Patent US3796905A successfully refreshed from Google Patents.
US3796905A
Expired / Lapsed
US
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Cathode-ray tube having prism-shaped fibre optics faceplate
Assignee: Panasonic Holdings Corp
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Filing: 1972-11-10
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Granted: 1974-03-12
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Expires: 1992-11-10
Abstract
Abstract A cathode-ray tube including a fibre optics faceplate having two slanted front end faces angled from a plane perpendicular to the axes of the optical fibres of the faceplate. The fibre optics faceplate is cut into two pieces along an intermediate plane substantially perpendicular to the axes of the optical fibres.
Inventors
- 👤 H Maeda
- 👤 K Tomii
- 👤 E Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:07
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
In a cathode-ray tube having a prism-shaped fiber-optics faceplate, the improvement wherein said fiber-optics faceplate comprises: a first fiber-optics member having two end faces substantially perPendicular to the axes of the fibers, one of said faces facing the electron gun of said cathode-ray tube and being coated with a phosphorous layer; a second fiber optics member having one end face substantially perpendicular to the axes of the fibers and having at the other end portion thereof two slanted end faces angled from a plane perpendicular to the axes of the fibers in such a manner as to meet edgewise each other; and means disposed between said first and second fiber optics members and holding said one end face of said second fiber optics member in contact with the other face of said first fiber-optics member and permitting sliding movement therebetween in a direction substantially perpendicular to the axis of the fibers in said members.
Claim 2
Dependent Claim
154 words
In a cathode-ray tube having a prism-shaped fiber-optics faceplate, the improvement wherein said fiber-optics faceplate comprises: a first fiber-optics member having two end faces substantially perPendicular to the axes of the fibers, one of said faces facing the electron gun of said cathode-ray tube and being coated with a phosphorous layer; a second fiber optics member having one end face substantially perpendicular to the axes of the fibers and having at the other end portion thereof two slanted end faces angled from a plane perpendicular to the axes of the fibers in such a manner as to meet edgewise each other; and means disposed between said first and second fiber optics members and holding said one end face of said second fiber optics member in contact with the other face of said first fiber-optics member and permitting sliding movement therebetween in a direction substantially perpendicular to the axis of the fibers in said members.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |