US4256384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eyeball examining device
Assignee: Konan Camera Research Institue Inc
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Filing: 1979-10-15
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Granted: 1981-03-17
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Expires: 1999-10-15
Abstract
Abstract An eye examining device having a television camera and monitor connected thereto, an optical system for magnifying the eye ground or retina and focussing the image on the camera, a cathode ray tube connected with the camera and scanned in synchronism therewith, a light pattern generator connected with the cathode ray tube and monitor for display thereof and an optical system for projecting the image on the cathode ray tube onto the eye ground.
Inventors
- 👤 Kazutaka Kani
- 👤 Kuniomi Abe
- 👤 Masahiko Konagaya
- 👤 Noboru Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:02
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/14; A61B3/145
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
An eyeball examining device, comprising a television pick-up camera, a main optical system for coupling an eye ground image to 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 a cathode ray tube scanned in synchronism with said television monitor, means for generating an image signal and coupling it to said television monitor and cathode ray tube, and an optical system for introducing the displayed image of said cathode ray tube into said main optical system to project it upon the eye ground.
Claim 2
Dependent Claim
111 words
An eyeball examining device, comprising a television pick-up camera, a main optical system for coupling an eye ground image to 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 a cathode ray tube scanned in synchronism with said television monitor, means for generating an image signal and coupling it to said television monitor and cathode ray tube, and an optical system for introducing the displayed image of said cathode ray tube into said main optical system to project it upon the eye ground.
Claim 3
Dependent Claim
18 words
An eyeball examining device according to claim 1 wherein said image signal generating means includes a pattern generator.
Claim 4
Dependent Claim
61 words
An eyeball examining device according to claim 1 wherein said image signal generating means includes a light sensitive pen, a frame memory having memory locations scanned in synchronism with said television monitor for storing the output of said light pen, and control means for coupling the signal read out of said frame memory to said television monitor and cathode ray tube.
References Cited (Backward Citations)
US4149787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |