Photography using spatial filtering
Abstract
Abstract THERE IS PROVIDED BY THIS INVENTION A SPATIAL FILTER WHICH HAS THE PROPERTY THAT WHEN IT IS PLACED ADJACENT TO A SENSITIZED MATERIAL, SUCH AS PANCHROMATIC FILM OF THE TYPES USED IN BLACK AND WHITE PHOTOGRAPHY OR THEROMOPLASTIC MATERIAL, THAT THE DIFFERENT COLORS OF LIGHT PASSING THROUGH THAT FILTER ONTO THE SENSITIZED MATERIAL ARE ENCODED. THEREAFTER, WHEN THE DEVELOPED TRANSPARENCY, WHICH IS MADE FROM THE SENSITIZED MATERIAL HAS LIGHT PROJECTED THERETHROUGH, THIS LIGHT MAY BE FOCUSED AT A FOCAL PLANE AT WHICH THERE IS PRESENTED THREE DIFFRACTED IMAGES RESPECTIVELY DISPOSED ABOUT A CENTRAL OR REAL IMAGE. BY USING A MASK WITH THE PROPER COLORED GELATINS THEREIN, THE THREE DIFFRACTED IMAGES ONLY MAY BE PERMITTED TO PASS THERETHROUGH AND THEN SUPERIMPOSED TO FORM A COLORED IMAGE OF THE ORIGINAL SCENE OR OBJECT WHICH WAS PHOTOGRAPHED ON THE SENSITIZED SURFACE IN COMBINATION WITH THE SPATIAL FILTER.
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Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |