US3302027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interferometric method and apparatus for modulation and control of light
Assignee: North American Aviation Corp
•
Filing: 1963-07-12
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Granted: 1967-01-31
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Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 David L Fried
- 👤 Wendell S Read
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:19
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AN OPTICAL MODULATION SYSTEM COMPRISING: A SOURCE OF SUBSTANTIALLY MONOCHROMATIC LIGHT, A FIRST LENS FOR FOCUSING LIGHT FROM SAID SOURCE, A BEAM-SPLITTER FOR SPLITTING LIGHT FROM SAID FIRST LENS INTO TWO FOCUSED BEAM PORTIONS, A PAIR OF MIRRORS EACH POSITIONED TO INTERCEPT A RESPECTIVE ONE OF SAID BEAM PORTIONS AT THE FOCUS THEREOF, A SOURCE OF MODULATION SIGNAL, MEANS RESPONSIVE TO SAID MODULATION SIGNAL FOR EFFECTING MUTUALLY OPPOSITE SENSE OSCILLATOR MOTION OF SAID MIRRORS ALONG THE PATHS OF SAID BEAM PORTIONS, A SECOND LENS FOR COLLIMATING THE MODULATED LIGHT BEAM FORMED BY THE RECOMBINATION OF SAID FOCUSED BEAM PORTIONS AT SAID BEAM-SPLITTER AND MEANS FOR CONTINUOUSLY CAUSING THE OSCILLATORY MOTION OF SAID MIRRORS TO OPERATE ABOUT A SELECTED PORTION OF THE CURVE RELATING INTERFERENCE WITH RELATIVE PATH LENGTHS SO THAT MAXIMUM LINEARITY IS OBTAINED IN THE RELATION BETWEEN LIGHT AMPLITUDE AND AMPLITUDE OF THE MODULATION SIGNAL.
Claim 2
Dependent Claim
146 words
AN OPTICAL MODULATION SYSTEM COMPRISING: A SOURCE OF SUBSTANTIALLY MONOCHROMATIC LIGHT, A FIRST LENS FOR FOCUSING LIGHT FROM SAID SOURCE, A BEAM-SPLITTER FOR SPLITTING LIGHT FROM SAID FIRST LENS INTO TWO FOCUSED BEAM PORTIONS, A PAIR OF MIRRORS EACH POSITIONED TO INTERCEPT A RESPECTIVE ONE OF SAID BEAM PORTIONS AT THE FOCUS THEREOF, A SOURCE OF MODULATION SIGNAL, MEANS RESPONSIVE TO SAID MODULATION SIGNAL FOR EFFECTING MUTUALLY OPPOSITE SENSE OSCILLATOR MOTION OF SAID MIRRORS ALONG THE PATHS OF SAID BEAM PORTIONS, A SECOND LENS FOR COLLIMATING THE MODULATED LIGHT BEAM FORMED BY THE RECOMBINATION OF SAID FOCUSED BEAM PORTIONS AT SAID BEAM-SPLITTER AND MEANS FOR CONTINUOUSLY CAUSING THE OSCILLATORY MOTION OF SAID MIRRORS TO OPERATE ABOUT A SELECTED PORTION OF THE CURVE RELATING INTERFERENCE WITH RELATIVE PATH LENGTHS SO THAT MAXIMUM LINEARITY IS OBTAINED IN THE RELATION BETWEEN LIGHT AMPLITUDE AND AMPLITUDE OF THE MODULATION SIGNAL.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |