Appeal No. 1997-0689
Application No. 08/047,238
enter by Examiner's Amendment upon resolution of the appeal to
place claim 31 in condition for allowance.
The appellant's invention relates to a window system
which uses diffraction gratings and spectrally selective
coatings to control entry of heat and light into a room.
Claim 1 is illustrative of the claimed invention, and it reads
as follows:
1. A transmissively controllable energy efficient window
system for controlling radiation entering an interior space,
comprising:
a) a fixed diffraction grating windowpane (10) capable
of deflecting the infra-red spectral component of an input
radiation beam by a certain range of angles;
b) a movable diffraction grating windowpane (14)
capable of deflecting the infra-red spectral component of an
input radiation beam by a certain range of angles, and
selectively juxtaposable in or out of optical series with said
fixed diffraction grating windowpane (10) so as to either
permit at least some of said infra-red spectral components of
the beam deflected from said fixed windowpane to enter the
interior space or to deflect the beam further so as to prevent
said infra-red spectral components from entering the interior
space; and
(c) a window frame for holding said fixed diffraction
grating windowpane and said movable diffraction grating
windowpane in adjacent parallel planes.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
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