Patent US3369192A successfully refreshed from Google Patents.
US3369192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser configuration
Assignee: American Optical Corp
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Filing: 1962-07-27
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Granted: 1968-02-13
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Charles J Koester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0602; H01S3/0617; H01S3/09; H01S3/091; H01S3/0915; H01S3/092; H01S3/093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A BODY FORMED OF LASER MATERIAL, SAID BODY HAVING SIDE WALLS DISPOSED IN CONCENTRIC RELATION TO A LONGITUDINAL AXIS EXTENDING THERETHROUGH, A PAIR OF CONVEXLY CURVED SPHERICAL SURFACES DEFINING OPPOSITE ENDS OF SAID BODY, SAID CONVEXLY CURVED END SURFACES BEING ARRANGED IN FACING RELATION ON EACH OTHER AND IN PREDETERMINED SPACED RELATION ALONG THE AXIS OF SAID BODY, THE CENTER OF CURVATURE OF EACH CONVEXLY CURVED END SURFACE BEING LOCATED AT THE INTERSECTION OF SAID AXIS WITH THE OTHER OF SAID CONVEXLY CURVED END SURFACES, ONE OF SAID CONVEXLY CURVED END SURFACES BEING OF RELATIVELY HIGH REFLECTIVITY OVER ALL PARTS THEREOF AND THE OTHER END SURFACE BEING OF RELATIVELY LOW REFLECTIVITY OVER ALL PARTS THEREOF EXCEPT FOR A RELATIVELY SMALL AREA IMMEDIATELY SURROUNDING AND DISPOSED IN CONCENTRIC RELATION WITH SAID AXIS, AND SAID RELATIVELY SMALL SURFACE AREA HAVING A RELATIVELY HIGH REFLECTIVITY, AT LEAST ONE OF SAID END SURFACE AREAS OF HIGH REFLECTIVITY BEING SLIGHTLY TRANSMISSIVE TO OPTICAL ENERGY AT THE EMISSION WAVELENGTH OF SAID LASER MATERIAL, WHEREBY AN OPTICAL RESONANT CAVITY FOR LOWER ORDER MODE PROPAGATION ONLY AND AT INCREASED EFFICIENCY WILL BE FORMED BETWEEN SAID AREAS OF RELATIVELY HIGH REFLECTIVITY.
Claim 2
Dependent Claim
192 words
A BODY FORMED OF LASER MATERIAL, SAID BODY HAVING SIDE WALLS DISPOSED IN CONCENTRIC RELATION TO A LONGITUDINAL AXIS EXTENDING THERETHROUGH, A PAIR OF CONVEXLY CURVED SPHERICAL SURFACES DEFINING OPPOSITE ENDS OF SAID BODY, SAID CONVEXLY CURVED END SURFACES BEING ARRANGED IN FACING RELATION ON EACH OTHER AND IN PREDETERMINED SPACED RELATION ALONG THE AXIS OF SAID BODY, THE CENTER OF CURVATURE OF EACH CONVEXLY CURVED END SURFACE BEING LOCATED AT THE INTERSECTION OF SAID AXIS WITH THE OTHER OF SAID CONVEXLY CURVED END SURFACES, ONE OF SAID CONVEXLY CURVED END SURFACES BEING OF RELATIVELY HIGH REFLECTIVITY OVER ALL PARTS THEREOF AND THE OTHER END SURFACE BEING OF RELATIVELY LOW REFLECTIVITY OVER ALL PARTS THEREOF EXCEPT FOR A RELATIVELY SMALL AREA IMMEDIATELY SURROUNDING AND DISPOSED IN CONCENTRIC RELATION WITH SAID AXIS, AND SAID RELATIVELY SMALL SURFACE AREA HAVING A RELATIVELY HIGH REFLECTIVITY, AT LEAST ONE OF SAID END SURFACE AREAS OF HIGH REFLECTIVITY BEING SLIGHTLY TRANSMISSIVE TO OPTICAL ENERGY AT THE EMISSION WAVELENGTH OF SAID LASER MATERIAL, WHEREBY AN OPTICAL RESONANT CAVITY FOR LOWER ORDER MODE PROPAGATION ONLY AND AT INCREASED EFFICIENCY WILL BE FORMED BETWEEN SAID AREAS OF RELATIVELY HIGH REFLECTIVITY.
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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |