US3109049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interferometer
Assignee: CEPAC Inc
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Filing: 1960-05-19
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Granted: 1963-10-29
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Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Williams William Ewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:08
CPC Classifications
G; G01; G01B; G01B9/00; G01B9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
248 words
AN INTERFEROMETER INCLUDING A PLURALITY OF LIGHT REFLECTING ELEMENTS EACH DEFINED TO RECEIVE AN INCIDENT LIGHT BEAM ON ONE SURFACE THEREOF AND TO BACK REFLECT THE LIGHT BEAM WHEREBY IT EMERGES FROM SAID ONE SURFACE AT A POINT DISPLACED FROM THE POINT OF INCIDENCE, SAID PLURALITY OF LIGHT REFLECTING ELEMENTS ARE SPACED APART AND ARRANGED IN TWO PAIRS WHEREBY A LIGHT BEAM REFLECTED FROM ONE ELEMENT OF A PAIR IS RECEIVED BY THE OTHER ELEMENT OF THE SAME PAIR, A LIGHT DIVIDING ELEMENT ARRANGED INTERMEDIATE THE TWO PAIRS OF LIGHT REFLECTING ELEMENTS SAID LIGHT DIVIDING ELEMENT ENCLUDING A SURFACE DEFINED TO PARTIALLY TRANSMIT AND PARTIALLY REFLECT AN INCIDENT LIGHT BEAM, A TOTALLY REFLECTING SURFACE ARRANGED OPPOSITE ONE OF SAID LIGHT REFLECTING ELEMENTS OF EACH OF SAID PAIRS OF ELEMENTS, MEANS FOR DIRECTING A LIGHT BEAM TO IMPINGE ON SAID PARTIALLY REFLECTING SURFACE OF SAID LIGHT DIVIDING ELEMENT TO CAUSE THE TRANSMITTED PORTIONS AND THE REFLECTED PORTIONS OF SAID INCIDENT LIGHT BEAM TO EMERGE THEREFROM IN A SUBSTANTIALLY PERPENDICULAR RELATIONSHIP TO BE RECEIVED BY ONE OF SAID LIGHT REFLECTING ELEMENTS OF EACH PAIR, SAID TOTAL REFLECTING SURFACES ARE ARRANGED RELATIVE TO THE SAID OTHER REFLECTING ELEMENTS OF EACH PAIR FOR REFLECTING THE LIGHT BEAM BACK TO ITS PATH TO SAID OTHER ELEMENT TO RE-TRAVERSE A PATH FROM SAID OTHER ELEMENT TO SAID ONE ELEMENT OF EACH PAIR OF REFLECTING ELEMENTS FOR RECOMBINATION AT THE PARTIALLY REFLECTING SURFACE OF THE LIGHT DIVIDER, AND MEANS FOR RE-CEIVING THE RECOMBINED LIGHT BEAM.
Claim 2
Dependent Claim
248 words
AN INTERFEROMETER INCLUDING A PLURALITY OF LIGHT REFLECTING ELEMENTS EACH DEFINED TO RECEIVE AN INCIDENT LIGHT BEAM ON ONE SURFACE THEREOF AND TO BACK REFLECT THE LIGHT BEAM WHEREBY IT EMERGES FROM SAID ONE SURFACE AT A POINT DISPLACED FROM THE POINT OF INCIDENCE, SAID PLURALITY OF LIGHT REFLECTING ELEMENTS ARE SPACED APART AND ARRANGED IN TWO PAIRS WHEREBY A LIGHT BEAM REFLECTED FROM ONE ELEMENT OF A PAIR IS RECEIVED BY THE OTHER ELEMENT OF THE SAME PAIR, A LIGHT DIVIDING ELEMENT ARRANGED INTERMEDIATE THE TWO PAIRS OF LIGHT REFLECTING ELEMENTS SAID LIGHT DIVIDING ELEMENT ENCLUDING A SURFACE DEFINED TO PARTIALLY TRANSMIT AND PARTIALLY REFLECT AN INCIDENT LIGHT BEAM, A TOTALLY REFLECTING SURFACE ARRANGED OPPOSITE ONE OF SAID LIGHT REFLECTING ELEMENTS OF EACH OF SAID PAIRS OF ELEMENTS, MEANS FOR DIRECTING A LIGHT BEAM TO IMPINGE ON SAID PARTIALLY REFLECTING SURFACE OF SAID LIGHT DIVIDING ELEMENT TO CAUSE THE TRANSMITTED PORTIONS AND THE REFLECTED PORTIONS OF SAID INCIDENT LIGHT BEAM TO EMERGE THEREFROM IN A SUBSTANTIALLY PERPENDICULAR RELATIONSHIP TO BE RECEIVED BY ONE OF SAID LIGHT REFLECTING ELEMENTS OF EACH PAIR, SAID TOTAL REFLECTING SURFACES ARE ARRANGED RELATIVE TO THE SAID OTHER REFLECTING ELEMENTS OF EACH PAIR FOR REFLECTING THE LIGHT BEAM BACK TO ITS PATH TO SAID OTHER ELEMENT TO RE-TRAVERSE A PATH FROM SAID OTHER ELEMENT TO SAID ONE ELEMENT OF EACH PAIR OF REFLECTING ELEMENTS FOR RECOMBINATION AT THE PARTIALLY REFLECTING SURFACE OF THE LIGHT DIVIDER, AND MEANS FOR RE-CEIVING THE RECOMBINED LIGHT BEAM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |