Optical waveguides – Miscellaneous
Reexamination Certificate
2007-12-11
2007-12-11
Font, Frank G. (Department: 2883)
Optical waveguides
Miscellaneous
C385S146000
Reexamination Certificate
active
11227999
ABSTRACT:
A bar-shaped light guide is provided to allow its emitting surface to be exposed from a white casing and is provided with a pattern for scattering and reflecting the light on a bottom surface opposite to the emitting surface. This pattern is formed by a white paint or minute irregularities. Further, an end face of the bar-shaped light guide opposite to the incident side is made cube-corner shaped. In other words, the end face is made chevroned by mirror-finished flat surfaces. These flat surfaces are tilted at such an angle that an incident angle θ of the rays of light traveling through the bar-shaped light guide parallel to the longitudinal direction of the bar-shaped light guide is smaller than a critical angle.
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Ikeda Makoto
Nemoto Hiroyuki
Saito Tomihisa
Blackman William D.
Carrier Joseph P.
Carrier, Blackman & Assoc. P.C.
Font Frank G.
Nippon Sheet Glass Co. Ltd.
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