Optical elements
Abstract
Abstract METHOD OF FORMING A LIGHTWEIGHT OPTICAL STRUCTURE SUCH AS A MIRROR OR WINDOW MADE UP OF AN OPTICAL PLATE OF QUARTZ FUSED TO A PERFORATED SUPPORT PLATE OR QUARTZ OR FUSED SILICA BY PLACING THE OPTICAL PLATE ON THE PERFORATED SUPPORT PLATE IN SUCH POSITION THAT THE REAR SURFACE OF THE OPTICAL PLATE COVERS THE PERFORATION OPENING, AND DIRECTING A HIGH INTENSITY, HIGH TEMPRATURE SOURCE OF RADIANT HEAT ONTO THE OPTICAL SURFACE OF THE OPTICAL PLATE WHEREBY TO PREFERENTIALLY HEAT THE AREAS OF CONTACT BETWEEN THE OPTICAL PLATE AND THE WALLS OF THE PERFORATED SUPPORT TO SELECTIVELY FUSE SUCH AREAS AND TO CAUSE A PORTION OF THE REAR FACE OFTHE OPTICAL PLATE TO DEFORM AND CONVEXEDLY DEPEND INTO THE PERFORATIONS OF THE SUPPORT PLATE. THE RESULTING OPTICAL STRUCTURE IS ALSO DESCRIBED.
Inventors
- 👤 H Mohn
Bibliographic Details
Claims Analysis
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |