US4452514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical device for imaging an interior of an eye
Assignee: Optische Werke G Rodenstock
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Filing: 1982-04-02
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Granted: 1984-06-05
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Expires: 2002-04-02
Abstract
Abstract An optical device for imaging an interior of an eye, especially a retina of the human eye, with the optical device including a front element which acts as an objective and which is adapted to be brought in proximity to the eye, and a single- or multi-element field lens disposed in a common mount. The mount and field lens each include a flattened surface portion extending substantially parallel to a common optical axis of the front element and field lens. The flattened surface portions are disposed so as to permit an introduction of a surgical instrument into the eye during eye surgery such as, for example, vitrectomy.
Inventors
- 👤 Manfred Spitznas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:21
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/0008; A61B3/10; A61B3/12; A61B3/125
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
103 words
An optical device for imaging an interior of an eye, the device including a front element which acts as an objective and which is adapted to be brought in proximity to the eye, a field lens, and a common mounting means for mounting the front element and field lens, characterized in that the mounting means and the field lens each include a flattened surface portion extending substantially parallel to a common optical axis of the front element and the field lens, the flattened surface portions are disposed so as to permit an introduction of a surgical instrument into the eye during eye surgery.
Claim 2
Dependent Claim
103 words
An optical device for imaging an interior of an eye, the device including a front element which acts as an objective and which is adapted to be brought in proximity to the eye, a field lens, and a common mounting means for mounting the front element and field lens, characterized in that the mounting means and the field lens each include a flattened surface portion extending substantially parallel to a common optical axis of the front element and the field lens, the flattened surface portions are disposed so as to permit an introduction of a surgical instrument into the eye during eye surgery.
Claim 3
Dependent Claim
31 words
An optical device according to claim 1, characterized in that the device is adapted to image a retina of the human eye, and in that the eye surgery is a vitrectomy.
Claim 4
Dependent Claim
25 words
An optical device according to one of claims 1 or 2, characterized in that each of the flattened surface portions is a planar surface portion.
Claim 5
Dependent Claim
22 words
An optical device according to claim 3, characterized in that the flattened surface portion includes a boundary area of the front element.
Claim 6
Dependent Claim
54 words
An optical device according to claim 4, characterized in that an adjustable stand means is provided for holding the optical device, means are provided on the stand means for accommodating the mounting means so as to enable the optical device to be rotated about the optical axes of the field lens and front element.
Claim 7
Dependent Claim
38 words
An optical device according to claim 5, characterized in that the mounting means includes a cylindrical portion, the means for accommodating the mounting means includes an internal cylindrical receptacle for receiving the cylindrical portion of the mounting means.
Claim 8
Dependent Claim
23 words
An optical device according to claim 6, characterized in that means are provided for holding the mounting means in the internal cylindrical receptacle.
Claim 9
Dependent Claim
25 words
An optical device according to claim 7, characterized in that the means for holding includes at least one spring-loaded pin engageable with the mounting means.
Claim 10
Dependent Claim
23 words
An optical device according to claim 6, characterized in that means are provided for locking the mounting means in the internal cylindrical receptacle.
Claim 11
Dependent Claim
54 words
An optical device according to claim 1, characterized in that an adjustable stand means is provided for holding the optical device, means are provided on the stand means for accommodating the mounting means so as to enable the optical device to be rotated about the optical axes of the field lens and front element.
Claim 12
Dependent Claim
42 words
An optical device according to one of claims 1 or 10, characterized in that the mounting means includes a cylindrical portion, the means for accommodating the mounting means includes an internal cylindrical receptacle for receiving the cylindrical portion of the mounting means.
Claim 13
Dependent Claim
23 words
An optical device according to claim 11, characterized in that means are provided for holding the mounting means in the internal cylindrical receptacle.
Claim 14
Dependent Claim
30 words
An optical device according to one of claims 1 or 10, characterized in that means are provided for locking the mounting means in the means for accommodating the mounting means.
Claim 15
Dependent Claim
102 words
An optical device according to claim 1, characterized in that the mounting means includes a cylindrical extension portion, a mounting ring surrounding the cylindrical extension portion and an annular groove provided in the mounting ring, an adjustable stand means is provided for holding the optical device, a cylindrical receptacle is mounted on the stand means for accommodating the cylindrical extension portion, and in that means cooperable with the annular groove are provided for holding the optical device on the stand means so as to enable the optical device to be rotated about the optical axis of the front element and field lens.
Claim 16
Dependent Claim
39 words
An optical device according to claim 14, characterized in that the flattened surface portion of the mounting means is formed by an outer surface portion of the cylindrical extension portion and a flat surface provided on the mounting ring.
Claim 17
Dependent Claim
17 words
An optical device according to claim 2, in which the field lens is a single-element field lens.
Claim 18
Dependent Claim
17 words
An optical device according to claim 2, in which the field lens is a multiple-element field lens.
References Cited (Backward Citations)
US4134647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |