Method of making a multi-layer optical isolation
Abstract
Abstract An optical reflector structure, with broad band rejection characteristics, for isolating a particular band of wavelengths of interest. The optical reflector comprises a stack of flat substrates, each one of which has a coating, which is reflective at the bandwidth of interest, disposed along at least one of its faces. The optical reflector structure is interposed into a beam of light with the planes of the coatings at a predetermined angle to the beam of light. In one embodiment the predetermined angle is 45*. The bandwidth of interest is reflected by a first set of the coatings to another set of coatings while the remaining light is absorbed by the substrates or opaque coatings on the substrates in one embodiment or by a coating of light-absorbing material disposed behind the reflective coating relative to the incident light in another embodiment.
Inventors
- 👤 P Heinrich
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |