Patent US4895494A successfully refreshed from Google Patents.
Patent US2873206A successfully refreshed from Google Patents.
Patent US4354730A successfully refreshed from Google Patents.
US4354730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical relay used for transferring an image from one point to another along an optical axis
Assignee: METALLISATIONS ET TRAITEMENTS OPTIQUES MTO
•
Filing: 1980-06-24
•
Granted: 1982-10-19
•
Expires: 2000-06-24
Abstract
Abstract This optical relay is characterized in that it comprises at least one optical system formed from at least two thick optical elements, one of which is convergent and the other divergent, the index, the thickness and the radii of curvature of the optical elements being selected so that the end faces of the optical system formed thereby are conjugate.
Inventors
- 👤 Roger P. Bel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:54
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/24; G02B23/26; G02B7/00; G02B7/20; G02B7/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
An optical relay used for transferring an image from one point to another along an optical axis comprising two optical systems each formed from at least two thick optical elements, one of which is convergent and the other divergent, the index, thickness and the radii of curvature of the optical elements being selected so that the end faces of each of the optical systems formed thereby are conjugate, said systems being connected together by an image conduit of optical fibers which bear against one end face of each of the systems.
Claim 2
Dependent Claim
91 words
An optical relay used for transferring an image from one point to another along an optical axis comprising two optical systems each formed from at least two thick optical elements, one of which is convergent and the other divergent, the index, thickness and the radii of curvature of the optical elements being selected so that the end faces of each of the optical systems formed thereby are conjugate, said systems being connected together by an image conduit of optical fibers which bear against one end face of each of the systems.
Claim 3
Dependent Claim
29 words
The optical relay of claim 1, wherein the optical elements of at least one of the optical systems are bonded, their bonding surfaces have the same radius of curvature.
Claim 4
Dependent Claim
31 words
The optical relay of claim 1, wherein the optical elements of at least one of the optical systems are spaced apart, whereas their adjacent faces have closely related radii of curvature.
Claim 5
Dependent Claim
27 words
The optical relay of claim 1, wherein the indices of refraction of two successive optical elements of any one system have values differing by at least 0.01.
Claim 6
Dependent Claim
31 words
The optical relay of claim 1, wherein the constringencies of the converging optical elements have values greater than those of the diverging optical elements and differ therefrom by at least 1.1.
Claim 7
Dependent Claim
38 words
The optical relay of claim 1, wherein the image conduit is in the form of a thin plate in which the fibers are oriented perpendicularly to the end faces of the two optical systems against which they bear.
Claim 8
Dependent Claim
36 words
The optical relay of claim 1, wherein the image conduit is bent, the ends of the fibers which form it being orientated perpendicularly to the end faces of the two optical systems against which they bear.
Claim 9
Dependent Claim
25 words
The optical relay of claim 1, wherein the image conduit is formed by an optical fiber plate cut out in the shape of a prism.
Claim 10
Dependent Claim
14 words
A self-lighting endoscopic system comprising an endoscope having the optical relay of claim 1.
References Cited (Backward Citations)
US3060805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |