US3241440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illumination system
Assignee: Bausch and Lomb Inc
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Filing: 1963-12-26
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Granted: 1966-03-22
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Kugler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:31
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
AN ILLUMINATION SYSTEM INCLUDING THE COMBINATION OF A CONCAVE SPHERICAL REFLECTOR DEFINING AN APERTURE AND A COAXIAL CONFRONTING CONCAVE ELLIPTICAL REFLECTOR, AND A HIGH INTENSITY LIGHT SOURCE DISPOSED AT ONE FOCUS OF SAID ELLIPTICAL REFLECTOR AND CONCENTRIC WITH THE SURFACE OF SAID SPHERICAL REFLECTOR, SAID APERTURE BEING SUBSTANTIALLY DISPOSED AT THE SECOND FOCUS OF SAID ELLIPTICAL REFLECTOR, A CONDENSER LENS WHICH PRODUCES COLLIMATED LIGHT AND A PEBBLE LENS DISPOSED IN OPTICAL SERIES ADJACENT THE APERTURE WITH THE CONDENSER LENS BETWEEN THE APERTURE AND SAID PEBBLE LENS, SAID ELLIPTICAL REFLECTOR DIRECTING FOCUSING LIGHT RAYS AT THE APERTURE AND THROUGH THE CONDENSER LENS AND PEBBLE LENS, A PROJECTION LENS AND A SECOND CONDENSER LENS DISPOSED BETWEEN SAID PROJECTION LENS AND SAID PEBBLE LENS ON THE OPTICAL AXIS OF THE SYSTEM TO THEREBY DIRECT THE LIGHT RAYS FROM THE LIGHT SOURCE SO AS TO FILL THE ENTRANCE PUPIL OF THE PROJECTION LENS WITH AN EXTREMELY EVEN ILLUMINATION.
Claim 2
Dependent Claim
154 words
AN ILLUMINATION SYSTEM INCLUDING THE COMBINATION OF A CONCAVE SPHERICAL REFLECTOR DEFINING AN APERTURE AND A COAXIAL CONFRONTING CONCAVE ELLIPTICAL REFLECTOR, AND A HIGH INTENSITY LIGHT SOURCE DISPOSED AT ONE FOCUS OF SAID ELLIPTICAL REFLECTOR AND CONCENTRIC WITH THE SURFACE OF SAID SPHERICAL REFLECTOR, SAID APERTURE BEING SUBSTANTIALLY DISPOSED AT THE SECOND FOCUS OF SAID ELLIPTICAL REFLECTOR, A CONDENSER LENS WHICH PRODUCES COLLIMATED LIGHT AND A PEBBLE LENS DISPOSED IN OPTICAL SERIES ADJACENT THE APERTURE WITH THE CONDENSER LENS BETWEEN THE APERTURE AND SAID PEBBLE LENS, SAID ELLIPTICAL REFLECTOR DIRECTING FOCUSING LIGHT RAYS AT THE APERTURE AND THROUGH THE CONDENSER LENS AND PEBBLE LENS, A PROJECTION LENS AND A SECOND CONDENSER LENS DISPOSED BETWEEN SAID PROJECTION LENS AND SAID PEBBLE LENS ON THE OPTICAL AXIS OF THE SYSTEM TO THEREBY DIRECT THE LIGHT RAYS FROM THE LIGHT SOURCE SO AS TO FILL THE ENTRANCE PUPIL OF THE PROJECTION LENS WITH AN EXTREMELY EVEN ILLUMINATION.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |