Patent US4370033A successfully refreshed from Google Patents.
US4370033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eyeball examining device
Assignee: Konan Camera Research Institue Inc
•
Filing: 1979-10-15
•
Granted: 1983-01-25
•
Expires: 1999-10-15
Abstract
Abstract An eye examining device having a television pickup camera, an optical system for magnifying the eye ground or retina and focussing the image on said camera, a television monitor connected to the camera to display the image of the retina and an optical pattern movably disposed in the plane of the image and a light source illuminating said pattern.
Inventors
- 👤 Kazutaka Kani
- 👤 Kuniomi Abe
- 👤 Masahiko Konagaya
- 👤 Noboru Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:47
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/14; A61B3/145
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
An eyeball examining device, comprising a television pick-up camera, a main optical system including an image plane for focusing an eye ground image on said plane and on said television camera, an infrared ray source, means for directing infrared rays from said source to the eye ground and a television monitor for displaying the image picked up by said television camera, said device further comprising an optical infrared filter pattern located in the eye ground image plane of said main optical system, means for moving said pattern in said image plane and a light source for illuminating said optical pattern and imaging it on said eye ground for display on said television monitor.
Claim 2
Dependent Claim
113 words
An eyeball examining device, comprising a television pick-up camera, a main optical system including an image plane for focusing an eye ground image on said plane and on said television camera, an infrared ray source, means for directing infrared rays from said source to the eye ground and a television monitor for displaying the image picked up by said television camera, said device further comprising an optical infrared filter pattern located in the eye ground image plane of said main optical system, means for moving said pattern in said image plane and a light source for illuminating said optical pattern and imaging it on said eye ground for display on said television monitor.
Claim 3
Dependent Claim
22 words
A eyeball examining device according to claim 1 wherein said optical pattern includes an infrared ray filter having a pin-hole formed therein.
Claim 4
Dependent Claim
145 words
An eyeball examining device, comprising a television pick-up camera, a main optical system for focusing an eye ground image on said television camera, an infrared ray source, means for directing infrared rays from said source to the eye ground and a television monitor for displaying the image picked up by said television camera, said device further comprising an optical pattern located in the eye ground image plane of said main optical system, means for moving said pattern in said image plane and a light source for illuminating said optical pattern and imaging it on said eye ground for display on said television monitor, said moving means including means for cooperating with said television monitor and detecting the position thereof on the display screen of said monitor to produce a positional signal and driving means for positioning said optical pattern in accordance with said positional signal.
Claim 5
Dependent Claim
145 words
An eyeball examining device, comprising a television pick-up camera, a main optical system for focusing an eye ground image on said television camera, an infrared ray source, means for directing infrared rays from said source to the eye ground and a television monitor for displaying the image picked up by said television camera, said device further comprising an optical pattern located in the eye ground image plane of said main optical system, means for moving said pattern in said image plane and a light source for illuminating said optical pattern and imaging it on said eye ground for display on said television monitor, said moving means including means for cooperating with said television monitor and detecting the position thereof on the display screen of said monitor to produce a positional signal and driving means for positioning said optical pattern in accordance with said positional signal.
Claim 6
Dependent Claim
46 words
An eyeball examining device according to claim 3 wherein said positional signal producing means consists of a light sensing pen device for detecting its position on the television monitor and means responsive to said pen for positioning the optical pattern with reference to the eye ground.
Claim 7
Dependent Claim
22 words
An eyeball examining device according to claim 3 wherein said optical pattern includes an infrared ray filter having a pin-hole formed therein.
Claim 8
Dependent Claim
21 words
An eyeball examining device according to claim 5 wherein said positional signal producing means consists of a light sensing pen device.
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) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |