-01), Koet al.
patent: 4040760 (1977-08-01), Wyckoff
patent: 4756603 (1988-07-01), Ohtani

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