US3244073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centered optical mirror system having finite conjegates
Assignee: Optische Industrie de Oude Delft NV
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Filing: 1962-09-12
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Granted: 1966-04-05
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Expires: 1982-09-12
Abstract
No abstract record available.
Inventors
- 👤 Bouwers Albert
- 👤 Bulthuis Henricus Wilhelmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:49
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/008; G02B17/02; G02B17/06; G02B17/0605; G02B17/08; G02B17/0804; G02B17/0808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A CENTERED OPTICAL OBJECTIVE SYSTEM HAVING FINITE CONJUGATES AND A MAGNIFICATION BETWEEN .5 AND 2, WHICH SYSTEM COMPRISES TWO CONCAVE SPHERICAL MIRROS FACING EACH OTHER AND SO POSITIONED WITH ESPECT TO A PAIR OF CONJUGATE SURFACES THAT SUCH CONJUGATES SURFACES ARE ON OPPOSITE SIDES OF THE PLANE MIDWAY BETWEEN SAID CONCAVE MIRROS AND THE LIGHT RAYS DEPARTING FROM A FIRST ONE OF SAID CONJUGATE SURFACES FIRST IMPINGE ON THE CONCAVE MIRROR WHICH IS ON THE SIDE OF SAID PLANE OPPOSITE TO SAID FIRST ONE OF SAID CONJUGATE SURFACES, THEN IMPINGE ON THE OTHER CONCAVE MIRROR AND ARE FINALLY FOCUSED IN THE OTHER OF SAID CONJUGATE SURFACES, SAID SYSTEM FURTHER COMPRISING BAFFLE MEANS POSITIONED IN THE SPACE BETWEEN SAID CONCAVE MIRRORS TO PREVENT LIGHT RAYS WHICH HAVE NOT BEEN
Claim 2
Dependent Claim
128 words
A CENTERED OPTICAL OBJECTIVE SYSTEM HAVING FINITE CONJUGATES AND A MAGNIFICATION BETWEEN .5 AND 2, WHICH SYSTEM COMPRISES TWO CONCAVE SPHERICAL MIRROS FACING EACH OTHER AND SO POSITIONED WITH ESPECT TO A PAIR OF CONJUGATE SURFACES THAT SUCH CONJUGATES SURFACES ARE ON OPPOSITE SIDES OF THE PLANE MIDWAY BETWEEN SAID CONCAVE MIRROS AND THE LIGHT RAYS DEPARTING FROM A FIRST ONE OF SAID CONJUGATE SURFACES FIRST IMPINGE ON THE CONCAVE MIRROR WHICH IS ON THE SIDE OF SAID PLANE OPPOSITE TO SAID FIRST ONE OF SAID CONJUGATE SURFACES, THEN IMPINGE ON THE OTHER CONCAVE MIRROR AND ARE FINALLY FOCUSED IN THE OTHER OF SAID CONJUGATE SURFACES, SAID SYSTEM FURTHER COMPRISING BAFFLE MEANS POSITIONED IN THE SPACE BETWEEN SAID CONCAVE MIRRORS TO PREVENT LIGHT RAYS WHICH HAVE NOT BEEN
References Cited (Backward Citations)
FR410262A
Cited
US2031792A
Cited
GB471365A
Cited
US2212211A
Cited
DE747917C
Cited
GB609615A
Cited
GB656011A
Cited
US2682197A
Cited
US2628533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |