Appeal No. 2004-1069 Page 5
Application No. 09/569,616
upper one of said surfaces and have portions of the radiation output windows
protruding above the upper one of said surfaces.
Tai's invention relates generally to lighting systems and, in particular, to a system
for converting light output from a point-like light source into a linear or planar light
beam that can be collimated in one or more dimensions to a predetermined degree.
Figure 1 is a simplified perspective view of a light expanding system according to one
embodiment of Tai's invention. Figure 4 is a simplified perspective view of a light
expanding system according to another embodiment of Tai's invention. Figure 5A is a
perspective view of a prismatic diffuser for use with a light expanding system according
to Tai's invention. Figure 6 is a simplified perspective view of a light expanding system
according to another embodiment of Tai's invention. Figure 7 is a simplified perspective
view of a light expanding system according to yet another embodiment of Tai's
invention. Figure 8A is a simplified perspective view of the light expanding system of
Figure 7 used with two point-like light sources. Figure 8D is a simplified perspective
view of a light expanding system according to another embodiment of Tai's invention
using two point-like light sources.
The light expanding system 10 shown in Figure 1 includes a beam collector 28
and a beam expanding light pipe 14 to convert divergent light from a point-like light
source 2 into a linear light beam. Divergent light is emitted by the light source 2. The
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