Optical: systems and elements – Diffraction – From grating
Patent
1993-04-13
2000-07-25
Spyrou, Cassandra
Optical: systems and elements
Diffraction
From grating
359566, 359572, 49125, 521713, G02B 518, E05D 1526, E06B 700
Patent
active
060943068
ABSTRACT:
An energy saving window system operates selectively in different seasons and climatic conditions to optimize transfer of the sun's radiation through the window into an interior space. Two sets of diffraction gratings are deployed, with two mode settings--a summer or capture mode and a winter or transmittance mode. In the summer mode, transfer of heat into the interior is undesirable. Unwanted heat rays are redirected to a scupper by additive diffraction through two diffraction gratings in series. The scupper redirects the undesired radiation to a heat sink or back out through the window. In the winter mode, transfer of heat into the interior is desirable. By repositioning the two diffraction gratings so that their deflections are subtractive, the sun's rays are redirected to be essentially undiffracted so as to miss the scupper and enter the room. The essentially undiffracted light rays are acceptable as a view and are effectively unblocked as to solar heat gain. Various coatings may be added to the diffraction gratings to increase the window selectivity of light and heat transmissivity. Various feedback control systems may be deployed as sunfollower subsystems to control motorized mechanisms so as to automatically move the diffraction grating windowpanes to maintain an azimuth and direction appropriate for heat gain control of the sun's rays. Mechanisms may also be added to control heat transfer from the scuppers to the outside atmosphere, to a heat sink or to some utilization apparatus.
REFERENCES:
patent: Re32539 (1987-11-01), Jentoft et al.
patent: Re32915 (1989-05-01), Jentoft et al.
patent: Re33720 (1991-10-01), Cummings
patent: 2280358 (1942-04-01), Tietig
patent: 3236290 (1966-02-01), Lueder
patent: 3482107 (1969-12-01), Hock
patent: 4290473 (1981-09-01), Pierson
patent: 4368725 (1983-01-01), McClintock
patent: 4389085 (1983-06-01), Mori
patent: 4411493 (1983-10-01), Miller
patent: 4429952 (1984-02-01), Dominguez
patent: 4522467 (1985-06-01), Bartenbach
patent: 4600627 (1986-07-01), Honda et al.
patent: 4710426 (1987-12-01), Stephens
patent: 4733505 (1988-03-01), Van Dame
patent: 4765724 (1988-08-01), Huichun
patent: 4813198 (1989-03-01), Johnston et al.
patent: 4850682 (1989-07-01), Gerritsen
patent: 4963206 (1990-10-01), Schacklette et al.
patent: 5009484 (1991-04-01), Gerritsen
patent: 5027566 (1991-07-01), Gilowski
patent: 5048925 (1991-09-01), Gerritsen et al.
patent: 5062247 (1991-11-01), Dittmer
patent: 5071232 (1991-12-01), Kato et al.
patent: 5148643 (1992-09-01), Sampson et al.
patent: 5163257 (1992-11-01), Crowell
patent: 5164856 (1992-11-01), Zhang et al.
patent: 5179630 (1993-01-01), Chang et al.
patent: 5179992 (1993-01-01), Okarski et al.
Anvik Corporation
Jr. John Juba
Kling Carl C.
Spyrou Cassandra
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