Patent US4281366A successfully refreshed from Google Patents.
US4281366A
Expired / Lapsed
US
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Lighting systems for surgical operations
Assignee: Richard Wolf GmbH
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Filing: 1980-02-25
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Granted: 1981-07-28
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Expires: 2000-02-25
Abstract
Abstract This invention relates to lighting systems for use during surgical operations or examinations. The device comprises a bundle of optical fibres having an intake area into which the light from an ellipsoidal mirror having a lamp therein can be beamed. A concave lens area located in an area facing away from the optical fibre bundle is co-axially situated forwardly adjacent the light intake area of the fibre bundle. The concave area may be formed by grinding out portion of a transparent plate and the light from the mirror may be concentrated by an aspheric lens between the mirror lamp and the lens area.
Inventors
- 👤 Helmut Wurster
- 👤 Ernst Blanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:16
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/06; A61B1/07; A61B1/0661; A61B1/0669; G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G02B6/0006; G02B6/24; G02B6/42; G02B6/4298; F; F21; F21W; F21W2131/00; F21W2131/20; F21W2131/205
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
A lighting system for surgical examinations and comprising an optical fibre bundle having an intake area into which the light of an ellipsoidal mirror lamp can be beamed, wherein a concave lens area located in the area facing away from said optical fibre bundle is co-axially situated forwardly adjacent said light intake area of said optical fibre bundle.
Claim 2
Dependent Claim
58 words
A lighting system for surgical examinations and comprising an optical fibre bundle having an intake area into which the light of an ellipsoidal mirror lamp can be beamed, wherein a concave lens area located in the area facing away from said optical fibre bundle is co-axially situated forwardly adjacent said light intake area of said optical fibre bundle.
Claim 3
Dependent Claim
18 words
A lighting system according to claim 1 wherein said concave lens area is part of a concave lens.
Claim 4
Dependent Claim
20 words
A lighting system according to claim 1 wherein said concave lens area is an area ground into a transparent plate.
Claim 5
Dependent Claim
21 words
A lighting system according to claim 3, wherein said concave lens area comprises several concentric concave ground sections of different radius.
Claim 6
Dependent Claim
34 words
A lighting system according to claim 4, wherein an aspheric lens acting as a condenser lens is interposed between said mirror lamp and said concave lens area, so as to increase the light density.
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) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |