Patent EP0086186A1 successfully refreshed from Google Patents.
US3164665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical light shutter
Assignee: Raytheon Co
•
Filing: 1962-07-30
•
Granted: 1965-01-05
•
Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 Phyllis E Stello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:10
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/21; G02F1/03; G02F1/213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
AN OPTICAL APPARATUS FOR CONTROLLING THE PASSAGE OF LIGHT WITHIN A DISCRETE RANGE OF WAVELENGTHS OF THE LIGHT SPECTRUM, SAID APPARATUS COMPRISING: (A) A SPACER LAYER OF MATERIAL HAVING CRYSTALLITE ORIENTATION AND OF A UNIFORM THICKNESS, SAID THICKNESS BEING AN INTEGRAL NUMBER OF NO LESS THAN 100 ONEHALF PREDETERMINED WAVELENGTHS WITHIN SAID DISCRETE RANGE OF WAVELENGTHS; (B) MEANS RESPONSIVE TO AN ELECTRICAL SIGNAL FOR PRODUCING A UNIFORM CONTROLLABLE POTENTIAL GRADIENT ACROSS SAID SPACER LAYER; (C) A PLURALITY OF LAYERS EACH ONE-QUARTER OF SAID PREDETERMINED WAVELENGHTS THICK AND OF A FIRST INDEX OF REFRACTION DISPOSED ON BOTH SIDES OF SAID SPACER LAYER; AND (D) A LAYER ONE-QUARTER OF SAID PREDETERMINED WAVELENGTH THICK AND OF A SECOND INDEX OF REFRACTION DISPOSED INTERMEDIATE EACH ADJACENT PAIR OF SAID PLURALITY OF LAYERS OF SAID FIRST INDEX OF REFRACTION ON BOTH SIDES OF SAID SPACER LAYER AND INTERMEDIATE SAID SPACER LAYER AND THE IMMEDIATELY ADJACENT LAYERS OF SAID FIRST INDEX OF REFRACTION, SAID SECOND INDEX OF REFRACTION BEING DIFFERENT FROM SAID FIRST INDEX OF REFRACTION.
Claim 2
Dependent Claim
170 words
AN OPTICAL APPARATUS FOR CONTROLLING THE PASSAGE OF LIGHT WITHIN A DISCRETE RANGE OF WAVELENGTHS OF THE LIGHT SPECTRUM, SAID APPARATUS COMPRISING: (A) A SPACER LAYER OF MATERIAL HAVING CRYSTALLITE ORIENTATION AND OF A UNIFORM THICKNESS, SAID THICKNESS BEING AN INTEGRAL NUMBER OF NO LESS THAN 100 ONEHALF PREDETERMINED WAVELENGTHS WITHIN SAID DISCRETE RANGE OF WAVELENGTHS; (B) MEANS RESPONSIVE TO AN ELECTRICAL SIGNAL FOR PRODUCING A UNIFORM CONTROLLABLE POTENTIAL GRADIENT ACROSS SAID SPACER LAYER; (C) A PLURALITY OF LAYERS EACH ONE-QUARTER OF SAID PREDETERMINED WAVELENGHTS THICK AND OF A FIRST INDEX OF REFRACTION DISPOSED ON BOTH SIDES OF SAID SPACER LAYER; AND (D) A LAYER ONE-QUARTER OF SAID PREDETERMINED WAVELENGTH THICK AND OF A SECOND INDEX OF REFRACTION DISPOSED INTERMEDIATE EACH ADJACENT PAIR OF SAID PLURALITY OF LAYERS OF SAID FIRST INDEX OF REFRACTION ON BOTH SIDES OF SAID SPACER LAYER AND INTERMEDIATE SAID SPACER LAYER AND THE IMMEDIATELY ADJACENT LAYERS OF SAID FIRST INDEX OF REFRACTION, SAID SECOND INDEX OF REFRACTION BEING DIFFERENT FROM SAID FIRST INDEX OF REFRACTION.
References Cited (Backward Citations)
US2960914A
Cited
US3025763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-05 | 1968-07-06 | 1969-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-05 | 1972-07-06 | 1973-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-05 | 1976-07-06 | 1977-01-05 | $7700.00 | Window Closed / Lapsed |