Patent USB424415I5 successfully refreshed from Google Patents.
Patent US6139150A successfully refreshed from Google Patents.
US6139150A
Expired / Lapsed
US
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Compact visual field tester
Assignee: Carl Zeiss Inc
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Filing: 1999-01-22
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Granted: 2000-10-31
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Expires: 2019-01-22
Abstract
Abstract A visual field tester which measures the visual field of a patient's eye, which visual field tester includes: (a) an optical radiation source having an entrance pupil plane, which optical radiation source outputs one or more spots of optical radiation; and (b) an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane to the patient's eye with a one-to-one magnification, wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector array.
Inventors
- 👤 Jay Wei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:33
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/02; A61B3/024
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
112 words
A compact visual field tester for a patient's eye comprises: a radiation source having an entrance pupil plane, which radiation source includes an array of radiation sources, and which radiation source outputs one or more spots of optical radiation; an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; an indication apparatus; and a controller adapted to control radiation sources of the array and to receive signals transmitted thereto from the indication apparatus in response to input from the patient; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 2
Dependent Claim
112 words
A compact visual field tester for a patient's eye comprises: a radiation source having an entrance pupil plane, which radiation source includes an array of radiation sources, and which radiation source outputs one or more spots of optical radiation; an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; an indication apparatus; and a controller adapted to control radiation sources of the array and to receive signals transmitted thereto from the indication apparatus in response to input from the patient; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 3
Dependent Claim
20 words
The compact visual field tester of claim 1 wherein the optical relay system has a magnification substantially equal to one-to-one.
Claim 4
Dependent Claim
27 words
The compact visual field tester of claim 2 wherein the optical relay system relays the point to a position substantially at which the patient's eye is located.
Claim 5
Dependent Claim
15 words
The compact visual field tester of claim 2 wherein the retroreflector is a retroreflector array.
Claim 6
Dependent Claim
18 words
The compact visual field tester of claim 4 wherein the array comprises an array of light emitting diodes.
Claim 7
Dependent Claim
21 words
The compact visual field tester of claim 4 wherein the array is disposed in the focal plane of a lens system.
Claim 8
Dependent Claim
152 words
A compact visual field tester for a patient's eye comprises: a source of a spot of radiation, a lens system, and one or more scanners, wherein the spot of radiation is disposed in a focal plane of the lens system and the one or more scanners are disposed to rotate substantially about a point in an entrance pupil plane of the lens system or a point conjugate to the point in the entrance pupil plane of the lens system; an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; an indication apparatus; and a controller adapted to control radiation sources of the array and to receive signals transmitted thereto from the indication apparatus in response to input from the patient; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 9
Dependent Claim
152 words
A compact visual field tester for a patient's eye comprises: a source of a spot of radiation, a lens system, and one or more scanners, wherein the spot of radiation is disposed in a focal plane of the lens system and the one or more scanners are disposed to rotate substantially about a point in an entrance pupil plane of the lens system or a point conjugate to the point in the entrance pupil plane of the lens system; an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; an indication apparatus; and a controller adapted to control radiation sources of the array and to receive signals transmitted thereto from the indication apparatus in response to input from the patient; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 10
Dependent Claim
24 words
The apparatus of claim 7 wherein the optical relay system has a magnification substantially equal to one-to-one and the retroreflector is a retroreflector array.
Claim 11
Dependent Claim
207 words
A compact visual field tester for a patient's eye comprises: a source of a spot of radiation, a first lens system, a first scanner, a relay system, and a second scanner, wherein: (a) the spot of radiation is disposed in a focal plane of the first lens system; (b) the first scanner is disposed to rotate substantially about a point in the entrance pupil plane of the first lens system or a first point conjugate to the point in the entrance pupil plane of the first lens system; (c) the relay system having a magnification of one-to-one disposed to relay the point in the entrance pupil plane of the first lens system or the first point to a point conjugate thereto; and (d) the second scanner disposed to rotate substantially about the conjugate point; an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; an indication apparatus; and a controller adapted to control radiation sources of the array and to receive signals transmitted thereto from the indication apparatus in response to input from the patient; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 12
Dependent Claim
207 words
A compact visual field tester for a patient's eye comprises: a source of a spot of radiation, a first lens system, a first scanner, a relay system, and a second scanner, wherein: (a) the spot of radiation is disposed in a focal plane of the first lens system; (b) the first scanner is disposed to rotate substantially about a point in the entrance pupil plane of the first lens system or a first point conjugate to the point in the entrance pupil plane of the first lens system; (c) the relay system having a magnification of one-to-one disposed to relay the point in the entrance pupil plane of the first lens system or the first point to a point conjugate thereto; and (d) the second scanner disposed to rotate substantially about the conjugate point; an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; an indication apparatus; and a controller adapted to control radiation sources of the array and to receive signals transmitted thereto from the indication apparatus in response to input from the patient; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 13
Dependent Claim
24 words
The apparatus of claim 9 wherein the optical relay system has a magnification substantially equal to one-to-one and the retroreflector is a retroreflector array.
Claim 14
Independent Claim
115 words
A method for testing a visual field of a patient's eye which comprises the steps of: generating a spot of optical radiation which passes through an optical system having an entrance pupil plane; scanning the spot of radiation using a scanner disposed to rotate substantially about a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; and relaying using an optical relay system that relays a point in the entrance pupil or a point conjugate to the point in the entrance pupil; wherein the step of relaying comprises using an optical relay system that comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 15
Independent Claim
115 words
A method for testing a visual field of a patient's eye which comprises the steps of: generating a spot of optical radiation which passes through an optical system having an entrance pupil plane; scanning the spot of radiation using a scanner disposed to rotate substantially about a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane; and relaying using an optical relay system that relays a point in the entrance pupil or a point conjugate to the point in the entrance pupil; wherein the step of relaying comprises using an optical relay system that comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 16
Dependent Claim
24 words
The method of claim 11 wherein the optical relay system has a magnification substantially equal to one-to-one and the retroreflector is a retroreflector array.
Claim 17
Independent Claim
153 words
A method for testing a visual field of a patient's eye which comprises the steps of: generating a spot of optical radiation which passes through an optical system having an entrance pupil plane; scanning the spot of radiation using a first scanner disposed to rotate substantially about a point in the entrance pupil plane or a first point conjugate to the point in the entrance pupil plane; relaying using a relay system having a magnification of one-to-one disposed to relay the point in the entrance pupil or the first point to a point conjugate thereto; scanning the spot using a second scanner disposed to rotate substantially about the conjugate point; and relaying using an optical relay system that relays a point in the entrance pupil or a point conjugate to the point in the entrance pupil; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 18
Independent Claim
153 words
A method for testing a visual field of a patient's eye which comprises the steps of: generating a spot of optical radiation which passes through an optical system having an entrance pupil plane; scanning the spot of radiation using a first scanner disposed to rotate substantially about a point in the entrance pupil plane or a first point conjugate to the point in the entrance pupil plane; relaying using a relay system having a magnification of one-to-one disposed to relay the point in the entrance pupil or the first point to a point conjugate thereto; scanning the spot using a second scanner disposed to rotate substantially about the conjugate point; and relaying using an optical relay system that relays a point in the entrance pupil or a point conjugate to the point in the entrance pupil; wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector.
Claim 19
Dependent Claim
24 words
The method of claim 13 wherein the optical relay system has a magnification substantially equal to one-to-one and the retroreflector is a retroreflector array.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-31 | 2004-05-01 | 2004-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-31 | 2008-05-01 | 2008-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-31 | 2012-05-01 | 2012-10-31 | $7700.00 | Window Closed / Lapsed |