US3600568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting arrangement
Assignee: Carl Zeiss AG
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Filing: 1970-04-13
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Granted: 1971-08-17
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Expires: 1990-04-13
Abstract
Abstract An illuminating device for projecting light from a source into the object plane of an object to be illuminated, or into the plane of an incidence aperture of a measuring microscope or other observation instrument, includes: an optical fiber light conductor, a first lens arranged to project an image of the light source, a second lens to project the latter image onto the incidence surface of the conductor, and third lens means arranged for focusing light emerging from the light emergence surface of the conductor into an object plane, or into the plane of an incidence aperture of an observation instrument.
Inventors
- 👤 Adolf Weyrauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:05
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/06; G02B21/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
An illuminating device for projecting light into a plane, such as the object plane of an object to be illuminated and into the plane of an incidence aperture of an observation system, said device coMprising a light source, an optical fiber light conductor having an incidence surface at one end and a light emergence surface at the other end, first lens means for projecting an image of the light source, second lens means arranged to project an image of the first lens onto said incidence surface, and third lens means for focusing light from said light emergence surface into said plane, the focal planes of said third lens means being in the planes of said emergence surface and of said object plane.
Claim 2
Dependent Claim
122 words
An illuminating device for projecting light into a plane, such as the object plane of an object to be illuminated and into the plane of an incidence aperture of an observation system, said device coMprising a light source, an optical fiber light conductor having an incidence surface at one end and a light emergence surface at the other end, first lens means for projecting an image of the light source, second lens means arranged to project an image of the first lens onto said incidence surface, and third lens means for focusing light from said light emergence surface into said plane, the focal planes of said third lens means being in the planes of said emergence surface and of said object plane.
Claim 3
Dependent Claim
41 words
The device of claim 1 wherein said lens means is a lens positioned so that the image of the light source projected from the first lens means, which is a lens, is focused at the optical center of the second lens.
Claim 4
Dependent Claim
31 words
The device of claim 2 which includes a fourth lens positioned adjacent said incidence surface of the light conductor with its focal point at the optical center of the second lens.
Claim 5
Dependent Claim
33 words
The device of claim 2 in which said incidence surface of the light conductor is convex with the focal point defined by its convexity being at the optical center of the second lens.
Claim 6
Dependent Claim
49 words
The device of claim 1 wherein said first lens means is positioned with its focal point between the first and second lens means and the second is positioned with its focal point coinciding with the plane of the image of the light source projected by the first lens means.
References Cited (Backward Citations)
US1351562A
Cited
US2186619A
Cited
US2827825A
Cited
US3318184A
Cited
US3347133A
Cited
US3497701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |